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Book one 1

Unit 1 How to Improve Your Study Habits 1

Unit 2 Sailing Round the World 7

Unit 3 The Present 13

Unit 4 Turning Off TV:A Quiet Hour 18

Unit 5 A Miserable,Merry Christmas 24

Unit 6 Sam Adams,Industrial Engineer 30

Unit 7 The Sampler 36

Unit 8 You Go Your Way,Ill Go Mine 41

Unit 9 The Brain——The Most Powerful Computer in the Universerse 47

Unit 10 Going Home 53

Book Two 60

Unit 1 Is There Life on Earth? 60

Unit 2 The Dinner Party 66

Unit 3 Lessons From Jefferson 72

Unit 4 My First Job 78

Unit 5 The Professor and the Yo-Yo 84

Unit 6 The Making of a Surgeon 90

Unit 7 There s Only Luck 97

Unit 8 Honesty:Is Is Going Out of Style? 104

Unit 9 What Is Intelligence,Anyway? 111

Unit 10 Profits of Praise 118

Book Three 125

Unit 1 A Brush With the Law 125

Unit 2 The Woman Who Who Would Not Tell 132

Unit 3 Why I Teacb 138

Unit 4 Lady Hermits Who Are Down But Not Out 145

Unit 5 The Day Mother Cried 152

Unit 6 A Day s Wait 158

Unit 7 The Shelter 164

Unit 8 Daydream a Little 171

Unit 9 The Death of Hitler 178

Unit 10 The Fantastic Spurt in Technology 185

Book Four 192

Unit 1 Big Bucks the Easy Way 192

Unit 2 Deer and the Energy Cycle 197

Unit 3 Why Do We Believe That the Earth Is Round 202

Unit 4 Jim Thorpe 207

Unit 6 HoW to Mark a Book 217

Unit 7 The New Caves 228

Unit 8 The New Caves 228

Unit 9 Journey West 232

Unit 10 Why People Work 237

Key for Refereoce 243