Module 1 People and places
Unit 1 People around us
Unit 2 Travelling around the world
本模块复习与测试
Module 2 Man’s best friends
Unit 3 Our animal friends
Unit 4 Save the trees
Module 3 Natural elements
Unit 5 Water
Unit 6 Electricity
Module 4 Colourful life
Unit 7 Poems
Unit 8 From hobby to career
综合复习与测试
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