Unit One

Part I What Is Intelligence, Anyway？
Part ll Personal Benefits of Foreign Language Study
Part Ill America's Foreign Language Crisis
Part IV Learning a Second Language:Weighing the Pros and Cons
Part V An Additional Benefit of Learning a New Language

Unit Two

Part I A Game of Light and Shade
Part Il When Summer Found Its Place in My Heart
Part Ill The Importance of Healthy Family Relationships
Part IV Pros and Cons of the Nuclear Family
Part V A Most Important Family Bond

Unit Three

Part I Rites of Passage
Part II Text Generation Gap:U R2 Old
Part Ill The Digital Generation Gap
Part IV How Can Age Diversity Affect Your Company？ Here Are the Pros and Cons
Part V Is Technology Creating a Family Divide？

Unit Four

Part I The Fun and Excitement of "Reality"
Part II Once Upon a Time There Were No Cell Phones
Part Ill The Importance of Information Technology in Education
Part IV Virtual Reality in the Classroom:Advantages and Disadvantages
Part V Three Ways VR Will Impact the Future of Tech Careers

Unit Five

Part I Do Animals Think？
Part Il Natural and Applied Science
Part Ill How Smart Are Animals？
Part IV Advantages and Disadvantages of Industrial Robots
Part V Dolphins-The Smartest Animals on Earth

Unit Six

Part I Reading -The Most Important Way to Learn English
Part lI Does Twitter Have It Out for the English Language？
Part Ill Learn English Online:How the Internet Is Changing Language
Part IV The Pros and Cons of Google Translate
Part V Two Ways the Internet Has Changed the English Language

Appendix Key to Comprehension Exercises