A red light is often used as a danger ________.A．signB．signalC．signatureD．symbol_刷题宝

题干

A red light is often used as a danger ________.

A．sign	B．signal
C．signature	D．symbol

上一题下一题 0.99难度单项选择更新时间:2019-09-17 01:56:34

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同类题1

All the passengers on board sighed with ________ when the captain announced that he had solved the mechanical problems ________ the engine.

A．relief... for	B．relief... with
C．grief... for	D．grief... with

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