They were trying to remove harmful ______ from cigarettes.A.contentB.substancesC.materialsD.mixture

题目简介

They were trying to remove harmful ______ from cigarettes.A.contentB.substancesC.materialsD.mixture

题目详情

They were trying to remove harmful ______ from cigarettes.
A.contentB.substancesC.materialsD.mixtures
题型:单选题难度:偏易来源:不详

答案

B
此处意思:物质,物体,B项有此意。

更多内容推荐