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AfewyearsafterWorldWarIIfinished,scientistsspokewithgreateagernessabouttheuseofnuclearpower(核能源)assourceofenergy.Withintwentyyears,theysaid,nuclearwouldtaketheplaceofcoal,gasandoilasasourceofpower

题目详情
  A few years after World War II finished, scientists spoke with great eagerness about the use of nuclear power(核能源) as source of energy. Within twenty years, they said, nuclear would take the place of coal, gas and oil as a source of power at homes and in industry. This promise has never been carried out(兑现) and there are now serious doubts that it ever will be. Nuclear power plants are used to produce energy in some wealthier countries, but the cost is high.
  Although safety measures have been taken, radiation leaks(辐射泄漏) have taken place and workers have been killed or affected. The problem of getting rid of the nuclear waste has proved most difficult. There is a limit to the amount of waste materials which can be buried in the ground or poured on the sea-bed. These methods may also cause more problems. Waste materials polluted by radiation may remain dangerous for 200 years or more.
  It is no surprise that scientists have now turned to the sun and the sea as sources of power. The sun shines day after day almost wastefully, providing us with energy far beyond all our needs.
After the World War II, scientists hoped to use ________.
The most difficult problem is ________.
The underlined word“plants”in the first paragraph means ________.
It is ________ to use nuclear power plants to produce energy.
Which of the following is true?
Nuclear waste must be dealt with carefully because ________.
People should take safety measures because ________.
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答案和解析
【分析】1. 根据第一段第一句A few years after World War II finished, scientists spoke with great eagerness about the use of nuclear power(核能源) as source of energy.可知答案。
2. 根据第二段第二句The problem of getting rid of the nuclear waste has proved most difficult.可知答案。
3. 划线部分的plants意为“工厂”。与C项意思相符。
4. 根据第一段最后一句Nuclear power plants...but the cost is high.可知,利用核发电站生产能源是很昂贵的。
5. 根据第二段第三句There is a limit to the amount of waste materials which can be buried in the ground or poured on the sea-bed.可知,能被掩埋在地下或倾入海底的核废料是有限度的。换言之,不是所有的核废料都能被处理掉。
6. 根据第二段最后一句Waste materials polluted by radiation may remain dangerous for 200 years or more.可知,核废料必须谨慎处理,因为它危害人类的健康。
7. 根据第二段第一句Although safety measures have been taken, radiation leaks(辐射泄漏) have taken place...可知答案。
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