prep 2012 46 关于what的用法

啦啦噜啦啦 · 发表于 2013-11-16 18:18:56

While recognizing that lying often facilitates social interactions, psychiatrists are seeking to determine when they become destructive and which kinds of mental problems they can signal.
A. they become destructive and which kinds of mental problems they can signal
B. they become destructive and the mental problems that are signaled by them
C. it becomes destructive and what are the kinds of mental problems they signal
D. it becomes destructive and the mental problems that are signaled by it
E. it becomes destructive and which kinds of mental problems it can signal

正确的是E

我对正确答案没有异议，只是what到底怎么用呢？我都想不起来OG上哪道题有what作为正确答案呢？

叩谢各位大神！！

greygray · 发表于 2013-12-7 19:46:12

prep上有的。我记得是that which 和 what进行对比，这个时候选what，因为更简洁

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