20: GWD-18-Q19

New genetic evidence—together with recent studies of elephants’ skeletons, tusks, and other anatomical features—provide compelling support for classifying Africa’s forest elephants and its savanna elephants as separate species.

A. provide compelling support for classifying

B. provide compelling support for the classification of

C. provides compelling support to the classification of

D. provides compelling support for classifying

E. provides compelling support to classify

为什么选d，e的话to do 不是优于for doing表目的吗

作者: pite82 时间: 2009-10-6 22:15

这里是provide x for y(noun)的idiom (参http://dictionary.reference.com/browse/provide 第一本字典的第8条)

没有provide x to do y的idiom

所以这里y即使是ing形式也不会产生歧义，因为idiom用法决定了这个ing表示一个noun，而不是进行时态。

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