28-1: 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 网上很多G友的答案为E，但是我有一点不明provide sth for doing这种用法是否可行？是否to determine更好些？
there's another Gwd that has a question in which "evidence for doing sth". I think all should check it out. Clue for doing sth and evidence for doing sth should be the same.
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发表于 2005-10-7 16:18:00
