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随时随地学习
1、【题目】Part V Writing
Directions: For this part, you are allowed 30 minutes to write a composition on the topic: Keeping Fit. You should write at least 100—120 words and you should base your composition on the outline (given in Chinese) below:
1、保持健康的重要性;
2、保持健康的有效途径;
3、我的做法。
答案：
Keeping Fit
Obviously, health is more important than anything else we have in this world. Good health is a necessity for us to enjoy our life and pursue our dreams in the society. On the other hand, poor health may lead to poor chances in our career, making us pessimistic about our future. In other words, good health means more chances and much happier life in the world.
There are some effective ways to keep us healthy. Firstly, we have to form a good habit in our daily life. Franklin once said that early to bed and early to rise made one healthy and wealthy. That is to say, a good habit of life is very important for us to be successful in our career. Besides, drinking and smoking do great harm to our health, so you have to keep away from them. Secondly, exercises may keep us very strong. Although each of us is very busy with our daily work and study, we will never forget to spend some time doing exercises. Thirdly, a balanced diet is a must to keep us healthy. We’d better not have too much fat and sugar, which may cause us to become overweight. Vegetables and fruits provide us various vitamins; therefore, do not hesitate to enjoy these foods.
In conclusion, health is very valuable for each of us. If you could follow the advice we’ve proposed above, you will be sure to keep fit and enjoy your happy life.
解析：
暂无解析
1、【题目】Part IV Translation
The captain realized that the men tried to deceive him so he made them work very hard for the rest of the voyage. (Passage One)
答案：
船长意识到这些船员是要欺骗他，因此，在余下的航程里他让他们干更累的活。
解析：
暂无解析
1、【题目】PartVWriting
写作指导
这是一篇描写文(Description)。用通俗的话说，描写文就是用文字给人物、地点、景物画象。一篇描写文主要是通过所感受的细节——所见所闻发展而来的。在写人时，不仅仅要用细节描写其外貌，而要注重通过他的言行来表现其人物性格、思想和品德，更要抓住他区别于他人的性格特点，这样就容易给读者留下深刻的印象。短文的第一、二段叙述故事发生的时间、地点，故事发生的原因及故事所涉及的人物。文章的三、四、五段描写的是人物的外貌，穿着及性格特点。通过对人物言行的简单描写来揭示主人翁的助人为乐的高尚精神。短文的最后一段，要用一句话概括作者对主人翁的看法：Agoodguy。文章有描述，有议论，要加叙加议，有血有肉，上下文连贯要紧密，首尾要呼应，人和事要给人们留下深刻印象。
答案：
Sample Writing
The First Impression of My Roommate
It was my first day at the institute. I got into the building where I was going to live, and looked door after door for my name. At last I found it. In the room, there was already a student making his bed. After we said “how do you do?” to each other, he continued his work, paying no more attention to me. I looked around the room and found that it had been thoroughly cleaned. No doubt it was he who had done it.I looked at him. He was thin, short and dark. His hair was like a bundle of straw. His dirty clothes and tired look told me that he had had a long journey. His clothes were made of cheap cloth, and he wore a pair of rubber shoes, which were very unfashionable. He was not a very smart freshmen at all.
The second time he spoke, his accent told me that he was from the south. “Shall I help you to get your luggage from the office?”
I did not refuse since I really needed help. He was quick in movement. He walked out of the room and was soon far ahead of me to the office.
“A good guy,”I said to myself.“I will make friends with him ”,and I hurried and caught up with him.
解析：
暂无解析
1、【题目】PartIIICloze
Directions:Therearetwentyblanksinthefollowingpassage.Foreachblanktherearefourchoices.ChoosetheonethatbestfitsintothepassageandthenmarksyouranswerontheAnswerSheet.
Whatmakesachildspeakalanguagehaslongbeenapuzzletolinguists.61speaking,therearetwoschoolsoflinguists,bothofwhomtrytoexplain62achildpicksupalanguagesoeasily.Thefactthatachildpicksalanguage63is64:Atoneyearold,achildisabletosay“bye-bye”;attwo,heisabletousefifty;bytherehebeginsto65tenses.ThefamousAmericanlinguistNoamChomsky66thathumanbeinghaveasortofbuilt-insystemforlanguageuse,andthatthe67is68.Childrenarenottaughtlanguage69theyaretaughtarithmetic.Otherlinguists,70,holdtheviewthatachildlearns71ofhislanguagefromthehintsintheenvironment.72,theoristsofbothschools73thatthereisabiologicalbasisforlanguageuse.The74iswhichismoreimportant,theinnerabilityortheenvironment.Thisiscertainlyafield75tobeexplored.Researchersfrombothschoolsarebusyfindingevidenceto76theirowntheory,but77sideispersuadingtheother.
