Module 1 Nature and environment 1
Unit 1 Trees 1
Unit 2 Water 21
Unit 3 Electricity 38
Module 2 Mass media 57
Unit 4 Newspapers 57
Unit 5 Magazine articles 76
Module 3 Leisure time 100
Unit 6 Travel 100
Unit 7 Poems 118
Mid-term Exam(A) 137
Mid-term Exam(B) 140
Final Exam(A) 143
Final Exam(B) 146
参考答案 149