It is often claimed that nuclear energy is something we cannot do without. We live in a consumer society (1)______ there is an e

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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 (1)______ there is an enormous demand for commercial products of all kinds.(2)______, an increase in industrial production is considered to be one solution(3)______ the problem of mass unemployment. Such an increase(4)______ an abundant and cheap energy supply. Many people believe that nuclear energy provides a(n)(5)______ and economical source of power and that it is therefore(6)______ for an industrially developing society. There are a number of other(7)______ 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(8)______ few technical and administrative staff. The nuclear reactor represents a(n)(9)______ step in our scientific evolution and, whatever the anti-nuclear group says, it is wrong to(10) ______ a return to more primitive sources of fuel.(11)______, opponents of nuclear energy point out that nuclear power stations bring a direct(12)______not only to the environment but also to civil liberties. Furthermore, it is questionable whether ultimately nuclear power is a cheap (13)______of energy.
    The possibility of increases in the (14)______ of uranium(铀)in addition to the cost of greater safety provisions could price nuclear power out of the market. In the long(15)______, environmentalists argue, nuclear energy wastes valuable resources and(16)______ the ecology to an extent which could bring about the destruction of the human race. Thus if we wish to survive, we cannot(17)______ nuclear energy. In spite of the case against nuclear energy outlined above, nuclear energy programmes are(18)______. Such an expansion assumes a continual growth in industrial production and consumer demands. However, it is (19)______ 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(20)______nuclear power.
(19)

选项 A、believable
B、unbelievable
C、doubtful
D、certain

答案C

解析 形容词辨析题。由whether可知,其结果并不是确定的,所以选[C]。
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