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
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单项选择题
Where was the first telephone service in America established
A．New York.
B．WashingtonD.
C． Philadelphia.
D．Chicago.
单项选择题
Why don't all ice crystals in clouds immediately fall to Earth
A．They are balanced by the pressure of rain droplets.
B．The effect of gravity at high altitude is random.
C．They are kept in the sky by air current.
D．They are moving about with fixed direction.
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