题目内容
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Radiation can hurt us in that it can ______.
A．affect the healthy growth of our offspring
B．damage cells which may grow into cancer years later
C．kill large numbers of cells in main organs so as to cause death immediately
D．all of the above
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更多“Radiation can hurt us in that it can ______.A．affect the healthy growth of our offspringB．”相关的问题
Radiation can hurt us in the way that it can______.
A．kill large numbers of cells in main organs so as to cause death immediately
B．damage cells which may grow into cancer years later
C．affect the healthy growth of our offspring
D．all of the above
Which of the following statements is NOT true？
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.
A．Cancer can be passed on to the next generation.
B．Senior citizens are more vulnerable to the hurt of radiation.
C．The impact of radiation can be accessible over generations.
D．Scientists have found out solutions to radiation.
Which of the following can be inferred from the passage？
A．Cancer can be passed on to the next generation.
B．Senior citizens are more vulnerable to the hurt of radiation.
C．The impact of radiation can be accessible over generations.
D．Scientists have found out solutions to radiation.
听力原文： Nuclear reaction is no longer an alien concept for us. It can not be detected by human senses. We cannot see or touch it. Radiation is similar with radio waves. Radio waves can not be sensed without a radio receiver. Radioactivity can not be sensed without a radiation detector. On the other side, there is a big difference between radio waves and radiation. Radiation is harmful to people's health and other living things. Radiation at high levels can even kill living things by killing masses of cells in important organs before people know the damage in their bodies. No level of radiation is completely safe. If the cells are badly hit by radiations of low levels, die dead cells will be replaced by the healthy cells in your body. But if the cells are killed by high levels of radiation, the cells may produce themselves in an unusually way, and these cells may become cancerous. This is the origin of our increased risk in cancer, as a result of radiation exposure.
We have studied radiation for nearly 100 years now. We know radiation does lots of damage. The hurt can be passed on from generation to generation. A child can be born very weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Nowadays, the scientists have been exploring new ways to deal with the radiation. They are trying to find out ways to prevent the damage of radiation to human being's health. To thoroughly solve the problem of radiation, more effort still needs to be taken.
Questions:
17. Why does the speaker say that radiation is similar to radio waves？
18. According to the passage, why does the cancer increase？
19. Which of the following is true according to the passage？
20. Which of the following can be inferred from the passage？
(17)
A．Because both of them can be detected by human senses.
B．Because both of them can be sensed by a radio receiver.
C．Because both of them are harmful.
D．Because both of them can only be detected by devices.
Nuclear Radiation
Nuclear power&39;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&39;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&39;t detect then, sense them, without a radio receiver. Similarly, we can&39;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 outright 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 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 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 irradiated and feel fine, then die of cancer five, ten or twenty years later as a result. Or a child can be born weak or liable to serious illness as a result of radiation absorbed by its grandparents.
Radiation can hurt us. We must know the truth.
According to the passage， the danger of nuclear power lies in__________ 查看材料
A.nuclear mystery
B.radiation detection
C.radiation level
D.nuclear radiation
(Passage 2, Lines 1-2, Para. 5)
Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged;
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