Question

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（輻射）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.

1.What is the most dangerous factor of nuclear power?

A. Radiation B. Quantity

C. Amount D. Place

2.Which of the following statements is true?

A. Nuclear radiation can do harm to human beings.

B. Nuclear radiation cannot do harm to human beings.

C. Nuclear radiation can be detected by human senses.

D. Nuclear radiation is just like common radio waves.

3.How can nuclear radiation kill an animal?

A. By damaging its heart.

B. By killing a few cells.

C. By killing many cells in important organs.

D. By hitting any place in its body.

4.Why does nuclear radiation have a certain mystery?

A. Because human beings learn its harmfulness.

B. Because it can do harm to a person while the victim isn't aware the damage has occurred.

C. Because nuclear radiation can kill a person very easily.

D. Because human beings have no effective machine in order to detect nuclear radiation.

5.If a human being is hit by nuclear radiation, he may _______.

A. die of cancer after many years

B. die immediately

C. have a child who may be born weak

D. all of the above

 

Answer 1

1.A

2.A

3.C

4.B

5.D

【解析】

試題分析：文章介紹核輻射對人類和動物的危害，如果輻射較弱，可能會危害健康，有的影響不是明顯的，但是人們可能多年后會死于癌癥，或會對后代產(chǎn)生影響，如果核輻射量大，對導致死亡。

1.A細節(jié)理解題。根據(jù)第一段提到Nuclear power’s danger to health, safety, and even life itself can be summed up in one word: radiation可知選A項。

2.A細節(jié)題：從第三段的句子：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.可知核輻射會導致人類的癌癥，選A。B項是如果核輻射的量比較低，對人是安全的，這和第三段的句子：But even the lowest levels can do serious damage.是矛盾的，C項的意思是核輻射能夠被人感覺到，這個和第二段的：Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses.是不符的，D項的意思是核輻射就像普通的無線電報，這和第二段的句子：But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. 是矛盾的。

3.C細節(jié)題：從第三段的句子：At very high levels, radiation can kill an animal or human being immediately by killing masses of cells in vital organs. 可知核輻射可以殺死重要器官的細胞從而使動物立刻死亡，選D

4.B 細節(jié)題。根據(jù)倒數(shù)第二段提到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.可知當受害者沒有意識到危險時，就可以發(fā)生危險，故選B項。

5.D細節(jié)題：從第一段Nuclear power’s danger to health, safety, and even life itself can be summed up in one word: radiation.可知核輻射可以致人死亡，最后一段A person can be irradiated（輻射）and feel fine, then die for cancer five, ten, or twenty years later as a result.可知A是一個原因，核輻射可以讓人多年后死于癌癥，也會生出虛弱的孩子，所以ABC三項都提到了，選D。

考點：健康類閱讀。