A. /            B. with         C. for              D. A and B

41. Sorry, Peter. I took your backpack         .

A. by accident   B. by the way   C. by air        D. by mistake

Ⅲ.完形填空。(每小题2分，共20分)

根据短文内容，从A、B、C、D四个选项中选出一个能正确填人相应空格内的最佳答案，并把答题卡上对应题目的答案标号涂黑。

There was a woman in Detroit, who had two sons. She was worried about them, especially the younger one, Ben, because he was not doing well in school. Boys in his class played jokes on him because he seemed so   42  .The mother    43  that she would help her sons to do   44  in school by herself. She told them to go to the Detroit Public Library to   45  a book a week and do a book report for her.

One day, in Ben's class, the teacher held up a rock (石头) and asked    46  anyone knew it. Ben put up his hand and the teacher let him    47   . "Why did Ben put up his hand?" all of his classmates whispered (耳语). "He   48   said anything. What could he possibly want to say?" However, Ben not only   49  the rock, but also said a lot about it. The teacher and the other students were   50  . Ben had learned this from doing one of his book reports.

Later Ben became the top student of his class. When he finished high school, he went to Yale Universityand   51  became one of the best doctors in the United States.

42. A. clever          B. difficult             C. slow          D. quick

43. A. seemed        B. decided              C. wondered       D. told

44. A. well             B. bad                 C. right            D. good

45. A. see              B. find                 C. read             D. buy

46. A. that             B. if                   C. how            D. why

47. A. think            B. leave                 C. ask             D. answer

48. A. always         B. ever                 C. sometimes       D. never

49. A. found          B. played               C. knew            D. heard

50. A. afraid           B. surprised           C. worried          D. unhappy

51. A. at first           B. at the end          C. at last           D. now

Ⅳ.阅读理解。(每小题2分，共30分)

阅读下列材料，从A、B、C、D四个选项中选出最佳答案，并把答题卡上对应题目的答案标号涂黑。

A

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52."        "can tell you what to do if you are tired of a subject.