—— 请按键盘 空白键 开始游戏 ——

Children totally accept — and crave — family rules. “In our family we have a rule for X” is the only excuse a parent needs for setting a family policy. In fact, “I have a rule for X” is the only excuse you need for your own personal policies.
"In every story, there is a piece of the writer's soul, immortalized in ink."
Trade between two countries can be mutually beneficial, even if one of them is less efficient in the production of all commodities.
Efficiency is doing things right; effectiveness is doing the right things.
科学是人类智慧的结晶,是推动社会进步的重要力量。