2021-2022年遼寧省大連市大學英語6級大學英語六級真題一卷(含答案)

2021-2022年遼寧省大連市大學英語6級大學英語六級真題一卷(含答案)學校:________班級:________姓名:________考號:________

一、2.ReadingComprehension(SkimmingandScanning)(20題)1.

Thegovernments'policestoattractnewresidentsandslowdepopulationprocessmightbecomefutileonce______.

2.

Inallcoastalcities,cellphonenetworkscouldnotkeepupwithdemand.

A.YB.NC.NG

3.

Havingkids,ondadmustberich,buttheother______

4.AreWeTurningintoaNationofLoners?

Marriageisdown,andsoischildbirth.Butdivorceisup,alongwithsingle-personliving.ThisisBritaintoday.

AperiodofunprecedentedchangeinBritishfamilylife,whereadultsleadmoreisolatedlives,bringingupchildrenontheirownornothavingthematall,isdescribedinareporttoday.TheindependentFamilyPolicyStudiesCentrepaintsapictureofanevolvingsocietywithfewerchildren,fewermarriages,moredivorcesandmoresololiving,where"marriageandpartnershipsaremuchmorefragilethantheywere".

Althoughthegovernmenthasgonefurtherthananyotherindevelopingexplicitpoliciesforparentingandmarriage,ministersshouldbecome"moreintunewithcontemporaryfamilylife",itsays.Theyneedtoconsidertheeffectofthesechanges,thereportsays,notjustonchildrenaffectedbythebreakdownofadultrelationships,butonsocietyasawholeand"rightacrossthelifecycle".

Thereportsaysitisstilltooearlytotalkofthedeathofthe"traditionalfamily",becausefour-fifthsofdependentchildrenstillliveinafamilywithtwoparents,andnineintenofthoseparentsaremarried.Butotherstatisticsincludedinthereportdemonstratesignificantchangesinfamilydemographics(人口統(tǒng)計)withprofound,oftenunexplored,consequences.

Morethan6.5millionpeopleinBritain—about28%ofhouseholds—nowliveontheirown,threetimesasmanyas40yearsago,thereportsays.Nearlyaquarterofwomenbornin1973willstillbechildlessattheageof45,comparedwithaboutoneintenofthosebornin1943.Womenarehavingchildrenlater,onaverageat29ratherthanat26,asinthe1970s,andtheyarehavingfeweroffspring.Theaverageof1.73childrenperwomaninthelate1990s,thoughhigherthaninmostEUcountries,iswellbelowthe2.1neededtoretainthepopulationatitspresentlevelinthelongterm.

Loneparentstrebled

The21%ofdependentchildrenlivinginloneparenthouseholds(thevastmajoritywiththeirmother)hastrebled(三倍)fromthe7%in1972.Thenumberofloneparentshastrebledinthepast25years—therewereabout1.6millionsuchparentsand2.8milliondependentchildrenbythemid1990s,comparedwithjustover500000loneparentsand1milliondependentchildrenin1971.Withinthat1.6million,thefastestgrowinggroupissingle,never-marriedlonemothers.Theirproportion,42%in1997,isnearlydoubletheproportionof24%for1984.

"Twentyyearsagosuchwomenwouldhavemarriedonlytoseetheirrelationshipendinseparationordivorce,"thereportsays."Singlelonemothersshouldbeseenasthemodernequivalentofteenagersinearliergenerationswhoseshotgunmarriages(為懷孕所迫的結婚)failed."

Theannualmarriagerateisatitslowestlevelsincerecordsbegan160yearsago.In1961approximately330000first-timemarriagesand50000remarriagestookplace.By1997thesefigureshaddroppedtofewerthan200000first-timemarriagesandapproximately120000remarriages.Ofeveryfivemarriages,twowillendindivorce.Morethan150000childrenunder16experiencethedivorceoftheirparents,andifpresentratescontinue,28%ofchildrenunder16willexperiencedivorce.Thecostoffamilybreakdowntothepublicpursehasbeenestimatedatabout5billionayear.

Butmarriageisstillmorestablethancohabiting,withcoupleswholivetogetherunmarriedthreeorfourtimesmorelikelytosplitup.Futureresearchwillshowariseintheproportionofcohabitingcouples,fromtheoneinteninthemostrecentlyavailablefigures.Andthepresenceofchildreninacohabitingrelationshipdoesnotappeartoreducethebreakdownratesignificantly.AlthoughtheCentreitselfdevotessomespaceinitsreporttochildren,itsaysministersshouldbroadentheirscopeto

A.YB.NC.NG

5.