Itseemsthatinorderto78whyachildlearnsalanguagesoeasily,wehaveto79thejointeffortsofbothschools.Somelinguist,likeDeVilliers,hasrecognizedthevalueofcooperation,and80linguistsofbothsidestoworktogether.
61.A.SurprisinglyB.PersonallyC.ProperlyD.Roughly
62.A.thatB.whenC.whyD.how
63.A.independentlyB.naturallyC.withouthelpD.withease
64.A.confusingB.surprisingC.questionedD.suspected
65.A.masterB.studyC.haveD.get
66.A.doubtsB.believesC.realizesD.criticizes
67.A.helpB.teacherC.environmentD.hint
68.A.quiteessentialB.veryimportantC.notnecessaryD.onlysecondary
69.A.asB.forC.whenD.though
70.A.inparticularB.asaresultC.howeverD.therefore
71.A.alittleB.someC.nothingD.most
72.A.BeforeB.FromnowonC.JustnowD.Bynow
73.A.suspectB.disagreeC.agreeD.realize
74.A.caseB.argumentC.problemD.question
75.A.waitingB.planningC.neverD.unlikely
76.A.provideB.createC.supplyD.support
77.A.notaB.oneC.neitherD.either
78.A.findoutB.ruleoutC.searchforD.lookfor
79.A.getridofB.trustinC.relyonD.persistin
80.A.orderedB.criticizedC.challengedD.urged
答案：
61-65 DCDBA
66-70 BCDAC
71-75 DDCDA
76-80 DCACD
解析：
暂无解析
1、【题目】Directions:
In thissection,you will hear two long conversations.At the end of each conversation, you will hear some questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then mark the corresponding letter on the Answer Sheet with a single line through the centre.
Questions 1 to 4 are based on the conversation you have just heard.
1、 A. The collection of precious metals.
B. A standard measuring weight unit.
C. The value of precious metals.
D. A new metric system of measurement.
2、 A. Checking the accuracy of scales.
B. Calculating the density ofmetals.
C.Observing humidity of atmosphere.
D.Measuring amounts of rainfall.
3、 A. It has been rusty. B. It was not scientific.
C. It was of low quality. D. It was out of date.
4、 A. It is very cheap. B. It is difficult to say.
C. It is too expensive. D. It is reasonable.
Questions 5 to 8 are based on the conversation you have just heard.
5、 A. She is busy writing a biological article.
B. She is busy with a program about endangered species.
C. She is busy reading some books on economics.
D. She is busy with two research papers.
6、 A. Some species are impossible to conserve.
B. People are less conscious of saving endangered species.
C. Funds are difficult to get to conserve endangered species.
D. It is difficult to determine which animals are endangered.
7、 A. The relatives of the tailed toad have been extinct.
B. The varieties of the tailed toad are helpful to the research ofevolution.
C.If the tailed toad is well conserved,many other species will be better saved.
D.If the tailed toad was extinct,some myth about evolution would lose.
8、 A. The man is busy preparing the research paper.
B. The woman should hand two papers in on the same day.
C. The man is reading a hook only about biology.
D. The woman is glad to make a decision on which animal to save.
答案：
1-5:BACDD 6-8:CDB
解析：
暂无解析
1、【题目】Onceitwaspossibletodefinemaleandfemaleroleseasilybythedivisionoflabor.Menworkedoutsidethehomeandearnedtheincometosupporttheirfamilies,whilewomencookedthemealsandtookcareofthehomeandthechildren.Theseroleswerefirmlyfixedformostpeople,andtherewasnotmuchopportunityforwomentoexchangetheirroles.Butbythemiddleofthiscentury,men’sandwomen’sroleswerebecominglessfirmlyfixed.
Inthe1950s,economicandsocialsuccesswasthegoalofthetypicalAmerican.Butinthe1960sanewforcedevelopedcalledthecounterculture.Thepeopleinvolvedinthismovementdidnotvaluethemiddle-classAmericangoals.Thecounterculturepresentedmenandwomenwithnewrolechoices.Takingmoreinterestinchildcare,menbegantosharechild-raisingtaskswiththeirwives.Infact,someyoungmenandwomenmovedtocommunalhomesorfarmswheretheeconomicandchildcareresponsibilitiesweresharedequallybybothsexes.Inaddition,manyAmericansdidnotvaluethetraditionalmaleroleofsoldier.SomeyoungmenrefusedtobedraftedassoldierstofightinthewarinVietnam.
