Unit 1 In the library 1
Unit 2 Water sports 13
Unit 3 Make our world more beautiful 25
Unit 4 Travel 37
Unit 5 Have a good time 51
Unit 6 Mainly Revision 64
Unit 7 A man who never gave up 76
Unit 8 Merry Christmas! 88
Unit 9 What s it made of？ 99
Unit 10 When was it built？ 111
Unit 11 Planting trees 122
Unit 12 Mainly Revision 134
Unit 13 The world s population 146
Unit 14 Shopping 158
Unit 15 A doctor for animals 170
Unit 16 The football match 182
Unit 17 The missing necklace 194
Unit 18 Mainly Revision 206
期末综合测试 217
参考答案 232