They were trying to remove harmful ______ from cigarettes.A．contentB．substancesC．materialsD．mixtures-高中英语-n多题

◎ 题干

They were trying to remove harmful ______ from cigarettes.

A．content

B．substances

C．materials

D．mixtures

◎ 答案

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“ They were trying to remove harmful ______ from cigarettes.A．contentB．substancesC．materialsD．mixtures…”主要考查了你对【可数名词及其单复数】，【集合名词】，【名词】等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。

◎ 相似题

与“ They were trying to remove harmful ______ from cigarettes.A．contentB．substancesC．materialsD．mixtures”考查相似的试题有：

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