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单项选择题

A．170,000.
B．117,000.
C．100,070.
D．100,017.
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单项选择题A．Speed control.B．The system minigap .C．The control and the motorcar.D．Two of driver’s problems.

A．Speed control.
B．The system "minigap".
C．The control and the motorcar.
D．Two of driver’s problems.

单项选择题A．They are on business.B．They are working.C．They are on holiday.D．They have a rest at home.

A．They are on business.
B．They are working.
C．They are on holiday.
D．They have a rest at home.