Unit 1 Growing Up
Unit 2 Friendship
Unit 3 Understanding Science
Unit 4 American Dream
Unit 5 Romance
Unit 6 Animal Intelligence
Unit 7 Emergency
Unit 8 Coping with an Educational Problem
Appendix Ⅰ:Key to Exercises(Units1-8)
Appendix Ⅱ:Chinese Translation of Texts A(Units1-8)
Appendix Ⅲ:Chinese Translation of Texts B(Units1-8)
