单项选择题

A．To save money on equipment.
B．To instruct newcomers about bicycle maintenance.
C．To ensure that everyone knows about the historical sites.
D．To help keep participants from getting lost.
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C
单项选择题
A．It was made of aluminum. B．It wasn’t large enough. C．It wouldn’t move in the wind. D．It was too heavy to put up.
A．It was made of aluminum.
B．It wasn’t large enough.
C．It wouldn’t move in the wind.
D．It was too heavy to put up.
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