题目内容
______ is known to us all is that China has launched Shenzhou V spaceship successfully.
| A.That | B.What | C.It | D.As |
B
此题考查主语从句,其主语从句缺少主语,What在此等于the thing which,故选B项。
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| A.That | B.What | C.It | D.As |