剑桥雅思真题11 test 4 reading passage 3阅读词汇

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剑桥雅思阅读11原文(test4)READING PASSAGE 1You should spend about 20 minutes on Questions 1-13, which are based on Reading Passage 1 below.Research using twinsTo biomedical researchers all over the world, twins offer a precious opportunity to untangle the influence of genes and the environment —of nature and nurture. Because identical twins come from a single fertilized egg that splits into two, they share virtually the same genetic code. Any differences between them — one twin having younger looking skin, for example — must be due to environmental factors such as less time spent in the sun.Alternatively, by comparing the experiences of identical twins with those of fraternal twins, who come from separate eggs and share on average half their DNA, researchers can quantify the extent to which our genes affect our lives. If identical twins are more similar to each other with respect to an ailment than fraternal twins are, then vulnerability to the disease must be rooted at least in part in heredity.These two lines of research —studying the differences between identical twins to pinpoint the influence of environment, and comparing identical twins with fraternal ones to measure the role of inheritance —have been crucial to understanding the interplay of nature and nurture in determining our personalities,behavior, and vulnerability to disease.The idea of using twins to measure the influence of heredity dates back to 1875, when the English scientist Francis Galton first suggested the approach (and coined the phrase ‘nature and nurture’). But twin studies took a surprising twi st in the 1980s, with the arrival of studies into identical twins who had been separated at birth and reunited as adults. Over two decades 137 sets of twins eventually visited Thomas Bouchard’s lab in what became known as the Minnesota Study of Twins Reared Apart. Numerous tests were carried out on the twins, and they were each asked more than 15,000 questions.Bouchard and his colleagues used this mountain of data to identify how far twins were affected by their genetic makeup. The key to their approach was a statistical concept called heritability. In broad terms, the heritability of a trait measures the extent to which differences among members of a population can be explained by differences in their genetics. And wherever Bouchard and other scientists looked, it seemed, they found the invisible hand of genetic influence helping to shape our lives.Lately, however, twin studies have helped lead scientists to a radical new conclusion: that nature and nurture are not the only elemental forces at work. According to a recent field called epigenetics, there is a third factor also in play, one that in some cases serves as a bridge between the environment and our genes, and in others operates on its own to shape who we are.Epigenetic processes are chemical reactions tied to neither nature nor nurture but representing what researchers have called a ‘third component’. These reactions influence how our genetic code is expressed: how each gene is strengthened or weakened, even turned on or off, to build our bones, brains andall the other parts of our bodies.If you think of our DNA as an immense piano keyboard and our genes as the keys — each key symbolizing a segment of DNA responsible for a particular note, or trait, and all the keys combining to make us who we are — then epigenetic processes determine when and how each key can be struck, changing the tune being played.One way the study of epigenetics is revolutionizing our understanding of biology is by revealing a mechanism by which the environment directly impacts on genes. Studies of animals, for example, have shown that when a rat experiences stress during pregnancy, it can cause epigenetic changes in a fetus that lead to behavioral problems as the rodent grows up. Other epigenetic processes appear to occur randomly, while others are normal, such as those that guide embryonic cells as they become heart, brain, or liver cells, for example.Geneticist Danielle Reed has worked with many twins over the years and thought deeply about what twin studies have taught us. ‘It’s very clear when you look at twins that much of what they share is hardwired,’ she says. ‘Many things about them are absolutely the same and unalterable. But it’s also clear, when you get to know them, that other things about them are different. Epigenetics is the origin of a lot of those differences, in my view.’Reed credits Thomas Bouchard’s work for today’s surge in twin studies. ‘He was the trailblazer,’ she says. ‘We forget that 50 years ago things like heart disease were thought to be caused entirely by lifestyle. Schizophrenia was thought to be due to poor mothering. Twin studies have allowed us to be more reflective about what people are actually born with and what’s caused byexperience.’Having said that, Reed adds, the latest work in epigenetics promises to take our understanding even further. ‘What I like to say is that nature writes some things in pencil and some things in pen,’ she says. Things written in pen you can’t change. That’s DNA. But things written in pencil you can. That’s epigenetics. Now that we’re actually able to look at the DNA and see where the pencil writings are, it’s sort of a whole new world.’Questions 1-4Do the following statements agree with the information given in Reading Passage 1?In boxes 1-4 on your answer sheet, writeTRUE if the statement agrees with the informationFALSE if the statement contradicts the informationNOT GIVEN if there is no information on this1 There may be genetic causes for the differences in how young the skin of identical twins looks.2 Twins are at greater risk of developing certain illnesses than non-twins.3 Bouchard advertised in newspapers for twins who had been separated at birth.4 Epigenetic processes are different from both genetic and environmental processes.Questions 5-9Look at the following statements (Questions 5-9) and the list of researchers below.Match each statement with the correct researcher, A, B or C.Write the correct letter, A, B or C, in boxes 5-9 on your answer sheet.NB You may use any letter more than once.List of ResearchersA Francis GaltonB Thomas BouchardC Danielle Reed5 invented a term used to distinguish two factors affecting human characteristics6 expressed the view that the study of epigenetics will increase our knowledge7 developed a mathematical method of measuring genetic influences8 pioneered research into genetics using twins9 carried out research into twins who had lived apartQuestions 10-13Complete the summary using the list of words, A-F, below.Write the correct letter, A-F, in boxes 10-13 on your answer sheet.Epigenetic processesIn epigenetic processes, 10 __________ influence the activity of our genes, for example in creating our internal 11 __________ The study of epigenetic processes is uncovering a way in which our genes can be affected by our 12 __________ One example is that if a pregnant rat suffers stress, the new-born rat may later show problems in its 13 __________.A nurtureB organsC codeD chemicalsE environmentF behaviour/behaviorREADING PASSAGE 2You should spend about 20 minutes on Questions 14-26, which are based on Reading Passage 2 below.An Introduction to Film SoundThough we might think of film as an essentially visual experience, we really cannot afford to underestimate the importance of film sound. A meaningful sound track is often as complicated as the image on the screen, and is ultimately just as much the responsibility of the director. The entire sound track consists of three essential ingredients: the human voice, sound effects and music. These three tracks must be mixed and balanced so as to produce the necessary emphases which in turn create desired effects. Topics which essentially refer to the three previously mentioned tracks are discussed below. They include dialogue, synchronous and asynchronous sound effects, and music.Let us start with dialogue. As is the case with stage drama, dialogue serves to tell the story and expresses feelings and motivations of characters as well. Often with film characterization the audience perceives little or no difference between the character and the actor. Thus, for example, the actor Humphrey Bogart is the character Sam Spade; film personality and life personality seem to merge. Perhaps this is because the very texture of a performer’s voice supplies an eleme nt of character.When voice textures fit the performer’s physiognomy and gestures, a whole and very realistic persona emerges. The viewer sees not an actor working at his craft, but another human being struggling with life. It is interesting to note that how dialogue is used and the very amount of dialogue used varies widely among films. For example, in the highly successful science-fiction film 2001, little dialogue was evident, and most of it was banal and of little intrinsic interest. In this way the film-maker was able to portray what Thomas Sobochack and Vivian Sobochack call, in An Introduction to Film, the ‘inadequacy of human responseswhen compared with the magnificent technology created by man and the visual beauties of the universe’.The comedy Bringing Up Baby, on the other hand, presents practically non-stop dialogue delivered at breakneck speed. This use of dialogue underscores not only the dizzy quality of the character played by Katherine Hepburn, but also the absurdity of the film itself and thus its humor. The audience is bounced from gag to gag and conversation to conversation; there is no time for audience reflection. The audience is caught up in a whirlwind of activity in simply managing to follow the plot. This film presents pure escapism — largely due to its frenetic dialogue.Synchronous sound effects are those sounds which are synchronized or matched with what is viewed. For example, if the film portrays a character playing the piano, the sounds of the piano are projected. Synchronous sounds contribute to the realism of film and also help to create a particular atmosphere. For example, the ‘click’ of a door being opened may simply serve to convince the audience that the image portrayed is real, and the audience may only subconsciously note the expected sound. However, if the ‘click’ of an opening door is part of an ominous action such as a burglary, the sound mixer may call attention to the ‘click’ with an increase in volume; this helps to engage the audience in a moment of suspense.Asynchronous sound effects, on the other hand, are not matched with a visible source of the sound on screen. Such sounds are included so as to provide an appropriate emotional nuance, and they may also add to the realism of the film. For example, a film-maker might opt to include the background sound of an ambulance’s siren while the foreground sound and image portrays an arguing couple. The asynchronous ambulancesiren underscores the psychic injury incurred in the argument; at the same time the noise of the siren adds to the realism of the film by acknowledging the film’s city setting.We are probably all familiar with background music in films, which has become so ubiquitous as to be noticeable in its absence. We are aware that it is used to add emotion and rhythm. Usually not meant to be noticeable, it often provides a tone