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[Sentence Correction]
试题详情
题目：
In the mid-1970's, since birds were overcome by pollution, and routinely falling from the sky above Los Angeles freeways, this prompted officials in California to devise a plan that reduced automobile emissions.
选项:
A、since birds were overcome by pollution, and routinely falling from the sky above Los Angeles freeways, this prompted officials in California to devise a plan that reduced
B、since birds that had been overcome by pollution were routinely falling from the sky above Los Angeles freeways, it prompted officials in California to devise a plan that would reduce
C、birds had been overcome by pollution and routinely fell from the sky above Los Angeles freeways, prompting officials in California to devise a plan that reduced
D、birds overcome by pollution routinely fell from the sky above Los Angeles freeways, prompting officials in California to devise a plan to reduce
E、birds overcome by pollution and routinely falling from the sky above Los Angeles freeways were prompting officials in California to devise a plan to reduce
答案:
D
提问：
我想问一下： 选项D中 ， overcome是什么成分？ 是修饰项吗？ 为什么是动词原形 ？ 选项C 主要错在哪里 ？ 比较DC时， 一个是plan that... 一个是 plan to 是不是这里表达会有语义的差别？ 希望老师讲解一下 怎么比较CD 谢谢
解答：
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