单选题Since the late 1960s, another image of "one world" has edged its way into contemporary consciousness--the globe in its physical finiteness. We share in "humanity", we are connected by the "world market", but we are condemned to one destiny because we are inhabitants of one planet. This is the message conveyed by the first photograph of the "one world", taken from outer space, which has irresistibly emerged as the icon of our age. The photo shows the planet suspended in the vastness of the universe and impresses on everybody the fact that the Earth is one body. Against the darkness of infinity, the circular Earth offers itself as an abode, a bounded place. The sensation of being on and inside it strikes the onlooker almost instantly. The unity of the world is now documented. It can be seen everywhere. It jumps out at you from book covers, T-shirt and commercials. In the age of TV, photographs are our eyewitness. For the first time in history, the planet is revealed in its solitude. From now on, "One world" means physical unity; it means "one Earth". The unity of mankind is no longer an Enlightenment fancy or a commercial act but a biophysical fact. However, this physical interconnectedness stands in relief against the background of proliferating dangers. From creeping desertification to impending climate disaster, alarm signals multiply. The biosphere is under attack and threatens to cave in. Local acts such as driving a car or clearing a forest add up, when multiplied, to global imbalances. They turn beneficial cycles into vicious ones that undermine the reliability of nature. In the face of incalculable debacles, concerned voices call for a global political coherence which would match the biophysical interconnections. "The Earth is one but the world is not. We all depend on one biosphere for sustaining our lives." After having intoned this leitmotiv, the Brundtland Reports spells out the fateful new meaning of unity. The Brundtland Report, the leading document on development policy in the late 1980s, takes unity for granted, but a unity which is now the result of a threat.

单选题 Bernard Jackson is a free man today, but he has many bitter memories. Jackson spent five years in prison after a jury wrongly convicted him of raping two women. At Jackson's trial, although two witnesses testified that Jackson was with them in another location at the times of the crimes, he was convicted anyway. Why? The jury believed the testimony of the two victims, who positively identified Jackson as the man who has attacked them. The court eventually freed Jackson after the police found the man who had really committed the crimes. Jackson was similar in appearance to the guilty man. The two women has made a mistake in identity. As a result, Jackson has lost five years of his life. The two women in this case were eyewitnesses. They clearly saw the man who attacked them, yet they mistakenly identified an innocent person. Similar incidents have occurred before. Eyewitnesses to other crimes have identified the wrong person in a police lineup or in photographs. Many factors influence the accuracy of eyewitness testimony. For instance, witnesses sometimes see photographs of several suspects before they try to identify the person they saw in a lineup of people. They can become confused by seeing many photographs or similar faces. The number of people in the lineup, and whether it is a live lineup or a photograph, may also affect a witnesses decision. People sometimes have difficulty in identifying people of other races. The questions the police ask witnesses also have an effect on them. Are some witnesses more reliable than others? Many people believe that police officers are more reliable than ordinary people. Psychologists decided to test this idea, and they discovered that it is not true. Two psychologists showed a film of crimes to both police officers and civilians. The psychologists found no difference between the police and the civilians in correctly remembering the details of the crimes. Despite all the possibilities for inaccuracy, courts cannot exclude eyewitness testimony from a trial. American courts depend almost completely on eyewitness testimony to resolve court cases. Sometimes it is the only evidence to a crime, such as rape. Furthermore, eyewitness testimony is often correct. Although people do sometimes make mistakes, many times they really do identify individuals correctly. American courts depend on the ability of the 12 jurors, and not the judges, to determine the accuracy of the witnesses testimony. It is their responsibility to decide if a certain witness could actually see, hear, and remember what occurred. In a few cases, the testimony of eyewitnesses has convicted innocent people. More importantly, it has rightly convicted a larger number of guilty people; consequently, it continues to be of great value in the American judicial system.

