单项选择题

What will the operations centre do first after receiving an alarm

A．Start the tracking system.
B．Block the car engine.
C．Contact the car owner.
D．Locate the missing car.
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单项选择题
What is essential in making a modern car tougher to steal
A．A coded ignition key.
B．A special cellphone signal.
C．A unique ID card.
D．A GPS satellite positioning receiver.
单项选择题
The author argues that educating girls in developing countries is ______.
A．troublesome
B．rewarding
C．labor-saving
D．expensive
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