Unit 1 In the library 1
Unit 2 Water sports 18
Unit 3 Make our world more beautiful! 37
Unit 4 Travel 53
Unit 5 Have a good time! 70
Unit 6 Mainly revision 88
第一学期期中考试 106
Unit 7 A man who never gave up 114
Unit 8 Merry Christmas! 132
Unit 9 What is it made of? 150
Unit 10 When was it built? 166
Unit 11 Planting trees 185
Unit 12 Mainly revision 200
第一学期期末考试 218
Unit 13 The world s population 225
Unit 14 Shopping 245
Unit 15 A doctor for animals 263
Unit 16 The football match 281
Unit 17 The missing necklace 296
Unit 18 Mainly revision 310
第二学期期末考试 327