Lesson One Courtesy：Key to a Happier World 1
Lesson Two Animal Education 27
Lesson Three Reading for A s 49
Lesson Four The English Character 73
Lesson Five Fathers ＆ Sons：The Bonding Process 94
Lesson Six Genetic Discovery Brings Worries As Well As Hope 115
Lesson Seven A Brief History of Stephen Hawking 139
Lesson Eight Environmental Problems 161
Lesson Nine Americans：A Definition 183
Lesson Ten Getting Enough Sleep?Dream On 206
Lesson Eleven The Writing of English 231
Lesson Twelve Cinderella s Stepsisters 252
Lesson Thirteen How to Grow Old 273
Lesson Fourteen The Web Lifestyle 299
Lesson Fifteen The Dog That Nobody Wanted 320
Lesson Sixteen The International Space Station 343
Appendix Ⅰ Key to the Exercises 363
Appendix Ⅱ Vocabulary List 413