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找规律(2),1,3,1,2,4,3,4,3,4,3,4,3,勇夺智慧星,5,3,5,3,5,3,5,3,1,2,3,4,5,6,7,8,9,2,4,6,8,10,12,14,11,9,7,5,3,1,+3,+3,+5,+5,5,3,3,( ),1,5,9,13,2,12,22,32,( ),( ),( ),做一做,17,21,42,52,想一想:下一个数是多少? 你是怎样想的?,
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