人教版新课标选修六：Unit 4 Global Warming 课前预习案课内探究案课后拓展案（部分有答案）

Unit 4 Global Warming 课前预习案1
I. Reading comprehension：（带*的为B层）
*1.What is mainly discussed in the text
A. Carbon dioxide. B. Water vapour.
C. Gases in the atmosphere. D. Temperature increase.
2. According to the text, which of the following statements is NOT true
A. Carbon dioxide is a byproduct of the burning of fossil fuels.
B. All the scientists agree that the burning of more and more fossil fuels leads to the increase of carbon dioxide.
C. If we stop adding carbon dioxide and other greenhouse gases from now on, the temperature will stop going up.
D. It is still not clear what the effects of global warming will be.
3. George Hambley thinks that more carbon dioxide ____.
A. may lead to a catastrophe.
B. will do good rather than harm to the earth.
C. will cause the spread of disease.
D. will encourage a greater range of animals, thus threatening human beings.
4. By asking the two questions at the end of the article, the writer implies that ____.
A. we can do nothing about global warming
B. global warming is caused by human beings
C. we should not be too worried about global warming
D. human beings still have more worries about the effects of global warming
5. What will happen if we do nothing about global warming
A. It would cause the sea level to rise, storms, droughts, famines and so on.
B. The temperature will be surely lower.
C. The “greenhouse effect” will disappear.
D. It has nothing to do with us.
II. Decide which of these statements are true and which are false. For each false statement, give a true one.
1. Everyone believes that global warming is caused by the activities of humans.
2. Janice Foster believes that she can measure the future global rise in temperature.
3. The rise in carbon dioxide is causing a steady increase in global warming.
*4. George Hambley is worried about the effect of carbon dioxide on plant growth.
5. It is clear what the effects of global warming will be.
III. Reading for details
Divide the whole passage into several parts and give the general ideas.
Part1 (Paragragh______)___________________________________________ ________________________________________________________________.
Part2 (Paragragh______) _________________________________________
________________________________________________________________
Part3 (Paragragh______) ___________________________________________
No one knows ________________________________
Paraphrase: Which sentences in the passage can be replaced by the following ones
1.If there were no greenhouse effects, the earth would be about 33 degrees Celsius cooler.
________________________________________________________________
________________________________________________________________
2.Scientists also believe that the increasing burning of fossil fuels causes the increase in carbon dioxide.
________________________________________________________________
________________________________________________________________
3.Even though we begin to make less carbon dioxide and other greenhouse gases, the climate will go on warming for decades or centuries.
________________________________________________________________
________________________________________________________________
IV. Summary
There is no 1 that the earth is becoming warmer no matter whether it is a natural 2 .
Scientists believe that “greenhouse effect” begins when we add huge 3 extra carbon dioxide to the atmosphere by burning 4 . The increased 5 carbon dioxide is causing the 6 temperature to go up.
Scientists also agree that the burning of more and more fossil fuels has 7 this increase in carbon dioxide. An increase of five degrees would be a 8 . Scientists can’t predict the 9 well enough to know what to expect.
On the other hand, a scientist, Gorge Hambley predicts that any warming will be mild with few bad environmental 10 . He 11 that more carbon dioxide will encourage a greater 12 of animals—all of which will make life for humans better.
However, greenhouse gases continue to 13 in the atmosphere and the climate is going to 14 warming.
1. ______________ 2. ______________ 3. ______________4. _____________
5. ______________ 6. ______________ 7. ______________ 8. _____________
9. ______________ 10. ______________ 11. ______________
12. ________________ 13. ______________ 14. ______________
Unit 4 Global warming 课内探究案
【自主学习】
News from China Daily
After reading, answer the question.
192 nations at UN climate change conference in Copenhagen (哥本哈根)
COPENHAGEN: The largest and most important UN climate change conference in history opened Monday, with delegates（代表） from 192 nations warned that this could be the best, last chance for a deal to protect the world from calamitous(灾难的) global warming.
The biggest climate talks in history are aimed at working out a new deal to curb global warming, replacing the 1997 Kyoto Protocol.
"I am very optimistic for Copenhagen," United Nations leader Ban Ki-moon（潘基文）said in an interview in the Danish daily newspaper Berlingske Tidende. "We will produce an agreement all UN member states will sign, which is historic," Ban said.
"We have the right political spirit," Ban added. "All heads of state and government have the same goal - to prevent global warming."
So far 105 world leaders have accepted the invitation, including Obama（奥巴马）, Chinese Premier Wen Jiabao and Indian Prime Minister Manmohan Singh(曼莫汉.辛格).
Question: Why have so many heads of state and government come to attend the UN climate change conference in Copenhagen
_______________________________________________________________________________________________________________________________
【合作探究】（带*号的为B层）
1. What is a greenhouse How does it work
________________________________________________________2. How many scientists mentioned in the article What do they think about global warming Who do you agree with
________________________________________________________________________________________________________________________________________________________________________
*3. What energy sources are renewable and what ate non-renewable To prevent global warming, what should we do
________________________________________________________________________________________________________________
Analyze the following difficult sentences in the text.：
1. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.
________________________________________________________________________________________________________________
2. On the one hand, Dr Froster thinks that the trend which increases the temperature by 5 degrees would be a catastrophe. On the other hand, there are those, like George Hambley, who are opposed to this view and believer that we should not worry about high levels of carbon dioxide in the air.
