—— 请按键盘 空白键 开始游戏 ——

每天学习,尤其是从别人的经验中学习。它更便宜!“——约翰·博格尔
Be careful who you hate, it could be someone you'll have to work with someday.
It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.