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1、 河北省武邑中學(xué)2016屆高考英語一輪復(fù)習(xí) Unit4 Global warming導(dǎo)學(xué)案 新人教版選修6 Reading THE EARTH IS BECOMING WARMER — BUT DOES IT MATTER? During the 20th century the temperature of the earth rose about one degree Fahrenheit. That probably does not seem much to you or me, but it is a rapid increase when ___1_____(compare

2、) to other natural changes. So how has this come about and does it matter? Earth Care’s Sophie Armstrong explores these questions. There is no doubt that the earth is becoming warmer (see Graph 1) and that it is human activity that has caused this global warming rather than a random but natural phe

3、nomenon. All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. Dr Jan

4、ice Foster explains: “There is a natural phenomenon that scientists call the ‘greenhouse effect’. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the ‘greenhouse effect’, the earth ____

5、_2________(be) about thirty-three degrees Celsius cooler than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.” We

6、 know that the levels of carbon dioxide _____3_____(increase) greatly over the last 100 to 150 years. It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997. He found that between these years the carbon dioxide in

7、 the atmosphere went up from around 315 parts to around 370 parts per million (see Graph 2). All scientists accept this data. They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. So how high will the temperature increase go? Dr J

8、anice Foster says that over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius, but it could be as high as 5 degrees. However, the attitudes of scientists towards this rise are completely different. On the one hand, Dr Foster thinks that the trend which increases t

9、he temperature by 5 degrees would be a catastrophe. She says, “We can’t predict the climate well enough to know what to expect, but it could be very serious.” Others who agree ____4____ her think there may be a rise of several metres in the sea level, or predict severe storms, floods, droughts, fami

10、nes, the spread of diseases and the disappearance of species. On the other hand, there are those, like George Hambley, who are opposed to this view and believe that we should not worry about high levels of carbon dioxide in the air. They predict that any warming will be mild with few bad environment

11、al consequences. In fact, Hambley states, “More carbon dioxide is actually a positive thing. It will make plants grow quicker; crops will produce more; it will encourage a greater range of animals — all of which will make life for human beings better.” Greenhouse gases continue to build up in the a

12、tmosphere. Even if we start reducing the amount of carbon dioxide and other greenhouse gases, the climate is going to keep on warming for decades or centuries. No one knows the effects of global warming. Does that mean we should do nothing? Or, are the risks too great? Using Language WHAT CAN

13、WE DO ABOUT GLOBAL WARMING? Dear Earth Care, I am doing a project on behalf of my school about global warming. Sometimes t feel that individuals can have little effect on such huge environmental problems. However, I still think people should advocate improvements in the way we use energy today. As

14、 I’m not sure where to start with my project, I would appreciate any suggestions you may have. Thank you! Ouyang Guang Dear Ouyang Guang, There are many people who have a commitment like yours, but they do not believe they have the power to do anything to improve our environment. That is not t

15、rue. Together, individuals can make a difference. We do not have to put up with pollution. The growth of the greenhouse gas, carbon dioxide in the air actually comes as a result of many things we do every day. Here are a few suggestions on how to reduce it. They should get you started with your pro

16、ject. 1.We use a lot of energy in our houses. It is OK to leave an electrical appliance on so long as you are using it — if not, turn it off! Do not be casual about this. So if you are not using the lights, the TV, the computer, and so on, turn them off. If you are cold, put on more clothes instead

17、 of turning up the heat. 2.Motor vehicles use a lot of energy — so walk or ride a bike if you can. 3.Recycle cans, bottles, plastic bags and newspapers if circumstances allow you to. It takes a lot of energy to make things from new materials, so, if you can, buy things _____5_____(make) from recyc

18、led materials. 4.Get your parents ____6______(buy) things that are economical with energy — this includes cars as well as smaller things like fridges and microwaves. 5.Plant trees in your garden or your school yard, as they absorb carbon dioxide from the air and refresh your spirit when you look a

19、t them. 6.Finally and most______7_______(important), be an educator. Talk with your family and friends about global warming and tell them what you have learned. Remember — your contribution counts! Earth Care 自學(xué)加油站 1.circumstance ?n [通常作復(fù)數(shù)] 環(huán)境; 情形; 情況: Recycle cans, bottles, plast

20、ic bags and newspapers if circumstances allow you to. in/under the circumstances 在這種情況下; 情形既然如此: Under the circumstances he felt unable to accept the job. under no circumstances 在任何情況下決不; 無論如何不: = in no case Under no circumstances should we lend money to him. 2. keep on (doing sth): continue

21、(doing sth) 繼續(xù)（做某事物） The rain kept on all night. Prices keep on increasing this year. 短語拓寬：keep away from________ keep back________； keep in mind_______；keep up___________； keep up with____________； keep in touch with sb___________ 3. on the whole considering everything 總的說來; 一切都考慮在內(nèi): On

22、the whole, I thought the film was pretty good. On the whole, I am in favor of the plan. 4.on behalf of sb/on sb’s behalf 做某人的代表或代言人: On behalf of my colleagues and myself I thank you. 5.put up with sb/sth : 忍受；容忍 There are many inconveniences that have to be put up with when you are camp

23、ing. 【思維拓展】 表示“忍受；容忍”的詞還有________________ 6.Remember---your contribution counts! 1) contribution n. 貢獻(xiàn) Charlie Chaplin made great contributions to the film industry. He has made an important contribution to the company’s success. make a contribution/contributions to … contribute vi. 捐贈，貢獻(xiàn)，

24、有助于 This new discovery will contribute to all humanity. 2) count: matter 有重要性 不用于進(jìn)行時 Every point in this game counts. It’s the thought that counts. 貴在心意 (used about a small but kind action or gift) 7. A green house is made of glass and is used for growing plants, especially during cold we

25、ather. Bamboo can be used for building houses. Bamboo can be used to build houses. The tree leaves can be used for medicine. 比較：The tree leaf can be used as a bookmark. 復(fù)習(xí)： be used to doing___________; used to do____________ 8. All scientists subscribe to the view that the increase in th

26、e earth’s temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. ①that 引導(dǎo)同位語從句，進(jìn)一步解釋view的內(nèi)容。 試譯：我認(rèn)為，應(yīng)該控制世界人口。I hold the view that the population of the world should be controlled. ②increase （vi.） in表示“在某方面增加\增長”。如： The village has increased in population.村子的人口增加了。 They have increased the price by 50%. The number of the students in this university has almost increased to 10,000. ③the burning of fossil fuels“化石燃料的燃燒”。the doing of sth是名詞化的動名詞用法。如： The making of paper first took place in China.造紙最早發(fā)生在中國。 5