Unit 1 Education(1) 1
Unit 2 Education(2) 7
Unit 3 Emotion 13
Unit 4 Outdoor Adventure and Tourist Attractions 19
Unit 5 Memorable Days and Holidays 25
Unit 6 Animals 31
Unit 7 Enterprises and Economy 37
Unit 8 Science 43
Unit 9 Family Life 49
Unit 10 Social Issues 55
Unit 11 People 61
Unit 12 Health 67
Unit 13 Habits and Hobbies 73
Unit 14 Mysteries and Explorations 79
Unit 15 Psychology 85
Unit 16 Eating 91
Unit 17 How People Differ 97
Unit 18 Life Science and Astronomy 103
Answer Key 109