※ 引述《dounts (Donz GMAT)》之铭言：
: ※ 引述《fangmole (Dean)》之铭言：
: 74.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.
: (C) because they enhance reproduction or survival, but
: (D) because they enhance reproduction or survival, but are
: 想询问实战上C、D的解题方法/观念
: 看了Ron及语法笔记的解释仍然不太明白为何选C会造成ambiguous
: 感谢各位版上神人释疑！！
: