the reserch on AIDS requires more money than_____

问题描述:

the reserch on AIDS requires more money than_____
A.has been put in
B.it be put in
C.haven been put in
D.it being put in
原因说明

填 A. has been put in
完整的句子是
The research on AIDS requires more money than (what) has been put in.
what 被省略了.是固定搭配句型.
翻译:艾滋病研究需要比已投入的资金更多的钱.为何能够省略 这是哪张语法中的句型我总是被问“为何能够省略”,“这是哪张语法中的句型”,“你怎么知道?”语言不只是语法,英语也是语感,语感是从接触学来的,从读和听练出来的。汉语是我的第二语言,如果我只看语法,我想我的中文水平今天会依旧滞留在幼稚园的程度,你说是不是?