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问题 单项选择题

某药与Na2CO3共热，酸化后有白色沉淀产生，并产生醋酸臭气，此药物为

A．对氨基水杨酸钠

B．利多卡因

C．苯甲酸钠

D．阿司匹林

E．普鲁卡因

答案

参考答案：D

判断题

货币是价值尺度和流通手段的统一。（）
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单项选择题

What does the man mean
[A] He wants to go with there,
[B] He is not interested in going with them.
[C] He will invite his friends and go with them.
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