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AP Chinese/Unit 2 – Language and Culture in China
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游客公共卫生应用的目标
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近年来，在中国推出了许多针对旅游者定向教育性质公共卫生应用程序（app），这类app普及的主要目标是什么？

A

添加多元文化交流平台

B

提高公共卫生意识和防范措施

C

增加国内外旅游收入

D

鼓励科技创新投资

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