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【判断题】
由磁矩测出在 [ Mn (H 2 O) 6 ] 2+ 中,中心离子的 d 轨道上有 5 个未电子,所以可知, [ Mn (H 2 O) 6 ] 2+ 的中心离子 d 轨道分裂能小于电子能
A.
正确
B.
错误
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【简答题】English and English Community 1 There is no doubt that English is a useful language. The people who speak English today make up the largest speech community in the world with the exception of speakers...
【单选题】There is no doubt the earth is becoming warmer.
A.
whether
B.
that
C.
if
D.
why
【判断题】Xiaoyu goes back home every day. ()
A.
正确
B.
错误
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A.
甘草皂苷
B.
柴胡皂苷
C.
人参皂苷
D.
知母皂苷
E.
木脂素苷
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【单选题】There is no doubt _____ he’s an honest boy ,so there is no doubt _____ his honesty.
A.
whether ;for
B.
that ;of
C.
what ;about
D.
why; of
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A.
is cumbersome
B.
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C.
varies wildly
D.
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A.
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B.
节制欲望,青少年最好避免过早性行为。
C.
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A.
. how
B.
. why
C.
. if
D.
. that
【单选题】Which of the following tag questions is INCORRECT?
A.
There is no doubt about it, is it?
B.
No one was hurt, were they?
C.
She seldom goes to the theatre, does she?
D.
I don't think he is bright, is he?
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