单项选择题

To have a clear knowledge of your business running, you must

A．go to the front lines frequently.
B．listen to your associates carefully.
C．talk to your customers.

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单项选择题

A．drawing
B．attracting
C．winning
D．raising

单项选择题

To have a clear knowledge of your business running, you must 您的浏览器不支持 audio 元素。