题目内容
11._______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 |
分析 我们都知道烟草里含有尼古丁和其他有害物质,所以你应该戒烟.
解答 C 考查主语从句.我们都知道烟草里含有尼古丁和其他有害物质,所以你应该戒烟.分析结构可知第二个is前是主语从句,从句中缺少主语,which强调范围内的选择,而what强调内容,所以选C.
点评 考查主语从句,在熟知所提供的单词的含义和用法的基础上与句子的语境想结合,从而做出正确的选项.
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