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【简答题】
[Ni(CO) 4 ] 和 [Ni(CN) 4 ] 2- 磁性的,两者在结构上是否相同?试用配位化合物的价键理论给予说明。
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反馈参考答案：
举一反三
【简答题】制作次数分布表时，怎样确定组距？
【单选题】听力原文：This is a great restaurant. (A) It is. I eat here often. (B) I need a rest, too. (C) It's not that late. (12)
A.
B.
【单选题】_______________many children like sugar, I think they had better try not to eat it too often.
A.
Because
B.
When
C.
Although
D.
If
【单选题】— Do you often eat vegetables and fruit? I think it is helpful. — Yes, I _____ you. It is good for our health. [ ]
A.
look forward to
B.
am satified with
C.
agree with
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