2. 外语
  3. Nuclear power’s danger to health, safety, and even to life itself can be summed up in one word: radiation. Nuclear radiation

Nuclear power’s danger to health, safety, and even to life itself can be summed up in one word: radiation. Nuclear radiation

admin2010-08-21  26
问题     Nuclear power’s danger to health, safety, and even to life itself can be summed up in one word: radiation.
    Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It cannot be seen or heard, or touched or tasted, even though it is all around us. There are other things like that. Radio waves are all around us but we cannot detect them, sense them, without a radio receiver.  Similarly, we cannot sense radioactivity without a radio detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other things.
    At very high levels, radiation can kill an animal or human being outfight by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hurt anything important, the damage may not be significant. This is the case when only a few 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 reproduce themselves in a deformed 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 victim being aware at the time that damage has occurred. A person can be radiated and feel fine, then die of cancer five, ten or twenty years later as a result.
    Radiation can hurt us. We must know the troth.  
Which of the following statements is NOT true?
选项 A、People hurt when hit by nuclear radiation.
B、People might be hurt by nuclear radiation unawares.
C、Nuclear radiation can cause cancer even if the patient has never been radiated.
D、Some people don’t quite understand radiation.
答案A
解析 这是一个是非判断题。根据文章我们可以知道：核辐射和无线电波一样，都不能被人们察觉到，然而不同的是，核辐射对人体是有害的。核辐射对人体的危害在于，损害人体细胞，却不被人们察觉到。因此，这里选项A认为：受到核辐射的人们会感到刺痛。这与原文意思相悖。所以，本题选择A项。
转载请注明原文地址:https://kaotiyun.com/show/2S7K777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)