There is supposed to be a safety ______ which makes it impossible for trains to collide.A.
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There is supposed to be a safety ______ which makes it impossible for trains to collide.
A.appliance
B.accessory
C.machine
D.mechanism
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正确答案:D
解析:近形近义题。句意:应该有一种使火车不可能相撞的安全装置。本题涉及名词语义上下文理解搭配及语义相关干扰。Aappliance“器具”;B accessory“附件”;Cmachine“机器”;D mechanism装置,如the brake~刹车装置。根据词义和句意,选D 。
