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【单选题】
通用货架与专用货架的划分标准是( )。A.
封闭程度
B.
制造材料
C.
适用性
D.
结构特点
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【单选题】听力原文：W: I have to think about your offer. I can't say yes or no at the moment. M: You can take your time. It is OK if you let me know your decision in a day or two. Q: What does the man mean? (19)
A.
He thinks the woman is wasting her time.
B.
He thinks the woman should make full use of her time.
C.
He is eager to know the woman's answer.
D.
He thinks there is no need for the woman to hurry.
【单选题】在知觉过程中，人用过去所获得的有关知识经验，对感知的事物进行加工处理，并用概念的形式把它们标示出来的特性，这是知觉的（）
A.
选择性
B.
整体性
C.
理解性
D.
恒常性
【单选题】Can you explain _____ all of us the reasons ____ your decision? We can’t understand it.
A.
to ; of
B.
/ ; of
C.
to ; for
D.
/ ; for
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