题目

 —________ ! Somebody has left the lab door open. —Don’t look at me. A. Dear me           B. Hi, there           C. Thank goodness D. Come on 答案：A.本题考察交际用语。“谁最后走连实验室的门也没关！”A.表惊讶，天呢！B.大家好。C.谢天谢地。D. 用语鼓励或催促对方。

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