Hi everybody. Today, I'm at Del Sol High School, in Las Vegas, to talk with students and families about immigration. We are a nation of immigrants. It has always given America a big advantage over oth
Now, we've talked a little bit about how to talk to someone who's lying and how to spot a lie. 我们谈论了如何与一个说谎的人说话，如何辨别一个谎言。 And as I promised, we're now going to look at what the truth looks like. 刚才说过，
Welcome to Expo 2010! 欢迎您于2010年来参观上海世博会！ The full title of Expo 2010 is World Exposition Shanghai China 2010. It is organized by Chinese Government, and operated by the city of Shanghai .The Expo 2010
