单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．Patient and nurse
B．Teacher and student
C．Secretary and client
D．Guest and receptionist
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单项选择题
A．In a geography class.B．In an astronomy class.C．In a geology class.D．In a biology class.
A．In a geography class.
B．In an astronomy class.
C．In a geology class.
D．In a biology class.
单项选择题
A．A soldier.B．An officer.C．A Priest.D．A guard,
A．A soldier.
B．An officer.
C．A Priest.
D．A guard,
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