Unit 13 Healthy eating 1
Unit 14 Festivals 11
Unit 15 The necklace 21
Unit 16 Scientists at work 30
Unit 17 Great women 39
第二学期期中检测 48
Unit 18 New Zealand 57
Unit 19 Modern agriculture 66
Unit 20 Humour 75
Unit 21 Body language 84
Unit 22 A world of fun 93
第二学期期末检测 103
参考答案及解析 112