Unit 13 Healthy Eating 1
Unit 14 Festivals 13
Unit 15 The Necklace 26
Unit 16 Scientists at Work 38
Unit 17 Great Women 51
Unit 18 New Zealand 65
Unit 19 Modern Agriculture 81
Unit 20 Humor 93
Unit 21 Body Language 108
Unit 22 A World of Fun 122
期中测试题 137
期末测试题 143
参考答案 149