分享：Obama开罗演讲：A New Beginning
即便是高大全的正面宣传，Obama也是显得那么有魅力。内容次要，看看怎么学prensentation skills吧。
（下面这个来自youtube，可能要翻墙，不然看不到）
Download .mp4 (582.8 MB) | Download .mp3
刚才说内容随便看看，但是下面这段写的相当不错。
For we have learned from recent experience that when a financial system weakens in one country, prosperity is hurt everywhere. When a new flu infects one human being, all are at risk. When one nation pursues a nuclear weapon, the risk of nuclear attack rises for all nations. When violent extremists operate in one stretch of mountains, people are endangered across an ocean. When innocents in Bosnia and Darfur are slaughtered, that is a stain on our collective conscience. (Applause.) That is what it means to share this world in the 21st century. That is the responsibility we have to one another as human beings.