单项选择题

A．Environmental pollution and protection.
B．Taxes and services for the public.
C．Police efforts to protect people.
D．People’s attitude toward taxes.
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单项选择题
A．Persons who have salaries agreed to in long-term contracts.B．Persons who own businesses.C．Persons with pensions.D．Persons with slow-rising incomes.
A．Persons who have salaries agreed to in long-term contracts.
B．Persons who own businesses.
C．Persons with pensions.
D．Persons with slow-rising incomes.
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