or an emotional attitude toward the story and/or the characters depicted. In addition, background music often foreshadows a change in mood. For example, dissonant music may be used in film to indicate an approaching (but not yet visible) menace or disaster.Background music may aid viewer understanding by linking scenes. For example, a particular musical theme associated with an individual character or situation may be repeated at various points in a film in order to remind the audience of salient motifs or ideas.Film sound comprises conventions and innovations. We have come to expect an acceleration of music during car chases and creaky doors in horror films. Yet, it is important to note as well that sound is often brilliantly conceived. The effects of sound are often largely subtle and often are noted by only our subconscious minds. We need to foster an awareness of film sound as well as film space so as to truly appreciate an art form that sprang to life during the twentieth century — the modern film.Questions 14-18Choose the correct letter, A, B, C or D.Write the correct letter in boxes 14-18 on your answer sheet.14 In the first paragraph, the writer makes a point thatA the director should plan the sound track at an early stage in filming.B it would be wrong to overlook the contribution of sound to the artistry of films.C the music industry can have a beneficial influence on sound in film.D it is important for those working on the sound in a film to have sole responsibility for it.15 One reason that the writer refers to Humphrey Bogart is to exemplifyA the importance of the actor and the character appearing to have similar personalities.B the audience’s wish that actors are visually appropriate for their roles.C the value of the actor having had similar feelings to the character.D the audience’s preference for dialogue to be as authentic as possible.16 In the third paragraph, the writer suggests thatA audiences are likely to be critical of film dialogue that does not reflect their own experience.B film dialogue that appears to be dull may have a specific purpose.C filmmakers vary considerably in the skill with which they handle dialogue.D the most successful films are those with dialogue of a high quality.17 What does the writer suggest about Bringing Up Baby?A The plot suffers from the filmmaker’s wish to focus on humorous dialogue.B The dialogue helps to make it one of the best comedy films ever produced.C There is a mismatch between the speed of the dialogue and the speed of actions.D The nature of the dialogue emphasises key elements of the film.18 The writer refers to the ‘click’ of a door to make the point that realistic soundsA are often used to give the audience a false impression of events in the film.B may be interpreted in different ways by different members of the audience.C may be modified in order to manipulate the audience’s response to the film.D tend to be more significant in films presenting realistic situations.Questions 19-23Do the following statements agree with the information given in Reading Passage 2?In boxes 19-23 on your answer sheet, writeTRUE if the statement agrees with the informationFALSE if the statement contradicts the informationNOT GIVEN if there is no information on this19 Audiences are likely to be surprised if a film lacks background music.20 Background music may anticipate a development in a film.21 Background music has more effect on some people than on others.22 Background music may help the audience to make certain connections within the film.23 Audiences tend to be aware of how the background music is affecting them.Questions 24-26Complete each sentence with the correct ending, A-E, below.Write the correct letter, A-E, in boxes 24-26 on your answer sheet.24 The audience’s response to different parts of a film can be controlled25 The feelings and motivations of characters become clear26 A character seems to be a real person rather than an actorA when the audience listens to the dialogue.B if the film reflects the audience’s own concerns.C if voice, sound and music are combined appropriately.D when the director is aware of how the audience will respond.E when the actor’s appearance, voice and moves are consistent with each other.READING PASSAGE 3You should spend about 20 minutes on Questions 27-40, which are based on Reading Passage 3 on the following pages.Questions 27-32Reading Passage 3 has six paragraphs, A-F.Choose the correct heading for paragraphs A-F from the list of headings below. Write the correct number, i-vii, in boxes 27-32 on your answer sheet.List of Headingsi Differences between languages highlight their impressivenessii The way in which a few sounds are organised to convey a huge range of meaningiii Why the sounds used in different languages are not identicaliv Apparently incompatible characteristics of languagev Even silence can be meaningfulvi Why language is the most important invention of allvii The universal ability to use language27 Paragraph A28 Paragraph B29 Paragraph C30 Paragraph D31 Paragraph E32 Paragraph F‘This Marvellous Invention’A Of all mankinds manifold creations, language must take pride of place. Other inventions — the wheel, agriculture, sliced bread — may have transformed our material existence, but the advent of language is what made us human. Compared to language, all other inventions pale in significance, since everything we have ever achieved depends on language and originates from it. Without language, we could never have embarked on our ascent to unparalleled power over all other animals, and even over nature itself.B But language is foremost not just because it came first. In its own right it is a tool of extraordinary sophistication, yet based on an idea of ingenious simplicity: ‘this marvellous invention of composing out of twenty-five or thirty sounds that infinite variety of expressions which, whilst having in themselves no likeness to what is in our mind, allow us to disclose to others its whole secret, and to make known to those who cannot penetrate it all that we imagine, and all the various stirrings of our soul’. This was how,in 1660, the renowned French grammarians of the Port-Royal abbey near Versailles distilled the essence of language, and no one since has celebrated more eloquently the magnitude of its achievement. Even so, there is just one flaw in all these hymns of praise, for the homage to languages unique accomplishment conceals a simple yet critical incongruity. Language is mankind’s greatest invention — except, of course, that it was never invented. This apparent paradox is at the core of our fascination with language, and it holds many of its secrets.C Language often seems so skillfully drafted that one can hardly imagine it as anything other than the perfected handiwork of a master craftsman. How else could this instrument make so much out of barely three dozen measly morsels of sound? In themselves, these configurations of mouth — p,f,b,v,t,d,k,g,sh,a,e and so on — amount to nothing more than a few haphazard spits and splutters, random noises with no meaning, no ability to express, no power to explain. But run them through the cogs and wheels of the language machine, let it arrange them in some very special orders, and there is nothing that these meaningless streams of air cannot do: from sighing the interminable boredom of existence to unravelling the fundamental order of the universe.D The most extraordinary thing about language, however, is that one doesn’t have to be a genius to set its wheels in motion. The language machine allows just about everybody — from pre-modern foragers in the subtropical savannah, to post-modern philosophers in the suburban sprawl — to tie these meaningless sounds together into an infinite variety of subtle senses, and all apparently without the slightest exertion. Yet it is precisely this deceptive ease which makes language a victim of its own success, since in everyday life its triumphs are usually taken for granted.The wheels of language run so smoothly that one rarely bothers to stop and think about all the resourcefulness and expertise that must have gone into making it tick. Language conceals art.E Often, it is only the estrangement of foreign tongues, with their many exotic and outlandish features, that brings home the wonder of languages design. One of the showiest stunts that some languages can pull off is an ability to build up words of breath-breaking length, and thus express in one word what English takes a whole sentence to say. The Turkish word ?ehirlili?tiremediklerimizdensiniz, to take one example, means nothing less than ‘you are one of those whom we cant turn into a town-dweller’. (In case you were wondering, this monstrosity really is one word, not merely many different words squashed together — most of its components cannot even stand up on their own.)F And if that sounds like some one-off freak, then consider Sumerian, the language spoken on the banks of the Euphrates some 5,000 years ago by the people who invented writing and thus enabled the documentation of history. A Sumerian word like munintuma’a (‘when he had made it suitable for her’) might seem rather trim compared to the Turkish colossus above. What is so impressive about it, however, is not its lengthiness but rather the reverse —the thrifty compactness of its construction. The word is made up of different slots, each corresponding to a particular portion of meaning. This sleek design allows single sounds to convey useful information, and in fact even the absence of a sound has been enlisted to express something specific. If you were to ask which bit in the Sumerian word corresponds to the pronoun ‘it’ in the English translation when he had made it suitable for her, then the answer would haveto be nothing. Mind you, a very particular kind of nothing: the nothing that stands in the empty slot in the middle. The technology is so fine-tuned then that even a non-sound, when carefully placed in a particular position, has been invested with a specific function. Who could possibly have come up with such a nifty contraption?Questions 33-36Complete the summary using the list of words, A-G, below.Write the correct letter, A-G, in boxes 33-36 on your answer sheet.The importance of languageThe wheel is one invention that has had a major impact on 33 __________ aspects of life, but no impact has been as 34 __________ as that of language. Language is very 35 __________, yet composed of just a small number of sounds. Language appears to be 36 __________ to use. However, its sophistication is often overlooked.A difficultB complexC originalD admiredE materialF easyG fundamentalQuestions 37-40Do the following statements agree with the views of the writer in Reading Passage 3?In boxes 37-40 on your answer sheet, writeYES if the statement agrees with the views of the writerNO if the statement contradicts the views of the writerNOT GIVEN if it is impossible to say what the writer thinks about this37 Human beings might have achieved their present position without language.38 The Port-Royal grammarians did justice to the nature of language.39 A complex idea can be explained more clearly in a sentence than in a single word.40 The Sumerians were responsible for starting the recording of events.剑桥雅思阅读11原文参考译文(test4)PASSAGE 1 参考译文：双胞胎研究对于全世界的生物医药学研究者来说，双胞胎提供了一个宝贵的机会以供他们探究基因和环境——也就是先天和后天一所产生的影响。

