雅思-7及答案解析.doc

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1、雅思-7 及答案解析(总分：85.00，做题时间：90 分钟)一、BListening Modul(总题数：1，分数：10.00)IWrite BNO MORE THAN THREE WORDS /BorB A NUMBER /Bfor each answer./IBEvent Details Type of event:/BI Example /IBDragon Boat Race/BBRace details/BDay in an all-out effort to save our national bird from extinction. There are three stages

2、 to this programme: Firstly, we have the Uscientific research/U stage - this involves research to find out more about what kiwis need to survive in the wild. Then secondly we have the action stage. This is where we go into the field and actually put our knowledge to work - we call this putting scien

3、ce into practice. And then we come to the third stage - the Uglobal education/U stage. By working with schools and groups like yourself, as well as through our award-winning kiwi website, we are hoping to educate people about the plight of the kiwi. As part of the action stage, which I just mentione

4、d, weve introduced Operation Nest Egg and this is where your money will be going. It works like this: Its a three-stage process. First of all, we go out to the kiwis natural habitat and we Ucollect kiwi eggs/U. This is the tricky part because it can be very difficult to find the eggs. Then, in safe

5、surroundings, away from predators . the Uchicks are reared/U. Now this can be done on predator-free islands or in captivity - theyre reared until they are about nine months old at which stage the chicks are returned to the wild. So far its proving successful, and since we started the programme some

6、34 chicks have been successfully raised this year and their chances of survival have increased from U5 to 85%/U. However, its not time to celebrate kiwi survival just yet. About 95% of kiwi chicks still dont make it to six months of age without protection. Which is why Operation Nest Egg is so impor

7、tant and we ask you to give generously today.(2)（分数：1.00）填空项 1:_ （正确答案：(shrill) call）解析：(3)（分数：1.00）填空项 1:_ （正确答案：sense of smell）解析：(4)（分数：1.00）填空项 1:_ （正确答案：fly）解析：(5)（分数：1.00）填空项 1:_ （正确答案：introduced animals）解析：(6)（分数：1.00）填空项 1:_ （正确答案：(scientific) research）解析：(7)（分数：1.00）填空项 1:_ （正确答案：global edu

8、cation）解析：三、BNO MORE THAN TH(总题数：3，分数：3.00)1（分数：1.00）填空项 1:_ （正确答案：eggs (are) collected）解析：2（分数：1.00）填空项 1:_ （正确答案：chicks (are) reared）解析：3（分数：1.00）填空项 1:_ （正确答案：5% to 85%）解析：四、B SECTION 3 I(总题数：1，分数：4.00)ICircle the correct letters BA-C/B./I（分数：4.00）(1).The professor says that super highways A lead

9、 to better lifestyles. B are a feature of wealthy cities. C result in more city suburbs.（分数：1.00）A.B.C. 解析：听力原文21-30 Tutor: Were very pleased to welcome Professor lsaac Nebworth to our tutorial group today and hes come to share one of his pet passions with us - city traffic and our western dependenc

10、e on the motor car. I believe questions are quite welcome throughout. Professor: Thank you. Well, I know youre all very familiar with the super highway here in Melbourne. But do super highways automatically lead to super wealth, as our politicians would have us believe? I think not. Tutor: Can you g

11、ive us an example of what you mean exactly? Professor: Sure . well, by continuing to encourage this dependence on the motor car, we simply create more congestion Uand more urban sprawl. /UAnd you can see that here in Melbourne right under your nose. Student: Excuse me. I would just like to say that

12、I feel the sprawl is part of the city. The freeways mean people can Uenjoy the benefits of living away from the centre . on larger blocks with gardens/U but still be able to drive back into the city centre for work or entertainment. Professor: Well, Im not convinced that people want to do that. And

13、is our money being well spent? It may be OK for you now but come back to me in five years time! Lets take City Link, for example, the new freeway here in Melbourne. Student: Well . I use the freeway all the time. I think its great. Professor: Ah yes, but it cost 2 billion to build, and you could hav

14、e gotten ten times the value by putting the money into public transport. If you Ugive the automobile road space, it will fill that space/U . and youll soon find youll be crawling along your City Link. Tutor: But surely, you cannot simply blame the car. Some of the blame must rest with governments an

15、d city planners? Student: Well there is an argument, surely, that building good roads is actually beneficial because most new cars these days are highly efficient - Uthey use far less petrol than in the past and emissions of dangerous gases are low/U. Old congested roads, on the other hand, encourag

