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【多选题】
激励强化理论中,根据强化的性质和目的,强化可分为( )两大类型。A.
物质强化
B.
正强化
C.
精神强化
D.
负强化
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举一反三
【简答题】在对流温度差大小相同的条件下，在夏季和冬季，屋顶天花板内表面的对流换热系数是否相同?为什么?
【单选题】She is already 16years old、But she____as if she were still a little girl.
A.
believes
B.
absorbs
C.
accrses
D.
behaves
【简答题】A．No, because she's already spent most of it. B．No, because she has already lent it to a friend. C．Yes, because she got some while she was shopping. D．Yes, because she wants to help him.
【单选题】---Does Miss Ye like playing __________tennis? ---No, she doesn’t, but she likes playing ________ piano.
A.
the; the
B.
/; the
C.
the; /
D.
a; a
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