单项选择题

A．About 45 million.
B．About 5.4 million.
C．About 50 million.
D．About 4.5 million.
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单项选择题
A．She is going to Finland.B．She has visitors next week.C．She has guests at her home.D．She has just visited him this week.
A．She is going to Finland.
B．She has visitors next week.
C．She has guests at her home.
D．She has just visited him this week.
单项选择题
A．18 American undergraduates.B．18 overseas undergraduates,C．18 American postgraduates.D．18 overseas postgraduates.
A．18 American undergraduates.
B．18 overseas undergraduates,
C．18 American postgraduates.
D．18 overseas postgraduates.
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