Contents Unit 1 Visitas Memories __ 2 Part I Part IⅢ Preparing for College: Insights from My Freshman Year _6 Part IⅢⅢ Become and Stay Competitive with Higher Education _ 11 The Pros and Cons of Free College Education _ 13 Part IⅣ The Benefits of Higher Education _ 17 Part V Unit 2 Friendship __24 Part I Crimson Ties _27 Part Ⅱ Why Friends Make Us Happier,Healthier People? __32 Part IⅢⅢ Personality Similarity and Friendship Choices __ 34 Part Ⅳ What Americans Really Think of International Students? __39 Part V Unit 3 The Link Between Pure and Applied Science __46 Part I What Would Happen If All Satellites Stopped Working? __50 Part IⅡ Description in Scientific Research _ 56 Part IⅢⅢ The Pros and Cons Associated with Self-Driving Cars __58 Part IⅣ Chien-Shiung Wu _63 Part V Unit 4 I.M.Pei __70 Part I Andrew Carnegie _ 73 Part IⅡ The American Dream: Reality or Just a Dream? __77 Part IⅢⅢ Should the United States Keep Daylight Saving Time? __79 Part IⅣ America Is More Patchwork Quilt than Melting Pot _ 84 Part V Unit 5 The Woman of His Dreams _90 Part I What I Learned in the Shoe Store __93 Part IⅡ Part II Friendship, Trust, and the Bottom Line __99 Part IⅣ Sales as a Career Choice: Advantages and Disadvantages _ 101 Success Will Come and Go, but Integrity Is Forever __ 106 Part V Unit 6 Txt Msg Phenomenon: R U in2 It? ___ 112 Part I How Social Media Is Affecting the Way We Speak and Write _ 116 Part Ⅱ Social Media __ 120 Part ⅢⅢ The Pros and Cons of Social Networking __ 122 Part IⅣ The Effects of Social Media on How We Communicate _ 127 Part V Appendix Key to Comprehension Exercises _ 132 VI
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