单选题 Questions 16-20 Science is a dominant theme in our culture. Since it touches almost every facet of our life, educated people, need at least some acquaintance with its structure and operation. They should also have an understanding of the subculture in which scientists live and the kinds of people they are. An understanding of general characteristics of science as well as specific scientific concepts is easier to attain if one knows something about the things that excite and frustrate the scientist. This book is written for the intelligent student or lay person whose acquaintance with science is superficial; for the person who has been presented with science as a musty storehouse of dried facts; for the person who sees the chief objective of science as the production of gadgets; and for the person who views the scientists as some sort of magician. The book can be used to supplement a course in any science, to accompany any course that attempts to give an understanding of the modern world, or--independently of any course--simply to provide a better understanding of science. We hope this book will lead readers to a broader perspective on scientific attitudes and a more realistic view of what science is. who scientists are, and what they do. It will give them an awareness and understanding of the relationship between science and our culture and an appreciation of the roles science may play in our culture. In addition, readers may learn to appreciate the relationship between scientific views and some of the values and philosophies that are pervasive in our culture. We have tried to present in this book an accurate and up-to-date picture of the scientific community and the people who populate it. That population has in recent years come to comprise more and more women. This increasing role of women in the scientific subculture is not a unique incident but, rather, part of the trend evident in all segments of society as more women enter traditionally male-dominated fields and make significant contributions. In discussing these changes and contribution, however, we are faced with a language that is implicitly sexist, one that uses male nouns or pronouns in referring to unspecified individuals. To offset this built-in bias, we have adopted the policy of using plural nouns and pronouns whenever possible and, when absolutely necessary, alternating him and her. This policy is far from being ideal, but it is at least an acknowledgment of the inadequacy of our language in treating hail of the human race equally. We have also tried to make the book entertaining as well as informative. Our approach is usually informal. We feel, as do many other scientists, that we shouldn't take ourselves too seriously. As the reader may observe, we see science as a delightful pastime rather than as a grim and dreary way to earn a living.

单选题I am afraid to sleep. I have been afraid to sleep for the last few weeks. I am so tired that, finally, I do sleep, but only for a few minutes. It is not a bad dream that wakes me; it is the reality I took with me into sleep. I try to think of something else. Immediately the woman in the marketplace comes into my mind. I was on my way to dinner last night when I saw her. She was selling skirts. She moved with the same ease and loveliness I often saw in the women of Laos. Her long black hair was as shiny as the black silk of the skirts she was selling. In her hair, she wore three silk ribbons, blue, green, and white. They reminded me of my childhood and how my girlfriends and I used to spend hours braiding ribbons into our hair. I don"t know the word for "ribbons", so I put my hand to my own hair and , with three fingers against my head , I looked at her ribbons and said "Beautiful. " She lowered her eyes and said nothing. I wasn"t sure if she understood me (I don"t speak Laotian very well). I looked back down at the skirts. They had designs on them: squares and triangles and circles of pink and green silk. They were very pretty. I decided to buy one of those skirts, and I began to bargain with her over the price. It is the custom to bargain in Asia. In Laos bargaining is done in soft voices and easy moves with the sort of quiet peacefulness. She smiled, more with her eyes than with her lips. She was pleased by the few words I was able to say in her language, although they were mostly numbers, and she saw that I understood something about the soft playfulness of bargaining. We shook our heads in disagreement over the price; then, immediately, we made another offer and then another shake of the head. She was so pleased that unexpectedly, she accepted the last offer I made. But it was too soon. The price was too low. She was being too generous and wouldn"t make enough money. I moved quickly and picked up two more skirts and paid for all three at the price set; that way I was able to pay her three times as much before she had a chance to lower the price for the larger purchase. She smiled openly then, and, for the first time in months, my spirit lifted. I almost felt happy. The feeling stayed with me while she wrapped the skirts in a newspaper and handed them to me. When I left, though, the feeling left, too. It was as though it stayed behind in marketplace. I left tears in my throat. I wanted to cry. I didn"t, of course. I have learned to defend myself against what is hard; without knowing it, I have also learned to defend myself against what is soft and what should be easy. I get up, light a candle and want to look at the skirts. They are still in the newspaper that the woman wrapped them in. I remove the paper, and raise the skirts up to look at them again before I pack them. Something falls to the floor. I reach down and feel something cool in my hand. I move close to the candlelight to see what I have. There are five long silk ribbons in my hand, all different colors. The woman in the marketplace! She has given these ribbons to me! There is no defense against a generous spirit, and this time I cry, and very hard, as if I could make up for all the months that I didn"t cry.

