单选题Did you ever have someone's name on the tip of your tongue and yet you were unable to recall it? (1) this happens again, do no (2) to recall it. Do something (3) for a couple of minutes, (4) the name may come into your head. The name is there since you have met (5) person and his name. It (6) has to be dug out. The initial effort to recall (7) the mind for operation, but it is the subconscious (8) that go to work to dig up a (9) memory. Forcing yourself to recall (10) never helps because it doesn't (11) your memory；it only tightens it. Students find the preparatory method help (12) examinations. They read over the questions (13) trying to answer any of them. (14) they answer first the ones (15) which they are most confident. Meanwhile, deeper mental activities in the subconscious mind are taking (16) ; work is being done on the (17) difficult questions. By the time the easier questions are answered, answers (18) the more difficult ones will usually begin to (19) into consciousness. It is often (20) a question of waiting for recall to come to the memory.

单选题A factory that makes uranium fuel for nuclear reactors had a spill so bad it kept the plant closed for seven months last year and became one of only three events in all of 2006 serious enough for the Nuclear Regulatory Commission to include in an annual report to Congress. After an investigation, the commission changed the terms of the factory's license and said the public had 20 days to request a hearing on the changes. But no member of the public ever did. In fact, no member of the public could find out about the changes. The document describing them, including the notice of hearing rights for anyone who felt adversely affected, was stamped "official use only," meaning that it was not publicly accessible. The agency would not even have told Congress which factory was involved were it not for the efforts of Gregory B. Jaczko, one of the five commissioners. Mr. Jaczko identified the company, Nuclear Fuel Services of Erwin, Tenn., in a memorandum that became part of the public record. His memorandum said other public documents would allow an informed person to deduce that the factory belonged to Nuclear Fuel Services. Such secrecy by the Nuclear Regulatory Commission is now coming under attack by influential members of Congress. These lawmakers argue that the agency is withholding numerous documents about nuclear facilities in the name of national security, but that many with-held documents are not sensitive. The lawmakers say the agency must rebalance its penchant for secrecy with the public's right to participate in the licensing process and its right to know about potential hazards. The agency, the congressmen said, "has removed hundreds of innocuous documents relating to the N.F.S. plant from public view." With a resurgence of nuclear plant construction expected after a 30-year hiatus, agency officials say frequently that they are trying to strike a balance between winning public confidence by regulating openly and protecting sensitive information. A commission spokesman, Scott Burnell, said the "official use only" designation was under review. As laid out by the commission's report to Congress and other sources, the event at the Nuclear Fuel Service factory was discovered when a supervisor saw a yellow liquid dribbling under a door and into a hallway. Workers had previously described a yellow liquid in a "glove box," a sealed container with gloves built into the sides to allow a technician to manipulate objects inside, but managers had decided it was ordinary uranium. In fact, it was highly enriched uranium that had been declared surplus from the weapons inventory of the Energy Department and sent to the plant to be diluted to a strength appropriate for a civilian reactor. If the material had gone critical, "it is likely that at least one worker would have received an exposure high enough to cause acute health effects or death," the commission said. Generally, the Nuclear Regulatory Commission does describe nuclear incidents and changes in licenses. But in 2004, according to the committee's letter, the Office of Naval Reators, part of the Energy Department, reached an agreement with the commission that any correspondence with Nuclear Fuel Services would be marked "official use only./

