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题目
题型:不详难度:来源:
In time of serious accidents, ________ we know some basic things about first aid, we can save lives.
A.whetherB.untilC.ifD.unless

答案
C
解析

试题分析:句意:面对严重的事故,如果我们懂得一些基本的急救知识,我们就可以挽救生命。A是否,即使;B直到;C如果;D除非。根据句意可知前句是后句的假设条件,故答案选C。
核心考点
试题【In time of serious accidents, ________ we know some basic things about first aid】;主要考察你对连词等知识点的理解。[详细]
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