摘要： [2010·河北石家庄市二模] is known to us all is that the 2012 Summer Olymic Games will take place in London. A. It B. What C. As D. Which 10B 此题考查主语从句的连接词.What在主语从句中作主语.句意为:我们大家所知道的是2012夏季奥运会在伦敦举行.

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