Originally posted by pyliu at 2006-1-11 16:42:5 \& l+ D1 m+ P- [6 F( v4 a 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: # X: b6 [8 P* R爸爸喺到happy緊