单项选择题

A．Declining health.
B．Lack of attention.
C．Loss of motivation.
D．Improper behavior.
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单项选择题
A．Dangerous diseases.B．Traffic accidents.C．Too many children.D．Few doctors and little medicine.
A．Dangerous diseases.
B．Traffic accidents.
C．Too many children.
D．Few doctors and little medicine.
单项选择题
A．Money.B．More lunch time.C．Pensions.D．Salaries.
A．Money.
B．More lunch time.
C．Pensions.
D．Salaries.
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