题目内容：

完形填空,阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

There was a woman in Detroit，who has two sons．She was worried________  them，especially the younger one, Ben，________ he was not doing well in school. Boys in his class________ fun of him because he seemed so________ ．

The mother ________that she would, herself, have to get her sons to do better in school. She________ them to go to the Detroit Public Library to read a________ a week and do a report about it for her．

One day，in Ben’s ________   , the teacher held up a rock and asked if anyone knew it. Ben ________ up his hand and the teacher let him________. “Why did Ben raise his hand？” they wondered. He ________ said anything; what could he possibly want to say？ Well, Ben not only________ the rock; he said a lot about it. He named other rocks in its group and even knew________ the teacher had found it. The teacher and the students were________ . Ben had learned all this from doing one of his book________ ．

Ben later went on to the ________ of his class. When he finished high school, he went to Yale University________ at last became one of the best doctors in the United States．

After Ben had grown up，he ________  something about his mother that he did not know as a ________. She，herself，had never learned how to ________ ．

1.A．about                B. on             C. with            D. over

2.A．because             B. so             C. but             D. though

3.A．played                B. got            C. took            D. made

4.A．clever                B. hard           C. slow            D. quick

5.A．asked                 B. decided      C. forgot        D. heard

6.A．made                  B. let            C. told            D. considered

7.A．notice                B. message      C. book            D. question

8.A．class                B. room           C. office          D. lab

9.A．looked                B. gave           C. took            D. put

10.A．think                B. leave          C. stand           D. speak

11.A．always               B. even           C. quickly       D. never

12.A．found                B. played        C. knew          D. threw

13.A．whether              B. when           C. where           D. why

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

15.A．pictures            B. exercises      C. shops         D. reports

16.A．top                  B. end           C. back           D. side

17.A．so                   B. and            C. or              D. however

18.A．learnt            B. remembered     C. understood     D. guessed

19.A．doctor              B. child          C. student         D. teacher

20.A．read                 B. work          C. teach           D. show