When my first children's book was published in 2001, I returned to my old elementary school to talk to the students about being an author and an illustrator, and when I was setting up my slide project

I can tell you, I am truly grateful to now have my own degree from USC, 我可以告诉你们，现在我有了自己的南加州大学学位，我对此真的很感激， and I cherish this honor as well as the opportunity to speak to you. 我很珍惜这份荣誉，也很珍惜这次和你们讲话的机会。

June 22, 2007 THE PRESIDENT: Please be seated. Thank you. Rachel, thank you. Thanks for coming. Thanks for the introduction, and thanks for representing the United States. Proud to have you here. I wa

Weekly Address: A New College Scorecard (September 12, 2015) 奥巴马每周电视演讲：启动新的大学评分体系 Hi, everybody. Next week marks seven years since a financial crisis on Wall Street that would usher in some hard years

Ever since the dawning of the history of mankind, there have been myriads of diversifed inventions, discoveries, and even explorations of the mysteries of the universe. In fact, the human beings are s