Originally posted by pyliu at 2006-1-11 16:42:, z% A& h9 y2 R% \ 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: 4 s' c8 l) @ a+ i3 F, J$ i爸爸喺到happy緊