◎ 题干
The water will be further polluted unless some measures _____.

A. will be taken
B. are taken
C. were taken
D. had been taken
◎ 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“The water will be further polluted unless some measures _____. [ ]A. will be taken B. are taken C. were taken D. had been taken …”主要考查了你对  【一般现在时的被动语态】  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。