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