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题目
题型:不详难度:来源:
Keys _______ opening the lock in the door.
A.used forB.are usedC.are used toD.are used for

答案
D
解析

试题分析:to到,向,表示动作的对象,目的等;for为了,表示动作的目的,原因等;句意:钥匙是用来开门上的锁的。结合语境可知本句主语是动作对象,故用被动语态,本句中介词表示动作的目的和原因,故选D.
核心考点
试题【Keys _______ opening the lock in the door.A.used forB.are usedC.are used toD.are】;主要考察你对介词的分类等知识点的理解。[详细]
举一反三
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题型:不详难度:| 查看答案
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题型:不详难度:| 查看答案
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A.What , byB.How , byC.What , withD.How , with

题型:不详难度:| 查看答案
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A.toB.forC.atD.of

题型:不详难度:| 查看答案
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A.toB.for itC.withD.with it

题型:不详难度:| 查看答案
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