单项选择题

In an automated highway system, all the driver needs to do is （）

A．keep in the right lane
B．wait to arrive at his destination
C．keep in constant touch with the computer center
D．inform the system of his destination by phone

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单项选择题

One significant improvement in the future car will probably be（）

A．its power source
B．its driving system
C．its monitoring system
D．its seating capacity