单选题In October 2002, Goldman Sachs and Deutsche Bank 1 a new electronic market (www.gs.com/econderivs/) for economic indices that 2 substantial economic risks, such as nonfarm payroll ( a measure of job availability) and retail sales. This new market was made possible by a 3 rating technology, developed by Longitude, a New York company providing software for financial markets, 4 the Parimutuel Digital Call Auction. This is "digital" 5 of a digital option : ie, it pays out only if an underlying index lies in a narrow, discrete range. In effect, Longitude has created a horse race, where each "horse" wins if and 6 the specified index falls in a specified range. By creating horses for every possible 7 of the index, and allowing people to bet 8 any number of runners, the company has produced a liquid integrated electronic market for a wide array of options on economic indices. Ten years ago it was 9 impossible to make use of electronic information about home values. Now, mortgage lenders have online automated valuation models that allow them to estimate values and to 10 the risk in their portfolios. This has led to a proliferation of types of home loan, some of 11 have improved risk-management characteristics. We are also beginning to see new kinds of 12 for homes, which will make it possible to protect the value of 13 ,for most people, is the single most important 14 of their wealth. The Yale University-Neighbourhood Reinvestment Corporation programme, 15 last year in the city of Syracuse, in New York state, may be a model for home-equity insurance policies that 16 sophisticated economic indices of house prices to define the 17 of the policy. Electronic futures markets that are based on econometric indices of house prices by city, already begun by City Index and IG Index in Britain and now 18 developed in the United States, will enable home-equity insurers to hedge the risks that they acquire by writing these policies. These examples are not impressive successes yet. But they 19 as early precursors of a technology that should one day help us to deal with the massive risks of inequality that 20 will beset us in coming years.

单选题A rare provision in San Francisco's business tax code that taxes companies when employees cash in their stock options has caused a stir in this hotbed of fledgling tech companies. Remarkably, few companies even knew about the tax, which has been in effect for seven years. But since city officials offered Twitter a payroll-tax break as an incentive for it to remain in San Francisco (the company is considered likely to go public soon), the stock-option provision has suddenly come under intense scrutiny. A number of other booming companies, including Zings, the maker of online games and one of the city's fastest-growing firms, have threatened to leave the city unless they receive similar payroll-tax exemptions before going public. Unlike most cities, San Francisco generates most of its business tax revenue through a payroll tax. The Twitter exemption bill, which will be considered by the full Board of Supervisors on April 5, would freeze payroll taxes for six years along a strip of Market Street—where Twitter is set to relocate—and several square blocks in the Tenderloin neighborhood. Twitter executives had been concerned because since 2004 the city's payroll tax code has counted stock options granted to employees as compensation, which is taxed at 1.5 percent. If Twitter goes public in San Francisco and a large number of workers exercise their options, the city would tax the company on its employees' stock gains—a bill likely to amount to tens of millions of dollars. "Twitter could be looking at a significantly larger payroll tax liability if and when it goes public," said Ted Egan, the chief economist in San Francisco's controller's office. Because of the dearth of I. P. O. 's inside the city limits in the last decade, the stockoption tax has gone under radar until now. Businesses, city officials and even seasoned tax lawyers are confounded. "Nobody ever talked about this because nobody's really tested these issues before," said Thomas H. Steele, a partner in Morrison & Foerster's San Francisco office, specializing in state and local tax. He said that his clients began calling him this week to ask about the tax's ramifications. "A Pandora's box has already been opened," said Supervisor Ross Mirkarimi, a member of the Board of Supervisors' budget and finance committee, who has expressed concern about tailoring legislation for one company. "We've been going about this the wrong way," he said. The recent confusion has added impetus to calls for comprehensive business tax reform by David Chiu, the board president. "The stock option problem is real," Mr. Chiu said. "We have to address it in a fair and responsible way. /

