Month: April 2024

Reading Passage 1

For the century before Johnson’s Dictionary was published in 1775, there had been concern about the state of the English language. There was no standard way of speaking or writing and no agreement as to the best way of bringing some order to the chaos of English spelling. Dr Johnson provided the solution.

There had, of course, been dictionaries in the past, the first of these being a little book of some 120 pages, compiled by a certain Robert Cawdray, published in 1604 under the title A Table Alphabetical of hard usual English words. Like the various dictionaries that came after it during the seventeenth century, Cawdray’s tended to concentrate on ‘scholarly’ words; one function of the dictionary was to enable its student to convey an impression of fine learning.

Beyond the practical need to make order out of chaos, the rise of dictionaries is associated with the rise of the English middle class, who were anxious to define and circumscribe the various worlds to conquer -lexical as well as social and commercial. It is highly appropriate that Dr Samuel Johnson, the very model of an eighteenth-century literary man, as famous in his own time as in ours, should have published his Dictionary at the very beginning of the heyday of the middle class.

Johnson was a poet and critic who raised common sense to the heights of genius. His approach to the problems that had worried writers throughout the late seventeenth and early eighteenth centuries was intensely practical. Up until his time, the task of producing a dictionary on such a large scale had seemed impossible without the establishment of an academy to make decisions about right and wrong usage. Johnson decided he did not need an academy to settle arguments about language; he would write a dictionary himself; and he would do it single-handed. Johnson signed the contract for the Dictionary with the bookseller Robert Dosley at a breakfast held at the Golden Anchor Inn near Holborn Bar on 18 June 1764. He was to be paid £1,575 in instalments, and from this he took money to rent 17 Gough Square, in which he set up his ‘dictionary workshop’.

James Boswell, his biographer described the garret where Johnson worked as ‘fitted up like a counting house’ with a long desk running down the middle at which the copying clerks would work standing up. Johnson himself was stationed on a rickety chair at an ‘old crazy deal table’ surrounded by a chaos of borrowed books. He was also helped by six assistants, two of whom died whilst the Dictionary was still in preparation.

The work was immense; filing about eighty large notebooks (and without a library to hand), Johnson wrote the definitions of over 40,000 words, and illustrated their many meanings with some 114,000 quotations drawn from English writing on every subject, from the Elizabethans to his own time. He did not expel to achieve complete originality. Working to a deadline, he had to draw on the best of all previous dictionaries, and to make his work one of heroic synthesis. In fact, it was very much more. Unlike his predecessors, Johnson treated English very practically, as a living language, with many different shades of meaning. He adopted his definitions on the principle of English common law – according to precedent. After its publication, his Dictionary was not seriously rivalled for over a century.

After many vicissitudes the Dictionary was finally published on 15 April 1775. It was instantly recognised as a landmark throughout Europe. ‘This very noble work;’ wrote the leading Italian lexicographer, will be a perpetual monument of Fame to the Author, an Honour to his own Country in particular, and a general Benefit to the republic of Letters throughout Europe. The fact that Johnson had taken on the Academies of Europe and matched them (everyone knew that forty French academics had taken forty years to produce the first French national dictionary) was cause for much English celebration.

Johnson had worked for nine years, ‘with little assistance of the learned, and without any patronage of the great; not in the soft obscurities of retirement, or under the shelter of academic bowers, but amidst inconvenience and distraction, in sickness and in sorrow’. For all its faults and eccentricities his two-volume work is a masterpiece and a landmark, in his own words, ‘setting the orthography, displaying the analogy, regulating the structures, and ascertaining the significations of English words’. It is the cornerstone of Standard English, an achievement which, in James Boswell’s words, ‘conferred stability on the language of his country’.

The Dictionary, together with his other writing, made Johnson famous and so well esteemed that his friends were able to prevail upon King George III to offer him a pension. From then on, he was to become the Johnson of folklore.

Questions 1-3

Choose THREE letters A-H. Write your answers in boxes 1-3 on your answer sheet.
NB Your answers may be given in any order.

Which THREE of the following statements are true of Johnson’s Dictionary?
A It avoided all scholarly words.
B It was the only English dictionary in general use for 200 years.
C It was famous because of the large number of people involved.
D It focused mainly on language from contemporary texts.
E There was a time limit for its completion.
F It ignored work done by previous dictionary writers.
G It took into account subtleties of meaning.
H Its definitions were famous for their originality.

Questions 4-7

Complete the summary. Choose NO MORE THAN TWO WORDS from the passage for each answer.

In 1764 Dr Johnson accepted the contract to produce a dictionary. Having rented a garret, he took on a number of (4) ……………….. , who stood at a long central desk. Johnson did not have a (5) ……………….. available to him, but eventually produced definitions of in excess of 40,000 words written down in 80 large notebooks. On publication, the Dictionary was immediately hailed in many European countries as a landmark. According to his biographer, James Boswell, Johnson’s principal achievement was to bring (6) ……………….. to the English language. As a reward for his hard work, he was granted a (7) ……………….. by the king.

Questions 8-13

Do the following statements agree with the information given in Reading Passage 1? In boxes 8-13 on your answer sheet, write

TRUE                         if the statement is true according to the passage
FALSE                       if the statement is false according to the passage
NOT GIVEN           if the information is not given in the passage

8) The growing importance of the middle classes led to an increased demand for dictionaries.
9) Johnson has become more well known since his death.
10) Johnson had been planning to write a dictionary for several years.
11) Johnson set up an academy to help with the writing of his Dictionary.
12) Johnson only received payment for his Dictionary on its completion.
13) Not all of the assistants survived to see the publication of the Dictionary.

Nature or Nurture?

A A few years ago, in one of the most fascinating and disturbing experiments in behavioural psychology, Stanley Milgram of Yale University tested 40 subjects from all walks of life for their willingness to obey instructions given by a ‘leader’ in a situation in which the subjects might feel a personal distaste for the actions they were called upon to perform. Specifically, Milgram told each volunteer ‘teacher-subject’ that the experiment was in the noble cause of education, and was designed to test whether or not punishing pupils for their mistakes would have a positive effect on the pupils’ ability to learn.

B Milgram’s experimental set-up involved placing the teacher-subject before a panel of thirty switches with labels ranging from ’15 volts of electricity (slight shock)’ to ‘450 volts (danger – severe shock)’ in steps of 15 volts each. The teacher-subject was told that whenever the pupil gave the wrong answer to a question, a shock was to be administered, beginning at the lowest level and increasing in severity with each successive wrong answer. The supposed ‘pupil’ was in reality an actor hired by Milgram to simulate receiving the shocks by emitting a spectrum of groans, screams and writhings together with an assortment of statements and expletives denouncing both the experiment and the experimenter. Milgram told the teacher-subject to ignore the reactions of the pupil, and to administer whatever level of shock was called for, as per the rule governing the experimental situation of the moment.

C As the experiment unfolded, the pupil would deliberately give the wrong answers to questions posed by the teacher, thereby bringing on various electrical punishments, even up to the danger level of 300 volts and beyond. Many of the teacher-subjects balked at administering the higher levels of punishment, and turned to Milgram with questioning looks and/or complaints about continuing the experiment. In these situations, Milgram calmly explained that the teacher-subject was to ignore the pupil’s cries for mercy and carry on with the experiment. If the subject was still reluctant to proceed, Milgram said that it was important for the sake of the experiment that the procedure be followed through to the end. His final argument was, ‘You have no other choice. You must go on.’ What Milgram was trying to discover was the number of teacher-subjects who would be willing to administer the highest levels of shock, even in the face of strong personal and moral revulsion against the rules and conditions of the experiment.

D Prior to carrying out the experiment, Milgram explained his idea to a group of 39 psychiatrists and asked them to predict the average percentage of people in an ordinary population who would be willing to administer the highest shock level of 450 volts. The overwhelming consensus was that virtually all the out teacher-subjects would refuse to obey the experimenter. The psychiatrists felt that ‘most subjects would not go beyond 150 volts’ and they further anticipated that only four per cent would go up to 300 volts. Furthermore, they thought that only a lunatic fringe of about one in 1,000 would give the highest shock of 450 volts. Furthermore, they thought that only a lunatic cringe of about one in 1,000 would give the highest shock of 450 volts.

E What were the actual results? Well, over 60 per cent of the teacher-subjects continued to obey Milgram up to the 450-volt limit! In repetitions of the experiment in other countries, the percentage of obedient teacher-subjects was even higher, reaching 85 per cent in one country. How can we possibly account for this vast discrepancy between what calm, rational, knowledgeable people predict in the comfort of their study and what pressured, flustered, but cooperative teachers’ actually do in the laboratory of real life?

F One’s first inclination might be to argue that there must be some sort of built-in animal aggression instinct that was activated by the experiment, and that Milgram’s teacher-subjects were just following a genetic need to discharge this pent-up primal urge onto the pupil by administering the electrical shock. A modern hard-core sociobiologist might even go so far as to claim that this aggressive instinct evolved as an advantageous trait, having been of survival value to our ancestors in their struggle against the hardships of life on the plains and in the caves, ultimately finding its way into our genetic make-up as a remnant of our ancient animal ways.

G An alternative to this notion of genetic programming is to see the teacher-subjects’ actions as a result of the social environment under which the experiment was carried out. As Milgram himself pointed out, ‘Most subjects in the experiment see their behaviour in a larger context that is benevolent and useful to society – the pursuit of scientific truth. The psychological laboratory has a strong claim to legitimacy and evokes trust and confidence in those who perform there. An action such as shocking a victim, which in isolation appears evil, acquires a completely different meaning when placed in this setting.’

H Thus, in this explanation the subject merges his unique personality and personal and moral code with that of larger institutional structures, surrendering individual properties like loyalty, self-sacrifice and discipline to the service of malevolent systems of authority.

I Here we have two radically different explanations for why so many teacher-subjects were willing to forgo their sense of personal responsibility for the sake of an institutional authority figure. The problem for biologists, psychologists and anthropologists is to sort which of these two polar explanations is more plausible. This, in essence, is the problem of modern sociobiology – to discover the degree to which hard-wired genetic programming dictates, or at least strongly biases, the interaction of animals and humans with their environment, that is, their behaviour. Put another way, sociobiology is concerned with elucidating the biological basis of all behaviour.

Questions 14-19
Reading Passage 2 has nine paragraphs, A-I. Which paragraph contains the following information?

Write the correct letter A-I in boxes 14-19 on your answer sheet.

14 a biological explanation of the teacher-subjects’ behaviour
15 the explanation Milgram gave the teacher-subjects for the experiment
16 the identity of the pupils
17 the expected statistical outcome
18 the general aim of sociobiological study
19 the way Milgram persuaded the teacher-subjects to continue

Questions 20-22
Choose the correct letter. A, B. C or D. Write your answers in boxes 20-22 on your answer sheet.

20 The teacher-subjects were told that they were testing whether
A a 450-volt shock was dangerous
B punishment helps learning
C the pupils were honest
D they were suited to teaching

21 The teacher-subjects were instructed to
A stop when a pupil asked them to
B denounce pupils who made mistakes
C reduce the shock level after a correct answer
D give punishment according to a rule

22 Before the experiment took place the psychiatrists
A believed that a shock of 150 volts was too dangerous
B failed to agree on how the teacher-subjects would respond to instructions
C underestimated the teacher-subjects’ willingness to comply with experimental procedure
D thought that many of the teacher-subjects would administer a shock of 450 volts

Questions 23-26
Do the following statements agree with the information given in Reading Passage 2?
In boxes 23-26 on your answer sheet, write

TRUE                         if the statement agrees with the information
FALSE                       if the statement contradicts the information
NOT GIVEN            if there is no information on this

23 Several of the subjects were psychology students at Yale University.
24 Some people may believe that the teacher-subjects’ behaviour could be explained as a positive survival mechanism.
25 In a sociological explanation, personal values are more powerful than authority.
26 Milgram’s experiment solves an important question in sociobiology.

The Truth About the Environment

For many environmentalists, the world seems to be getting worse. They have developed a hit-list of our main fears: that natural resources are running out; that the population is ever growing, leaving less and less to eat; that species are becoming extinct in vast numbers, and that the planet’s air and water are becoming ever more polluted.

But a quick look at the facts shows a different picture. First, energy and other natural resources have become more abundant, not less so, since the book ‘The limits to Growth’ was published in 1972 by a group of scientists. Second, more food is now produced per head of the world’s population than at any time in history. Fewer people are starving. Third, although species are indeed becoming extinct, only about 0.7% of them are expelled to disappear in the next 50 years, not 25-50%, as has so often been predicted. And finally, most forms of environmental pollution either appear to have been exaggerated, or are transient – associated with the early phases of industrialisation and therefore best cured not by restricting economic growth, but by accelerating it. One form of pollution – the release of greenhouse gases that causes global warming – does appear to be a phenomenon that is going to extend well into our future, but its total impact is unlikely to pose a devastating problem. A bigger problem may well turn out to be an inappropriate response to it.

Yet opinion polls suggest that many people nurture the belief that environmental standards are declining and four factors seem to cause this disjunction between perception and reality.

One is the lopsidedness built into scientific research. Scientific funding goes mainly to areas with many problems. That may be wise policy but it will also create an impression that many more potential problems exist than is the case.

Secondly, environmental groups need to be noticed by the mass media. They also need to keep the money rolling in. Understandably, perhaps, they sometimes overstate their arguments. In 1997, for example, the World Wide Fund for Nature issued a press release entitled: ‘Two thirds of the world’s forests lost forever’. The truth turns out to be nearer 20%.

Though these groups are run overwhelmingly by selfless folk, they nevertheless share many of the characteristics of other lobby groups. That would matter less if people applied the same degree of scepticism to environmental lobbying as they do to lobby groups in other fields. A trade organisation arguing for, say, weaker pollution control is instantly seen as self-interested. Yet a green organisation opposing such a weakening is seen as altruistic, even if an impartial view of the controls in question might suggest they are doing more harm than good.

A third source of confusion is the attitude of the media. People are dearly more curious about bad news than good. Newspapers and broadcasters are there to provide what the public wants. That, however, can lead to significant distortions of perception. An example was America’s encounter with EI Nino in 1997 and 1998. This climatic phenomenon was accused of wrecking tourism, causing allergies, melting the ski-slopes, and causing 22 deaths. However, according to an article in the Bulletin of the American Meteorological Society, the damage it did was estimated at US$4 billion but the benefits amounted to some US$19 billion. These came from higher winter temperatures (which saved an estimated 850 lives, reduced heating costs and diminished spring floods caused by meltwaters).

The fourth factor is poor individual perception. People worry that the endless rise in the amount of stuff everyone throws away will cause the world to run out of places to dispose of waste. Yet, even if America’s trash output continues to rise as it has done in the past, and even if the American population doubles by 2100, all the rubbish America produces through the entire 21st century will still take up only one-12,000th of the area of the entire United States.

So what of global warming? As we know, carbon dioxide emissions are causing the planet to warm. The best estimates are that the temperatures will rise by 2-3°C in this century, causing considerable problems, at a total cost of US$5,000 billion.

Despite the intuition that something drastic needs to be done about such a costly problem, economic analyses dearly show it will be far more expensive to cut carbon dioxide emissions radically than to pay the costs of adaptation to the increased temperatures. A model by one of the main authors of the United Nations Climate Change Panel shows how an expected temperature increase of 2.1 degrees in 2100 would only be diminished to an increase of 1.9 degrees. Or to put it another way, the temperature increase that the planet would have experienced in 2094 would be postponed to 2100.

So this does not prevent global warming, but merely buys the world six years. Yet the cost of reducing carbon dioxide emissions, for the United States alone, will be higher than the cost of solving the world’s single, most pressing health problem: providing universal access to clean drinking water and sanitation. Such measures would avoid 2 million deaths every year, and prevent half a billion people from becoming seriously ill.

It is crucial that we look at the facts if we want to make the best possible decisions for the future. It may be costly to be overly optimistic – but more costly still to be too pessimistic.

Questions 27-32

Do the following statements agree with the information given in Reading Passage 3?
In boxes 27-32 on your answer sheet, write

YES                           if the statement agrees with the writer’s claims
NO                             if the statement contradicts the writer’s claims
NOT GIVEN          if there is impossible to say what the writer thinks about this

27 Environmentalists take a pessimistic view of the world for a number of reasons.
28 Data on the Earth’s natural resources has only been collected since 1972.
29 The number of starving people in the world has increased in recent years.
30 Extinct species are being replaced by new species.
31 Some pollution problems have been correctly linked to industrialisation.
32 It would be best to attempt to slow down economic growth.

Questions 33-37

Choose the correct letter, A, B, C or D. Write your answers in boxes 33-37 on your answer sheet.

33 What aspect of scientific research does the writer express concern about in paragraph 4?
A the need to produce results
B the lack of financial support
C the selection of areas to research
D the desire to solve every research problem

34 The writer quotes from the Worldwide Fund for Nature to illustrate how
A influential the mass media can be
B effective environmental groups can be
C the mass media can help groups raise funds
D environmental groups can exaggerate their claims

35 What is the writer’s main point about lobby groups in paragraph 6?
A Some are more active than others
B Some are better organised than others
C Some receive more criticism than others
D Some support more important issues than others

36 The writer suggests that newspapers print items that are intended to
A educate readers
B meet their readers’ expectations
C encourage feedback from readers
D mislead readers

37 What does the writer say about America’s waste problem?
A It will increase in line with population growth
B It is not as important as we have been led to believe
C It has been reduced through public awareness of the issues
D It is only significant in certain areas of the country

Questions 38-40

Complete the summary with the list of words A-I below. Write the correct letter A-I in boxes 38-40 on your answer sheet.

GLOBAL WARMING
The writer admits that global warming is a (38) ……………….. challenge, but says that it will not have a catastrophic impact on our future, if we deal with it in the (39) ……………….. way. If we try to reduce the levels of greenhouse gases, he believes that it would only have a minimal impact on rising temperatures. He feels it would be better to spend money on the more (40) ……………….. health problem of providing the world’s population with clean drinking water.

A unrealistic               B agreed              C expensive                D right               E long-term
F usual                       G surprising          H personal                 I urgent

How much higher? How much faster?

Since the early years of the twentieth century, when the International Athletic Federation began keeping records, there has been a steady improvement in how fast athletes run, how high they jump and how far they are able to hurl massive objects, themselves included, through space. For the so-called power events –that require a relatively brief, explosive release of energy, like the 100-metre sprint and the long jump-times and distances have improved ten to twenty percent. In the endurance events the results have been more dramatic. At the 1908 Olympics, John Hayes of the U.S. team ran to marathon in a time of 2:55:18. In 1999, Morocco’s Khalid Khannouchi set a new world record of 2:05:42, almost thirty percent faster.

No one theory can explain improvements in performance, but the most important factor has been genetics. ‘The athlete must choose his parents carefully,’ says Jesus Dapena, a sports scientist at Indiana University, invoking an oft-cited adage. Over the past century, the composition of the human gene pool has not changed appreciably, but with increasing global participation in athletics-and greater rewards to tempt athletes-it is more likely that individuals possessing the unique complement of genes for athletic performance can be identified early. ‘Was there someone like [sprinter] Michael Johnson in the 1920s?’ Dapena asks. ‘I’m sure there was, but his talent was probably never realized.’

Identifying genetically talented individuals is only the first step. Michael Yessis, an emeritus professor of Sports Science at California State University at Fullerton, maintains that ‘genetics only determines about one third of what an athlete can do. But with the right training we can go much further with that one third than we’ve been going.’ Yesis believes that U.S. runners, despite their impressive achievements, are ‘running on their genetics’. By applying more scientific methods, ‘they’re going to go much faster’. These methods include strength training that duplicates what they are doing in their running events as well as plyometrics, a technique pioneered in the former Soviet Union.

Whereas most exercises are designed to build up strength or endurance, plyometrics focuses on increasing power-the rate at which an athlete can expend energy. When a sprinter runs, Yesis explains, her foot stays in contact with the ground for just under a tenth of a second, half of which is devoted to landing and the other half to pushing off. Plyometric exercises help athletes make the best use of this brief interval.

Nutrition is another area that sports trainers have failed to address adequately. ‘Many athletes are not getting the best nutrition, even though supplements,’ Yessis insists. Each activity has its own nutritional needs. Few coaches, for instance, understand how deficiencies in trace minerals can lead to injuries.

Focused training will also play a role in enabling records to be broken. ‘If we applied the Russian training model to some of the outstanding runners we have in this country,’ Yessis asserts, ‘they would be breaking records left and right.’ He will not predict by how much, however: ‘Exactly what the limits are it’s hard to say, but there will be increases even if only by hundredths of a second, as long as our training continues to improve.’

One of the most important new methodologies is biomechanics, the study of the body in motion. A biomechanic films an athlete in action and then digitizes her performance, recording the motion of every joint and limb in three dimensions. By applying Newton’s law to these motions, ‘we can say that this athlete’s run is not fast enough; that this one is not using his arms strongly enough during take-off,’ says Dapena, who uses these methods to help high jumpers. To date, however, biomechanics has made only a small difference to athletic performance.

