68．We won't know whether it will be successful. We won't know whether there will be good _____.

　 A. ends　　 B. results　　 C. effects　　 D. causes

B.results.

result意为“由某种活动或某种原因所产生的结果”，如：obtain(=get, attain, gain win, secure)good results(取得好结果)，publish the results(公布成绩)。

67．When I worked as the general manager of the firm, I sometimes had _____ to visit London on business.

　 A. opportunity　　 B. possibility　　 C. occasion　　 D. chance

C. occasion.

occasion 作可数名词时，意为“时机”，作不可数名词时，意为“必要”，本题中occasion意为“必要”。从句语法结构上看，本句中用opportunity(难得的)机会，chance(偶然的)机会均可，但按逻辑意思，应用occasion.

66. It has always been the _____ of our firm to encourage workers to take part in social activities.

　 A. plan　　 B. campaign　　 C. procedure　　 D. policy

D. policy.

policy(尤指政党、政府、大企业、商行等的)政策，方针。campaign(政治或竞选的)运动；(军事的)行动，procedure做事的手续、程序，plan计划，均不合题意。

本题译文：本公司的一贯方针是鼓励工人参加社会活动。

65. It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.

　 A. process　　 B. attention　　 C. measure　　 D. part

D. part.

take part in参加。

本题译文：显然，整个世界正经历着一场社会革命；科学家和技术人员必定是这场革命地主要参加者。

64．Even if they are on sale, these refrigerators are equal in price to, if not more expensive than, _____ at the other store.

A. anyone　　 B. the others　　 C. that　　 D. the ones

D. the ones

代词one可以用来替代前面提到过的名词，以避免重复。如果它替代的名词是复数，则用ones。本题中它代替refrigerators；因特指，故用the ones.

63．His landlady gave him a week's _____ to leave the flat.

　 A. threat　　 B. notice　　 C. advice　　 D. caution

B. notice.

notice预先通知(尤用雇主、雇员或房东、房客之间)：give one's employee a month's notice (通知雇员一个月后离职)。本题译文：他的女房东通知他一周后从套间搬走。

62. The noise was so _____ that only those with excellent hearing were aware of it.

　 A. dim　　 B. soft　　 C. faint　　 D. gentle

C.faint.

faint(=weak, indistinct; not clear)“微弱的，模糊的，不清楚的”。Dim(=not bright, not clearly to be seen)不亮的，看不清的；the dim light of a candle(微弱的烛光)。

61. We can't _____ one to change the habits of a lifetime in a short time.

A. hope　　 B. wait　　 C. expect　　 D. imagine

　 C. expect.

expect期望，盼望，表示认为有很大的客观可能性，例如：I expect the work to be finished by Friday.(我期望这项工作能在星期五前做完。)wait for ... to do sth.等待、等待......做......，强调“等”这一动词

的本身，如：The audience are waiting eagerly for the performance to begin.(观众正等着演出开始。)本题如改为这样：I waited for him to arrive in time for dinner, but he didn't come.(我等他来赶上晚餐，但他没有来。)由此可见，expect是表示“期待”，而wait for 是表示“等待”，词义完全不同。

注意hope后不能接sb. to do sth.。imagine being on the moon. 3)I'm sorry, but I can't imagine anyone doing research like that.

本题译文：我们不能期望一个人在这样短的时间内改变一辈子养成的习惯。

60.As civilization______, more and more people have realized the importance of preserving rare animals from extinction.

A. stretches　　　　　　　　　 B. spreads　　　　　　　　　　 C.extends　　　　　　　　　　 D. expands

答案是B “传播，扩散”。

A“伸展”；C“延长”；D“膨胀，扩大”。

59.Burning all the lights in the classroom will be a great______ on electric power.

A. waste　　　　　　　　　　　 B. lack　　　　　　　　　　　　 C. drain　　　　　　　　 D. damage

答案是C “消耗”，常与介词on连用。

A“浪费”，为不可数名词；B‘“缺少”；D“损坏，损害”。