单项选择题

The rapid development of communications technology is transforming the ______ in which people communicate across time and space.

A．route
B．transmission
C．vision
D．manner
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单项选择题
He is at ______ in his description of country life.
A．better
B．best
C．his better
D．his best
单项选择题
The boy fell in front of the car but fortunately the driver stopped ______ time.
A．on
B．at
C．with
D．in
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