单选题It is difficult to {{U}}discern{{/U}} the sample that is on the slide unless the microscope is adjusted.

单选题Woman: How are you getting on with your math? Man: I really need to brush up on it. Question: What does the man mean?

单选题Long after the 1998 World Cup was won, disappointed fans were still cursing the disputed refereeing (裁判) decisions that denied victory to their team. A researcher was appointed to study the performance of some top referees. The researcher organized an experimental tournament (杆锦标赛) involving four youth teams. Each match lasted an hour, divided into three periods of 20 minutes during which different referees were in charge. Observers noted down the referees errors, of which there were 61 over the tournament. Converted to a standard match of 90 minutes, each referee made almost 23 mistakes, a remarkably high number. The researcher then studied the videotapes to analyze the matches in detail. Surprisingly, he found that errors were more likely when the referees were close to the incident. When the officials got it right, they were, on average, 17 meters away from the action. The average distance in the case of errors was 12 meters. The research shows the optimum (最佳的) distance is about 20 meters. There also seemed to be an optimum speed. Correct decisions came when the referees were moving at a speed of about 2 meters per second. The average speed for errors was 4 meters per second. If FIFA, football's international ruling body, wants to improve the standard of refereeing at the next World Cup, it should encourage referees to keep their eyes on the action from a distance, rather than rushing to keep up with the ball, the researcher argues. He also says that FIFA's insistence that referees should retire at age 35 may be misguided. If keeping up with the action is not so important, their physical condition is less critical.

单选题Parents in China still Ucherish/U the notion that the only way out for their children is to enter college.

单选题A: Let's stop here. We've driven enough for a whole day.B: ______

单选题The violent ______ of his youth reappeared and was directed not only at the army, but at his wife as well.

单选题During the rainy season the Mississippi River may carry away hundreds of acres of valuable topsoil from one area and arbitrarily deposit in another.

单选题On (each) side of the highway (was) hundreds of billboards (advertising) everything from modem motels to roadside stands that sell (fresh fruit) and bedspreads.A. eachB. wasC. advertisingD. fresh fruit

单选题The El Nino has ______ affected the regional weather and temperature over much of the tropics, sub-tropics and some mid-latitude areas.

单选题Man: I hope we can see everything from way up here. Woman: Don't worry. You can watch the whole game no matter where you are. Question: What kind of place are the speakers probably at?

单选题{{B}}Passage Four{{/B}} Faith in medicine runs deep in America. We spend more per person on health care than any other nation. Whether we eat too much or exercise too little, whether we're turning gray or feeling blue, we look to some pill or procedure to make us better. We assume that devoting ever more dollars to medicine will bring us longer, healthier lives. But there is mounting evidence that each new dollar we devote to the current health care system brings small and diminishing returns to public health. Today the United States spends more than $4 500 per person per year on health care. Costa Rica spends less than $ 300. Yet life expectancy at birth is nearly identical in both countries. Despite the highly publicized" longevity revolution," life expectancy among the elderly in the United States is hardly improving. Yes, we are an aging society, but primarily because of falling birthrates. Younger Americans, meanwhile, are far more likely to be disabled than they were 20 years ago. Most affected are people in their thirties, whose disability rates increased by nearly 130 percent, due primarily to overweight. Why has our huge investment in health care left us so unhealthy? Partly it is because so many promised" miracle cures," from Interferon to gene therapies, have proven to be ineffective or even dangerous. Partly it's because health care dollars are so concentrated on the terminally ill and the very old that even when medical interventions "work,'" the gains to average life expectancy are small. And partly it is because of medical errors and adverse reaction to prescription drugs, which cause more deaths than motor vehicle accidents, breast cancer or AIDS. Each year roughly 200 000 seniors suffer fatal or life-threatening "adverse drug events" due to improper drug use or drug interaction. Why don't Americans live any longer than Costa Ricans? Overwhelmingly, it's because of differences in behavior. Americans exercise less, eat more, drive more, smoke more, and lead more socially isolated lives. Even at its best, modern medicine can do little to promote productive aging, because by the time most people come in contact with it their bodies are already compromised by stress, indulgent habits, environmental dangers and injuries.

单选题We have no time to lose. Let's ______ on the task before us.

单选题It is generally believed that no prisoner would readily give a fellow prisoner away.

