PETS三级教程：全国英语等级考试教程（精华版 学生自学辅导）

Unit 1 Job
Unit 2 Sports and Health
Unit 3 History
Unit 4 Population
Unit 5 Environment
Unit 6 Popular Culture
Unit 7 Mass Media
Unit 8 Industry and Technology
Unit 9 Wild Life
Unit 10 Language
Unit 11 Health and Medicine
Unit 12 Advertising
TAPESCRIPTS