READING PASSAGE 3You should spend about 20 minutes on Questions 28-40 which are based on Reading Passage 3 on the following pages.Questions 28-31Reading Passage 3 has five sections A-E.Choose the correct heading for sections A and C-E from the list of headings below.Write the correct number i-viii in boxes 28-31 on your answer sheet.28 Section A29Section C30Section D31Section Eshould be allocated or apportioned, so that they are distributed in both the most just and mostemerged 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 ‘invisible hand’ of economic progress would provide.Section CHowever, 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 ifthey 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 DAlthough 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 States 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’, r ather than a ‘private good’ that one is expected to buy for oneself. As the 1976 declaration of the World Health Organization 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 EJust at the time when it became obvious that health-care resources1 Organisation for Economic Cooperation and Development2 Gross Domestic ProductQuestions 32-35Classify the following as first occurringA between 1945 and 1950B between 1950 and 1980C after 1980Write the correct letter A, B or C in boxes 32-35 on your answer sheet.32 the realization that the resources of the national health systems were limited33 a sharp rise in the cost of health-care34 a belief that all the health-care resources the community needed would be produced by economic growth35 an acceptance of the role of the state in guaranteeing the provision of health-careQuestions 36-40Do the following statements agree with views of the writer in Reading Passage 3?In boxes 36-40 on your answer sheet writeYES if the statement agree with the views of the writerNO if the statement contradicts the views of the writerNOT GIVEN if it impossible to say what the writer thinks about this 36Personal 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 change have had an impact on health-care costs in recent years.39OECD governments have consistently underestimated the level of health-care provision needed.40 In most economically developed countries the elderly will have to make special provision for their health-care in the future.。

剑桥雅思11雅思阅读Test4passage3原文+题目+答案解析剑11雅思阅读Test4passage3原文+题目+答案解析雅思给大家带来了剑11雅思阅读Test4passage3原文+题目+答案解析，更多真题解析，请点击：剑桥雅思11阅读解析剑11雅思阅读Test4解析：剑11雅思阅读Test4passage2原文+题目+答案解析剑11雅思阅读Test4passage1原文+题目+答案解析剑11雅思阅读Test4passage3原文A Of all mankinds manifold creations, language must take pride of place. Other inventions —the wheel, agriculture, sliced bread —may have transformed our material existence, but the advent of language is what made us human. Compared to language, all other inventions pale in significance, since everything we have ever achieved depends on language and originates from it. Without language, we could never have embarked on our ascent to unparalleled power over all other animals, and even over nature itself.B But language is foremost not just because it came first. In its own right it is a tool of extraordinary sophistication, yet based on an idea of ingenious simplicity: ‘this marvellous invention of composing out of twenty-five or thirty sounds that infinite variety of expressions which, whilst having in themselves no likeness to what is in our mind, allow us to disclose to others its whole secret, and to make known to those who cannot penetrate it all that we imagi ne, and all the various stirrings of our soul’. This was how, in 1660, the renowned French grammarians of the Port-Royal abbey near Versailles distilled the essence of language, and no one since has celebrated more eloquently the magnitude of its achievement. Even so, there is just one flaw in all these hymns ofpraise, for the homage to languages unique accomplishment conceals a simple yet critical incongruity. Language is mankind’s greatest invention — except, of course, that it was never invented. This apparent paradox is at the core of our fascination with language, and it holds many of its secrets.C Language often seems so skillfully drafted that one can hardly imagine it as anything other than the perfected handiwork of a master craftsman. How else could this instrument make so much out of barely three dozen measly morsels of sound? In themselves, these configurations of mouth — p,f,b,v,t,d,k,g,sh,a,e and so on — amount to nothing more than a few haphazard spits and splutters, random noises with no meaning, no ability to express, no power to explain. But run them through the cogs and wheels of the language machine, let it arrange them in some very special orders, and there is nothing that these meaningless streams of air cannot do: from sighing the interminable boredom of existence to unravelling the fundamental order of the universe.D The most extraordinary thing about language, however, is that one doesn’t have to be a genius to set its wheels in motion. The language machine allows just abouteverybody — from pre-modern foragers in the subtropical savannah, to post-modern philosophers in the suburban sprawl —to tie these meaningless sounds together into an infinite variety of subtle senses, and all apparently without the slightest exertion. Yet it is precisely this deceptive ease which makes language a victim of its own success, since in everyday life its triumphs are usually taken for granted. The wheels of language run so smoothly that one rarely bothers to stop and think about all the resourcefulness and expertise that must have gone into making it tick. Language conceals art.E Often, it is only the estrangement of foreign tongues, with their many exotic and outlandish features, that brings home the wonder of languages design. One of the showiest stunts that some languages can pull off is an ability to build up words of breath-breaking length, and thus express in one word what English takes a whole sentence to say. The Turkish word ?ehirlili?tiremediklerimizdensiniz, to take one example, means nothin g less than ‘you are one of those whom we cant turn into a town-dweller’. (In case you were wondering, this monstrosity really is one word, not merely many different words squashed together — most of its components cannot even stand up on their own.)F And if that sounds like some one-off freak, then consider Sumerian, the language spoken on the banks of the Euphrates some 5,000 years ago by the people who invented writing and thus enabled the documentation of history. A Sumerian word like munintuma’a (‘when he had made it suitable for her’) might seem rather trim compared to the Turkish colossus above. What is so impressive about it, however, is not its lengthiness but rather the reverse —the thrifty compactness of its construction. The word is made up of different slots, each corresponding to a particular portion of meaning. This sleek design allows single sounds to convey useful information, and in fact even the absence of a sound has been enlisted to express something specific. If you were to ask which bit in the Sumerian word corresponds to the pronoun ‘it’ in the English translation when he had made it suitable for her, then the answer would have to be nothing. Mind you, a very particular kind of nothing: the nothing that stands in the empty slot in the middle. The technology is so fine-tuned then that even a non-sound, whencarefully placed in a particular position, has been invested with a specific function. Who could possibly have come up with such a nifty contraption?剑11雅思阅读Test4passage3题目：You should spend about 20 minutes on Questions 27-40, which are based on Reading Passage 3 on the following pages.Questions 27-32Reading Passage 3 has six paragraphs, A-F.Choose the correct heading for paragraphs A-F from the list of headings below. Write the correct number, i-vii, in boxes 27-32 on your answer sheet.List of Headings。

