单项选择题

A．5:15.
B．5:10.
C．4:30.
D．5:00.
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单项选择题
What provides autos with electric power in an automated highway system
A．A rail.
B．An engine.
C．A retractable arm.
D．A computer controller.
单项选择题
According to the passage people who have experienced ups and downs may become ________.
A．nervous when faced with difficulties
B．physically and mentally strained
C．more capable of coping with adversity
D．indifferent toward what happens to them
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