Revolutionary ideas still come from the athletes themselves. For example, during the 1968 Olympics in Mexico City, a relatively unknown high jumper named Dick Fosbury won the gold by going over the bar backwards, in complete contradiction of all the received high-jumping wisdom, a move instantly dubbed the Fosbury flop. Fosbury himself did not know what he was doing. That understanding took the later analysis of biomechanics specialists. Who put their minds to comprehending something that was too complex and unorthodox ever to have been invented through their own mathematical simulations. Fosbury also required another element that lies behind many improvements in athletic performance: an innovation in athletic equipment. In Fosbury’s case, it was the cushions that jumpers land on. Traditionally, high jumpers would land in pits filled with sawdust. But by Fosbury’s time, sawdust pits had been replaced by soft foam cushions, ideal for flopping.

In the end, most people who examine human performance are humbled by the resourcefulness of athletes and the powers of the human body. ‘Once you study athletics, you learn that it’s a vexingly complex issue,’ says John S.Raglin, a sports psychologist at Indiana University. ‘Core performance is not a simple or mundane thing of higher, faster, longer. So many variables enter into the equation, and our understanding in many cases is fundamental. We’re got a long way to go.’ For the foreseeable future, records will be made to be broken.

Questions 1-6
Do the following statements agree with the information given in Reading Passage 1? In boxes 1-6 on your answer sheet write

TRUE                          if the statement agrees with the information
FALSE                        if the statement contradicts the information
NOT GIVEN             if there is no information on this

1 Modern official athletic records date from about 1900.
2 There was little improvement in athletic performance before the twentieth century,
3 Performance has improved most greatly in events requiring an intensive burst of energy.
4 Improvements in athletic performance can be fully explained by genetics.
5 The parents of top athletes have often been successful athletes themselves.
6 The growing international importance of athletics means that gifted athletes can be recognised at a younger age.

Questions 7-10
Complete the sentences below with words taken from Reading Passage 1. Use ONE WORD for each answer.
Write your answers in boxes 7-10 on your answer sheet.

7 According to Professor Yessis, American runners are relying for their current success on………………..
8 Yessis describes a training approach from the former Soviet Union that aims to develop an athlete’s…………
9 Yessis links an inadequate diet to…………………
10 Yessis claims that the key to setting new records is better……………..

Questions 11-13
Choose the correct letter, A, B, C or D. Write your answers in boxes 11-13 on your answer sheet.

11 Biomechanics films are proving particularly useful because they enable trainers to
A highlight areas for improvement in athletes
B assess the fitness levels of athletes
C select top athletes
D predict the success of athletes

12 Biomechanics specialists used theoretical models to
A soften the Fosbury flop
B create the Fosbury flop
C correct the Fosbury flo
D explain the Fosbury flop.

13 John S. Raglin believes our current knowledge of athletics is
A mistaken
B basic
C diverse
D theoretical

The Nature and Aims of Archaeology

Archaeology is partly the discovery of treasures of the past, partly the work of the scientific analyst, partly the exercise of the creative imagination. It is toiling in the sun on an excavation in the Middle East, it is working with living Inuit in the snows of Alaska, and it is investigating the sewers of Roman Britain. But it is also the painstaking task of interpretation, so that we come to understand what these things mean for the human story. And it is the conservation of the world’s cultural heritage against looting and careless harm.

Archaeology, then, is both a physical activity out in the field, and an intellectual pursuit in the study or laboratory. That is part of its great attraction. The rich mixture of danger and detective work has also made it the perfect vehicle for fiction writers and film-makers, from Agatha Christie with Murder in Mesopotamia to Stephen Spielberg with Indiana Jones. However far from reality such portrayals are, they capture the essential truth that archaeology is an exciting quest – the quest for knowledge about ourselves and our past.

But how does archaeology relate to other disciplines such as anthropology and history that are also concerned with the human story? Is archaeology itself a science? And what are the responsibilities of the archaeologist in today’s world?

Anthropology, at its broadest, is the study of humanity- our physical characteristics as animals and our unique non-biological characteristics that we call culture. Culture in this sense includes what the anthropologist, Edward Tylor, summarised in 1871 as ‘knowledge, beliefs, art, morals, custom and any other capabilities and habits acquired by man as a member of society’. Anthropologists also use the term ‘culture’ in a more restricted sense when they refer to the ‘culture’ of a particular society, meaning the non-biological characteristics unique to that society, which distinguish it from other societies. Anthropology is thus a broad discipline – so broad that it is generally broken down into three smaller disciplines: physical anthropology, cultural anthropology and archaeology.

Physical anthropology, or biological anthropology as it is called, concerns the study of human biological or physical characteristics and how they evolved. Cultural anthropology – or social anthropology – analyses human culture and society. Two of its branches are ethnography (the study at first hand of individual living cultures) and ethnology (which sets out to compare cultures using ethnographic evidence to derive general principles about human society).

Archaeology is the ‘past tense of cultural anthropology’. Whereas cultural anthropologists will often base their conclusions on the experience of living within contemporary communities, archaeologists study past societies primarily through their material remains – the buildings, tools, and other artefacts that constitute what is known as the material culture left over from former societies.

Nevertheless, one of the most important tasks for the archaeologist today is to know how to interpret material culture in human terms. How were those pots used? Why are some dwellings round and others square. Here the methods of archaeology and ethnography overlap. Archaeologists in recent decades have developed ‘ethnoarchaeology’ where, like ethnographers, they live among contemporary communities, but with the specific purpose of learning how such societies use material culture – how they make their tools and weapons, why they build their settlements where they do, and so on. Moreover, archaeology has a role to play in the field of conservation. Heritage studies constitute a developing field, where it is realised that the world’s cultural heritage is a diminishing resource which holds different meanings for different people.

If, then, archaeology deals with the past, in what way does it differ from history? In the broadest sense, just as archaeology is an aspect of anthropology, so too is it a part of history – where we mean the whole history of humankind from its beginnings over three million years ago. Indeed, for more than ninety-nine percent of that huge span of time, archaeology – the study of past material culture – is the only significant source of information. Conventional historical sources begin only with the introduction of written records around 3,000 BC in western Asia, and much later in most other parts in the world.

A commonly drawn distinction is between pre-history, i.e. the period before written records – and history in the narrow sense, meaning the study of the past using written evidence. To archaeology, which studies all cultures and periods, whether with or without writing, the distinction between history and pre-history is a convenient dividing line that recognises the importance of the written word, but in no way lessens the importance of the useful information contained in oral histories.

Since the aim of archaeology is the understanding of humankind, it is a humanistic study, and since it deals with the human past, it is a historical discipline. But is differs from the study of written history in a fundamental way. The material the archaeologist finds does not tell us directly what to think. Historical records make statements, offer opinions and pass judgements. The objects the archaeologists discover, on the other hand, tell us nothing directly in themselves. In this respect, the practice of the archaeologist is rather like that of the scientist, who collects data, conducts experiments, formulates a hypothesis tests the hypothesis against more data, and then, in conclusion, devises a model that seems best to summarise the pattern observed in the data. The archaeologist has to develop a picture of the past, just as the scientist has to develop a coherent view of the natural world.

Questions 14-19
Do the following statements agree with the claims of the writer in Reading Passage 2? In boxes 14-19 on your answer sheet write:

YES                          if the statement agrees with the claims of the writer
NO                            if the statement contradicts the claims of the writer
NOT GIVEN         if it is impossible to say what the writer thinks about this

14 Archaeology involves creativity as well as investigative work.
15 Archaeologist must be able to translate texts from ancient languages.
16 Movies give a realistic picture of the work of archaeologists.
17 Anthropologist define culture in more than one way.
18 Archaeology is a more demanding field of study than anthropology.
19 The history of Europe has been documented since 3,000 BC.

Questions 20 and 21
Choose TWO letters A – E. Write your answer in boxes 20 and 21 on your answer sheet.

The list below gives some statements about anthropology.

Which TWO statements are mentioned by the writer of the text?

A It is important for government planners
B It is a continually growing field of study
C It often involves long periods of fieldwork
D It is subdivided for study purposes
E It studies human evolutionary patterns

Questions 22 and 23
Choose TWO letters A – E. Write your answer in boxes 22 and 23 on your answer sheet.

The list below gives some of the tasks of an archaeologist.

Which TWO of these tasks are mentioned by the writer of the text?

A examining ancient waste sites to investigate diet
B studying cave art to determine its significance
C deducing reasons for the shape of domestic buildings
D investigating the way different cultures make and use objects
E examining evidence for past climate changes

Questions 24-27
Complete the summary of the last two paragraphs of Reading Passage 2. Choose NO MORE THAN TWO WORDS from the passage for each answer.

Much of the work of archaeologists can be done using written records, but they find (24) ………………………… equally valuable. The writer describes archaeology as both a (25) …………………………. and a (26) …………………… However, as archaeologists do not try to influence human behaviour, the writer compares their style of working to that of a (27) ……………..

The Problem of Scarce Resources

Section A
The problem of how health-care resources should be allocated or apportioned, so that they are distributed in both the most just and most efficient way, is not a new one. Every health system in an economically developed society is faced with the need to decide (either formally or informally) what proportion of the community’s total resources should be spent on health-care; how resources are to be apportioned; what diseases and disabilities and which forms of treatment are to be given priority; which members of the community are to be given special consideration in respect of their health needs; and which forms of treatment are the most cost-effective.

Section B
What is new is that, from the 1950s onwards, there have been certain general changes in outlook about the finitude of resources as a whole and of health-care resources in particular, as well as more specific changes regarding the clientele of health-care resources and the cost to the community of those resources. Thus, in the 1950s and 1960s, there emerged an awareness in Western societies that resources for the provision of fossil fuel energy were finite and exhaustible and that the capacity of nature or the environment to sustain economic development and population was also finite. In other words, we became aware of the obvious fact that there were ‘limits to growth’. The new consciousness that there were also severe limits to health-care resources was part of this general revelation of the obvious. Looking back, it now seems quite incredible that in the national health systems that emerged in many countries in the years immediately after the 1939-45 World War, it was assumed without question that all the basic health needs of any community could be satisfied, at least in principle; the ‘in visible hand’ of economic progress would provide.

Section C
However, at exactly the same time as this new realization of the finite character of health-care resources was sinking in, an awareness of a contrary kind was developing in Western societies: that people have a basic right to health-care as a necessary condition of a proper human life. Like education, political and legal processes and institutions, public order, communication, transport and money supply, health-care came to be seen as one of the fundamental social facilities necessary for people to exercise their other rights as autonomous human beings. People are not in a position to exercise personal liberty and to be self-determining if they are poverty-stricken, or deprived of basic education, or do not live within a context of law and order. In the same way, basic health-care is a condition of the exercise of autonomy.

Section D
Although the language of ‘rights’ sometimes leads to confusion, by the late 1970s it was recognized in most societies that people have a right to health-care (though there has been considerable resistance in the United Sates to the idea that there is a formal right to health-care). It is also accepted that this right generates an obligation or duty for the state to ensure that adequate health-care resources are provided out of the public purse. The state has no obligation to provide a health-care system itself, but to ensure that such a system is provided. Put another way, basic health-care is now recognized as a ‘public good’, rather than a ‘private good’ that one is expected to buy for oneself. As the 1976 declaration of the World Health Organisation put it: ‘The enjoyment of the highest attainable standard of health is one of the fundamental rights of every human being without distinction of race, religion, political belief, economic or social condition’. As has just been remarked, in a liberal society basic health is seen as one of the indispensable conditions for the exercise of personal autonomy.

Section E
Just at the time when it became obvious that health-care resources could not possibly meet the demands being made upon them, people were demanding that their fundamental right to health-care be satisfied by the state. The second set of more specific changes that have led to the present concern about the distribution of health-care resources stems from the dramatic rise in health costs in most OECD countries, accompanied by large-scale demographic and social changes which have meant, to take one example, that elderly people are now major (and relatively very expensive) consumers of health-care resources. Thus in OECD countries as a whole, health costs increased from 3.8% of GDP in 1960 to 7% of GDP in 1980, and it has been predicted that the proportion of health costs to GDP will continue to increase. (In the US the current figure is about 12% of GDP, and in Australia about 7.8% of GDP.)

As a consequence, during the 1980s a kind of doomsday scenario (analogous to similar doomsday extrapolations about energy needs and fossil fuels or about population increases) was projected by health administrators, economists and politicians. In this scenario, ever-rising health costs were matched against static or declining resources.

Questions 28-31
Reading Passage 3 has five sections A-E. Choose the correct heading for section A and C-E from the list of headings below.

Write the correct number i-viii in boxes 28-31 on your answer sheet.

List of Headings

i The connection between health-care and other human rights
ii The development of market-based health systems.
iii The role of the state in health-care
iv A problem shared by every economically developed country
v The impact of recent change
vi The views of the medical establishment
vii The end of an illusion
viii Sustainable economic development

28 Section A
Example:  Section B           viii
29 Section C
30 Section D
31 Section E

Questions 32-35
Classify the following as first occurring

A between 1945 and 1950
B between 1950 and 1980
C after 1980

32 the realisation that the resources of the national health system were limited
33 a sharp rise in the cost of health-care.
34 a belief that all the health-care resources the community needed would be produced by economic growth
35 an acceptance of the role of the state in guaranteeing the provision of health-care.

Questions 36-40
Do the following statements agree with the view of the writer in Reading Passage 3? In boxes 136-40 on your answer sheet write:

YES                           if the statement agrees with the views of the writer
NO                            if the statement contradicts the views of the writer
NOT GIVEN          if it is impossible to say what the writer thinks about this

36 Personal liberty and independence have never been regarded as directly linked to health-care.
37 Health-care came to be seen as a right at about the same time that the limits of health-care resources became evident.
38 IN OECD countries population changes have had an impact on health-care costs in recent years.
39 OECD governments have consistently underestimated the level of health-care provision needed.
40 In most economically developed countries the elderly will to make special provision for their health-care in the future.

MICRO ENTERPRISE CREDIT FOR STREET YOUTH

‘I am from a large, poor family and for many years we have done without breakfast. Ever since I joined the Street Kids International Program I have been able to buy my family sugar and buns for breakfast. I have also bought myself decent second hand clothes and shoes.’ – Doreen Soko

‘We have had business experience. Now I am confident to expand what we have been doing. I have learnt cash management and the way of keeping money so we save for reinvestment. Now business is a part of our lives. As well, we did not know each other before – now we have made new friends.’ – Fan Kaoma

Participants in the Youth Skill Enterprise Initiative Program, Zambia

Introduction
Although small-scale business training and credit programs have become more common throughout the world, relatively little attention has been paid to the need to direct such opportunities to young people. Even less attention has been paid to children living on the street or in difficult circumstances.

Over the past nine years, Street Kids International (S.K.I.) has been working with partner organisations in Africa, Latin America and India to support the economic lives of street children. The purpose of this paper is to share some of the lessons S.K.I. and our partners have learned.

Background
Typically, children do not end up on the streets due to a single cause, but to a combination of factors: a dearth of adequately funded schools, the demand for income at home, family breakdown and violence. The street may be attractive to children as a place to find adventurous play and money. However, it is also a place where some children are exposed, with little or no protection, to exploitative employment, urban crime, and abuse.

Children who work on the streets are generally involved in unskilled, labour-intensive tasks which require long hours, such as shining shoes, carrying goods, guarding or washing cars, and informal tracing. Some may also earn income through begging, or through theft and illegal activities. At the same time, there are street children who take pride in supporting themselves and their families and who often enjoy their work. Many children may choose entrepreneurship because it allows them a degree of independence, is less exploitative than many forms of paid employment, and is flexible enough to allow them to participate in other activities such as education and domestic tasks.

Street Business Partnerships
S.K.I. has worked with partner organisations in Latin America, Africa and India to develop innovative opportunities for street children to earn income.
• The S.K.I. Bicycle Courier Service first started in the Sudan. Participants in this enterprise were supplied with bicycles, which they used to deliver parcels and messages, and which they were required to pay for gradually from their wages. A similar program was taken up in Bangalore, India.
• Another successful project, The Shoe Shine Collective, was a partnership program with the Y.W.C.A. in the Dominican Republic. In this project, participants were lent money to purchase shoe shine boxes. They were also given a sale place to store their equipment, and facilities for individual savings plans.
• The Youth Skills Enterprise initiative in Zambia is a joint program with the Red Cross Society and the Y.W.C.A. Street youths are supported to start their own small business through business training, life skills training and access to credit.

Lessons learned
The following lessons have emerged from the programs that S.K.I. and partner organisations have created.
• Being an entrepreneur is not for everyone, nor for every street child. Ideally, potential participants will have been involved in the organisation’s programs for at least six months, and trust and relationship building will have already been established.
• The involvement of the participants has been essential to the development of relevant programs. When children have had a major role in determining procedures, they are more likely to abide by and enforce them.
• It is critical for all loans to be linked to training programs that include the development of basic business and life skills.
• There are tremendous advantages to involving parents or guardians in the program, where such relationships exits. Home visits allow staff the opportunity to know where the participants live, and to understand more about each individual’s situation.
• Small loans are provided initially for purchasing fixed assets such as bicycles, shoe shine kits and basic building materials for a market stall. As the entrepreneurs gain experience, the enterprises can be gradually expanded and consideration can be given to increasing loan amounts. The loan amounts in S.K.I. programs have generally ranged from US$90-$100.
• All S.K.I. programs have charged interest on the loans, primarily to get the entrepreneurs used to the concept of paying interest on borrowed money. Generally the rates have been modest (lower than bank rates)

Conclusion
There is a need to recognise the importance of access to credit for impoverished young people seeking to fulfill economic needs. The provision of small loans to support the entrepreneurial dreams and ambitions of youth can be an effective means to help them change their lives. However, we believe that credit must be extended in association with other types of support that help participants develop critical kills as well as productive businesses.

Questions 1-4
Choose the correct letter, A, B, C or D. Write your answers in boxes 1-4 on your answer sheet.

1 The quotations in the box at the beginning of the article
A exemplify the effects of S.K.I.
B explain why S.K.I. was set up
C outline the problems of street children
D highlight the benefits to society of S.K.I.

2 The main purpose of S.K.I. is to
A draw the attention of governments to the problem of street children.
B provide schools and social support for street children.
C encourage the public to give money to street children.
D give business training and loans to street children.

3 Which of the following is mentioned by the writer as a reason why children end up living on the streets?
A unemployment
B war
C poverty
D crime

4 In order to become more independent, street children may
A reject paid employment
B leave their families
C set up their own business
D employ other children

Questions 5-8
Complete the table below. Choose NO MORE THAN THREE WORDS from Reading Passage 1 for each answer.

Country	Organisations involved	Type of project	Support provided
(5)……………… and ………….	– S.K.I.	courier service	– provision of (6)…………….
Dominican Republic	– S.K.I – Y.W.C.A.	(7)…………………	– loans – storage facilities – saving plans
Zambia	– S.K.I. – The Red Cross – Y.W.C.A.	setting up small business	– business training – (8)……………. training – access to credit

Questions 9-12
In boxes 9-12 on your answer sheet write:

YES                       if the statement agrees with the claims of the writer
NO                         if the statement contradicts the claims of the writer
NOT GIVEN      if it is impossible to say what the writer thinks about this

9. Any street child can set up their own small business if given enough support.
10. In some cases, the families of street children may need financial support from S.K.I.
11. Only one fixed loan should be given to each child.
12. The children have to pay back slightly more money than they borrowed.

Question 13
Choose the correct letter, A, B, C or D. Write your answer in box 13 on your answer sheet.

The writers conclude that money should only be lent to street children

A as part of a wider program of aid
B for programs that are not too ambitious
C when programs are supported by local businesses
D if the projects planned are realistic and useful

VOLCANOES – EARTH SHATTERING NEWS

A Volcanoes are the ultimate earth-moving machinery. A violent eruption can blow the top few kilometres off a mountain, scatter fine ash practically all over the globe and hurl rock fragments into the stratosphere to darken the skies a continent away.

But the classic eruption – cone-shaped mountain, big bang, mushroom cloud and surges of molten lava – is only a tiny part of a global story. Volcanism, the name given to volcanic processes, really has shaped the world. Eruptions have rifted continents, raised mountain chains, constructed islands and shaped the topography of the earth. The entire ocean floor has a basement of volcanic basalt.

Volcanoes have not only made the continents, they are also thought to have made the world’s first stable atmosphere and provided all the water for the oceans, rivers and ice-caps. There are now about 600 active volcanoes. Every year they add two or three cubic kilometres of rock to the continents. Imagine a similar number of volcanoes smoking away for the last 3,500 million years. That is enough rock to explain the continental crust.

What comes out of volcanic craters is mostly gas. More than 90% of this gas is water vapour from the deep earth: enough to explain, over 3,500 million years, the water in the oceans. The rest of the gas is nitrogen, carbon dioxide, sulphur dioxide, methane, ammonia and hydrogen. The quantity of these gases, again multiplied over 3,500 million years, is enough to explain the mass of the world’s atmosphere. We are alive because volcanoes provided the soil, air and water we need.

B Geologists consider the earth as having a molten core, surrounded by a semi-molten mantle and a brittle, outer skin. It helps to think of a soft-boiled egg with a runny yolk, a firm but squishy white and a hard shell. If the shell is even slightly cracked during boiling, the white material bubbles out and sets like a tiny mountain chain over the crack – like an archipelogo of volcanic islands such as the Hawaiian Islands. But the earth is so much bigger and the mantle below is so much hotter.

