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1、Select unitTOCLead-inBasic listening.Listening in.Speaking outLet s talkFurther L and SCheck&checkUnit 2 Our globe is in danger!Done with this task.Your current score:93%Unit 2 testNextDirections:Click on the speaker to the left to start playing the audio recordings for Parts lz II and III.They wipl
2、ayed continuously.Once the recording starts playing,please do NOT click on either the speaker icon or the Quiz link in the menu bar above.Otherwise,you may lose the chance of hearing the complete recording.Part I ScriptDirections:Listen to the short dialogs,and then choose the correct answers to the
3、 questions.You w川hear the recording twice.After the first playing,there will be time for you to choose the correct answers.Use the second playing to check your answers.1.(Listen to the audio recording for the question.)C A.It is the biggest problem.C B.It is the second most important problem.E C.It
4、is important but not the most urgent problem.C D.It is not important.2.(Listen to the audio recording for the question.)C A.The same as the mans.e B.The environment is hopeless.K C.The environment is improving.C D.The environment is free from problems.3.(Listen to the audio recording for the questio
5、n.)C A.Its too late for the government in the womans home town to protect water resources.E B.The water in the mans home town is not polluted.C C.People in the womans home town have a strong sense of water conservation.匕 D.The man invites the woman to visit his home town.4.(Listen to the audio recor
6、ding for the question.)C A.Go to the zoo.巴 B.Read a book.,E C.Join in a club.C D.Go for a trip.5.(Listen to the audio recording for the question.)亡 A.Plastic.匕 B.Coal.C C.Exhaust air./KE D.Waste rubber.Part II ScriptDirections:Listen to the passage three times.When the passage is read for the first
7、time,listen for thegeneral idea.When the passage is read the second time,fill in the blanks numbered from SI to S7 withthe exact words you hear.For blanks numbered from S8 to S10z write down either the exact words youhear or the main points in your own words.When the passage is read the third time,c
8、heck youranswers.Every day,the average person breathes in about 20,000 liters of air.Everytime we breathe,we risk inhaling dangerous(1)chemicalsthat have foundtheir way into the air.Air pollution includes all pollutants found in theatmosphereThesedangerous substances can be either in the form of gas
9、es orparticlesAir pollution can be found both outdoors and indoors.Pollutants can be(4)I particles i i T j,i -i ,.i ,/(I lasts,I inside buildings,causing indoor pollution that I for along time.The sources of air pollution are both natural andhuman-basedAs onemight expect,humans have been producing i
10、ncreasing amounts of pollution astime has(7)1,and they now account for the majority of pollutantsreleased into the air.Air pollution has been a problem throughout history.(8)Even in Ancient Rome people complained about smoke put into the atmosphereThe effects of air pollution are diverse and numerou
11、s.(9),and severelyaffects the natural ecosystem.Because it is located in the atmosphere,air pollution is able to traveleasily.As a result,air pollution is a global problem and has been the subjectof global cooperation and conflict.Some areas now suffer more than others from air pollution.(10)1 Citie
12、sYour answerCorrect answerchemicalschemicalsyatmosphereatmosphere-3)particlesparticlesX(4)particlestrappedlastshuman-basedlastshuman-based-6)progressed progressedV(8)Even in Ancient Rome people complained about Even in Ancient Rome people complained aboutsmoke put into the atmosphere smoke put into
13、the atmosphereX(9)Air pollution can have serious consequences forthe health of human beingsX(10)Cities Cities with large numbers of automobiles orthose that use great quantities of coal oftensuffer most severely from air pollution problemsPart III ScriptDirections:Listen to the following recording,a
14、nd then choose the correct answers to the questions.Youwill hear the recording twice.After the first playing,there will be time for you to choose the correctanswers.Use the second playing to check your answers.1.Why did the number of pandas drop sharply this century?x mE A.Widespread forest fires.LJ
15、 B.The change of bamboo forests into farmland.C C.The global warming.C D.Increased hunting.2.What is the strange nature of giant pandas mentioned in the passage?C A.Peaceful.C B.Cheerful.E C.Solitary.C D.Lonely.3.Why is the breeding program not a success?白 A.The temperature has changed a lot.C B.The
16、 rainfall has changed a lot.e C.The panda does not like to live in zoos.E D.The panda likes to live alone.4.Why did people start debating about the use of cloning in conservation?C A.Because this technology is up-to-date.C B.Because this technology does not involve a moral issue in animals.E C.Becau
17、se the breeding method is unsuccessful.C D.Because the breeding method must be combined with cloning.5.What would be the best title for the passage?白 A.How to save the giant panda.V E B.The danger of extinction of the panda.e C.The importance of the protection of the panda.C D.Success in protecting
18、the panda.Part IVDirections:Choose the best answer to each of the following statements.1.The Chinese government has been encouraging people to plant trees along the edges of the GobiDesert.Now those trees act as wi nd.C A.bars7 E B.barriersC.preventionD.destruction2.Government organizations are help
19、ing people to dispose safely old refrigerators or,in the case ofcars,to upgrade the air conditioning.O A.away匕 B.off区 C.ofC D.out of3.As the students grow older,they can be more aware of all the environmental problems that areC A.happening onC B.getting along C.getting onE D.going on4.If people thro