单选题Elections often tell you more about what people are against than what they are for. So it is with the European ones that took place last week in all 25 European Union member countries. These elections, widely trumpeted as the world's biggest-ever multinational democratic vote, were fought for the most part as 25 separate national contests, which makes it tricky to pick out many common themes. But the strongest are undoubtedly negative. Europe's voters are angry and disillusioned—and they have demonstrated their anger and disillusion in three main ways. The most obvious was by abstaining. The average overall turnout was just over 45%, by some margin the lowest ever recorded for elections to the European Parliament. And that average disguises some big variations: Italy, for example, notched up over 70o//00, but Sweden managed only 37%. Most depressing of all, at least to believers in the European project, was the extremely low vote in many of the new member countries from central Europe, which accounted for the whole of the fall in turnout since 1999. In the biggest, Poland, only just over a fifth of the electorate turned out to vote. Only a year ago, central Europeans voted in large numbers to join the EU, which they did on May 1st. That they abstained in such large numbers in the European elections points to early disillusion with the European Union—as well as to a widespread feeling, shared in the old member countries as well, that the European Parliament does not matter. Disillusion with Europe was also a big factor in the second way in which voters protested, which was by supporting a ragbag of populist, nationalist and explicitly anti-EU parties. These ranged from the 16% who backed the UK Independence Party, whose declared policy is to withdraw from the EU and whose leaders see their mission as "wrecking" the European Parliament, to the 14% who voted for Sweden's Junelist, and the 27% of Poles who backed one of two anti-EU parties, the League of Catholic Families and Self-defense. These results have returned many more Eurosceptics and trouble-makers to the parliament, on some measures, over a quarter of the new MEPS will belong to the "awkward squad". That is not a bad thing, however, for it will make the parliament more representative of European public opinion. But it is the third target of European voters' ire that is perhaps the most immediately significant: the fact that, in many EU countries, old and new, they chose to vote heavily against their own governments. This anti-incumbent vote was strong almost everywhere, but it was most pronounced in Britain, the Czech Republic, Germany, Poland and Sweden. The leaders of all the four biggest European Union countries, Tony Blair in Britain, Jacques Chirac in France, Gerhard Schroder in Germany and Silvio Berlusconi in Italy, were each given a bloody nose by their voters. The big question now is how Europe's leaders should respond to this. By a sublime (or terrible) coincidence, soon after the elections, and just as The Economist was going to press, they were gathering in Brussels for a crucial summit, at which they are due to agree a new constitutional treaty for the EU and to select a new president for the European Commission. Going into the meeting, most EU heads of government seemed determined to press ahead with this agenda regardless of the European elections—even though the atmosphere after the results may make it harder for them to strike deals.

单选题 College sports in the United States are a huge deal. Almost all major American universities have football, baseball, basketball and hockey programs, and{{U}} {{U}} 1 {{/U}} {{/U}}millions of dollars each year to sports. Most of them earn millions{{U}} {{U}} 2 {{/U}} {{/U}}as well, in television revenues, sponsorships. They also benefit{{U}} {{U}} 3 {{/U}} {{/U}}from the added publicity they get via their teams. Big-name universities{{U}} {{U}} 4 {{/U}} {{/U}}each other in the most popular sports. Football games at Michigan regularly{{U}} {{U}} 5 {{/U}} {{/U}}crowds of over 20, 000. Basketball’s national collegiate championship game is a TV{{U}} {{U}} 6 {{/U}} {{/U}}on a par with any other sporting event in the United States,{{U}} {{U}} 7 {{/U}} {{/U}}perhaps the Super Bowl itself. At any given time during fall or winter one can{{U}} {{U}} 8 {{/U}} {{/U}}one’s TV set and see the top athletic programs — from schools like Michigan, UCLA, Duke and Stanford —{{U}} {{U}} 9 {{/U}} {{/U}}in front of packed houses and national TV audiences. The athletes themselves are{{U}} {{U}} 10 {{/U}} {{/U}}and provided with scholarships. College coaches identify{{U}} {{U}} 11 {{/U}} {{/U}}teenagers and then go into high schools to{{U}} {{U}} 12 {{/U}} {{/U}}the country’s best players to attend their universities. There are strict rules about{{U}} {{U}} 13 {{/U}} {{/U}}coaches can recruit — no recruiting calls after 9 p. m., only one official visit to a campus — but they are often bent and sometimes{{U}} {{U}} 14 {{/U}} {{/U}}. Top college football programs{{U}} {{U}} 15 {{/U}} {{/U}}scholarships to 20 or 30 players each year, and those student-athletes, when they arrive{{U}} {{U}} 16 {{/U}} {{/U}}campus, receive free housing, tuition, meals, books, etc. In return, the players{{U}} {{U}} 17 {{/U}} {{/U}}the program in their sport. Football players at top colleges{{U}} {{U}} 18 {{/U}} {{/U}}two hours a day, four days a week from January to April. In summer, it’s back to strength and agility training four days a week until mid-August, when camp{{U}} {{U}} 19 {{/U}} {{/U}}and preparation for the opening of the September-to-December season begins{{U}} {{U}} 20 {{/U}} {{/U}}. During the season, practices last two or three hours a day from Tuesday to Friday. Saturday is game day. Mondays are an officially mandated day of rest.

