单项选择题

The ______ of living has kept rising in recent years.

A．expense
B．cost
C．price
D．bill
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单项选择题
______ man is ______ reasoning animal.
A．The, a
B．The, the
C．/, /
D．/, a
单项选择题
An inspection team is on a ______ of the city.
A．trip
B．travel
C．tour
D．journey
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