英语阅读教程 第4册 修订本PDF电子书下载

Unit 1 TWINS,GENES,AND ENVIRONMENT 1

Unit 2 YOU NEED MORE THAN A TYPEWRITER 11

Unit 3 The"Dream Mile"Becomes Reality 21

Unit 4 THE KAS FOR EZIER SPELING 31

Unit 5 What Do Americans Think? 41

Unit 6 AFRICA:Land of Problems and Promises 51

Unit 7 THE GREATEST TREASURE HUNT 62

Unit 8 Life on Other Planets 74

Unit 9 WHY I LOVE WISCONSIN 84

Unit 10 ACROSS THE SEA OF STARS 94

Unit 11 THE LOST HALF-CENTURY 104

Unit 12 THE DEATH OF A LONE OAK 114

Unit 13 OUR FIRST CONGRESSWOMAN 124

Unit 14 FORTUNE IS FICKLE 135

Unit 15 YOUR VOICE GIVES YOU AWAY 145

Unit 16 NEW BABIES ARE SMARTER THAN YOU THINK 157

Unit 17 A KILLER IS BORN 168

Unit 18 SONS OF THE SUN 179

Unit 19 ENGLISH FOR AMERICANS 190

Unit 20 FASHIONS IN FOOD 202

Unit 21 WHO DECIDES,READERS OR CRITICS? 214

Unit 22 THE ETRUSCAN ENIGMA 226

Unit 23 THE PURPOSE OF THE REPUBLIC 237

Unit 24 THE FLU:SURE NUISANCE,POSSIBLE DISASTER 249

Unit 25 The Realistic Idealist 260

Unit 26 A JAZZ TRADITION 272

Unit 27 Da Vinci's Greatest Triumph 284

Unit 28 MODERN MAN IS OBSOLETE 297

Unit 29 FLOWERING OF AMERICAN MUSIC 309

Unit 30 THE STRUGGLE FOR THE WORLD 322