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题目材料：
The average number of available rooms per day in 1997 was approximately what fraction of the average number of available rooms per day in 2000?
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A.$$\frac{9}{10}$$
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B.$$\frac{3}{4}$$
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C.$$\frac{5}{8}$$
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D.$$\frac{1}{2}$$
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E.$$\frac{4}{9}$$
B显示答案