单选题{{B}}Text 4{{/B}} It vanished in 2002, a result of a bad fall. As my neurosurgeon explained, when my head hit the ground, my brain sloshed around, which smashed delicate nerve endings in my olfactory system. Maybe they'll repair themselves, she said (in what struck me as much too casual a tone ), and maybe they won't, If I had to lose something, it might as well have been smell; at least nothing about my personality or my memory had changed, as can happen with head trauma. So it seemed almost churlish to feel, as the months went on, so devastated by this particular loss. But I was heartbroken. My sense of smell was always something I took pleasure in. Without scent, I felt as ff I were walking around the city without my contact lenses, dealing with people while wearing earplugs, moving through something sticky and thick. The sharpness of things, their specificity, diminished. I couldn't even tell when the milk had gone bad. Oddly, my sense of taste remained perfectly fine, but I was still nervous about opening a carton of yogurt without having someone nearby to sniff it for me. I had been stripped of the sense we all use, often without realizing it, to negotiate the world, to know which things are safe and which are dangerous. After nearly a year, I talked to a colleague savvying about neuro-science, who suggested I try to retrain my sense of smell on the assumption that the nerve endings had repaired themselves but that something was still broken along the pathway from nose to brain, where odor molecules activate olfactory receptors (the subject of this year's Nobel-winning research) . Her advice was to expose myself to strong, distinctive fragrances, asking the person I was with to tell me exactly what I was smelling even if I wasn't conscious of smelling anything at all. I began sticking my nose into everything that seemed likely to have a scent-the cumin in the spice cabinet, freshly ground coffee, red wine. I interrupted friends midsentence if we happened to be walking past a pizza place or a garbage truck and asked, stupidly, "What are you smelling now?" Slowly, the smell therapy started to work. At first, distressingly, all I could smell were unnatural scents: dandruff shampoo, furniture polish, a cloud of after-shave from a stocky young man. The first time I smelled cut grass again, in the small park near the American Museum of Natural History, was almost exactly two years after my fall. It made me cry. The tears embarrassed me, but cut grass is one of those fragrances that transport me directly to the landscape of childhood. And that's what I had been missing, really, and why getting back my sense of smell was so precious: a visceral connection to the person I used to be.

单选题The attitude of those who are "barking up Se wrong tree" towards the primacy of US in the 21st century seems to be ______.

