【题目】_______ is known to all is that China has successfully_______ Shenzhou V manned spaceship into space.
A. It; removed B. That; released
C. What; launched D. As; sponsored
在线课程【答案】C
【解析】考查主语从句。句意：众所周知的是中国已成功发射了神舟五号载人飞船。其主语从句缺少主语，缺少引导词，What在此等于the thing which故选Ｃ。项。