________________________________________________________________________________________________________________
精讲点拨
That probably does not seem much to you or me, but it is a rapid increase when ____________ to other natural changes. So how has this ________ ________(=happen) and does it matter
1)这是一个含有________所引导的省略形式的___________从句，原句为：________________________________
________ ___________ ______ (与…相比)the size of the whole earth, the biggest ocean does not seem big at all.
2)____________ _______ (与…相比)Tom, John is a hard worker.
Life is often ____________ ____ voyage.人生常被比作航海。
If you ____________ British English _______ American English, you’ll find many differences. 把英式英语与美式英语比较
*3) This has not ________ ________ overnight. 冰灯三尺，非一日之寒。
I’ll never understand how it ________ ________ ________ you were late three times a week. 怎么会…
The Olympic Games of 2012 will ________ ________ in London.
I _____________ ____ see him on my way home.= ____ _____________ _____ I saw him on my way home.
Two world wars _______ _______ last century.
有效训练
1.They also agree that___ ___the burning of more and more fossil fuels____ has ___________ ___(导致) this increase in carbon dioxide.
2.Greenhouse gases continue to __________ ____(逐渐增加) in the atmosphere.
3. In fact, Hambley______(说), “More carbon dioxide is actually a positive thing.”
4. How ____ ____ ________ ________ ______ he knew where we were
他怎么知道我们在什么地方？
5. His illness ____________ ____(由于) bad food.
6. He ____ ____________ ____ the plan. (反对)
7. There ____(be) a quantity of rice/rats in the room.
Unit 4 Global warming 拓展案（带*号的为B层）
I. Word spelling.
!. It’s a lot cheaper if you buy it in q______________.
2. One of the c______________ of our planet’s being warming up is an increase in the number of natural disasters.
3. Can you explain these p______________ that more fish died in the river
4. The young _____________(说明) that he had not seen the book before.
5. The earthquake was a ______________(大灾祸) in which many people lost their lives.
6. This ____________(数据) was collected from 69 states.
7. The price of ____________(燃料) is going up.
8. She was trembling with excitement, but her voice was ___________(平稳的).
9. Do you know the ____________(平均) monthly rainfall in this area
10. Motion is the mode of ______________(存在) of matter.
plete the following sentences.
1. The problem begins when we add huge ____________ ___(许多的，大量的) extra carbon dioxide into the atmosphere.
2. All scientists ______________ ____(赞同) the view ______ the increase in the earth’s temperature is due to the burning of fossil fuels.
3. Some ______________(副产品) of this process are called “greenhouse” gases, ______ ______ ____________ _____ ____ _______(其中最重要的是) is carbon dioxide.
4. _______ ____ ____ ________ ______(毫无疑问) the earth is becoming warmer and ______ ___ ___ human activity ______ has cause this global warming __________ ________(而不是) a random but natural phenomenon.
5.They predict that any warming will be mild with ______ bad _______________ _______________(很少的环境影响). *6.______________(和…相比) British football with American football, you’ll find many differences.
7.Man’s life is often ____________________ (比作) a candle.
8. ________________________(大体上), I’m in favor of your opinion.
9. The man _____________________(瞥了一眼) his watch and was surprised to see that it was nearly midnight.
*10. ___________________________(大量的) rice ____(be) sent to the front the other day.
*11.The trend which increases the temperature ____(to/by) 5 degrees would be a catastrophe.
III. Grammar and vocabulary
1. You shouldn’t listen to rumor, you can ____ me.
A. depend B. depend on C. rely D. believe on
2. We’ve ____ sugar. Ask Mrs Jones to lend us some.
A. run out B. run short C. run out of D. run off
3. I wonder how it ____ that she should eat so much food a meal.
A. came over B. came out C. came about D. acme up
*4. The accident is said ____ the driver’s careless driving and the thick fog.
A. to have been resulted in B. to result from
C. having resulted in D. to have resulted from
5. Project so far has been very good. ____, we are sure that the project will be completed on time.
A. However B. Otherwise C. Therefore D. Besides
6. Don’t expect too much of her. After all, she is a child of ____ intelligence.
A. average B. slight C. strange D. different
*7. They couldn’t get accustomed to the coldness in the north so they decided to move somewhere with a warm ____.
A. climate B. weather C. temperature D. atmosphere
8. ____ was not until the early 20th century ____the importance of his ideas was realized.
A. what; that B. It; that C. That; so D. It; when
*9. It is in the west of China ____ there is no doubt ____ it is going to rain tomorrow.
A. where; whether B. that; that C. that; whether D. where; that
10. ____ is often the case, boys prefer to take part in sports.
A. It B. As C. What D. That
IV. Translation.
1. 感冒时流行病。(widespread)
_________________________________________________________________
2. 这条河是几年前才形成的。(come into existence)
_________________________________________________________________
3. 总的看来， 地球的增温是人人皆知的一个现象。（phenomenon）
_________________________________________________________________
____________________________________________________________
4. 世界上消耗能量最多的是发达国家。(It is…that…)
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Global warming 答案
拓展案
I. 1. quantity 2. consequences 3. phenomena 4. stated
5. catastrophe 6. data 7. fuel 8. steady
9. average 10. existence
II. 1. quantities of 2. subscribe to…that
3. byproducts…the most important one of which
4. There is no doubt that…that it is…that…rather than
5. few…environmental consequences
6. Comparing 7. compared to 8. On the whole 9. glanced at
10. A large quantity of…was/ Large quantities of…were
11. by