WorkbookUnit One：Disappearing Forests 1
Unit Two：The Sixth Extinction 8
Unit Three：Future of Energy 15
Unit Four：Will We Run out of Gas? 23
Unit Five：Little Emperors 30
Unit Six：The Forbidden City 37
Unit Seven：Civil Rights 45
Unit Eight：The Most Admired Persons in History 52
Unit Nine：Doctors Without Borders 60
Unit Ten：Champagne 67
Unit Eleven：Play 74
Unit Twelve：Leisure 81
Unit Thirteen：Advertising on the Internet 88
Unit Fourteen：Part A Virtual Robots 96
Part B Cyber-terrorism 100
Unit Fifteen：Internet Privacy 106