What is most remarkable about the proposal made by the two scientists? The passage is mainly written to ______.

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问题 What is most remarkable about the proposal made by the two scientists?
The passage is mainly written to ______.

选项 A、introduce a new concept
B、compare different energy sources
C、stress the importance of gasoline
D、discuss solutions to global warming

答案A

解析全文重点介绍汽油为什么是完美的燃料。第一段简要陈述这个新概念。第二段对新概念进行详细的解释和阐述。第三段列举出现在解决全球变暖的几项方案，并指出这些方案所存在的问题。最后一段，通过其他科学家对这个概念的评述，再一次给予肯定。故选A。其他选项均不是原文的重点。

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