搜档网
当前位置:搜档网 › 雅思之路阅读真题

雅思之路阅读真题

雅思之路阅读真题
雅思之路阅读真题

Candidate Number Candidate Name______________________________________________

INTERNATIONAL ENGLISH LANGUAGE TESTING SYSTEM

Academic Reading

PRACTICE TEST 2 1 hour

Time 1 hour

INSTRUCTIONS TO CANDIDATES

Do not open this question paper until you are told to do so.

Write your name and candidate number in the spaces at the top of this page. Read the instructions for each part of the paper carefully.

Answer all the questions.

Write your answers on the answer sheet. Use a pencil.

You must complete the answer sheet within the time limit.

At the end of the test, hand in both this question paper and your answer sheet.

INFORMATION FOR CANDIDATES

There are 40 questions on this question paper.

Each question carries one mark.

READING PASSAGE 1

You should spend about 20 minutes on Questions 1–13, which are based on Reading Passage 1 on the following pages.

Questions 1–7

Reading Passage 1 has seven paragraphs, A–G.

Choose the correct heading for each paragraph from the list of headings below. Write the correct number, i–x, in boxes 1–7 on your answer sheet.

List of Headings

i A unique sensory experience

ii Getting back to basics

iii The gift that keeps on giving

iv Variations in alcohol content

v Old methods of transportation

vi Culinary applications

vii Making kefir

viii A fortunate accident

ix Kefir gets an image makeover

x Ways to improve taste

1Section A

2Section B

3Section C

4Section D

5Section E

6Section F

7Section G

T he M AGIC o f K EFIR

A The shepherds of the North Caucasus region of Europe were only trying to transport milk the best way they knew how – in leather pouches strapped to the side of donkeys – when they made a significant discovery. A fermentation process would sometimes inadvertently occur en route, and when the pouches were opened up on arrival they would no longer contain milk but rather a pungent, effervescent, low-alcoholic substance instead. This unexpected development was a blessing in disguise. The new drink – which acquired the name kefir – turned out to be a health tonic, a naturally-preserved dairy product and a tasty addition to our culinary repertoire.

B Although their exact origin remains a mystery, we do know that yeast-based kefir grains have always been at the root of the kefir phenomenon. These grains are capable of a remarkable feat: in contradistinction to most other items you might find in a grocery store, they actually expand and propagate with use. This is because the grains, which are granular to the touch and bear a slight resemblance to cauliflower rosettes, house active cultures that feed on lactose when added to milk. Consequently, a bigger problem for most kefir drinkers is not where to source new kefir grains, but what to do with the ones they already have!

C The great thing about kefir is that it does not require a manufacturing line in order to be produced. Grains can be simply thrown in with a batch of milk for ripening to begin. The mixture then requires a cool, dark place to live and grow, with periodic unsettling to prevent clumping (Caucasus inhabitants began storing the concoction in animal-skin satchels on the back of doors – every time someone entered the room the mixture would get lightly shaken). After about 24 hours the yeast cultures in the grains have multiplied and devoured most of the milk sugars, and the final product is then ready for human consumption.

D Nothing compares to a person’s first encounter with kefir. The smooth, uniform consistency rolls over the tongue in a manner akin to liquefied yogurt. The sharp, tart pungency of unsweetened yogurt is there too, but there is also a slight hint of effervescence, something most users will have previously associated only with mineral waters, soda or beer. Kefir also comes with a subtle aroma of yeast, and depending on the type of milk and ripening conditions, ethanol content can reach up to two or three percent – about on par with a decent lager – although you can expect around 0.8 to one per cent for a typical day-old preparation. This can bring out a tiny edge of alcohol in the kefir’s flavour.

E Although it has prevailed largely as a fermented milk drink, over the years kefir has acquired a number of other uses. Many bakers use it instead of starter yeast in the preparation of sourdough, and the tangy flavour also makes kefir an ideal buttermilk substitute in pancakes. Kefir also accompanies sour cream as one of the main ingredients in cold beetroot soup and can be used in lieu of regular cow’s milk on granola or cereal. As a way to keep their digestive systems fine-tuned, athletes sometimes combine kefir with yoghurt in protein shakes.

