单项选择题

A．Doctor and patient.
B．Student and teacher.
C．Sales assistant and customer.
D．Manager and officer clerk.
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单项选择题
A．They are the same person.B．One is a doctor and the other is a writer.C．Both of them are teachers.D．They are from different departments.
A．They are the same person.
B．One is a doctor and the other is a writer.
C．Both of them are teachers.
D．They are from different departments.
单项选择题
A．It’s too broad to cope with.B．It’s a bit outdate.C．It’s controversial.D．It’s of little practical value.
A．It’s too broad to cope with.
B．It’s a bit outdate.
C．It’s controversial.
D．It’s of little practical value.
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