单项选择题

A．At home.
B．In an office.
C．In a taxi.
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单项选择题
A．Basic research.B．Develop new products.C．The dialogue doesn’t tell us.
A．Basic research.
B．Develop new products.
C．The dialogue doesn’t tell us.
单项选择题
A．In an office.B．On the street.C．On the plane.
A．In an office.
B．On the street.
C．On the plane.
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