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活页练(十四)单项填空＋阅读理解＋Ⅰ.单项填空 1．________ is known to us is that tobacco contains nicotine and other harmful products，so you should give up smoking. A．As B．It C．What D．Which 答案 C 解析 句意为：我们知道烟中含有尼古丁和其他有害成分，因此你应该戒烟。________ is known to us这一部分在句中作主语，是一个主语从句，主语从句中动词know缺少宾语，故用what引导。 2．When ________ the twins，you will find the differences between them. A．compared B．compare C．comparing D．compares 答案 C 解析 句意为：当比较这两个双胞胎时，你将发现他们之间的不同。本句中的主语是you，和compare构成逻辑上的主谓关系。 3．—Do you think he can get the first prize for jumping? —Impossible now.He ________ to do so，but he has just hurt his leg. A．would expect B．was expected C．has expected D．is expected 答案 B 解析 句意为：——你认为他能在跳远中得第一名吗？——现在不可能了。预计他会(得第一名)的，但是，他刚刚伤了腿。由语境可知，预计他会得第一，是发生在过去的事，故用一般过去时。 | 
