Unit 1 Education Is a Key
Unit 2 Colorful Lands,Colorful People
Unit 3 Travelling from Place to Place
Unit 4 Approaching Culture
Unit 5 Net Changes Life
Unit 6 For the Glory of Sport
Unit 7 Transportation
Unit 8 Trends in Economics
Unit 9 For Peace and Development
Unit 10 Happy New Year
Unit 11 Visions of the Future
Unit 12 Review
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