21. The fifth generation computers, with artificial intelligence, _C_ and perfected now.
A) developed B have developed C are being developed D will have been developed
22. This ticket _C_ you to a free meal in our new restaurant.
A gives B grants C entitles D credits
A,B两项都要加双宾语，结构为：gives / grants sb. sth.
entitle sb. to sth. 使某人有权得到某物； credit A to B 相信A是由B造成的。
相信飞机失事是由飞行员错误造成的。 Credit the crash to the pilot's mistake.
crash 坠落，坠毁（专指飞机失事）； collision 碰撞（强调两个物体碰撞，如火车、汽车等）。
we are sorry, very sorry, terribly sorry, awfully sorry.
23. You _D_ her in her office last Friday; she's been out of town for two weeks.
A needn't have seen B must have seen
C might have seen D can't have seen
24. That was so serious a matter that I had no choice but _D_ the police.
A called in B calling in C call in D to call in
have no choice but to do sth. 别无选择，只能做...
25. She was so _B_ in her job that she didn't hear anybody knocking at the door.
A attracted B absorbed C drawn D concentrated
be attracted by 被…所吸引； be absorbed in 全神贯注（专注）于做…
be drawn in 被诱骗（诱使）做... ； concentrate on 专注于。
I was simply drawn in. 我是被诱骗上钩的。
27. At first, the speaker was referring to the problem of pollution in the country, but halfway in her speech, she suddenly _B_ to another subject.
A committed B switched C favoured D transmitted
switch to another subject 转换话题； switch to another channel 转换频道。
28. It is politely requested by the hotel management that radios _C_ after 11 o'clock at night. [虚拟语气]
A were not played B not to play C not be played D did not play
29. Although I like the appearance of the house, what really made me decide to buy it was the beautiful _D_ through the window.
A vision B look C picture D view
view n. 景色，风景，视野，视域。
30. Cancer is second only _B_ heart disease as a cause of death.
A of B to C with D from
具有比较意味的形容词都要与介词to搭配。
32. The manager needs an assistant that he can _A_ to take care of problems in his absence. [in his absence 在某人不在场的情况下]
A count on B count in C count up D count out
presence n. 到场，出席； in one’s presence 在某人在场的情况下。
count on=depend on 指望，依靠，依赖； count up 算出总数；
count in 把…算在内； count out 把...排除在外。
33. The organization had broken no rules, but _A_ had it acted responsibly.
A neither B so C either D both
34. We gave out a cheer when the red roof of the cottage came _D_ view.
A from B in C before D into
come into view 进入视野，进入眼帘。 cheer n. 欢呼； cheers 干杯；
cheer-team 拉拉队； cheer-leader 拉拉队长。英语中为了…干杯用介词to引起。
to your health 为了你的健康干杯； to friendship为了友谊干杯。 bottom up 先干了。
35. They took _D_ measures to prevent poisonous gases from escaping.
A fruitful B beneficial C valid D effective
take effective measures 采取有效措施。 valid adj. 有效的，成立的。
36. Doing your homework is a sure way to improve your test scores, and this is especially true _A_ it comes to classroom tests.
A when B since C before D after
sure 做定语时表示“可靠的、稳妥的”。 come to 谈到，提及。
37. Careful surveys have indicated that as many as 50 percent of patients do not take drugs _D_ directed.
A like B so C which D as
drug n. 药品，毒品。 gay adj. 放荡的，快乐的； n. 同性恋者，尤指男性同性恋。
so后面加过去分词表示一种程度。 as后面加过去分词时表示“如同…那样，正如…那样”。 53. I hope all the precautions against air pollution, _D_ suggested by the local government, will be seriously considered here.
A while B since C after D as
precautions n. 防治措施； precautions against 防治…的措施。
after being + 过去分词，注意：after后面不能直接加过去分词。
38. In developing countries people are _C_ into overcrowded cities in great numbers.
A breaking B filling C pouring D hurrying
pour into 涌入，蜂拥而入。 break into 强行闯入。
39. It's reported that by the end of this month the output of cement in the factory _A_ by about 10%. [output 产量]
A will have risen B has risen C will be rising D has been rising
表达将来的行为在将来某时间之前完成用将来完成时。
40. If I had remembered _A_ the window, the thief would not have got in.
A to close B closing C to have closed D having closed
remember to do sth. 记得要做某事但没做。
41. There are other problems which I don't propose to _A_ at the moment.
A go into B go around C go for D go up
at the moment 目前，现在。 go into 谈论，讨论。
42. Don't get your schedule _C_; stay with us in this class.
A to change B changing C changed D change
43. It is quite necessary for a qualified teacher to have good manners and _A_ knowledge.
A extensive B expansive C intensive D expensive
extensive adj. 范围广大的，广博的； extensive knowledge 知识渊博。
expansive adj. 扩张的，面积广阔的； expensive adj. 昂贵的，高价的。
intensive adj. 仔细深入的，细致入微的。
54. The patient's health failed to such an extent that he was put into _C_ care.
A tense B rigid C intensive D tight
to such an extent 到如此的程度。 intensive care 特级护理。
44. Jean doesn't want to work right away because she thinks that if she _B_ a job she probably wouldn't be able to see her friends very often.
A has to get B were to get C had got D could have got
46. A love marriage, however, does not necessarily _B_ much sharing of interests and responsibilities. [a love marriage因相爱而结婚形成的婚姻]
A take over B result in C hold on D keep to
not necessarily 未必； interests n. 利益。 take over 接管，接收；
result in 导致，结果是； hold on 坚持，挺住； keep to 坚持，遵守。
47. The ability to store knowledge makes computers different form every other machine _A_ invented. [ever adj. 曾经，以往任何时候]
A ever B thus C yet D as
48. I'm not sure whether I can gain any profit from the investment, so I can't make a(n) _C_ promise to help you.
A exact B defined C definite D sure
definite: unlikely to be changed 不可能被改变的； definite promise 不可能被改变的诺言。
49. I have kept that portrait _B_ I can see it every day, as it always reminds me of my university days in London.
A which B where C whether D when
which在定语从句中除了做主语就是做宾语，when在定语从句中只能做时间状语。
remind sb. of sth. 使某人想起某事。
50. The sports meet, originally due to be held last Friday, was finally _D_ because of the bad weather. [sports meet=sports meeting 运动会]
A set off B broken off C worn off D called off |
