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【单选题】
肝性脑病的假性神经递质是：A.
苯乙胺和酪胺
B.
苯乙胺和谷氨酰胺
C.
苯乙胺和多巴胺
D.
苯乙醇胺和羟苯乙醇胺
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反馈参考答案：
举一反三
【单选题】Peter is very smart, polite and well-behaved, ______ he is admirable.
A.
in short
B.
in all
C.
in general
D.
in brief
【单选题】Catherine: I like him a lot because he is very, very smart, and he's pretty______.
A.
tall
B.
cute
【单选题】He was a very smart boy but he made a foolish decision this time.
A.
clever
B.
boring
C.
brave
D.
dull
【单选题】--- He worked out such different questions at a very young age. --- Oh, he ______ a very smart student then.
A.
could have been
B.
should have been
C.
might have been
D.
must have been
【单选题】Tom is a very smart lad. If he ______ to work hard, he is going to be the top of the class.
A.
will continue
B.
continues
C.
continued
D.
had continued
【单选题】—My brother gets the first prize for computer in our city today. —I am sure he be a very smart student.
A.
could
B.
should
C.
might
D.
must
【单选题】He was a very smart boy but he made a foolish decision this time.
A.
clever
B.
silly
C.
brave
D.
shy
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