REMARKS BY THE PRESIDENTHONORING 2008 NASCAR SPRINT CUP CHAMPION JIMMIE JOHNSON THE PRESIDENT: Good afternoon, everyone. Please have a seat. Welcome to the White House. Just before I begin, there are
Charles C. Mann在Ted的演讲，当地球人口超100亿，我们又将如何生存？ Charles C. Mann: How will we survive when the population hits 10 billion? 当地球人口达到100亿时，我们将如何生存 How are we doing? No, no, no, by that, I meant, how are we, h
