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With more forests being destroyed, huge quantities of good earth ________ each year.

[  ]

A.is washing away

B.is being washed away

C.are washing away

D.are being washed away

答案:D
解析:

本题考查了两个知识点.其一是主谓一致:根据 quantity的用法,quantities of+复数名词,a quantity of+单数名词,故排除 A、B项;其二考查了语态,土壤是被冲走的,故选择D.


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