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题目
题型:不详难度:来源:
This also keeps the air,soil,water crops________ chemicals.
A.out ofB.out fromC.free ofD.rid of

答案
C
解析

试题分析:固定搭配free of…免受…的伤害;句义:这个总是能够让空气,土壤和水生物免受化学物质的伤害。根据句义说明C正确。
核心考点
试题【This also keeps the air,soil,water crops________ chemicals.A.out ofB.out fromC.f】;主要考察你对介词和介词短语等知识点的理解。[详细]
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