F Associated for centuries with pictures of Slavic babushkas clutching a shawl in one hand and a cup of kefir in the other, the unassuming beverage has become a minor celebrity of the nascent health food movement in the contemporary West. Every day, more studies pour out supporting the benefits of a diet high in probiotics1. This trend toward consuming probiotics has engulfed the leisure classes in these countries to the point that it is poised to become, according to some commentators, “the next multivitamin”. These days the word kefir is consequently more likely to bring to mind glamorous, yoga mat-toting women from Los Angeles than austere visions of blustery Eastern Europe.

G Kefir’s rise in popularity has encouraged producers to take short cuts or alter the production process. Some home users have omitted the ripening and culturation process while commercial dealers often add thickeners, stabilisers and sweeteners.

1 Probiotic = substance containing beneficial and intestine-friendly microorganisms

But the beauty of kefir is that, at its healthiest and tastiest, it is a remarkably affordable, uncluttered process, as any accidental invention is bound to be. All that is necessary are some grains, milk and a little bit of patience. A return to the unadulterated kefir-making of old is in everyone’s interest.

Questions 8–11

Answer the questions below using NO MORE THAN TWO WORDS from the passage for each answer.

Write your answers in boxes 8–11 on your answer sheet.

8What do kefir grains look like?

9What needs to happen to kefir while it is ripening?

10What will the yeast cultures have consumed before kefir is ready to drink? 11The texture of kefir in the mouth is similar to what?

Questions 12 and 13

Choose TWO letters, A–E.

Write the correct letters in boxes 12 and 13 on your answer sheet.

Which TWO products are NOT mentioned as things which kefir can replace?

A Ordinary cow’s milk

B Buttermilk

C Sour cream

D Starter yeast

E Yoghurt

READING PASSAGE 2

You should spend about 20 minutes on Questions 14–26, which are based on Reading Passage 2 on the following pages.

Questions 14–21

Reading Passage 2 has nine paragraphs, A–I.

Choose the correct heading for paragraphs A–H from the list of headings below. Write the correct number, i–xi, in boxes 14–21 on your answer sheet.

List of Headings

i A historical delicacy

ii The poor may benefit

iii Presentation is key to changing attitudes

iv Environmentally friendly production

v Tradition meets technology

vi A cultural pioneer

vii Western practices harm locals

viii Good source of nutrients

ix Growing popularity

x A healthy choice

xi A safety risk

14Section A

15Section B

16Section C

17Section D

18Section E

19Section F

20Section G

21Section H

FOOD FOR THOUGHT

A Why not eat insects? So asked British entomologist Vincent M. Holt in the

title of his 1885 treatise on the benefits of what he named entomophagy – the consumption of insects (and similar creatures) as a food source. The prospect of eating dishes such as “wireworm sauce” and “slug soup” failed to garner favour amongst those in the stuffy, proper, Victorian social milieu of his time, however, and Holt’s visionary ideas were considered at best eccentric, at worst an offense to every refined palate. Anticipating such a reaction, Holt acknowledged the difficulty in unseating deep-rooted prejudices against insect cuisine, but quietly asserted his confidence that “we shall some day quite gladly cook and eat them”.

B It has taken nearly 150 years but an eclectic Western-driven movement has finally mounted around the entomophagic cause. In Los Angeles and other cosmopolitan Western cities, insects have been caught up in the endless pursuit of novel and authentic delicacies. “Eating grasshoppers is a thing you do here”, bug-supplier Bricia Lopez has explained. “There’s more of a ‘cool’ factor involved.” Meanwhile, the Food and Agricultural Organization has considered a policy paper on the subject, initiated farming projects in Laos, and set down plans for a world congress on insect farming in 2013.

C Eating insects is not a new phenomenon. In fact, insects and other such creatures are already eaten in 80 per cent of the world’s countries, prepared in customary dishes ranging from deep-fried tarantula in Cambodia to bowls of baby bees in China. With the specialist knowledge that Western companies and organisations can bring to the table, however, these hand-prepared delicacies have the potential to be produced on a scale large enough to lower costs and open up mass markets. A new American company, for example, is attempting to develop pressurisation machines that would de-shell insects and make them available in the form of cutlets. According to the entrepreneur behind the company, Matthew Krisiloff, this will be the key to pleasing the uninitiated palate.

D Insects certainly possess some key advantages over traditional Western meat sources. According to research findings from Professor Arnold van Huis, a Dutch entomologist, breeding insects results in far fewer noxious by-products. Insects produce less ammonia than pig and poultry farming, ten times less methane than livestock, and 300 times less nitrous oxide. Huis also notes that insects – being cold-blooded creatures – can convert food to protein at a rate far superior to that of cows, since the latter exhaust much of their energy just keeping themselves warm.

