Unit One

Big Bucks the Easy Way

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Two

Deer and the Energy Cycle

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Three

Why Do We Believe That the Earth Is Round?

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Four

Jim Thorpe

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Five

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

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Six

How to Mark a Book

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Seven

The Luncheon

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Eight

The New Caves

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Nine

Journey West

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Unit Ten

Why People Work

Notes to the Text

Notes to Exercises and the Reading Activity

Key to Exercises

Test Paper Ⅰ (Units 1-3)

Test Paper Ⅱ (Units 4-6)

Test Paper Ⅲ (Units 7-8)

Test Paper Ⅳ (Units 9-10)

Practice Test for Band Four

Appendix

Key to Test Papers

Test Paper Ⅰ

Test Paper Ⅱ

Test Paper Ⅲ

Test Paper Ⅳ

Practice Test for Band Four