大学英语精读 4 教师用书PDF电子书下载

Unit 1 Big Bucks the Easy Way 1

Unit 2 Deer and the Energy Cycle 16

Unit 3 Why Do We Believe That the Earth Is Round? 28

Unit 4 Flight 93:What I Never Know 41

Unit 5 To Lie or Not to Lie—The Doctor's Dilemma 54

Unit 6 How to Mark a Book 68

Unit 7 The Luncheon 81

Unit 8 The New Caves 95

Unit 9 The Education of a Physicist 108

Unit 10 Why People Work 121

Appendix 1 Key to Exercises（Unit 1-Unit 10） 135

Appendix 2 Chinese Translations of the Texts（Unit 1-Unit 10） 169

Appendix 3 Chinese Translations of the Reading Passages（Unit 1-Unit 10） 189