人教版(新教材)高中英语选修3Unit 3　Environmental Protection精品学案：Reading and Thinking-Comprehending(步步高)

1、Unit 3Environmental ProtectionUnit 3单元主题语境：人与自然We need to protect the earth because it is our home. 我们需要保护地球，因为它是我们的家，话题导入-Today rainforests are disappearing from the surface of the globe.Despite growing international concern, rainforests continue to be destroyed at a pace of over 80,000 acres per d

2、ay. World rainforest cover now stands at around 2.5 million square miles.Human activities have had an effect on much of this remaining area.Deforestation（滥伐森林）of rainforests has a global effect on the disappearance of species and the loss of renewable resources.Most people agree that the problem mus

3、t be solved, but the means are not as simple as building fences around the remaining rainforests or banning the wood trade.Economic, political, and social pressures will not allow rainforests to continue to exist if they are completely closed off from use and development.So, what should be done to p

4、rotect rainforests? The solution must be based on what is very practical and depend on developing an approach built on the principle of sustainable use and development of rainforests.Beyond the responsible development of rainforests, efforts to restore damaged forest lands along with protected areas

5、 are the key to securing rainforests for the long-term benefits they can provide for mankind.Historic approaches to rainforest protection have failed, as shown by the increased rate of deforestation.In many regions， closing off forests as untouchable parks and reserves has neither improved the quali

6、ty of living or economic opportunities for the rural poor, nor stopped forest clearing by illegal woodcutters and developers.The problem with this traditional approach to preserving wildland in developing countries is that it fails to develop proper economic motives for preserving the forest.Local p

7、eople and the government itself must see economic returns to prove the costs of maintaining（维持）parks from economic activities.靓句运用于写作As scheduled9 our team will take part in an important game.（2019全国 II,书面表达） The most important thing for me is that I can do something meaningful.（2019全国I ,书面表达）Readin

8、g and Thinking-Comprehending读前清障/识记单词快速顺畅阅读品句猜词请预读以下课文原句，并猜想句中加黑词汇的意思。A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate.融化的An expert who has studied polar bears for many years said that from the position of its dea

9、d body, the bear appeared to have starved and died.挨饿The heat is released back into space at longer wave lengths.释放； 排放Without this process, Earth could not sustain life.维持Climate scientists have warned that if we do not take appropriate actions, this warming trend will probably continue and there w

10、ill be a higher price to pay.趋势； 趋向In fact, news reports are frequently broadcast about extreme rainstorms and heatwaves causing deaths and economic losses.频繁地，经常 广播1 吾篇理精读演练萃取文本精华/Step 1 Fast-readingWhat does the passage mainly tell us?A. Some polar bears died of starvation.B What the greenhouse ef

11、fect is.How the polar bears find food.Global warming has caused some disasters and we must pay attention to it.K答案D2.Read the passage and match the main idea with each paragraph.Para. 1 A. We need to do something to reduce greenhouse gas emissions.Para.2B.The rise in temperature has caused natural d

12、isasters.Para.3C.Earth is getting warmer and warmer.Para.4D.A dead polar bear was found, which alarmedsome experts.Para.5E.Why is Earth getting warmer and warmer?K 答案 H Para. 1 C Para.2 D Para.3 E Para.4 B Para.5 AStep 2 CarefuLreadingRead the passage carefully and choose the best answer.From the se

13、cond paragraph we can learn that .all the polar bears have died of starvationB the expert knows nothing about the polar bearthe polar bear couldn t find enough food because of climate changethe polar bear liked travelling long distancesK答案X cAccording to the passage, help(s) Earth sustain life.A. th

14、e natural greenhouse effect B. the man-made greenhouse effect C. the carbon dioxide released into the atmosphere D. greenhouse gases produced by peopleK答案1 AWhich of the following statements is TRUE according to the passage?A. According to climate scientists, the warming trend will stop.B Extreme we

15、ather results from the rise in temperature.C. People should burn more fossil fuels.D. It is the government s responsibility to reduce greenhouse gas emissions.K答案U bWe can learn from the passage that .A. it doesn t matter whether we pay attention to global warming or not B heat from the sun keeps Ea

16、rth habitableC. the rise in temperature doesn t affect people s life D. the rise in temperature only affects some animalsK答案I BStep 3 Post-readingAfter reading the passage 9 please fill in the following blanks.There is little doubt that Earth is getting warmer and warmer.In 2013, many people l.were

17、shocked(shock) by a news photo of a dead polar bear which appeared to have starved and died. Experts claimed that low sea-ice levels 2.caused(cause) by climate change meant the bear could not hunt seals as before, so it had to travel greater distance 3.to find(find) food.Then what is causing the inc

18、rease in the global average surface temperature? Climate scientists often mention a key climate process called the ugreenhouse effect“ ， 4.which has two common meanings: the “natural“ greenhouse effect and the “man-made“ greenhouse effect.The “man-made” greenhouse effect has now become 5.a big probl

19、em.There is strong and comprehensive evidence 6.that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide.In fact, news reports are 7,frequently(frequent) broadcast about extreme rainstorms and heatwaves 8.causing(cause) deaths and economic losses.Continu

20、ed greenhouse gas emissions will result in further warming and long-lasting changes to the global climate.This requires the attention of people all over the world.We as individuals can reduce our “carbon footprintv by 9.restricting(restrict) the amount of carbon dioxide our lifestyles produce.lt is

21、our responsibility IQ.to seize(seize) every opportunity to educate everyone about global warming.Step 4 SentenceJearningExperts 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.K句式分析U 该

22、句为复合句。Experts claimed是主句;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是过去分词作后置定语,修饰low sea-ice levels； so连接的是并列句。K自主翻译X专家称，气候变化导致的海冰降低意味着北极熊不能像以前那样猎取海豹了, 所以它不得不走更远的距离去寻找食物。There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide, not only causing serious damage, but also costing human lives.K句式分析X 该句为复合句。There is strong and comprehensive evidence是主句;that引导 同位语从句;not only.but also不但