Intermsofnumbers,thecounterculturewasnotaverylargegroupofpeople.ButitsinfluencespreadtomanypartsofAmericansociety.Workingmenofallclassesbegantochangetheireconomicandsocialpatterns.Industrialworkersandbusinessexecutivesalikecutdownon“overtime”worksothattheycouldspendmoreleisuretimewiththeirfamilies.Somedoctors,lawyers,andteachersturnedawayfromhighpayingsituationstopracticetheirprofessionsinpoorerneighborhoods.
Inthe1970s,thefeministmovement,orwomen’sliberation,producedadditionaleconomicandsocialchanges.Womenofallagesandatalllevelsofsocietywereenteringtheworkforceingreaternumbers.Mostofthemstilltooktraditionalwomen’sjobsaspublicschoolteaching,nursing,andsecretarialwork.Butsomewomenbegantoentertraditionallymaleoccupations:policework,banking,dentistry,andconstructionwork.Womenwereaskingforequalwork,andequalopportunitiesforpromotion.
Todaytheexpertsgenerallyagreethatimportantchangesaretakingplaceintherolesofmenandwomen.Naturally,therearedifficultiesinadjustingtothesetransformations.
1.WhichofthefollowingbestexpressthemainideaofParagraph1?
A.Womenusuallyworkedoutsidethehomeforwages.
B.Menandwomen’sroleswereeasilyexchangedinthepast.
C.Men’srolesathomeweremorefirmlyfixedthanwomen’s.
D.Menandwomen’sroleswereusuallyquiteseparatedinthepast.
2.WhichsentencebestexpressesthemainideaofParagraph2?
A.Thefirstsentence.
B.Thesecondandthethirdsentences.
C.Thefourthsentence.
D.Thelastsentence.
3.Inthepassagetheauthorproposesthatthecounterculture___.
A.destroyedtheUnitedStates.
B.transformedsomeAmericanvalues.
C.wasnotimportantintheUnitedStates.
D.broughtpeoplemoreleisuretimewiththeirfamilies.
4.Itcouldbeinferredfromthepassagethat___.
A.menandwomenwillneversharethesamegoals.
B.somemenwillbewillingtoexchangetheirtraditionalmaleroles.
C.mostmenwillbehappytosharesomeofthehouseholdresponsibilitieswiththeirwives.
D.moreAmericanhouseholdsareheadedbywomenthaneverbefore.
5.Thebesttitleforthepassagemaybe___.
A.ResultsofFeministMovements
B.NewinfluenceinAmericanLife
C.CountercultureandItsconsequence
D.TraditionalDivisionofMaleandFemaleRoles.
答案：
DCBCB
解析：
暂无解析
1、【题目】Whatdoesthefutureholdfortheproblemofhousing?Agooddealdepends,ofcourse,onthemeaningof“future”.Ifoneisthinkingintermsofsciencefictionandthespaceage,itisatleastpossibletoassumethatmanwillhavesolvedsuchtrivialandearthlyproblemsashousing.Writersofsciencefiction,fromH.G.Wellsonwards,havehadlittletosayonthesubject.Theyhaveconveyedthesuggestionthatmenwillliveingreatcomfort,witheveryconceivableapparatustomakelifesmooth,healthyandeasy,ifnothappy.Buttheyhavenotsaidwhathishousewillbemadeof.Perhapssomenewbuildingmaterial,asyetunimagined,willhavebeendiscoveredorinventedatleast.Onemaybecertainthatbricksandmortar(泥灰，灰浆)willlonghavegoneoutoffashion.
Buttheproblemsofthenextgenerationortwocanmorereadilybeimagined.Scientistshavealreadypointedoutthatunlesssomethingisdoneeithertorestricttheworld’srapidgrowthinpopulationortodiscoveranddevelopnewsourcesoffood(orboth),millionsofpeoplewillbedyingofstarvationoratthebestsufferingfromunderfeedingbeforethiscenturyisout.Butnobodyhasyetworkedoutanyplanforhousingthesegrowingpopulations.Admittedlytheworstsituationswilloccurinthehottestpartsoftheworld,wherehousingcanbelightstructureorinbackwardareaswherestandardsaretraditionallylow.Buteventheminimumshelterrequiresmaterialsofsomekindandintheteeming,bulgingtownsthelow-standard“housing”offlattenedpetrolcansanddirtycanvasisfarmorewastefulofgroundspacethancanbetolerated.
