Unit 1 Text A-1 Why I Love the City Text A-2 People on the Move Text B-1 Caution： Bumpy Road Ahead Text B-2 Memory Lane lsn't What lt Used to Be Unit 2 TextA-1 Frederick Douglass TextA-2 Best of Friends，Worlds Apart TextB-1 Coming to an Awareness of Language TextB-2 She Wanted to Teach Unit 3 Text A-1 Brave New World of Biometrics Text Ao2 Fingerprints Instead of Credit Cards Text B-1 Black Box Tells Its Secrets Text B-2 The Deli Unit 4 TextA-1 Everything Equals E=mc2 TextA-2 Black Holes TextB-1 The Cosmos TextB-2 Stars Unit 5 Text A-1 The Cost-Benefit Principle Text A-2 The Economics of Product Design Text B-1 Lawyers and Professors and Cars and Clothing Text B-2 Why Do 'Almost New" Used Cars Sell for So Much Less Than Brand-new Ones? Unit 6 TextA-1 The First Read TextA-2 The Gift TextB-1 Peanuts Creator Schulz Dies on Eve of Last Strip TextB-2 Linda's New Friend Unit 7 Text A-1 Starting Your Own Business Text A-2 A Team Leader Text B-1 Working for Fun and Profit Text B-2 The Carpet Fitter Unit 8 TextA-1 Atree Project Helps the Genes of Champions Live On TextA-2 Cloning TextB-1 Engineers Ask Nature for Design Advice TextB-2 Flowers in the Desert? Appendix Key to Comprehension Exercises
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