单选题At first, the company refused to purchase the equipment, but this decision was ______revised.(2008年北京大学考博试题)

单选题As the generations progress, feather length will increase because females do not prefer a specific length tail, but a longer-than-average tall. Eventually tail length will increase to the point______the liability survival is matched by the sexual attractiveness of the trait and an equilibrium will be established.

单选题Plastic bags are useful for holding many kinds of food, ______ their cleanness, toughness and low cost. A. by virtue of B. in addition to C. for the sake of D. as opposed to

单选题The destruction of the Twin Towers in New York City ______ shock and anger not only throughout America but also throughout the whole world. A. enveloped B. summoned C. tempted D. provoked

单选题You are likely to set a promotion because of the profitable______you made for the company last month.

单选题Questions 27—30 are based on the passage about sign language. You now have 20 seconds to read Questions 27—30.

单选题We had been taken over by another firm, and a management ______ was under way.

单选题As a result of careless washing the jacket ______ to a child's raze.

单选题Sometimes ______ matters may result in surprising large effects.

单选题How to {{U}}evaluate{{/U}} the performance of students is still a problem that troubles many professors.

单选题Sophisticated equipment, white coats and medical ______ serve to make most lay people feel ignorant and less important. A. jargon B. accent C. dialect D. idiom

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单选题I can't understand how he can feel that his colleagues are always ready to denounce him.(2003年中国人民大学考博试题)

单选题Animals that are good sleepers ______.

单选题A passer-by was quick enough to ______ the falling child and drew him out the path of a lorry.

单选题Pity those who aspire to put the initials PhD after their names. After 16 years of closely supervised education, prospective doctors of philosophy are left more or less alone to write the equivalent of a large book. Most social-science postgraduates have still not completed their theses by the time their grant runs out after three years. "They must then get a job and finish in their spare time, which can often take a further three years. By then, most new doctors are sick to death of the narrowly defined subject, which has blighted their holidays and mined their evenings. The Economic and Social Research Council, which gives grants to postgraduate social scientists, wants to get better value for money by cutting short this agony. It would like to see faster completion rates: until recently, only about 25% of PhD candidates were finishing within four years. The ESRC’ s response has been to stop PhD grants to all institutions where the proportion taking less than four years is below 10%; in the first year of this policy the national average shot up to 39%. The ESRC feels vindicated in its toughness, and will progressively raise the threshold to 40% in two years. Unless completion rates improve further, this would exclude 55 out of 73 universities and polytechnics-including Oxford University, the London School of Economics and the London Business School. Predictably, howls of protest have come from the universities, who view the blacklisting of whole institutions as arbitrary and negative. They point out that many of the best students go quickly into jobs where they can apply their research skills, but consequently take longer to finish their theses. Polytechnics with as few as two PhD candidates complain that they are penalized by random fluctuations in student performance. The colleges say there is no hard evidence to prove that faster completion rates result from greater efficiency rather than lower standards or less ambitious doctoral topics. The ESRC thinks it might not be a bad thing if PhD students were more modest in their aims. It would prefer to see more systematic teaching of research skills and fewer unrealistic expectations placed on young men and women who are undertaking their first piece of serious research. So in future its grants will be given only where it is convinced that students are being trained as researchers, rather than carrying out purely knowledge-based studies. The ESRC can not dictate the standard of thesis required by external examiners, or force departments to give graduates more teaching time. The most it can do is to try to persuade universities to change their ways. Recalcitrant professors should note that students want more research training and a less elaborate style of thesis, too.

单选题He was______in his support of the governor's policies of social welfare affairs.

单选题The year of 776 B.C. is considered to be the founding date of the Olympic Games in ancient Greece. The Games lasted more than 11 centuries ______ they were banned in 393 A.D. A. when B. after C. as D. until

单选题"The effect of this medicine ______ by midnight," the doctor told Emma "You had better not try to read tonight."

单选题{{B}}Directions:{{/B}} There are 4 passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C. and D. Choose the best answer and mark the corresponding letter on the Answer Sheet with a single line through the center.{{B}}Passage One{{/B}} The mid-sixties saw the start of a project that, along with other similar research, was to teach us a great deal about the chimpanzee mind. This was project Washoe, conceived by Trixie and Allen Gardner. They purchased an infant chimpanzee and began to teach her the signs of ASL, the American Sign Language used by the deaf. Twenty years earlier another husband and wife team, Richard and Cathy Hayes, had tried, with an almost total lack of success, to teach a young chimp, Vikki, to talk. The Hayes's undertaking taught us a test about the chimpanzee mind, but Vikki, although she did well in IQ tests, and was clearly an intelligent youngster, could not learn human speech. The Gardners, however, achieved spectacular success with their pupil, Washoe. Not only did she learn signs easily, but she quickly began to string them together in meaningful ways. It was clear that each sign evoked, in her mind, a mental image of the object it represented. If, for example, she was asked, in sign language, to fetch an apple, she would go and locate an apple that was out of sight in another room. Other chimps entered the project, some starting their lives in deaf signing families before joining Washoe. And finally Washoe adopted an infant, Loulis. He came from a lab where no thought of teaching signs had ever penetrated. When he was with Washoe he was given no lessons in language acquisition--not by humans, anyway. Yet by the time" he was eight years old. he had made fifty-eight signs in their correct contexts. How did he learn them? Mostly, it seems, by imitating the behavior of Washoe and the other three signing chimps, Dar, Moja and Tam. Sometimes, though, he received tuition from Washoe herself. One day, for example, she began to swagger about bipedally, hair bristling, signing food! food! food! in great excitement. She had seen a human approaching with a bar of chocolate. Loulis, only eighteen months old, watched passively. Suddenly Washoe stopped her swaggering, went over to him, took his hand, and moulded the sign for food (fingers pointing towards mouth). Another time, in a similar context, she made the sign for chewing gum, but with her hand on his body. On a third occasion Washoe picked up a small chair, took it over to Loulis, set it down in front of him, and very distinctly made the chair sign three times, watching him closely as she did so. The two food signs became incorporated into Loulis's vocabulary but the sign for chair did not. Obviously the priorities of a young chimp are similar to those of a human child! Chimpanzees who have been taught a language can combine signs creatively in order to describe objects for which they have no symbol. Washoe, for example, puzzled her caretakers by asking, repeatedly, for a rock berry. Eventually it transpired that she was referring to brazil nuts which she had encountered for the first time a while before. Another language- trained chimp described a cucumber as a green banana. They can even invent signs. Lucy, as she got older, had to be put on a leash for her outings. One day, eager to set off but having no sign for leash, she signaled her wishes by holding a crooked index finger to the ring on her collar. This sign became part of her vocabulary.