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   > UNIT 1    > UNIT 2  
  Text A-1 Johnny the Explorer   Text A-1 Making Friends  
  Text A-2 Growing Pains   Text A-2 Black and White  
  Text B-1 Working While You Grow   Text B-1 Friends  
  Text B-2 E.T. -- A Fairy Tale of the Space Age   Text B-2 Friendship  
   > UNIT 3    > UNIT 4  
  Text A-1 Louis Pasteur: A Modern-Day Scientist   Text A-1 A Country of Immigrants  
  Text A-2 Can Computers Replace People?   Text A-2 Dolly Parton  
  Text B-1 The Scientific Method (1)   Text B-1 The Automobile in American Life  
  Text B-2 The Scientific Method (2)   Text B-2 I. M. Pei  
   > UNIT 5    > UNIT 6  
  Text A-1 Cycling for Air -- with Love   Text A-1 Alex, the Talking Parrot  
  Text A-2 The Woman of His Dreams   Text A-2 Do Animals Think?  
  Text B-1 Early Autumn   Text B-1 How Desert Animals Survive the Summer Heat and Dryness  
  Text B-2 Marriage and Romance   Text B-2 The Roadrunner  
   > UNIT 7    > UNIT 8  
  Text A-1 A Lucky Escape   Text A-1 Adult Education in the U.S.  
  Text A-2 The Death Car   Text A-2 Nobody Can Do It Like McDonald's  
  Text B-1 Jump   Text B-1 Correspondence Schools in the U.S.  
  Text B-2 Afraid to Fly   Text B-2 Biological Clocks