2. 外语
  3. Now a paper in Science argues that organic chemicals in the rock come mostly from ________ on earth rather than bacteria on Mars

Now a paper in Science argues that organic chemicals in the rock come mostly from ________ on earth rather than bacteria on Mars

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问题 Now a paper in Science argues that organic chemicals in the rock come mostly from ________ on earth rather than bacteria on Mars.
选项 A、configuration
B、constitution
C、condemnation
D、contamination
答案B
解析 形似名词辨析。四个名词均以con-开头、以-tion结尾。而且A与B的词义比较接近。A. con- figuration构造，配置，地形，表示构成的方式；B．constitution结构，体质，表示结构、构成、组成，侧重“组成成分”，是可以与“bacteria on Man”形成对应的；C．condemnation遣责，判刑；D．contamination污染，污染物。根据句意和逻辑B是答案。句意为：最近《科学》杂志上有一篇论文提出，岩石中的有机物来自地球本身的结构而非来自火星细菌。
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大学英语六级

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