单项选择题

The word" they" in the second paragraph, the fifth sentence means ______.

A．Boston and Philadelphia
B．businesses
C．arrangements
D．letters
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单项选择题
The private postal services of the nineteenth century claimed that they could do which of the following better than the government
A．Deliver a higher volume of mail.
B．Deliver mail more cheaply.
C．Deliver mail faster.
D．Deliver mail to rural areas.
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