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【判断题】
能发生有效碰撞的分子，称为活化分子。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】对于价格低廉的、经常性购买的商品,消费者的购买行为是最简单的。这类商品中,各品牌的差别极小,消费者对此也十分熟悉,不需要花时间进行选择,一般随买随取。这种描述的是( )购买行为。
A.
习惯性购买行为
B.
减少失调的购买行为
C.
复杂的购买行为
D.
寻求多样化的购买行为
【单选题】______ in the mountains for a week, the two students were finally saved by the local police. [ ]
A.
Having lost
B.
Lost
C.
Being lost
D.
Losing
【简答题】谁是中国第一个登上月球的人？
【单选题】听力原文： Police in Taiwan are investigating how one man died and two others ended up in hospital after they drank bottles of popular energy drink laced with poison despite labels on the bottle saying 'Po...
A.
a suspect placing the suspected poisonous drinks on the shelves
B.
a suspect stealing bottles of drinks
C.
a suspect robbing a man of his drinks
D.
a suspect drinking the poisonous drinks
【判断题】So far as a specific transaction is concerned, an inquiry is the first real step in business negotiations.
A.
正确
B.
错误
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