Unit One 1
Passage 1 How Life Began 1
Passage 2 A Night on Moorland 3
Passage 3 Henry Ford and American Automobile 8
World 8
Passage 4 Telephone and Communication 11
Passage 5 Money 13
Passage 1 The Car in the 21st Century 17
Unit Two 17
Passage 2 To Types of People 22
Passage 3 25
Passage 4 Pressure:As Molecules Collide 27
Passage 5 Mary McLeod Bethune 30
Unit Three 37
Passage 1 37
Passage 2 40
Passage 3 42
Passage 4 Reflecting on Light 45
Passage 5 Willa Cather 48
Unit Four 56
Passage 1 56
Passage 2 58
Passage 3 How Heat Is Transferred? 62
Passage 4 Facts about Dreams 66
Passage 5 Ernest Hemingway 72
Unit Five 79
Passage 1 Another Test:Bankruptcy 79
Passage 2 82
Passage 3 The Danger of Drugs 85
Passage 4 The Question of Ethics 88
Passage 5 Thomas Jefferson 95
Unit Six 106
Passage 1 106
Passage 2 108
Passage 3 110
Passage 4 Boy Dives of the Philippines 113
Passage 5 Mark Twain(Samnel LanghorneClemens) 120
Passage 1 132
Unit Seven 132
Passage 2 135
Passage 3 Where There s Smoke,There s Fire 137
Passage 4 Helping Children When a Loved One Dies … 140
Passage 5 Abraham Lincoln 148
Unit Eight 158
Passage 1 The Atom 158
Passage 2 Televison 161
Passage 3 Heat Pumps 163
Passage 4 Cloning 168
Passage 5 George Washington Carver 174
Unit Nine 182
Passage 1 The Magic of a Magnet 182
Passage 2 186
Passage 3 Sunless World 188
Passage 4 Your Risk of a Heart Attack 193
Passage 5 Frank Lloyd Wright 198
Passage 1 Weather or Not 205
Unit Ten 205
Passage 2 UFOs 209
Passage 3 The Brain 211
Passage 4 Somebody May Be Watching You 216
Passage 5 Thomas Alva Edison 224
Unit Eleven 231
Passage 1 The Moon:A Nice Place to Visit? 231
Passage 2 The Wonderful Books 234
Transformed The World 239
Passage 3 Electricity:The Forco That 239
Passage 4 How a Ballpoint Pen Works 243
Passage 5 Elizabeth Blackwell 250
Unit Tweive 259
Passage 1 259
Passage 2 The Grand Canyon 261
Passage 3 Tornadoes 264
Passage 4 Reading a Newspaper 267
Passage 5 Stephen Crane 274
Key to Exersises 279