Please______from smoking until the aeroplane is airborne.

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问题 Please______from smoking until the aeroplane is airborne.

选项 A、refrain
B、prevent
C、resist
D、restrain

答案A

解析 refrain from表示“忍住,抑制,制止”,一般用法是refrain(sh.)from doing sth.,如:refrain from smoking(禁止吸烟)。
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