阅读理解

　　Radioactivity is dangerous. It may cause skin burns; it may destroy good tissues (组织) and it may cause illness that could be passed on to our children and grandchildren, In case of exposure (暴露) it may even cause death.

　　In the early days of radioactivity, scientists did not realize these dangers, Marie and Pierre Curie, after having worked for a while with radioactive materials, noticed that their fingers were reddened and swollen (红肿) and the skin was peeling off. Henry Becquered carried a small tube with radium in it in his waistcoat pocket, and was surprised to find a burn on his chest. Other early workers also reported burns and harm of different kinds.

　　The strange fact that it can harm without causing pain is the warning signal we expect from harmfulness. Pain makes up pull back our hands from a fire or a hot object, but a person carrying radioactive materials had no way of telling whether he is touching something too “hot” for safety. Besides, the “burns” or other harmfulness that radioactivity produces may not appear for weeks. A person may have been hurt without knowing it for some time .

1．Which is the topic sentence?

[　　]

A．Radioactivity May Even Cause Death.

B．Radioactivity Does Great Harm to Children.

C．Radioactivity May Do Harm to People without Being Known.

D．Radioactivity is Dangerous.

2．A few people were mentioned in the passage .They ________.

[　　]

A．were all famous scientists of great achievements

B．died of radioactivity

C．knew little about radioactivity

D．did experiments on themselves to find the danger of radioactivity

3．According to the point of the passage , pain ________.

[　　]

4．The latter part of the passage is mainly written about ________.

[　　]

A．the danger to be with the radioactive materials

B．how scientists are selflessly devoted to science, in face of danger

C．the danger of radioactivity lies mainly in its being unseen and unknown for a time

D．burns and harm of all kinds that may dangerously happen around us

5．The sentence in the fourth line of the second paragraph, “the skin was peeling off” means “the skin was ________”.

[　　]

　　Radioactivity is dangerous. It may cause skin burns, it may destroy good tissues（组织）and it may cause illness that could be passed on to our children and. grand children. In case of exposure（暴露）it may even cause death.

　　In the early days of radioactivity, scientists did not realize these dangers. Marie and Pierre Curie, after having worked for a while with radioactive materials, noticed that their fingers were reddened and swollen（红肿）and the skin was peeling off. Henry Becquerel carried a small tube with radium in it in his waistcoat pocket, and was surprised to find a bum on his chest. Other early workers also reported bums and harm of different kinds.

　　The strange fact is that it can harm without causing pain, which is the warning signal we expect from harmfulness. Pain makes us pull back our hands from a fire or a hot object, but a per-son carrying radioactive materials has no way of telling whether he is touching something too“hot” for safety. Besides, the“burns” or other harmfulness that radioactivity produces may not appear for weeks. A person may have been hurt without knowing it for some time.

(1) Which is the topic sentence for this passage?

[　　]

A．Radioactivity may ever cause death.

B．Radioactivity does great harm to children.

C．Radioactivity may do harm to people without being known.

D．Radioactivity is dangerous.

(2) A few people were mentioned in the passage. They ________.

[　　]

A．were all famous scientists of great achievements

B．died of radioactivity

C．knew little about radioactivity

D．did experiments on themselves to find the danger of radioactivity

(3) According to the point of the passage, pain ________.

[　　]

(4) The sentence in the fifth line of the second paragraph“the skin was peeling off”means“________”．

[　　]

It was raining. I went into a cafe and asked for a coffee. 36 I was waiting for my drink, I realized there were other people in the place, but I sensed 　37 . I saw their bodies, but I couldn’t feel their souls 38 their souls belonged to the 39 .

I stood up and walked between the tables. When I came to the biggest computer, I saw a thin, small man 　40 in front of it. “ I’m Steve, ” he finally answered after I asked him a couple of times what his name was. “ I can’t talk with you. I’m 41 ,” he said. He was chatting online and, 42 , he was playing a computer game –a war game. I was 43 .

Why didn’t Steve want to talk with me? I tried 44 to speak to that computer geek（怪人）, 45 not a word came out of his mouth. I touched his shoulder, but no reaction（反应）. I was 　46 . I put my hand in front of the monitor, and he started to shout “ 47 ! ”

I took a few steps back, wondering if all those people in the cafe were looking at me. I 　48 , and saw nobody showed any interest.

49 , I realized that the people there were having a nice conversation with their machines, not with people. They were more 　50 having a relationship with the 　51 , particularly Steve. I wouldn’t want to　52 the future of human beings if they preferred sharing their lives with machines 　53 with people.

I was worried and sank in my thoughts. I didn’t even 54 that the coffee was bad, 55 Steve didn’t notice there was a person next to him.

36. A. Before　　 　　 　 B. Since　　　 　　　　　　　　　　　 C. Although　　　 　　　　　 D. While

37. A. pain　　 　　　 　 B. loneliness　 　　　　　 C. sadness　　　 　　 　 D. fear

38. A. because B. when C. until D. unless

39. A. home　　 　　 　 B. world　　　 　　　　　 　 C. Net　　　　　 　　 　　　　　　 D. Cafe

40. A. sleeping　 　　　　　　B. sitting　 　　　　　 　　　　　 C. laughing　　　　 　　　 D. learning

41. A.　tired　　 　　　 　　 B. thirsty　　 　　　　　 　 C. busy　　　　 　　　　　　 　　　 D. sick

42. A. first of all B. just then C. by that time D. at the same time

43. A. delighted　 　　　　　B. surprised 　　　　　　 C. moved　　　　 　　 　　 D. frightened

44. A. once　　 　　　 　 B. first　 　　　　　 　　　 C. again　　　　　　 　 　 D. even

45. A. or　 　　　　　　 　 B. so　　　　 　　　　 　　　　　　 C. if　　　　　　 　　 　　　 D. but

46. A. excited　 　　　　　　 B. respected　 　　　　　 　　　 C. unhappy 　　　　　　 　 D. afraid

47. A. Shut up　 　 　　 B. Leave me alone　　　　 C. Enjoy yourself　 　　 D. Help me out

48. A. walked about　 　 B. walked out　　　　　　　 C. raised my hand　　 D. raised my head

49. A. From then on 　　 B. At that moment　　　　 C. In all　　　　　　 　　　　 D. Above all

50. A. careful about B. tired of C. interested in　　　 　　　 D. troubled by

51. A. shop 　　　　　　 B. soul　　　 　　　　　 　　 C. geek　　　　　 　　 　　　　　　 D. computer

52. A. tell　　 　　　 　　　　　　 B. imagine　　　　　　　　　 C. plan　　　 　　　　　　　　 D. design

53. A. other than　　　 　 B. except for　 　　　　　 　　　 C. instead of　　 　　 　 D. as well as

54. A. pretend 　　　 　 B. understand 　　　　　　 C. insist　　　　 　　　 　　 D. realize

55. A. as if B. just as C. just after　　　 　　 　 D. even though