这是古典音乐的介绍：Classical Music(后面还有关于音乐及贝多芬的介绍) Do not be bored. Classical music can be very stimulating. Classical music began in Europe in the Middle Ages and continues today. Classical music is the art
We’ve also been trying to help our state and local governments so that they’re not having to lay off as many teachers and firefighters and police officers, and I know that -- I think the m
哈佛商学院领导力与管理教授埃米·埃德蒙森：如何将一群陌生人变成一个团队？ Amy Edmondson: How to turn a group of strangers into a team 埃米·埃德蒙森：如何将一群陌生人变成一个团队？ It's August 5, 2010. A massive collapse at the San José Copper Mine in Northern