16、e traffic to move slowly and its the stationary cars that cause the pollution and smog . whereas good roads increase traffic speeds and thus the amount of time cars are actually on the roads. Professor: Well . this is the old argument put forward by the road lobby but, for me its clear cut. Roads eq

17、ual cars which equal smog. Public transport is the way to go. Tutor: Now . on that topic of public transport, I read somewhere recently that Australia isnt doing too badly in the challenge to increase the use of public transport. Professor: Better than America, granted, but by comparison with Canada

18、, its not so good. For instance, if you compare Toronto with the US metropolis of Detroit only 160 kilometres away . in Detroit only 1% of passenger travel is by public transport whereas in Toronto its 24%, which is considerably better than USydney which can only boast 16%/U. Tutor: Well I think its

19、 encouraging that our least cardependent city is actually our largest city. U16% of trips being taken on public transport in Sydney, isnt too bad/U. Professor: But its a long way behind Europe. Take both London and Paris for instance . where 30% of all trips taken are on public transport. Tutor: Wel

20、l, they do both have an excellent underground system. Professor: . and UFrankfurt comes in higher still at 32%/U. Tutor: I understand that theyve been very successful in Copenhagen at ridding the city of the car. Can you tell us anything about that experiment? Professor: Yes indeed. Copenhagen is a

21、wonderful example of a city that has learnt to live without the motor car. Back in the 1960s they adopted a number of policies designed to draw people back into the city. For instance, they Upaid musicians and artists to perform in the streets/U. They also built cycle lanes and now 30% of the inhabi

22、tants of Copenhagen use a bicycle to go to work. Sydney, by comparison, can only boast 1% of the population cycling to work. Student: It could have something to do with all the hills! Professor: Then they banned cars from many parts of the city and Uevery year 3% of the city parking is removed/U and

23、 by constantly reducing parking theyve created public spaces and clean air. Student: Really! ! Student: Really! ! Professor: There are also freely available bicycles which you can hire for practically nothing. And of course, they have an excellent public transport system. Student: Oh, thats all very

24、 well for Copenhagen. But Id just like to say that some cities are just too large for a decent public transport system to work well. Particularly in areas with low population, because if there arent many people using the Uservice then they dont schedule enough buses or trains for that route/U. Profe

25、ssor: I accept that there is a vicious circle here, but people do need to support the system. Student: And secondly, Uthe whole process takes so long because usually you have to change . you know, from bus to train - that sort of thing/U, and that can be quite difficult. Ultimately its much easier t

26、o jump in your car. And often it turns out to be cheaper. Professor: Sure . but cheaper for whom, you or society? We have to work towards the ideal and not give in all the time because things are too difficult . Anyway, lets move on to some of the results of the survey . fade(2).The student thinks p

27、eople A like the advantages of the suburbs. B rarely go into the city for entertainment. C enjoy living in the city.（分数：1.00）A. B.C.解析：(3).The professor suggests that in five years time A City Link will be choked by traffic. B public transport will be more popular. C roads will cost ten times more t

28、o build.（分数：1.00）A. B.C.解析：(4).The student believes that highways A encourage a higher standard of driving. B result in lower levels of pollution. C discourage the use of old cars.（分数：1.00）A.B. C.解析：五、BList of cities:(总题数：2，分数：2.00)4（分数：1.00）填空项 1:_ （正确答案：Sydney）解析：5（分数：1.00）填空项 1:_ （正确答案：Frankfurt）

29、解析：六、B TWO /B(总题数：2，分数：2.00)6（分数：1.00）填空项 1:_ （正确答案：A）解析：7（分数：1.00）填空项 1:_ （正确答案：D）解析：七、BTWO /B(总题数：2，分数：2.00)8（分数：1.00）填空项 1:_ （正确答案：B）解析：9（分数：1.00）填空项 1:_ （正确答案：F）解析：八、BSECTION 4 I(总题数：1，分数：7.00)IComplete the notes below. Write BNO MORE THAN THREE WORDS /Bfor each answer./I BIReasons for preservin

30、g food/I/B Available all year For B31/B. In case of B32/B.（分数：7.00）(1)（分数：1.00）填空项 1:_ （正确答案：export/transit (overseas)）解析：听力原文31-40 Lecturer: In todays lecture Id like to look at the topic of food preservation and start by asking the obvious question Why do we need to preserve food? Well, apart from

31、 keeping it fresh for our daily needs, many foods, such as fruit and vegetables are only available at certain times of the year so if we want to be able to eat these foods ally ear round, we need to preserve them. We also need to Upreserve food for export overseas/U to make sure that it doesnt peris

