单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A．Leaving for New York.
B．Flying back to the office.
C．Visiting the new factory.
D．Attending the Sales Meeting.
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单项选择题
If a man is seriously ill, how can information highway help him
A．He can send for a doctor from a central hospital by information highway.
B．He can use wireless telephone to consult doctors at a central hospital.
C．Doctors from different places could diagnose him at the same time on net.
D．Others can report his information to the nearest hospital as soon as possible.
单项选择题
A．whereB．whenC．whatD．which
A．where
B．when
C．what
D．which
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