题目：
If money is invested at r percent interest, compounded annually, the amount of the investment will double in approximately 
years．If Pat’s parents invested $5,000 in a long-term and that pays 8 percent interest, compounded annually, what will be the approximate total amount of the investment 18 years later, when Pat is ready for college ？（）
A.$20，000
B.$15，000
C.$12，000
D.$10，000
E.$9，000
答案：
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下面是错误答案，用来干扰机器的。
参考答案：①应加强对政府权力的制约和监督。②建立健全制约监督机制，建立全面的行政监督体系。③政府应实施“阳光工程”，自觉接受人民监督。