E Although insects are sometimes perceived by Westerners as unhygienic or disease-ridden, they are a reliable option in light of recent global epidemics (as Holt pointed out many years ago, insects are “decidedly more particular in their feeding than ourselves”). Because bugs are genetically distant from humans, species-hopping diseases such as swine flu or mad cow disease are much less likely to start or spread amongst grasshoppers or slugs than in poultry and cattle. Furthermore, the squalid, cramped quarters that encourage diseases to propagate among many animal populations are actually the residence of choice for insects, which thrive in such conditions.

F Then, of course, there are the commercial gains. As FAO Forestry Manager Patrick Durst notes, in developing countries many rural people and traditional forest dwellers have remarkable knowledge about managing insect populations to produce food. Until now, they have only used this knowledge to meet their own subsistence needs, but Durst believes that, with the adoption of modern technology and improved promotional methods, opportunities to expand the market to new consumers will flourish. This could provide a crucial step into the global economic arena for those primarily rural, impoverished populations who have been excluded from the rise of manufacturing and large-scale agriculture.

G Nevertheless, much stands in the way of the entomophagic movement. One problem is the damage that has been caused, and continues to be caused, by Western organisations prepared to kill off grasshoppers and locusts – complete food proteins – in favour of preserving the incomplete protein crops of millet, wheat, barley and maize. Entomologist Florence Dunkel has described the consequences of such interventions. While examining children’s diets as a part of her field work in Mali, Dunkel discovered that a protein deficiency syndrome called kwashiorkor was increasing in incidence. Children in the area were once protected against kwashiorkor by a diet high in grasshoppers, but these had become unsafe to eat after pesticide use in the area increased.

H A further issue is the persistent fear many Westerners still have about eating insects. “The problem is the ick factor—the eyes, the wings, the legs,” Krisiloff has said. “It’s not as simple as hiding it in a bug nugget. People won’t accept it beyond the novelty. When you think of a chicken, you think of a chicken breast, not the eyes, wings, and beak.” For Marcel Dicke, the key lies in camouflaging the fact that people are eating insects at all. Insect flour is one of his propositions, as is changing the language of insect cuisine. “If you say it’s mealworms, it makes people think of ringworm”, he notes. “So stop saying ‘worm’. If we use Latin names, say it’s a Tenebrio quiche, it sounds much more fancy”. For Krisiloff, Dicke and others, keeping quiet about the gritty reality of our food is often the best approach.

I It is yet to be seen if history will truly redeem Vincent Holt and his suggestion that British families should gather around their dining tables for a breakfast of “moths on toast”. It is clear, however, that entomophagy, far from being a kooky sideshow to the real business of food production, has much to offer in meeting the challenges that global societies in the 21st century will face.

Questions 22–26

Complete the notes below.

Choose NO MORE THAN THREE WORDS from the passage for each answer. Write your answers in boxes 22–26 on your answer sheet.

Van Huis

?Insects are cleaner & do not release as many harmful gases

?Insects use food intake economically in the production of protein as they waste less 22 …………………

Durst

?Traditional knowledge could be combined with modern methods for mass production instead of just covering 23 …………………

?This could help 24 ………………… people gain access to world markets.

Dunkel

?Due to increased 25 …………………, more children in Mali are suffering from

26 …………………

READING PASSAGE 3

You should spend about 20 minutes on Questions 27–40, which are based on Reading Passage 3 below.

Love stories

“Love stories” are often associated – at least in the popular imagination – with fairy tales, adolescent day dreams, Disney movies and other frivolous pastimes. For psychologists developing taxonomies2 of affection and attachment, however, this is an area of rigorous academic pursuit. Beginning in the early 1970s with the groundbreaking contributions of John Alan Lee, researchers have developed classifications that they believe better characterise our romantic predispositions. This involves examining not a single, universal, emotional expression (“love”), but rather a series of divergent behaviours and narratives that each has an individualised purpose, desired outcome and state of mind. Lee’s gritty methodology painstakingly involved participants matching 170 typical romantic encounters (e.g., “The night after I met X…”) with nearly 1500 possible reactions (“I could hardly get to sleep” or “I wrote X a letter”). The patterns unknowingly expressed by respondents culminated in a taxonomy of six distinct love “styles” that continue to inform research in the area forty years later.

