Health experts in many countries still _________ their ideas about the relationships between our foo

题目简介

Health experts in many countries still _________ their ideas about the relationships between our foo

题目详情

Health experts in many countries still _________ their ideas about the relationships between our food and our health.
A.have testedB.testedC.are testingD.test
题型:单选题难度:中档来源:不详

答案

C

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