_____, all machines are combinations of

题库2022-08-02  29

问题 _____, all machines are combinations of simpler parts such as the lever, the pulley, and the inclined plane.A.However complicated are theyB.However difficult they areC.Whether they are old or newD.No matter how complex they are

选项 A.However complicated are they
B.However difficult they are
C.Whether they are old or new
D.No matter how complex they are

答案 D

解析 句意:无论她们有多复杂,所有的机器都是由简单的部件组成的,像是杠杆,滑轮以及倾斜的滑面。句中需要采用让步状语从句,在however或no matter how引导的状语从句中,要采用正常语序,故排出A项,B、C两项意义与原文不符,故D项正确。
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