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剑桥雅思阅读11原文(test3)READING PASSAGE 1You should spend about 20 minutes on Questions 1-13, which are based on Reading Passage 1 below.THE STORY OF SILKThe history of the world’s most luxurious fabric, from ancient China to the present daySilk is a fine, smooth material produced from the cocoons —soft protective shells —that are made by mulberry silkworms (insect larvae). Legend has it that it was Lei Tzu, wife of the Yellow Emperor, ruler of China in about 3000 BC, who discovered silkworms. One account of the story goes that as she was taking a walk in her husband’s gardens, she discovered that silkworms were responsible for the destruction of several mulberry trees. She collected a number of cocoons and sat down to have a rest. It just so happened that while she was sipping some tea, one of the cocoons that she had collected landed in the hot tea and started to unravel into a fine thread. Lei Tzu found that she could wind this thread around her fingers. Subsequently, she persuaded her husband to allow her to rear silkworms on a grove of mulberry trees. She also devised a special reel to draw the fibres from the cocoon into a single thread so that they would be strong enough to be woven into fabric. While it is unknown just how much of this is true, it is certainly known that silk cultivationhas existed in China for several millennia.Originally, silkworm farming was solely restricted to women, and it was they who were responsible for the growing, harvesting and weaving. Silk quickly grew into a symbol of status, and originally, only royalty were entitled to have clothes made of silk. The rules were gradually relaxed over the years until finally during the Qing Dynasty (1644-1911 AD), even peasants, the lowest caste, were also entitled to wear silk. Sometime during the Han Dynasty (206 BC-220 AD), silk was so prized that it was also used as a unit of currency. Government officials were paid their salary in silk, and farmers paid their taxes in grain and silk. Silk was also used as diplomatic gifts by the emperor. Fishing lines, bowstrings, musical instruments and paper were all made using silk. The earliest indication of silk paper being used was discovered in the tomb of a noble who is estimated to have died around 168 AD.Demand for this exotic fabric eventually created the lucrative trade route now known as the Silk Road, taking silk westward and bringing gold, silver and wool to the East. It was named the Silk Road after its most precious commodity, which was considered to be worth more than gold. The Silk Road stretched over 6,000 kilometres from Eastern China to the Mediterranean Sea, following the Great Wall of China, climbing the Pamir mountain range, crossing modern-day Afghanistan and going on to the Middle East, with a major trading market in Damascus. From there, the merchandise was shipped across the Mediterranean Sea. Few merchants travelled the entire route; goods were handled mostly by a series of middlemen.With the mulberry silkworm being native to China, the country was the world’s sole producer of silk for many hundreds of years. The secret of silk-making eventually reached the rest ofthe world via the Byzantine Empire, which ruled over the Mediterranean region of southern Europe, North Africa and the Middle East during the period 330-1453 AD. According to another legend, monks working for the Byzantine emperor Justinian smuggled silkworm eggs to Constantinople (Istanbul in modern-day Turkey) in 550 AD, concealed inside hollow bamboo walking canes. The Byzantines were as secretive as the Chinese, however, and for many centuries the weaving and trading of silk fabric was a strict imperial monopoly. Then in the seventh century, the Arabs conquered Persia, capturing their magnificent silks in the process. Silk production thus spread through Africa, Sicily and Spain as the Arabs swept through these lands. Andalusia in southern Spain was Europe’s main silk-producing centre in the tenth century. By the thirteenth century, however, Italy had become Europe’s leader in silk production and export. Venetian merchants traded extensively in silk and encouraged silk growers to settle in Italy. Even now, silk processed in the province of Como in northern Italy enjoys an esteemed reputation.The nineteenth century and industrialisation saw the downfall of the European silk industry. Cheaper Japanese silk, trade in which was greatly facilitated by the opening of the Suez Canal, was one of the many factors driving the trend. Then in the twentieth century, new manmade fibres, such as nylon, started to be used in what had traditionally been silk products, such as stockings and parachutes. The two world wars, which interrupted the supply of raw material from Japan, also stifled the European silk industry. After the Second World War, Japan’s silk production was restored, with improved production and quality of raw silk. Japan was to remain the world’s biggest producer of raw silk, and practically the only major exporter of raw silk, untilthe 1970s. However, in more recent decades, China has gradually recaptured its position as the world’s biggest producer and exporter of raw silk and silk yarn. Today, around 125,000 metric tons of silk are produced in the world, and almost two thirds of that production takes place in China.Questions 1-9Complete the notes below.Choose ONE WORD ONLY from the passage for each answer.Write your answers in boxes 1-9 on your answer sheet.THE STORY OF SILKEarly silk production in ChinaAround 3000 BC, according to legend:- silkworm cocoon fell into emperor’s wife’s 1 __________- emperor’s wife invented a 2 __________ to pull out silk fibresOnly 3 __________ were allowed to produce silkOnly 4 __________ were allowed to wear silkSilk used as a form of 5 __________- e.g. farmers’ taxes consisted partly of silkSilk used for many purposes- e.g. evidence found of 6 __________ made from silk around 168 ADSilk reaches rest of worldMerchants use Silk Road to take silk westward and bring back 7 __________ and precious metals550 AD: 8 __________ hide silkworm eggs in canes and take them to ConstantinopleSilk production spreads across Middle East and Europe20th century: 9 __________ and other manmade fibres cause decline in silk productionQuestions 10-13Do the following statements agree with the information in Reading Passage 1?In boxes 10-13 on your answer sheet, writeTRUE if the statement agrees with the informationFALSE if the statement contradicts the informationNOT GIVEN if there is no information on this10 Gold was the most valuable material transported along the Silk Road.11 Most tradesmen only went along certain sections of the Silk Road.12 The Byzantines spread the practice of silk production across the West.13 Silk yarn makes up the majority of silk currently exported from China.READING PASSAGE 2You should spend about 20 minutes on Questions 14-26, which are based on Reading Passage 2 below.Great MigrationsAnimal migration, however it is defined, is far more than just the movement of animals. It can loosely be described as travel that takes place at regular intervals ?— often in an annual cycle — that may involve many members of a species, and is rewarded only after a long journey. It suggests inherited instinct. The biologist Hugh Dingle has identified five characteristics that apply, in varying degrees and combinations, to all migrations. They are prolonged movements that carry animals outside familiar habitats; they tend to be linear, not zigzaggy; they involve special behaviours concerning preparation (such as overfeeding) and arrival; they demand special allocations of energy. And onemore: migrating animals maintain an intense attentiveness to the greater mission, which keeps them undistracted by temptations and undeterred by challenges that would turn other animals aside.An arctic tern, on its 20,000 km flight from the extreme south of South America to the Arctic circle, will take no notice of a nice smelly herring offered from a bird-watcher’s boat along the way. While local gulls will dive voraciously for such handouts, the tern flies on. Why? The arctic tern resists distraction because it is driven at that moment by an instinctive sense of something we humans find admirable: larger purpose. In other words, it is determined to reach its destination. The bird senses that it can eat, rest and mate later. Right now it is totally focused on the journey; its undivided intent is arrival.Reaching some gravelly coastline in the Arctic, upon which other arctic terns have converged, will serve its larger purpose as shaped by evolution: finding a place, a time, and a set of circumstances in which it can successfully hatch and rear offspring.But migration is a complex issue, and biologists define it differently, depending in part on what sorts of animals they study. Joe! Berger, of the University of Montana, who works on the American pronghorn and other large terrestrial mammals, prefers what he calls a simple, practical definition suited to his beasts: ‘movements from a seasonal home area away to another home area and back again’. Generally the reason for such seasonal back-and-forth movement is to seek resources that aren’t available within a single area year-round.But daily vertical movements by zooplankton in the ocean —upward by night to seek food, downward by day to escapepredators —can also be considered migration. So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.Dingle is an evolutionary biologist who studies insects. His definition is more intricate than Berger’s, citing those five features that distinguish migration from other forms of movement. They allow for the fact that, for example, aphids will become sensitive to blue light (from the sky) when it’s time for takeoff on their big journey, and sensitive to yellow light (reflected from tender young leaves) when it’s appropriate to land. Birds will fatten themselves with heavy feeding in advance of a long migrational flight. The value of his definition, Dingle argues, is that it focuses attention on what the phenomenon of wildebeest migration shares with the phenomenon of the aphids, and therefore helps guide researchers towards understanding how evolution has produced them all.Human behaviour, however, is having a detrimental impact on animal migration. The