Unit 1 The Scientist

Unit 2 Economic Life

Unit 3 Human Weaknesses

Unit 4 The Meaning of Work

Unit 5 Research Ethics

Unit 6 Euthanasia

Unit 7 Nature and Man

Unit 8 The Twentieth Century

Appendix Ⅰ:Key to Exercises(Units 1-8)

Appendix Ⅱ:Chinese Translations of Texts A(Units 1-8)

Appendix Ⅲ:Chinese Translations of Texts B(Units 1-8)