Unit 17 Text A The Railway Station Text B Back from the Holidays Unit 18 Text A Are Computer Games Dangerous? Text B The Future of Newspaper Unit 19 Text A Six Pence per Second Text B Money for Water Unit 20 Text A Environmental Pollution Text B Noise Pollution Unit 21 Text A Kick Your Bad Habits for Good Text B Wake up Your Life Unit 22 Text A Friendship Text B Black Umbrellas，Golden Hearts Unit 23 Text A Mars and Water Text B Sunspots Cause Trouble Unit 24 Text A How to Read Textbooks Text B Scientific Method Unit 25 Text A The Dawn of E-Life Text B Computers in Your Daily Life Unit 26 Text A Knowledge Economy Text B Globalization Unit 27 Text A The at-Risk Student May Be A Genius Text B Characteristics of Highly Creative Individuals Unit 28 Text A History of Etiquette Text B Let's Put Some Humanity Into E-mail Unit 29 Text A Genetic Engineering：The Hopes and Fears of the Future Text B Future Men：Living Longer Unit 30 Text A Air Pollution and Health Text B The Family And Mental Health Unit 31 Text A A Fable Text B Little Surfer Girl and the Hungry Shark Unit 32 Text A Olympic Games Text B The Joy of Running
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