Unit 1 Education Is a Key Part Ⅰ Warming up Part Ⅱ Educational systems Part Ⅲ University life Part Ⅳ University campus Part Ⅴ Video appreciation Unit 2 Colorful Lands, Colorful People Part Ⅰ Warming up Part Ⅱ The world's six billionth inhabitant Part Ⅲ Features of the earth Part Ⅳ Short talks on listening skills Focus on the MainIdea Part Ⅴ Video appreciation Unit 3 Travelling from Place to Place Part Ⅰ Warming up Part Ⅱ It's the only way to travel Part Ⅲ Villa Rentals Part Ⅳ Language study and language appreciation Part Ⅴ Video appreciation Unit 4 Approaching Culture Part Ⅰ Warming up Part Ⅱ Places to enjoy Part Ⅲ Life here and there Part ⅣInternational business Part Ⅴ Video appreciation Unit 5 Net Changes Life Part Ⅰ Warming up Part Ⅱ Network and networking Part Ⅲ Future of the Internet Part Ⅳ Short talks on listening skills Be Careful with Numbers Part Ⅴ Video appreciation Unit 6 For the Glory of Sport Part Ⅰ Warming up Part Ⅱ The sporting spirit Part Ⅲ Sports and entertainment choices Part Ⅳ Language study and language appreciation Part Ⅴ Video appreciation Unit 7 Transportation Part Ⅰ Warming up Part Ⅱ Green Transportation Festival Part Ⅲ The UN Road Safety Week Part Ⅳ Asia's cities face gridlock Part Ⅴ Video appreciation Unit 8 Trends in Economics Part Ⅰ Warming up Part Ⅱ Nobel Prize winner for economics ……Unit 9For Peace and DevelopmentUnit 10 Happy New YearUnit 11 Visions Of the FutureUnit 12 DictationVocabularyAcknowledg ements