(课件网) Period 2 UNIT 3 ENVIRONMENTAL PROTECTION主题语境 人与自然———自然环境保护 1．What does the text mainly tell us A．Some polar bears died of starvation． B．What the greenhouse effect is． C．How the polar bears find food． D．Global warming has caused some disasters and we must pay attention to it． 课时练案 课文整体阅读(Reading and Thinking) √ 2．What's the main idea of the 4th paragraph A．The increasing extreme weather． B．The consequences of high greenhouse gas emissions． C．The warming trend will last for a long time． D．People will pay a high price． √ 1．From the second paragraph we can learn that_____． A．all the polar bears have died of starvation B．the expert knows nothing about the polar bear C．the polar bear couldn't find enough food because of climate change D．the polar bear liked travelling long distances √ 2．Why is the “natural” greenhouse effect important and necessary A．Because it is short-wave radiation． B．Because it is long-wave radiation． C．Because it releases more heat． D．Because it helps Earth to sustain life． 3．In which part of a newspaper or magazine may we find this text A．Entertainment． B．Economy． C．Education． D．Environment． √ √ 1．Do you think climate change is the result of human activity Give your reasons． _____ 2．Who do you think should take responsibility for dealing with climate change What can we do _____ [答案] 略 warmer and warmer death greenhouse effect disasters attention 1．release n．排放；释放；发布；发行；公开 vt．发布；释放；松开；免除；公开；宣泄 ①(教材原句)The heat is released back into space at longer wave lengths． _____ ②The new software is planned for release in April． _____ ③The band will release its new single next week． _____ ④Music is a great channel for releasing your emotions． _____ vt．释放 n．发行 vt．发布 vt．宣泄 2．fuel n．燃料；刺激性言行 vt．增加；给……提供燃料；加强；刺激 ①(教材原句)When people produce huge amounts of extra greenhouse gases by burning fossil fuels，more heat energy is trapped in the atmosphere and causes Earth's surface temperature to rise quickly． _____ ②Fuel the vehicle as you would at a filling station． _____ ③Research suggests warm colors fuel our appetites． _____ n．燃料 vt．给……提供燃料 vt．刺激 1．(学会断句)Experts claimed/that low sea-ice levels caused by climate change/meant the bear could not hunt seals as before, so it had to travel greater distances/in order to find food． [分析]本句是so连接的_____。Experts claimed是____；that引导宾语从句，作claimed的宾语；该宾语从句中的the bear could not hunt seals as before也是宾语从句，作meant的宾语；caused by climate change是过去分词短语作____，修饰名词levels。 [翻译]_____ _____ 并列复合句 主句 定语 专家称，由于气候变化造成的海冰水位较低，这意味着这只 熊无法像以前那样捕猎海豹，所以为了找到食物它不得不长途跋涉。 2．(学会断句)There is strong and comprehensive evidence/that the rise in temperature h ... ...