The first of these styles – eros – is closely tied in with images of romantic love that are promulgated in Western popular culture. Characteristic of this style is a passionate emotional intensity, a strong physical magnetism – as if the two partners were literally being “pulled” together – and a sense of inevitability about the relationship. A related but more frantic style of love called mania involves an obsessive, compulsive attitude toward one’s partner. Vast swings in mood from ecstasy to agony – dependent on the level of attention a person is receiving from his or her partner – are typical of manic love.

Two styles were much more subdued, however. Storge is a quiet, companionate type of loving – “love by evolution” rather than “love by revolution”, according to some theorists. Relationships built on a foundation of platonic affection and caring are archetypal of storge. When care is extended to a sacrificial level of doting, however, it becomes another style – agape. In an agape relationship one partner becomes a “caretaker”, exalting the welfare of the other above his or her own needs.

The final two styles of love seem to lack aspects of emotion and reciprocity altogether. The ludus style envisions relationships primarily as a game in which it is best to “play the field” or experience a diverse set of partners over time. Mutually-gratifying outcomes in relationships are not considered necessary, and deception of a partner and lack of disclosure about one’s activities are also typical. While Lee found that college students in his study overwhelmingly disagreed with the tenets of this style, substantial numbers of them acted in a typically ludic style while dating, a finding that proves correct the deceit inherent in ludus. Pragma lovers also downplayed emotive aspects of relationships but favoured practical, sensible connections. Successful arranged marriages are a great example of pragma, in that the couple decide to make the relationship work; but anyone who seeks an ideal partner with a shopping list of necessary attributes (high salary, same religion, etc.) fits the classification.

2 Taxonomy = the science of classifying and categorising data.

Robert J. Sternberg’s contemporary research on love stories has elaborated on how these narratives determine the shape of our relationships and our lives. Sternberg and others have proposed and tested the theory of love as a story, “whereby the interaction of our personal attributes with the environment – which we in part create – leads to the development of stories about love that we then seek to fulfil, to the extent possible, in our lives.” Sternberg’s taxonomy of love stories numbers far more, at twenty-six, than Lee’s taxonomy of love styles, but as Sternberg himself admits there is plenty of overlap. The seventh story, Game, coincides with ludus, for example, while the nineteenth story, Sacrifice, fits neatly on top of agape.

Sternberg’s research demonstrates that we may have predilections toward multiple love stories, each represented in a mental hierarchy and varying in weight in terms of their personal significance. This explains the frustration many of us experience when comparing potential partners. One person often fulfils some expected narratives - such as a need for mystery and fantasy – while lacking the ability to meet the demands of others (which may lie in direct contradiction). It is also the case that stories have varying abilities to adapt to a given cultural milieu and its respective demands. Love stories are, therefore, interactive and adaptive phenomena in our lives rather than rigid prescriptions.

Steinberg also explores how our love stories interact with the love stories of our partners. What happens when someone who sees love as art collides with someone who sees love as business? Can a Sewing story (love is what you make it) co-exist with a Theatre story (love is a script with predictable acts, scenes and lines)? Certainly, it is clear that we look for partners with love stories that complement and are compatible with our own narratives. But they do not have to be an identical match. Someone who sees love as mystery and art, for example, might locate that mystery better in a partner who views love through a lens of business and humour. Not all love stories, however, are equally well predisposed to relationship longevity; stories that view love as a game, as a kind of surveillance or as an addiction are all unlikely to prove durable.

Research on love stories continues apace. Defying the myth that rigorous science and the romantic persuasions of ordinary people are incompatible, this research demonstrates that good psychology can clarify and comment on the way we give affection and form attachments.

Look at the following statements (Questions 27–34) and the list of styles in the box below.

Match each statement with the correct term, A–F.

Write the correct letter, A–F, in boxes 27–34 on your answer sheet.

NB You may use any letter more than once.

27My most important concern is that my partner is happy.

28I enjoy having many romantic partners.

29I feel that my partner and I were always going to end up together.

30I want to be friends first and then let romance develop later.

31I always feel either very excited or absolutely miserable about my relationship. 32I prefer to keep many aspects of my love life to myself.

33When I am in love, that is all I can think about.

34I know before I meet someone what qualities I need in a partner.

