This approach, ______ more expensive than the basic one, provides us with considerably more usage flexibility.A.asB.sinceC.whileD.if
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C解析试题分析:考查连词。A.as因为,一边...一边,尽管(要用倒装)B. since既然,自从...以来C.while当...时候,尽管D.if如果。句意:这种方法,尽管比基本方法更昂贵,但我们提供了更多的使用灵活性。故选C考点:考查连词。
点评:不同的连词要放在上下文中进行考查,要注意一词多义,如本题中as ,while均有“尽管”之意,但as要用倒装,while不能用倒装。即学即练:We need some more facts and figures __________ we take the final decision.A. since B. before C. after D. until选B