quake25 发表于 2006-9-24 17:25

求教!!

<p>(1)120,60,24,( ),0  A</p><p>  A6 B12 C7 D8</p><p>(2)4,12,39,20( )    C</p><p> A227 B22 C228 D225</p><p>(3)-5/2,5/1,-750/8,( )      A</p><p> A375/11 B375/9 C375/7 D375/8</p>
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