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    7．[2010·成都三诊]It is no longer a question now the Chinese astronauts can wave our national flag in Outer space. A．where B．whether C．that D．what 7C考查主语从句的连接词.本句it是形式主语.that the Chinese astronauts can wave our national flag in Outer space是真正的主语. 【查看更多】

     

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