Sincethewar,HongKonghassufferedthekindofcrisiswhichislikelytoariseinmanyotherplacesduringthenextgeneration.Literallymillionsofrefugeesarrivedtoswellthealreadygrowingpopulationandemergencystepshadtobetakenrapidlytopreventsqualor(肮脏)anddiseaseandthespreadcrime.Thecityistacklingthesituationenergeticallyandenormousblocksoftenements(贫民住宅)arerisingatanastonishingaped.ButHongKongisonlyonesmallpartofwhatwillcertainlybecomeavastproblemandnotmerelyahousingproblem,becausewhenpopulationgrowsatthisratethereareaccompanyingproblemsofeducation,transport,hospitalservices,drainage,watersupplyandsoon.NoteveryareamaygivethesameresourcesasHongKongtodrawuponandthesearchforquickerandcheapermethodsofconstructionmustnevercease.
1.Whatistheauthor’sopinionofhousingproblemsinthefirstparagraph?
A.Theymaybecompletelysolvedatsometimeinthefuture.
B.Theyareunimportantandeasilydealtwith.
C.Theywillnotbesolveduntilanewbuildingmaterialhasbeendiscovered.
D.Theyhavebeendealtwithinspecificdetailinbooksdescribingthefuture.
2.Thewriterissurethatinthedistantfuture___.
A.bricksandmortarwillbereplacedbysomeotherbuildingmaterial.
B.anewbuildingmaterialwillhavebeeninvented.
C.bricksandmortarwillnotbeusedbypeoplewhowanttheirhousetobefashionable.
D.anewwayofusingbricksandmortarwillhavebeendiscovered.
3.Thewriterbelievesthatthebiggestproblemlikelytoconfronttheworldbeforetheendofthecentury___.
A.isdifficulttoforesee.
B.willbehowtofeedtheevergrowingpopulation.
C.willbehowtoprovideenoughhousesinthehottestpartsoftheworld.
D.isthequestionoffindingenoughgroundspace.
4.Whenthewritersaysthattheworstsituationswilloccurinthehottestpartsoftheworldorinbackwardareas,heisreferringtothefactthatintheseparts___.
A.standardsofbuildingarelow.
B.onlyminimumshelterwillbepossible.
C.thereisnotenoughgroundspace.
D.thepopulationgrowthwillbethegreatest.
5.WhichofthefollowingsentencesbestsummarizesParagraph3?
A.HongKonghasfacedaseriouscrisiscausedbymillionsofrefugees.
B.HongKonghassuccessfullydealtwiththeemergencycausedbymillionsofrefugees.
C.HongKong’scrisiswasnotonlyamatterofhousingbutincludedanumberofotherproblemsofpopulationgrowth.
D.ManypartsoftheworldmayhavetofacethekindofproblemsencounteredbyHongKongandmayfinditmuchhardertodealwiththem.
答案：
AABDD
解析：
暂无解析
1、【题目】PartIVTranslation
Thecaptainrealizedthatthementriedtodeceivehimsohemadethemworkveryhardfortherestofthevoyage.(PassageOne)
答案：
船长意识到这些船员是要欺骗他，因此，在余下的航程里他让他们干更累的活。
解析：
暂无解析
1、【题目】Passage4
Questions16to20arebasedonthefollowingpassage:
Thenewglobalsatellitecommunicationssystemswillofferthreekindsservice,whichmayoverlapinmanydifferentkindsofreceivers.
VOICE.SatellitetelephoneswillbeabletomakecallsfromanywhereontheEarthtoanywhereelse.Thatcouldmakethemespeciallyusefultoremote,thirdworldvillages(someofwhichalreadyusestationarysatellitetelephones),explorersanddisaster-reliefteams.Today’smobiletelephonesdependonearth-boundtransmitters,wheretechnicalstandardsvaryfromcountrytocountry.Sobusinesstravelerscannotusetheirmobilephonesoninternationaltrips.Satellitetelephoneswouldmakethatpossible.
MESSAGING.Satellitemassagershavethesameglobalcoverageassatellitetelephones,butcarrytextalone,whichcouldbeusefulforthosewithlaptopcomputers.Equippedwithasmallscreenliketoday’spapers,satellitemassagerswillalsoreceiveshortmessages.
