CONTENTS Unit One Text: What Are Clones? Exercises Reading Passage:On the Cloning Frontier Unit Two Text: Origins of Clock Watching Exercises Reading Passage One: History of Iron on Postage Stamps Reading Passage Two: History of Papermaking in the United Kingdom Unit Three Text: Machine Translation Exercises Reading Passage: The Aims of MT Unit Four Text: Origin of Coal Exercises Reading Passage:Depletable, Nonrecyclable Energy Resources: Gas Unit Five Text: Sustainable Chemistry Exercises Reading Passage:The Role of Sustainable Chemistry in Sustainable? Development Unit Six Text: Resolving the Mystery of Galaxy Formation Exercises Reading Passage: Dark Matter Unit Seven Text: Food Irradiation Moves Forward Exercises Reading Passage:Irradiation: A Safe Measure for Safer Food Unit Eight Text: Synesthesia Exercises Reading Passage: Synesthesia: A Psychological Outlook Unit Nine Text: Telemedicine Exercises Reading Passage: Telesurgery Unit Ten Text: What Can Be Done about Junk Email Exercises Reading Passage:Advantages of Email 練習(xí)參考答案 課文參考譯文 Glossary