高中英语精讲 三年级 下PDF电子书下载

Unit 13 The USA 1

Unit 14 Roots 27

Unit 15 Study skills 49

Unit 16 Social and personal 71

Unit 17 My teacher 91

Unit 18 Office equipment 109

Unit 19 New Zealand 131

Unit 20 Gandhi 158

Unit 21 Who gets the money？ 180

Unit 22 Bees 198

Unit 23 The find of the century 221

Unit 24 Finding jobs 251

补充练习参考答案 281