Unit 1 The Scientist 1
Unit 2 Economic Life 11
Unit 3 Human Weaknesses 20
Unit 4 The Meaning of Work 29
Unit 5 Research Ethics 38
Unit 6 Euthanasia 48
Unit 7 Nature and Man 57
Unit 8 The Twentieth Century 65
Appendix Ⅰ:Key to Exercises(Units 1-8) 75
Appendix Ⅱ:Chinese Translations of Texts A(Units 1-8) 122
Appendix Ⅲ:Chinese Translations of Texts B(Units 1-8) 156