一道prep~求助

lhnstefsun

36.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
我在选项C\D之间纠结，不明白为什么不能选C因为我觉得C更对称not A，but B之一句型

阿汤

不用are是不是会让句子有疑惑？

到底是和not 后面平行还是和not前面平行？

not only  but also  才是你说的那个格式吧……  这个是我的想法……

lhnstefsun

了解了，好像是会造成疑惑