Originally posted by pyliu at 2006-1-11 16:42:. M! d- q3 c$ K i' { 問題:已知媽媽比兒子大21歲。六年後,媽媽的歲數是兒子的五倍。問爸爸現在在哪裏?
Originally posted by Tokyo2040 at 2006-1-11 09:54 AM: + o4 w8 L, u8 F# J6 j5 v爸爸喺到happy緊