Unit 1 1
Part A New Estimates of Oil and Gas Resources in Alaska 1
Part B “Black Holes”Aren’t Holes at All 7
Unit 2 14
Part A Poplar Trees Help Clean up the Environment 14
Part B Trees Could Affect Land Use,Reduce Skin Cancer 19
Unit 3 25
Part A The Impacts of Composting 25
Part B Converting Wet Bio-waste into Energy:Alternative to Land Application? 30
Unit 4 37
Part A ACID RAIN:What s the Solution 37
Part B Tropical Rivers Exhale Millions of Tons More CO2 than Thought 44
Unit 5 50
Part A Bioremediation-using the Trophic Diversity of Bacteria to Solve Environmental Problems 50
Part B Cancer and the Environment 58
Unit 6 65
Part A Obsolete Pesticides Threaten Environment 65
Part B Golf is an Environmental Hazard 71
Unit 7 78
Part A Garbage-Potential Resources 78
Part B Imagine No Restrictions on Fossil-fuel Usage and No Global Warming! 86
Unit 8 91
Part A Abundant Resources for Making Foods 91
Part B Pollution-related Diseases Kill Millions of Children a Year 98
Unit 9 104
Part A What s Wrong with Our Weather 104
Part B New Research Could Spearhead Permanent Nuclear Waste Storage 113
Unit 10 120
Part A The Oceans——Man s Last Great Resource 120
Part B Everybody s Problem—— Hazard Waste 126
Unit 11 133
Part A New Technology of Air Pollution Control 133
Part B Garbage in,Garbage out 139
Unit 12 145
Part A Water Problems 145
Part B Diesel Particles in Air Slow Kids Lung Development 151
Unit 13 157
Part A Basic Factors in Water Analysis 157
Part B Thunderstorms Are Affected by Pollution 163
Unit 14 168
Part A Solid Waste Disposal 168
Part B The Time Is Now 174
Unit 15 180
Part A Biological Treatment System 180
Part B The Invisible World of Industrial Gas 187
Unit 16 191
Part A Health Effects of Noise 191
Part B War Affects the Environment 196
Unit 17 203
Part A Water Purification 203
Part B Summary of EIA 210
Unit 18 216
Part A Water Treatment Processes 216
Part B Thermal Pollution 223
Afterclass Readings 228
I Microbial Ecology 228
Ⅱ Fungus 233
Ⅲ Is All Environment about Wildlife? 242
Ⅳ Biological Control:Bacillus Popilliae 246
参考译文 255
Keys to Exercises 300
词汇表 314