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【单选题】
药物与受体结合时采取的构象为A.
最低能量构象
B.
反式构象
C.
优势构象
D.
药效构象
E.
扭曲式构象
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举一反三
【单选题】Cindy could hardly speak English three years ago, ________?
A.
couldn't she?
B.
could she
C.
can she
D.
didn't she
【单选题】Cindy could hardly speak English three years ago, ?
A.
couldn't she
B.
could she
C.
can she
D.
Is she
【单选题】Cindy could hardly speak English three years ago, ________?
A.
couldn't she?
B.
could she
C.
can she
D.
can't she
【多选题】健身气功在比赛中()累计扣分最高为0.4分
A.
同一错误在同一动作中出现多次
B.
同一错误在同一动作中出现一次
C.
同一动作出现多种错误
D.
同一动作出现一种错误
E.
多人次在同一动作中出现错误
【单选题】Cindy could hardly speak English three years ago, ________?
A.
couldn't she?
B.
could she
C.
can she
D.
can not she
【单选题】Cindy could hardly speak English three years ago, ________?
A.
couldn't she?
B.
could she
C.
can she
【单选题】Good news for all Chinese middle school students in the countryside. They don't have to pay for school _____. [ ]
A.
any more
B.
no more
C.
so far
D.
no longer
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