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 偶觉得选C 应该是provide sth to detemine 把 开始也在C和E中犹豫 觉得E的how and when mammals colonized the islands of the West Indies 比较简洁 但是C的从句的并列也没错啊. 请NN指教
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发表于 2005-11-26 18:08:00
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