问题 单项选择题

环境污染物中占5%的致癌因素是()。

A.物理因素

B.化学因素

C.霉菌

D.病毒

E.寄生虫

答案

参考答案:A

阅读理解

阅读理解

       Jack drove a taxi through the busy streets from morning till night every day. One day a young man

jumped into his taxi. "To the station, hurry up ! " he said. Jack did his best, but at every corner there

was a red light. "Be quick! I don't want to miss my train. " The young man shouted at Jack. "I don't want

to die here ! "Jack shouted, too. Then he turned back and noticed the man's face. "Oh, he is the thief and

killed a woman," he thought, "his picture was in the newspaper. " Jack had an idea. He drove through the

red light. Soon Jack found a police car follow his. "Stop!" The young man shouted and jumped out. Jack

caught hold of him and cried out, "Give me money!" Two policemen came up. "He is the thief. " They

caught the young man at once.

       "You've done well.  Thank you ! " A policeman said to Jack.

1. Jack was a           .

A. driver      

B. policeman    

C. thief      

D. young man

2. The young man was a          .    

A. policeman    

B. driver    

C. thief          

D. doctor

3. Jack noticed that the young man was        .

A. his friend          

B. his workmate

C. a driver, too      

D. the murderer

4. Jack drove through the red light in order to make the police notice his car so he could _    

A. help the young man run away

B. help the police catch the murderer

C. make the police know his taxi was new

D. take the young man to the station in time

5. The policeman thanked Jack because he        .

A. drove-through the red light

B. helped them catch the thief

C. let the young man go away

D. helped the young man catch the train

单项选择题