单项选择题

以下哪个选项不属于包装的三大基本功能之一？

A.保护功能
B.便利功能
C.商业功能
D.可循环利用功能

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单项选择题

‍最常见的结核病是‌

A．肾结核
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D．肺结核

单项选择题

Ran You and Zi Lu were both students of Confucius. Ran You was _, but Zi Lu was __
A、not decisive；careless
B、careless；not decisive
C、not decisive；not decisive