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A．At a booking office.
B．In a Hong Kong hotel.
C．On a busy street
D．At an airport.
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单项选择题
A．5,400,000 years.B．65,000,000 years.C．8,400,000 years.D．75,000,000 years.
A．5,400,000 years.
B．65,000,000 years.
C．8,400,000 years.
D．75,000,000 years.
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