Unit 1 The Rainbow of Science（科技之王）
Section A：Text A：Danger in Space
Section B：Exercises
Section C：Text B：Freedom from Pain
Section D：Grammar Focus：Tag Question
Section E：Reading for Delight：True Love
Unit 2 Language Study（语言研究）
Section A：Text A：The Language of the Bees
Section B：Exercises
Section C：Text B：The Whistle Language of La Gomera
Section D：Grammar Focus：Preposition
Section E：Reading for Delight：Counting Chickens
Unit 3 Moving Stories（感人故事）
Section A：Text A：The Car Is Wairing
Section B：Exercises
Section C：Text B：A Lesson in Love
Section D：Grammar Focus：Modal Verb
Section E：Reading for Delight：A Housing Problem
Unit 4 Short Stories（短篇故事）
Section A：Text A：Two Loaves of Bread
Section B：Exercises
Section C：Text B：A Piece of Hair Ribbon Makes a Big Change
Section D：Grammar Focus：Compound Sentences
Section E：Reading for Delight：Dirty Hands
Unit 5 American Dream（美国梦）
Section A：Text A：The Mayflower
Section B：Exercises
Section C：Text B：What iS an American？
Section D：Grammar Focus：Translation Skill
Section E：Reading for Delight：The Guiltar Player
Test Paper 1
Unit 6 Adventure Stories（历险故事）
Section A：Text A：Love Saved Their Lives
Section B：Exercises
Section C：Text B：Survivors from Surging Sea
Section D：Grammar Focus：Writing Skill（Ⅰ）
Section E：Reading for Delight：Importance
Unit 7 Getting Along Well with Others（和睦相处）
Section A：Text A：The Good Neighbor
Section B：Exercises
Section C：Text B：Choice
Section D：Grammar Focus：Writing Skill（Ⅱ）
Section E：Reading for Delight：Free Tickets
Unit 8 Memorable Experiences（难忘经历）
Section A：Text A：A Strange Bet with Two Strangers
Section B：Exercises
Section C：Text B：Fighting Sharks
Section D：Grammar Focus：Writing Skill（Ⅲ）
Section E：Reading for Delight：Kids’Talk
Unit 9 World Famous Scientists（著名科学家）
Section A：Text A：Edison’S Peculiar Dispositions
Section B：Exercises
Section C：Text B：Interesting Stories about Darwin
Section D：Grammar Focus：Writing Skill（Ⅳ）
Section E：Reading for Delight：Directions
Unit 10 Colorful Life（多彩生活）
Section A：Text A：The First Love during Snowfall
Section B：Exercises
Section C：Text B：A Fine Horse in Distress
Section D：Grammar Focus：Reading Skill
Section E：Reading for Delight：The Secret of Success
Test Paper 2
Glossary
