单项选择题

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

A．Mother and father.
B．Mother and son.
C．Teacher and student.
D．Two students.
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单项选择题
A．To have his blood tested early.B．To take food rich in vitamins.C．To have regular vitamin injections.D．Not to believe his doctors.
A．To have his blood tested early.
B．To take food rich in vitamins.
C．To have regular vitamin injections.
D．Not to believe his doctors.
单项选择题
A．$4,050.B．$4,150.C．$4,500.D．$5,400.
A．$4,050.
B．$4,150.
C．$4,500.
D．$5,400.
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