It is uncertain _____side effect the medicine will bring about, although about two thousand patients

题目简介

It is uncertain _____side effect the medicine will bring about, although about two thousand patients

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:浙江省高考真题

答案

B

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