单选题Pele is cited as an example in the second paragraph to illustrate that

单选题Through her portrayal of eight college-educated women in the book, The Group, author Mary McCarthy criticizes an entire period.

单选题{{B}}第一篇{{/B}} {{B}}Pushbike Peril{{/B}} Low speed bicycle crashes can badly injure —or even kill —children if they fall onto the ends of the handlebars so a team of engineers is redesigning the humble handlebar in a bid to make it safer. Kristy Arbogast, a bioengineer at the Children's Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle accidents. "The task was to identify how the injuries occurred and came up with some countermeasures," she says. By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injures. They discovered that most occur when children hit an obstacle at a slow speed, causing them to topple over. To maintain their balance they turn the handlebars through 90 degrees — but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen. The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize the device, which should add only a few dollars to the cost of a bike. "But our task has been one of education because up until now, bicycle manufacturer were unaware of the problem," says Arbogast. The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design. A decision is expected later this year. handlebar n (常用复数) (自行车等的) 车把 abdominal adj. 腹部的 redesign v. 重新设计 bioengineer n. 生物工程师 reconstruct vt. 重建；重构 countermeasure n. 对策 abdomen n. 膜，腹部 momentum n.冲力 handgrip n. 握柄 damping adj. 制动的，减速的，缓冲的 commercialize vt. 使商品化

单选题Preserving Nature for Future Demands for stronger protection for wildlife in Britain sometimes hide the fact that similar needs are felt in the rest of Europe. Studies by the Council of Europe, of which 21 countries are members, have shown that 45 percent of reptile (爬行类的) species and 24 percent of butterflies are in danger of dying out. European concern for wildlife was outlined by Dr. Peter Baum, an expert in the environment and natural resources division of the council, when he spoke at a conference arranged by the administrators of a British national park. The park is one of the few areas in Europe to hold the council"s diploma for nature reserves of the highest quality, and Dr. Peter Baum had come to present it to the park once again. He was afraid that public opinion was turning against national parks, and that those set up in the 1960s and 1970s could not be set up today. But Dr. Baum clearly remained a strong supporter of the view that natural environment needed to be allowed to survive in peace in their own right. "No area could be expected to survive both as a true nature reserve and as a tourist attraction, "he went on. The short-sighted (眼光短浅的) view that reserves had to serve immediate human demands for outdoor recreation should be replaced by full acceptance of their importance as places to preserve nature for the future. "We forget that they are the guarantee of life systems, on which any built-up area ultimately depends," Dr. Bantu went on, "we could manage without most industrial products, but we could not manage without nature. However, our natural environment areas, which are the original parts of our countryside, have shrunk to become mere(纯粹的) islands in a spoiled and highly polluted land mass."

单选题Her novel depicts a futuristic America.

单选题There is a {{U}}plentiful{{/U}} supply of cheap labor in this country. A. steady B. abundant C. additional D. stable

单选题Her work is often very hard and she gets very tired. The work is tedious .

单选题The Anti -Alcohol Campaign Tries in Russia Last week Russian President Dmitry Medvedev kicked off a new anti - alcohol campaign aimed at cutting the nation's per capita consumption of alcohol by nearly a quarter by 2012. Russians currently drink about 18 liters ( 19 quarts) a year, more than double the 8 liters (8.4 quarts) deemed safe by the World Health Organization (WHO). With each additional liter, adds the WHO, men can subtract 11 months from their average life expectancy. The latest move consists of three parts: a media campaign, restrictions on beer consumption, and strict penalties for selling to minors. Russian officials plan to set up more than 500 health centers by the end of the year, complete with Soviet - era tactics like drawings of cirrhosis - stricken livers on their walls. Even with such aggressive measures, it's hardly the most ambitious campaign Russians has ever launched against drinking. Former leader Mikhail Gorbachev got alcohol sales to decline by 60 percent. Three years agom, a group of young Russians organized a sort of vigilante vice squad to single out and shame merchants who sold alcohol to minors. Supported by the Moscow city administration, the Solar Circle movement, as they called themselves, held rallies, and slapped leaflets on the shop doors of guilty establishments. They piqued media interest at first, but the momentum soon fizzled. Some critics say that, while admirable, it hardly addresses the biggest culprit of all : vodka. "The main problem is the availability of hard liquor, "says Aleksandr Nemtsov, a top Russian expert on alcohol policy. Some 70 percent of alcohol consumption in Russia is of the hard stuff, primarily vodka. One attempt, tried in the mid- 1990s ,substituted beer as a less intoxicating non- liquor alternative. Instead. "beer has become a gateway opening the way to alcoholism for teenagers," says Oleg Zykov, a member of the Public Chamber. The earlier people start down that route, the more likely they are to end up grappling with alcoholism problems later. Still, for now, Russians seem to support the government's new approach. As the National Center for the Study of Public Opinion reported last week. 65 percent of the population say they are in favor the new measures—especially those that restrict alcohol sales to those under 21. (Right now, the drinking age is 18. )

