Unit 1 In the Library

Unit 2 Water Sports

Unit 3 Make our World More Beautiful

Unit 4 Travel

Unit 5 Have a Good Time

Unit 6 Mainly Revision

Unit 7 A Man Who Never Gave Up

Unit 8 Marry Christmas!

Unit 9 What is it Made of?

Unit 10 When was it Built?

Unit 11 Planting Trees

Unit 12 Mainly Revision

Unit 13 The World s Population

Unit 14 Shopping

Unit 15 A Doctor for Animals

Unit 16 The Football Match

Unit 17 The Missing Necklace

Unit 18 Mainly Revision

期末考试

参考答案