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【单选题】
巴比妥类药物具有弱酸性的主要原因是( )A.
分子中含有羰基
B.
分子中含有氨基
C.
分子中含有
D.
分子中含有其他取代基
E.
分子中含有内酰胺结构，存在烯醇互变异构体
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【单选题】How to Love the World As It Is? It struck me recently that a lot of people think they know what's wrong with this world, and it also struck me that they're all wrong. Seriously-almost every political ...
A.
The world is in a mess.
B.
Humans don't know what's wrong with the world.
C.
The world is promising.
D.
Humans can't get adjusted to the changing world.
【单选题】Then the truth struck me / is confirmed by myself . He was blind.
A.
struck me
B.
is confirmed by myself
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【简答题】The words of his old teacher left a ________ impression on his mind. He is still influenced by them. A) staying not B) not to stay C) that he would not stay D) that he not stay
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