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(C)(D) (D) because they enhance reproduction or survival, but are (E) because of enhancing reproduction or survival, but are
我选C,答案是D
解释说not ... but ...中的but为连词,可是又举出一个这样的例子:The rain cost not prosperity but ruin.这里的but后加ruin,怎么可能是连词?
解释说C中的but可能是介词引起because they enhance reproduction or survival, but simply random by-products的歧义,而D中在but后面补出are就可以避免这样的歧义,因为这样but只能是连词,而不可能是介词。但是,D中的are not the products.....but are simply random by-products...这里not...but平行吗?一个are在前一个are在后?
[此贴子已经被作者于2008-10-25 8:23:31编辑过] |