问题
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2,3,13,45,161,()A.288 B.366 C.475 D.573
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2,3,13,45,161,()A.288 B.366 C.475 D.573
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下面各题怎样简便就怎样算.3.7×99+3.734+16-385.37-1.47-2.53105×(13+15)13+45÷923×58+13×58.
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1/2,3/5,8/13,21/34,()。A.83/81B.45/86C.55/89D.62/91
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菲波纳奇数列:1 1 2 3 5 8 13 21 34 () 89.A 45B 47 C 5
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两种疗法比较 数据见下表:[YS161_2_45_98.gif]检验两种疗法疗效有无差别 可采用