【題目】When I put a finger to my lips, it’s a _____ for you to be quiet.

A.signalB.missionC.contractD.demand

【答案】A

【解析】

考查名詞辨析。句意:當(dāng)我把手指放在嘴唇上時,這是一個讓你安靜的信號。A. signal信號;B. mission任務(wù);C. contract合同;D. demand命令。結(jié)合句意可知選A。

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