单项选择题

How long did the Pony Express Exist

A．61 years.
B．6 months.
C．One year.
D．18 months.
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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 ridem for competition.
C．To transfer materials and messages.
D．To arrest criminals in the West.
单项选择题
I will be glad to get acquainted ________ the girl you introduced.
A．on
B．with
C．to
D．by
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