访美教师帮你阅读英语--初中（6）

目录 1 Why Do Astronauts Wear Space Suits? 2 Jupiter 3 The Sahara Desert 4 The lceberg 5 Fast as Lightning 6 What Does Man Do with His Big Brain? 7 Mount Everest 8 The Driest Desert 9 Air Clock 10 The Biggest Continent 11 The Moon (one) 12 The Moon (two) 13 Solids, Liquids and Gases 14 Light 15 Compass 16 Electricity 17 Magnet 18 Radar 19 Temperature 20 Buoyancy 21 Current, Voltage and Resistance 22 Energy and Conservation of Energy 23 Conductors insulators and Semicon-ductors 24 Sound 25 Petroleum 26 Chaiging by induction 27 Static Electricity 28 Sonar 29 Why Go into Space? 30 Meters 31 Computer 32 Heat Transfer 33 Engine Control 34 Addition Water for Man's Needs 35 Generator 36 Solar Battery 37 Fresh Water 38 Airplanes 39 Movement of the Earth 40 Can It Really Happen? 41 We Need Light to See 42 Balancing 43 Nuclear Energy 44 Why Does an Airplane Fly? 45 What Makes an Airplane Go up and down? 46 The Air Pioneers (one) 47 The Air Pioneers (two) 48 Dreams of Flight (one) 49 Dreams of Flight (two) 50 Fire Making 51 What Is the Sky? 52 Rockets in the Sky 53 Trains 54 Buoy 55 Physical and Chemical Changes 56 Volcanoes 57 Work and Energy 58 Satellites 59 Uses of Satellites 60 Plants 61 Comparison of Eye and Camera 62 The Marvels of Colour 63 Deserts 64 Our Planet-Earth 65 Gravitadon 66 Eclipses 67 Vitamins 68 Rie Birth of a Volcano 69 Terrible Earthquakes 70 Earthquake Forecasting Speaks Debate 71 Robot (one) 72 Robot (two) 73 Robot (three) 74 From the Lab to the Library (one) 75 From the Lab to the Library (two) 76 Brief Highlights in the Histoiy of Electric Power 77 The Discoverer of X-rays 78 Early Days of the Mail 79 He Led a Useful Life