Unit One Famous People
  Passage 1 “Mother” of Harry Potter
  Passage 2 The World’s First Woman Doctor
 Unit Two Customs
  Passage 1 British Customs
  Passage 2 The Story of St. Nicholas (The Original Santa Claus)
 Unit Three Your Body Inside
  Passage 1 How Do You Look Inside?（Ⅰ）
  Passage 2 How Do You Look Inside?（Ⅱ）
 Unit Four Health and Exercise
  Passage 1 Everyday Activities Are Good for Your Health
  Passage 2 Walking for Exercise; Improve Your Health
 Unit Five Natural World
  Passage 1 Animal Camouflage
  Passage 2 Why Leaves Are Green
 Unit Six Job Hunting and Getting a Job
  Passage 1 Job Interview
  Passage 2 The Best Way to Success Is Hard Work
 Unit Seven Holidays and Festivals
  Passage 1 Some Holidays in the U.S.
  Passage 2 Saint Valentine’s Day
 Unit Eight Cities and Countries
  Passage 1 Canada
  Passage 2 Statue of Liberty
 Unit Nine Youth Activities
  Passage 1 4-H
  Passage 2 Individual Projects of the 4-H Members
 Unit Ten Social Relations
  Passage 1 Making Friends
  Passage 2 Chuck’s Friend
 Unit Eleven Education and Entertainment
  Passage 1 Australia：Homeschooled Children
  Passage 2 “9·11”Looks Just Like a Movie
 Unit Twelve Doctors and Diseases
  Passage 1 U.S. Looks Abroad for Nurses
  Passage 2 Risky Business
 Unit Thirteen Climate and Weather
  Passage 1 Climate Is Changing
  Passage 2 You Can Make a Difference
 Unit Fourteen Environment and Protection
  Passage 1 Controlling the Weather
  Passage 2 Water
 Unit Fifteen Science and Development
  Passage 1 The Happy Space Shuttle
  Passage 2 Hearing Magic
 Appendix Ⅰ Key to Exercises
 Appendix Ⅱ Glossary