—— 请按键盘 空白键 开始游戏 ——

The study of mathematics is the indispensable basis for all intellectual and spiritual progress.
Democracy must be born anew every generation, and education is its midwife.
有时候,最难的部分不是放手,而是学会重新开始。
We must balance energy supply with environmental protection.
我不数我的仰卧起坐。只有当它开始疼的时候,我才开始数。