前辅文
  Introduction to Important Reading Strategies and Skills
 UNIT 1 American Life
  Text A Choosing the Way We Live
  Text B Brief History: The American Family
 UNIT 2 Government
  Text A Government in Britain
  Text B Government in the U.S.
 UNIT 3 Job
  Text A Unemployed U.S. Professionals Grapple with New Job-hunting Techniques
  Text B My First Job — The Parking-lot Sweeper
 UNIT 4 Discovery
  Text A How Artificial Intelligence Will Change Medicine
  Text B Improving Your Memory
 UNIT 5 Education
  Text A American Style of Education
  Text B Which Is Better: School Online or a Standard Education?
 UNIT 6 Morality
  Text A Morality Without Free Will
  Text B Moral Issues
 UNIT 7 Friendship
  Text A How Friends Can Help You
  Text B Friendship in the Age of Social Media
 UNIT 8 Social Changes
  Text A Major Consequences of Modernization
  Text B Cultural Change
 UNIT 9 Mental Health
  Text A Overcoming Loneliness
  Text B “Shopping Addiction” Can Cause Harm, and It’s Moved Online
 UNIT 10 Physical Health
  Text A While You Were Sleeping
  Text B Walking
 UNIT 11 American Culture
  Text A Culture and Cuisine
  Text B How Martin Luther King Jr’s Birthday Became a Federal Holiday
 UNIT 12 Water
  Text A Household Water
  Text B Water Wars
 UNIT 13 Sports
  Text A Breaking Barriers Through Sports
  Text B How Much Exercise Do I Need?
 UNIT 14 Economy
  Text A Wage Against the Machine
  Text B The Place of Business and Work in U.S. Society
 UNIT 15 Women Problems
  Text A Iceland Leads the Way to Women’s Equality in the Workplace
  Text B Women in the Workforce — The First to Go as Economies Shrink
 UNIT 16 Environment
  Text A Natural Gas Use Is Rising: Is That Good News or Bad News for the Climate?
  Text B The Worst Climate Scenarios May No Longer Be the Most Likely
 Answer Keys