AtHighTechHigh,______arehiredtoteachcoursesonbiotechnologyorwebdesign.

6.

Trafficlightsarethemostcommontrafficcontroldevices.

A.YB.NC.NG

7.

Atsunamioccurswhenthereisashiftin______.

8.

TheStockExchangeprovidesthelargecompanieswithawaytoreachintothepocketsofthepublic.

A.YB.NC.NG

9.

Arecipeisnotconsideredtangibleitemif______.

A.itisdeliveredlaterthanthecontractedtime

B.itneverarrivesatyourplace

C.itisdeliveredtothebuyerthroughe-mail

D.itcostslessthanthemarketprice

10.

ThebookSilentSpringhaschangedourthinkingbyprovidinguswithanentirelynewanddifferentwayof______.

11.WorldPopulationGrowthandDistribution

TheUnitedNations,anacceptedauthorityonpopulationlevelsandtrends,estimatesthattheworldpopulationreached6billionin1999,andisincreasingannuallybymorethan77millionpersons.Therateofincrease,1.3percentperyear,hasfallenbelowthepeakrateof2percentperyearattainedby1970.Bythelate2040s,theUNestimates,thegrowthratewillhavefallentoabout0.64percentannually,atwhichtimemorethan50countrieswillexperiencenegativegrowth.

A.PastandPresentGrowth

Estimatesofworldpopulationbefore1900arebasedonfragmentary(零散的)data,butscholarsagreethat,formostofhumanexistence,long-runaveragepopulationgrowthapproachedapproximately0.002percentperyear,or20permillioninhabitants.AccordingtoUNestimates,thepopulationoftheworldwasabout300millionintheyearAD1,andittookmorethan1,500yearstoreachthe500millionmark.Growthwasnotsteadybutwasmarkedbyoscillations(擺動)dictatedbyclimate,foodsupply,disease,andwar.

Startinginthe17thcentury,greatadvancesinscientificknowledge,agriculture,industry,medicine,andsocialorganizationmadepossiblerapidaccelerationinpopulationgrowth.Machinesgraduallyreplacedhumanandanimallabor.Peopleslowlyacquiredtheknowledgeandmeanstocontroldisease.By1900theworldpopulationhadreached1.65billion,andby1960itstoodat3.04billion.

Beginningabout1950,anewphaseofpopulationgrowthwasusheredinwhenfamineanddiseasecouldbecontrolledeveninareasthathadnotyetattainedahighdegreeofliteracyoratechnologicallydevelopedindustrialsociety.Thishappenedasaresultofthemodestcostofimportingthevaccines(疫苗),antibiotics,insecticides,andhigh-yieldingvarietiesofseedsproducedsincethe1950s.Withimprovementsinwatersupplies,sewage-disposalfacilities,andtransportationnetworks,agriculturalyieldsincreased,anddeathsfrominfectiousandparasiticdiseasesgreatlydeclined.Lifeexpectancyatbirthinmostdevelopingcountriesincreasedfromabout35～40yearsin1950to66yearsby2000.Therapiddeclineindeathsamongpeoplewhomaintainedgenerallyhighfertilityratesledtoannualpopulationgrowththatexceeded3.1percentinmanydevelopingnationsa--ratethatdoublespopulationsizein23years.

B.RegionalDistribution

Asof2000,1.2billionpeoplelivedinthedevelopednationsoftheworld,and4.9billionpeoplelivedintheless-developedcountries.Byregion,overhalftheworld'spopulationwasinEastandSouthAsia;China,with1.3billioninhabitants,andIndia,withsome1billion,werethedominantcontributors.EuropeandthecountriesoftheformerUSSRcontained14percent,NorthandSouthAmericamadeup14percent,Africahad13percent,andthePacificIslandshadabout1percentofworldpopulation.

Differencesinregionalgrowthratesarealteringthesepercentagesovertime.Africa'sshareoftheworldpopulationisexpectedtomorethandoublebytheyear2025.ThepopulationofSouthAsiaandLatinAmericaisexpectedtoremainnearlyconstant;inotherregions,includingEastAsia,thepopulationisexpectedtodeclineappreciably.Theshareofthepresentdevelopednationsinworldpopulation--20percentin2000--isexpectedtofallto15percentby2025.Nineoutofeverytenpersonswhoarenowbeingaddedtotheworld'spopulationarelivingintheless-developedcountries.

