◎ 题干
With more forests destroyed, huge quantities of good earth _____ for the past few decades.

A. is washing away
B. has been washed away
C. are washed away
D. have been washed away
◎ 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“With more forests destroyed, huge quantities of good earth _____ for the past few decades. [ ]A. is washing away B. has been washed away C. are washed away D…”主要考查了你对  【现在完成时的被动语态】  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。