Experiments of this kindin China before the Cultural Revolution in China. [ ]A. have conducted B. have been conducted C. had conductedD. had been conducted-高中英语-魔方格

◎ 题干

Experiments of this kind in China before the Cultural Revolution in China.

A. have conducted
B. have been conducted
C. had conducted
D. had been conducted

◎ 答案

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◎ 解析

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◎ 知识点

根据魔方格专家分析，试题“Experiments of this kindin China before the Cultural Revolution in China. [ ]A. have conducted B. have been conducted C. had conductedD. had been conducted…”主要考查了你对【过去完成时的被动语态】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。

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