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  3. It is often claimed that nuclear energy is something we cannot do without. We live in a consumer society where there is an enorm

It is often claimed that nuclear energy is something we cannot do without. We live in a consumer society where there is an enorm

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问题    It is often claimed that nuclear energy is something we cannot do without. We live in a consumer society where there is an enormous demand for commercial products of ail kinds. Moreover, an increase in industrial production is considered to be one solution to the problem of mass unemployment. Such an increase presumes an abundant and cheap energy supply. Many people believe that nuclear energy provides an inexhaustible and economical source of power and that it is therefore essential for an industrially developing society. There are a number of other advantages in the use of nuclear energy. Firstly, nuclear power, except for accidents, is clean. A further advantage is that a nuclear power station can be run and maintained by relatively few technical and administrative staff. The nuclear reactor represents an enormous step in our scientific evolution and, whatever the anti-nuclear group says, it is wrong to expect a return to more primitive sources of fuel. However, opponents of nuclear energy point out that nuclear power stations bring a direct threat not only to the environment but also to civil liberties. Furthermore, it is question able whether ultimately nuclear power is a cheap source of energy. There have, for example, been very costly accidents in America, in Britain and, of course, in Russia. The possibility of increases in the cost of uranium in addition to the cost of greater safety provisions could price nuclear power out of the market. In the long run, environmentalists argue, nuclear energy wastes valuable resources and disturbs the ecology to an ex tent which could bring about the destruction of the human race. Thus if we wish to survive, we cannot afford nuclear energy. In spite of the case against nuclear energy outlined above, nuclear energy programs are expanding. Such an expansion assumes a continual growth in industrial production and consumer demands. However, it is doubtful whether this growth will or can continue. Having weighed up the arguments on both sides, it seems there are good economic and ecological reasons for sources of energy other than nuclear power.
The function of the last sentence is to ______.
选项 A、advance the final argument
B、reflect the writer’s attitude
C、reverse previously expressed thoughts
D、show the disadvantages of nuclear power
答案B
解析 在本文中，作者首先指出现代社会对能源的巨大需求；然后阐述了核能的利弊；最后得出结论：权衡利弊后我们有理由认为应该选择使用核能以外的其他能源。所以最后一句是表明作者对核能的态度，故[B]正确。
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