Unit1 In the library 1
Unit2 Water sports 10
Unit3 Make our world more beauiful! 19
Unit4 Travel 28
Unit5 Have a good time! 36
Unit6 Mainly revision 45
Unit7 A man who never gave up 54
Unit8 Merry Christmas! 62
Unit9 What is it made of？ 71
Unit10 When was it built？ 79
Unit11 Planting trees 87
Unit12 Mainly revision 95
Unit13 The world s population 102
Unit14 Shopping 109
Unit15 A doctor for animals 116
Unit16 The football match 123
Unit17 The missing necklace 130
Unit18 Mainly revision 137
期末测试卷 144
参考答案 149