pronghorn, which resembles an antelope, though they are unrelated, is the fastest land mammal of the New World. One population, which spends the summer in the mountainous Grand Teton National Park of the western USA, follows a narrow route from its summer range in the mountains, across a river, and down onto the plains. Here they wait out the frozen months, feeding mainly on sagebrush blown clear of snow. These pronghorn are notable for the invariance of their migration route and the severity of its constriction at three bottlenecks. If they can’t pass through each of the three during their spring migration, they can’t reach their bounty of summer grazing; if they can’t pass through again in autumn, escaping south ontothose windblown plains, they are likely to die trying to overwinter in the deep snow. Pronghorn, dependent on distance vision and speed to keep safe from predators, traverse high, open shoulders of land, where they can see and run. At one of the bottlenecks, forested hills rise to form a V, leaving a corridor of open ground only about 150 metres wide, filled with private homes. Increasing development is leading toward a crisis for the pronghorn, threatening to choke off their passageway.Conservation scientists, along with some biologists and land managers within the USA’s National Park Service and other agencies, are now working to preserve migrational behaviours, not just species and habitats. A National Forest has recognised the path of the pronghorn, much of which passes across its land, as a protected migration corridor. But neither the Forest Service nor the Park Service can control what happens on private land at a bottleneck. And with certain other migrating species, the challenge is complicated further —by vastly greater distances traversed, more jurisdictions, more borders, more dangers along the way. We will require wisdom and resoluteness to ensure that migrating species can continue their journeying a while longer.Questions 14-18Do the following statements agree with the information given in Reading Passage 2?In boxes 14-18 on your answer sheet, writeTRUE if the statement agrees with the informationFALSE if the statement contradicts the informationNOT GIVEN if there is no information on this14 Local gulls and migrating arctic terns behave in the same way when offered food.15 Experts’ definitions of migration tend to vary accordingto their area of study.16 Very few experts agree that the movement of aphids can be considered migration.17 Aphids’ journeys are affected b y changes in the light that they perceive.18 Dingle’s aim is to distinguish between the migratory behaviours of different species.Questions 19-22Complete each sentence with the correct ending, A-G, below.Write the correct letter, A-G, in boxes 19-22 on your answer sheet.19 According to Dingle, migratory routes are likely to20 To prepare for migration, animals are likely to21 During migration, animals are unlikely to22 Arctic terns illustrate migrating animals’ ability toA be discouraged by difficulties.B travel on open land where they can look out for predators.C eat more than they need for immediate purposes.D be repeated daily.E ignore distractions.F be governed by the availability of water.G follow a straight line.Questions 23-26Complete the summary below.Choose ONE WORD ONLY from the passage for each answer.Write your answers in boxes 23-26 on your answer sheet.The migration of pronghornsPronghorns rely on their eyesight and 23 __________ to avoid predators. One particular pop ulation’s summer habitat is a national park, and their winter home is on the 24 __________,where they go to avoid the danger presented by the snow at that time of year. However, their route between these two areas contains three 25 __________. One problem is the construction of new homes in a narrow 26 __________ of land on the pronghorns’ route.READING PASSAGE 3You should spend about 20 minutes on Questions 27-40, which are based on Reading Passage 3 below.Preface to ‘How the other half thinks: Adventu res in mathematical reasoning’A Occasionally, in some difficult musical compositions, there are beautiful, but easy parts — parts so simple a beginner could play them. So it is with mathematics as well. There are some discoveries in advanced mathematics that do not depend on specialized knowledge, not even on algebra, geometry, or trigonometry. Instead they may involve, at most, a little arithmetic, such as ‘the sum of two odd numbers is even’, and common sense. Each of the eight chapters in this book illustrates this phenomenon. Anyone can understand every step in the reasoning.The thinking in each chapter uses at most only elementary arithmetic, and sometimes not even that. Thus all readers will have the chance to participate in a mathematical experience, to appreciate the beauty of mathematics, and to become familiar with its logical, yet intuitive, style of thinking.B One of my purposes in writing this book is to give readers who haven’t had the opportunity to see and enjoy real mathematics the chance to appreciate the mathematical way of thinking. I want to reveal not only some of the fascinating discoveries, but, more importantly, the reasoning behind them.In that respect, this book differs from most books on mathematics written for the general public. Some present the lives of colorful mathematicians. Others describe important applications of mathematics. Yet others go into mathematical procedures, but assume that the reader is adept in using algebra.C I hope this book will help bridge that notorious gap that separates the two cultures: the humanities and the sciences, or should I say the right brain (intuitive) and the left brain (analytical, numerical). As the chapters will illustrate, mathematics is not restricted to the analytical and numerical; intuition plays a significant role. The alleged gap can be narrowed or completely overcome by anyone, in part because each of us is far from using the full capacity of either side of the brain. To illustrate our human potential, I cite a structural engineer who is an artist, an electrical engineer who is an opera singer, an opera singer who published mathematical research, and a mathematician who publishes short stories.D Other scientists have written books to explain their fields to non-scientists, but have necessarily had to omit the mathematics, although it provides the foundation of their theories. The reader must remain a tantalized spectator rather than an involved participant, since the appropriate language for describing the details in much of science is mathematics, whether the subject is expanding universe, subatomic particles, or chromosomes. Though the broad outline of a scientific theory can be sketched intuitively, when a part of the physical universe is finally understood, its description often looks like a page in a mathematics text.E Still, the non-mathematical reader can go far in understanding mathematical reasoning. This book presents thedetails that illustrate the mathematical style of thinking, which involves sustained, step-by-step analysis, experiments, and insights. You will turn these pages much more slowly than when reading a novel or a newspaper. It may help to have a pencil and paper ready to check claims and carry out experiments.F As I wrote, I kept in mind two types of readers: those who enjoyed mathematics until they were turned off by an unpleasant episode, usually around fifth grade, and mathematics aficionados, who will find much that is new throughout the book.This book also serves readers who simply want to sharpen their analytical skills. Many careers, such as law and medicine, require extended, precise analysis. Each chapter offers practice in following a sustained and closely argued line of thought. That mathematics can develop this skill is shown by these two testimonials:G A physician wrote, ‘The discipline of analytical thought processes [in mathematics] prepared me extremely well for medical school. In medicine one is faced with a problem which must be thoroughly analyzed before a solution can be found. The proces s is similar to doing mathematics.’A lawyer made the same point, ‘Although I had no background in law — not even one political science course — I did well at one of the best law schools. I attribute much of my success there to having learned, through the study of mathematics, and, in particular, theorems, how to analyze complicated principles. Lawyers who have studied mathematics can master the legal principles in a way that most others cannot.’I hope you will share my delight in watching as simple, even na?ve, questions lead to remarkable solutions and purely theoretical discoveries find unanticipated applications.Questions 27-34Reading Passage 3 has seven sections, A-G.Which section contains the following information?Write the correct letter, A-G, in boxes 27-34 on your answer sheet.NB You may use any letter more than once.27 a reference to books that assume a lack of mathematical knowledge28 the way in which this is not a typical book about mathematics29 personal examples of being helped by mathematics30 examples of people who each had abilities that seemed incompatible31 mention of different focuses of books about mathematics32 a contrast between reading this book and reading other kinds of publication33 a claim that the whole of the book is accessible to everybody34 a reference to different categories of intended readers of this bookQuestions 35-40Complete the sentences below.Choose ONE WORD ONLY from the passage for each answer.Write your answers in boxes 35-40 on your answer sheet.35 Some areas of both music and mathematics are suitable for someone who is a __________.36 It is sometimes possible to understand advanced mathematics using no more than a limited knowledge of __________.37 The writer intends to show that mathematics requires__________ thinking, as well as analytical skills.38 Some books written by __________ have had to leave out the mathematics that is central to their theories.39 The writer advises non-mathematical readers to perform __________ while reading the book.40 A lawyer found that studying __________ helped even more than other areas of mathematics in the study of law.剑桥雅思阅读11原文参考译文(test3)PASSAGE 1 参考译文：丝绸的故事世上最昂贵奢华织物的历史，从古代中国直到今天丝绸是种细软、光滑的布料，产自桑蚕(该昆虫的幼体形态)制作出的蚕茧——即其柔软的保护性外壳。

