Unit 3 Environmental Protection Reading and Thinking 导学案-2025-2026学年高中英语人教版选择性必修第三册

该高中英语导学案聚焦选择性必修三Unit 3“全球变暖”主题，引导学生理解气候变化的成因、影响及解决措施。Pre-reading通过问题链激活已知，如极端天气类型、全球变暖后果等，结合文本类型与报纸板块推测，搭建从生活现象到语篇分析的学习支架。 该资料亮点在于分段落细化阅读任务，Para 1提取证据，Para 2借北极熊案例分析生态影响，Para 3对比自然与人为温室效应，培养信息整合与逻辑分析能力（思维品质）。答案详细对应各环节，助力学生自主核对反思，提升学习效率（学习能力），同时通过真实情境增强语言理解与表达（语言能力）。

选择性必修三 UNIT 3 reading and thinking 学案（附答案） Pre-reading : 1. What extreme weather and disasters do you know? 2. What consequences may global warming bring about ? 3. What’s the type of this text? A. News report. B. Biography. C. Expository essay. D. Argumentation. 4. In which part of a newspaper may we find this passage? A. Entertainment B. Economy C. Education D. Environment While -reading Para 1 What is the problem about climate change? Evidence 1: ____________________________________________________climate change Evidence 2: _____________________________________________________ Evidence 3:________________________________________________________ Para 2 1. What is the root cause? climate change → → → → 2. Why were many people shocked in 2013? A. A polar bear was lost in Norway. B. A news photo showed a dead, skinny polar bear. C. Many seals died on Svalbard island. D. Climate change suddenly became worse. 3. What did the polar bear’s body look like? A. Strong and healthy. B. Covered with thick fat. C. Only skin and bones. D. Full of wounds. 4. What caused the polar bear to die according to experts? A. It was hurt by other animals. B. It starved because of lack of food. C. It got a serious disease. D. It was killed by humans. 5. Why couldn’t the polar bear hunt as before? A. Seals had all left the area. B. The weather became too cold. C. Sea-ice levels became low due to climate change. D. It was too old to catch seals. 6. What does the case mainly show? A. Polar bears are good at travelling long distances. B. Temperature rise influences Earth’s ecology. C. Svalbard is not suitable for polar bears. D. Scientists care about wild animals Para. 3 1. What is the function of the “natural” greenhouse effect? Why has the “man-made” greenhouse effect become a big problem now? __________ greenhouse effect _________ greenhouse effect ↓ Function causing Earth’s surface temperature _________________ if too much heat energy is _______ keeping Earth’s climate _______ and __________ 2. Why is the “natural” greenhouse effect important and necessary? 3. What are the consequences of high greenhouse gas emissions? Para.4 1. What’s the consequences of global temperature rise? lead to example result result 2. Why did the author mention the climate scientists' warning? Para.5 1. What can be done to solve the global warming? solutions 2. What is the author's purpose of writing this text? Post -reading Match the main idea with each part. Part 1: (para.1-2 ) The consequences of the rise in temperature Part 2:(para. 3) The causes of the increase in the global average surface temperature Part 3: (para. 4) The solutions to reducing greenhouse gas emissions Part 4: (para. 5) The evidence of dramatic climate change that had an impact on Earth’s ecology UNIT 3 Reading and Thinking 课中作业完整参考答案 Pre-reading 1. What extreme weather and disasters do you know? Floods, droughts, heatwaves, wildfires, hurricanes, typhoons, sandstorms, melting glaciers, sea level rise. 2. What consequences may global warming bring about? It will cause rising sea levels, more frequent extreme weather, loss of animal habitats, species extinction, crop failure and destroyed ecosystems. 3. C. Expository essay. 说明文（文章客观介绍全球变暖的成因、危害与解决办法） 4. D. Environment 环境板块 While-reading Para 1 What is the problem about climate change? The global average surface temperature has risen sharply, bringing serious changes to the planet. Evidence 1: Global average surface temperature has increased by around 0.8℃ since 1880. Evidence 2: The last decade has been the warmest on record. Evidence 3: Extreme weather events are becoming more common and severe worldwide. Para 2 1. What is the root cause? Human activities → large amounts of greenhouse gas released → man-made greenhouse effect → global temperature rise → broken ecosystem & wildlife crisis 2. B 3. C 4. B 5. C 6. B Para. 3 1. Function of natural greenhouse effect: It traps heat from the sun to keep the Earth warm enough for all living things to survive. Man-made greenhouse effect problem: Human activities produce too much greenhouse gas, trapping too much heat and overheating the Earth. 2. It keeps the planet at a livable temperature. Without it, the Earth would be freezing cold and no life could exist. 3. Global temperature rises, sea ice melts, sea levels go up, ecosystems break down and wildlife loses homes. Para.4 1. Consequences of global temperature rise lead to melting polar sea ice example: Polar bears lose hunting grounds result: Polar bears starve and face extinction lead to rising sea levels example: Coastal cities and islands get flooded result: People lose homes and land disappears 2. To stress that global warming is a serious urgent threat and remind readers to take action before it’s too late. Para.5 1. Cut down greenhouse gas emissions: use clean renewable energy, reduce fossil fuel use, plant more trees, save energy in daily life, limit carbon release from factories and transport. 2. To inform readers about the causes and serious harm of global warming and call on people to take practical measures to protect the Earth. Post-reading 段落主旨匹配 Part 1 (para.1-2) — The evidence of dramatic climate change that had an impact on Earth’s ecology Part 2 (para. 3) — The causes of the increase in the global average surface temperature Part 3 (para. 4) — The consequences of the rise in temperature Part 4 (para. 5) — The solutions to reducing greenhouse gas emissions 学科网（北京）股份有限公司 $