C.UrbanConcentration

Asacountrydevelopsfromprimarilyanagriculturaltoanindustrialeconomy,large-scalemigrationofruralresidentstotownsandcitiestakesplace.Duringthisprocess,thegrowthrateofurbanareasistypicallydoublethepaceofoverallpopulationincrease.Some29percentoftheworldpopulationwaslivinginurbanareasin1950;

A.YB.NC.NG

12.

Theeconomyandjobmarketaresogoodthatmoregraduatesaredeterminedtofindthebestjob.

A.YB.NC.NG

13.

Anenhancedversionoftheservicewilluse______technologytogetthevideodatatoviewers.

14.

Scientistsuse______totestwhethertheirgeneticmodificationofaplantissuccessful.

15.

MostofAntarcticaappearstobeimmunetothebigmeltfornowbecauseit'slargelyinsulatedfromglobaltrendsandit'ssobigastogenerate______.

16.

Whenpeoplegossipaboutothers,theyusuallycomparethemselvestothegossipedones,andthinkthemselves______.

17.

Amosquitocangiveamessagetoanothermosquito150feetawayby_____.

18.

Wemustdevelopbetterdevicesformonitoringandcontrollingairtrafficbecause_____hasreachedacriticalstage.

19.

Thereasonwhyweshouldbeeatingmorefishisthat______.

20.

Vioxxshowednoconnectiontoheartproblemsinitsclinicaltrial.

A.YB.NC.NG

二、3.ListeningComprehension(20題)21.(17)

A.Thewomanlikesarguing,

B.Thewomanshouldgetajob.

C.Thewomanshouldworkinafactory.

D.Thewomanspendstoomuchmoney.

22.聽力原文：F:Mywatchstoppedagain.AndIjustgotanewbattery.

M:Whydon'tyoutakeittotheshoponcampus?Theycancheckitforyou.Andthey'reprettyreasonable.

Q:Whatdoesthemanmean?

(16)

A.Hesuggeststhewomantohaveherwatchrefunded.

B.Hesuggeststhewomantobuyanewbatteryintheshoponcampus.

C.Hebelievestheshoponcampussellswatchesatareasonableprice.

D.Hesuggeststhewomantohaveherwatchcheckedintheshop.

23.(35)

A.Thepercentageishigh.

B.Thepercentageislow.

C.Theamountofthepopulationisnotsolow.

D.Itisnotmentionedinthepassage.

24.聽力原文：M:Thevisitingeconomistisspeakingtonight,butDr.Johnsondoesn'tseemtothinkmuchofhim.

W:That'sbecauseDr.Johnsoncomesfromanentirelydifferentschoolofthought.

Q:Whatdowelearnfromthewoman'sremark?

(19)

A.Dr.Johnsonandtheguestspeakerwereschoolmates.

B.Dr.Johnsoninvitedtheeconomisttovisittheirschool.

C.Theguestlecturer'sopinionisdifferentfromDr.Johnson's.

D.TheeconomistandDr.Johnsoncomefromdifferentschools.Questions19to22arebasedontheconversationyouhavejustheard.

25.聽力原文：Asatradition,workersincompaniesarealwaysrequiredtowearsuitsandfie,butaccordingtoaseniorgovernmentofficial,Thailandistoaskworkerstostopwearingsuitsaspartofthecountry'slatestmeasuretoconserveenergy.Thisistheideaofthenewgovernment,becauseThailandisatropicalcountryandair-conditionershavebeenusedverycommonly,whichconsumealargeamountofenergy,butiftheworkersturnedupinshirtsleeves,theywouldn'tneedair-conditionersturnedupsohigh.Atitsweeklymeeting,thecabinetpassedaresolutionaskingallpublicservantsnottowearjacketsandurgingprivateemployeestodothesame.Thishasalreadybeenpractisedbythegovernment.Atarecentmeeting,onlyfourofsixair-conditionersinthecabinetroomhadbeenturnedon.Oneofthegovernmentofficialssays,"Initiallyitwasnothotintheroom,butifameetinglastsalongtime,thetemperaturemightneedtobeloweredabit."

(30)

A.NewFashioninThailand.

