—— 请按键盘 空白键 开始游戏 ——

Energy independence strengthens economies and enhances national security.
Success is a journey, not a destination.
The essence of mathematics lies in its freedom.
Play is the language of childhood, and books should speak that language too.
成功不是幸福的关键。幸福才是成功的关键。如果你热爱你所做的事情,你就会成功。