Unit One
  Section A Body Systems
  Section B The Difference a Teacher Can Make
 Unit Two
  Section A Disease and Its Causes
  Section B American Hospitality
 Unit Three
  Section A Disease-Causing Organisms
  Section B The Nutrients in Food
 Unit Four
  Section A What the Skin Does and Tells
  Section B Seven Ways to Keep Fit and Trim
 Unit Five
  Section A The Structures and Functions of Bones and Joints
  Section B The Benefits of Keeping Active
 Unit Six
  Section A Blood
  Section B Table Manners That Matter
 Unit Seven
  Section A Structure of the Heart
  Section B U.S.Independence Day
 Unit Eight
  Section A Pulse and Blood Pressure
  Section B The Story of Alfred Nobel
 Unit Nine
  Section A Liver
  Section B American Culture: Culture Shock
 Unit Ten
  Section A The Stomach and Its Disorders
  Section B Become Healthier with Green Tea
 Unit Eleven
  Section A Lungs
  Section B 12 Important Tips to Prevent Cold and Flu Infection
 Unit Twelve
  Section A Ventilation
  Section B Nursing Education in U.K.（Part Ⅰ）
 Unit Thirteen
  Section A Kidneys and Body Chemistry
  Section B Nursing Education in U.K.（Part Ⅱ）
 Unit Fourteen
  Section A Thyroid Gland and Thyroxin
  Section B Introduction to the American Health Care System （Part Ⅰ）
 Unit Fifteen
  Section A Benign and Malignant Tumors
  Section B Introduction to the American Health Care System （Part Ⅱ）
 参考译文与答案