A number of tests have been conducted to _________ that these drugs have no side effects.A.find outB

题目简介

A number of tests have been conducted to _________ that these drugs have no side effects.A.find outB

题目详情

A number of tests have been conducted to _________ that these drugs have no side effects.
A.find outB.look forC.make sureD.work out
题型:单选题难度:偏易来源:不详

答案

C

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