标题: 急问PREP九套题里面的一道题 [打印本页] 作者: bohrning 时间: 2011-8-16 11:13 标题: 急问PREP九套题里面的一道题 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
正确答案是D，可我怎么看也应该是C啊！are not A, but B，不是么？作者: AlohaDJ 时间: 2011-8-20 02:52
,favored because they enhance reproduction or survival,...