题目内容
19.There are three separate sources of danger in supplying energy by nuclear power (原子能).First,the radioactive material must travel from its place of production to the power station.Although the power stations themselves are strongly built,the containers used for the transport of the materials are not.Normally,only two methods of transport are its use,namely road or rail.Unfortunately,both of these may have an effect on the general public,since they are sure to pass near,or even through,heavily populated areas.
Second,there is the problem of waste.All nuclear power stations produce wastes that in most eases will remain radioactive for thousands of years.It is impossible to make these wastes nonradioactive,and so they must be stored iii one of the inconvenient ways that scientists have invented.For example,they may be hurled under the ground,or dropped into deserted mines,or sunk in the sea.However,these methods do not solve the problem,since an earthquake could easily break the containers.
Third.there may occur the danger of a leak (泄漏) or an explosion at the power station.As with the other two dangers,this is nm very likely,so it does not provide a serious objection to the nuclear program.However,it can happen.
Separately,these three types of dangers are not a great cause for worry,if taken together,though,the probability of disaster (灾难) is extremely high.
64.What do we learn from the last paragraph?D
A.The power station is a safe place.
B.The dangers of nuclear energy can be prevented.
C.The general public are strongly against the nuclear program.
D.By itself,none of the three dangers is very likely to cause much worry.
65.What is this passage about?B
A.Uses of nuclear power.B.Dangers from nuclear power.
C.Public anger at nuclear power.D.Accidents caused by nuclear power.
分析 文章主要讲述了核能的危险性,包含三个方面:运输路径;浪费问题和核泄漏.
解答 64题答案是A.推理判断题.根据本段Separately,these three types of dangers are not a great cause for worry.Taken together,though,the probability of disaster is extremely high.如果把这三种危险合在一起,那么就很危险了,也就是说核材料本身就是十分危险的.故选A.
65题答案是B.主旨大意题.文章主要讲述了核能的危险性.故选B.
点评 考查学生的细节理解和推理判断能力.做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确选择.在做推理判断题时不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.
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