Unit 1 Street Trees 1
Unit 2 The Quest for Extraterrestrial Intelligence 11
Unit 3 The Library Card 26
Unit 4 How Could Anything That Feels So Bad Be So Good? 39
Unit 5 The Monster 51
Unit 6 Zeritsky's Law 63
Unit 7 Look for the Rusty Lining 77
Unit 8 Debating the Unknowable 87
Appendix 1 Key to Exercises(Unit 1-Unit 8) 98
Appendix 2 Chinese Translations of the Texts(Unit 1-Unit 8) 117
Appendix 3 Chinese Translations of the Reading Passages(Unit 1-Unit 8) 137