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【单选题】
下列分子构型中以 sp 3 杂化轨道成键的是A.
直线形
B.
平面三角形
C.
八面体形
D.
四面体形
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举一反三
【单选题】When a person sneezes, we say 'God bless you' because______.
A.
it's a tradition
B.
the person is possessed of an evil spirit
C.
the person is ill
D.
God will bless those who sneeze
【单选题】下面哪句话不是用来描述天气情况的?
A.
It’s a sunny day today.
B.
It’s hot today.
C.
Today is a good day.
【简答题】A．when they're unable to control the person's behavior. B．when the consequences of the behavior. are unpleasant. C．When the causes of the behavior. are obvious. D．When the behavior. is expected.
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