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