单项选择题

A．Colleagues.
B．Dentist and patient.
C．Boss and secretary.
D．Teacher and student.
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单项选择题
A．Because this kind of freedom will make the administration of the factory a tough job.B．Because the machines in the factory are complicated and should not be operated at will.C．Because the management consider this freedom not important.D．Because workers usually doubt the truth of this freedom of choice.
A．Because this kind of freedom will make the administration of the factory a tough job.
B．Because the machines in the factory are complicated and should not be operated at will.
C．Because the management consider this freedom not important.
D．Because workers usually doubt the truth of this freedom of choice.
单项选择题
A．For boat racing.B．For renting.C．For speed competition.D．For the season.
A．For boat racing.
B．For renting.
C．For speed competition.
D．For the season.
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