单项选择题

How long did the Pony Express exist

A．61 yeah,
B．6 months,
C．One year.
D．18 months.
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单项选择题
According to the passage, the Pony Express riders ore ______.
A．orphans
B．well over 18
C．skillful cart-drivers
D．courageous and brave young men
单项选择题
What is the usage of the Pony Express
A．To help people travel from coast to coast.
B．To train riders for competition.
C．To transfer materials and messages.
D．To arrest criminals in the West.
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