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纠错
题目材料:
In Orange County, the number of acres available for development in 2000 was approximately what fraction of the total land area of the county? (1 square mile=640 acres)
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A $$\frac{3}{20}$$
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B $$\frac{1}{3}$$
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C $$\frac{2}{5}$$
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D $$\frac{1}{2}$$
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E $$\frac{3}{4}$$
D显示答案