20、w cigarette butts on the floor,they s h o u l d.C A.fine巴 B.be fine*K C.be finedC D.get fine5.When the algae die,they are broken by the action of the bacteria.e A.upB.inC.downLJ D.with6.Statistics show that China invested US$34,6 billion in clean energy last y ear;t he UnitedStates which invested US
21、$18.6 billion.*K A.exceedingC B.expiringC C.excludingC D.extruding7.China has already some remarkable steps to reduce damage to the environment.C A.posed B.gone C.gotE D.takenA thick cloud of pollution covering southern Asia is damaging agriculture and affecting rainfallA.extentsB.rangesC.degreesD.l
22、evels9.A lot of clubs promote environmental safety,and some TV programs,too.They talk aboutenvironmental safety and.A.thing like thatB.stuff like thatC.such stiffD.such thing10.They say the cloud reduces the amount of sunlightpercent.the Earths surface by as much as 15A.reachB.reachedC.reachingD.fro
23、m reachingELearning tool kitSearch onliiGO!Word tipsLanguage and culture tipsOverviewLearning strategiesScriptQuestion 1M:Ill admit it:Im confused about the state of the world and the environment.I readthat 38 top scientists meeting in Denmark said we should forget about globalwarming.W:Yesz they sa
24、id global warming is important,but there are other problems we shouldsolve like AIDS,hunger;and Malaria.First things first is their theme.Q:What do some of the top scientists think about global warming?Question 2M:Its suicide!Were killing ourselves with acid rain.Smoke from burnt coal mixes withsunl
25、ight to create poisonous sulfuric acid that destroys plants,animals and peoplelike us.W:Hold on!What youve said is true,but governments everywhere are punishingpolluters and encouraging alternate energy sources like solar power and wind power.Things are looking up.Q:What is the womans point of view?
26、Question 3W:Water pollution in my home town is very serious.I think its high time that thegovernment take some measures to tackle the problem before its too late.M:I think Im gonna make your eyes green with envy if I tell you that the water in myhome town is well conserved.Q:What can we learn from t
27、he dialog?Question 4W:John,are you interested in joining in our club to raise money for the protection ofwild birds in the States?M:Why not?I learnt from an article the other day that the wildlife in our country isdiminishing.Ill certainly do my part.Its really sad if we can only see wild birds inzo
28、os.Q:What is the man going to do?Question 5W:Mark,did you hear about black pollution?I know that white pollution refers toplastic pollution.Is black pollution related to coal or air exhausted by factories?M:No,honey.Its the pollution by the waste rubber.Its a serious problem in ourcountry.Q:What cau
29、ses black pollution?ScriptEvery day,the average person breathes in about 20,000 liters of air.Everytime we breathe,we risk inhaling dangerous chemicals that have found theirway into the air.Air pollution includes all pollutants found in the atmosphere.Thesedangerous substances can be either in the f
30、orm of gases or particles.Air pollution can be found both outdoors and indoors.Pollutants can betrapped inside buildings,causing indoor pollution that lasts for a longtime.The sources of air pollution are both natural and human-based.As one mightexpect,humans have been producing increasing amounts o
31、f pollution as timehas progressed,and they now account for the majority of pollutants releasedinto the air.Air pollution has been a problem throughout history.Even in Ancient Romepeople complained about smoke put into the atmosphere.The effects of air pollution are diverse and numerous.Air pollution
32、 canhave serious consequences for the health of human beings,and severelyaffects the natural ecosystem.Because it is located in the atmosphere,air pollution is able to traveleasily.As a result,air pollution is a global problem and has been thesubject of global cooperation and conflict.Some areas now
33、 suffer more than others from air pollution.Cities with largenumbers of automobiles or those that use great quantities of coal oftensuffer most severely from air pollution problems.ScriptThe panda is found only in the western mountains of China.It is one of themost popular animals in the world.Altho
34、ugh it is protected by the Chinesegovernment by strict laws,it is still in serious danger of extinction.Experts guess that there are altogether fewer than 1,000 giant pandas leftin China.The pandas live in bamboo forests in the high mountains.Theirnumbers fell dramatically earlier this century when
35、large areas of bambooforest were cut down and turned over to agriculture.To deal with the crisis,experts suggested that special reserves be set upin the remaining forest to protect the pandas.Also,pandas were taken into zoos to begin a breeding program and the pandasbred there could one day be retur
36、ned to the wild.Since the panda is a nationalsymbol in China,the program received a lot of attention.However,the pandais a very solitary creature,and the number of pandas in the wild continuesto drop.For years,zoos have spent millions of dollars to place pandastogether in breeding pairs.Almost all o
37、f these actions have ended infailure.As a result,experts predict that pandas will be extinct within40 to 100 years unless drastic measures are taken.Because of the strangely solitary nature of the giant panda,the debate aboutthe use of cloning in conservation has emerged in China.Today mankind faces the loss of one endangered species after another throughthe destruction of the environment.People cannot afford to lose the panda,which is found nowhere outside China.