Unit 1
Section Ⅰ Main Ideas and Important Details
Passage 1 Zimbabwe Children Are \"Wasting Away\"
Passage 2 Fashions
Passage 3 When Did Americans Begin Sending Greeting Cards?
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 Manners and Customs in Different Cultures
Passage 2 Laziness
Passage 3 Direct and Indirect Taxation
Section Ⅲ Optional Listening Exercises
Passage 1 Jump
Passage 2 White and Black
Passage 3 The Origin of the Song——\"Happy Birthday to You\"

Unit 2
Section Ⅰ Main Ideas and Important Details
Passage 1 The Effects of the Internet
Passage 2 Windows XP
Passage 3 Internet Blogs
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 Finding Friends on the Internet
Passage 2 Emotion-Sensitive Computer
Passage 3 Roborior： A Robot House-Sitter
Section Ⅲ Optional Listening Exercises
Passage 1 Low-Cost Computer Under Research
Passage 2 The Process of Information Transferring
Passage 3 Good Aspects of the Disaster

Unit 3
Section Ⅰ Main Ideas and Important Details
Passage 1 Why Do Sharks Bite Human Being?
Passage 2 A Spiders Story
Passage 3 The Fish in Great Danger
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 The Complex Social Structure of Ant Societies
Passage 2 Snakes Are Not as Fearful as You May Have Thought
Passage 3 Secrets of the Spider Web
Section Ⅲ Optional Listening Exercises
Passage 1 The Study on Birds Sleep
Passage 2 The Biggest Disney World
Passage 3 Crime as a Worldwide Problem

Unit 4
Section Ⅰ Main Ideas and Important Details
Passage 1 The Legal Marriage Age for Young Americans
Passage 2 The Nuclear and Extended Family
Passage 3 Obama Talks About Fatherhood
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 Saving for a Baby
Passage 2 Problems with Parent-Child Relationships
Passage 3 The History of the Custom of Eating with a Fork
Section Ⅲ Optional Listening Exercises
Passage 1 Why Do Americans Love Uniforms?
Passage 2 Pizza： a World Popular Food
Passage 3 The Trends of Interdependent Future

Unit 5
Section Ⅰ Main Ideas and Important Details
Passage 1 The Differences Between Teaching and Learning
Passage 2 Being a Writer Is Not Easy
Passage 3 A Biography of Alexander Fleming
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 The Magic Memory Glasses
Passage 2 Doubts About Speed Reading
Passage 3 Education in China
Section Ⅲ Optional Listening Exercises
Passage 1 A Love Story in Greek Mythology
Passage 2 A Scientific Research on the Power of Positive Thinking
Passage 3 Unofficial Strikes in Britain Unit

Unit 6
Section Ⅰ Main Ideas and Important Details
Passage 1 Are Small Aircraft a Good Alternative?
Passage 2 Tour in London
Passage 3 Electromagnetic Interference： a Cause of Aircraft Crashes
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 The Victoria Line： a Special Railway
Passage 2 Why Do People Enjoy Traveling?
Passage 3 What Will the 2020 Car Look Like?
Section Ⅲ Optional Listening Exercises
Passage 1 The Wright Brothers and Flying Machines
Passage 2 Cars Continued Popularity
Passage 3 Who Doesnt Need to Wear a Seat Belt?

Unit 7
Section Ⅰ Main Ideas and Important Details
Passage 1 Special Methods to Reduce Population in Brazil
Passage 2 Its Time to Protect the Earth
Passage 3 Beautiful Cities out of Garbage
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 The Jujube Plant That Will Save Whales
Passage 2 The Weather Prediction for Asia in 2050
Passage 3 Lack of Water and Solutions to It
Section Ⅲ Optional Listening Exercises
Passage 1 Water Erosion
Passage 2 The Way to Reducing Car Pollution
Passage 3 Agriculture in the U.S.A.

Unit 8
SectionⅠMain Ideas and Important Details
Passage 1 A Guide to Health for Tourists
Passage 2 Avian Influenza
Passage 3 Cola： a Cure for Headache
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 Health Is Most Precious
Passage 2 Keeping Pets to Reduce the Risk of Heart Disease
Passage 3 Concerns over Lack of Sleep in the U.S.A.
Section Ⅲ Optional Listening Exercises
Passage I The Importance of Rest in Athletic Training
Passage 2 The Importance of Medical Insurance
Passage 3 Negative Attitudes Toward Euthanasia

Unit 9
Section Ⅰ Main Ideas and Important Details
Passage 1 Visual Communication
Passage 2 Forms of Pub-Talk
Passage 3 The Way People Communicate
Section Ⅱ Listening-Based Integrated Exercises
Passage 1 The Advantage of Emails
Passage 2 IPod Media Players and MP3 Players
……
Unit 10
Key to Exercises and Transcripts