综合英语（第四册 第二版）

Unit 1 Chinese Culture
Unit 2 Popular Culture
Unit 3 Leadership
Unit 4 History and War
Unit 5 Artificial Intelligence and Future
Unit 6 Human Foibles
Unit 7 Adolescent Problems
Unit 8 Pythagoras and Music
Unit 9 Urbanization and Civilization
Unit 10 Comedy and Tragedy
Unit 11 National Characters
Unit 12 Public Speaking