单选题Imagine a bacterium that, when injected into the bloodstream, would travel to the site of a tumor, insert itself into the cancer cell, and then produce a cancer-killing compound. That"s exactly what scientists at the University of California, Berkeley(UCB) and University of California, San Francisco(UCSF) have set out to do. Traditional cancer therapies are limited for two key reasons: little of the drag actually reaches the tumor and the drug is toxic to both cancerous and healthy tissues. Bacteria, however, have the potential to precisely target cells. "In a way, bacteria are the ultimate in smart drugs," says George Church, a geneticist at Harvard Medical School in Boston (he was not involved in the current work, but will collaborate on the project in the future). "It"s hard to pack a lot of intelligence into a small molecule or protein; but bacteria can have sensors and actuators and can drill into a cell, like a submarine." To build a cancer-killing bacterium, biologists must create organisms that can perform a series of complicated functions--namely, when in the bloodstream, they have to sense and respond to the tumor environment. Once inside the tumor, the bacteria must infiltrate the cancer cell, and then--and only then--start producing a tumor-killing toxin. The researchers plan to engineer such super-organisms by co-opting parts from different types of bacteria and inserting them into Escherichia coli, a bacterium commonly used in research. Tumor tissue has unique characteristics, including lower oxygen and higher lactic acid concentrations than surrounding tissue. To create a bacterium that can sense a tumor, Christopher Anderson, a postdoctoral researcher at UCB and UCSF, and colleagues took an oxygen sensor from E. coli and linked it to a special protein, called invasin, from another type of bacteria, which allows the organism to invade cancer cells. In a paper published earlier this year in the Journal of Molecular Biology, the researchers showed in a test tube that the engineered bacterium selectively invades tumor cells. Anderson and colleagues are now working on making the system even more specific. To ensure that the bacteria invade only tumor cells, they will create a genetic mechanism that allows the invasin protein to be expressed only when two conditions are met, such as when both the oxygen and lactic acid concentrations are at a certain level. Essentially, it"s a genetic version of what"s known in engineering terms as an AND gate--a regulatory circuit that"s turned on only if two conditions are met. "By using multiple cues, we can garner a great deal of specificity," says Adam Arkin, a bioengineer at UCB and the Lawrence Berkeley National Laboratory, a TR100 recipient in 1999, and one of the senior scientists on the project. "After the bacteria sense the cues, they turn on the rest of the apparatus to do the job."

单选题 Questions 16-20 The tourist trade is booming. With all this coming and going, you'd expect greater understanding to develop between the nations of the world. Not a bit of it! Superb systems of communication by air, sea and land make it possible for us to visit each other's countries at a moderate cost. What was once the "grand tour", reserved for only the very rich, is now within everybody's grasp. The package tour and chartered flights are not to be sneered at. Modern travelers enjoy a level of comfort which the lords and ladies on grand tours in the old days couldn't have dreamed of. But what's the sense of this mass exchange of populations if the nations of the world remain basically ignorant of each other? Many tourist organizations are directly responsible for this state of affairs. They deliberately set out to protect their clients from too much contact with the local population. The modern tourist leads a cosseted, sheltered life. He lives at international hotels, where he eats his international food and sips his international drink while he gazes at the natives from a distance. Conducted tours to places of interest are carefully censored. The tourist is allowed to see only what the organizers want him to see and no more. A strict schedule makes it impossible for the tourist to wander off on his own; and anyway, language is always a barrier, so he is only too happy to be protected in this way. At its very worst, this leads to a new and hideous kind of colonization. The summer quarters of the inhabitants are temporarily reestablished on the island of Corfu. Blackpool is recreated at Torremolinos where the traveler goes not to eat paella, but fish and chips. The sad thing about this situation is that it leads to the persistence of national stereotypes. We don't see the people of other nations as they really are, but as we have been brought up to believe they are. You can test this for yourself. Take five nationalities, say, French, German, English, American and Italian. Now in your mind, match them with these five adjectives: musical, amorous, cold, pedantic, native. Far from providing us with any insight into the national characteristics of the peoples just mentioned, these adjectives actually act as barriers. So when you set out on your travels, the only characteristics you notice are those which confirm your preconceptions. You come away with the highly unoriginal and inaccurate impression that, say, "Anglo-Saxons are hypocrites" or that "Latin peoples shout a lot". You only have to make a few foreign friends to understand how absurd and harmful national stereotypes are. But how can you make foreign friends when the tourist trade does its best to prevent you? Carried to an extreme, stereotypes can be positively dangerous. Wild generalizations stir up racial hatred and blind us to the basic fact--how trite it sounds! That all people are human. We are all similar to each other and at the same time all unique.

