四级标准听力测试模拟五Section A答案解析(4)

　　M: But that doesn’t eliminate cost. The reprocessing isn’t done for nothing.

　　W: But electricity from a nuclear-powered station is cheaper than from a coal-fired plant, isn’t it?

　　M: Well, the cost of operation of nuclear stations is only half the cost of even the leastexpensive coal-fired stations. And later on the figures will show an even greater advantage for nuclear energy.

　　W: But don’t nuclear stations cost more to build?

　　M: Yes, they do. However, their cheaper running gains more than offsets the construction costs.

　　W: And aren’t the nuclear stations cleaner in operation?

　　M: Yes, and they’re better looking than conventional stations and can be built in places unsuitable for conventional plants. In most cases, they are safe.

　　Questions 22 to 25 are based on the conversation you have just heard.

　　22. What are the two speakers talking about?

　　【解析】选[D]。听对话，首句问使用核能发电的优点，后面则从运营成本、清洁度以及安全性方面谈到了核能发电站的优点。听问题，问谈论的话题，概括起来就是[D]。

　　23. How many tons of coal can produce the same electricity as it can be produced by one ton of enriched uranium fuel?

　　【解析】选[B]。听音时注意数据信息，as from 75,000 tons of coal，做笔记。听问题，问多少吨煤和一吨铀产生的电量相当，[B]为细节再现。

　　24. Where is the used fuel disposed of?

　　【解析】选[D]。听音时注意提到的能源机构名称，dispatched to the United Kingdom Atomic Energy Authority，做笔记。听问题，问使用后的燃料放到哪里去？[D]为细节再现。

　　25. Which is not the advantage of the nuclear stations?

　　【解析】选[B]。听音时注意核能发电站和煤发电站的对比，[A]、[C]、[D]都是核能发电站的优点，问到nuclear stations cost more to build，回答是Yes。而题干问的是核能发电站的缺点，由此可知[B]正确。