Question

【題目】It is uncertain ________ side effect the medicine will bring about, although about two thousand patients have taken it.

A. that B. what C. how D. whether

Answer 1

【答案】B

【解析】還原主語從句中的主干是the medicine will bring about ______ side effect。故選擇what，形容詞“什么樣的”，起修飾作用。句意：盡管大約有兩千名病人服用過這種藥物，但是，它會(huì)帶來什么樣的副作用還不確定。