单选题 Questions 11-15 As regards social conventions, we must say a word about the well-known English class system. This is an embarrassing subject for English people, and one they tend to be ashamed of, though during the present century class-consciousness has grown less and less, and the class system less rigid. But it still exists below the surface. Broadly speaking, it means there are two classes, the "middle class" and the "working class". (We shall ignore for a moment the old "upper class", including the hereditary aristocracy, since it is extremely small in numbers; but some of its members have the right to sit in the House of Lords, and some newspapers take surprising interest in their private life. The middle class consists chiefly of well-to-do businessmen and professional people of all kinds. The working class consists chiefly of manual and unskilled workers. ) The most obvious difference between them is in their accent. Middle-class people use slightly varying kinds of "received pronunciation" which is the kind of English spoken by BBC announcers and taught to overseas pupils. Typical working-class people speak in many different local accent which are generally felt to be rather ugly and uneducated. One of the biggest barriers of social equality in England is the two-class education system. To have been to a so-called "public school" immediately marks you out as one of the middle class. The middle classes tend to live a more formal life than working-class people, and are usually more cultured. Their midday meal is "lunch" and they have a rather formal evening meal called "dinner", whereas the working man's dinner, if his working hours permit, is at midday, and his smaller, late-evening meal is called supper. As we have said, however, the class system is much less rigid than it was, and for a long time it has been government policy to reduce class distinctions. Working-class students very commonly receive a university education and enter the professions, and working-class incomes have grown so much recently that the distinctions between the two classes are becoming less and less clear. However, regardless of one's social status, certain standards of politeness are expected of everybody, and a well-bred person is polite to everyone he meets, and treats a laborer with the same respect he gives an important businessman. Servility inspires both embarrassment and dislike. Even the word "sir", except in school and in certain occupations (e. g. commerce, the army, etc. ) sounds too servile to be commonly used.

单选题You know Adam Smith for his "invisible hand," the mysterious force that steers the selfish economic decisions of individuals toward a result that leaves us all better off. It's been a hugely influential idea, one that during the last few decades of the 20th century began to take on the trappings of a universal truth. Lately, though, the invisible hand has been getting slapped. The selfish economic decisions of home buyers, mortgage brokers, investment bankers and institutional investors over the past decade clearly did not leave us all better off. Did Smith have it wrong? No, Smith did not have it wrong. It's just that some of his self-proclaimed disciples have given us a terribly incomplete picture of what he believed. The man himself used the phrase invisible hand only three times: once in the famous passage from The Wealth of Nations that everybody cites; once in his other big book, The Theory of Moral Sentiments; and once in a posthumously published history of astronomy (in which he was talking about "the invisible hand of Jupiter"--the god, not the planet). For Smith, the invisible hand was but one of an array of interesting social and economic forces worth thinking about. Why did the invisible, hand emerge as the one idea from Smith's work that everybody remembers? Mainly because it's so simple and powerful. If the invisible hand of the market really can be relied on at all times and in all places to deliver the most prosperous and just society possible, then we'd be idiots not to get out of the way and let it work its magic. Plus, the supply-meets- demand straightforwardness of the invisible-hand metaphor lends itself to mathematical treatment, and math is the language in which economists communicate with one another. Hardly anything else in Smith's work is nearly that simple or consistent. Consider The Theory of Moral Sentiments, his long-neglected other masterpiece, published 17 years before The Wealth of Nations, in 1759. I recently cracked open a new 250th-anniversary edition, complete with a lucid introduction by economist Amartya Sen, in hopes that it would make clearer how we ought to organize our economy. Fat chance. Most of the book is an account of how we decide whether behavior is good or not. In Smith's telling, the most important factor is our sympathy for one another." "To restrain our selfish, and to indulge our benevolent affections, constitutes the perfection of human nature," he writes. But he goes on to say that "the commands and laws of the Deity" (he seems to be referring to the Ten Commandments) are crucial guides to conduct too. Then, in what seems to be a strange detour from those earthly and divine parameters, he argues that the invisible hand ensures that the selfish and sometimes profligate spending habits of the rich tend to promote the public good. There are similar whiplash moments in The Wealth of Nations. The dominant theme running through the book is that self-interest and free, competitive markets can be powerful forces for prosperity and for good. But Smith also calls for regulation of interest rates and laws to protect workers from their employers. He argues that the corporation, the dominant form of economic organization in today's world, is an abomination. The point here isn't that Smith was right in every last one of his prescriptions and proscriptions. He was an 18th century Scottish scholar, not an all-knowing being. Many of his apparent self-contradictions are just that--contradictions that don't make a lot of sense. But Smith was also onto something that many free-market fans who pledge allegiance to him miss. The world is a complicated place. Markets don't exist free of societies and governments and regulators and customs and moral sentiments; they are entwined. Also, while markets often deliver wondrous results, an outcome is not by definition good simply because the market delivers it. Some other standards have to be engaged. Applying Smith's teachings to the modern world, then, is a much more complex and doubtful endeavor than it's usually made out to be. He certainly wouldn't have been opposed to every government intervention in the market. On financial reform, it's easy to imagine Smith supporting the creation of a Consumer Financial Protection Agency and crackdowns on giant financial institutions. He might have also favored the just-passed health care reform bill, at least the part that requires states to set up exchanges to ensure retail competition for health insurance. Then again, he might not have. Asking "What would Adam Smith say?" is a lot easier than conclusively answering it. It is pretty clear, though, that he wouldn't just shout, "Don't interfere with the invisible hand!" and leave it at that.

