单项选择题

What is the relationship between the two speakers

A．Salesman and customer.
B．Policeman and driver.
C．Teacher and student.
D．Boss and secretary.

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单项选择题

单项选择题

We can infer from the text that the employees of the enterprise__________.

A．would start their work by listening to a joke
B．were cold to newcomers
C．were always punctual for work
D．lacked devotion to the company

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