List of Love Styles

A Eros

B Mania

C Storge

D Agape

E Ludus

F Pragma

Do the following statements agree with the claims of the writer in Reading Passage 3? In boxes 35–40 on your answer sheet, write

YES if the statement agrees with the claims of the writer

NO if the statement contradicts the claims of the writer

NOT GIVEN if it is impossible to say what the writer thinks about this

35People’s notions of love affect their relationships, rather than vice versa.

36Some of our love stories are more important to us than others.

37Our love stories can change to meet the needs of particular social environments. 38We look for romantic partners with a love story just like our own.

39The most successful partners have matching love stories.

40No love story is more suited to a long relationship than any other.

2019年雅思考试巩固模拟试题及答案

2019年雅思考试巩固模拟试题及答案1 Next Year Marks the EU's 50th Anniversary of the Treaty A. After a period of introversion and stunned self-disbelief, continental European governments will recover their enthusiasm for pan-European institution-building in 2007. Whether the European public will welcome a return to what voters in two countries had rejected so short a time before is another matter. B. There are several reasons for Europe’s recovering self-confidence. For years European economies had been lagging dismally behind America (to say nothing of Asia), but in 2006 the large continental economies had one of their best years for a decade, briefly outstripping America in terms of growth. Since politics often reacts to economic change with a lag, 2006’s improv ement in economic growth will have its impact in 2007, though the recovery may be ebbing by then. C. The coming year also marks a particular point in a political cycle so regular that it almost seems to amount to a natural law. Every four or five years, European countries take a large stride towards further integration by signing a new treaty: the Maastricht treaty in 1992, the Treaty of Amsterdam in 1997, the Treaty of Nice in 2001. And in 2005 they were supposed to ratify a European constitution, laying the ground for yet more integration—until the calm rhythm

雅思阅读预测真题库4参考答案

Animal’s Self-Medicatin TRUE/NOT GIVEN/FALSE/TRUE pitch/terpenses/alkaloids/detoxity/hooks G/D/E/C Development of Public Management Theory BE/AD/AB/AC/A/B/D/C/B ---------------------------------------------17 Koalas C/C/A/B/A YES/NO/NO/NOT GIVEN/YES/NOT GIVEN/YES A Coastal Archaeology of Britain C/D/A TRUE/FALSE/TRUE/FALSE/NOT GIVEN/TRUE/TRUE/ADF

Communication Styles and Conflict iii/vii/i/iv/ix/viii/v/ii TRUE/FALSE/NOT GIVEN/TRUE/TRUE B Talc Powder Applied on Food and Agricultural Industries B/B/A/A/C/B 20/foam/waste water/harmful/biodegrade/droplet(s)/lamination(packing)/gr ape grower(s) Human Navigation-finding our way B / C / A / C / B / C / D / A / TRUE / NOT GIVEN / TRUE / FALSE / NOT GIVEN Plant Scents B/A/F/C TRUE/NOT GIVEN/TRUE/FALSE B/B/C/D/A

雅思阅读真题

Climate and Country Wealth Why are some countries stupendously rich and others horrendously poor? Social theorists have been captivated by this question since the late 18th century, when Scottish economist Adam Smith argued in his magisterial work The Wealth of Nations that the best prescription for prosperity is a free-market economy in which the government allows businesses substantial freedom to pursue profits. Smith, however, made a second notable hypothesis: that the physical geography of a region can influence its economic performance. He contended that the economies of coastal regions, with their easy access to sea trade, usually outperform the economies of inland areas. Coastal regions and those near navigable waterways are indeed far richer and more densely settled than interior regions, just as Smith predicted. Moreover, an area's climate can also affect its economic development. Nations in tropical climate zones generally face higher rates of infectious disease and lower agricultural productivity (especially for staple foods) than do nations in temperate zones. Similar burdens apply to the desert zones. The very poorest regions in the world are those saddled with both handicaps: distance from sea trade and a tropical or desert ecology. The basic lessons of geography are worth repeating, because most economists have ignored them. In the past decade the vast majority of papers on economic development have neglected even the most obvious geographical realities. The best single indicator of prosperity is gross national product (GNP) per capita – the total value of a country's economic output, divided by its population. A map showing the world distribution of GNP per capita immediately reveals the vast gap between rich and poor nations. The great majority of the poorest countries lie in the geographical tropics. In contrast, most of the richest countries lie in the temperate zones. Among the 28 economies categorized as high income by the World Bank, only Hong Kong, Singapore and part of T aiwan are in the tropical zone, representing a mere 2 percent of the combined population of the high-income regions. Almost all the temperate-zone countries have either high-income economies (as in the cases of North America, western Europe, Korea and Japan) or middle-income economies (as in the cases of eastern Europe, the former Soviet Union and China). In addition, there is a strong temperate-tropical divide within countries that straddle both types of climates. Most of Brazil, for example, lies within the tropical zone, but the richest part of the nation – the southernmost states –is in the temperate zone. There are two major ways in which a region’s climate affects economic development. First, it affects the prevalence of disease. Many kinds of infectious diseases are endemic to the tropical and subtropical zones. This tends to be true of diseases in which the pathogen spends part of its life cycle outside the human host: for instance, malaria (carried by mosquitoes) and helminthic infections (caused by parasitic worms). Although epidemics of malaria have occurred sporadically as far north as Boston in the past century, the disease has never gained a lasting foothold in the temperate zones, because the cold winters naturally control the mosquito-based

