单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．A car would be like a train.
B．A car wouldn’t run into another car.
C．A car could be driven automatically.
D．The speed of a car could be kept steady.
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单项选择题
A．Three weeks.B．Three months.C．Five weeks.D．Five months.
A．Three weeks.
B．Three months.
C．Five weeks.
D．Five months.
单项选择题
A．Sending e-mails.B．Chatting in chat rooms.C．Learning things.D．Collecting information.
A．Sending e-mails.
B．Chatting in chat rooms.
C．Learning things.
D．Collecting information.
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