第17题: [单项选择]Our department has a large collection of books, _______are in English. A. many of which B. many of them C. many ones D. their many 参考答案:A 答案解析:本题译文:我们系收藏了一大堆书籍,其中很多都是英语书。解题分析:测试点为定语从句的用法。在A项中which指代前面的先行词“books”,引导非限定性定语从句,为正确答案。其它三项均不符合语法。