Even though the mantle rocks are kept solid by overlying pressure, they can still slowly ‘flow’ like thick treacle. The flow, thought to be in the form of convection currents, is powerful enough to fracture the ‘eggshell’ of the crust into plates, and keep them bumping and grinding against each other, or even overlapping, at the rate of a few centimetres a year. These fracture zones, where the collisions occur, are where earthquakes happen. And, very often, volcanoes.

C These zones are lines of weakness, or hot spots. Every eruption is different, but put at its simplest, where there are weaknesses, rocks deep in the mantle, heated to 1,350oC, will start to expand and rise. As they do so, the pressure drops, and they expand and become liquid and rise more swiftly.

Sometimes it is slow: vast bubbles of magma – molten rock from the mantle – inch towards the surface, cooling slowly, to show through as granite extrusions (as on Skye, or the Great Whin Sill, the lava dyke squeezed out like toothpaste that carries part of Hadrian’s Wall in northern England). Sometimes – as in Northern Ireland, Wales and the Karoo in South Africa – the magma rose faster, and then flowed out horizontally on to the surface in vast thick sheets. In the Deccan plateau in western India, there are more than two million cubic kilometres of lava, some of it 2,400 metres thick, formed over 500,000 years of slurping eruption.

Sometimes the magma moves very swiftly indeed. It does not have time to cool as it surges upwards. The gases trapped inside the boiling rock expand suddenly, the lava glows with heat, it begins to froth, and it explodes with tremendous force. Then the slightly cooler lava following it begins to flow over the lip of the crater. It happens on Mars, it happened on the moon, it even happens on some of the moons of Jupiter and Uranus. By studying the evidence, volcanologists can read the force of the great blasts of the past. Is the pumice light and full of holes? The explosion was tremendous. Are the rocks heavy, with huge crystalline basalt shapes, like the Giant’s Causeway in Northern Ireland? It was a slow, gentle eruption.

The biggest eruption are deep on the mid-ocean floor, where new lava is forcing the continents apart and widening the Atlantic by perhaps five centimetres a year. Look at maps of volcanoes, earthquakes and island chains like the Philippines and Japan, and you can see the rough outlines of what are called tectonic plates – the plates which make up the earth’s crust and mantle. The most dramatic of these is the Pacific ‘ring of fire’ where there have the most violent explosions – Mount Pinatubo near Manila, Mount St Helen’s in the Rockies and El Chichón in Mexico about a decade ago, not to mention world-shaking blasts like Krakatoa in the Sunda Straits in 1883.

D But volcanoes are not very predictable. That is because geological time is not like human time. During quiet periods, volcanoes cap themselves with their own lava by forming a powerful cone from the molten rocks slopping over the rim of the crater; later the lava cools slowly into a huge, hard, stable plug which blocks any further eruption until the pressure below becomes irresistible. In the case of Mount Pinatubo, this took 600 years.

Then, sometimes, with only a small warning, the mountain blows its top. It did this at Mont Pelée in Martinique at 7.49 a.m. on 8 May, 1902. Of a town of 28,000, only two people survived. In 1815, a sudden blast removed the top 1,280 metres of Mount Tambora in Indonesia. The eruption was so fierce that dust thrown into the stratosphere darkened the skies, canceling the following summer in Europe and North America. Thousands starved as the harvest failed, after snow in June and frosts in August. Volcanoes are potentially world news, especially the quiet ones.

Questions 14-17
Reading Passage 2 has four sections A-D. Choose the correct heading for the each section from the list of headings below. Write the correct number i-vi in boxes 14-17 on your answer sheet.

List of Headings

i Causes of volcanic eruption
ii Efforts to predict volcanic eruption
iii Volcanoes and the features of our planet
iv Different types of volcanic eruption
v International relief efforts
vi The unpredictability of volcanic eruption

14 Section A
15 Section B
16 Section C
17 Section D

Questions 18-21
Answer the questions below using NO MORE THAN THREE WORDS AND/ OR A NUMBER from the passage for each answer.
Write your answers in boxes 18-21 on your answer sheet.

18 What are the sections of the earth’s crust, often associated with volcanic activity, called?
19 What is the name given to molten rock from the mantle?
20 What is the earthquake zone on the Pacific Ocean called?
21 For how many years did Mount Pinatubo remain inactive?

Questions 22-26
Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer.

Write your answers in boxes 22-26 on your answer sheets.

Volcanic eruptions have shaped the earth’s land surface. They may also have produced the world’s atmosphere and (22) …………………. Eruptions occur when molten rocks from the earth’s mantle rise and expand. When they become liquid, they move more quickly through cracks in the surface. There are different types of eruption. Sometimes the (23) …………………… moves slowly and forms outcrops of granite on the earth’s surface. When it moves more quickly it may flow out in thick horizontal sheets. Examples of this type of eruption can be found in Northern Ireland, Wales, South Africa and (24) …………………… A third type of eruption occurs when the lava emerges very quickly and (25) ………………. violently. This happens because the magma moves so suddenly that (26) ……………….. are emitted.

OBTAINING LINGUISTIC DATA

A Many procedures are available for obtaining data about a language. They range from a carefully planned, intensive field investigation in a foreign country to a casual introspection about one’s mother tongue carried out in an armchair at home.

B In all cases, someone has to act as a source of language data — an informant. Informants are (ideally) native speakers of a language, who provide utterances for analysis and other kinds of information about the language (e.g. translations, comments about correctness, or judgments on usage). Often, when studying their mother tongue, linguists act as their own informants, judging the ambiguity, acceptability, or other properties of utterances against their own intuitions. The convenience of this approach makes it widely used, and it is considered the norm in the generative approach to linguistics. But a linguist’s personal judgments are often uncertain, or disagree with the judgments of other linguists, at which point recourse is needed to more objective methods of enquiry, using non-linguists as informants. The latter procedure is unavoidable when working on foreign languages, or child speech.

C Many factors must be considered when selecting informants – whether one is working with single speakers (a common situation when language has not been described before), two people interacting small groups or large-scale samples. Age, sex, social background and other aspects of identity are important, as these factors are known to influence the kind of language used. The topic of conversation and the characteristics of the social setting (e.g. the level of formality) are also highly relevant, as are the personal qualities of the informants (e.g. their fluency and consistency). For large studies, scrupulous attention has been paid to the sampling theory employed, and in all cases, decisions have to be made about the best investigative techniques to use.

D Today, researchers often tape-record informants. This enables the linguist’s claims about the language to be checked, and provides a way of making those claims more accurate (“difficult” pieces of speech can be listened to repeatedly). But obtaining naturalistic, good-quality data is never easy. People talk abnormally when they know they are being recorded, and sound quality can be poor. A variety of tape-recording procedures have thus been devised to minimize the “observer’s paradox” (how to observe the way people behave when they are not being observed). Some recordings are made without the speakers being aware of the fact- a procedure that obtains very natural data, though ethical objections must be anticipated. Alternatively, attempts can be made to make the speaker forget about the recording, such as keeping the tape recorder out of sight, or using radio microphones. A useful technique is to introduce a topic that quickly involves the speaker, and stimulates a natural language style (e.g. asking older informants about how times have changed in their locality).

E An audio tape recording does not solve all the linguist’s problems, however. Speech is often unclear and ambiguous. Where possible, therefore, the recording has to be supplemented by the observer’s written comments on the non-verbal behavior of the participants, and about the context in general. A facial expression, for example, can dramatically alter the meaning of what is said. Video recordings avoid these problems to a large extent, but even they have limitations (the camera cannot be everywhere), and transcriptions always benefit from any additional commentary provided by an observer.

F Linguists also make great use of structured sessions, in which they systematically ask their informants for utterances that describe certain actions, objects or behaviour. With a bilingual informant, or through use of an interpreter, it is possible to use translation techniques (‘How do you say table in your language?’). A large number of points can be covered in a short time, using interview worksheets and questionnaires. Often , the researcher wishes to obtain information about just s single variable, in which case a restricted set of questions may be used a particular feature of pronunciation, for example, can be elicited by asking the informant to say a restricted set of words. There are also several direct methods of elicitation, such as asking informants to fill in the blanks in a substitution frame (e.g. I___ see a car), or feeding them the wrong stimulus of correction (‘is it possible to say I no can see?’)

G A representative sample of language, compiled for the purpose of linguistic analysis, is known as a corpus. A corpus enables the linguist to make unbiased statements about frequency of usage, and it provides accessible data for the use of different researchers. Its range and size are variable. Some corpora attempt to cover the language as a whole, taking extracts from many kinds of text, others are extremely selective, providing a collection of material that deals only with a particular linguistic feature. The size of the corpus depends on practical factors, such as the time available to collect, process and store the data it can take up to several hours to provide an accurate transcription of a few minutes of speech. Sometimes a small sample of data will be enough to decide a linguistic hypothesis; by contrast, corpora in major research projects can total millions of words. An important principle is that all corpora, whatever their size, are inevitably limited in their coverage, and always need to be supplemented by data derived from the intuitions of native speakers of the language, through either introspection or experimentation.

Questions 27-31
Reading Passage 3 has seven paragraphs labeled A-G. Which paragraph contains the following information?
Write the correct letter A-G in boxes 27-31 on your answer sheet. NB You may use any letter more than once.

27 the effect of recording on the way people talk
28 the importance of taking notes on body language
29 the fact that language is influenced by social situation
30 how informants can be helped to be less self-conscious
31 various methods that can be used to generate specific data

Questions 32-36
Complete the table below. Choose NO MORE THAT THREE WORDS from the passage for each answer.
Write your answers in boxes 32-36 on your answer sheet.

Methods of obtaining linguistic data	Advantages	Disadvantages
(32)………………as informant	convenient	method of enquiry not objective enough
Non-linguistic as informant	necessary with (33)…………….. and child speech	the number of factors to be considered
Recording as informant	allows linguistics’ claims to be checked	(34)…………………. of sound
Videoing as informant	allows speakers’ (35)………………to be observed	(36)………………might miss certain things

Questions 37-40
Complete the summary of paragraph G below. Choose NO MORE THAN THREE WORDS from the passage for each answer.

A linguist can use a corpus to comment objectively on (37)…………….. Some corpora include a wide range of language while others are used to focus on a (38)……..…….…. The length of time the process takes will affect the (39)……….…..… of the corpus. No corpus can ever cover the whole language and so linguists often find themselves relying on the additional information that can be gained from the (40)…….…….…of those who speak the language concerned.

Lost for Words

In the Native American Navajo nation, which sprawls across four states in the American south-west, the native language is dying. Most of its speakers are middle-aged or elderly. Although many students take classes in Navajo, the schools are run in English. Street signs’, supermarket goods and even their own newspaper are all in English, Not surprisingly, linguists doubt that any native speakers of Navajo will remain in a hundred years’ time.

Navajo is far from alone. Half the world’s 6,800 languages are likely to vanish within two generations – that’s one language lost every ten days. Never before has the planet’s linguistic diversity shrunk at such a pace. ‘At the moment, we are heading for about three or four languages dominating the world,’ says Mark Pagel, an evolutionary biologist at the University of Reading. ‘It’s a mass extinction, and whether we will ever rebound from the loss is difficult to know.’

Isolation breeds linguistic diversity: as a result, the world is peppered with languages spoken by only a few people. Only 250 languages have more than a million speakers, and at least 3,000 have fewer than 2,500. It is not necessarily these small languages that are about to disappear. Navajo is considered endangered despite having 150,000 speakers. What makes a language endangered is not just the number of speakers, but how old they are. If it is spoken by children it is relatively safe. The critically endangered languages are those that are only spoken by the elderly, according to Michael Krauss, director of the Alassk Native Language Center, in Fairbanks.

Why do people reject the language of their parents? It begins with a crisis of confidence, when a small community finds itself alongside a larger, wealthier society, says Nicholas Ostler, of Britain’s Foundation for Endangered Languages, in Bath. ‘People lose faith in their culture,’ he says. ‘When the next generation reaches their teens, they might not want to be induced into the old traditions.’

The change is not always voluntary quite often, governments try to kill off a minority language by banning its use in public or discouraging its use in schools, all to promote national unity. The former US policy of running Indian reservation schools in English, for example, effectively put languages such as Navajo on the danger list. But Salikoko Mufwene, who chairs the Linguistics department at the University of Chicago, argues that the deadliest weapon is not government policy but economic globalisation. ‘Native Americans have not lost pride in their language, but they have had to adapt to socio-economic pressures,’ he says. ‘They cannot refuse to speak English if most commercial activity is in English.’ But are languages worth saving? At the very least, there is a loss of data for the study of languages and their evolution, which relies on comparisons between languages, both living and dead. When an unwritten and unrecorded language disappears, it is lost to science.

Language is also intimately bound up with culture, so it may be difficult to preserve one without the other. ‘If a person shifts from Navajo to English, they lose something,’ Mufwene says. ‘Moreover, the loss of diversity may also deprive us of different ways of looking at the world,’ says Pagel. There is mounting evidence that learning a language produces physiological changes in the brain. ‘Your brain and mine are different from the brain of someone who speaks French, for instance,’ Pagel says, and this could affect our thoughts and perceptions. ‘The patterns and connections we make among various concepts may be structured by the linguistic habits of our community.’

So despite linguists’ best efforts, many languages will disappear over the next century. But a growing interest in cultural identity may prevent the direst predictions from coming true. ‘The key to fostering diversity is for people to learn their ancestral tongue, as well as the dominant language,’ says Doug Whalen, founder and president of the Endangered Language Fund in New Haven, Connecticut. ‘Most of these languages will not survive without a large degree of bilingualism,’ he says. In New Zealand, classes for children have slowed the erosion of Maori and rekindled interest in the language. A similar approach in Hawaii has produced about 8,000 new speakers of Polynesian languages in the past few years. In California, ‘apprentice’ programmes have provided life support to several indigenous languages. Volunteer ‘apprentices’ pair up with one of the last living speakers of a Native American tongue to learn a traditional skill such as basket weaving, with instruction exclusively in the endangered language. After about 300 hours of training they are generally sufficiently fluent to transmit the language to the next generation. But Mufwene says that preventing a language dying out is not the same as giving it new life by using it every day. ‘Preserving a language is more like preserving fruits in a jar’ he says.

However, preservation can bring a language back from the dead. There are examples of languages that have survived in written form and then been revived by later generations. But a written form is essential for this, so the mere possibility of revival has led many speakers of endangered languages to develop systems of writing where none existed before.

Questions 1-4
Choose NO MORE THAN TWO WORDS from the passage for each answer. Write your answers in boxes 1-4 on your answer sheet.

There are currently approximately 6,800 languages in the world. This great variety of languages came about largely as a result of geographical (1)……………………..But in today’s world, factors such as government initiatives and (2)…………………..are contributing to a huge decrease in the number of languages. One factor which may help to ensure that some endangered languages do not die out completely is people’s increasing appreciation of their (3)…………………….This has been encouraged through programmes of language classes for children and through ‘apprentice’ schemes, in which the endangered language is used as the medium of instruction to teach people a (4)…………………….Some speakers of endangered languages have even produced writing systems in order to help secure the survival of their mother tongue.

Questions 5-9
Look at the following statements (Questions 5-9) and the list of people in the box below. Match each statement with the correct person A—E. Write the appropriate letter A-E in boxes 5-9 on your answer sheet.
NB You may use any letter more than once.

5 Endangered languages cannot be saved unless people learn to speak more than one language.
6 Saving languages from extinction is not in itself a satisfactory goal.
7 The way we think may be determined by our language.
8 Young people often reject the established way of life in their community.
9 A change of language may mean a loss of traditional culture

A Michael Krauss                 B Salikoko Mufwene                      C Nicholas Ostler

D Mark Pagel                       E Doug Whalen

Questions 10-13

Do the following statements agree with the views of the writer in the passage? In boxes 10-13 on your answer sheet write

YES                 if the statement agrees with the view of the writer
NO                 if the statement contradicts the view of the writer
NOT GIVEN    if it is impossible to say what the writer thinks about this

10. The Navajo language will die out because it currently has too few speakers.
11. A large number of native speakers fails to guarantee the survival of a language.
12. National governments could do more to protect endangered languages.
13. The loss of linguistic diversity is inevitable.

Alternative Medicine in Australia

The first students to study alternative medicine at university level in Australia began their four-year, full-time course at the University of Technology, Sydney, in early 1994. Their course covered, among other therapies, acupuncture. The theory they learnt is based on the traditional Chinese explanation of this ancient healing art: that it can regulate the flow of ‘Qi’ or energy through pathways in the body. This course reflects how far some alternative therapies have come in their struggle for acceptance by the medical establishment.

Australia has been unusual in the Western world in having a very conservative attitude to natural or alternative therapies, according to Dr Paul Laver, a lecturer in Public Health at the University of Sydney. ‘We’ve had a tradition of doctors being fairly powerful and I guess they are pretty loath to allow any pretenders to their position to come into it.’ In many other industrialized countries, orthodox and alternative medicines have worked ‘hand in glove’ for years. In Europe, only orthodox doctors can prescribe herbal medicine. In Germany, plant remedies account for 10% of the national turnover of pharmaceutical. Americans made more visits to alternative therapist than to orthodox doctors in 1990, and each year they spend about $US 12 billion on the therapies that have not been scientifically tested.

Disenchantment with orthodox medicine has seen the popularity of alternative therapies in Australia climb steadily during the past 20 years. In a 1983 national health survey, 1.9% of people said they had contacted a chiropractor, naturopath, osteopath, acupuncturist or herbalist in the two weeks prior to the survey. By 1990, this figure had risen to 2.6% of the population. The 550,000 consultations with alternative therapists reported in the 1990 survey represented about an eighth of the total number of consultations with medically qualified personnel covered by the survey, according to Dr Laver and colleagues writing in the Australian Journal of Public Health in 1993. ‘A better educated and less accepting public has become disillusioned with the experts in general and increasingly skeptical about science and empirically based knowledge,’ they said. ‘The high standing of professionals, including doctors, has been eroded as a consequence.’

Rather than resisting or criticizing this trend, increasing numbers of Australian doctors, particularly younger ones, are forming group practices with alternative therapists or taking courses themselves, particularly in acupuncture and herbalism. Part of the incentive was financial, Dr Laver said. ‘The bottom line is that most general practitioners are business people. If they see potential clientele going elsewhere, they might want to be able to offer a similar service.’

In 1993, Dr Laver and his colleagues published a survey of 289 Sydney people who attended eight alternative therapists’ practices in Sydney. These practices offered a wide range of alternative therapies from 25 therapists. Those surveyed had experience chronic illnesses, for which orthodox medicine had been able to provide little relief. They commented that they liked the holistic approach of their alternative therapists and the friendly, concerned and detailed attention they had received. The cold, impersonal manner of orthodox doctors featured in the survey. An increasing exodus from their clinics, coupled with this and a number of other relevant surveys carried out in Australia, all pointing to orthodox doctors’ inadequacies, have led mainstream doctors themselves to begin to admit they could learn from the personal style of alternative therapists. Dr Patrick Store, President of the Royal College of General Practitioners, concurs that orthodox doctors could learn a lot about beside manner and advising patients on preventative health from alternative therapists.

According to the Australian Journal of Public Health, 18% of patients visiting alternative therapists do so because they suffer from muscular-skeletal complaints; 12% suffer from digestive problems, which is only 1% more than those suffering from emotional problems. Those suffering from respiratory complaints represent 7% of their patients, and candida sufferers represent an equal percentage. Headache sufferers and those complaining of general ill health represent 6% and 5% of patients respectively, and a further 4% see therapists for general health maintenance.

The survey suggested that complementary medicine is probably a better term than alternative medicine. Alternative medicine appears to be an adjunct, sought in times of disenchantment when conventional medicine seems not to offer the answer.

Questions 14 and 15
Choose the correct letter, A, B, C or D.

14 Traditionally, how have Australian doctors differed from doctors in many Western countries?
A They have worked closely with pharmaceutical companies.
B They have often worked alongside other therapists.
C They have been reluctant to accept alternative therapists.
D They have regularly prescribed alternative remedies.

15 In 1990, Americans
A were prescribed more herbal medicines than in previous years.
B consulted alternative therapists more often than doctors.
C spent more on natural therapies than orthodox medicines.
D made more complaints about doctors than in previous years.

Questions 16-23
Do the following statements agree with the views of the writer in Reading Passage 2?

YES                           if the statement agrees with the views of the writer
NO                             if the statement contradicts the views of the writer
NOT GIVEN          if it is impossible to say what the writer thinks about this

16 Australians have been turning to alternative therapies in increasing numbers over the past 20 years.
17 Between 1983 and 1990 the numbers of patients visiting alternative therapists rose to include a further 8% of the population.
18 The 1990 survey related to 550,000 consultations with alternative therapists.
19 In the past, Australians had a higher opinion, of doctors than they do today.
20 Some Australian doctors -are retraining in alternative therapies.
21 Alternative therapists earn higher salaries than doctors.
22 The 1993 Sydney survey involved 289 patients who visited alternative therapists for acupuncture treatment.
23 All the patients in the 1993 Sydney survey had long-term medical complaints.

Questions 24-26
Complete the vertical axis in the chart below. Write NO MORE THAN THREE WORDS.