雅思阅读模拟试题及答案解析(2)

雅思阅读模拟试题及答案解析(2)

Next Year Marks the EU's 50th Anniversary of the Treaty A. After a period of introversion and stunned self-disbelief,continental European governments will recover their enthusiasm for pan-European institution-building in . Whether the European public will welcome a return to what voters in two countries had rejected so short a time before is another matter. B. There are several reasons for Europe’s recovering self-confidence. For years European economies had been lagging dismally behind America (to say nothing of Asia), but in the large continental economies had one of their best years for a decade, briefly outstripping America in terms of growth. Since politics often reacts to economic change with a lag,’s improvement in economic growth will have its impact in , though the recovery may be ebbing by then. C. The coming year also marks a particular point in a political cycle so regular that it almost seems to amount to a natural law. Every four or five years, European countries take a large stride towards further integration by signing a new treaty: the Maastricht treaty in 1992, the Treaty of Amsterdam in 1997, the Treaty of Nice in . And in they were supposed to ratify a European constitution, laying the ground for yet more integration—until the calm rhythm was rudely shattered by French and Dutch voters. But the political impetus to sign something every four or five years has only been interrupted,not immobilised, by this setback. D. In the European Union marks the 50th anniversary of another treaty—the Treaty of Rome, its founding charter. Government leaders have already agreed to celebrate it ceremoniously, restating their commitment to “ever closer union” and the basic ideals of European unity. By itself, and in normal circumstances, the EU’s 50th-birthday greeting to itself would be fairly meaningless, a routine expression of European good fellowship. But it does not take a Machiavelli to spot that once governments have signed the declaration (and it seems unlikely anyone would be so uncollegiate as to veto

2015年雅思阅读模拟试题及答案解析三

Time to cool it 1 REFRIGERATORS are the epitome of clunky technology: solid, reliable and just a little bit dull. They have not changed much over the past century, but then they have not needed to. They are based on a robust and effective idea--draw heat from the thing you want to cool by evaporating a liquid next to it, and then dump that heat by pumping the vapour elsewhere and condensing it. This method of pumping heat from one place to another served mankind well when refrigerators' main jobs were preserving food and, as air conditioners, cooling buildings. Today's high-tech world, however, demands high-tech refrigeration. Heat pumps are no longer up to the job. The search is on for something to replace them. 2 One set of candidates are known as paraelectric materials. These act like batteries when they undergo a temperature change: attach electrodes to them and they generate a current. This effect is used in infra-red cameras. An array of tiny pieces of paraelectric material can sense the heat radiated by, for example, a person, and the pattern of the array's electrical outputs can then be used to construct an image. But until recently no one had bothered much with the inverse of this process. That inverse exists, however. Apply an appropriate current to a paraelectric material and it will cool down. 3 Someone who is looking at this inverse effect is Alex Mischenko, of Cambridge University. Using commercially available paraelectric film, he and his colleagues have generated temperature drops five times bigger than any previously recorded. That may be enough to change the phenomenon from a laboratory curiosity to something with commercial applications. 4 As to what those applications might be, Dr Mischenko is still a little hazy. He has, nevertheless, set up a company to pursue them. He foresees putting his discovery to use in more efficient domestic fridges and air conditioners. The real money, though, may be in cooling computers. 5 Gadgets containing microprocessors have been getting hotter for a long time. One consequence of Moore's Law, which describes the doubling of the number of transistors on a chip every 18 months, is that the amount of heat produced doubles as well. In fact, it more than doubles, because besides increasing in number,the components are getting faster. Heat is released every time a logical operation is performed inside a microprocessor, so the faster the processor is, the more heat it generates. Doubling the frequency quadruples the heat output. And the frequency has doubled a lot. The first Pentium chips sold by Dr Moore's company,Intel, in 1993, ran at 60m cycles a second. The Pentium 4--the last "single-core" desktop processor--clocked up 3.2 billion cycles a second. 6 Disposing of this heat is a big obstruction to further miniaturisation and higher speeds. The innards of a desktop computer commonly hit 80℃. At 85℃, they

