单项选择题

Passage One Questions 21 to 23 are based on the passage you have just heard.

A．In a lecture hall.
B．At a radio station.
C．At the doctor’ s office.
D．In a biological lab.
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单项选择题
A．Thirty-six thousand million dollars.B．Less than thirty-six thousand million dollars.C．One hundred thousand million dollars or more.D．Less than one hundred thousand million dollars.
A．Thirty-six thousand million dollars.
B．Less than thirty-six thousand million dollars.
C．One hundred thousand million dollars or more.
D．Less than one hundred thousand million dollars.
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S32
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