单选题The word "customized" (Lines 3～4, Paragraph 5) can best be substituted by

单选题It can be inferred that eBay

单选题Sleep is a funny thing. We' re taught that we should get seven or eight hours a night, but a lot of us get by just fine on less, and some of us actually sleep too much. A study out of the University of Buffalo last month reported that people who routinely sleep more than eight hours a day and are still tired are nearly three times as likely to die of stroke—probably as a result of an underlying disorder that keeps them from snoozing soundly. Doctors have their own special sleep problems. Residents are famously sleep deprived. When I was training to become a doctor, it was not unusual to work 40 hours in a row without rest. Most of us took it in stride, confident we could still deliver the highest quality of medical care. Maybe we shouldn't have been so sure of ourselves. An article in the Journal of the American Medical Association points out that in the morning after 24 hours of sleeplessness, a person's motor performance is comparable to that of someone who is legally intoxicated. Curiously, surgeons who believe that operating under the influence is grounds for dismissal often don't think twice about operating without enough sleep. "I could tell you horror stories," says Jaya Agrawal, president of the American Medical Student Association, which runs a website where residents can post anonymous anecdotes. Some are terrifying. "I was operating after being up for over 36 hours, "one writes." I literally fell asleep standing up and nearly face planted into the wound." "Practically every surgical resident I know has fallen asleep at the wheel driving home from work, "writes another." I know of three who have hit parked cars. Another hit a convenience store on the roadside, going [105km/h]." "Your own patients have become the enemy," writes a third," because they are the one thing that stands between you and a few hours of sleep." Agrawal's organization is supporting the Patient and Physician Safety and Protection Act of 2001, introduced last November by Representative John Conyers Jr. of Michigan. Its key provisions, modeled on New York State's regulations, include an 80-hour workweek and a 24hour work-shift limit. Most doctors, however, resist such interference. Dr. Charles Binkley, a senior surgery resident at the University of Michigan, agrees that something needs to be done but believes" doctors should be bound by their conscience, not by the government." The U. S. controls the hours of pilots and truck drivers. But until such a system is in place for doctors, patients are on their own. If you're worried about the people treating you, you should feel free to ask how many hours of sleep they have had. Doctors, for their part, have to give up their pose of infallibility and get the rest they need.

单选题Every second in the United States alone, more than 250 animals are slaughtered for food, adding up to more than 8 billion animals each year. Reducing the amount of meat in one’s diet is nutritionally, environmentally, and ethically beneficial. People who eat meat usually have weaker immune systems compared to those of vegetarians. Meat has been directly linked to diabetes, obesity, arthritis, and many other illnesses. Furthermore, meat-eaters are at a higher risk for diseases, including cancer, and they are more likely to die from these diseases. Critics say that a meatless diet does not provide enough nutrients, especially protein and iron. Actually, according to A Teen’s Guide to Going Vegetarian, by Judy Krizmanic, protein is found in almost every food, and iron appears in many vegetables. Getting enough nutrients in a meat-reduced diet should not be difficult. A 1988 study found that some of the highest pesticide residues appear in meat and eggs. Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten. In fact, the opposite is true. More than 80% of the corn and 95% of the oats grown in the US are fed to livestock. The world’s cattle alone consume enough food to equal the caloric needs of 8.7 billion people, more than the entire human population. One half of the water used in the Unites States also goes to livestock; 2.50 gallons of water produces only 1 pound of beef. If people eat less meat and more plants, the amount of available food will increase. Many people become vegetarians because they feel that eating animals is unethical. 90% of these animals are raised in confinement. Chickens and other birds have only about half. a square foot of space each, and since they are raised so close together, a hot blade is used to cut off their beaks to prevent them from pecking each other to death. Likewise, pigs that are repressed will bite each other’s tails, so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways. Even a slight reduction in meat intake is better than nothing at all. Consuming less meat is beneficial to the health of animals, the health of people, and to the health of the world.

