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精英家教網 > 高中英語 > 題目詳情

    is known to us all is that the 2012 Olympic Games will take place in London.

A.It                B.What             C.As               D.Which

 

【答案】

B

【解析】

試題分析:通過分析句子結構,可知這個句子中包含一個主語從句和一個表語從句。引導詞在主語從句中作主語,且表示什么的含義,故用What。

考點:主語從句的考查

點評:在句子中起主語作用的從句叫做主語從句。解答這類題,首先要確定從句是什么從句,然后依據相應的語法規則答題。主語從句中引導詞的確定,要看它在主語從句中作什么成分,有沒有什么實際意義。

 

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