2019年雅思考试阅读理解模拟练习试题及答案

2019年雅思考试阅读理解模拟练习试题及答案A. When Denis Hennequin took over as the European boss of McDonald’s in January 2004,the world’s biggest restaurant chain was showing signs of recovery in America and Australia,but sales in Europe were sluggish or declining.One exception was France,where Mr Hennequin had done a sterling job as head of the group’s French subsidiary to sell more Big Macs to his compatriots.His task was to replicate this success in all 41 of the European countries where anti- globalisers’favourite enemy operates. B. So far Mr Hennequin is doing https://www.sodocs.net/doc/166739127.html,st year European sales increased by 5.8%and the number of customers by 3.4%, the best annual results in nearly 15 years.Europe accounted for 36%of the group’s profits and for 28%of its sales.December was an especially good month as customers took to seasonal menu offerings in France and Britain,and to a promotion in Germany based on the game of Monopoly. C Mr Hennequin’s recipe for revival is to be more open about his company’s operations,to be“locally relevant”,and to improve the experience of visiting his 6,400 restaurants.McDonald’s is blamed for making people fat,exploiting workers,treating animals cruelly,polluting the environment and simply for being American.Mr Hennequin says

2019雅思阅读考试真题(19)

2019年雅思IELTS考试备考资料模拟试题及答案14 The nervous system of vertebrates is characterized by a hollow, dorsal nerve cord that ends in the head region as an enlargement, the brain. Even in its most primitive form this cord and its attached nerves are the result of evolutionary specialization, and their further evolution from lower to higher vertebrate classes is a process that is far from fully understood. Nevertheless, the basic arrangements are similar in all vertebrates, and the study of lower animals gives insight into the form and structure of the nervous system of higher animals. Moreover, for any species, the study of the embryological development of the nervous system is indispensable for an understanding of adult morphology. In any vertebrate two chief parts of the nervous system may be distinguished. These are the central nervous system (the nerve cord mentions above), consisting of the brain and spinal cord, and the peripheral nervous system, consisting of the cranial, spinal, and peripheral nerves, together with their motor and sensory endings. The term "autonomic nervous system" refers to the parts of the central and peripheral systems that supply and regulate the activity of cardiac muscle, smooth muscle, and many glands. The nervous system is composed of many millions of nerve and glial cells, together with blood vessels and a small amount of connective tissue. The nerve cells, or "neurons", are characterized by many processes and are specialized in that they exhibit to a great degree the phenomena of irritability and conductivity. The glial cells of the central nervous system are supporting cells collectively termed

雅思阅读试卷 附完整参考答案

Section I Words A.Match the words with the same meaning.W rite down the letters on you answer sheet. (1(1’’*6) 1.epidermic 2.motivate 3.assume 4.appealing 5.controversy 6expertise A.skill or knowledge in a particular area B.dispute,argument C.attractive D.an outbreak of a contagious disease that spreads rapidly and widely E.to provide with an incentive;impel . F.to take for granted,suppose B.Fill in the blanks with proper forms of words given in the box,one word can be used more than once.(1(1’’*10) evolve prepare propose minimum peer through cheat weep address exploit except 1.Not surprisingly,his was not well received,even though it seemed to agree with the scientific information available at the time.. 2.The little girl with disappointment when she learned that her favourite Barbie Dolls were sold out. 3.The price is her,she refuses to lower it any further. 4.Apes,monkeys and many other primates have fairly elaborate systems of calls for communicating with other members of their species. 5.Some melodies are quite manipulative,working on our emotions very effectively,and composers have often this to the full. 6.I realized I’d been when I saw the painting on sale for half the price I paid for it. 7.To this problem,Counter Intelligence built a kitchen of its own and started making gagets to fill it with. 8.Most birds don’t have a good sense of smell,but fish-eaters such as petrels and shearwaters are significant. 9.Why bother a clear door,when you can put a camera in the oven to broadcast snapshots of the activities in the oven to a screen in another room? 10.Exploration will allow us to make suitable for dealing with any dangers that we might face,and we may be able to find physical resources such as minerals. SectionⅡ.Translation A.Translate the following sentences into English.(3(3’’*5) 1.Despite the hardship he encountered,Mark never (放弃对知识的追求) 2.由于缺乏对这种病的了解,许多人依然认为HIV受害者都是自作自受。(owing to; ignorance)

