—— 请按键盘 空白键 开始游戏 ——

We are at a unique stage in our history. Never before have we had such an awareness of what we are doing to the planet, and never before have we had the power to do something about it.
“追求科学不仅是一种职业,而且是一种生活方式。”
There is no man, however wise, who has not at some period of his youth said things, or lived in a way the consciousness of which is so unpleasant to him in later life that he would gladly, if he could, expunge it from his memory.
农民是我们经济中唯一必须以零售价购买一切,以批发价出售一切,并支付双向运费的人。