单选题She came across three children sleeping under a bridge.

单选题When I heard the noise in the next room, I couldn’t resist having a Upeep/U.

单选题It seemed incredible that he had been there a week already.

单选题John has always remained loyal to his family and friends. ______

单选题We almost ran into a Rolls-Royce that pulled out in front of us without signaling.A. overtook B. hit C. passed D. found

单选题The high-speed trains can have a major {{U}}impact{{/U}} on travel preferences. A. force B. influence C. surprise D. power

单选题Racing the clock every day is such an exhausting effort that when I actually have a few free moments, I tend to {{U}}collapse{{/U}}. A. fall down B. fall in C. fall out D. fall behind

单选题The chairman of the board {{U}}imposed on{{/U}} me the unpleasant job of dismissing good workers the firm can no longer afford to employ. A. compelled B. posed C. pressed D. tempted

单选题He might have thought it was all right to marry a woman ten years older than him, but {{U}}in the opinion of{{/U}} his friends he was crazy.

单选题The indecisive man was readily persuaded to change his mind again.

单选题The Great Depression of the 1930s was the most momentous(重大的，重要的)economic event of the 20th century. It was a direct cause of World War II, having fed the Nazis' rise in Germany. It inspired a new American welfare system as a response to mass misery. Everywhere, it discredited unsupervised capitalism. Given today's economic crisis, our renewed fascination with the Depression is natural. But we ought to be cautious in stretching the parallels too far. It's worth recalling how exceptional the Depression was. As Liaquat Ahamed writes in his engrossing (引人入胜的，使人着迷的) "Lords of Finance": "During a three -year period, real GDP [ gross domestic product ] in the major economies fell by over 25 percent, a quarter of the adult male population was thrown out of work...The economic turmoil created hardships in every corner of the globe, from the prairies of Canada to the crowded cities of Asia. " What does the author mean by" exceptional" ?A. The Depression was different from other economic depressions.B. No other economic crises are comparable to the Depression in terms of consequences.C. There are no parallels between the present economic crisis and the Depression.D. The fascination aroused by the Depression lasted all the way to today.

单选题 阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。 {{B}}Energy for living things{{/B}} We have seen that all living things must take in and use energy to maintain their bodies, to grow, to obtain more energy, and to reproduce. Since the evolutionarily successful individual is one that leaves descendants in future generations, natural selection favours those individuals that can channel the most energy into producing offspring. The use of energy in other activities such as feeding, fighting, or growing is selectively advantageous only so far as these activities result in the organism's accumulating more energy to produce offspring. Each individual has an energy income—all of the energy that it acquires during its lifetime. It also has an energy budget, its allotment of different amounts of energy to various activities. The most evolutionarily successful organisms are those which are most effective in conversion of energy to offspring. This does not mean that organisms use all their energy directly to produce offspring. For example, suppose that a tree converts some of its energy into growing a large root system, the energy thus spent cannot be used to produce offspring. Its large root system may enable the tree to obtain a great deal of water and minerals from the soil and so to produce more leaves, another diversion of energy away from the production of offspring. However, all of the leaves that the tree produces may then enable the tree to synthesize more food than it would have otherwise, and so allow it to make up for some of its previous energy expenditure by producing more offspring in the end. Thus organisms make energy investment which may ultimately yield energy gains that can be reinvested in the production of offspring. Sometimes these investments will turn out to be selectively disadvantageous because they postpone production of offspring. If the organism meets an early death, it will never get a chance to reproduce. So any item in an organism's energy budget must have the potential to produce an ultimate productive gain that is equal to the risks involved in diverting energy away from the immediate production of offspring.

单选题A Debate on the English Language A measure declaring English the national language is under intense debate in the United States. The US Senate passed two declarations last week. One calls English the nation's official language and the other says it is the "common and unifying (统一的)" tongue. But Americans found themselves divided on the issue. Since people worldwide know that most Americans speak only English, many can't understand why the issue is so controversial (有争议的). "The discussion is related to fears of immigration issues," says Dick Tucker, a social scientist at Pittsburgh's Carnegie Mellon University. " It's related to a worry about the changing demography (人口统计) of the US. It's a worry about who will continue to have political and economic influence. " In fact, the notion of protecting the language has been kicked around almost since the nation's founding. John Adams lobbied (游说) in 1780 for the creation of a national academy to correct and improve the English language. But his proposal died, since lawmakers saw it as a royalist (保皇主义者) attempt to define personal behavior. Since then, the country hasn't had a national language, but the idea of recognizing the special status of English lived on. The emotions surrounding language resurface (再次浮现) not because people feel comfortable with English. It is more about the discomfort many Americans feel with the new languages, says Walt Wolfram, a professor at North Carolina State University. "Language is never about language," he says. According to the 2000 US Census Bureau report, of 209 million Americans over 18 years old, 172 million speak only English at home. About 37 million speak languages other than English. Among them, 6. 5 million speak poor English and 3. 1 million don't speak English at all.

单选题It is time you settled your differences with your father.

单选题The ice cream cone, the hamburger, and iced tea were all introduced at the 1904 Louisiana Purchase Exposition {{U}}informally{{/U}} known as the St. Louis Fair.

单选题We've seen a marked shift in our approach to the social issues.A. regularB. greatC. clearD. quick

单选题I saw a lark (云雀) rise from the ground and {{U}}soar{{/U}} high into the sky.

单选题The fuel tanks had a capacity of 140 liters.

单选题He is too young to be able to distinguish between right and wrong.

单选题Susan is {{U}}looking for{{/U}} the dictionary, which she lost yesterday.