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[Sentence Correction]
试题详情
题目：
Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments.
选项:
A、 due to their enhancement of reproduction or survival, but that they are
B、 due to the reproduction or survival they enhance, but they are
C、 because they enhance reproduction or survival, but
D、 because they enhance reproduction or survival, but are
E、 because of enhancing reproduction or survival, but are
答案:
D
提问：
请教英吉老师，为什么这一题不选C呢？我的理解是：CD语义上没有什么差别，而语法上C比D更并列，因为前面的not跟在are后面了，所以后面的but与not对应，不用多加一个are了
解答：
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提问：
请问老师ABD怎么比？
解答：
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