Book One 1
Unit 1 How To Improve Your Study Habits 1
Unit 2 Sailing Round the World 9
Unit 3 The Present 19
Unit 4 Turning off TV:A Quiet Hour 28
Unit 5 A Miserable,Merry Christmas 38
Unit 6 Sam Adams,Industrial Engineer 49
Unit 7 The Sampler 59
Unit 8 You Go Your Way,I'll Go Mine 68
Unit 9 The Brain The Most Powerful Computer in the Universe 76
Unit 10 Going Home 85
Book Two 94
Unit 1 Is There Life On Earth? 94
Unit 2 The Dinner Party 101
Unit 3 Lessons From Jefferson 109
Unit 4 My First Job 117
Unit 5 The Professor and the Yo-Yo 124
Unit 6 The Making of a Surgeon 132
Unit 7 There's Only Luck 142
Unit 8 Honesty:Is It Going Out Of Style? 151
Unit 9 What Is Intelligence,Anyway? 160
Unit 10 Profits of Praise 169
Book Three 178
Unit 1 A Brush With The Law 178
Unit 2 The Woman Who Would Not Tell 189
Unit 3 Why I Teach 198
Unit 4 Lady Hermits Who Are Down But Not Out 209
Unit 5 The Day Mother Cried 218
Unit 6 A Day's Wait 228
Unit 7 The Shelter 238
Unit 8 Daydream a Little 248
Unit 9 The Death of Hitler 258
Unit 10 The Fantastic Spurt in Technology 268
Book Four 278
Unit 1 Big Bucks The Easy Way 278
Unit 2 Deer And The Energy Cycle 286
Unit 3 Why Do We Believe The Earth Is Round 296
Unit 4 Jim Thorpe 306
Unit 5 Lie or Not to Lie—A Doctor's Dilemma 317
Unit 6 How To Mark A Book 330
Unit 7 The Luncheon 343
Unit 8 The New Caves 353
Unit 9 Journey West 363
Unit 10 Why People Work 373
自测题参考答案 383
参考文献 405