TRACKING.Voiceandmessagingsystemswillalsotelltheiruserswheretheyaretowithinafewhundredmeters.Combinedwiththemessagingservice,thelocationservicecouldhelprescueteamstofindstrandedadventurers,thepolicetofindstolencars,exporterstofollowtheprogressofcargoes,andhaulagecompaniestocheckthatdriversarenotdetouringthepub.America’smilitaryGlobalPositioningSystem(GPS)satellitewillprovidebetterpositioninginformationtoanyonewhohasareceiverfortheirsignals,butGPSdoesnotcarrymessages,sosuchareceivercannotbeusedonitsownfortrackingorrescue.Bythemid-1990s,GPSreceiverswillbeabletotellpeoplewheretheyaretowithin70metersanywhereintheworld,andtowithinameterorsoinareaswheretheserviceissupplementedbyground-basedtransmitter.
16.Globalsatellitecommunicationssystemswillbeusefulto.
A.laptopcomputerusers
B.remotevillages
C.disaster-reliefteams
D.allabove
17.Satellitetelephonewillmake.
A.businesstravelersusemobilephonesoninternationaltrips
B.possiblecallsfromanywhereonearthtoanywhereelse
C.explorershappy
D.allabove
18.Whichofthefollowingistrue?
A.ThepositioningprecisionofthevoicesystemisbetterthanthatofGPS.
B.ThepositioningprecisionofGPSisBetterthanthatofthevoicesystem.
C.ThepositioningprecisionofthemessagingsystemisbetterthanofGPS.
D.Thepositioningprecisionofvoicesystemisbetterthanthatofthemessagingsystem.
19.Whatcanwesayaboutthenewglobalsatellitecommunicationssystems?
A.Theyarewidelyused.
B.Theyareveryhelpful.
C.Theyarecostly.
D.BothAandB.
20.Whichofthefollowingmaybethebesttitleforthepassage?
A.GlobalSatelliteCommunications
B.NewVoiceandMessagingSystem
C.NewGenerationSatellite
D.AlwaysinTouch
答案：
CDCDB
解析：
暂无解析
1、【题目】Recentresearchhasclaimedthatanexcessofpositiveionsintheaircanhaveanilleffectonpeople’sphysicalorpsychologicalhealth.Whatarepositiveions?Well,theairisfullofions,electricallychargedparticles,andgenerallythereisaroughbalancebetweenthepositiveandthenegativecharged.Butsometimesthisbalancebecomesdisturbedandalargerproportionofpositiveionsarefound.Thishappensnaturallybeforethunderstorm,earthquakeswhenwindssuchastheMistral,HamsinorSharavareblowingincertaincountries.Oritcanbecausedbyabuild-upofstaticelectricityindoorsfromcarpetsorclothingmadeofman-madefibres,orfromTVsets,duplicatorsorcomputerdisplayscreens.
Whenalargenumberofpositiveionsarepresentintheairmanypeopleexperienceunpleasanteffectssuchasheadaches,fatigue,irritability,andsomesensitivepeoplesuffernauseaorevenmentaldisturbance.Animalsarealsoaffected,particularlybeforeearthquakes,snakeshavebeenobservedtocomeoutofhibernation,ratstofleefromtheirburrows,dogshowlandcatsjumpaboutunaccountably.ThishasledtheUSGeographicalSurveytofundanetworkofvolunteerstowatchanimalsinanefforttoforeseesuchdisastersbeforetheyhitvulnerableareassuchasCalifornia.
Conversely,whenlargenumbersofnegativeionsarepresent,thenpeoplehaveafeelingofwell-being.Naturalconditionsthatproducetheselargeamountsarenearthesea,closetowaterfallsorfountains,orinanyplacewherewaterissprayed,orformsaspray.Thisprobablyaccountsforthebeneficialeffectofaholidaybythesea,orinthemountainswithtumblingstreamsorwaterfalls.
Toincreasethesupplyofnegativeionsindoors,somescientistsrecommendtheuseofionisers:smallportablemachines,whichgeneratenegativeions.Theyclaimthationisersnotonlycleanandrefreshtheairbutalsoimprovethehealthofpeoplesensitivetoexcesspositiveions.Ofcourse,therearethedetractors,otherscientists,whodismisssuchclaimsandareskepticalaboutnegative/positiveionresearch.Thereforepeoplecanonlymakeuptheirownmindsbyobservingtheeffectsonthemselves,oronothers,ofanegativerichorpoorenvironment.Afterallitisdebatablewhetherdependingonseismicreadingstoanticipateearthquakesismoreeffectivethanwatchingthecat.
