Nuclear power’s danger to health, safety, and even life itself can be summed up in one wor

Nuclear power’s danger to health, safety, and even 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 can’t be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can’t detect them, sense them, without a radio receiver. Similarly, we can’t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being immediately by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no levels of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and if they are killed immediately, 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 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 irradiated（辐射）and feel fine, then die for cancer five, ten, or twenty years later as a result. Or a child can be born weak as a result of radiation absorbed by its grandparents.
Radiation can hurt us. We must know the truth.
【小题1】What is the main idea of the passage? A．How to detect nuclear radiation.B．How radiation kill a man. C．The mystery about nuclear radiation. D．Serious damage caused by nuclear radiation.【小题2】Which of the following statements is true? A．Nuclear radiation can cause cancer to human beings.B．Nuclear radiation can be safe to human beings if its level is low.C．Nuclear radiation can be detected by human senses.D．Nuclear radiation is just like common radio waves.【小题3】What is not the reason why nuclear radiation has a certain mystery? A．The hurt cells can stay in the body many years and then grow into cancer.B．It can do harm to a person while the victim isn't aware the damage has occurred.C．Nuclear radiation can kill a person very easily.D．Radiation can seldom kill a person immediately.【小题4】If a human being is hit by nuclear radiation, he may . A．die of cancer after many yearsB．die immediately C．have a child who may be born weak D．all of the aboveC

(答案→)C 解析：文章介绍核辐射对人类和动物的危害，如果辐射较弱，可能会危害健康，有的影响不是明显的，但是人们可能多年后会死于癌症，或会对后代产生影响，如果核辐射量大，对导致死亡。【小题1】主旨题：纵观全文和第二段的句子：Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses.以及第三段的句子： This is another reason for some of the mystery about nuclear radiation.可知这篇文章讲的是核辐射的迷。所以选C。【小题2】细节题：从第三段的句子：But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They can grow into cancer. Sometimes this does not show up for many years.可知核辐射会导致人类的癌症，选A。B项是如果核辐射的量比较低，对人是安全的，这和第三段的句子：But even the lowest levels can do serious damage.是矛盾的，C项的意思是核辐射能够被人感觉到，这个和第二段的：Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses.是不符的，D项的意思是核辐射就像普通的无线电报，这和第二段的句子：But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. 是矛盾的。【小题3】细节题：题目问：哪个不是核辐射成为迷的原因：根据最后一段A person can be irradiated（辐射）and feel fine, then die for cancer five, ten, or twenty years later as a result.可知A是一个原因，Serious damage can be done without the victim being aware at the time that damage has occurred.可知B是原因，. 从第三段的句子：If the radiation does not hit anything important, the damage may not be serious.可知核辐射不会立刻将人杀死。C项于这个说法正好相反，所以选C。【小题4】细节题：从第一段Nuclear power’s danger to health, safety, and even life itself can be summed up in one word: radiation.可知核辐射可以致人死亡，最后一段A person can be irradiated（辐射）and feel fine, then die for cancer five, ten, or twenty years later as a result.可知A是一个原因，核辐射可以让人多年后死于癌症，也会生出虚弱的孩子，所以ABC三项都提到了，选D。

我也是这个答案