導(dǎo)讀 Unit 1 Passage 1 The Key to Success Is Education Passage 2 Online Libraries：Great News for Adult Students Passage 3 English Classes Saving Passage 4 Be the Most Popular College Freshman Unit 2 Passage 1 The Benefits of Living on Campus Passage 2 Studying Overseas Guide Passage 3 Western European Wedding Traditions Passage 4 United States Tipping Etiquette Unit 3 Passage 1 Easterin the U.K Passage 2 The Tragic Event Passage 3 Gold！Thousands Went to Western Canada to Find it Passage 4 Recession Brings New Attention to Domestic Violence Unit 4 Passage 1 Life in Somalia's Pirate Town Passage 2 Drug Abuse in the United States Passage 3 From Sydney to San Francisco： Lights Dim in Earth Hour Passage 4 The Mystery of College Costs Unit 5 Passage 1 Hello，Girls Passage 2 Why Not Just Print More Money？ Passage 3 Getting Thin-for Good Passage 4 Bringing Fish Back up to Size Unit 6 Passage 1 Farms Begin to Grow in Cities Passage 2 A Baker's Dozen Passage 3 The Secret Language of Dolphins. Passage 4 Alternative Fuel-Is Green the New Black？ Unit 7 Passage 1 Renewable Energy Is Popular，But Coal Is Still King Passage 2 Barack Obama Passage 3 David Beckham Passage 4 Bill Gates Unit 8 Passage 1 How to Benefit From Walking Passage 2 Laid off Workers：Less Stressed Than Those Still Employed？ Passage 3 The Charm of Perfume Passage 4 Why Are So Many People Getting Divorced？ Key to Exercises
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