新编大学英语 1-4 级多功能同步精解 第4册PDF电子书下载

Unit One 1

Big Bucks the Easy Way 1

Notes to the Text 1

Notes to Exercises and the Reading Activity 9

Key to Exercises 11

Unit Two 19

Deer and the Energy Cycle 19

Notes to the Text 19

Notes to Exercises and the Reading Activity 25

Key to Exercises 27

Unit Three 35

Why Do We Believe That the Earth Is Round? 35

Notes to the Text 35

Notes to Exercises and the Reading Activity 41

Key to Exercises 42

Unit Four 49

Jim Thorpe 49

Notes to the Text 49

Notes to Exercises and the Reading Activity 58

Key to Exercises 62

Unit Five 69

To Lie or Not to Lie—The Doctor's Dilemma 69

Notes to the Text 69

Notes to Exercises and the Reading Activity 82

Key to Exercises 85

Unit Six 92

How to Mark a Book 92

Notes to the Text 92

Notes to Exercises and the Reading Activity 102

Key to Exercises 105

Unit Seven 113

The Luncheon 113

Notes to the Text 113

Notes to Exercises and the Reading Activity 120

Key to Exercises 124

Unit Eight 130

The New Caves 130

Notes to the Text 130

Notes to Exercises and the Reading Activity 137

Key to Exercises 140

Unit Nine 147

Journey West 147

Notes to the Text 147

Notes to Exercises and the Reading Activity 158

Key to Exercises 163

Unit Ten 171

Why People Work 171

Notes to the Text 171

Notes to Exercises and the Reading Activity 183

Key to Exercises 189

Test Paper Ⅰ (Units 1-3) 197

Test Paper Ⅱ (Units 4-6) 216

Test Paper Ⅲ (Units 7-8) 235

Test Paper Ⅳ (Units 9-10) 255

Practice Test for Band Four 274

Appendix 296

Key to Test Papers 296

Test Paper Ⅰ 296

Test Paper Ⅱ 298

Test Paper Ⅲ 300

Test Paper Ⅳ 302

Practice Test for Band Four 303