填空题Customer: Would you please tell me my balance? Clerk: ______.

填空题I was just falling sleep last night when I heard a knock at the door.

填空题Robert Frost poetry focused on the landscape and people in ________

填空题The typical feature of Robert Brownings poetry is the ________

填空题(A large collection) of contemporary photographs, (including) some taken by Mary (are) on display (at) the museum. A. A large collection B. including C. are D. at

填空题许多困在山洞里的人在救援队赶到之前就死了. (to trap).

填空题These studies give ______ (leading) results because they haven't looked at enough cases.

填空题一天，苏珊(Susan) 在浏览书籍时，被一个真实故事吸引住了。

填空题Before I arrived home in the evening, my mother (get) ______ the supper ready.

填空题Believe it or not, when first (introduce) ______ to Europe, tomato was thought to be poisonous.

填空题________linguistics attempts to lay down rules of correctness as to how language should be used while ________ linguistics aims to discover and record what language is like and how it is used

填空题Psycholinguistics has its roots in ________linguistics on one hand, and in cognitive psychology on the other hand

填空题Many ______ (village) were forced to leave their hometown by the flood.

填空题News reports often focus on disputes among scientists over the validity of preliminary (untested) data, hypotheses, and models (which by definition are tentative). This aspect of science-　1　because it has not been widely　2　and accepted-is called frontier science. The media　3　to focus on frontier science because its so-called "breakthroughs" make good news stories. Just because something is in the　4　of frontier science,　5　, does not mean that it isn''t worthy of serious consideration;　6　, such matters need further study to determine their　7　. 　　　8　contrast, consensus science consists of data, models, theories, and laws that are widely accepted. This aspect of science is very reliable but is　9　considered newsworthy. The trouble is that the word science is used to　10　both frontier and consensus science, without　11　The media preference　12　frontier science gives the public the　13　impression that frontier science　14　very certain conclusions, which may or may not be correct. 　　However,　15　some frontier science is later shown to be unreliable, members of the public often falsely　16　that consensus science is also quite uncertain. We need to take both frontier and consensus science　17　but recognize their differences. One way to find out what scientists generally agree　18　is to seek out reports by scientific bodies that attempt to　19　consensus in　20　areas of science and technology.

填空题[A] What route does HIV take after it enters the body to destroy the immune system?[B] How and when did the long-standing belief concerning AIDS and HIV crop up?[C] What is the most effective anti-HIV therapy?[D] How does HIV subvert the immune system?[E] In the absence of a vaccine, how can HIV be stopped?[F] Why does AIDS predispose infected persons to certain types of cancer and infections? In the 20 years since the first cases of AIDS were detected, scientists say they have learned more about this viral disease than any other. Yet Peter Piot, who directs the United Nations AIDS program, and Stefano Vella of Rome, president of the International AIDS Society, and other experts say reviewing unanswered questions could prove useful as a measure of progress for AIDS and other diseases. Among the important broader scientific questions that remain: 41. __________. A long-standing belief is that cancer cells constantly develop and are held in check by a healthy immune system. But AIDS has challenged that belief. People with AIDS are much more prone to certain cancers like non-Hodgkins lymphomas and Kaposi's sarcoms, but not to breast, colon and lung, the most common cancers in the United States. This pattern suggests that an impaired immune system, at least the type that occurs in AIDS, does not allow common cancers to develop. 42. __________. When HIV is transmitted sexually, the virus must cross a tissue barrier to enter the body. How that happens is still unclear. The virus might invade directly or be carried by a series of different kinds of cells. Eventually HIV travels through lymph vessels to lymph nodes and the rest of the lymph system. But what is not known is how the virus proceeds to destroy the body's CD-4 cells that are needed to combat invading infectious agents. 43. __________. Although HIV kills the immune cells sent to kill the virus, there is widespread variation in the rate at which HIV infected people become ill with AIDS. So scientists ask. Can the elements of the immune system responsible for that variability be identified? If so, can they be used to stop progression to AIDS in infected individuals and possibly prevent infection in the first place? 44. __________. In theory, early treatment should offer the best chance of preserving immune function. But the new drugs do not completely eliminate HIV from the body so the medicines, which can have dangerous side effects, will have to be taken for a lifetime and perhaps changed to combat resistance. The new policy is expected to recommend that treatment be deferred until there are signs the immune system is weakening. Is a vaccine possible? There is little question that an effective vaccine is crucial to controlling the epidemic. Yet only one has reached the stage of full testing, and there is wide controversy over the degree of protection it will provide. HIV strains that are transmitted in various areas of the world differ genetically. It is not known whether a vaccine derived from one type of HIV will confer protection against other types. 45. __________. Without more incisive, focused behavioral research, prevention messages alone will not put an end to the global epidemic.

填空题Frank: Did you watch the football game on TV last night? Charles: No. But____________

填空题What is kinesics?

填空题The sound [p] can be described with ________, bilabial, stop

填空题A. I think so.B. Don't mention it.C. Please take it easy.D. What's the matter?E. And you?F. I'd love to.G. But he panned to.H. Me, too.

填空题James Joyce (1882-1941), the Irish novelist, is noted for his experimental use of language in such works as________(1922) and Finnegans Wake (1939)