单项选择题

A．It sends out signals for help.
B．It sounds an alarm to warn the driver.
C．It takes over the driving immediately.
D．It stops the car automatically.
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单项选择题
A．It would be normal if the car took just four seconds.B．It would be normal if the car took six seconds.C．It would be normal if the car took less than three seconds.D．It would be normal if the car took less than six minutes.
A．It would be normal if the car took just four seconds.
B．It would be normal if the car took six seconds.
C．It would be normal if the car took less than three seconds.
D．It would be normal if the car took less than six minutes.
单项选择题
A．This afternoon.B．This evening.C．Tomorrow morning.D．Tomorrow afternoon.
A．This afternoon.
B．This evening.
C．Tomorrow morning.
D．Tomorrow afternoon.
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