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单选题
The engine gives ______ smoke and steam.
A

up

B

in

C

away

D

off


参考答案

参考解析
解析:
句意:这台机器释放出烟和蒸汽。考查词汇辨析。give off发出(光等),释放。符合句意,D项正确。give up放弃。give in投降。give away泄漏(消息);赠送。
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