单项选择题

The biggest problem when travelling internationally on business is

A．difference of culture.
B．language barriers.
C．the time differenc
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单项选择题
26（）

A．grow
B．mount
C．gain
D．improve
单项选择题
When packing for a business trip, the most important factor is to
A．make sure you will always look smart.
B．know your schedule well.
C．limit the amount of luggage you tak
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