求助gwd一题

Joseph_lin

Scientists claim that the discovery of the first authenticated mammal bones in amber could provide important clues of determining, in addition to how, when mammals colonized the islands of the West Indies.

A.    of determining, in addition to how, when mammals colonized the islands of the West Indies
B.    in the determination of how and when the islands of the West Indies were colonized by mammals
C.    to determine how mammals colonized the islands of the West Indies and when they did
D.    for determining when the islands of the West Indies were colonized by mammals and how they were
E.    for determining how and when mammals colonized the islands of the West Indies
这道题答案是E，请问这里用To do和for doing都可以吗？和不定式的逻辑主语有关系吗？谁能说说不定式的逻辑主语的问题吗？

perain

感觉这题和to do 还是for doing的关系不大 ，其他的考点就能判断出是E啦

Joseph_lin

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