The book was written in1946, the education system has witnessed great changes.[ ]A. when B. during whichC. since then D. since when-高中英语-n多题

◎ 题干

The book was written in 1946, the education system has witnessed great changes.

[ ]

A. when
B. during which
C. since then
D. since when

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“The book was written in1946, the education system has witnessed great changes.[ ]A. when B. during whichC. since then D. since when…”主要考查了你对【关系副词】，【介词和介词短语】，【非限制性定语从句】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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