I have been asked to speak to you about leadership and the qualities that leaders will need in the 21st century to bring about positive change in the world about them. I would like to approach my topi
新当选美国总统奥巴马11月4日晚在家乡芝加哥发表胜选感言。他说：美国目前主要面临的三大挑战：伊拉克和阿富汗战争、百年一遇的经济危机以及全球环境问题。 If there is anyone out there who still doubts that America is a place where all things are possible; who still wonders if the
OK. So, that's the first night. And this one is now 67, and that's not a good score. 好的，这是第一个晚上。这天晚上我得了67分，这不是很好的分数。 And this tells you, of course, how much you had in REM sleep, in deep sleep, and al
