单项选择题

A．3.
B．4.
C．5.
D．6.
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单项选择题
A．A political journalist.B．A university professor.C．A retired doctor.D．An experienced politician.
A．A political journalist.
B．A university professor.
C．A retired doctor.
D．An experienced politician.
单项选择题
A．Salesperson and customer.B．Doctor and patient.C．Receptionist and tourist.D．Lawyer and client.
A．Salesperson and customer.
B．Doctor and patient.
C．Receptionist and tourist.
D．Lawyer and client.
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