PLAY IS A SERIOUS BUSINESS

A Playing is a serious business. Children engrossed in a make-believe world, fox cubs play-fighting or kittens teasing a ball of string aren’t just having fun. Play may look like a carefree and exuberant way to pass the time before the hard work of adulthood comes along, but there’s much more to it than that. For a start, play can even cost animals their lives. Eighty per cent of deaths among juvenile fur seals occur because playing pups fail to spot predators approaching. It is also extremely expensive in terms of energy. Playful young animals use around two or three per cent of their energy cavorting, and in children that figure can be closer to fifteen per cent. ‘Even wo or three per cent is huge,’ says John Byers of Idaho University. ‘You just don’t find animals wasting energy like that,’ he adds. There must be a reason.

B But if play is not simply a developmental hiccup, as biologists once thought, why did it evolve? The latest idea suggests that play has evolved to build big brains. In other words, playing makes you intelligent. Playfulness, it seems, is common only among mammals, although a few of the larger-brained birds also indulge. Animals at play often use unique signs – tail- wagging in dogs, for example – to indicate that activity superficially resembling adult behavior is not really in earnest. A popular explanation of play has been that it helps juveniles develop the skills they will need to hunt, mate and socialise as adults. Another has been that it allows young animals to get in shape for adult life by improving their respiratory endurance. Both these ideas have been questioned in recent years.

C Take the exercise theory. If play evolved to build muscle or as a kind of endurance training, then you would expect to see permanent benefits. But Byers points out that the benefits of increased exercise disappear rapidly after training stops, so any improvement in endurance resulting from juvenile play would be lost by adulthood. ‘If the function of play was to get into shape,’ says Byers, ‘the optimum time for playing would depend on when it was most advantageous for the young of a particular species to do so, But it doesn’t work like that.’ Across species, play tends to peak about halfway through the suckling stage and then decline.

D Then there’s the skills-training hypothesis. At first glance, playing animals do appear to be practising die complex manoeuvres they will need in adulthood. But a closer inspection reveals this interpretation as too simplistic. In one study, behavioural ecologist Tim Caro, from the University of California, looked at the predatory play of kittens and their predatory behaviour when they reached adulthood. He found that the way the cats played had no significant effect on their hunting prowess in later life.

E Earlier this year, Sergio Pellis of Lethbridge University, Canada, reported that there is a strong positive link between brain size and playfulness among mammals in general. Comparing measurements for fifteen orders of mammal, he and his team found larger brains (for a given body size) are linked to greater playfulness. The converse was also found to be true. Robert Barton of Durham University believes that, because large brains are more sensitive to developmental stimuli than smaller brains, they require more play to help mould them for adulthood. “I concluded it’s to do with learning, and with the importance of environmental data to the brain during development,” he says.

F According to Byers, the timing of the playful stage in young animals provides an important clue to what’s going on. If you plot the amount of time a juvenile devotes to play each day over the course of its development, you discover a pattern typically associated with a ‘sensitive period’ – a brief development window during which the brain can actually be modified in ways that are not possible earlier or later in life. Think of the relative ease with which young children – but not infants or adults – absorb language. Other researchers have found that play in cats, rats and mice is at its most intense just as this ‘window of opportunity’ reaches its peak.

G ‘People have not paid enough attention to the amount of the brain activated by play,’ says Marc Bekoff from Colorado University. Bekoff studied coyote pups at play and found that the kind of behaviour involved was markedly more variable and unpredictable than that of adults. Such behaviour activates many different parts of the brain, he reasons. Bekoff likens it to a behavioural kaleidoscope, with animals at play jumping rapidly between activities. ‘They use behaviour from a lot of different contexts – predation, aggression, reproduction/ he says. ‘Their developing brain is getting all sorts of stimulation.

H Not only is more of the brain involved in play than was suspected, but it also seems to activate higher cognitive processes. ‘There’s enormous cognitive involvement in play’, says Bekoff. He points out that play often involves complex assessments of playmates, ideas of reciprocity and the use of specialised signals and rules. He believes that play creates a brain that has greater behavioural flexibility and improved potential for learning later in life. The idea is backed up by the work of Stephen Siviy of Gettysburg College. Siviy studied how bouts of play affected the brain’s levels of a particular chemical associated with the stimulation and growth of nerve cells. He was surprised by the extent of the activation. ‘Play just lights everything up/ he says. By allowing link-ups between brain areas that might not normally communicate with each other, play may enhance creativity.

I What might further experimentation suggest about the way children are raised in many societies today? We already know that rat pups denied the chance to play grow smaller brain components and fail to develop the ability to apply social rules when they interact with their peers. With schooling beginning earlier and becoming increasingly exam-orientated, play is likely to get even less of a look-in. Who knows what the result of that will be?

Questions 27-32
Reading Passage 3 has nine paragraphs labelled A-I. Which paragraph contains the following information?
Write the correct letter A-I in boxes 27-32 on your answer sheet. NB You may use any letter more than once.

27 the way play causes unusual connections in the brain which are beneficial
28 insights from recording how much time young animals spend playing
29 a description of the physical hazards that can accompany play
30 a description of the mental activities which are exercised and developed during play
31 the possible effects that a reduction in play opportunities will have on humans
32 the classes of animals for which play is important

Questions 33-35
Choose THREE letters A-F. Write your answers in boxes 33-35 on your answer sheet.
The list below gives some ways of regarding play.

Which THREE ways are mentioned by the writer of the text?

A a rehearsal for later adult activities
B a method animals use to prove themselves to their peer group
C an activity intended to build up strength for adulthoood
D a means of communicating feelings
E a defensive strategy
F an activity assisting organ growth

Questions 36-40
Look at the following researchers (Questions 36-40) and the list of findings below. Match each researcher with the correct finding. Write the correct letter A-H in boxes 36-40 on your answer sheet.

36 Robert Barton
37 Marc Bekofif
38 John Byers
39 Sergio Pellis
40 Stephen Siviy

List of Findings
A There is a link between a specific substance in the brain and playing
B Play provides input concerning physical surroundings
C Varieties of play can be matched to different stages of evolutionary history
D There is a tendency for mammals with smaller brains to play less
E Play is not a form of fitness training for the future
F Some species of larger brained birds engage in play
G A wide range of activities are combined during play
H Play is a method of teaching survival techniques

Aphantasia : A life without mental images

Most people can readily conjure images inside their head – known as their mind’s eye. But this year scientists have described a condition, aphantasia, in which some people are unable to visualise mental images.

Niel Kenmuir, from Lancaster, has always had a blind mind’s eye. He knew he was different even in childhood. “My stepfather, when I couldn’t sleep, told me to count sheep, and he explained what he meant, I tried to do it and I couldn’t,” he says. “I couldn’t see any sheep jumping over fences, there was nothing to count.”

Our memories are often tied up in images, think back to a wedding or first day at school. As a result, Niel admits, some aspects of his memory are “terrible”, but he is very good at remembering facts. And, like others with aphantasia, he struggles to recognise faces. Yet he does not see aphantasia as a disability, but simply a different way of experiencing life.

Mind’s eye blind
Ironically, Niel now works in a bookshop, although he largely sticks to the non-fiction aisles. His condition begs the question what is going on inside his picture-less mind. I asked him what happens when he tries to picture his fiancee. “This is the hardest thing to describe, what happens in my head when I think about things,” he says. “When I think about my fiancee there is no image, but I am definitely thinking about her, I know today she has her hair up at the back, she’s brunette. But I’m not describing an image I am looking at, I’m remembering features about her, that’s the strangest thing and maybe that is a source of some regret.”

The response from his mates is a very sympathetic: “You’re weird.” But while Niel is very relaxed about his inability to picture things, it is a cause of distress for others. One person who took part in a study into aphantasia said he had started to feel “isolated” and “alone” after discovering that other people could see images in their heads. Being unable to reminisce about his mother years after her death led to him being “extremely distraught”.

The super-visualiser
At the other end of the spectrum is children’s book illustrator, Lauren Beard, whose work on the Fairytale Hairdresser series will be familiar to many six-year-olds. Her career relies on the vivid images that leap into her mind’s eye when she reads text from her author. When I met her in her box-room studio in Manchester, she was working on a dramatic scene in the next book. The text describes a baby perilously climbing onto a chandelier.

“Straightaway I can visualise this grand glass chandelier in some sort of French kind of ballroom, and the little baby just swinging off it and really heavy thick curtains,” she says. “I think I have a strong imagination, so I can create the world and then keep adding to it so it gets sort of bigger and bigger in my mind and the characters too they sort of evolve. I couldn’t really imagine what it’s like to not imagine, I think it must be a bit of a shame really.”
Not many people have mental imagery as vibrant as Lauren or as blank as Niel. They are the two extremes of visualisation. Adam Zeman, a professor of cognitive and behavioural neurology, wants to compare the lives and experiences of people with aphantasia and its polar-opposite hyperphantasia. His team, based at the University of Exeter, coined the term aphantasia this year in a study in the journal Cortex.

Prof Zeman tells the BBC: “People who have contacted us say they are really delighted that this has been recognised and has been given a name, because they have been trying to explain to people for years that there is this oddity that they find hard to convey to others.” How we imagine is clearly very subjective – one person’s vivid scene could be another’s grainy picture. But Prof Zeman is certain that aphantasia is real. People often report being able to dream in pictures, and there have been reported cases of people losing the ability to think in images after a brain injury.

He is adamant that aphantasia is “not a disorder” and says it may affect up to one in 50 people. But he adds: “I think it makes quite an important difference to their experience of life because many of us spend our lives with imagery hovering somewhere in the mind’s eye which we inspect from time to time, it’s a variability of human experience.”

Questions 1–5

Do the following statements agree with the information in the IELTS reading text?
In boxes 1-5 on your answer sheet, write

TRUE                            if the statement agrees with the information
FALSE                          if the statement contradicts the information
NOT GIVEN               if there is no information on this

1. Aphantasia is a condition, which describes people, for whom it is hard to see images in their imagination.
2. Niel Kenmuir was unable to count sheep in his head.
3. Many people with aphantasia struggle to remember personal traits of different people.
4. The author met Lauren Beard when she was working on a scene in her next book.
5. Different people expressed their satisfaction that the problem of aphantasia and hyperphantasia has finally been recognized.

Questions 6–8
Choose the correct letter, A, B, C or D.
Write the correct letter in boxes 6–8 on your answer sheet.

6. People with aphantasia are generally good at:
A Remembering faces
B Remembering facts
C Remembering traits
D This condition has no advantages

7. Unlike Niel, Lauren:
A Can visualise different objects
B Can write books
C Has aphantasia
D Has no conditions

8. Adam Zeman wants to:
A Cure aphantasia
B Compare people with different conditions
C Do researches
D Learn more about aphantasia and hyperphantasia

Questions 9–14

Complete the sentences below. Write NO MORE THAN TWO WORDS from the passage for each answer.

9. Niel’s colleagues describe him as a………………………….. person.
10. Only a small fraction of people have imagination as…………………………. as Lauren does.
11. Hyperphantasia is………………………. to aphantasia.
12. Many people spend their lives with……………………………. somewhere in the mind’s eye.
13. Prof Zeman is………………………………. that aphantasia is not an illness.
14. Prof Zeman strongly believes that aphantasia is not a………………

As More Tech Start-Ups Stay Private, So Does the Money

Not long ago, if you were a young, brash technologist with a world-conquering start-up idea, there was a good chance you spent much of your waking life working toward a single business milestone: taking your company public. Though luminaries of the tech industry have always expressed skepticism and even hostility toward the finance industry, tech’s dirty secret was that it looked to Wall Street and the ritual of a public offering for affirmation — not to mention wealth.

But something strange has happened in the last couple of years: The initial public offering of stock has become déclassé. For start-up entrepreneurs and their employees across Silicon Valley, an initial public offering is no longer a main goal. Instead, many founders talk about going public as a necessary evil to be postponed as long as possible because it comes with more problems than benefits. “If you can get $200 million from private sources, then yeah, I don’t want my company under the scrutiny of the unwashed masses who don’t understand my business,” said Danielle Morrill, the chief executive of Mattermark, a start-up that organizes and sells information about the start-up market. “That’s actually terrifying to me.

Silicon Valley’s sudden distaste for the I.P.O. — rooted in part in Wall Street’s skepticism of new tech stocks — may be the single most important psychological shift underlying the current tech boom. Staying private affords start-up executives the luxury of not worrying what outsiders think and helps them avoid the quarterly earnings treadmill. It also means Wall Street is doing what it failed to do in the last tech boom: using traditional metrics like growth and profitability to price companies. Investors have been tough on Twitter, for example, because its user growth has slowed. They have been tough on Box, the cloud-storage company that went public last year, because it remains unprofitable. And the e-commerce company Zulily, which went public last year, was likewise punished when it cut its guidance for future sales.

Scott Kupor, the managing partner at the venture capital firm Andreessen Horowitz, and his colleagues said in a recent report that despite all the attention start-ups have received in recent years, tech stocks are not seeing unusually high valuations. In fact, their share of the overall market has remained stable for 14 years, and far off the peak of the late 1990s. That unwillingness to cut much slack to young tech companies limits risk for regular investors. If the bubble pops, the unwashed masses, if that’s what we are, aren’t as likely to get washed out.

Private investors, on the other hand, are making big bets on so-called unicorns — the Silicon Valley jargon for start-up companies valued at more than a billion dollars. If many of those unicorns flop, most Americans will escape unharmed, because losses will be confined to venture capitalists and hedge funds that have begun to buy into tech start-ups, as well as tech founders and their employees. The reluctance — and sometimes inability — to go public is spurring the unicorns. By relying on private investors for a longer period of time, start-ups get more runway to figure out sustainable business models. To delay their entrance into the public markets, firms like Airbnb, Dropbox, Palantir, Pinterest, Uber and several other large start-ups are raising hundreds of millions, and in some cases billions, that they would otherwise have gained through an initial public offering.

“These companies are going public, just in the private market,” Dan Levitan, the managing partner of the venture capital firm Maveron, told me recently. He means that in many cases, hedge funds and other global investors that would have bought shares in these firms after an I.P.O. are deciding to go into late-stage private rounds. There is even an oxymoronic term for the act of obtaining private money in place of a public offering: It’s called a “private I.P.O.” The delay in I.P.O.s has altered how some venture capital firms do business. Rather than waiting for an initial offering, Maveron, for instance, says it now sells its stake in a start-up to other, larger private investors once it has made about 100 times its initial investment. It is the sort of return that once was only possible after an I.P.O.

But there is also a downside to the new aversion to initial offerings. When the unicorns do eventually go public and begin to soar — or whatever it is that fantastical horned beasts tend to do when they’re healthy — the biggest winners will be the private investors that are now bearing most of the risk. It used to be that public investors who got in on the ground floor of an initial offering could earn historic gains. If you invested $1,000 in Amazon at its I.P.O. in 1997, you would now have nearly $250,000. If you had invested $1,000 in Microsoft in 1986, you would have close to half a million. Public investors today are unlikely to get anywhere near such gains from tech I.P.O.s. By the time tech companies come to the market, the biggest gains have already been extracted by private backers.

Just 53 technology companies went public in 2014, which is around the median since 1980, but far fewer than during the boom of the late 1990s and 2000, when hundreds of tech companies went public annually, according to statistics maintained by Jay Ritter, a professor of finance at the University of Florida. Today’s companies are also waiting longer. In 2014, the typical tech company hitting the markets was 11 years old, compared with a median age of seven years for tech I.P.O.s since 1980. Over the last few weeks, I’ve asked several founders and investors why they’re waiting; few were willing to speak on the record about their own companies, but their answers all amounted to “What’s the point?”

Initial public offerings were also ways to compensate employees and founders who owned lots of stock, but there are now novel mechanisms — such as selling shares on a secondary market — for insiders to cash in on some of their shares in private companies. Still, some observers cautioned that the new trend may be a bad deal for employees who aren’t given much information about the company’s performance. “One thing employees may be confused about is when companies tell them, ‘We’re basically doing a private I.P.O.,’ it might make them feel like there’s less risk than there really is,” said Ms. Morrill of Mattermark. But she said it was hard to persuade people that their paper gains may never materialize. “The Kool-Aid is really strong,” she said.

If the delay in I.P.O.s becomes a normal condition for Silicon Valley, some observers say tech companies may need to consider new forms of compensation for workers. “We probably need to fundamentally rethink how do private companies compensate employees, because that’s going to be an issue,” said Mr. Kupor, of Andreessen Horowitz.
During a recent presentation for Andreessen Horowitz’s limited partners — the institutions that give money to the venture firm — Marc Andreessen, the firm’s co-founder, told the journalist Dan Primack that he had never seen a sharper divergence in how investors treat public- and private-company chief executives. “They tell the public C.E.O., ‘Give us the money back this quarter,’ and they tell the private C.E.O., ‘No problem, go for 10 years,’ ” Mr. Andreessen said.

At some point this tension will be resolved. “Private valuations will not forever be higher than public valuations,” said Mr. Levitan, of Maveron. “So the question is, Will private markets capitulate and go down or will public markets go up?” If the private investors are wrong, employees, founders and a lot of hedge funds could be in for a reckoning. But if they’re right, it will be you and me wearing the frown — the public investors who missed out on the next big thing.

Questions 15-18
Choose the correct letter, A, B, C or D.

15. How much funds would you gain by now, if you had invested 1000$ in the Amazon in 1997?
A $250,000
B close to $500,000
C it is not stated in the text
D no funds

16. Nowadays founders talk about going public as a:
A necessity
B benefit
C possibility
D profit

17. In which time period was the biggest number of companies going public?
A early 1990s
B late 1900s and 2000s
C 1980s
D late 1990s

18. According to the text, which of the following is true?
A Private valuations may be forever higher than public ones.
B Public valuations eventually will become even less valuable.
C The main question is whether the public market increase or the private market decrease.
D The pressure might last for a long time.

Questions 19-23
Complete the sentences below. Write ONLY ONE WORD from the passage for each answer.

19. Skepticism was always expected by the………………………….of tech industry.
20. The new aversion to initial offerings has its………………….
21. Selling shares on a secondary market is considered a………………………….mechanism.
22. Workers’ compensation might be an…………………………
23. The public investors who failed to participate in the next big thing might be the ones wearing the…………….

Questions 24-27
Do the following statements agree with the information in the IELTS reading text?

TRUE                     if the statement agrees with the information
FALSE                   if the statement contradicts the information
NOT GIVEN        if there is no information on this

24. Private investors are bearing most of the risk.
25. Not many investors were willing to speak on the record.
26. The typical tech company hitting the markets in 1990s was 5 years old.
27. Marc Andreessen, the firm’s co-founder, expressed amazement with divergency in how investors treat public.

Reading Passage 3

When you think about it, kissing is strange and a bit icky. You share saliva with someone, sometimes for a prolonged period of time. One kiss could pass on 80 million bacteria, not all of them good. Yet everyone surely remembers their first kiss, in all its embarrassing or delightful detail, and kissing continues to play a big role in new romances. At least, it does in some societies. People in western societies may assume that romantic kissing is a universal human behaviour, but a new analysis suggests that less than half of all cultures actually do it. Kissing is also extremely rare in the animal kingdom.

So what’s really behind this odd behaviour? If it is useful, why don’t all animals do it – and all humans too? It turns out that the very fact that most animals don’t kiss helps explain why some do. According to a new study of kissing preferences, which looked at 168 cultures from around the world, only 46% of cultures kiss in the romantic sense.  Previous estimates had put the figure at 90%. The new study excluded parents kissing their children, and focused solely on romantic lip-on-lip action between couples.

Many hunter-gatherer groups showed no evidence of kissing or desire to do so. Some even considered it revolting. The Mehinaku tribe in Brazil reportedly said it was “gross”. Given that hunter-gatherer groups are the closest modern humans get to living our ancestral lifestyle, our ancestors may not have been kissing either. The study overturns the belief that romantic kissing is a near-universal human behaviour, says lead author William Jankowiak of the University of Nevada in Las Vegas. Instead it seems to be a product of western societies, passed on from one generation to the next, he says. There is some historical evidence to back that up.

Kissing as we do it today seems to be a fairly recent invention, says Rafael Wlodarski of the University of Oxford in the UK. He has trawled through records to find evidence of how kissing has changed. The oldest evidence of a kissing-type behaviour comes from Hindu Vedic Sanskrit texts from over 3,500 years ago. Kissing was described as inhaling each other’s soul. In contrast, Egyptian hieroglyphics picture people close to each other rather than pressing their lips together. So what is going on? Is kissing something we do naturally, but that some cultures have suppressed? Or is it something modern humans have invented? We can find some insight by looking at animals.

Our closest relatives, chimpanzees and bonobos, do kiss. Primatologist Frans de Waal of Emory University in Atlanta, Georgia, has seen many instances of chimps kissing and hugging after conflict. For chimpanzees, kissing is a form of reconciliation. It is more common among males than females. In other words, it is not a romantic behaviour. Their cousins the bonobos kiss more often, and they often use tongues while doing so. That’s perhaps not surprising, because bonobos are highly sexual beings. When two humans meet, we might shake hands. Bonobos have sex: the so-called bonobo handshake. They also use sex for many other kinds of bonding. So their kisses are not particularly romantic, either.