32、h in transit, and lastly we need to be able to preserve food for when there are Ufood shortages/U. There are a number of methods of preserving food which involve both high and low temperatures, chemicals, irradiation and drying. Lets have a look at these in turn. In the 1870s the French scientist, L

33、ouis Pasteur, showed that micro-organisms in food could be destroyed by raising the temperature of the food - a process now known as pasteurisation. This involves heating milk to just 65C for 30 minutes. A new method, the ultra-high temperature or UHT process, involves heating milk to 150 for three

34、seconds. The advantage of treating milk in this way is thatU it lasts much longer/U though I tend to feel, and Im sure many of you would agree, that taste is somewhat sacrificed in the UHT process. Tin cans were first used in the early 1800s to store and preserve food. Just as they are now, the cans

35、 were tinplated, steel containers and the process had the advantage of being cost effective. UUnfortunately, however, there were many early cases of food-poisoning/U because the canning process was not fully understood at that stage. We now know the exact temperature and length of time each food nee

36、ds for proper preservation which has greatly Ureduced the risk of food-poisoning/U. People living in cold climates often preserved food by burying it in the snow and the Romans knew all about the advantages of packing food in ice but for most people this was not an option until the invention of the

37、refrigerator in 1834. Today, however, refrigeration is the most important means of preserving food because the food stays fresh without needing to be treated. However, Urefrigeration requires an electricity supply/U and unfortunately if the power goes off, so does the food! A variety, of chemicals c

38、an be added to food and youll find their names listed on the labels of cans and bottles. Salt is probably the oldest of all Uthe chemical preservatives/U and was used by many ancient civilisations for many years.Sugar also acts as a preservative and is used to preserve jams in much the same way that

39、 vinegar is used to pickle foods. UChemical preservatives are effective/U but they do not suit all foods and the processes involved are timeconsuming. Another method of preserving food is by drying it. Most foods are 75% to 90% water so if you remove the water the micro-organisms simply cant survive

40、. When food is dried it not only lasts a long time but it also becomes much lighter which is a big advantage as this Umakes it cheap to store, /Uthough some people argue that valuable nutrients are lost in the process. Early methods for drying food involved cutting it into strips and hanging it in t

41、he sun or over fires. But there are now a number of more modern methods which involve the use of recent technology. One of these is known as roller drying and its a highly effective way of making dried foods from liquids, such as soup. Have a look at this diagram to see how it works. Well, first of

42、all, Uthe hot soup is poured/U in at one end-here. The liquid spreads to form a thin layer on a heated belt. The liquid dries as it moves alonq. By the time it Ureaches the end of the belt/U, all the water has evaporated leaving Uonly dry powder/U. A blade then scrapes the dried material off the rol

43、ler and Ucaptures it in powder form/U. All you have to do is add boiling water and you have your hot soup back again, ready to drink! Another method is called freeze drying .(2)（分数：1.00）填空项 1:_ （正确答案：food shortages）解析：(3)（分数：1.00）填空项 1:_ （正确答案：lasts longer/lasts much longer）解析：(4)（分数：1.00）填空项 1:_ （正

44、确答案：food-poisoning/poisoning）解析：(5)（分数：1.00）填空项 1:_ （正确答案：electricity/electricity supply/supply of electricity/power）解析：(6)（分数：1.00）填空项 1:_ （正确答案：chemical preservation/add (adding) chemicals/using chemicals (not salt/sugar/vinegar)）解析：(7)（分数：1.00）填空项 1:_ （正确答案：cheap to store）解析：九、BTest Tip/B(总题数：3，分

45、数：3.00)10（分数：1.00）填空项 1:_ （正确答案：(hot) soup）解析：11（分数：1.00）填空项 1:_ （正确答案：(heated) belt）解析：12（分数：1.00）填空项 1:_ （正确答案：powdered soup/dried soup/dry soup）解析：十、BReading Module (总题数：4，分数：4.00)13.Why was the fence built? A to separate the sheep from the cattle B to stop the dingoes from being slaughtered by f

46、armers C to act as a boundary between properties D to protect the Australian wool industry（分数：1.00）A.B.C.D. 解析：Para 1: To protect their livelihood, the farmers built a wire fence .14.On what point do the conservationists and politicians agree? A Wool exports are vital to the economy. B The fence poses a threat to the environment. C The fence acts as a useful frontier between states. D The number of dogs needs to be reduced.（分数：1.00）A.B. C.D.解析：Para 2: . such a barrier would never be allowed today on ecological grounds. = people would protest against such a fence being built.15.How does t