单项选择题

A．Inland transportation in the nineteenth century.
B．Historical aspects of mail delivery.
C．Vehicles currently in use by the postal service.
D．The invention of the railroad.
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单项选择题
A．Students are not required to attend regular class lectures. B．The professor records class lectures for review. C．Classes are held at various locations throughout the area. D．Students receive credit for work experience.
A．Students are not required to attend regular class lectures.
B．The professor records class lectures for review.
C．Classes are held at various locations throughout the area.
D．Students receive credit for work experience.
单项选择题
A．Because he thinks he can use the material in class. B．Because he knows some of the people in the program. C．Because he already saw the first three episodes. D．Because he is especially interested in the topic of the program.
A．Because he thinks he can use the material in class.
B．Because he knows some of the people in the program.
C．Because he already saw the first three episodes.
D．Because he is especially interested in the topic of the program.
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