These two apes are exceptions. As far as we know, other animals do not kiss at all. They may nuzzle or touch their faces together, but even those that have lips don’t share saliva or purse and smack their lips together. They don’t need to. Take wild boars. Males produce a pungent smell that females find extremely attractive. The key chemical is a pheromone called androstenone that triggers the females’ desire to mate. From a female’s point of view this is a good thing, because males with the most androstonene are also the most fertile. Her sense of smell is so acute, she doesn’t need to get close enough to kiss the male.

The same is true of many other mammals. For example, female hamsters emit a pheromone that gets males very excited. Mice follow similar chemical traces to help them find partners that are genetically different, minimising the risk of accidental incest. Animals often release these pheromones in their urine. “Their urine is much more pungent,” says Wlodarski. “If there’s urine present in the environment they can assess compatibility through that.”

It’s not just mammals that have a great sense of smell. A male black widow spider can smell pheromones produced by a female that tell him if she has recently eaten. To minimise the risk of being eaten, he will only mate with her if she is not hungry. The point is, animals do not need to get close to each other to smell out a good potential mate. On the other hand, humans have an atrocious sense of smell, so we benefit from getting close. Smell isn’t the only cue we use to assess each other’s fitness, but studies have shown that it plays an important role in mate choice. A study published in 1995 showed that women, just like mice, prefer the smell of men who are genetically different from them. This makes sense, as mating with someone with different genes is likely to produce healthy offspring. Kissing is a great way to get close enough to sniff out your partner’s genes.

In 2013, Wlodarski examined kissing preferences in detail. He asked several hundred people what was most important when kissing someone. How they smelled featured highly, and the importance of smell increased when women were most fertile. It turns out that men also make a version of the pheromone that female boars find attractive. It is present in male sweat, and when women are exposed to it their arousal levels increase slightly.
Pheromones are a big part of how mammals chose a mate, says Wlodarski, and we share some of them. “We’ve inherited all of our biology from mammals, we’ve just added extra things through evolutionary time.”

On that view, kissing is just a culturally acceptable way to get close enough to another person to detect their pheromones. In some cultures, this sniffing behaviour turned into physical lip contact. It’s hard to pinpoint when this happened, but both serve the same purpose, says Wlodarski. So if you want to find a perfect match, you could forego kissing and start smelling people instead. You’ll find just as good a partner, and you won’t get half as many germs. Be prepared for some funny looks, though.

Questions 28-35
Do the following statements agree with the information in the IELTS reading text?
In boxes 28-32 on your answer sheet, write

TRUE                      if the statement agrees with the information
FALSE                    if the statement contradicts the information
NOT GIVEN         if there is no information on this

28. Both Easter and Wester societies presume that kissing is essential for any part of the world.
29. Our ancestors were not likely to kiss.
30. Chimpanzees and bonbons kiss not for the romance.
31. There are other animal, rather than apes, that kiss.
32. Scent might be important in choosing your partner.
33. Wlodarski surveyed several men to figure out the importance of kissing.
34. Majority of the microorganisms passed by kissing are beneficial for the body.
35. According to a Hindu text, kissing is a means to exchange souls.

Questions 36-39
Complete the sentences below. Write NO MORE THAN TWO WORDS from the passage for each answer.

36. According to the Mehinaku tribe, kissing is……………………….
37. Human tradition is to……………………when they meet.
38. A male black widow will mate with the female if only she is……………………….
39. Humans benefit from getting close due to the fact that we have an………………….of smell.

Question 40
Choose the correct letter, A, B, C or D.

40. Passage 3 can be described as:
A Strictly scientific text
B Historical article
C Article from a magazine
D Dystopian sketch

Making Time for Science

Chronobiology might sound a little futuristic – like something from a science fiction novel, perhaps – but it’s actually a field of study that concerns one of the oldest processes life on this planet has ever known: short-term rhythms of time and their effect on flora and fauna.

This can take many forms. Marine life, for example, is influenced by tidal patterns. Animals tend to be active or inactive depending on the position of the sun or moon. Numerous creatures, humans included, are largely diurnal – that is, they like to come out during the hours of sunlight. Nocturnal animals, such as bats and possums, prefer to forage by night. A third group are known as crepuscular: they thrive in the low- light of dawn and dusk and remain inactive at other hours.

When it comes to humans, chronobiologists are interested in what is known as the circadian rhythm. This is the complete cycle our bodies are naturally geared to undergo within the passage of a twenty-four hour day. Aside from sleeping at night and waking during the day, each cycle involves many other factors such as changes in blood pressure and body temperature. Not everyone has an identical circadian rhythm. ‘Night people’, for example, often describe how they find it very hard to operate during the morning, but become alert and focused by evening. This is a benign variation within circadian rhythms known as a chronotype.

Scientists have limited abilities to create durable modifications of chronobiological demands. Recent therapeutic developments for humans such as artificial light machines and melatonin administration can reset our circadian rhythms, for example, but our bodies can tell the difference and health suffers when we breach these natural rhythms for extended periods of time. Plants appear no more malleable in this respect; studies demonstrate that vegetables grown in season and ripened on the tree are far higher in essential nutrients than those grown in greenhouses and ripened by laser.

Knowledge of chronobiological patterns can have many pragmatic implications for our day-to-day lives. While contemporary living can sometimes appear to subjugate biology – after all, who needs circadian rhythms when we have caffeine pills, energy drinks, shift work and cities that never sleep? – keeping in synch with our body clock is important.

The average urban resident, for example, rouses at the eye-blearing time of 6.04 a.m., which researchers believe to be far too early. One study found that even rising at 7.00 a.m. has deleterious effects on health unless exercise is performed for 30 minutes afterward. The optimum moment has been whittled down to 7.22 a.m.; muscle aches, headaches and moodiness were reported to be lowest by participants in the study who awoke then.

Once you’re up and ready to go, what then? If you’re trying to shed some extra pounds, dieticians are adamant: never skip breakfast. This disorients your circadian rhythm and puts your body in starvation mode. The recommended course of action is to follow an intense workout with a carbohydrate-rich breakfast; the other way round and weight loss results are not as pronounced.

Morning is also great for breaking out the vitamins. Supplement absorption by the body is not temporal-dependent, but naturopath Pam Stone notes that the extra boost at breakfast helps us get energised for the day ahead. For improved absorption, Stone suggests pairing supplements with a food in which they are soluble and steering clear of caffeinated beverages. Finally, Stone warns to take care with storage; high potency is best for absorption, and warmth and humidity are known to deplete the potency of a supplement.

After-dinner espressos are becoming more of a tradition – we have the Italians to thank for that – but to prepare for a good night’s sleep we are better off putting the brakes on caffeine consumption as early as 3 p.m. With a seven hour half-life, a cup of coffee containing 90 mg of caffeine taken at this hour could still leave 45 mg of caffeine in your nervous system at ten o’clock that evening. It is essential that, by the time you are ready to sleep, your body is rid of all traces.

Evenings are important for winding down before sleep; however, dietician Geraldine Georgeou warns that an after-five carbohydrate-fast is more cultural myth than chronobiological demand. This will deprive your body of vital energy needs. Overloading your gut could lead to indigestion, though. Our digestive tracts do not shut down for the night entirely, but their work slows to a crawl as our bodies prepare for sleep. Consuming a modest snack should be entirely sufficient.

Questions 1-7
Do the following statements agree with the information given in Reading Passage 1? In boxes 1-7 on your answer sheet, write

TRUE                    if the statement agrees with the information
FALSE                  if the statement contradicts the information
NOT GIVEN       if there is no information on this

1 Chronobiology is the study of how living things have evolved over time.
2 The rise and fall of sea levels affects how sea creatures behave.
3 Most animals are active during the daytime.
4 Circadian rhythms identify how we do different things on different days.
5 A ‘night person’ can still have a healthy circadian rhythm.
6 New therapies can permanently change circadian rhythms without causing harm.
7 Naturally-produced vegetables have more nutritional value.

Questions 8-13
Choose the correct letter, A, B, C or D.
Write the correct letter in boxes 8-13 on your answer sheet.

8 What did researchers identify as the ideal time to wake up in the morning?
A 6.04
B 7.00
C 7.22
D 7.30

9 In order to lose weight, we should
A avoid eating breakfast
B eat a low carbohydrate breakfast
C exercise before breakfast
D exercise after breakfast

10 Which is NOT mentioned as a way to improve supplement absorption?
A avoiding drinks containing caffeine while taking supplements
B taking supplements at breakfast
C taking supplements with foods that can dissolve them
D storing supplements in a cool, dry environment

11 The best time to stop drinking coffee is
A mid-afternoon
B 10 p.m.
C only when feeling anxious
D after dinner

12 In the evening, we should
A stay away from carbohydrates
B stop exercising
C eat as much as possible
D eat a light meal

13 Which of the following phrases best describes the main aim of Reading Passage 1?
A to suggest healthier ways of eating, sleeping and exercising
B to describe how modern life has made chronobiology largely irrelevant
C to introduce chronobiology and describe some practical applications
D to plan a daily schedule that can alter our natural chronobiological rhythms

The Triune Brain

The first of our three brains to evolve is what scientists call the reptilian cortex. This brain sustains the elementary activities of animal survival such as respiration, adequate rest and a beating heart. We are not required to consciously “think” about these activities. The reptilian cortex also houses the “startle centre”, a mechanism that facilitates swift reactions to unexpected occurrences in our surroundings. That panicked lurch you experience when a door slams shut somewhere in the house, or the heightened awareness you feel when a twig cracks in a nearby bush while out on an evening stroll are both examples of the reptilian cortex at work. When it comes to our interaction with others, the reptilian brain offers up only the most basic impulses: aggression, mating, and territorial defence. There is no great difference, in this sense, between a crocodile defending its spot along the river and a turf war between two urban gangs.

Although the lizard may stake a claim to its habitat, it exerts total indifference toward the well-being of its young. Listen to the anguished squeal of a dolphin separated from its pod or witness the sight of elephants mourning their dead, however, and it is clear that a new development is at play. Scientists have identified this as the limbic cortex. Unique to mammals, the limbic cortex impels creatures to nurture their offspring by delivering feelings of tenderness and warmth to the parent when children are nearby. These same sensations also cause mammals to develop various types of social relations and kinship networks. When we are with others of “our kind” – be it at soccer practice, church, school or a nightclub – we experience positive sensations of togetherness, solidarity and comfort. If we spend too long away from these networks, then loneliness sets in and encourages us to seek companionship.

Only human capabilities extend far beyond the scope of these two cortexes. Humans eat, sleep and play, but we also speak, plot, rationalise and debate finer points of morality. Our unique abilities are the result of an expansive third brain – the neocortex – which engages with logic, reason and ideas. The power of the neocortex comes from its ability to think beyond the present, concrete moment. While other mammals are mainly restricted to impulsive actions (although some, such as apes, can learn and remember simple lessons), humans can think about the “big picture”. We can string together simple lessons (for example, an apple drops downwards from a tree; hurting others causes unhappiness) to develop complex theories of physical or social phenomena (such as the laws of gravity and a concern for human rights).

The neocortex is also responsible for the process by which we decide on and commit to particular courses of action. Strung together over time, these choices can accumulate into feats of progress unknown to other animals. Anticipating a better grade on the following morning’s exam, a student can ignore the limbic urge to socialise and go to sleep early instead. Over three years, this ongoing sacrifice translates into a first class degree and a scholarship to graduate school; over a lifetime, it can mean ground¬breaking contributions to human knowledge and development. The ability to sacrifice our drive for immediate satisfaction in order to benefit later is a product of the neocortex.

Understanding the triune brain can help us appreciate the different natures of brain damage and psychological disorders. The most devastating form of brain damage, for example, is a condition in which someone is understood to be brain dead. In this state a person appears merely unconscious – sleeping, perhaps – but this is illusory. Here, the reptilian brain is functioning on autopilot despite the permanent loss of other cortexes.

Disturbances to the limbic cortex are registered in a different manner. Pups with limbic damage can move around and feed themselves well enough but do not register the presence of their littermates. Scientists have observed how, after a limbic lobotomy ,“one impaired monkey stepped on his outraged peers as if treading on a log or a rock”. In our own species, limbic damage is closely related to sociopathic behaviour. Sociopaths in possession of fully-functioning neocortexes are often shrewd and emotionally intelligent people but lack any ability to relate to, empathise with or express concern for others.

One of the neurological wonders of history occurred when a railway worker named Phineas Gage survived an incident during which a metal rod skewered his skull, taking a considerable amount of his neocortex with it. Though Gage continued to live and work as before, his fellow employees observed a shift in the equilibrium of his personality. Gage’s animal propensities were now sharply pronounced while his intellectual abilities suffered; garrulous or obscene jokes replaced his once quick wit. New findings suggest, however, that Gage managed to soften these abrupt changes over time and rediscover an appropriate social manner. This would indicate that reparative therapy has the potential to help patients with advanced brain trauma to gain an improved quality of life.

Questions 14-22
Classify the following as typical of
A the reptilian cortex
B the limbic cortex
C the neocortex

Write the correct letter, A, B or C, in boxes 14-22 on your answer sheet.

14 giving up short-term happiness for future gains
15 maintaining the bodily functions necessary for life
16 experiencing the pain of losing another
17 forming communities and social groups
18 making a decision and carrying it out
19 guarding areas of land
20 developing explanations for things
21 looking after one’s young
22 responding quickly to sudden movement and noise

Questions 23-26
Complete the sentences below. Write NO MORE THAN TWO WORDS from the passage for each answer. Write your answers in boxes 23-26 on your answer sheet.

23 A person with only a functioning reptilian cortex is known as…………………
24 …………………………in humans is associated with limbic disruption.
25 An industrial accident caused Phineas Gage to lose part of his……………………….
26 After his accident, co-workers noticed an imbalance between Gage’s…………………………….and higher-order thinking.

HELIUM’S FUTURE UP IN THE AIR

A In recent years we have all been exposed to dire media reports concerning the impending demise of global coal and oil reserves, but the depletion of another key non-renewable resource continues without receiving much press at all. Helium – an inert, odourless, monatomic element known to lay people as the substance that makes balloons float and voices squeak when inhaled – could be gone from this planet within a generation.

B Helium itself is not rare; there is actually a plentiful supply of it in the cosmos. In fact, 24 per cent of our galaxy’s elemental mass consists of helium, which makes it the second most abundant element in our universe. Because of its lightness, however, most helium vanished from our own planet many years ago. Consequently, only a miniscule proportion – 0.00052%, to be exact – remains in earth’s atmosphere. Helium is the by¬product of millennia of radioactive decay from the elements thorium and uranium. The helium is mostly trapped in subterranean natural gas bunkers and commercially extracted through a method known as fractional distillation.

C The loss of helium on Earth would affect society greatly. Defying the perception of it as a novelty substance for parties and gimmicks, the element actually has many vital applications in society. Probably the most well known commercial usage is in airships and blimps (non-flammable helium replaced hydrogen as the lifting gas du jour after the Hindenburg catastrophe in 1932, during which an airship burst into flames and crashed to the ground killing some passengers and crew). But helium is also instrumental in deep-sea diving, where it is blended with nitrogen to mitigate the dangers of inhaling ordinary air under high pressure; as a cleaning agent for rocket engines; and, in its most prevalent use, as a coolant for superconducting magnets in hospital MRI (magnetic resonance imaging) scanners.

D The possibility of losing helium forever poses the threat of a real crisis because its unique qualities are extraordinarily difficult, if not impossible to duplicate (certainly, no biosynthetic ersatz product is close to approaching the point of feasibility for helium, even as similar developments continue apace for oil and coal). Helium is even cheerfully derided as a “loner” element since it does not adhere to other molecules like its cousin, hydrogen. According to Dr. Lee Sobotka, helium is the “most noble of gases, meaning it’s very stable and non-reactive for the most part … it has a closed electronic configuration, a very tightly bound atom. It is this coveting of its own electrons that prevents combination with other elements’. Another important attribute is helium’s unique boiling point, which is lower than that for any other element. The worsening global shortage could render millions of dollars of high-value, life-saving equipment totally useless. The dwindling supplies have already resulted in the postponement of research and development projects in physics laboratories and manufacturing plants around the world. There is an enormous supply and demand imbalance partly brought about by the expansion of high-tech manufacturing in Asia.

E The source of the problem is the Helium Privatisation Act (HPA), an American law passed in 1996 that requires the U.S. National Helium Reserve to liquidate its helium assets by 2015 regardless of the market price. Although intended to settle the original cost of the reserve by a U.S. Congress ignorant of its ramifications, the result of this fire sale is that global helium prices are so artificially deflated that few can be bothered recycling the substance or using it judiciously. Deflated values also mean that natural gas extractors see no reason to capture helium. Much is lost in the process of extraction. As Sobotka notes: “[t]he government had the good vision to store helium, and the question now is: Will the corporations have the vision to capture it when extracting natural gas, and consumers the wisdom to recycle? This takes long-term vision because present market forces are not sufficient to compel prudent practice”. For Nobel-prize laureate Robert Richardson, the U.S. government must be prevailed upon to repeal its privatisation policy as the country supplies over 80 per cent of global helium, mostly from the National Helium Reserve. For Richardson, a twenty- to fifty-fold increase in prices would provide incentives to recycle.

F A number of steps need to be taken in order to avert a costly predicament in the coming decades. Firstly, all existing supplies of helium ought to be conserved and released only by permit, with medical uses receiving precedence over other commercial or recreational demands. Secondly, conservation should be obligatory and enforced by a regulatory agency. At the moment some users, such as hospitals, tend to recycle diligently while others, such as NASA, squander massive amounts of helium. Lastly, research into alternatives to helium must begin in earnest.

Questions 27-31
Reading Passage 3 has six paragraphs, A-F.

Which paragraph contains the following information?

27 a use for helium which makes an activity safer
28 the possibility of creating an alternative to helium
29 a term which describes the process of how helium is taken out of the ground
30 a reason why users of helium do not make efforts to conserve it
31 a contrast between helium’s chemical properties and how non-scientists think about it

Questions 32-35
Do the following statements agree with the claims of the writer in Reading Passage 3? In boxes 32-35 on your answer sheet, write

YES                              if the statement agrees with the claims of the writer
NO                                if the statement contradicts the claims of the writer
NOT GIVEN              if it is impossible to say what the writer thinks about this

32 Helium chooses to be on its own.
33 Helium is a very cold substance.
34 High-tech industries in Asia use more helium than laboratories and manufacturers in other parts of the world.
35 The US Congress understood the possible consequences of the HPA.

Questions 36-40
Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer.

Sobotka argues that big business and users of helium need to help look after helium stocks because (36)………………… will not be encouraged through buying and selling alone. Richardson believes that the (37)………………………….needs to be withdrawn, as the U.S. provides most of the world’s helium. He argues that higher costs would mean people have (38)…………………………. to use the resource many times over.

People should need a (39)……………………………… to access helium that we still have. Furthermore, a (40)………………………….. should ensure that helium is used carefully.

ANT INTELLIGENCE

When we think of intelligent members of the animal kingdom, the creatures that spring immediately to mind are apes and monkeys. But in fact the social lives of some members of the insect kingdom are sufficiently complex to suggest more than a hint of intelligence. Among these, the world of the ant has come in for considerable scrutiny lately, and the idea that ants demonstrate sparks of cognition has certainly not been rejected by those involved in these investigations.

Ants store food, repel attackers and use chemical signals to contact one another in case of attack. Such chemical communication can be compared to the human use of visual and auditory channels (as in religious chants, advertising images and jingles, political slogans and martial music) to arouse and propagate moods and attitudes. The biologist Lewis Thomas wrote Ants are so much like human beings as to be an embarrassment. They farm fungi, raise aphids as livestock, launch armies to war, use chemical sprays to alarm and confuse enemies, capture slaves, engage in child labour, exchange information ceaselessly. They do everything but watch television.

However, in ants there is no cultural transmission – everything must be encoded in the genes – whereas in humans the opposite is true. Only basic instincts are carried in the genes of a newborn baby, other skills being learned from others in the community as the child grows up. It may seem that this cultural continuity gives us a huge advantage over ants. They have never mastered fire nor progressed. Their fungus farming and aphid herding crafts are sophisticated when compared to the agricultural skills of humans five thousand-years ago but have been totally overtaken by modem human agribusiness.

Or have they? The farming methods of ants are at least sustainable. They do not ruin environments or use enormous amounts of energy. Moreover, recent evidence suggests that the crop farming of ants may be more sophisticated and adaptable than was thought.

Ants were farmers fifty million years before humans were. Ants can’t digest the cellulose in leaves – but some fungi can. The ants therefore cultivate these fungi in their nests, bringing them leaves to feed on, and then use them as a source of food. Farmer ants secrete antibiotics to control other fungi that might act as ‘weeds’, and spread waste to fertilise the crop.

It was once thought that the fungus that ants cultivate was a single type that they had propagated, essentially unchanged from the distant past. Not so. Ulrich Mueller of Maryland and his colleagues genetically screened 862 different types of fungi taken from ants’ nests. These turned out to be highly diverse: it seems that ants are continually domesticating new species. Even more impressively, DNA analysis of the fungi suggests that the ants improve or modify the fungi by regularly swapping and sharing strains with neigh boring ant colonies.

