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。