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问题 单项选择题

现实市场经济中，市场机制在一些场合不能导致资源的最优配置，这种情况被称为（）。

A.市场失灵

B.市场信息不对称

C.市场效率

D.市场信息不完全

答案

参考答案：A

选择题

“明清时期的思想文化成就具有鲜明的时代特征”，这主要是指：  [ ]

A．反封建的民主思想产生

B．古典小说蓬勃发展

C．古典科技进入总结阶段

D．戏曲艺术的繁荣
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单项选择题

The nurse teaches a client about the relationship between body position and gastroesophageal reflux. Which of the following statements by the client would indicate that he understands measures to avoid problems with reflux while sleeping

A．"I can elevate the head of the bed 4 to 6 inches. "

B．"I can elevate the foot of the bed 4 to 6 inches. "

C．"I can sleep on my back without a pillow under my head. "

D．"I can sleep on my stomach with my head turned to the left. "
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