大学英语教程.4PDF电子书下载

Contents 1

Unit 1 Can We Know the Universe? 1

Unit Overview 1

Part Ⅰ Language Skill 2

Part Ⅱ Language in Context 10

Part Ⅲ Toward Productive Language 21

Unit 2 Extraterrestrial Life 34

Unit Overview 34

Part Ⅰ Language Skill 35

Part Ⅱ Language in Context 43

Part Ⅲ Toward Productive Language 53

Unit 3 Grizzly 62

Unit Overview 62

Part Ⅰ Language Skill 63

Part Ⅱ Language in Context 71

Part Ⅲ Toward Productive Language 82

Unit 4 Why Superstitions? 93

Unit Overview 93

Part Ⅰ Language Skill 94

Part Ⅱ Language in Context 102

Part Ⅲ Toward Productive Language 119

Unit 5 One Vote for This Age of Anxiety 129

Unit Overview 129

Part Ⅰ Language Skill 130

Part Ⅱ Language in Context 138

Part Ⅲ Toward ProductiveLanguage 152

Unit 6 Symptoms 163

Unit Overview 163

Part Ⅰ Language Skill 164

Part Ⅱ Language in Context 172

Part Ⅲ Toward Productive Language 188

Unit 7 We Are All Scientists 203

Unit Overview 203

Part Ⅰ Language Skill 204

Part Ⅱ Language in Context 212

Part Ⅲ Toward Productive Language 228

Unit 8 Computer Addicts 241

Unit Overview 241

Part Ⅰ Language Skill 242

Part Ⅱ Language in Context 251

Part Ⅲ Toward Productive Language 266