单选题 How does Science Proceed? How exactly does science work? How do scientists go about "doing" science? Ordinarily we think science proceeds in a straightforward way. Ideally, scientists make observations, formulate hypotheses, and test those hypotheses by making further observations. When there is difference between what is observed and what is predicted by the hypothesis, the hypothesis is reviewed. Science proceeds in this way, which is a gradual method of finding the best fit between observation and prediction. But this idealized version of how one "does" science is naive. Although science demands proof that observations made by one observer be observable by other observers using the same methods. It is by no means clear that even when confronted with identical phenomena different observers will report identical observations. And it is most certain that even if the same observations are made, the conclusions as to the meaning of the observations frequently differ. The fact is that all of us scientists included, see differently. Variations in human perception are well known and have been studied extensively. Distortions in perceptions are frequently seen among observers, even though they may be in identical settings viewing identical phenomena. A documented misperception from history can be found in the experience of Darwin. His ship, Beagle, after anchoring off the Patagonian coast, sent off a landing party in small rowboats. Amazingly, the Patagonian natives watching from shore were blind to the Beagle, but could easily see the tiny rowboats. They have no prior experience of huge sailing ships, but small rowing vessels were an everyday part of their life. Rowboats fit their model of the world but huge ships did not. Their model determined their perceptions. Our ideas that science proceeds on an utterly objective and straightforward basis ignores the distortions of reality imposed by our own perceptual apparatus. In many cases we see what we have been trained to see, what we are used to seeing. If a subject is fitted with special glasses that are designed to invert the visual field, at first the subject sees everything upside down. After a period of time, as the glasses continue to be worn, a correction is made by our perceptual mechanism and the image is flipped, so that the world once again appears erect.

单选题You could tell from his big ears that he {{U}}took after{{/U}} his father.

单选题People have lived by the River Wensum for at least 2,000 years.

单选题Her first year at school away from home, she suffered {{U}}qualms{{/U}} of homesickness.

单选题Bad food is a source of illness.

单选题Foreign military aid was Uprolonging/U the war.

单选题So in 2006. RealBenefits went commercial. Still tucked under the umbrella of founder Community Catalyst, the sales staff began slowly refocusing its energy on paying customers like hospital chains, governments and school districts rather than the community organizations and nonprofits that had previously peppered its client list. A subscription - based service, RealBenefits charges a fee that ranges from $10,000 for, say, a homeless -services group to six figures on the high end. "Our model was to find large health - care providers who'd be willing to pay because they were actually increasing reimbursements(报销) and minimizing uncompensated safe by using our technology," says CEO Enrique Balaguer. At both ends, low -income families win. Whereas an uninsured patient going to the emergency room once faced a bill for thousands of dollars, now, using RealBenefits, hospital staff can screen him to see if he is qualified to file a claim with Medicaid. One Massachusetts hospital, Baystate Medical Center, reported a 50% increase in the number of Medicaid reimbursements it received in 2006 by using RealBenefits. Nonetheless, RealBenefits was still struggling to expand because of the difficulty of accessing capital. So the firm set out to find a buyer willing to continue its social mission. It eventually settled on Trillealix. a Connecticut - based health - care IT company. The June 2008 deal was worth $ 3 million to $ 4 million, Balaguer says. What change happened after RealBenefits went commercial in 2006?A. It didn't take community organizations as clients any more.B. It started to charge clients for the service it offered.C. Its service would not benefit low -income families.D. It made huge profits and was financially well - of

单选题Which of the following statements is NOT true of the two ferry disasters?

单选题I posilively believe that there's been no mistake.A. rationallyB. reasonablyC. certainlyD. boundly

单选题4 Sometimes it is {{U}}advisable{{/U}} to book hotels in advance.

单选题She stood there．{{U}}trembling{{/U}} with fear.

单选题They have built canals to irrigate the desert.