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标题: 老prep sc1 74题求教 [打印本页]

作者: wildbean 时间: 2011-11-6 23:06
标题: 老prep sc1 74题求教

74.(28503-!-item-!-188;#058&003635)

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.

(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

(D) because they enhance reproduction or survival, but are

(E) because of enhancing reproduction or survival, but are

答案选的是D,我选的是C, 但D中but 后面有are, 不是与前面not后面的内容不平行了吗？

作者: wildbean 时间: 2011-11-7 00:28
请教各位哈，感激不尽了

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