Module 1 People and places 1
Unit 1 People around us 1
Unit 2 Travelling around the world 12
Module 2 Man's best friends 24
Unit 3 Our animal friends 24
Unit 4 Save the trees 36
Module 3 Natural elements 47
Unit 5 Water 47
Unit 6 Electricity 59
Module 4 Colourful life 70
Unit 7 Poems 70
Unit 8 From hobby to career 81
语块索引表 93
参考答案 95