单选题It may look like just another playgroup, but a unique educational center in Manhattan is really giving babies something to talk about. "It's a school to teach languages to babies and young children with games, songs--some of the classes also have arts and crafts," said Francois Thibaut, the founder of the Language Workshop for Children, a place where babies become bilingual. Children as young as few months are exposed to French and Spanish before many of them can even speak English. Educators use special songs and visual (视觉的) aids to ensure that when a child is ready to talk, the languages will not be so foreign. "Children have a unique capacity to learn many languages at the same time," said Thibaut. "Already at nine months, a child can tell the differences between the sounds he or she has heard since birth and the sounds he or she has never heard yet." Thibaut says the best time to expose children to language is from birth to 3 years old. For the last 30 years, the school has been using what it calls the Thibarut Technique, a system that combines language lessons with child's play. "I always wanted to learn Spanish, but by the time I got to high school it was too late to pick it up and speak fluently," said Marc Lazare, who enrolled his son at the school. "I figured at this age, two, it's a perfect time for him to learn." Aside from learning a language, the kids also gain a tremendous sense of confidence. One young student boasted that aside from French, she can speak five languages (though that included "monkey" and "lion"). The school gives children the tools to communicate, and sometimes that gives them an advantage over their parents. "I think they sometimes speak French when they think I won't understand them," said parent Foster Gibbons. Depending on the age group, classes run from 45 minute up to 2 hours. Even when students are not in class, the program is designed to make sure the learning continues at home. Tapes and books are included so kids can practice on their own.

单选题A: You are washing your car even on vacation. It makes me feel guilty. B: ______.

单选题The government has a policy of fostering the public awareness of the dangers in smoking.

单选题Woman: Some people know a lot more than they tell.Man: Unfortunately the reverse is also true.Question: What does the man imply?A. Some people tend to conceal the truth.B. Some people are prone to tell lies.C. Some people are dishonest.D. Some people tell a lot more than they know.

单选题There is no direct flight, so I flew to Pittsburgh ______ Philadelphi

单选题{{B}}Passage Two{{/B}} Ben Mickle, Matt Edwards, and Kshipra Bhawalkar looked as though they had just emerged from a minor auto wreck. The members of Duke University's computer programming team had solved only one problem in the world finals of the International Collegiate Programming Contest in San Antonio on Apr. 12. The winning team, from Saratov State University in Russia, solved six puzzles over the course of the grueling five-hour contest. Afterward, Duke coach Owen Astrachan tried to cheer up his team by pointing out that they were among "the best of the best" student programmers in the world. Edwards, 20, still distraught, couldn't resist a self-deprecating dig: "We're the worst of the best of the best." Duke wasn't the only U.S. school to be skunked (因得分不够而被淘汰)at the prestigious computing contest. Of the home teams, only Massachusetts Institute of Technology ranked among the 12 highest finishers. Most top spots were seized by teams from Eastern Europe and Asia. Until the late 1990s, U. S. teams dominated these contests. But the tide has turned. Last year not one was in the top dozen. The poor showings should serve as a wake-up call for government, Industry, and educators. The output of American computer science programs is plummeting, even while that of Eastern European and Asian schools is rising. China and India, the new global tech powerhouses, are fueled by 900 000 engineering graduates of all types each year, more than triple the number of U.S. grads. Computer science is a key subset of engineering. "If our talent base weakens, our lead in technology, business ,and economics will fade faster than any of us can imagine," warns Richard Florida, a professor at George Mason University. Software programmers are the seed corn of the Information Economy, yet America isn't producing enough. The Labor Dept. forecasts that "computer/math scientist" jobs, which include programming, will increase by 40%, from 2.5 million in 2002 to 3.5 million in 2012. Colleges aren't keeping up with demand. A 2005 survey of freshmen showed that just 1.1% planned to major in computer science, down from 3.7% in 2000. For young Americans, a computing career isn't the draw even a few years ago. Never mind that experienced programmers make upwards of $100000 and that the brainiest of them are the objects of heated bidding wars. Students fear that if they become programmers they'll lose their jobs to counterparts in India and China. Analysts say those worries are overblown: Programmers with leadership and business skills will do just fine. But the message isn't getting through. Then there's the thrill factor, or lack thereof. Given the opportunity to make a mint on Wall Street or land a comfortable academic job, many math and science students are turning away from software. "I couldn't really get excited about sitting in front of a computer and just writing programs," says Duke junior Brandon Levin, who has taken computer courses but is majoring in math and plans a career in academia.