It is uncertain ______ side effects these weight-loss drugs will bring about, although hundreds of t

题目简介

It is uncertain ______ side effects these weight-loss drugs will bring about, although hundreds of t

题目详情

It is uncertain ______ side effects these weight-loss drugs will bring about, although hundreds of thousands of patients have taken it.
A.thatB.whetherC.howD.what
题型:单选题难度:中档来源:不详

答案

D

这句话考查的是主语从句,it是形式主语,因为是uncertain,所以主语是不确定的事,side effects缺少修饰,填what。句意是:虽然几十万患者采取了这些减肥药但是不确定它会产生什么副作用。选D。

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