Whereas prehistoric man had no exposure to urban lifestyles – the forcing house, of intelligence – the evidence suggests that ants have lived in urban settings for close on a hundred million years, developing and maintaining underground cities of specialised chambers and tunnels.

When we survey Mexico City, Tokyo, Los Angeles, we are amazed at what has been accomplished by humans. Yet Hoelldobler and Wilson’s magnificent work for ant lovers, the Ants, describes a supercolony of the ant Formica yessensis on the Ishikari Coast of Hokkaido. This ‘megalopolis’ was reported to be composed of 360 million workers and a million queens living in 4,500 interconnected nests across a territory of 2.7 square kilometers.

Such enduring and intricately meshed levels of technical achievement outstrip by far anything achieved by our distant ancestors. We hail as masterpieces the cave paintings in southern France and elsewhere, dating back some 20,000 years. Ant societies existed in something like their present form more than seventy million years ago. Beside this, prehistoric man looks technologically primitive. Is this then some kind of intelligence, albeit of a different kind?

Research conducted at Oxford, Sussex and Zurich Universities has shown that when; desert ants return from a foraging trip, they navigate by integrating bearings and distances, which they continuously update their heads. They combine the evidence of visual landmarks with a mental library of local directions, all within a framework which is consulted and updated. So ants can learn too.

And in a twelve-year programme of work, Ryabko and Reznikova have found evidence that ants can transmit very complex messages. Scouts who had located food in a maze returned to mobilise their foraging teams. They engaged in contact sessions, at the end of which the scout was removed in order to observe what her team might do. Often the foragers proceeded to the exact spot in the maze where the food had been Elaborate precautions were taken to prevent the foraging team using odour clues. Discussion now centers on whether the route through the maze is communicated as a ‘left- right sequence of turns or as a ‘compass bearing and distance’ message.

During the course of this exhaustive study, Reznikova has grown so attached to her laboratory ants that she feels she knows them as individuals – even without the paint spots used to mark them. It’s no surprise that Edward Wilson, in his essay, ‘In the company of ants’, advises readers who ask what to do with the ants in their kitchen to: ‘Watch where you step. Be careful of little lives.’

Questions 1-6
Do the following statements agree with the information given in Reading Passage 1? In boxes 1-6 on your answer sheet, write:

TRUE                     if the statement agrees with the information
FALSE                   if the statement contradicts the information
NOT GIVEN        if there is no information on this

1 Ants use the same channels of communication as humans do.
2 City life is one factor that encourages the development of intelligence.
3 Ants can build large cities more quickly than humans do.
4 Some ants can find their way by making calculations based on distance and position.
5 In one experiment, foraging teams were able to use their sense of smell to find food.
6 The essay. ‘In the company of ants’ explores ant communication.

Questions 7-13
Complete the summary using the list of words, A-O, below. Write the correct letter, A-O, in boxes 7-13 on your answer sheet.

Ants as farmers
Ants have sophisticated methods of farming, including herding livestock and growing crops, which are in many ways similar to those used in human agriculture. The ants cultivate a large number of different species of edible fungi which convert (7)………………… into a form which they can digest. They use their own natural (8)………………… as weed-killers and also use unwanted materials as (9)…………………… Genetic analysis shows they constantly upgrade these fungi by developing new species and by (10)………………… species with neighboring ant colonies. In fact, the farming methods of ants could be said to be more advanced than human agribusiness, since they use (11)………………… methods, they do not affect the (12)……………… and do not waste (13)……………………

A aphids	B agricultural	C cellulose	D exchanging
E energy	F fertilizers	G food	H fungi
I growing	J interbreeding	K natural	L other species
M secretions	N sustainable	O environment

POPULATION MOVEMENT AND GENETICS

A Study of the origins and distribution of human populations used to be based on archaeological and fossil evidence. A number of techniques developed since the 1950s, however, have placed the study of these subjects on a sounder and more objective footing. The best information on early population movements is now being obtained from the ‘archaeology of the living body’, the clues to be found in genetic material.

B Recent work on the problem of when people first entered the Americas is an example of the value of these new techniques. North-east Asia and Siberia have long been accepted as the launching ground for the first human colonisers of the New World*. But was there one major wave of migration across the Bering Strait into the Americas, or several? And when did this event, or events, take place? In recent years, new clues have come from research into genetics, including the distribution of genetic markers in modern Native Americans.

C An important project, led by the biological anthropologist Robert Williams, focused on the variants (called Gm allotypes) of one particular protein – immunoglobin G — found in the fluid portion of human blood. All proteins ‘drift’, or produce variants, over the generations, and members of an interbreeding human population will share a set of such variants. Thus, by comparing the Gm allotypes of two different populations (e.g. two Indian tribes), one can establish their genetic ‘distance’, which itself can be calibrated to give an indication of the length of time since these populations last interbred.

D Williams and his colleagues sampled the blood of over 5,000 American Indians in western North America during a twenty- year period. They found that their Gm allotypes could be divided into two groups, one of which also corresponded to the genetic typing of Central and South American Indians. Other tests showed that the Inuit (or Eskimo) and Aleut formed a third group. From this evidence it was deduced that there had been three major waves of migration across the Bering Strait. The first, Paleo-lndian, wave more than 15,000 years ago was ancestral to all Central and South American Indians. The second wave, about 14,000-12,000 years ago, brought Na-Dene hunters, ancestors of the Navajo and Apache (who only migrated south from Canada about 600 or 700 years ago). The third wave, perhaps 10,000 or 9,000 years ago, saw the migration from North-east Asia of groups ancestral to the modern Eskimo and Aleut.

E How far does other research support these conclusions? Geneticist Douglas Wallace has studied mitochondrial DNA in blood samples from three widely separated Native American groups: Pima- Papago Indians in Arizona, Maya Indians on the Yucatdn peninsula, Mexico, and Ticuna Indians in the Upper Amazon region of Brazil. As would have been predicted by Robert Williams’s work, all three groups appear to be descended from the same ancestral (Paleo-lndian) population.

F There are two other kinds of research that have thrown some light on the origins of the Native American population; they involve the study of teeth and of languages. The biological anthropologist Christy Turner is an expert in the analysis of changing physical characteristics in human teeth. He argues that tooth crowns and roots have a high genetic component, minimally affected by environmental and other factors. Studies carried out by Turner of many thousands of New and Old World specimens, both ancient and modern, suggest that the majority of prehistoric Americans are linked to Northern Asian populations by crown and root traits such as incisor6 shoveling (a scooping out on one or both surfaces of the tooth), single-rooted upper first premolars6 and triple-rooted lower first molars.

According to Turner, this ties in with the idea of a single Paleo-lndian migration out of North Asia, which he sets at before 14,000 years ago by calibrating rates of dental micro-evolution. Tooth analyses also suggest that there were two later migrations of Na-Denes and Eskimo- Aleut.

G The linguist Joseph Greenberg has, since the 1950s, argued that all Native American languages belong to a single ‘Amerind’ family, except for Na-Dene and Eskimo-Aleut – a view that gives credence to the idea of three main migrations. Greenberg is in a minority among fellow linguists, most of whom favour the notion of a great many waves of migration to account for the more than 1,000 languages spoken at one time by American Indians. But there is no doubt that the new genetic and dental evidence provides strong backing for Greenberg’s view. Dates given for the migrations should nevertheless be treated with caution, except where supported by hard archaeological evidence.

Questions 14-19
Reading Passage 2 has seven sections, A-G. Choose the correct headings for sections A-F from the list of headings below. Write the correct number, i-x, in boxes 14-19 on your answer sheet.

List of Headings

i The results of the research into blood-variants
ii Dental evidence
iii Greenberg’s analysis of the dental and linguistic evidence
iv Developments in the methods used to study early population movements
v Indian migration from Canada to the U.S.A.
vi Further genetic evidence relating to the three-wave theory
vii Long-standing questions about prehistoric migration to America
viii Conflicting views of the three-wave theory, based on non-genetic Evidence
ix Questions about the causes of prehistoric migration to America
x How analysis of blood-variants measures the closeness of the relationship between different populations

14 Passage A
15 Passage B
16 Passage C
17 Passage D
18 Passage E
19 Passage F

Example Section G                viii

Questions 20 and 21
The discussion of Williams’s research indicates the periods at which early people are thought to have migrated along certain routes. There are six routes, A-F, marked on the map below.

Complete the form below. Write the correct letter A-F in boxes 20 and 21 on your answer sheet.

Route	Period (number of years ago)
(20)…………………..	15,000 or more
(21)…………………..	600 to 700

Questions 22-25
Reading Passage 2 refers to the three-wave theory of early migration to the Americas. It also suggests in which of these three waves the ancestors of various groups of modern native Americans first reached the continent.

Classify the groups named in the table below as originating from
A the first wave
B the second wave
C the third wave

Write the correct letter A, B or C in boxes on your answer sheet.

Name of Group	Wave Number
Inuit	(22)………………………….
Apache	(23)………………………….
Pima-Papago	(24)………………………….
Ticuna	(25)………………………….

Question 26

Choose the correct letter A, B, C or D. Write the correct letter in box 26 on your answer sheet.

26. Christy Turner’s research involved the examination of

A teeth from both prehistoric and modern Americans and Asians

B thousands of people who live in either the New of the Old World

C dental specimens from the majority of prehistoric Americans

D the eating habits of American and Asian populations

READING PASSAGE 3

Forests are one of the main elements of our natural heritage. The decline of Europe’s forests over the last decade and a half has led to an increasing awareness and understanding of the serious imbalances which threaten them. European countries are becoming increasingly concerned by major threats to European forests, threats which know no frontiers other than those of geography or climate: air pollution, soil deterioration, the increasing number of forest fires and sometimes even the mismanagement of our woodland and forest heritage. There has been a growing awareness of the need for countries to get together to co-ordinate their policies. In December 1990, Strasbourg hosted the first Ministerial Conference on the protection of Europe’s forests. The conference brought together 31 countries from both Western and Eastern Europe. The topics discussed included the coordinated study of the destruction of forests, as well as how to combat forest fires and the extension of European research programs on the forest ecosystem. The preparatory work for the conference had been undertaken at two meetings of experts. Their initial task was to decide which of the many forest problems of concern to Europe involved the largest number of countries and might be the subject of joint action. Those confined to particular geographical areas, such as countries bordering the Mediterranean or the Nordic countries therefore had to be discarded. However, this does not mean that in future they will be ignored.

As a whole, European countries see forests as performing a triple function: biological, economic and recreational. The first is to act as a ‘green lung’ for our planet; by means of photosynthesis, forests produce oxygen through the transformation of solar energy, thus fulfilling what for humans is the essential role of an immense, non-polluting power plant. At the same time, forests provide raw materials for human activities through their constantly renewed production of wood. Finally, they offer those condemned to spend five days a week in an urban environment an unrivalled area of freedom to unwind and take part in a range of leisure activities, such as hunting, riding and hiking. The economic importance of forests has been understood since the dawn of man – wood was the first fuel. The other aspects have been recognised only for a few centuries but they are becoming more and more important. Hence, there is a real concern throughout Europe about the damage to the forest environment which threatens these three basic roles.

The myth of the ‘natural’ forest has survived, yet there are effectively no remaining ‘primary’ forests in Europe. All European forests are artificial, having been adapted and exploited by man for thousands of years. This means that a forest policy is vital, that it must transcend national frontiers and generations of people, and that it must allow for the inevitable changes that take place in the forests, in needs, and hence in policy. The Strasbourg conference was one of the first events on such a scale to reach this conclusion. A general declaration was made that ‘a central place in any ecologically coherent forest policy must be given to continuity over time and to the possible effects of unforeseen events, to ensure that the full potential of these forests is maintained.

That general declaration was accompanied by six detailed resolutions to assist national policy-making. The first proposes the extension and systematisation of surveillance sites to monitor forest decline. Forest decline is still poorly understood but leads to the loss of a high proportion of a tree’s needles or leaves. The entire continent and the majority of species are now affected: between 30% and 50% of the tree population. The condition appears to result from the cumulative effect of a number of factors, with atmospheric pollutants the principal culprits. Compounds of nitrogen and sulphur dioxide should be particularly closely watched. However, their effects are probably accentuated by climatic factors, such as drought and hard winters, or soil imbalances such as soil acidification, which damages the roots. The second resolution concentrates on the need to preserve the genetic diversity of European forests. The aim is to reverse the decline in the number of tree species or at least to preserve the ‘genetic material’ of all of them. Although forest fires do not affect all of Europe to the same extent, the amount of damage caused the experts to propose as the third resolution that the Strasbourg conference consider the establishment of a European databank on the subject. All information used in the development of national preventative policies would become generally available. The subject of the fourth resolution discussed by the ministers was mountain forests. In Europe, it is undoubtedly the mountain ecosystem which has changed most rapidly and is most at risk. A thinly scattered permanent population and development of leisure activities, particularly skiing, have resulted in significant long-term changes to the local ecosystems. Proposed developments include a preferential research program on mountain forests. The fifth resolution relaunched the European research network on the physiology of trees, called Eurosilva. Eurosilva should support joint European research on tree diseases and their physiological and biochemical aspects. Each country concerned could increase the number of scholarships and other financial support for doctoral theses and research projects in this area. Finally, the conference established the framework for a European research network on forest ecosystems. This would also involve harmonising activities in individual countries as well as identifying a number of priority research topics relating to the protection of forests. The Strasbourg conference’s main concern was to provide for the future. This was the initial motivation, one now shared by all 31 participants representing 31 European countries. Their final text commits them to on-going discussion between government representatives with responsibility for forests.

Questions 27-33
Do the following statements agree with the information given in Reading Passage 3? In boxes 27-33 on your answer sheet, write

TRUE                        if the statement agrees with the information
FALSE                      if the statement contradicts the information
NOT GIVEN           if there is no information on this

27 Forest problems of Mediterranean countries are to be discussed at the next meeting of experts.
28 Problems in Nordic countries were excluded because they are outside the European Economic Community.
29 Forests are a renewable source of raw material.
30 The biological functions of forests were recognised only in the twentieth century.
31 Natural forests still exist in parts of Europe.
32 Forest policy should be limited by national boundaries.
33 The Strasbourg conference decided that a forest policy must allow for the possibility of change.

Questions 34-39
Look at the following statements issued by the conference.
Which SIX of the following statements. A-J, refer to the resolutions that were issued?

Match the statements with the appropriate resolutions (Questions 34-39).

A All kinds of species of trees should be preserved.
B Fragile mountain forests should be given priority in research programs.
C The surviving natural forests of Europe do not need priority treatment.
D Research is to be better co-ordinate throughout Europe.
E Information on forest fires should be collected and shared.
F Loss Of leaves from trees should be more extensively and carefully monitored.
G Resources should be allocated to research into tree diseases.
H Skiing should be encouraged in thinly populated areas.
I Soil imbalances such as acidification should be treated with compounds of nitrogen and sulphur.
J Information is to be systematically gathered on any decline in the condition of forests.

34 Resolution 1
35 Resolution 2
36 Resolution 3
37 Resolution 4
38 Resolution 5
39 Resolution 6

Question 40
Choose the correct letter, A. B, C or D. Write the correct letter in box 40 on your answer sheet

40 What is the best title for Reading Passage 3?
A The biological, economic and recreational role of forests
B Plans to protect the forests of Europe
C The priority of European research into ecosystems
D Proposals for a world-wide policy on forest management

Pulling Strings to Build Pyramids

The pyramids of Egypt were built more than three thousand years ago, and no one knows how. The conventional picture is that tens of thousands of slaves dragged stones on sledges. But there is no evidence to back this up. Now a Californian software consultant called Maureen Clemmons has suggested that kites might have been involved. While perusing a book on the monuments of Egypt, she noticed a hieroglyph that showed a row of men standing in odd postures. They were holding what looked like ropes that led, via some kind of mechanical system, to a giant bird in the sky. She wondered if perhaps the bird was actually a giant kite, and the men were using it to lift a heavy object.

Intrigued, Clemmons contacted Morteza Gharib, aeronautics professor at the California Institute of Technology. He was fascinated by the idea. ‘Coming from Iran, I have a keen interest in Middle Eastern science/ he says. He too was puzzled by the picture that had sparked Clemmons’s interest. The object in the sky apparently had wings far too short and wide for a bird. ‘The possibility certainly existed that it was a kite,’ he says. And since he needed a summer project for his student Emilio Graff, investigating the possibility of using kites as heavy lifters seemed like a good idea.

Gharib and Graff set themselves the task of raising a 4.5-metre stone column from horizontal to vertical, using no source of energy except the wind. Their initial calculations and scale-model wind-tunnel experiments convinced them they wouldn’t need a strong wind to lift the 33.5-tonne column. Even a modest force, if sustained over a long time, would do. The key was to use a pulley system that would magnify the applied force. So they rigged up a tent-shaped scaffold directly above the tip of the horizontal column, with pulleys suspended from the scaffold’s apex. The idea was that as one end of the column rose, the base would roll across the ground on a trolley.

Earlier this year, the team put Clemmons’s unlikely theory to the test, using a 40-square- metre rectangular nylon sail. The kite lifted the column clean off the ground. ‘We were absolutely stunned,’ Gharib says. The instant the sail opened into the wind, a huge force was generated and the column was raised to the vertical in a mere 40 seconds.’

The wind was blowing at a gentle 16 to 20 kilometres an hour, little more than half what they thought would be needed. What they had failed to reckon with was what happened when the kite was opened. There was a huge initial force – five times larger than the steady state force,’ Gharib says. This jerk meant that kites could lift huge weights, Gharib realised. Even a 300-tonne column could have been lifted to the vertical with 40 or so men and four or five sails. So Clemmons was right: the pyramid, builders could have used kites to lift massive stones into place. Whether they actually did is another matter,’ Gharib says.

There are no pictures showing the construction of the pyramids, so there is no way to tell what really happened. The evidence for using kites to move large stones is no better or worse than the evidence for the brute force method,’ Gharib says.

Indeed, the experiments have left many specialists unconvinced. The evidence for kite-lifting is non-existent,’ says Willeke Wendrich, an associate professor of Egyptology at the University of California, Los Angeles. Others feel there is more of a case for the theory. Harnessing the wind would not have been a problem for accomplished sailors like the Egyptians. And they are known to have used wooden pulleys, which could have been made strong enough to bear the weight of massive blocks of stone. In addition, there is some physical evidence that the ancient Egyptians were interested in flight. A wooden artefact found on the step pyramid at Saqqara looks uncannily like a modem glider. Although it dates from several hundred years after the building of the pyramids, its sophistication suggests that the Egyptians might have been developing ideas of flight for a long time. And other ancient civilisations certainly knew about kites; as early as 1250 BC, the Chinese were using them to deliver messages and dump flaming debris on their foes.

The experiments might even have practical uses nowadays. There are plenty of places around the globe where people have no access to heavy machinery, but do know how to deal with wind, sailing and basic mechanical principles. Gharib has already been contacted by a civil engineer in Nicaragua, who wants to put up buildings with adobe roofs supported by concrete arches on a site that heavy equipment can’t reach. His idea is to build the arcnes horizontally, then lift them into place using kites. We’ve given him some design hints,’ says Gharib. We’re just waiting for him to report back.’ So whether they were actually used to build the pyramids or not, it seems that kites may make sensible construction tools in the 21st century AD.

Questions 1-7
Do the following statement with the information given in Reading Passage 1? In boxes 1-7 on your answer sheet, write

TRUE                        if the statement agrees with the information
FALSE                      if the statement contradicts the information
NOT GIVEN           if there is no information on this

1 It is generally believed that large numbers of people were needed to build the pyramids.
2 Clemmons found a strange hieroglyph on the wall of an Egyptian monument.
3 Gharib had previously done experiments on bird flight.
4 Gharib and Graff tested their theory before applying it.
5 The success of the actual experiment was due to the high speed of the wind.
6 They found that, as the kite flew higher, the wind force got stronger.
7 The team decided that it was possible to use kites to raise very heavy stones.

Questions 8-13
Complete the summary below. Choose NO MORE THAN TWO WORDS from the passage for each answer.

Addition evidence for theory of kite lifting

The Egyptians had (8)………………, which could lift large pieces of (9)……………….., and they knew how to use the energy of the wind from their skill as (10)………………. The discovery on one pyramid of an object which resembled a (11)…………….. suggests they may have experimented with (12) …………… In addition, over two thousand years ago kites used in china as weapons, as well as for sending (13)………………

Endless Harvest

More than two hundred years ago, Russian explorers and fur hunters landed on the Aleutian Islands, a volcanic archipelago in the North Pacific, and learned of a land mass that lay farther to the north. The islands’ native inhabitants called this land mass Aleyska, the ‘Great Land’; today, we know it as Alaska.

The forty-ninth state to join the United States of America (in 1959), Alaska is fully one-fifth the size of the mainland 48 states combined. It shares, with Canada, the second longest river system in North America and has over half the coastline of the United States. The rivers feed into the Bering Sea and Gulf of Alaska – cold, nutrient-rich waters which support tens of millions of seabirds, and over 400 species of fish, shellfish, crustaceans, and molluscs. Taking advantage of this rich bounty, Alaska’s commercial fisheries have developed into some of the largest in the world.

