单选题_____AsignalsBsymbolsCrepresentsDshows

单选题
_____
A

signals

B

symbols

C

represents

D

shows


参考解析

解析:
词义辨析题。句意:红灯向车辆和行人发出停车或停步的信号。signal (to) sb. to do sth.向某人发出做某事的信号。symbol象征。represent代表;表现。show证明;表明。

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