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问题 单项选择题

以《营卫生会》为据，老人夜不瞑的原因是（）

A.年老体弱，肾气不足

B.心气不足，心神失养

C.心肾亏虚，水不济火

D.营气衰少而卫气内伐

E.以上均不是

答案

参考答案：D

单项选择题

下列哪种疾病是既往可能不存在，确实是人类新发现的传染病（）。

A.戊型肝炎

B.军团病

C.流行性出血热

D.莱姆病

E.艾滋病
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单项选择题

A continuous market most likely exists for a stock when:()

A. an overnight buildup of buy and sell orders for the stock occurs.

B. new information about the company is continuously released to market participants.

C. numerous dealers are willing to make a market in the stock at any time that the market is open.
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