Unit Sixteen Following the Fashion
Unit Seventeen Job-hopping
Unit Eighteen Retirement
Unit Nineteen Euthanasia
Unit Twenty Capital Punishment
Unit Twenty-one Single-sex Education
Unit Twenty-two Test-oriented Education and Quality-oriented Education
Unit Twenty-three Private School and Public School
Unit Twenty-four Economic Development and Environmental Protection
Unit Twenty-five Human Cloning
Unit Twenty-six Nature and Nurture
Unit Twenty-seven Gun-possession
Unit Twenty-eight Nuclear Energy
Unit Twenty-nine Competition and Cooperation
Unit Thirty Economic Globalization
Appendix Ⅰ Reference Answers
Appendix Ⅱ English Speech Evaluation Criteria of American Students
Appendix Ⅲ Debate Topics