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题目
题型:不详难度:来源:
You should not go rafting ________ you know how to swim.
A.ifB.if notC.whenD.unless

答案
D
解析

试题分析:考查连词辨析。A如果;B如果不;(其中的not要与…分开);C当…时;D除非;如果…不…;句意:如果你知道如何游泳,你本不应该去漂流。故D正确。
点评:连词的词义辨析要放在上下文的语境中进行,要注意上下文的语义的串联以及逻辑关系的推理,特别要注意一些连词和时间状语的固定搭配。
核心考点
试题【You should not go rafting ________ you know how to swim.A.ifB.if notC.whenD.unle】;主要考察你对连词等知识点的理解。[详细]
举一反三
---- Are your family ready for rafting?
----Yes, I really want my children to experience that       they are young.
A.B.if C.unlessD.while

题型:不详难度:| 查看答案
—My son is addicted to computer games. He is hopeless, isn"t he?
—Yes, _____ he is determined to give up and start all over.
A.ifB.whenC.even ifD.unless

题型:不详难度:| 查看答案
___________Mrs Smith worked day and night, he found it difficult to make enough money to support such a large family.
A.SinceB.IfC.OnceD.Although

题型:不详难度:| 查看答案
The number of private cars in urban areas should be limited ___________the number of public buses should be increased.
A.whenB.while C.unlessD.until

题型:不详难度:| 查看答案
Sorry to say it will be years _______ we really have classes here with only 25 students.
A.sinceB.that C.whenD.before

题型:不详难度:| 查看答案
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