剑桥11阅读答案【篇一：剑桥11 text 1 听力原文及翻译】=txt>section 1hello?你好？oh, hello. i wanted to enquire about hiring a room in the village hall, for the evening of september 1st.您好，我想问一下租用村务大厅的一间公共会议室的事宜，九月一日晚上要用。

let me just see. . . yes, we have both rooms available that evening.我看看......那天晚上我们的两个会议室都可以用。

theres our main hall-thats got seating for 200 people. or theres the charlton room. . .一个是主厅，里面可容纳200个人。

另一间是charlton会议室...... the main hall seats 200, so 200 has been written in the space.主厅可容纳200个人，所以空白处应该填写200。

now we shall begin. you should answer the questions as you listen because you will not hear the recording a second time. listen carefully and answer questions 1 to 6.现在考试正式开始。

你需要在听的过程中回答问题，因为录音只播放一次。

请仔细听并回答问题1-6。

hello?你好？oh, hello. i wanted to enquire about hiring a room in the village hall, for the evening of september the first.您好，我想问一下租用村务大厅的一间公共会议室的事宜，九月一日晚上要用。

剑桥雅思阅读4原文翻译及答案解析(test3)为了帮助大家更好地备考雅思阅读，下面小编给大家分享剑桥雅思阅读4原文翻译及答案解析(test3)，希望对你们有用。

剑桥雅思阅读4原文(test3)READING PASSAGE 1You should spend about 20 minutes on Questions 1-13 which are based on Reading Passage 1 below.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’ve had business experience. Now I’m confident to expand what we’ve been doing. I’ve learnt cash management, and the way of keeping money so we save for re-investment. Now business is a part of our lives. As well, we didn’t know each other before —now we’ve made new friends.’Fan KaomaParticipants in the Youth Skills Enterprise Initiative Program, ZambiaIntroductionAlthough 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.) hasbeen 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.BackgroundTypically, 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 trading. Some may also earn income through begging, or through theft and other 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 PartnershipsS.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, whichthey 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 safe 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 learnedThe 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 exist. 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 assetssuch 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$30-$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).ConclusionThere is a need to recognise the importance of access to credit for impoverished young people seeking to fulfil 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 life skills as well as productive businesses.Questions 1-4Choose 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 articleA 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 toA draw the attention of governments to the problem of street children.B provide school 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 unemploymentB warC povertyD crime4 In order to become more independent, street children mayA reject paid employment.B leave their families.C set up their own businesses.D employ other children.Questions 5-8Complete the table below.Choose NO MORE THAN THREE WORDS from Reading Passage 1 for each answer.Write your answers in boxes 5-8 on your answer sheet.Country Organisations Involved Type of Project Support Provided5………………and………………S.K.I courier service ? provision of 6………………………Dominican Republic ? S.K.IY.W.C.A 7………………… ? loansstorage facilitiessavings plansZambia ? S.K.I.The Red CrossY.W.C.A. setting up small businesses ? business training8…………trainingaccess to creditQuestions 9-12Do the following statements agree with the claims of the writer in Reading Passage 1?In boxes 9-12 on your answer sheet writeYES if the statement agrees with the claims of the wirterNO if the statement contradicts the claims of the writerNOT GIVEN if it is impossible to say what the writer thinks about this9 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 13Choose 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 childrenA 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.READING PASSAGE 2You should spend about 20 minutes on Questions 14-26 which are based on Reading Passage 2 on the following pages.Questions 14-27Reading Passage 2 has four sections A-D.Choose the correct heading for each section from the list of headings below.Write the correct number i-vi in boxes 14-17 on your answer sheet.List of HeadingsI Causes of volcanic eruptionIi Efforts to predict volcanic eruptionIii Volcanoes and the features of our planetIv Different types of volcanic eruptionV International relief effortsVi The unpredictability of volcanic eruptions14 Section A15 Section B16 Section C17 Section DVolcanoes-earth-shattering newsWhen Mount Pinatubo suddenly erupted on 9 June 1991, the power of volcanoes past and present again hit the headlinesA 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. Vulcanism, 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 abasement 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 archipelago 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. Thesefracture 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 1,350℃, 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 no rthern 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, vulcanologists 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 t he Giant’s Causeway in Northern Ireland? It was a slow, gentle eruption.The biggest eruptions 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’ wh ere there have been 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 Mon t 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, cancelling the following summer in Europe and North America. Thousands starved as the harvests failed, after snow in June and frosts in August. Volcanoes are potentially world news, especially the quiet ones.Questions 18-21Answer 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 22-26Complete 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 sheet.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 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.READING PASSAGE 3You should spend about 20 minutes on Questions 27-40 which are based on Reading Passage 3 belowObtaining Linguistic DataA Many procedures are available for obtaining data about alanguage. 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 judgements 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 lin guist’s personal judgements are often uncertain, or disagree with the judgements 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 languages have 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 larger studies, scrupulous attention has been paid to the sampling theory employed, and in all cases, decisions have to be made about thebest 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 li stened 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 minimise 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 behaviour 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, inwhich they systematically ask their informants for utterances that describe certain actions, objects or behaviours. 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 a 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 for 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 supplementedby data derived from the intuitions of native speakers of the language, through either introspection or experimentation.Questions 27-31Reading 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 talk28 the importance of taking notes on body language29 the fact that language is influenced by social situation30 how informants can be helped to be less self-conscious31 various methods that can be used to generate specific dataQuestions 32-36Complete the table below.Choose NO MORE THAN 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 DISADVANTAGES32……as informant convenient method of enquiry not objective enoughNon-linguist as informant necessary with 33…… and child speech the number of factors to be consideredRecording an informant allows linguists’ claims to be checked 34……of soundVideoing an informant allows speakers’ 35…… to be observed 36……might mi ss certain thingsQuestions 37-40Complete the summary of paragraph G below.Choose NO MORE THAN THREE WORDS from the passage for each answer.Write your answers in boxes 37-40 on your answer sheet.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.剑桥雅思阅读4原文参考译文(test3)Passage1参考译文Micro-Enterprise Credit for Street Youth流浪儿童的小型企业贷款‘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“我来自一个贫困的大家庭。

本篇文章雅思培训班继续给大家分享：剑11雅思阅读Test4Passage3参考译文-美妙的发明。

相应的解析，请点击：剑11雅思阅读Test4passage3原文+题目+答案解析。

想要获取真题的同学，请戳：。

剑11雅思阅读Test4Passage3参考译文-美妙的发明A 在人类所有各种各样的创造品中，语言必定占有最重要的地位。

其他发明——车轮、农耕、切片面包——也许彻底改变了我们的物质生活，但语言的进步才是真正使得我们称其为人的关键所在。

与语言相比，所有其他发明在重要性上都会黯然失色，因为我们所取得的一切成就都有赖于语言并且源自于它。

如果没有语言，我们人类永远不可能登上凌驾所有其他动物、甚至驾驭大自然本身的高高位置。

B 但是语言之所以地位至高无上，并不仅仅因为它的先来先到。

就其本身而言它是一种极其精密复杂的工具，然而其基础理念却又简单纯粹得令人称奇：“这项奇妙的发明利用二十五或三十种发音组合出了那样无穷无尽的表达方式，这些发音自身虽然与我们心中所想并无相似之处，却使得我们可以借此向其他人展露出心中的全部秘密，令那些原本无法透视我们心灵的他人知晓我们全部的想象意念，以及我们灵魂中所有的震颤悸动。

”这就是在：1660年，位于凡尔赛附近Port-Royal修道院中那些著名的法语语法大师们所用来精炼地阐释语言精髓的措辞，自那以来再也没有其他人能用更加雄辩的方式来高度赞颂语言所取得成就的辉煌灿烂、举足轻重了。

即便如此，在所有这些赞颂之词中还是存在着一个问题，因为对于语言之独一无二成就的敬辞掩盖了一个简单却又至关重要的不一致性。

语言是人类最伟大的发明——只除了，当然了，它根本不是被发明的。

这种显而易见的悖论正是我们惊叹着迷于语言的核心原因，它包含着语言自身的许多秘密。

C 语言通常看起来如此匠心机巧、精密完善，除了将它视作某个天才大师的完美设计之外简直无法再做他想。

如若不然，这个工具是如何能用捉襟见肘的二三十个细碎音素拼凑出如此丰富意义的?如果单凭它们自己，这些不同口部形状所发出来的声音——p, f, b, v, t, d, k, g, sh, a, e等等——只不过是些随意的吞吐之声，没有任何含义的偶然声响，没有能力表达思想，没有力量解释说明。

雅思真题阅读词汇剑桥雅思11 test 4 passage 2 电影声音film sound今天我们雅思真题阅读词汇的文章来研究下剑桥雅思11 test 4 passage 2。

这篇雅思阅读的主题为电影声音film sound。

文章内容包括：电影声音的作用和分类，对话在电影中的作用，不同风格电影所运用的对话风格，同步音效的功能，背景音乐的效用，关注电影音效可以更好地欣赏电影艺术等。

按照惯例，我们来总结下其中出现的雅思阅读常考词汇。

第一段essential adj. 核心的，至关重要的。

“虽然我们可能认为电影的核心是视觉体验，但我们不能低估声音的重要性”。

complicated adj. 复杂的。

“意义丰富的音轨经常与屏幕上的画面一样复杂”。

entire adj. 完整的，全部的。

“完整的音轨包含三个核心要素：人声、音效和音乐”。

emphasis n. 强调，重点。

“这三种音轨必须相互混合、平衡，以产生必要的重点”。

第二段motivation n. 动机。

“在舞台剧上，对话起到讲述故事，表达角色情感、动机的作用”。

personality n. 性格。

“电影中的性格和真实生活中的性格似乎合为一体”。

第三段gesture n. 手势。

“当声音要素适合表演者的外貌和手势，一种整体并且十分真实的假象油然而生”。

intrinsic adj. 内在的，本质的。

“例如，在十分成功的科幻电影2001中，很少有雅思明显的对话，大多数都是平淡无奇，没有什么内在的意义”。

第四段dizzy adj. 头晕目眩的。

“对话的使用不仅表现出角色令人头晕目眩的性格”。

plot n. 情节。

“观众被卷入连续不断的互动之中，尽力跟上情节的发展”。

第五段atmosphere n. 氛围。

“同步音效帮助体现电影的真实性并营造特定的氛围”。

convince v. 说服。

“门被打开的声响是为了说服观众电影中所刻画的画面是真实的”。

第六段injury n. 受伤。

READING PASSAGE 1文章结构体 主 裁 题 说明文 如何提高运动员的成绩段落概括 第一段 第二段 第三段 第四段 第五段 第六段 第七段 第八段 第九段 人类的运动成绩一直在不断提高。