1.Whateffectdoesexceedingpositiveionizationhaveonsomepeople?
A.Theythinktheyareinsane.
B.Theyfeelratherbad-temperedandshort-fussed.
C.Theybecomeviolentlysick.
D.Theyaretootiredtodoanything.
2.Inaccordancewiththepassage,staticelectricitycanbecausedby___.
A.usinghome-madeelectricalgoods.
B.wearingclothesmadeofnaturalmaterials.
C.walkingonartificialfloorcoverings.
D.copyingTVprogramsonacomputer.
3.Ahighnegativeioncountislikelytobefound___.
A.nearapoundwithawaterpump.
B.closetoaslow-flowingriver.
C.highinsomebarrenmountains.
D.byarotatingwatersprinkler.
4.Whatkindofmachinecangeneratenegativeionsindoors?
A.Ionisers.
B.Air-conditioners.
C.Exhaust-fans
D.Vacuumpumps.
5.Somescientistsbelievethat___.
A.watchinganimalstoanticipateearthquakesismoreeffectivethandependingonseismography.
B.theunusualbehaviorofanimalscannotbetrusted.
C.neitherwatchingnorusingseismographsisreliable.
D.earthquake
答案：
BCDAA
解析：
暂无解析
1、【题目】PartIVTranslation
Bymakingvehicleslighterinweightaluminumhasgreatlyreducedtheamountoffuelneededtomovethem,(PassageTwo)
答案：
由于能够减轻运输工具本身的重量，铝材能大大地减少驱动它们本身所需的燃料。
解析：
暂无解析
1、【题目】Passage2
Questions6to10arebasedonthefollowingpassage:
Whenaluminumwasfirstproducedaboutahundredandfiftyyearsago,itwassodifficulttoseparateformtheoresinwhichitwasfoundthatitspricewashigherthanthatofgold.Thepriceremainedhighuntilanewprocesswasdiscoveredforrefiningthemetalwiththeaidofelectricityapproximatelythreequartersofacenturylater.Thenewmethodwassomuchcheaperthataluminumbecausepracticalformanypurposes,oneofwhichwasmakingpotsandpans.
Aluminumislightweight,rustproofandeasilyshapedintodifferentforms.Bymixingitwithothermetals,scientistshavebeenabletoproduceavarietyofalloys,someofwhichhavethestrengthofsteelbutweighonlyonethirdasmuch.
Today,theusesofaluminumareinnumerable.Perhapsitsmostimportantuseisintransportation.Aluminumisfoundintheengineofautomobiles,inthehullsofboats.Itisalsousedinmanypartsofairplanes.Infact,thehuge“airbus”planeswouldprobablyneverhavebeenproducedifaluminumdidnotexist.Bymakingvehicleslighterinweightaluminumhasgreatlyreducedtheamountoffuelneededtomovethem,Aluminumisalsobeingusedextensivelyinthebuildingindustryinsomecountries.
Sincealuminumissuchaversatile(多用的)metal,itisfortunatethatbauxite(铝土矿),whichisoneofitschiefsources,isalsooneoftheearth’smostplentifulsubstances.Asthesourceofaluminumisalmostinexhaustible,wecanexpectthatmoreandmoreuseswillbefoundforthisversatilemetal.
6.Thepriceofaluminumwassharplyreducedwhenpeoplediscoveredanewrefiningprocesswiththeaidof.
A.windB.solarenergyC.hydraulicpowerD.electricity
7.Aluminumis.
A.lightweight,rustproofbutnoteasilyshapedintodifferentforms
B.heavyweight,rustproofandeasilyshapedintodifferentforms
C.lightweight,rustproofandeasilyshapedintodifferentforms
D.lightweightandeasilyshapedintodifferentformsbutitiseasytobecomerusty
8.WhichofthefollowingisNOTtrue?
A.Aluminumiswidelyusedintransportation.
B.Aluminumisalsousedinmanypartsofairplanes.
C.Aluminumisbeingusedextensivelyinthebuildingindustry.
D.Aluminumisnotusedinitspureform.
9.Aluminumisfoundonearthmostlyintheformof.
A.puremetalB.bauxiteC.goldD.liquid
10.Whatisthepassagetalkingabout?
A.Thefeaturesofaluminumanditsfunctions.B.Theprocessofaluminum.
C.Thediscoveryofaluminum.D.Thepromisingfutureofaluminum.
答案：
DCDBA
解析：
暂无解析
邮箱： 