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单选题IN 1871 America added about 6,000 miles of track to its railways, an endeavor that occupied a tenth of its industrial labour force. But by 1875 track-building had fallen by more than two-thirds, and employed less than 3 % of America"s workers. According to Brad DeLong, an economic historian at the University of California, Berkeley, the violent ups and downs of the railway industry help to explain the popularity, before the Great Depression and John Maynard Keynes, of a fatalistic view of the business cycle. Recessions, however unpleasant, were cathartic, and therefore necessary. They released capital and labour from profitless activities (such as laying the year"s 6,000th mile of track) as an essential prelude to redeploying them elsewhere. "Depressions are not simply evils, which we might attempt to suppress," wrote Joseph Schumpeter. They represent "something which has to be done". In Schumpeter"s day, this fatalism was shared by many at America"s Federal Reserve. But today"s Fed acts quickly to suppress recessions, which it recognises are mostly due to a lack of demand, not an excess of track. For the Fed, recessions are good for one thing, and one thing only: curbing inflation. Unfortunately, this task is now an urgent one. According to figures released this week, core consumer prices rose by 2.7% in the year to July—too fast for comfort. In theory, curbing this inflation could be painless. If the Fed"s commitment to price stability is credible, and if people look forward, not backward, when settling their wages and setting their prices, they will respond to the Fed"s promises. Unfortunately, in practice, inflation suffers from strong inertia. Hence cutting it typically requires a slowing of the economy as well as a lowering of inflationary expectations. Like pagans sharpening their knives, economists debate the size of this "sacrifice ratio": the number of people who must lose their jobs to appease the gods of price stability. Some models, including one of many that guide the Fed"s deliberations, put this ratio as high as 4.25, which means that unemployment must rise by one percentage point (or 1.5m people) for 4.25 years to reduce inflation by one percentage point. But other, less bloodthirsty economists suggest the ratio is more like 2 or 2.5. Ratios like these mean that for the first time in years America"s domestic economists, who track their country"s inflation and unemployment, are as worded about the future as its international economists, who fixate on the country"s external imbalances. The internationalists have long feared that a recession might lie ahead should foreigners abruptly abandon the dollar. The prospect of a more conventional downturn—engineered not by foreign central banks, but by America"s own—suggests the cart and horse belong in a different order. A recession might bring about a reversal of the current-account deficit, rather than the other way around. Recessions were, after all, part and parcel of Portugal"s current-account reversal, which began in 1982, Britain"s from 1989 and Spain"s from 1991. In reality, however, America"s deficit is unlikely to close without its industrial structure changing substantially. Only about a quarter of what it now produces can be sold across borders. Andrew Tilton of Goldman Sachs has calculated that to boost exports and narrow its deficit to 2.5% of GDP by 2010, America would need to increase its manufacturing capacity by about 17%. But until this year, it was housing, a non-traded good par excellence, which has attracted extra labour and capital. In 2005 the share of construction workers in payroll employment was the highest in 50 years, and residential investment accounted for the biggest chunk of GDP since 1951. Schumpeter, no doubt, would call this "maladjustment". Might a recession do for housing what it did for late-19th-century railways? The last downturn was accompanied by substantial restructuring, according to a widely cited paper by Erica Groshen and Simon Potter of the Federal Reserve Bank of New York. Workers who lost their jobs in the 2001 recession did not return to the same industry during the recovery. Instead, those who did not leave the labour force altogether slowly migrated to new industries. Companies, the authors wrote, saw the recession "not as an event to be weathered but as an opportunity—or even a mandate—to reorganise production permanently, close less efficient facilities and cull stuff". Schumpeter could not have put it better himself. Recession is not inevitable. But if a 2007 slowdown curbs inflation, narrows the trade deficit and clears space for an American manufacturing revival it will prove a surprisingly fruitful period of dearth.

