A. let down 　　B. let alone 　　C. let off 　　D. let out

　　35. We should always keep in mind that _____ decisions often lead to bitter regrets.

　　A. urgent 　　B. hasty 　　C. instant 　　D. prompt

　　36. John complained to the bookseller that there were several pages ____ in the dictionary.

　　A. missing 　　B. losing 　　C dropping 　　D. leaking

　　37. In the past, most foresters have been men, but today, the number of women ____ this field is climbing.

　　A. engaging 　　B. devoting 　　C. registering 　　D. pursuing

　　38. The supervisor didn't have time so far to go into it _____, but he gave us an idea about his plan.

　　A. at hand 　　B. in turn　　 C. in conclusion　　 D. at length

　　39. Their demand for a pay raise has not the slightest ____ of being met.

　　A. prospect 　　B. prediction 　　C. prosperity 　　D. permission

　　40. It's usually the case that people seldom behave in a _____ way when in a furious state.

　　A. stable　　 B. rational 　　C. legal　　 D. credible

　　Part Two:

　　Sleep is divided into periods of so-called REM sleep, characterized by rapid eye movements and dreaming, and longer periods of non-REM sleep. 41 kind of sleep is at all well-understood , but REM sleep is 42 to serve some restorative function of the brain. The purpose of non-REM sleep is even more 43 .The new experiments, such as these 44 for the first time at a recent meeting of the Society for Sleep Research in Minneapolis, suggest fascinating explanations 45 of non-REM sleep . For example, it has long been known thattotal sleep 46 is 1OO percent fatal to rats, yet ,47 exanlination of the dead bodies , the animals look completely normal . A researcher has now 48 the mystery of why the aninlals die. The rats 49 bacterial infections of the blood ,50 their immune systems——the self-protecting mechanism against disease——had crashed.

　　41 . (A)Either　　 (B)Ndther　　 (C)Eachtn)Any

　　42 . (A) intended 　　( B)required 　　( C) assumed　　 ( D) inferred

　　43 . (A) subtle　　 (B)obvious 　　(C)mysterious 　　　　(D)doubtful

　　44 . (A) maintained　　 ( B) described　　 (C)settled　　 (D)afforded

　　45. (A)in the light　　 (B)by virtue 　　(C)with the exception　　 (D)for the purpose

　　46 . (A) reduction 　　( B) destruction 　　(C) deprivation　　 (D) restriction

　　47. (A)upon 　　(B)by 　　(C)through 　　(D)with

　　48. (A)paid attention to 　　(B)caught sight of　　 (C)laid emphasis on　　 (D)cast light on

　　49 . (A) develop 　　(B)produce 　　(c)stimulate 　　(D)induce

　　50. (A)if 　　(B)as if　　 (C)only if 　　(D)if only

　　PartⅢ　Reading Comprehensinn

　　Passage l

　　Money spent on advertising is money spent as well as any I know of. It serves directly to assist a rapid distribotion of goods at reasonable price, thereby establishing a firm home market and so making it possible to provide for export at competitive prices. By drawing attention to new ideas it helps enormously to raise standards of living. By helping to increase demand it ensures an increased need for labour, and is therefore an effective way to fight unemployment. It lowers the costs of many services: without advertisements your daily newspaper would cost four times as much, the price of your television licence would need to be doubled, and travel by bus or tube would cost 20 per cent more. And perhaps most important of all, advertising provides a guarantee of reasonable value in the products and services you buy. Apart from the fact that twenty-seven acts of Parliament gov- ern the terms of advertising, no regular advertiser dare promote a product that fails to live up to the promise of his advertisements. He might fool some people for a little while through misleading advertising. He will not do so for long, for mercifully the public has the good sense not to buy the inferior article more than once. If you see an article consistently advertised, it is the surest proof I know that the article does what is claimed for it , and that it represents good value.