问题
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Students and scholars have long known that the American Indians were not really IndiansA.t
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共用题干It is well一known that life expectancy is long
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共用题干It is well一known that life expectancy is long
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共用题干It is well一known that life expectancy is long
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共用题干It is well一known that life expectancy is long
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共用题干It is well一known that life expectancy is long