单项选择题

A．To save money on equipment.
B．To instruct newcomers to learn bicycle maintenance.
C．To ensure that everyone knows about the historical sites.
D．To help keep participants from getting lost.
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单项选择题
A．Any job with a high salary.B．An average job with a low salary.C．A boring job with a high salary.D．An exciting job with an average salary.
A．Any job with a high salary.
B．An average job with a low salary.
C．A boring job with a high salary.
D．An exciting job with an average salary.
单项选择题
A．Monday, Wednesday, and Friday.B．Saturday and Sunday.C．Tuesday and Saturday.D．Tuesday and Thursday.
A．Monday, Wednesday, and Friday.
B．Saturday and Sunday.
C．Tuesday and Saturday.
D．Tuesday and Thursday.
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