单选题Photojournalist Margaret Bourke-White became famous for her coverage of significant events during the Second World War.

单选题The book made a great impact on its readers.

单选题It is very late; hence you must go to bed.A. from now onB. laterC. elsewhereD. thus

单选题The Development of Personality Personality is to large extent inherent. A-type parents usually bring A-type offspring. But the environment must also have a profound effect, since if competition is important to the parents, it is likely to become a major factor in the lives of their children. One place where children soak up (浸泡) a characteristic is school, which is, by its very nature, a highly competitive institution. Too many schools adopt the "win at all costs" moral standard and measure their success by sporting achievements. The current passion for making children compete against their classmates or against the clock produces a two-layer system, in which competitive A-types seem in some way better than their B-type fellows. Being too keen to win can have dangerous consequences: Remember that Philippines, the first marathon runner, dropped dead seconds after saying, "Rejoice, We conquer!" By far the worst form of competition in schools is the disproportionate emphasis on examinations. It is a rare school that allows pupils to concentrate on those things they do well. The merits of competition by examination are somewhat questionable, but competition in the certain knowledge of failure is positively harmful. Obviously, it is neither practical nor desirable that all A youngsters change into B"s. The world needs types, and schools have an important duty to try to fit a child"s personality to hide possible future employment. It is top management. If the preoccupation of schools with academic work was lessened, more time might be spent teaching children surer values. Perhaps selection for the caring professions, especially medicine, could be made less by good grades in chemistry and more by such considerations as sensitivity and sympathy. It is surely a mistake to choose our doctors exclusively form A-type stock. B"s are important and should be encouraged.

单选题One Good Reason to Let Smallpox Live It''s now a fair bet that we will never see the total extinction of the smallpox virus. The idea was to cap the glorious achievement of 1980, when smallpox was eradicated in the wild, by destroying the killer virus in the last two labs that are supposed to have it—one in the US and one in Russia. If smallpox had truly gone from the planet, what point was there in keeping these reserves? 【51】 reality, of course, it was naive to 【52】 that everyone would let 【53】 of such a potent potential weapon. Undoubtedly several nations still have 【54】 vials. 【55】 the last" official" stocks of live virus bred mistrust of the US and Russia, 【56】 no obvious gain. Now American researchers have 【57】 an animal model of the human disease, opening the 【58】 for tests on new treatments and vaccines. So once again there''s a good reason to 【59】 the virus—just in 【60】 the disease puts in a reappearance. How do we 【61】 with the mistrust of the US and Russia? 【62】 . Keep the virus 【63】 international auspices in a well-guarded UN laboratory that''s open to all countries. The US will object, of course, just as it rejects a multilateral approach to just about everything. But it doesn''t 【64】 the idea is wrong. If the virus 【65】 useful, then let''s make it the servant of all humanity——not just a part of it. smallpox n. 天花 vial n. 小瓶 auspices n.赞助；支持 cap vt. 结束；覆盖 potent adj. 有效力的；强有力的 mistrust n. 不信任，怀疑

单选题The coral island nations of the Pacific have a long, history of civilization.

单选题Living in different cities, Linda and Lisa are still intimate friends.

单选题Hundreds of years ago cloves were used to Uremedy/U headaches.

单选题This reminds me of lots of things.

单选题It is possible to approach the problem in a different way.

单选题We can no longer {{U}}put up with{{/U}} his actions

单选题Nurses should give reassurance that Usecrecy/U will be maintained.

单选题After supper we usually take a Ustroll/U around the park for about an hour.

单选题He Upondered/U her words thoroughly.

单选题These programmes are of immense value to old people. A. natural B. fatal C. tiny D. enormous

单选题The dominant theme in the music is of tranquility and peacefulness.

单选题This table is strong and durable .

单选题Wind energy has been praised as cost-effective to produce clean energy as well as jobs. That promise, along with new government subsidies (补贴), has helped wind turbines (涡轮机) pop up on hills and fields throughout America. But not every environmentalist is happy about that development. Critics charge that wind-energy development can cause habitat fragmentation-a displacement of a species that can eventually reduce its numbers-as well as the deaths of birds and bats (a species that is especially vulnerable due to its low reproductive rates) that collide with the wind turbines' massive blades. A 2007 study by the National Academy of Sciences puts the number of birds killed each year at about 20,000 to 30,000. That's a low estimate, says Michael Fry of the American Bird Conservancy. According to his group, turbines kill three to 11 birds per megawatt of wind energy they produce. According to critics, wind-energy development may causeA. the deaths of 20,000 to 30,000 birds.B. distinction of many species in the area.C. habitat fragmentation and deaths of birds.D. environment recovery from destruction.

单选题After reading this passages you probably have got the impression that

单选题14 This is not typical of English, but is a feature of the Chinese language. A．particular B．characteristic C．remarkable D．idiomatic