UNIT 1 1.Ants Are smarter Than We Think 2.Salt 3.The Greatest Magician,Harry Houdini UNIT 2 4.Wrong Number 5.Hitting the Books 6.Dox-A Great Police Dog UNIT 3 7.The Girl onhte Roof 8.Suntan and Society 9.Fire! UNIT 4 10.How Tea Came to Asia 11.Kon-Tiki 12.Unusual Notice UNIT 5 13.Archimedes and the Crown 14. The Case of Miss Fraser 15.Four Beautiful Things about Hawaii UNIT 6 16.Clumsy World for Lefty 17.The Disney World 18.My Grandfather's Watch UNIT 7 19.An Unknown Dance 20.A Time for Courage 21.The Revenge UNIT 8 22.The Linguistic Habits of New Generation 23.Desert Doctor 24.A New Car-Model T Ford UNIT 9 25.A Valuable Hour 26.A Letter 27.The Pelican UNIT 10 28."The Peanut Man" 29.clocks through Time 30.Leonardo da vinci UNIT 11 31.The Spy in the Sky 32.Pity for a Stranger 33.He made Us a Team UNIT 12 34.Treasure from Flavius 35.Unreality of TV 36.A Gift of Dreams KEY TO EXERCISES VOCABULARY