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作者: shaoshao2010    时间: 2007-12-5 12:59
标题: [讨论]

A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and flames spreading more quickly.

(A) flames spreading

(B) flames spreads

(C) flames are caused to spread

(D) causing flames to spread

(E) causing spreading of the flames

答案给的是E，我的问题是A为什么不行。

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作者: sidong    时间: 2007-12-5 15:06
感觉应该是考的 making ...ing and ...ing这个动名词的平行结构吧，首先排除ABC，D没有E工整。

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作者: shaoshao2010    时间: 2007-12-6 13:03
如果用A的话，平行结构确实不如用E工整。谢谢楼上的解释^^

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