Whats the conversation mainly about?A.A more economical diesel fuel.B.Characteristics of a
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Whats the conversation mainly about?
A.A more economical diesel fuel.
B.Characteristics of a new type of fuels.
C.Where a new energy source is located.
D.How to develop alternative energy sources.
请帮忙给出正确答案和分析,谢谢!
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正确答案:B
主旨大意题。男士因为患流感,没有上工程课。女士告诉他上课内容。通过女士的介绍:DME不会破坏臭氧层,更环保,燃烧后排放的气体是清洁的,但大量生产的造价较高。可以判断出谈话者谈论的是一种新型燃料的特点,即B项。
