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问题 单项选择题 A1型题

某病发病率呈历年的一般水平，各病例间在发病时间、地点方面无明显联系，表现为散在发生，这样的发病强度即为

A．暴发

B．散发

C．大流行

D．流行

E．以上均不是

答案

参考答案：B

单项选择题

Why are mobile phones popular in China, according to the speaker a. They are considered as fashionable items. b. They keep people closer to each other. c. They are more convenient to users than fixed phones. d. They are considered time-saving devices.
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问答题

加减木防己汤功效与作用
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