Unit 1 Text - 1 How the Automobile Shaped America： The 'Burbs

Text - 2 America's Love Affair with the Car Is Fading

Text - 3 Henry Ford， the Man Who Changed America

Text - 4 Memory Lane Isn't What It Used to Be

Unit 2 Text - 1 The Teenager．Who Saved a Man with an SS Tattoo

Text - 2 Two 7-Year-Old Boys， Two Dramatically Different News Stories

Text - 3 That Black Southern Man and That White Northern Girl?

Text - 4 She Wanted to Teach

Unit 3 Text - 1 The History and Development of Suburbs

Text - 2 The End of the Suburbs

Text - 3 Cities： How Crowded Life Is Changing Us

Text - 4 Black Box Tells Its Secrets

Unit 4 Text - 1 Carl Sagan and the Cosmos Legacy

Text - 2 The Hubble Telescope

Text - 3 Everything Equals E = mc2

Text - 4 Black Holes

Unit 5 Text - 1 The Modern Workplace： Flat， Flexible， and Wired Up

Text - 2 Older Workers Transform the Modern Workplace

Text - 3 Two Kinds of Buyers

Text - 4 The Economics of Product Design

Unit 6 Text - 1 The Meaning of Friendship in a Social Networked World

Text - 2 How Does Social Media Affect Our Relationships?

Interpersonal Communication in the Digital Age

Text- 3 The Gift

Text - 4 Linda's New Friend

Unit 7 Text- 1 New Grads Drawn to New Businesses

Text - 2 How Paperbacks Transformed the Way Americans Read

Text - 3 A Decidedly Mixed Bag

Text - 4 The Carpet Fitter

Unit 8 Text - 1 Are Dolphins Also Persons?

Text - 2 Well， Who's a Clever Species， Then?

Text - 3 Do You Know Why We See Snow as White?

Text - 4 Flowers in the Desert?

Appendix Key to Comprehension Exercises