Unit 13 Healthy eating 1
Unit 14 Festivals 14
Unit 15 The necklace 27
Unit 16 Scientists at work 40
Unit 17 Great women 52
Unit 18 New Zealand 64
Unit 19 Modern Agriculture 77
Unit 20 Humour 91
Unit 21 Body language 104
Unit 22 A world of fun 117
期末测试 129
参考答案 137