英语water,which seems to be so simple and common,is__makes life possible.a.thatb.whichc.whered.what

Question

英语water,which seems to be so simple and common,is__makes life possible.
a.that
b.which
c.where
d.what

Answer 1

选D.
这道题纠结的应该是B,D选项.
A,C一眼就可以知道不对了,所以就只解释B,D吧.
A,C不懂再追问吧.
这里的which seems to be so simple and common是插入语,可以去掉.
则整句话省略后,是：water,is ---makes life possible.
那么可以知道----makes life possible这句作表语从句.
而which,what都可以引导表语从句.
但是区别是：which不能充当主语,what可以.
如果这句话没有主语,就是water is makes life possible.不成立.
应为：water makes life possible.不要Is.
而用what:water is what makes life possible.成立.
what充当表语从句中的主语.