Unit 1 Big Bucks the Easy Way Unit 2 Deer and the Energy Cycle Unit 3 Why Do We Believe That the Earth Is Round? Unit 4 Flight 93： What I Never Know Unit 5 To Lie or Not to Lie——The Doctor's Dilemma Unit 6 How to Mark a Book Unit 7 The Luncheon Unit 8 The New Caves Unit 9 The Education of a Physicist Unit 10 Why People Work Appendix 1 Key to Exercises (Unit 1 - Unit 10) Appendix 2 Chinese Translations of the Texts (Unit 1 - Unit 10) Appendix 3 Chinese Translations of the Reading Passages (Unit 1 - Unit 10)
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