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>更新时间：2011-02-07 22:01:36 |
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会员通道1
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不能下载请报告错误,谢谢 |
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| 简 介 |
1. ________ he comes, we won’t he able to go.
A. Without B. Unless C. Except D. Even
答：B。unless“除非，如果不”，为连词，相当于于if...not。even为副词。A和C项为介词。
2. I didn’t manage to do it ______ you had explained how.
A. until B. unless C. when D. before
答：A。若选B项主句应是虚拟句式 I wouldn’t have managed to do it if you had not explained how.
3. I had a picture taken ________ there is a tower.
A. at which B. at where C. the place where D. where
答：D。where引导的是地点状语从句。
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