2020年11月21日雅思考试真题及答案

2020年11月21日雅思考试真题及答案 雅思线下11月21日已结束,雅思又上热搜,很多小伙伴看到阅读的书剑,内心都一惊。11月难度再次刷新,不知道12月的会不会简单点……那么2020年11月21日雅思考试试题如何呢?我们一起回顾下: 2020年11月21日雅思听力真题及答案SECTION 1 主题:旅游咨询 题型:填空 参考答案: 1. 13 July 2. Temple 3. ferry 4. moderate 5. dancing 6. castle 7. breakfast 8. house 9. Harvey 10. 45 days SECTION 2

主题:交响音乐会介绍 题型:选择+匹配 参考答案: 11. new people 12. who can play violin 13. attend two rehearsals every week 14. play in local area 15. E 16. F 17. A 18. G 19. B 20. H SECTION 3 主题:关于学习的调研网课讨论 题型:选择+匹配 SECTION 4 主题:气候与建筑 题型:填空 参考答案: 31. both in rural areas and in cities 32. received funds of a city bank

33. skyscrapers: lower levels of acid in damaging pollutants 34. in recent years, Alter Project focuses on the buildings made of stone 35. glasses used to reduce pollution in skyscrapers 36. are affected by the increased rainfall 37. humidity affects the constrictions made of wood 38. are worried about the soil that protects the foundation of buildings 39. architects monitor the evidence of the movement of buildings 40. government should make guidelines for architects 2020年11月21日雅思阅读真题及答案Passage 1 主题:新旧公园 题型:匹配+选择 参考答案: 1. A:visibility and accessibility of parks 2. B:park numbers increased 3. C:reasons why park popularity declined 4. D:importance of park design 5. E:different opinions in the park roles 6. F:different functions of parks 7. David 8. James

雅思阅读模拟试题及答案解析(4)

雅思阅读模拟试题及答案解析(4)

Selling Digital Music without Copy-protection Makes Sense A. It was uncharacteristically low-key for the industry’s greatest showman. But the essay published this week by Steve Jobs, the boss of Apple,on his firm’s website under the unassuming title “Thoughts on Music” has nonetheless provoked a vigorous debate about the future of digital music,which Apple dominates with its iPod music-player and iTunes music-store. At issue is “digital rights management” (DRM)—the technology guarding downloaded music against theft. Since there is no common standard for DRM, it also has the side-effect that songs purchased for one type of music-player may not work on another. Apple’s DRM system, called FairPlay, is the most widespread. So it came as a surprise when Mr. Jobs called for DRM for digital music to be abolished. B. This is a change of tack for Apple. It has come under fire from European regulators who claim that its refusal to license FairPlay to other firms has “locked in” customers. Since music from the iTunes store cannot be played on non-iPod music-players (at least not without a lot of fiddling), any iTunes buyer will be deterred from switching to a device made by a rival firm, such as Sony or Microsoft. When French lawmakers drafted a bill last year compelling Apple to open up FairPlay to rivals, the company warned of “state-sponsored piracy”. Only DRM, it implied, could keep the pirates at bay. C. This week Mr. Jobs gave another explanation for his former defence of DRM: the record companies made him do it. They would make their music available to the iTunes store only if Apple agreed to protect it using DRM. They can still withdraw their catalogues if the DRM system is compromised. Apple cannot license FairPlay to others, says Mr Jobs, because it would depend on them to produce security fixes promptly. All DRM does is restrict consumer choice and provide a barrier to entry, says Mr Jobs; without it there would be far more stores and players, and far more innovation. So, he suggests, why not do away with DRM and sell music unprotected?“This is

相关主题