—— 请按键盘 空白键 开始游戏 ——

The more I write, the more I disappear.
Management brings benefits, details determine success or failure.
The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
Art should not be just a luxury object.
任何教育的改革,必须以人为本,人自己必须成为教育的中心。