单选题 {{B}}Questions 27-30{{/B}}

单选题In writing the last sentence, the author ______.

单选题 Bernard Jackson is a free man today, but he has many bitter memories. Jackson spent five, years in prison after a jury wrongly convicted him of raping two women. At Jackson's trial, although two witnesses testified that Jackson was with them in another location at the times of the crimes, he was convicted anyway. Why? The jury believed the testimony of the two victims, who positively identified Jackson as the man who had attacked them. The court eventually freed Jackson after the police found the man who had really committed the crimes. Jackson was similar in appearance to the guilty man. The two women had made a mistake in identity. As a result, Jackson has lost five years of his life. The two women in this case were eyewitnesses. They clearly saw the man who attacked them, yet they mistakenly identified an innocent person. Similar incidents have occurred before. Eyewitnesses to other crimes have identified the wrong person in a police lineup or in photographs. Many factors influence the accuracy of eyewitness testimony. For instance, witnesses sometimes see photographs of several suspects before they try to identify the person they saw in a line-up of people. They can become confused by seeing many photographs or similar faces. The number of people in the line-up, and whether it is a live line-up or a photograph, may also affect a witness's decision. People sometimes have difficulty identifying people of other races. The questions the police ask witnesses also have an effect on them. Are some witnesses more reliable than others? Many people believe that police officers are more reliable than ordinary people. Psychologists decided to test this idea, and they discovered that it is not true. Two psychologists showed a film of crimes to both police officers and civilians. The psychologists found no difference between the police and the civilians in correctly remembering the details of the crimes. Despite all the possibilities for inaccuracy, courts cannot exclude eyewitness testimony from a trial. American courts depend almost completely on eyewitness testimony to resolve court cases. Sometimes it is the only evidence to a crime, such as rape. Furthermore, eyewitness testimony is often correct. Although people do sometimes make mistakes, many times they really do identify individuals correctly. American courts depend on the ability of the 12 jurors, and not the judges, to determine the accuracy of the witness's testimony. It is their responsibility to decide if a certain witness could actually see, hear, and remember what occurred. In a few cases, the testimony of eyewitnesses has convicted innocent people. More importantly, it has rightly convicted a larger number of guilty people; consequently, it continues to be of great value in the American judicial system.

单选题HowmanymagazinesdidDavidlendtothewoman?[A]Three.[B]Two.[C]One.

单选题From the health point of view we are living in a marvelous age. We are immunized from birth against many of the most dangerous diseases. A large number of once fatal illnesses can now be cured by modem drugs and surgery. It is almost certain that one day remedies will be found for the most stubborn remaining diseases. The expectation of life has increased enormously. But though the possibility of living a long and happy life is greater than ever before, every day we witness the incredible slaughter of men, women and children on the roads. Man versus the motor-car! It is a never-ending battle which man is losing. Thousands of people the world over are killed or horribly killed each year and we are quietly sitting back and letting it happen. It has been rightly said that when a man is sitting behind a steering wheel, his car becomes the extension of his personality. There is no doubt that the motor-car often brings out a man"s very worst qualities. People who are normally quiet and pleasant may become unrecognizable when they are behind a steering-wheel. They swear, they are ill-mannered and aggressive, willful as two-years-olds and utterly selfish. All their hidden frustrations, disappointments and jealousies seem to be brought to the surface by the act of driving. The surprising thing is that society smiles so benignly on the motorist and seems to condone his behaviour. Everything is done for his convenience. Cities are allowed to become almost uninhabitable because of heavy tragic; towns are made ugly by huge car parks; the countryside is desecrated by road networks; and the mass annual slaughter becomes nothing more than a statistic, to be conveniently forgotten. It is high time a world code were created to reduce this senseless waste of human life. With regard to driving, the laws of some countries are notoriously lax and even the strictest are not strict enough. A code which was universally accepted could only have a dramatically beneficial effect on the accident rate. Here are a few examples of some the things that might be done. The driving test should be standardized and made far more difficult than it is; all the drivers should be made to take a test every three years or so; the age at which young people are allowed to drive any vehicle should be raised to at least 21; all vehicles should be put through stringent annual tests for safety. Even the smallest amount of alcohol in the blood can impair a person"s driving ability. Present drinking and driving laws (where they exist) should be made much stricter. Maximum and minimum speed limits should be imposed on all roads. Governments should lay down safety specifications for manufacturers, as has been done in the USA. All advertising stressing power and performance should be banned. These measures may sound inordinately harsh. But surely nothing should be considered as to severe if it results in reducing the annual toll of human life. After all, the world is for human beings, not motor-cars.

