单项选择题

A) reduced C) descended t5) revised D) delayed
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单项选择题
Why does the tracking system set a 100-metre minimum before sending an alarm to the operations centre
A．To leave time for the operations centre to give un alarm.
B．To keep police informed of the car's movements.
C．To give the driver time to contact the operations centre.
D．To allow for possible errors in the GPS system.
单项选择题
The author believes that a vicious circle can turn into a virtuous circle when ______.
A．women care more about education
B．girls can gain equal access to education
C．a family has fewer but healthier children
D．parents can afford their daughters' education
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