—— 请按键盘 空白键 开始游戏 ——

The Internet is a powerful tool for education, but it is not a substitute for the teacher.
To create is to give life to something that did not exist before.
我从不猜测。这是一个令人震惊的习惯——对逻辑能力具有破坏性。
The coal industry must evolve to meet modern environmental standards, or it will become obsolete.