CONTENTS 1
Lesson One From Slave to Teacher（1） 1
Lesson Two From Slave to Teacher （2） 18
Lesson Three Better Known as Mark Twain （1） 30
Lesson Four Better Known as Mark Twain（2） 42
Lesson Five The Human Body 52
Lesson Six Swim Your Way to Fun and Health 62
Lesson Seven Space and Man 72
Lesson Eight Forty Years in China-and More 87
Lesson Nine Mysteries of Migration 103
Lesson Ten Happy New Millennium（1） 115
Lesson Eleven Happy New Millennium（2） 128
Lesson Twelve On Discipline 143
Lesson Thirteen Shakespeare 164
Lesson Fourteen The Daily Newspapers 180
Lesson Fifteen Public Libraries 194
Lesson Sixteen Two Letters（1） 210
Lesson Seventeen Two Letters （2） 226
Lesson Eighteen English（as a native，second，and foreign lan-guage） 244
Vocabulary List 261