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Unit 4 Global warming 第一學(xué)時(shí) Reading and Comprehension,?Task 1,快速閱讀課文“The Earth is Becoming Warmer —But does it Matter？”用大約30詞寫(xiě)出課文的概要。 溫馨提示：本文屬于說(shuō)明文，以說(shuō)明為主要表達(dá)方式來(lái)解說(shuō)事物，闡明事理，啟迪思維。寫(xiě)概要時(shí)要緊扣說(shuō)明的對(duì)象，并根據(jù)文章的總分結(jié)構(gòu)，圍繞不同的觀點(diǎn)來(lái)闡述地球變暖的原因以及預(yù)測(cè)利弊的要點(diǎn)。 ________________________________________________________________________,答案： In the passage，Sophie Armstrong explores the questions on how human activity creates “greenhouse gases”which directly leads to the global warming，and shows us the different attitudes among scientists towards global warming.,?Task 2,仔細(xì)閱讀“The Earth is Becoming Warmer —But does it Matter？”選擇正確答案。 1．From the passage we can infer that the author probably agrees that________. A．global warming is good for humans indeed B．people should do nothing about the global warming,D,C．catastrophes will happen if the globe keeps on warming D．a(chǎn) lot remains to be found out about the effects of global warming 2．All the followings are true EXCEPT________ . A．everyone believes that global warming is caused by human activities B．carbon dioxide is a byproduct of burning fossil fuels,A,C．people accept Charles Keelings data because he took accurate measurements D．not all the scientists agree with each other on the effect of the global warming 3．The main difference between Dr.Janice Fosters theory and George Hambleys lies in________. A．how to prevent global warming B．what causes global warming,D,C．whether global warming would cause serious problems or not D．whether the levels of carbon dioxide have increase or not over the years 4．“But there are some very different attitudes among scientists towards this issue.” “issue” here means the same as the one in “________”． A．I bought the new stamp the day of its issue,B,B．This is a big issue；we need more time to think about it C．She is always on a diet—she has issues about food D．The magazine has 12 issues each year 5．What may happen if we do nothing about global warming? A．There may be a rise of the sea level.,A,B．The temperature will surely be lower. C．The “greenhouse effect” will disappear. D．It has nothing to do with us.,?Task 3,再次閱讀“The Earth is Becoming Warmer—But does it Matter？”然后完成下面的表格。,fossil fuels,produce energy,carbon dioxide,add,up,sea level,floods,droughts,quicker,more,?Task 4,根據(jù)課文“The Earth is Becoming Warmer—But does it Matter？”完成下列短文。 There is no doubt 1.________ the earth is becoming warmer but there is a fierce debate over whether it is human activity that has caused this global warming or whether it is just a natural phenomenon. Many scientists like Dr.Janice Foster believe that people have caused the increase in the earths temperature,that,2.________ the burning of fossil fuels like coal，natural gas and oil to produce energy 3.________ byproducts are called “greenhouse” gases，the most important one 4.________ carbon dioxide.These gases trap heat from the sun and therefore warm the earth，without which the earth 5.________ (be) about thirtythree degrees Celsius cooler than it is.But increased amount of carbon dioxide means that 6.________ heat energy is trapped in the atmosphere 7.________ (cause) the global temperature to go 8.________.,through,whose,being,would be,more,causing,up,On 9.________ other hand，scientists like George Hambley believe that any warming will be mild with 10.________ bad environmental consequences and more carbon dioxide is actually a positive thing.,the,few,