Unit 1 School Life
Unit 2 Sports
Unit 3 People
Unit 4 Health
Unit 5 Health Problems
Unit 6 Colleges and Universities
Unit 7 Languages
Unit 8 Fables and Fairy Tales
Unit 9 Plants
Unit 10 Nature
Unit 11 Fashion
Unit 12 Great Inventions
Unit 13 Medical Problems
Unit 14 Geography
Unit 15 Art and Literature
Unit 16 Science
Unit 17 Stories of Human Life
Unit 18 Entertainment
Unit 19 Customs and Traditions
Unit 20 History Stories and Legends
Unit 21 Mysteries and Accidents
Unit 22 Food Safety
Unit 23 Tourist Attractions and Their Protections
Unit 24 Social Studies
Unit 25 Social Problems
Unit 26 Wars and Conflicts
Unit 27 Attitude Towards Life
Unit 28 The Internet and Cyber-Security
参考答案
