单项选择题

A．It’’s going to attract a lot of students.
B．It’’s going to be a lot of fun.
C．It’’s going to require a lot of reading.
D．It’’s going to work out quite well.
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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 an 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.
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