单项选择题

According to the passage, "electronic mail" is a way to ______.

A．replace the old mail system
B．get electronics by mail
C．connect the users to the post office
D．communicate by personal computers or computer terminals

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单项选择题

In Para. 4, Line 2, telephone tag is ______.

A．an ability to communicate with people with ease
B．getting the wrong person on the telephone
C．an inablity to find time to telephone the person
D．an inability to contact the person you phone

单项选择题

Why is electronic mail widely used in business

A．Because it can speed up the sending of messages.
B．Because it is a fashionable gadget to the businessman.
C．Because it is cheap and efficient.
D．Because it is a part of business life.