Unit1 1
Text A Using Paper Beads to Improve Ugandan Lives 1
Text B For Some Teens,a Busy Life Takes Fun Out of High School 3
Text C Not All Going on a Summer Holiday 6
Text D Lecture or Interactive Teaching? 10
Unit2 12
Text A Back to the Future（Ⅰ） 12
Text B Back to the Future（Ⅱ） 15
Text C John Dewey:Educator and"America's Philosopher" 18
Text D Roosevelt's Death Makes Truman President 20
Unit3 24
Text A Chinese Clinics Push"Multiple Baby Pills" 24
Text B Jet Lag Slows Hamster Brains 27
Text C Autoimmune Diseases When the Body Starts Attacking Itself（Ⅰ） 31
Text D Autoimmune Diseases When the Body Starts Attacking Itself（Ⅱ） 34
Unit4 37
Text A National Debts Can Threaten Economic Growth 37
Text B The iPad Trumps Oil:Apple Is Most Valuable U.S.Company 40
Text C Adobe and Apple Reach a Flash Point 44
Text D Manufacturers in Wenzhou Adapt to the Changing Times 47
Unit5 50
Text A Breaking the Habit 50
Text B Want to Live Longer?Turn Off Your TV 53
Text C The New American Food Culture 56
Text D U.S.Companies Help Families Adjust to Life Overseas 60
Unit6 64
Text A Confucius Institute Helps Governor's School Students Experience Chinese Culture 64
Text B The Perfect Poise of Tan Yuanyuan 67
Text C Tips on Table Manners 70
Text D Crime and Punishment 73
Unit7 76
Text A After Second World War,a Baby Boom 76
Text B On the Death of Martin Luther King 79
Text C Aristotle on Friendship 83
Text D The Pleasure of Books 86
Unit8 89
Text A New Year's Day 89
Text B England Riots:Cameron Says Police Admit to Wrong Tactics 93
Text C If Flour+Sugar+Children=Mess,Why Let Them Bake? 97
Text D Popular Ways to Get in Shape 101
Key 106