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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热门试题

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

单项选择题

Your hair wants ______. You'd better have it done tomorrow.

A．cut
B．to cut
C．cutting
D．being cut