单项选择题

What cause the prices of the telephone system to lower in America

A．The materials became cheaper.
B．There was more competition.
C．More people used the phones.
D．The phones were connected across the se
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单项选择题
What eventually happened to the phone company
A．It became a huge company.
B．It was broken into smaller companies.
C．h was taken over by the government.
D．It was profitabl
单项选择题
Where was the first telephone service in America established
A．New York.
B．WashingtonD.
C． Philadelphia.
D．Chicago.
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