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【单选题】
下列配离子中，不是正八面体构型的是（ ）。A.
[Fe(CN) ]
B.
[CrCl (NH ) ]
C.
[CoCl (en) ]
D.
[Zn(CN) ]
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举一反三
【单选题】—Who’s in the room? — Mr. Brown is. He a letter now.
A.
writes
B.
write
C.
writing
D.
is writing.
【简答题】同义句转换。 1. He handed my brother a letter this morning. He handed a letter _____ _____ _____ this morning. 2. I'd like to go to Shanghai this summer. I'd like to _____ _____ Shanghai this summer. 3. Wh...
【简答题】A．Because he had a letter of thanks. B．Because he feared that he might be killed if he refused. C．Because he gave him a demand note. D．Because he showed him a cheque payable at sight.
【简答题】A．He is coming. B．He is cooking. C．He is writing a letter. D．He is writing a paper.
【单选题】He received a letter a few days ago and not till then _____ that he had won a scholarship.
A.
did he learn
B.
he learnt
C.
does he learn
D.
did he learnt
【简答题】A．Because he had a letter of thanks. B．Because he feared that he might be killed ff he refused. C．Because he gave him a demand note. D．Because he showed him a cheque payable at sight.
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