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【单选题】
左旋多巴可以治疗肝性脑病的机制是A.
在肝脏中经脱羧转变为多巴胺
B.
在中枢经脱羧转变为多巴胺
C.
在中枢增加NA合成而起作用
D.
在中枢直接发挥作用
E.
改善肝功能
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反馈参考答案：
举一反三
【单选题】What's the strike union made up of?
A.
Ambulance staff and dentists.
B.
Dentists and family doctors.
C.
All of the above.
【单选题】What’s the strike union made up of?
A.
Ambulance staff and dentists.
B.
Surgeons and family doctors.
C.
All of the above.
【简答题】The strike was heated up by the ___________ speech.
【单选题】According to the older woman, her illness had much to do with ______.
A.
her difficult life
B.
her son's rare visits
C.
her being lonely
D.
her son's stressful work
【单选题】She is worried about her final exams her illness.
A.
unless
B.
even though
C.
because
D.
because of
【单选题】The union threatened a strike but called it______at the last minute.
A.
off
B.
out
C.
back
D.
up
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