| Unit 1 Food and Diet Part Ⅰ Reading Comprehension （Skimming and Scanning） Food： Past and Present Part Ⅲ Reading Comprehension （Reading in Depth） Passage 1 A New Diet Equation Passage 2 Diet, Nutrition and Healthy Living Passage 3 Cancer and Diet Unit 2 Archaeology Part Ⅰ Reading Comprehension （Skimming and Scanning） Excavating an Ancient Egyptian Tomb Part Ⅱ Reading Comprehension （Reading in Depth） Passage 1 Troy Uncovered Passage 2 Pompeii： Buried in Ages Passage 3 Machu Picchu Archaeological Sites Unit 3 Medicine Part Ⅰ Reading Comprehension （Skimming and Scanning） A Brief History of Medicine Part Ⅱ Reading Comprehension （Reading in Depth} Passage 1 The Controversy over Human Cloning Passage 2 Natural Medicine —— The Way Home Passage 3 How to Build a Body Part Unit 4 Space Part Ⅰ Reading Comprehension （Skimming an... |
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