单选题On Mar. 14, when Wal-Mart Stores Inc. announced its first foray into Japan, the Bentonville (Ark.) retailing giant placed a big bet that it could succeed where countless other foreign companies have failed. In the past five years, a number of famous Western brands have been forced to close up shop after failing to catch on in Japan, one of the world's largest--but most variable--consumer markets. May Wal-Mart make a go of it where others have stumbled? One good sign is that the mass marketer is not rushing in blindly. It has taken an initial 6.1% stake in ailing food-and-clothing chain Seiyu Ltd. , which it can raise to a controlling 33.4% by yearend and to 66.7% by 2007. That gives Wal-Mart time to revise its strategy--or run for the exits. The question is whether Wal-Mart can apply the lessons it has learned in other parts of Asia to Japan. This, after all, is a nation of notoriously finicky consumers--who have become even more so since Japan slipped into a decade-long slump. How will Wal-Mart bring to bear its legendary cost-cutting savvy in a market already affected by falling prices? Analysts are understandably skeptical. "It is uncertain whether Wal-Mart's business models will be effective in Japan," Standard & Poor's said in a Mar. 18 report. Much depends on whether Seiyu turns out to be a good partner. The 39-year-old retailer is a member of the reputed Seibu Saison retail group that fell on hard times in the early '90s. It also has deep ties to trading house Sumitomo Corp. , which will take a 15% stake in the venture with Wal-Mart. Perhaps the best thing that can be said of Seiyu's 400-odd stores is that they're not as deeply troubled as other local retailers. Still, there's a gaping chasm between the two corporate cultures. "We've never been known for cheap everyday pricing," says a Seiyu spokesman. Another potential problem is Sumitomo, which may not want to lean on suppliers to the extent that Wal-Mart routinely does. The clock is ticking. Wal-Mart executives say they need several months to "study" the deal with Seiyu before acting on it, but in the meantime a new wave of hyper-competitive Japanese and foreign rivals are carving up the market. If Wal-Mart succeeds, it will reduce its reliance on its home market even further and--who knows? --it may even revolutionize Japanese retailing in the same way it has in the U. S.

单选题Despite decades of scientific research, no one yet knows how much damage human activity is doing to the environment. Humans are thought to be responsible for a whole host of environmental problems, ranging from global warming to ozone depletion. What is not in doubt, however, is the devastating effect humans are having on the animal and plant life of the planet. Currently, an estimated 50,000 species become extinct every year. If this carries on, the impact on all living creatures is likely to be profound, says Dr. Nick Middleton, a geographer at Oxford University. "All species depend in some way on each other to survive. And the danger is that, if you remove one species from this very complex web of interrelationships, you have very little idea about the knock-on effects of other extinctions." Complicating matters is the fact that there are no obvious solutions to the problem. Unlike global warming and ozone depletion—which, if the political will was there, could be reduced by cutting gas emissions— preserving biodiversity remains an intractable problem. The latest idea is "sustainable management", which is seen as a practical and economical way of protecting species from extinction. This means humans should be able to use any species of animal or plant for their benefit, provided enough individuals of that species are left alive to ensure its continued existence. For instance, instead of depending on largely ineffective laws against poaching, it gives local people a good economic reason to preserve plants and animals. In Zimbabwe, there is a sustainable management project elephants. Foreign tourists pay large sums of money to kill these animals for sport. This money is then given to the inhabitants of the area where the hunting takes place. In theory, locals will be encouraged to protect elephants, instead of poaching them—or allowing others to poach them—because of the economic benefit involved. This sounds like a sensible strategy, but it remains to be seen whether it will work. With corruption endemic in many developing countries, some observers are skeptical that the money will actually reach the people it is intended for. Others wonder how effective the locals will be at stopping poachers. There are also questions about whether sustainable management is practical when it comes to protecting areas of great-bio-diversity such as the world"s tropical forests. In theory, the principle should be the same as with elephants—allow logging companies to cut down a certain number of trees, but not so many as to completely destroy the forest. Sustainable management of forests requires controls on the number of trees which are cut down, as well as investment in replacing them. But because almost all tropical forests are located in countries which desperately need revenue from logging, there are few regulations to do this. Moreover, unrestricted logging is so much more profitable that wood prices from managed forests would cost up to five times more—an increase that consumers, no matter how "green", are unlikely to pay. For these reasons, sustainable management of tropical forests is unlikely to become widespread in the near future. This is disheartening news. It"s estimated these forests contain anything from 50 to 90 percent of all animal and plant species on Earth. In one study of a five-square-kilometer area of rain forest in Peru, for instance, scientists counted 1,300 species of butterfly and 600 species of bird. In the entire continental United States, only 400 species of butterfly and 700 species of bird have been recorded. Scientist Professor Norman Myers sees this situation as a gigantic "experiment we"re conducting with our planet". "We don"t know what the outcome will be. If we make a mess of it, we can"t move to another planet... It"s a case of one planet, one experiment."

