我们都身处在由朋友、家人、同事等所构建的庞大的社会网络之中。波士顿哈佛大学医学院的医学社会学家尼古拉斯 克里斯塔基斯Nicholas Christakis追踪发现了一系列的特质──诸如快乐和肥胖──是如何从一个人传递到另一个人的，解释了你在社会网络中所处的地位是如何以你意想不到的方式影响着你的生活。 Nicholas Christakis：The hidden influence of socia
As everyone knows,English is very important today.It has been used everywhere in the world.It has become the most common language on Internet and for international trade. If we can speak English well,
For my brothers Carl and Johann Beethoven 献给我的兄弟卡尔和约翰贝多芬 Oh you men who think or say that I am malevolent, stubborn, or misanthropic, how greatly do you wrong me. You do not know the secret cause whic
Mr. Chief Justice, my dear friends, my fellow Americans: 尊敬的大法官，朋友们，同胞们： The oath that I have taken is the same oath that was taken by George Washington and by every President under the Constitution.
