题目

         is known to us all is that the 2008 Olympic Games will take place in Beijing. A.It                                      B.What                               C.As                     D.Which 答案：答案  B 解析: 解析  分析题干结构“        is known to us all”是主语从句，从句中缺少主语，what引导主语从句，在从句中作主语。如果选it，需去掉all后的is;如果选as;需去掉is that。 【标签】(08福建27)

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