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【单选题】
下列具有不同d n 电子构型的离子中，哪种离子在弱的八面体场中具有最大的CFSE（）A.
d 4
B.
d 5
C.
d 6
D.
d 7
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反馈参考答案：
举一反三
【多选题】Listening exercise 1
A.
a good way to learn a foreign language
B.
a chance to travel the world
C.
a chance to widen her horizons and deepen her knowledge
D.
to make friends with foreigners
E.
to have close contact with other cultures
F.
to develop social skills and diversify her life
【简答题】Listening Exercise 1
【多选题】Listening exercise 1---Dialogue 1
A.
David played football with a mask on his face.
B.
David was not happy about his football match.
C.
The football match was great.
D.
The football match was cancelled.
【多选题】Listening exercise 1 (Dialogue 1)
A.
How may I help you?
B.
What can I do for you?
C.
Hold the line, please.
D.
Can you hold for a moment?
E.
Would you like to leave a message?
F.
Anything I can do for you?
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