—— 请按键盘 空白键 开始游戏 ——

"To live is to choose, but to choose well, you must know who you are and what you stand for."
The charm of mystery novels lies in the fact that they are not just about solving puzzles, but also about exploring human nature.
一个物理符号系统具备一般智能行为的必要和充分条件。