基因对提高成绩的影响。

合理训练方法的重要性。

肌肉增强训练的简要介绍。

营养的重要性。

针对性训练的作用。

生物力学对运动成绩的影响。

运动员自身的创造性。

我们对运动的理解还很浅显。

本节考查词汇第一段 steady hurl massive endurance explosive marathon [ [ [ [ [ [ ] 第二段 performance genetics invoke [ [ [ ] ] ] n. n. v. 表现 基因学 调用，使用 ] ] ] ] ] adj. v. adj. n. adj. n. 稳定的 投掷 巨大的 耐力 爆发性的 马拉松adage appreciably complement[ [ ’ [] ] ] 第三段n. adv. v.谚语，格言 略微，一点点 补充，互补identify duplicate[ [] ] 第四段v. v.确认（身份） ，找出 复制sprinter devoted to interval brief[]n. v. n. adj.短跑运动员 致力于 间歇 短暂的，简洁的[ [ ]]第五段 nutrition deficiency injury [ [ [ ] 第六段 focused training apply [ [ ] 第七段 methodology digitize dimension take-off 第八段 [ [ [ ] ] ] n. v. n. n. 方法 把…数字化 维度 起飞，起跑 ] n. v. 针对性训练 应用 ] ] n. n. n. 营养 营养不良 受伤contradiction instantly dub flop unorthodox complex cushion pit foam[ [ [ [ [ [ [ [ [ ] ] 第九段 ] ] ] ] ] ]]n. adv. v. n. adj. adj. n. n. n.矛盾，抵触 立即 命名 跳跃 不正统的 复杂 垫子 坑 泡沫humble vexing issue mundane fundamental[ [ [ [ [ ]]v. adj. n. adj. adj.使相形见拙 令人惊讶的 问题 世俗的 基本的，基础的] ] ]考题精解Questions 1-6 『题型』T/F/NG 『解析』 1. 定位词/关键字 原文重现 第一段首句 Since the early years of the twentieth century, when the International Athletic Federation began keeping records,…. records/date from/ about 1900参考译文 题解 答案 2. 定位词/关键字 原文重现 题解 答案 3. 定位词/关键字 原文重现 参考译文 题解从国际运动联合会在二十世纪初开始记录运动成绩到现在…. 原文中，since 相当于题干中 date from，early twentieth century 相当于 about 1900， record 则在题干中原形重现。

【第一时间】《剑桥雅思真题11》之阅读分析从话题类型来说，根据统计可以看出，雅思阅读的考试话题一直广泛多样。

而题型则稳中有变。

以剑桥11的test 4为例。

出现的三篇文章分别是社会科学类，艺术类，还有语言类。

具体来说，从话题的难易程度来看，三篇文章基本是按照依次变难的顺序来排列。

而题型的分布，我们从上图中我们可以看出，在剑桥11中，判断题占据的题目个数，约为1/4的量。

从考查的频率来看，这和2015全年雅思考试中判断题的考察频次保持一致。

而其他题型的考查也主要是摘要填空，配对题和选择题。

所以同学们在准备考试的时候，还是应该将精力集中在常见题型上面。

同学们可以根据题型的难易，结合自己的目标分数做有针对性的练习。

目标分数5-5.5：夯实基础——填空题。

句子填空在雅思阅读中属于细节题，遵循顺序性的原则，是一种相对容易得分的题型。

句子填空题首先是判断定位词；然后解题前可以对所填答案做一个预判断——判断词性及题干的空格与前后文之间的逻辑关系即主谓关系、动宾关系、并列关系、举例关系、等义关系、偏正关系等；之后再在原文中找寻关键词，如果找不到，则应考虑对关键词做同义替换；最后根据关键词所在句或前后句及逻辑关系填写答案，同时注意答案为“原文原词”的原则及题干词汇数的要求。

以test1前三题为例：1.Some food plants, including____, are already grown indoors.这是一个被动语态，根据indoor farming的标题，定位到原文第二段，The concept of indoor farming is not new, sincehothouse production of tomatoes and other produce has been in vogue for sometime.结合意思，这个indoor farming的概念并不新颖，对应题目中的already,而production则变成了被动的grown,因此这个题目的答案为tomatoes.2. Vertical farms would be located in _____,meaningthat there would be less need to take them long distances to customers.根据关键词Vertical farms定位第二段右侧段第三行所在句。

带你突破剑11阅读test4解题思路分析写在前面：在雅思备考的过程中，遇到了任何瓶颈以及阅读方面的障碍，【Test 4】Passage One: Research using twins 题材：科技类Summary: 本文讲述了双胞胎作为研究对象, 为研究基因和后天对人类的不同影响提供重要依据。

高频词汇：biomedical adj. 生物医学的untangle vt. 清理；整顿；解开…纠结ailment n. 小病；不安heredity n. 遗传，遗传性pinpoint vt. 查明；精确地找到；准确描述adj. 精确的；详尽的fraternal adj. 兄弟般的；友好的epigenetic adj. 后生的；外成的；渐成说的segment vi.vt.分割n. 段；局部fetus n. 胎儿，胎rodent adj. 啮齿类的；咬的，嚼的；侵蚀性的n. [脊椎] 啮齿动物embryonic adj. [胚] 胚胎的；似胚胎的hardwired adj. 电路的Schizophrenia n. [内科] 精神分裂症重难点句：Alternatively, by comparing the experiences of identical twins with those of fraternal twins, who come from separate eggs and share on average half their DNA, researchers can quantify the extent to which our genes affect our lives.解析：这句话注意两个定语从句。

who come from…为非限定性定语从句修饰先行词fraternal twins；to which…为限定性定语从句修饰先行词extent。

参考翻译：另外，通过比拟同卵双胞胎和异卵双胞胎(他们来自别离的受精卵，平均分享一半DNA)的经验，研究人员可以量化我们的基因在多大程度上影响我们的生活。

上一篇雅思培训给大家带来了：剑11雅思阅读Test4passage2原文+题目+答案解析。

本片文章我们将分享剑桥雅思11Test3阅读Passage3答案解析。

部分考生在做完剑桥雅思系列资料后因为找不到答案解析而无法了解自己的做题情况，为了便于大家更好的进行分析，我们带来了答案解析哦！剑桥雅思11Test3阅读Passage3答案解析Question 27答案：D关键词：assume, lack of mathematical knowledge定位原文：D段第1句“Other scientists have written books to…”解题思路：题目：a reference to books that assume a lack of mathematical knowledge; 译文：提到了这样一些书，它们都设定其内容缺失数学专业知识。

books所进行的assume是针对书的读者而言，也就是说，它们假设的是“读者并不具有(或者说缺乏)特别深厚的数学知识”，但在英语地道表达中此句并不需要出现readers这个单词，需要考生自行领会。

回到原文中，have necessarily had to omit这个表达也清楚地表明这类书籍是“出于必要、不得不省略了”数学相关内容。

也就是说，这些书并不是故意对数学专业知识避而不谈，而是考虑到了读者群的具体情况而刻意避免了深入艰涩的数学内容。

Question 28：答案：B关键词：not a typical book定位原文： B部分第2段第1句“In that respect, this book differs from…”解题思路：题目：the way in which this is not a typical book about mathematics;译文：本书在何种意义上并非一本典型的数学题材相关书籍。

此题相対来说比较容易，只需考生看出not a typical book 与 differs from most books 的简单同义替换。

2022年11月4日雅思阅读机经真题答案及解析本文为大家汇总了网友版的2022年11月4日雅思索后回忆，并附上相关解析。

仅供参考。

一、考试概述：本次考试的文章两篇新题一篇旧题，第一篇描述了两个科学家在撒哈拉的发觉，讨论了古代人的生存方式，其次篇是讲了利专心理学对课堂行为进行讨论，第三篇是讲非语言沟通的，人类除了用语言沟通，其他手势、行为等的非语言形式也很重要二、详细题目分析Passage 1：题目：Human Remain in Green Sahara题型：推断题4 +简答题3+填空题6新旧程度：旧题文章大意：描述了两个科学家在撒哈拉的发觉，讨论古代人的生存方式。

