完整word版《英语听力教程3》听力原文与答案.docx

1、完整word版英语听力教程3听力原文与答案英语听力教程3答案与听力材料UNIT 1Part I Getting readyA.B. Keys: 1: burning of the forests/tree removal (deforestation)/reduction of the worlds rain forests 2: global warming/greenhouse effect/emissions of CO2Part II The Earth at risk (I)A. Keys:1. a. More people- more firewood- fewer treesb.

2、 More domestic animals- more plants- fewer available plants a, b- More desert- move south- desrtt expanding south- no grass2. Growing crops stabilize soil, without them the top soil just blows away. But if there isnt enough rain the crops dont grow. 3. People try to grow food to support themselves o

3、r to create ranches where cattle can be raised, or to get hardwood for export, or to make way for an iron ore mine B. Keys: 1: Sahara Desert 2: North America & most of Europe 3: top soil blowing away 4: tropical forests destruction 5: animal/plant species becoming extinct 6: climate change for the w

4、hole worldPart III The Earth at risk (II)A. Keys: 1: Trees would hold rainfall in their roots. When forests in the higher up-river have been destroyed, all the rain that falls in the monsoon season flows straight into the river and starts the flooding. 2: He implies that some national governments ju

5、st consider the results of their policies in the near future, or just think as far ahead as the next election.B. Keys: 1: flooding in Bangladesh 2: Action to be taken 3: population controlPart IV More about the topic: The Effects of Global WarmingKeys: 1: Warming up of the world 2: Effects of global

6、 3: reduced potential for food production 4: change of patterns of hear-related food poisoning, etc.Part V Do you know?A. Keys: 1: F 2: F 3: F 4: F 5: TB. Keys:Dos 1: your towels 2: Cut out 3: a wall-fire 4: fridge 5: wait until youve a full load 6: a complete meal Donts 7: iron everything 8: the ir

7、on up 9: the kettle 10: to the brim 11: hot foodTape scriptPart I Getting readyA.B. 1.The Amazon forests are disappearing because of increased burning and tree removal. In September, satellite pictures showed more than 20000 fires burning in the Amazon. Experts say most of these fires were set by fa

8、rmers. The farmers were attempting to clear land to grow crops. The World Wildlife Fund says another serious problem is that too many trees in the Amazon rain forest are being cut down. The World Wildlife Fund says the fires show the need for urgent international action to protect the worlds rain fo

9、rests. The group warns that without such action some forests could be lost forever. 2. Environmental issues swell to the full in Berlin this week, for the UN spongsored conference on global warming and climate change is the first such meeting since the Rio summit three years ago. With scientists and

10、 governments now generally ready to accept that the earth climate is being affected by emissions of CO2 and other greenhouse gases, over a hundred countries are sending delegations. But how much progress has been made implementing the greenhouse gas reduction target agreed on at Rio? Simon Dary repo

11、rts. Part II The Earth at risk (I)A.I (Interviewer): Brian Cowles is the producer of a new series of documentaries called The Earth at Risk which can be seen on Channel 4 later this month. Each program deals with a different continent, doesnt it, Brian? B (Brian Cowles): Thats right. We went to Amer

12、ica, both North and South and then we went over to Africa and South-East Asia. I: And what did you find in each of these continents? B: Starting with Africa, our film shows the impact of the population on the environment. Generally speaking, this has caused the Sahara Desert to expand. Its a bit of

13、a vicious circle we find. People cut down trees for firewood and their domestic animals eat all the available plants and so consequently they have to move south as the Sahara Desert expands further south. I mean, soon the whole of Mali will become a desert. And in East Africa: here the grasslands ar

14、e supporting too many animals and the result is, of course, theres no grass nothing for the animals to eat. I: I see. And the next film deals with North America? B: Thats right. In the USA, as you know, intensive agriculture requires a plentiful supply of rain for these crops to grow, I mean if ther

15、e isnt enough rain the crops dont grow. And growing crops stabilize soil, without them the top soil just blows away. This is also true for any region that is intensely farmed most of Europe, for example. I: And what did you find in South America? B: In South America (as in Central Africa and Souther

