单项选择题

The travel industry plays a major role in the ______ of business, recreation, and family life.

A．sphere
B．scales
C．surplus
D．surveys
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单项选择题
of accusing his neighbor of dishonesty, the ______ man hoped that he could avoid blame by apologizing.
A．Sure
B．Guilty
C．Justified
D．Pitiful
单项选择题
Among the deaf and dumb ______ may be carried on by means of the finger alphabet.
A．communication
B．calculation
C．transportation
D．vision
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