C)He ran out of gas D)He would host a dinner party 29. What did the woman do? A)she jumped the line B)she cursed the man C)she quarrel with the man D) She offended the others 30. What is the best title of the passage? A)Good Manners. B)Mind Your Tongue. C)An Unlucky Day D)At the Gas Station. Passage 3 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 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 receivel Similarly we cannot sense radioactivity without a radio detector. But unlike common radio waves, unclear radiation is not harmless to human beings and other 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 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 irradiated and feel fine then die of cancer five ten or twenty years later as a result Radiation can hurt us. we must know the truth 31. The second paragraph is mainly about A)Nuclear radiation is invisible but harmful B)Nuclear radiation is detected only by a receiver. C)Radio waves are harmless D)Radio waves are mysteriousC) He ran out of gas. D) He would host a dinner party. 29. What did the woman do? A) She jumped the line. B) She cursed the man. C) She quarrel with the man. D) She offended the others. 30. What is the best title of the passage? A) Good Manners. B) Mind Your Tongue. C) An Unlucky Day. D) At the Gas Station. Passage 3 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 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, unclear radiation is not harmless to human beings and other 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 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 irradiated and feel fine, then die of cancer five, ten or twenty years later as a result. Radiation can hurt us. We must know the truth. 31. The second paragraph is mainly about ____. A) Nuclear radiation is invisible but harmful. B) Nuclear radiation is detected only by a receiver. C) Radio waves are harmless. D) Radio waves are mysterious