According to the Alaska Department of Fish and Game (ADF&G), Alaska’s commercial fisheries landed hundreds of thousands of tonnes of shellfish and herring, and well over a million tonnes of groundfish (cod, sole, perch and pollock) in 2000. The true cultural heart and soul of Alaska’s fisheries, however, is salmon. ‘Salmon,’ notes writer Susan Ewing in The Great Alaska Nature Factbook, ‘pump through Alaska like blood through a heart, bringing rhythmic, circulating nourishment to land, animals and people.’ The ‘predictable abundance of salmon allowed some native cultures to flourish,’ and ‘dying spawners feed bears, eagles, other animals, and ultimately the soil itself.’ All five species of Pacific salmon – chinook, or king; chum, or dog; coho, or silver; sockeye, or red; and pink, or humpback – spawn in Alaskan waters, and 90% of all Pacific salmon commercially caught in North America are produced there. Indeed, if Alaska was an independent nation, it would be tire largest producer of wild salmon in the world. During 2000, commercial catches of Pacific salmon in Alaska exceeded 320,000 tonnes, with an ex-vessel value of over $260 million.

Catches have not always been so healthy. Between 1940 and 1959, overfishing led to crashes in salmon populations so severe that in 1953 Alaska was declared a federal disaster area. With the onset of statehood, however, the State of Alaska took over management of its own fisheries, guided by a state constitution which mandates that Alaska’s natural resources be managed on a sustainable basis. At that time, statewide harvests totalled around 25 million salmon. Over the next few decades average catches steadily increased as a result of this policy of sustainable management, until, during the 1990s, annual harvests were well in excess of 100 million, several occasions over 200 million fish.

The primary reason for such increases is what is known as ‘In-Season Abundance-Based Management’. There are biologists throughout the state constantly monitoring adult fish as they show up to spawn. The biologists sit in streamside counting towers, study sonar, watch from aeroplanes, and talk to fishermen. The salmon season in Alaska is not pre-set. The fishermen know the approximate time of year when they will be allowed to fish, but on any given day, one or more field biologists in a particular area can put a halt to fishing. Even sport fishing can be brought to a halt. It is this management mechanism that has allowed Alaska salmon stocks — and, accordingly, Alaska salmon fisheries — to prosper, even as salmon populations in the rest of the United States are increasingly considered threatened or even endangered.

In 1999, the Marine Stewardship Council (MSC) commissioned a review of the Alaska salmon fishery. The Council, which was founded in 1996, certifies fisheries that meet high environmental standards, enabling them to use a label that recognises their environmental responsibility. The MSC has established a set of criteria by which commercial fisheries can be judged. Recognising the potential benefits of being identified as environmentally responsible, fisheries approach the Council requesting to undergo the certification process. The MSC then appoints a certification committee, composed of a panel of fisheries experts, which gathers information and opinions from fishermen, biologists, government officials, industry representatives, non-governmental organisations and others.

Some observers thought the Alaska salmon fisheries would not have any chance of certification when, in the months leading up to MSC’s final decision, salmon runs throughout western Alaska completely collapsed. In the Yukon and Kuskokwim rivers, chinook and chum runs were probably the poorest since statehood; subsistence communities throughout the region, who normally have priority over commercial fishing, were devastated.

The crisis was completely unexpected, but researchers believe it had nothing to do with impacts of fisheries. Rather, they contend, it was almost certainly the result of climatic shifts, prompted in part by cumulative effects of the el nino/la nina phenomenon on Pacific Ocean temperatures, culminating in a harsh winter in which huge numbers of salmon eggs were frozen. It could have meant the end as far as the certification process was concerned. However, the state reacted quickly, closing down all fisheries, even those necessary for subsistence purposes.

In September 2000, MSC announced that the Alaska salmon fisheries qualified for certification. Seven companies producing Alaska salmon were immediately granted permission to display the MSC logo on their products. Certification is for an initial period of five years, with an annual review to ensure that the fishery is continuing to meet the required standards.

Questions 14-20
Do the following statements agree with the information given in Reading Passage 2? In boxes 14-20 on your answer sheet, write

TRUE                         if the statement agrees with the information
FALSE                       if the statement contradicts the information
NOT GIVEN            if there is no information on this

14 The inhabitants of the Aleutian islands renamed their islands Aleyska
15 Alaska’s fisheries are owned by some of the world’s largest companies.
16 Life in Alaska is dependent on salmon.
17 Ninety per cent of all Pacific salmon caught are sockeye or pink salmon.
18 More than 320,000 tonnes of salmon were caught in Alaska in 2000.
19 Between 1940 and 1959, there was a sharp decrease in Alaska’s salmon population.
20 During the 1990s, the average number of salmon caught each year was 100 million.

Questions 21-26
Complete each sentence with the correct ending, A-K. below. Write the correct letter, A-K in boxes 21-26 on your answer sheet.

21 In Alaska, biologists keep a check on adult fish
22 Biologists have the authority
23 In-Season Abundance-Based Management has allowed the Alaska salmon fisheries
24 The Marine Stewardship Council (MSC) was established
25 As a result of the collapse of the salmon runs in 1999, the state decided
26 In September 2000, the MSC allowed seven Alaska salmon companies

A to recognise fisheries that care for the environment.
B to be successful.
C to stop fish from spawning
D to set up environmental protection laws.
E to stop people fishing for sport.
F to label their products using the MSC logo.
G to ensure that fish numbers are sufficient to permit fishing.
H to assist the subsistence communities in the region.
I to freeze a huge number of salmon eggs.
J to deny certification to the Alaska fisheries.
K to close down all-fisheries.

Effects of Noise

In general, it is plausible to suppose that we should prefer peace and quiet to noise. And yet most of us have had the experience of having to adjust to sleeping in the mountains or the countryside because it was initially ‘too quiet’, an experience that suggests that humans are capable of adapting to a wide range of noise levels. Research supports this view. For example, Glass and Singer (1972) exposed people to short bursts of very loud noise and then measured their ability to work out problems and their physiological reactions to the noise. The noise was quite disruptive at first, but after about four minutes the subjects were doing just as well on their tasks as control subjects who were not exposed to noise. Their physiological arousal also declined quickly to the same levels as those of the control subjects.

But there are limits to adaptation and loud noise becomes more troublesome if the person is required to concentrate on more than one task. For example, high noise levels interfered with the performance of subjects who were required to monitor three dials at a time, a task not unlike that of an aeroplane pilot or an air-traffic controller (Broadbent, 1957). Similarly, noise did not affect a subject’s ability to track a moving line with a steering wheel, but it did interfere with the subject’s ability to repeat numbers while tracking (Finkelman and Glass, 1970).

Probably the most significant finding from research on noise is that its predictability is more important than how loud it is. We are much more able to ‘tune out’ chronic background noise, even if it is quite loud, than to work under circumstances with unexpected intrusions of noise. In the Glass and Singer study, in which subjects were exposed to bursts of noise as they worked on a task, some subjects heard loud bursts and others heard soft bursts. For some subjects, the bursts were spaced exactly one minute apart (predictable noise); others heard the same amount of noise overall, but the bursts occurred at random intervals (unpredictable noise). Subjects reported finding the predictable and unpredictable noise equally annoying, and all subjects performed at about the same level during the noise portion of the experiment. But the different noise conditions had quite different after-effects when the subjects were required to proofread written material under conditions of no noise. As shown in Table 1 the unpredictable noise produced more errors in the later proofreading task than predictable noise; and soft, unpredictable noise actually produced slightly more errors on this task than the loud, predictable noise.

Apparently, unpredictable noise produces more fatigue than predictable noise, but it takes a while for this fatigue to take its toll on performance.

Predictability is not the only variable that reduces or eliminates the negative effects of noise. Another is control. If the individual knows that he or she can control the noise, this seems to eliminate both its negative effects at the time and its after-effects. This is true even if the individual never actually exercises his or her option to turn the noise off (Glass and Singer, 1972). Just the knowledge that one has control is sufficient.

The studies discussed so far exposed people to noise for only short periods and only transient effects were studied. But the major worry about noisy environments is that living day after day with chronic noise may produce serious, lasting effects. One study, suggesting that this worry is a realistic one, compared elementary school pupils who attended schools near Los Angeles’s busiest airport with students who attended schools in quiet neighbourhoods (Cohen et al., 1980). It was found that children from the noisy schools had higher blood pressure and were more easily distracted than those who attended the quiet schools. Moreover, there was no evidence of adaptability to the noise. In fact, the longer the children had attended the noisy schools, the more distractible they became. The effects also seem to be long lasting. A follow-up study showed that children who were moved to less noisy classrooms still showed greater distractibility one year later than students who had always been in the quiet schools (Cohen et al, 1981). It should be noted that the two groups of children had been carefully matched by the investigators so that they were comparable in age, ethnicity, race, and social class.

Questions 27-29
Choose the correct letter, A, B, C or D. Write the correct letter in boxes 27-29 on your answer sheet

27 The writer suggests that people may have difficulty sleeping in the mountains because
A humans do not prefer peace and quiet to noise.
B they may be exposed to short bursts of very strange sounds.
C humans prefer to hear a certain amount of noise while they sleep.
D they may have adapted to a higher noise level in the city.

28 In noise experiments, Glass and Singer found that
A problem-solving is much easier under quiet conditions.
B physiological arousal prevents the ability to work.
C bursts of noise do not seriously disrupt problem-solving in the long term.
D the physiological arousal of control subjects declined quickly.

29 Researchers discovered that high noise levels are not likely to interfere with the
A successful performance of a single task.
B tasks of pilots or air traffic controllers.
C ability to repeal numbers while tracking moving lines.
D ability to monitor three dials at once.

Questions 30-34
Complete the summary using the list of words and phrases, A-J. below. Write the correct letter A-J in boxes 30-34 on your answer sheet. NB You may use any letter more than once.

Glass and Singer (1972) showed that situations in which there is intense noise have less effect on performance than circumstances in which (30)……………………….. noise occurs. Subjects were divided into groups to perform a task. Some heard loud bursts of noise, others sort. For some subjects, the noise was predictable, while for others its occurrence was random. All groups were exposed to (31)……………………. noise. The predictable noise group (32)……………………. the unpredictable noise group on this task. In the second part of the experiment, the four groups were given a proofreading task to complete under conditions of no noise. They were required to check written material for errors. The group which had been exposed to unpredictable noise (33)……………… the group which had been exposed to predictable noise. The group which had been exposed to loud predictable noise performed better than those who” had heard soft, unpredictable bursts. The results suggest that (34)………………………… noise produces fatigue but that this manifests itself later.

A no control over
B unexpected
C intense
D the same amount of
E performed better than
F performed at about the same level as
G no
H showed more irritation than
I made more mistakes than
J different types of

Questions 35-40
Look at the following statements (Questions 35-40) and the list of researchers below. Match each statement with the correct researcher(s), A-E. Write the correct letter A-E, in boxes 35-40 on your answer sheet.

NB You may use any letter more than once.

35. Subjects exposed to noise find it difficult at first to concentrate on problem-solving tasks.
36. Long-term exposure to noise can produce changes in behavior which can still be observed a year later.
37. The problems associated with exposure to noise do not arise if the subject knows they can make it stop.
38. Exposure to high-pitched noise results in more errors than exposure to low-pitched noise
39. Subjects find it difficult to perform three tasks at the same time when exposed to noise
40. Noise affects a subject’s capacity to repeat numbers while carrying out another task.

List of Researchers

A Glass and Singer
B Broadbent
C Finke man and Glass
D Cohen et al.
E None of the above

A CHRONICLE OF TIMEKEEPING

A According to archaeological evidence, at least 5,000 years ago, and long before the advent of the Roman Empire, the Babylonians began to measure time, introducing calendars to co-ordinate communal activities, to plan the shipment of goods and, in particular, to regulate planting and harvesting. They based their calendars on three natural cycles: the solar day, marked by the successive periods of light and darkness as the earth rotates on its axis; the lunar month, following the phases of the moon as it orbits the earth; and the solar year, defined by the changing seasons that accompany our planet’s revolution around the sun.

B Before the invention of artificial light, the moon had greater social impact. And, for those living near the equator in particular, its waxing and waning was more conspicuous than the passing of the seasons. Hence, the calendars that were developed at the lower latitudes were influenced more by the lunar cycle than by the solar year. In more northern climes, however, where seasonal agriculture was practised, the solar year became more crucial. As the Roman Empire expanded northward, it organised its activity chart for the most part around the solar year.

C Centuries before the Roman Empire, the Egyptians had formulated a municipal calendar having 12 months of 30 days, with five days added to approximate the solar year. Each period of ten days was marked by the appearance of special groups of stars called decans. At the rise of the star Sirius just before sunrise, which occurred around the all-important annual flooding of the Nile, 12 decans could be seen spanning the heavens. The cosmic significance the Egyptians placed in the 12 decans led them to develop a system in which each interval of darkness (and later, each interval of daylight) was divided into a dozen equal parts. These periods became known as temporal hours because their duration varied according to the changing length of days and nights with the passing of the seasons. Summer hours were long, winter ones short; only at the spring and autumn equinoxes were the hours of daylight and darkness equal. Temporal hours, which were first adopted by the Greeks and then the Romans, who disseminated them through Europe, remained in use for more than 2,500 years.

D In order to track temporal hours during the day, inventors created sundials, which indicate time by the length or direction of the sun’s shadow. The sundial’s counterpart, the water clock, was designed to measure temporal hours at night. One of the first water clocks was a basin with a small hole near the bottom through which the water dripped out. The falling water level denoted the passing hour as it dipped below hour lines inscribed on the inner surface. Although these devices performed satisfactorily around the Mediterranean, they could not always be depended on in the cloudy and often freezing weather of northern Europe.

E The advent of the mechanical clock meant that although it could be adjusted to maintain temporal hours, it was naturally suited to keeping equal ones. With these, however, arose the question of when to begin counting, and so, in the early 14th century, a number of systems evolved. The schemes that divided the day into 24 equal parts varied according to the start of the count: Italian hours began at sunset, Babylonian hours at sunrise, astronomical hours at midday and ‘great clock’ hours, used for some large public clocks in Germany, at midnight. Eventually these were superseded by ‘small clock’, or French, hours, which split the day into two 12-hour periods commencing at midnight.

F The earliest recorded weight-driven mechanical clock was built in 1283 in Bedfordshire in England. The revolutionary aspect of this new timekeeper was neither the descending weight that provided its motive force nor the gear wheels (which had been around for at least 1,300 years) that transferred the power; it was the part called the escapement. In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring. By the 16th century, a pendulum clock had been devised, but the pendulum swung in a large arc and thus was not very efficient.

G To address this, a variation on the original escapement was invented in 1670, in England. It was called the anchor escapement, which was a lever-based device shaped like a ship’s anchor. The motion of a pendulum rocks this device so that it catches and then releases each tooth of the escape wheel, in turn allowing it to turn a precise amount. Unlike the original form used in early pendulum clocks, the anchor escapement permitted the pendulum to travel in a very small arc. Moreover, this invention allowed the use of a long pendulum which could beat once a second and thus led to the development of a new floor standing case design, which became known as the grandfather clock.

H Today, highly accurate timekeeping instruments set the beat for most electronic devices. Nearly all computers contain a quartz-crystal clock to regulate their operation. Moreover, not only do time signals beamed down from Global Positioning System satellites calibrate the functions of precision navigation equipment, they do so as well for mobile phones, instant stock-trading systems and nationwide power-distribution grids. So integral have these time-based technologies become to day-to-day existence that our dependency on them is recognised only when they fail to work.

Questions 1-4
Reading Passage 1 has eight paragraphs, A-H. Which paragraph contains the following information? Write the correct letter, A-H, in boxes 1- 4 on your answer sheet.

1 a description of an early timekeeping invention affected by cold temperatures
2 an explanation of the importance of geography in the development of the calendar in farming communities
3 a description of the origins of the pendulum clock
4 details of the simultaneous efforts of different societies to calculate time using uniform hours

Questions 5-8
Look at the following events (Questions 5-8) and the list of nationalities below. Match each event with the correct nationality, A-F. Write the correct letter, A-F, in boxes 5-8 on your answer sheet.

5 They devised a civil calendar in which the months were equal in length.
6 They divided the day into two equal halves.
7 They developed a new cabinet shape for a type of timekeeper.
8 They created a calendar to organise public events and work schedules.

A Babylonians
B Egyptians
C Greeks
D English
E Germans
F French

Questions 9-13
Label the diagram below. Write NO MORE THAN TWO WORDS from the passage.

AIR TRAFFIC CONTROL IN THE USA

A An accident that occurred in the skies over the Grand Canyon in 1956 resulted in the establishment of the Federal Aviation Administration (FAA) to regulate and oversee the operation of aircraft in the skies over the United States, which were becoming quite congested. The resulting structure of air traffic control has greatly increased the safety of flight in the United States, and similar air traffic control procedures are also in place over much of the rest of the world.

B Rudimentary air traffic control (АТС) existed well before the Grand Canyon disaster. As early as the 1920s, the earliest air traffic controllers manually guided aircraft in the vicinity of the airports, using lights and flags, while beacons and flashing lights were placed along cross-country routes to establish the earliest airways. However, this purely visual system was useless in bad weather, and, by the 1930s, radio communication was coming into use for АТС. The first region to have something approximating today’s АТС was New York City, with other major metropolitan areas following soon after.

C In the 1940s, АТС centres could and did take advantage of the newly developed radar and improved radio communication brought about by the Second World War, but the system remained rudimentary. It was only after the creation of the FAA that full-scale regulation of America’s airspace took place, and this was fortuitous, for the advent of the jet engine suddenly resulted in a large number of very fast planes, reducing pilots’ margin of error and practically demanding some set of rules to keep everyone well separated and operating safely in the air.

D Many people think that АТС consists of a row of controllers sitting in front of their radar screens at the nation’s airports, telling arriving and departing traffic what to do. This is a very incomplete part of the picture. The FAA realised that the airspace over the United States would at any time have many different kinds of planes, flying for many different purposes, in a variety of weather conditions, and the same kind of structure was needed to accommodate all of them.

E To meet this challenge, the following elements were put into effect. First, АТС extends over virtually the entire United States. In general, from 365m above the ground and higher, the entire country is blanketed by controlled airspace. In certain areas, mainly near airports, controlled airspace extends down to 215m above the ground, and, in the immediate vicinity of an airport, all the way down to the surface. Controlled airspace is that airspace in which FAA regulations apply. Elsewhere, in uncontrolled airspace, pilots are bound by fewer regulations. In this way, the recreational pilot who simply wishes to go flying for a while without all the restrictions imposed by the FAA has only to stay in uncontrolled airspace, below 365m, while the pilot who does want the protection afforded by АТС can easily enter the controlled airspace.

F The FAA then recognised two types of operating environments. In good meteorological conditions, flying would be permitted under Visual Flight Rules (VFR), which suggests a strong reliance on visual cues to maintain an acceptable level of safety. Poor visibility necessitated a set of Instrumental Flight Rules (IFR), under which the pilot relied on altitude and navigational information provided by the plane’s instrument panel to fly safely. On a clear day, a pilot in controlled airspace can choose a VFR or IFR flight plan, and the FAA regulations were devised in a way which accommodates both VFR and IFR operations in the same airspace. However, a pilot can only choose to fly IFR if they possess an instrument rating which is above and beyond the basic pilot’s license that must also be held.

G Controlled airspace is divided into several different types, designated by letters of the alphabet. Uncontrolled airspace is designated Class F, while controlled airspace below 5,490m above sea level and not in the vicinity of an airport is Class E. All airspace above 5,490m is designated Class A. The reason for the division of Class E and Class A airspace stems from the type of planes operating in them. Generally, Class E airspace is where one finds general aviation aircraft (few of which can climb above 5,490m anyway), and commercial turboprop aircraft. Above 5,490m is the realm of the heavy jets, since jet engines operate more efficiently at higher altitudes. The difference between Class E and A airspace is that in Class A, all operations are IFR, and pilots must be instrument-rated, that is, skilled and licensed in aircraft instrumentation. This is because АТС control of the entire space is essential. Three other types of airspace, Classes D, С and B, govern the vicinity of airports. These correspond roughly to small municipal, medium-sized metropolitan and major metropolitan airports respectively, and encompass an increasingly rigorous set of regulations. For example, all a VFR pilot has to do to enter Class С airspace is establish two-way radio contact with АТС. No explicit permission from АТС to enter is needed, although the pilot must continue to obey all regulations governing VFR flight. To enter Class В airspace, such as on approach to a major metropolitan airport, an explicit АТС clearance is required. The private pilot who cruises without permission into this airspace risks losing their license.

Questions 14-19
Reading passage 2 has seven paragraphs A-G. Choose the correct heading for paragraphs A and C-G from the list below. Write the correct number i-x in boxes 14-19 on your answer sheet.

List of Headings

i Disobeying FAA Regulations
ii Aviation disaster prompts action
iii Two coincidental developments
iv Setting Altitude Zones
v An oversimplified view
vi Controlling pilots’ licence
vii Defining airspace categories
viii Setting rules to weather conditions
ix Taking of Safety
x First step towards ATC

Example – Paragraph B                 x
14 Paragraph A
15 Paragraph C
16 Paragraph D
17 Paragraph E
18 Paragraph F
19 Paragraph G

Questions 20-26
Do the following statements agree with the given information of the reading passage? In boxes 20-26 on your answer sheet, write:

TRUE                          if the statement agrees with the information
FALSE                        if the statement contradicts the information
NOT GIVEN             if there is no information on this

20 The FAA was created as a result of the introduction of the jet engine.
21 Air traffic control started after the Grand Canyon crash in 1956.
22 Beacons and flashing lights are still used by the ATC today.
23 Some improvements were made in radio communication during World War II.
24 Class F airspace is airspace which is below 365m and not near airports.
25 All aircraft in class E airspace must use IFR.
26 A pilot entering class C airspace is flying over an average-sized city.

