Nile eis one of the longest rivers in the world.
尼罗河是世界上最长的河流之一。
Name one of the two longest rivers in the United States.
问：试举美国最长的两条河流中的任何一条。
Next question: Name one of the two longest rivers in the United States?
下一题：说出美国两条最长的河流之一。
Next question: Name one of the two longest rivers in the United States?
下一题：说出美国两条最长的河流之一。
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