16、n Asia) tropical forests are being cut down at an alarming rate. This is done so that people can support themselves by growing food or to create ranches where cattle can be raised to be exported to Europe or America as tinned meat. The problem is that the soil is so poor that only a couple of harves

17、ts are possible before this very thin soil becomes exhausted. And it cant be fed with fertilizers like agricultural land in Europe.For example, in Brazil in 1982 an area of jungle the size of Britain and France combined was destroyed to make way for an iron ore mine. Huge numbers of trees are being

18、cut down for exports as hardwood to Japan, Europe, USA to make things like luxury furniture. These forests cant be replaced the forest soil is thin and unproductive and in just a few years, a jungle has become a waste land. Tropical forests contain rare plants (which we can use for medicines, for ex

19、ample) and animals one animal or plant species becomes extinct every half hour. These forest trees also have worldwide effects. You know, they convert carbon dioxide into oxygen. The consequence of destroying forests is not only that the climate of that region changes (because there is less rainfall

20、) but this change affects the whole world. I mean, over half the worlds rain forest has been cut down this century. Part III The Earth at risk (II)A.I: So, Brian, would you agree that what we generally think of as natural disasters are in fact man-made? B: Yes, by and large. I mean, obviously not hu

21、rricanes or earthquakes, but take flooding, for example. Practically every year, the whole of Bangladesh is flooded and this is getting worse. You know, the cause is that forests have been cut down up in Nepal and India, I mean higher up-river in the Himalayas. Trees would hold rainfall in their roo

22、ts, but if theyve been cut down all the rain that falls in the monsoon season flows sraight into the river Ganges and floods the whole country. The reason for flooding in Sudan is the same the forests higher up the Blue Nile in Ethiopia have been destroyed too. I: Well, this all sounds terribly depr

23、essing. Um . What is to be done? I mean, can anything be done, in fact?B: Yes, of course it can. First, the national governments have to be forward-looking and consider the results of their policies in ten or twenty years, not just think as far ahead as the next election. Somehow, all the countries

24、in the world have to work together on an international basis. Secondly, the population has to be controlled in some way: there are too many people trying to live off too little land. Thirdly, we dont need tropical hardwood to make our furniture its a luxury people in the West must do without. Softwo

25、ods are just as good, less expensive and can be produced on environment-friendly tree farms, where trees are replaced at the same rate that they are cut down. I: And, presumably, education is important as well. People must be educated to realize the consequences of their actions? B: Yes, of course.

26、I: Well, thank you, BrianB.I: So, Brian, would you agree that what we generally think of as . er. as er . natural disasters are in fact man-made? B: Yes, by and large . er . I mean, obviously not hurricanes or earthquakes, but take flooding, for example. I mean, practically every year, the whole of

27、Bangladesh is flooded and this is getting worse. You know, the cause is that forests have been cut down up in Nepal and India . I mean . higher up-river in the Himalayas. Trees .er . would hold rainfall in their roots, but if theyve been cut down all the rain that falls in the monsoon season flows s

28、traight into the river Ganges and floods the whole country. The reason for flooding in Sudan is the same the forests higher up the Blue Nile in Ethiopia have been destroyed too. I: Well, this all sounds terribly depressing. Um . what is to be done? I mean, can anything be done, in fact? B: Yes, of c

29、ourse it can . er . first, the national governments have to be forward-looking and consider the results of their policies in ten or twenty years, not just think as far ahead as the next election. Somehow, all the countries in the world have to work together on an international basis. Secondly, the p

30、opulation has to be controlled in some way: there are too many people trying to live off too little land. Thirdly, we dont need tropical hardwood to make our furniture its a luxury people in the West must do without. Softwoods are just as good, less expensive and can be produced on environment-frien

31、dly tree farms, where trees are replaced at the same rate that they are cut down. I: And, presumably, education is important as well. People must be educated to realize the consequences . um . of their actions? B: Yes, yes of course. I: Well, thank you, Brian. Part IV More about the topic: The Effec

32、ts of Global WarmingThe world is warming up. We know this because average temperatures are the highest since scientists started measuring them 600 years ago. The increase is about 0.2 every year. This may seem very slight, but we know that slight changes in temperature can have a big effect on other things. Most scientists now believe this global warming is due to human activity. Jeff Jenkins is head of Britains Cli