powers核能的danger.docx

1、powers核能的danger(一)Nuclear powers(核能的)danger to health, safety, and even life itself can be described in one word: radiation(辐射).Nuclear radiation has a certain mystery about it, partly because it cannot be detected (探测) by human senses. It cant be seen or heard, or touched or tasted, even though it

2、may be all around us. There are other things like that. For example, radio waves are all around us but we cant detect them, sense them without a radio receiver. Similarly, we cant sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to hu

3、man beings and other living things. At very high levels, radiation can kill an animal or human being outright by killing masses of cells (细胞) in important organs (器官). But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not

4、hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They re

5、produce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years.This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be

6、 irradiated(放射治疗) and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents.Radiation can hurt us. We must know the truth.1. According to the passage, the danger of

7、nuclear power lies in _.A. nuclear mystery B. radiation detectionC. radiation level D. nuclear radiation2. Radiation can lead to serious results even at the lowest level _.A. when it kills few cells B. if it damages few cellsC. though the damaged cells can repair themselvesD. unless the damaged cell

8、s can reproduce themselves3. Radiation can hurt us in the way that it can _.A. kill large numbers of cells in main organs so as to cause death immediatelyB. damage cells which may grow into cancer years laterC. affect the healthy growth of our younger generationD. lead to all of the above results4.

9、Which of the following can be best inferred from the passage?A. The importance of protection from radiation cannot be overemphasized (过分强调).B. The mystery about radiation remains unsolved.C. Cancer is mainly caused by radiation.D. Radiation can hurt those who do not know about its danger.（DBDA ）（二）

10、She is a cute, quiet girl. As a daughter, she has no secrets towards her mother, who is very much pleased with her. But recently she has become somewhat mysterious, not so open-minded as before. She has a diary that she keeps under lock and key. Mother cannot help worrying about her: what if she fal

11、ls in love, which is too early for a girl of her age. After all she is reaching the dangerous stage. These thoughts have caused trouble in the mothers mind. One weekend the girl came to tell that she was going to the cinema with her schoolmate and would return late. As this was the first time her mo

12、ther consented, but couldnt resist worrying because she had never been away at night before. The mother waited till nine and her uneasiness got the upper hand over her. She decided going out to meet her daughter. Just at the moment the noise of a car pulling up drew her to the window and-there was h

13、er daughter, waving goodbye to a boy. Her heart missed a beat. When the girl came in, the mother was watching TV, pretending nothing had happened. Mum, Im back. Yeah. Sorry to be late. Still sitting up? Yes. Oh. that.Whos that boy? The daughter was stunned(发愣) for a moment. Ah. Its my monitor. He ga

14、ve me a lift on his way home. Mum, Im going to bed. All right. Go to sleep early. Next morning when the mother went to the daughters room to do some tidying, she found her diary left at her pillow. After a few minutes hesitation she eventually opened it to the entry of the night before. It reads: Mu

15、m, its love that made you ask, but it would show your understanding of me if you hadnt. Holding the diary, the mother fell into thought.1. Which is the correct order according to the story? a. She took a lift back in her monitors car.b. She went to see a film with her classmate.c. She wrote in her d

16、iary to her mother.d. Her mother pretended to watch TV.e. Her mother worried about her daughters returning late.A. b, e, a, d, c B. e, b, a, d, cC. b, a, e, d, c D. b, e, a, c, d2. From the diary, we can see the daughter _. A. thanked her mother for asking herB. thought her mother cared about her very muchC. thought it was her mothers duty to askD. tho