Contents
UnitOne Language Learning
UnitTwoTales of Life
UnitThreeAnimals
UnitFourScience and Technology
UnitFiveSpace and Aviation Science
UnitSixPopulation and Aging
UnitSevenEnvironmental Protection
UnitEightFood and Health
UnitNineEconomy
UnitTenAmerican Culture
UnitElevenThe Educational System in the West
UnitTwelveWoman Issues
UnitThirteenSports
UnitFourteenTelevision and the Internet
UnitFifteenLessons for Life
Key to the Exercises