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题目材料：
The average freshwater supply per person for the United States is projected to decrease $$20$$ percent from 1997 to 2025.Based on the data, which of the following was closest to the average freshwater supply per person for the United States in 1997, in cubic meters?
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A.6,000
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B.8,200
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C.8,800
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D.9,400
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E.9,900
D显示答案