单选题At his research clinic in Dallas, psychologist Jasper Smits is working on an unorthodox treatment for anxiety and mood disorders, including depression. It is not yet widely accepted, but his treatment is free and has no side effects. Compare that with antidepressant drugs, which cost Americans $10 billion each year and have many common side effects: sleep disturbances, nausea, tremors, changes in body weight. This intriguing new treatment? It's nothing more than exercise. In 1999, Duke University researchers demonstrated in a randomized controlled trial that depressed adults who participated in an aerobic-exercise plan improved as much as those treated with medication. Subsequent trials have repeated these results, showing again and again that patients who follow aerobic-exercise plans see improvement in their depression comparable to that of those treated with medication, and that both groups do better than patients given only a placebo. But exercise trials on the whole have been small, and most have run for only a few weeks; some are plagued by methodological problems. Still, despite limited data, the trials all seem to point in the same direction: exercise boosts mood. It not only relieves depressive symptoms but also prevents them from recurring. Molecular biologists and neurologists have begun to show that exercise may alter brain chemistry in much the same way that antidepressant drugs do—regulating the key neurotransmitters serotonin and norepinephrine. At the University of Georgia, neuroscience professor Philip Holmes and his colleagues have shown that over the course of several weeks, exercise can switch on certain genes that increase the brain's level of galanin, a peptide neurotransmitter that appears to tone down the body's stress response by regulating another brain chemical, norepinephrine. The result is that exercise primes the brain to show less stress in response to new stimuli. In the case of lab rats and mice, those stimuli include being plunged into very cold water or being suspended by the tail. And while those are not exactly problems most people face, the thinking is that the human neurochemical response may well react similarly, with exercise leaving our brain less susceptible to stress in the face of harmless but unexpected events, like missing an appointment or getting a parking ticket. A little bit of mental strain and excess stimulation from exercise, in other words, may help us to keep day-to-day problems in perspective. Researchers wonder whether this interaction between body and brain may, evolutionarily speaking, be unchangeable. "It occurs to us that exercise is the more normal or natural condition and that being sedentary is really the abnormal situation, "Holmes says.

单选题{{B}}Text 3{{/B}} George Bernard Shaw(1856—1950)was born in Dublin, Ireland. At the age of 14, after graduating from middle school, Shaw was put into a job as clerk in a land agent's office. At 20 he went to London where he remained jobless for 9 years, devoting much time to self-education. Meantime, Shaw took an active part in the socialist movement. A contemporary of Shaw's thus wrote of him: "I used to be a daily frequenter of the British Museum Reading Room. Even more assiduous in his attendance was a young man. ...My curiosity was piqued by the odd conjunction of his subjects of research. Day after day for weeks he had before him two books—Karl Marx's 'Das Kapital' (in French), and an orchestral score(管弦乐乐谱) of 'Tristan and Isolde'." Though Shaw admitted Marx's great influence on him, he failed to grasp the necessity of a revolutionary reconstruction of the world. A strong influence was exercised on Shaw by the Fabian society, the English reformist organization. In the early period of his literary career, Shaw wrote some novels, "An Unsocial Socialist" and others, in which he developed the traditions of critical realism, bitterly criticizing the stupidity, snobbishness and petty tyranny of the middle class. In the nineties Shaw turned to the theatre, first working as a dramatic critic, then writing plays for the stage. His role in the development of dramaturgy is very great. Shaw was an enemy of "art for art's sake". He wrote, "for art's sake I will not face the toil of writing a sentence." He used the stage to criticize the evils of capitalism. He wrote 51 plays in total, the important ones including "Widower's Houses", "Saint Joan" and "The Apple Cart". In his plays Shaw laid bare the gross injustice and utter inhumanity of the bourgeois society. This he achieved not so much by the structures of plots in his plays as by the brilliant dialogues between the characters. His exposure of capitalist society is very significant and it places Shaw among the most important representatives of critical realism in modern English literature.

单选题The logical organization of the first paragraph of the text is that