单选题 Every generation has its emblematic boy's toy. once upon a time there was the golf cart: a little toy car specifically designed for middle-aged men too rich to care about looking ridiculous. Later came the beach buggy, a briefly fashionable, wildly impractical, single-terrain vehicle. one might include the motorcycle or the snowmobile on this list, were they not, in certain contexts, quite useful, but there is no doubt which pointless recreational vehicle has captured the imagination of the landed, middle-aged celebrity: it's the quad bike. What is it about this squat, ungainly, easy-to-flip machine that celebrities love so much? As recreational vehicles go, the quad bike is hardly sophisticated. They are to the countryside what the jet-ski is to Lake Windermere. "There's nothing cool about a quad," says Simon Tiffin, editor of a well-known magazine. "It's a strange thing to want to hare round beautiful bits of the country in a petrol-guzzling machine." But celebrities love quad bikes. Musicians, comedians, DJs, actors and sportsmen have all been photographed aboard quads. "They're the latest rich person's toy," says Tiffin. "Spoilt children get them for Christmas." Provided you've got a large estate to go with it, however, the quad bike can remain a secret indulgence. You can go out and tear up your own piece of countryside without anyone knowing you're doing it. The quad bike's nonsensical name -- "quad" means four, but "bike" is an abbreviation of "bicycle," which means two -- that comes to six -- hints at its odd history. Originally the ATV, or all-terrain vehicle, as quads are sometimes known, was developed in Japan as a three-wheeled farm vehicle, an inexpensive mini-tractor that could go just about anywhere. In the 1980s the more stable four-wheeled quad was officially introduced -- enthusiasts had been converting their trikes for some time -- again primarily for farming, but its recreational appeal soon became apparent. At the same time a market for racing models was developing. Paul Anderson, a former British quad racing champion, says the quad's recreational appeal lies in its potential to deliver a safe thrill. "It's a mix between a motorbike and driving a car; when you turn a corner, you've got to lean into the corner, and then if the ground's greasy, the rear end slides out," he says. "Plus they're much easier to ride than a two-wheeled motorcycle." The quad bike, in short, provides middle-aged excitement for men who think a Harley might be a bit dangerous. Anderson is keen to point out that quad bikes are, in his experience, much safer than motorcycles. "With quad racing it's very rare that we see anybody having an accident and getting injured," he says. "In the right hands, personally, I think a quad bike is a very safe recreational vehicle," he adds. Outside of racing, quad bikes are growing in popularity and injuries have trebled in the last five years. Although retailers offer would-be purchasers basic safety instructions and recommend that riders wear gloves, helmets, goggles, boots and elbow pads, there is no licence required to drive a quad bike and few ways to encourage people to ride them wisely. Employers are required to provide training to workers who use quad bikes, but there is nothing to stop other buyers hurting themselves. For the rest of the world, quad bikes are here to stay. They feature heavily in the programmes of holiday activity centres, they have all but replaced the tractor as the all-purpose, agricultural workhorse and now police constables ride them while patrolling the Merseyside coastline. It has more or less usurped the beach buggy, the dirt bike and the snowmobile, anywhere they can go the quad bike can. They even race them on ice. You can't drive round Lake Windermere on one, or at least nobody's tried it yet. Just wait.

单选题Ed preferred their password for the alarm to be _______.

单选题Which of the following belongs to the mainstream programs that viewers are getting from TV?

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