问题
选择题
On June 16, 2012, it arrested the world’s attention ______ Shenzhou9 spacecraft was successfully sent into the sky with the first Chinese woman astronaut.
A．that
B．what
C．if
D．why
答案
答案：A
本题中的it为形式主语，真正的主语从句位于句尾，通常用关系词that来连接，故本题选A。