单项选择题

A．They can establish links with their business associates.
B．They do not have to make any business trips.
C．They do not have to work in their offices anymore.
D．They can improve their work efficiency.
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A．Cash.B．Neither cash nor checks.C．Checks.D．Credit cards.
A．Cash.
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A．The good reasons for owning a car.B．Why a person should own a car.C．Traffic accidents caused by car drivers.D．Advantages and disadvantages of owning a ear.
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