TELEPATHY

Since the 1970s, parapsychologists at leading universities and research institutes around the world have risked the derision of sceptical colleagues by putting the various claims for telepathy to the test in dozens of rigorous scientific studies. The results and their implications are dividing even the researchers who uncovered them.

Some researchers say the results constitute compelling evidence that telepathy is genuine. Other parapsychologists believe the field is on the brink of collapse, having tried to produce definitive scientific proof and failed. Sceptics and advocates alike do concur on one issue, however: that the most impressive evidence so far has come from the so-called ‘ganzfeld’ experiments, a German term that means ‘whole field’. Reports of telepathic experiences had by people during meditation led parapsychologists to suspect that telepathy might involve ‘signals’ passing between people that were so faint that they were usually swamped by normal brain activity. In this case, such signals might be more easily detected by those experiencing meditation-like tranquility in a relaxing ‘whole field’ of light, sound and warmth.

The ganzfeld experiment tries to recreate these conditions with participants sitting in soft reclining chairs in a sealed room, listening to relaxing sounds while their eyes are covered with special filters letting in only soft pink light. In early ganzfeld experiments, the telepathy test involved identification of a picture chosen from a random selection of four taken from a large image bank. The idea was that a person acting as a ‘sender’ would attempt to beam the image over to the ‘receiver’ relaxing in the sealed room. Once the session was over, this person was asked to identify which of the four images had been used. Random guessing would give a hit-rate of 25 per cent; if telepathy is real, however, the hit-rate would be higher. In 1982, the results from the first ganzfeld studies were analysed by one of its pioneers, the American parapsychologist Charles Honorton. They pointed to typical hit-rates of better than 30 per cent – a small effect, but one which statistical tests suggested could not be put down to chance.

The implication was that the ganzfeld method had revealed real evidence for telepathy. But there was a crucial flaw in this argument – one routinely overlooked in more conventional areas of science. Just because chance had been ruled out as an explanation did not prove telepathy must exist; there were many other ways of getting positive results. These ranged from ‘sensory leakage’ – where clues about the pictures accidentally reach the receiver – to outright fraud. In response, the researchers issued a review of all the ganzfeld studies done up to 1985 to show that 80 per cent had found statistically significant evidence. However, they also agreed that there were still too many problems in the experiments which could lead to positive results, and they drew up a list demanding new standards for future research.

After this, many researchers switched to autoganzfeld tests – an automated variant of the technique which used computers to perform many of the key tasks such as the random selection of images. By minimising human involvement, the idea was to minimise the risk of flawed results. In 1987, results from hundreds of autoganzfeld tests were studied by Honorton in a ‘meta-analysis’, a statistical technique for finding the overall results from a set of studies. Though less compelling than before, the outcome was still impressive.

Yet some parapsychologists remain disturbed by the lack of consistency between individual ganzfeld studies. Defenders of telepathy point out that demanding impressive evidence from every study ignores one basic statistical fact: it takes large samples to detect small effects. If, as current results suggest, telepathy produces hit-rates only marginally above the 25 per cent expected by chance, it’s unlikely to be detected by a typical ganzfeld study involving around 40 people: the group is just not big enough. Only when many studies are combined in a meta-analysis will the faint signal of telepathy really become apparent. And that is what researchers do seem to be finding.

What they are certainly not finding, however, is any change in attitude of mainstream scientists: most still totally reject the very idea of telepathy. The problem stems at least in part from the lack of any plausible mechanism for telepathy.

Various theories have been put forward, many focusing on esoteric ideas from theoretical physics. They include ‘quantum entanglement’, in which events affecting one group of atoms instantly affect another group, no matter how far apart they may be. While physicists have demonstrated entanglement with specially prepared atoms, no-one knows if it also exists between atoms making up human minds. Answering such questions would transform parapsychology. This has prompted some researchers to argue that the future lies not in collecting more evidence for telepathy, but in probing possible mechanisms. Some work has begun already, with researchers trying to identify people who are particularly successful in autoganzfeld trials. Early results show that creative and artistic people do much better than average: in one study at the University of Edinburgh, musicians achieved a hit-rate of 56 per cent. Perhaps more tests like these will eventually give the researchers the evidence they are seeking and strengthen the case for the existence of telepathy.

Questions 27-30
Complete each sentence with the correct ending, A —G, below. Write the correct letter, A—G, in boxes 27-30 on your answer sheet.

27 Researchers with differing attitudes towards telepathy agree on
28 Reports of experiences during meditation indicated
29 Attitudes to parapsychology would alter drastically with
30 Recent autoganzfeld trials suggest that success rates will improve with

A the discovery of a mechanism for telepathy.
B the need to create a suitable environment for telepathy.
C their claims of a high success rate.
D a solution to the problem posed by random guessing.
E the significance of the ganzfeld experiments.
F a more careful selection of subjects.
G a need to keep altering conditions.

Questions 31-40
Complete the table below. Choose NO MORE THAN THREE WORDS from the passage for each answer.
Write your answers in boxes 31-40 on your answer sheet.

TELEPATHY EXPERIMENTS

Name/ Date	Description	Result	Flas
Ganzfeld studies 1982	involved a person acting as a (31)……………….who picked out one (32)……………. from a random selection of four and a (33)………………. who then tried to identify it	hit rates were higher than with random guessing	positive results could be produced by factors such as (34)…………. or (35)…………..
Autoganzfeld studies 1987	(36)…………….were used for key tasks to limit the amount of (37)…………. in carrying out the tests	the results were then subjected to a (38)………….	the (39)………….. between different test results were put down to the fact that sample groups were not (40)…………. (as with most ganzfled studies)

Sheet Glass Manufacture: the Float Process

Glass, which has been made since the time of the Mesopotamians and Egyptians, is little more than a mixture of sand, soda ash and lime. When heated to about 1500 degrees Celsius (°C) this becomes a molten mass that hardens when slowly cooled. The first successful method for making clear, flat glass involved spinning. This method was very effective as the glass had not touched any surfaces between being soft and becoming hard, so it stayed perfectly unblemished, with a ‘fire finish’. However, the process took a long time and was labour intensive.

evertheless, demand for flat glass was very high and glassmakers across the world were looking for a method of making it continuously. The first continuous ribbon process involved squeezing molten glass through two hot rollers, similar to an old mangle. This allowed glass of virtually any thickness to be made non-stop, but the rollers would leave both sides of the glass marked, and these would then need to be ground and polished. This part of the process rubbed away around 20 per cent of the glass, and the machines were very expensive.

The float process for making flat glass was invented by Alistair Pilkington. This process allows the manufacture of clear, tinted and coated glass for buildings, and clear and tinted glass for vehicles. Pilkington had been experimenting with improving the melting process, and in 1952 he had the idea of using a bed of molten metal to form the flat glass, eliminating altogether the need for rollers within the float bath. The metal had to melt at a temperature less than the hardening point of glass (about 600°C), but could net boil at a temperature below the temperature of the molten glass (about 1500°C). The best metal for the job was tin.

The rest of the concept relied on gravity, which guaranteed that the surface of the molten metal was perfectly flat and horizontal. Consequently, when pouring molten glass onto the molten tin, the underside of the glass would also be perfectly flat. If the glass were kept hot enough, it would flow over the molten tin until the top surface was also flat, horizontal and perfectly parallel to the bottom surface. Once the glass cooled to 604°C or less it was too hard to mark and could be transported out of the cooling zone by rollers. The glass settled to a thickness of six millimetres because of surface tension interactions between the glass and the tin. By fortunate coincidence, 60 per cent of the flat glass market at that time was for six- millimetre glass.

Pilkington built a pilot plant in 1953 and by 1955 he had convinced his company to build a full-scale plant. However, it took 14 months of non-stop production, costing the company £100,000 a month, before the plant produced any usable glass. Furthermore, once they succeeded in making marketable flat glass, the machine was turned off for a service to prepare it for years of continuous production. When it started up again it took another four months to get the process right again. They finally succeeded in 1959 and there are now float plants all over the world, with each able to produce around 1000 tons of glass every day, non-stop for around 15 years.

Float plants today make glass of near optical quality. Several processes – melting, refining, homogenising – take place simultaneously in the 2000 tonnes of molten glass in the furnace. They occur in separate zones in a complex glass flow driven by high temperatures. It adds up to a continuous melting process, lasting as long as 50 hours, that delivers glass smoothly and continuously to the float bath, and from there to a coating zone and finally a heat treatment zone, where stresses formed during cooling are relieved.

The principle of float glass is unchanged since the 1950s. However, the product has changed dramatically, from a single thickness of 6.8 mm to a range from sub-millimetre to 25 mm, from a ribbon frequently marred by inclusions and bubbles to almost optical perfection. To ensure the highest quality, inspection takes place at every stage. Occasionally, a bubble is not removed during refining, a sand grain refuses to melt, a tremor in the tin puts ripples into the glass ribbon. Automated on-line inspection does two things. Firstly, it reveals process faults upstream that can be corrected. Inspection technology allows more than 100 million measurements a second to be made across the ribbon, locating flaws the unaided eye would be unable to see. Secondly, it enables computers downstream to steer cutters around flaws.

Float glass is sold by the square metre, and at the final stage computers translate customer requirements into patterns of cuts designed to minimise waste.

Questions 1-8
Complete the table and diagram below. Choose NO MORE THAN TWO WORDS from the passage for each answer.
Write your answers in boxes 1-8 on your answer sheet.

Questions 9-13
Do the following statements agree with the information given in Reading Passage 1? In boxes 9-13 on your answer sheet, write:

TRUE                          if the statement agrees with the information
FALSE                        if the statement contradicts the information
NOT GIVEN             if there is no information on this

9 The metal used in the float process had to have specific properties.
10 Pilkington invested some of his own money in his float plant.
11 Pilkington’s first full-scale plant was an instant commercial success.
12 The process invented by Pilkington has now been improved.
13 Computers are better than humans at detecting faults in glass.

The Little Ice Age

A This book will provide a detailed examination of the Little Ice Age and other climatic shifts, but, before I embark on that, let me provide a historical context. We tend to think of climate – as opposed to weather – as something unchanging, yet humanity has been at the mercy of climate change for its entire existence, with at least eight glacial episodes in the past 730,000 years. Our ancestors adapted to the universal but irregular global warming since the end of the last great Ice Age, around 10,000 years ago, with dazzling opportunism. They developed strategies for surviving harsh drought cycles, decades of heavy rainfall or unaccustomed cold; adopted agriculture and stock-raising, which revolutionised human life; and founded the world’s first pre-industrial civilisations in Egypt, Mesopotamia and the Americas. But the price of sudden climate change, in famine, disease and suffering, was often high.

B The Little Ice Age lasted from roughly 1300 until the middle of the nineteenth century. Only two centuries ago, Europe experienced a cycle of bitterly cold winters; mountain glaciers in the Swiss Alps were the lowest in recorded memory, and pack ice surrounded Iceland for much of the year. The climatic events of the Little Ice Age did more than help shape the modern world. They are the deeply important context for the current unprecedented global warming. The Little Ice Age was far from a deep freeze, however; rather an irregular seesaw of rapid climatic shifts, few lasting more than a quarter-century, driven by complex and still little understood interactions between the atmosphere and the ocean. The seesaw brought cycles of intensely cold winters and easterly winds, then switched abruptly to years of heavy spring and early summer rains, mild winters, and frequent Atlantic storms, or to periods of droughts, light northeasterly winds, and summer heat waves.

C Reconstructing the climate changes of the past is extremely difficult, because systematic weather observations began only a few centuries ago, in Europe and North America. Records from India and tropical Africa are even more recent.

For the time before records began, we have only ‘proxy records’ reconstructed largely from tree rings and ice cores, supplemented by a few incomplete written accounts. We now have hundreds of tree-ring records from throughout the northern hemisphere, and many from south of the equator, too, amplified with a growing body of temperature data from ice cores drilled in Antarctica, Greenland, the Peruvian Andes, and other locations. We are close to a knowledge of annual summer and winter temperature variations over much of the northern hemisphere going back 600 years.

D This book is a narrative history of climatic shifts during the past ten centuries, and some of the ways in which people in Europe adapted to them. Part One describes the Medieval Warm Period, roughly 900 to 1200. During these three centuries, Norse voyagers from Northern Europe explored northern seas, settled Greenland, and visited North America. It was not a time of uniform warmth, for then, as always since the Great Ice Age, there were constant shifts in rainfall and temperature. Mean European temperatures were about the same as today, perhaps slightly cooler.

E It is known that the Little Ice Age cooling began in Greenland and the Arctic in about 1200. As the Arctic ice pack spread southward, Norse voyages to the west were rerouted into the open Atlantic, then ended altogether. Storminess increased in the North Atlantic and North Sea. Colder, much wetter weather descended on Europe between 1315 and 1319, when thousands perished in a continent-wide famine. By 1400, the weather had become decidedly more unpredictable and stormier, with sudden shifts and lower temperatures that culminated in the cold decades of the late sixteenth century. Fish were a vital commodity in growing towns and cities, where food supplies were a constant concern. Dried cod and herring were already the staples of the European fish trade, but changes in water temperatures forced fishing fleets to work further offshore. The Basques, Dutch, and English developed the first offshore fishing boats adapted to a colder and stormier Atlantic. A gradual agricultural revolution in northern Europe stemmed from concerns over food supplies at a time of rising populations. The revolution involved intensive commercial farming and the growing of animal fodder on land not previously used for crops. The increased productivity from farmland made some countries self-sufficient in grain and livestock and offered effective protection against famine.

F Global temperatures began to rise slowly after 1850, with the beginning of the Modern Warm Period. There was a vast migration from Europe by land-hungry farmers and others, to which the famine caused by the Irish potato blight contributed, to North America, Australia, New Zealand, and southern Africa. Millions of hectares of forest and woodland fell before the newcomers’ axes between 1850 and 1890, as intensive European farming methods expanded across the world. The unprecedented land clearance released vast quantities of carbon dioxide into the atmosphere, triggering for the first time humanly caused global warming. Temperatures climbed more rapidly in the twentieth century as the use of fossil fuels proliferated and greenhouse gas levels continued to soar. The rise has been even steeper since the early 1980s. The Little Ice Age has given way to a new climatic regime, marked by prolonged and steady warming. At the same time, extreme weather events like Category 5 hurricanes are becoming more frequent.

Questions 14-17
Reading Passage 2 has six paragraphs, A—F. Choose the correct heading for paragraphs B and D—F from the list of headings below. Write the correct number, i—ix, in boxes 14-17 on your answer sheet.

List of Headings

i Predicting climatic changes
ii The relevance of the Little Ice Age today
iii How cities contribute to climate change
iv Human impact on the climate
v How past climatic conditions can be determined
vi A growing need for weather records
vii A study covering a thousand years
viii People have always responded to climate change
ix Enough food at last

Example Answer           Paragraph A                viii
14. Paragraph B
Example Answer           Paragraph C                 v
15 Paragraph D
16 Paragraph E
17 Paragraph F

Questions 18-22
Complete the summary using the list of words, A—I, below. Write the correct letter, A—I, in boxes 18-22 on your answer sheet.

Weather during the Little Ice Age
Documentation of past weather condition is limited: our main sources of knowledge of conditions in the distant past are (18)………………. and (19)………………… . We can deduce that the Little Ice Age was a time of (20)…………… , rather than of consistent freezing. Within it there were some periods of very cold winters, others of (21)…………. and heavy rain, and yet others that saw (22)…………. with no rain at all.

A climatic shifts                    B ice cores                      C tree rings

D glaciers                             E interactions                  F weather observations

G heat waves                       H storms                         I written accounts

Questions 23-26
Classify the following events as occurring during the

A Medieval Warm Period
B Little Ice Age
C Modem Warm Period

Write the correct letter, A, B or C, in boxes 23-26 on your answer sheet.

23 Many Europeans started farming abroad.
24 The cutting down of trees began to affect the climate.
25 Europeans discovered other lands.
26 Changes took place in fishing patterns.

The meaning and power of smell

A A survey conducted by Anthony Synott at Montreal’s Concordia University asked participants to comment on how important smell was to them in their lives. It became apparent that smell can evoke strong emotional responses. A scent associated with a good experience can bring a rush of joy, while a foul odour or one associated with a bad memory may make us grimace with disgust. Respondents to the survey noted that many of their olfactory likes and dislikes were based on emotional associations. Such associations can be powerful enough so that odours that we would generally label unpleasant become agreeable, and those that we would generally consider fragrant become disagreeable for particular individuals. The perception of smell, therefore, consists not only of the sensation of the odours themselves, but of the experiences and emotions associated with them.

B Odours are also essential cues in social bonding. One respondent to the survey believed that there is no true emotional bonding without touching and smelling a loved one. In fact, infants recognise the odours of their mothers soon after birth and adults can often identify their children or spouses by scent. In one well-known test, women and men were able to distinguish by smell alone clothing worn by their marriage partners from similar clothing worn by other people. Most of the subjects would probably never have given much thought to odour as a cue for identifying family members before being involved in the test, but as the experiment revealed, even when not consciously considered, smells register.

C In spite of its importance to our emotional and sensory lives, smell is probably the most undervalued sense in many cultures. The reason often given for the low regard in which smell is held is that, in comparison with its importance among animals, the human sense of smell is feeble and undeveloped. While it is true that the olfactory powers of humans are nothing like as fine as those possessed by certain animals, they are still remarkably acute. Our noses are able to recognise thousands of smells, and to perceive odours which are present only in extremely small quantities.

D Smell, however, is a highly elusive phenomenon. Odours, unlike colours, for instance, cannot be named in many languages because the specific vocabulary simply doesn’t exist. ‘It smells like . . .,’ we have to say when describing an odour, struggling to express our olfactory experience. Nor can odours be recorded: there is no effective way to either capture or store them over time. In the realm of olfaction, we must make do with descriptions and recollections. This has implications for olfactory research.

E Most of the research on smell undertaken to date has been of a physical scientific nature. Significant advances have been made in the understanding of the biological and chemical nature of olfaction, but many fundamental questions have yet to be answered. Researchers have still to decide whether smell is one sense or two – one responding to odours proper and the other registering odourless chemicals in the air. Other unanswered questions are whether the nose is the only part of the body affected by odours, and how smells can be measured objectively given the nonphysical components. Questions like these mean that interest in the psychology of smell is inevitably set to play an increasingly important role for researchers.

F However, smell is not simply a biological and psychological phenomenon. Smell is cultural, hence it is a social and historical phenomenon. Odours are invested with cultural values: smells that are considered to be offensive in some cultures may be perfectly acceptable in others. Therefore, our sense of smell is a means of, and model for, interacting with the world. Different smells can provide us with intimate and emotionally charged experiences and the value that we attach to these experiences is interiorised by the members of society in a deeply personal way. Importantly, our commonly held feelings about smells can help distinguish us from other cultures. The study of the cultural history of smell is, therefore, in a very real sense, an investigation into the essence of human culture.

Questions 27-32
Reading Passage 3 has six paragraphs, A—F. Choose the correct heading for each paragraph from the list of headings below.

Write the correct number, i—viii, in boxes 27-32 on your answer sheet.

List of Headings

i The difficulties of talking about smells
ii The role of smell in personal relationships
iii Future studies into smell
iv The relationship between the brain and the nose
v The interpretation of smells as a factor in defining groups
vi Why our sense of smell is not appreciated
vii Smell is our superior sense
viii The relationship between smell and feelings

27 Paragraph A
28 Paragraph B
29 Paragraph C
30 Paragraph D
31 Paragraph E
32 Paragraph F

Questions 33-36
Choose the correct letter, A, B, C or D. Write the correct letter in boxes 33-36 on your answer sheet.

33 According to the introduction, we become aware of the importance of smell when
A we discover a new smell
B we experience a powerful smell
C our ability to smell is damaged
D we are surrounded by odours

34 The experiment described in paragraph B
A shows how we make use of smell without realising it
B demonstrates that family members have a similar smell
C proves that a sense of smell is learnt
D compares the sense of smell in males and females

35 What is the writer doing in paragraph C?
A supporting other research
B making a proposal
C rejecting a common belief
D describing limitations

36 What does the writer suggest about the study of smell in the atmosphere in paragraph E?
A The measurement of smell is becoming more accurate
B Researchers believe smell is a purely physical reaction
C Most smells are inoffensive
D Smell is yet to be defined

Questions 37-40
Complete the sentences below. Choose ONE WORD ONLY from the passage for each answer.

37 Tests have shown that odours can help people recognise the………………..belonging to their husbands and wives.
38 Certain linguistic groups may have difficulty describing smell because they lack the appropriate……………
39 The sense of smell may involve response to…………………which do not smell, in addition to obvious odours.
40 Odours regarded as unpleasant in certain……………………….are not regarded as unpleasant in others.