It is uncertain____side effect the medicine will bring about,although about two thousand patients ha

题目简介

It is uncertain____side effect the medicine will bring about,although about two thousand patients ha

题目详情

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
题型:单选题难度:中档来源:同步题

答案

B

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