问题
选择题
China's reform and opening has been going on for ________ is like about 30 years now and it's really quite remarkable.
A．that
B．which
C．what
D．it
答案
答案：C
答案：C 考查名词性从句。句意：中国的改革开放现在已经进行了大约三十年，效果非常明显。________ is like about 30 years now是介词for的宾语，该部分缺少主语，所以选起双重作用的what。
