prep07 74 题，逻辑主语补出，not...but平行问题，求><

FrancisEvens

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
(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


正确答案选D
语法笔记说：(B) due to +动词的抽象名词形式,表达不够有效; they多余, 破坏了 sth/sb be not… but (be)…的结构
可是不能把they看成逻辑主语的补出么？表达不够有效应该算是相对性错误哦？
求前辈们解惑啊谢谢谢谢O(∩_∩)O