大学英语每日一练（9-28）

51. He looks like an American, but ________ fact he is a European.

A. in

B. into

C. on

D.for

【答案】A

【解析】考查固定搭配。in fact，事实上。句意：他看起来像美国人，实际上他是一个欧洲人，故选择A。

52. I’ll return the book to the library as soon as I ________ it.

A. will finish

B. am going to finish

C. finish

D. have finished

【答案】C

【解析】句意: 我一看完我就将把书归还给图书馆。as soon as引导时间状语从句，在此时间状语从句中，主句用一般将来时，从句用一般现在时。

53. —Shall Brown come and play computer games?

—No, ________ he has finished his homework.

A. when

B. if

C. unless

D. once

【答案】C

【解析】考查条件状语从句的连接词。答句句首的 No 表明其后省略的是一个否定句，全句补充完整为：She can’t play computer games unless she has finished her homework.故选择C。

54 .________ they don’t like us is very clear.

A. What

B.That

C.Which

D.Where

【答案】B

【解析】句意：他并不喜欢他们，这一点很清楚。从句意看，主语从句they don’t like us不缺少成分，并且与主句的意思能够完全符合，不需添加成分和意思，故选择B。

55. I’d rather you ________ right away.

A. leave

B. left

C. will leave

D. to leave

【答案】B

【解析】考查虚拟语气。句意：我宁愿你马上离开。I’d rather后面用过去式表示现在或将来，在这里表示现在，故选择B。

56. Nearly ________ of the earth ________ covered by sea.

A.three fourth; is

B.three fourths; is

C.three fourth; are

D.three fourths; are

【答案】B

【解析】考查分数表达。句意：几乎地球表面的四分之三被海洋覆盖。分数的表达方式：分子用基数词，分母用序数词，当分子超过一了，分母变复数，本题中把地球看做整体，所以谓语动词用单数，故选B。

57. Tired, Jim was fast asleep with his back ________ a big tree.

A. in

B. below

C. beside

D. against

【答案】D

【解析】考查介词词义辨析。against：倚着，靠着;below：在……下方;beside：在……旁边;in：在……里面或(时间)……之后。句意：累了，吉姆背倚着树，很快就睡着了。故选D。

58. Though mathematics ________ hard, we all work at it hard.

A. are

B. were

C. was

D. is

【答案】D

【解析】本题考查主谓一致。句意：尽管数学很难，但是我们都很努力学。以-ics结尾的学科名词，如politics, physics, mathematics等作主语时，谓语动词用单数,：由题意可知应用一般现在时，故正确答案为D项。

59.________ you’ve all had a wonderful vacation.

A.It would be good that

B.It is good that

C.It was good that

D.It had been good that

【答案】B

【解析】考查主语从句。前面的it是形式主语，that引导主语从句，主语从句里的时态是现在完成时，故选择B。

60. We don’t think ________ significant for them to take part in the activity.

A. that

B. this

C. it

D. them

【答案】C

【解析】在此处it做形式宾语，真正的宾语是后面的不定式结构，故选择C。