参考文章：Human Remain in Green SaharaAOn October 13,2,000, a small team of paleontologists led by Paul Sereno of the University of Chicago clambered out of three battered Land Rovers, filled their water bottles, and scattered on foot across thetoffee-colored sands of the Tenere desert in northern Niger. The Tenere，on the southern flank of the Sahara, easily ranks among the most desolate landscapes on Earth. The Tuareg，turbaned nomads who for centuries have ruled this barren realm, refer to it as a “desert within a desert”a California-size ocean of sand and rock, where a single massive dune might stretch a hundred miles, and the combination of 120-degreeheat and inexorable winds can wick the water from a human body in less than a day. The harsh conditions, combined with intermittent conflict between the Tuareg and the Niger government, have kept the region largelyunexplored.BMike Hettwer, a photographer accompanying the team, headed off by himself toward a trio of small dunes. He crested the first slope and stared in amazement. The dunes were spilling over with bones. He took a few shots with his digital camera and hurried back to the Land Rovers. ‘I found some bones:'Hettwer said, when the team had regrouped. "But they're not dinosaurs. They're human."CIn the spring of 2022 Sereno contacted Elena Garcea, an archaeologist at the University of Cassino, in Italy, inviting her to accompany him on a return to the site. Garcea had spent three decades working digs along the Nile in Sudan and in the mountains of the Libyan Desert, and was well acquainted with the ancient peoples of the Sahara. But she had never heard of Paul Sereno. His claim to have found so many skeletons in one place seemed far fetched, given that no other Neolithic cemetery contained more than a dozen or so. Some archaeologists would later be skeptical; one sniped that he was just a ‘moonlighting paleontologist.’ But Garcea was too intrigued to dismiss him as an interloper. She agreed to join him.DGarcea explained that the Kiffian were a fishing-based culture and lived during the earliest wet period, between 8,000 and 10,000 years ago. She held a Kiffian sherd next to a Tenerian one. “What is so amazing is that the people who made these two pots lived more than a thousand years apart.EOver the next three weeks, Sereno and Garcea-- along with five American excavators, five Tuareg guides, and five soldiers from Niger's army, sent to protect the camp from bandits-- made a detailed map of the site, which they dubbed Gobero, after the Tuareg name for the area. They exhumed eight burials and collected scores of artifacts from both cultures. In a dry lake bed adjacent to the dunes, they found dozens of fishhooks and harpoons carved from animal bone. Apparently the Kiffian fishermenweren't just going after small fry: Scattered near the dunes were the remains of Nile perch, a beast of a fish that can weigh nearly 300 pounds, as well as crocodile and hippo bones.FSereno flew home with the most important skeletons and artifactsand immediately began planning for the next field season. In the meantime, he carefully removed one tooth from each of four skulls and sent them to a lab for radiocarbon dating. The results pegged the age ofthe tightly bundled burial sat roughly 9,000 years old, the heart of the Kiffian era. The smaller ‘sleeping’ skeletons turned out to be about 6,000 years old, well within the Tenerian period. At least now the scientists knew who was who.G In the fall of 2022 they returned to Gobero, accompanied by a larger dig crew and six additional scientists. Garcea hoped to excavate some80 burials, and the team began digging. As the skeletons began to emerge from the dunes, each presented a fresh riddle, especially the Tenerian. A male skeleton had been buried with a finger in his mouth.HEven at the site, Arizona State University bioarchaeologist Chris Stojanowski could begin to piece together some clues. Judging by the bones, the Kiffian appeared to be a peaceful, hardworking people. “The lack of head and forearm injuries suggests they weren't doing much fighting,” he told me. “And these guys were strong.” He pointed to a long，narrow ridge running along a femur. “That’s the muscle attachment，” he said. “This individual had huge leg muscles, which means he was eating a lot of protein and had a strenuous lifestyle-- both consistent with a fishing way of life.” For contrast, he showed me the femur of a Tenerian male. The ridge was barely perceptible. “This guy had a much less strenuous lifestyle,” he said, “which you might expect of a herder."IStojanowski's assessment that the Tenerian were herders fits the prevailing view among scholars of life in the Sahara 6,000 years ago, when drier conditions favored herding over hunting. But if the Tenerian were herders, Sereno pointed out, where were the herds? Among thehundreds of animal bones that had turned up at the site, none belonged to goats or sheep, and only three came from a cow species. “It’s not unusual for a herding culture not to slaughter their cattle, particularly in a cemetery，M Garcea responded, noting that even modem pastoralists, such as Niger’s Wodaabe, are loath to butcher even one animal in their herd. Perhaps, Sereno reasoned, the Tenerian at Gobero were a transitional group that had not fully adopted herding and still relied heavily on hunting and fishing.JBack in Arizona, Stojanowski continues to analyze the Gobero bones for clues to the Green Saharans’ health and diet. Other scientists are trying to derive DNA from the teeth, which could reveal the genetic origins of the Kiffian and Tenerian — and possibly link them to descendants living today. Sereno and Garcea estimate a hundred burials remain to be excavated. But as the harsh Tenere winds continue to erode the dunes, time is running out. “Every archaeological site has a life cycle，” Garcea said. “It begins when people begin to use the place, followed by disuse, then nature takes over, and finally it is gone. Gobero is at the end of its life.”文档内容到此结束，欢迎大家下载、修改、丰富并分享给更多有需要的人。

Begging by Nestlings雏鸟的乞食行为damaging. A classic example is noisy begging by nestling songbirds when a parent returns to the nest with food. These loud cheeps and peeps might give the location of the nest away to a listening hawk or raccoon, resulting in the death of the defenseless nestlings. In fact, when tapes of begging tree swallows were played at an artificial swallow nest containing an egg, the egg in that “noisy” nest was taken or destroyed by predators before the egg in a nearby quiet nest in 29 of 37 trials.一些动物发出的信号可能会给他们自身带来过份的伤害，一个典型的例子就是鸣禽的雏鸟在它们的父母带着食物归巢时吵闹的乞食行为。

这些叽叽喳喳的叫声有时会让巢外的老鹰和浣熊听到并且定位，从而致使毫无抵抗能力的雏鸟丧命。

事实上，一个蛋被放在一个假的树燕巢中且附近播放着树燕乞食叫声的录音带时，这个“嘈杂”的巢中的蛋在39 次试验中有27 次早于放在安静的巢中的蛋而被食肉动物带走或毁掉。

Further evidence for the costs of begging comes from a study of differences in the begging calls of warbler species that nest on the ground versus those that nest in the relative safety of trees. The young of ground-nesting warblers produce begging cheeps of higher frequencies than do their tree-nesting relatives. These higher-frequency sounds do not travel as far, and so may better conceal the individuals producing them, who are especially vulnerable to predators in their ground nests. Davida tape recorder that played the begging calls of either tree-nesting or of ground-nesting warblers. The eggs “advertised” by the tree-nesters' begging calls were found bitten significantly more often than the eggs associated with the ground-nesters' calls.乞食行为成本更进一步的证据来自与一项关于地面筑巢的黄莺与住在相对安全的树上的黄莺对比的研究。

剑桥雅思真题11阅读解析test3passage1⼀、原⽂翻译：丝绸的故事源于古中国的世界最奢侈的织物前世今⽣丝绸是⼀种上等的、光滑的，有桑蚕（幼⾍）产⽣的柔软的保护壳。

传说是3000年前中国的帝王黄帝的妻⼦嫘祖发现蚕⾍的。

⼀个故事的版本是当嫘祖在她丈夫的花园⾥散步的时候，她发现⼀些桑树毁坏的主要原因是蚕⾍。

她收集了⼏个蚕茧，然后坐下来休息。

正当她喝茶的时候，她所收集的⼀个蚕茧掉进了热茶⾥⾯然后被拆散成细线。

嫘祖发现她可以把这些线缠绕在⼿指上。

随后，她说服她的丈夫让她在桑树园⾥养蚕。

她也设计了⼀个特殊的轴来从蚕茧⾥抽丝组成⼀股线好让它韧性⾜够好到被编织成织物。

尽管我们不知道故事的真实性有多少，但我们确切知道的就是丝绸⽂化在中国已经存在⼏千年了。

最初，蚕⾍的养殖只限于⼥性，同时也是她们负责种植、收割和编织的任务。

丝绸迅速成为⼀种地位象征的符号，且最开始只有皇室才有权利穿丝绸制作的⾐服。

规则随着时间流逝逐渐放宽，到清朝（公元1644-1911年）时，即使是最低阶层的农民都可以穿丝绸。

在汉朝（公元前206-公元220年），丝绸因其备受珍视也被作为⼀种货币单位。

政府官员的薪⽔是丝绸，农民也⽤⾕物和丝绸来交税。

丝绸同样被⽤于皇帝的外交礼物：⽤丝绸制成的钓鱼线、⼸弦、乐器和纸。

最早关于丝绸纸使⽤的标志是在⼀个据估计死于公元164年的贵族的墓⾥被发现。

对这种异域风情织物的需求最终创造了获利的贸易路线，如今因丝绸之路⽽闻名，把丝绸带到西⽅，再把黄⾦、银器和⽺⽑带回东⽅。

它因其最珍贵的商品——丝绸被认为⽐⾦⼦更值钱，⽽被命名为丝绸之路。

丝绸之路延伸6000千⽶长，从中国东部到地中海，跟随着长城，跨过帕⽶尔⼭脊，穿过如今的阿富汗，深⼊到中东地区，在那⾥的⼤马⼠⾰有⼀个主要的贸易市场。

从这⾥，商品被船运过地中海。

仅有少数的商⼈⾛完了全程，货物⼤多要经过⼀系列的中间⼈过⼿。

因为桑树蚕⾍源于中国，⼏百年来这个国家也是世界上唯⼀的丝绸⽣产者。