B.HowtoUseAir-conditionerwisely.

C.ANewWaytoSaveEnergy.

D.Air-conditionerinThailand.

26.(31)

A.Quietplants.

B.Well-wateredplants

C.Healthyplants.

D.Thirstyplants.

27.【B4】

28.(14)

A.He'ssurprisedshechosethatagency.

B.Hewonderswhyshe'skeptherjob.

C.Hedoesn'tknowwhenherclassesstarted.

D.Hedoubtsshemakesmuchmoneynow.

29.

【B5】

30.聽力原文：M:Prof.Kennedyhasbeenverybusythissemester.AsfarasIknow,heworksuntilmid-nighteveryday.

W:Iwouldn'thavetroubledhimsomuchifIhadknowhewassobusy.

Q:Whatdowelearnfromtheconversation?

(14)

A.Thewomanhastroublegettingalongwiththeprofessor.

B.Thewomanregretshavingtakenupmuchoftheprofessor'stime.

C.Thewomanknowstheprofessorhasbeenbusy.

D.Thewomanknowstheprofessorhasrunintotrouble.

31.聽力原文：WeknowthenthatintheUS,it'sthejobofCongresstoproposenewlaws,whichwecallbills,andperhapstomodifythesebillsandthenwriteonthem.ButevenifthebillispassedinCongress,itstilldoesn'tbecomealawuntilthePresidenthasachancetoreviewit,too.Andifit'snottothePresident'sliking,thebillcanbevetoedorkilledineitheroftwoways.Oneisbyavetomessage.ThePresidenthastendaystovetothebillbyreturningittoCongress,alongwiththemessageexplainingwhyit'sbeingrejected.ThiskeepsthebillfrombecomingalawunlessoverwhelmingmajoritiesofbothHousesofCongressvotetoover-rightthePresident'sveto.Sometimestheydothat.Often,lawmakerssimplyrevisethevetoedbillandpassitagain.Thistime,intheform.thePresidentislesslikelytoobjectto,andlesslikelytowanttoveto.TheotherwaythePresidentcankillabillisbypocketveto.Here'swhathappens.IfthePresidentdoesn'tsignthebillwithintendays,andCongressajournsduringthattime,thenthebillwillnotbecomelaw.NoticethatitisonlyattheendofanentiresessionofCongressthatthepocketvetocanbeused,notjustwheneverCongresstakesashorterbreak,say,forasummervacation.Afterapocketveto,thatparticularbillisdead.IfalawmakerinCongresswantstopushthematterintheirnextsession,they'llhavetostartalloverwithabrandnewversionofthebill.

(29)

A.HowthePresidentproposesnewlaws.

B.HowabillispassedbylawmakersinCongress.

C.HowthePresidentcanrejectaproposedlaw.

D.HowlawmakerscanforcethePresidenttosignabill.

32.(36)

A.Inthetwohundredmeterrace.

B.Intheonehundredmeterrace.

C.Inthetwohundredmetersprintrelayevent.

D.Intheonehundredmeterandthetwohundredmeterraces.

33.(29)

A.CanadahadnosealingrightsoffAlaska.

B.TheCanadianscouldhunttheseals.

C.TheUnitedStatescouldclaimtheseals.

D.TheUnitedStatescouldnothunttheseals.

34.(16)

A.Lilyhasfoundajobtoearnherliving.

B.Lily'sbrotherhassetagoodexampleforher.

C.Lily'sbrotherisdoingapart-timejobtosupporthimself.

D.Thefatherdidn'tknowhissongambledandwasinadebt.

35.【B10】

36.(21)

A.Lessthan6months.

B.2months.

C.6monthsormore.

D.1month.

37.

【B6】

38.(24)

A.EarlyAmericawasundemocratic.

B.TherehasneverbeendemocracyinAmerica.

C.EarlyleadersofAmericahadnodesirefordemocracy.

D.DemocracytooktimetodevelopinAmerica.

39.(44)

40.聽力原文：M:You'vebeenherethreeyears.Haveyouhadmuchofachancetotravel?

W:Notmuch.LastyearIplannedtogotoYellowStoneParkinDecember,butIhadtopostponethetrip.Thenafewmonthslater,Ifinallymadeitthere.

Q:WhendidthewomangotoYellowStonePark?

(19)

A.Threeyearsago.B.Thisyear.C.Lastyear.D.InDecember.

三、4.ReadingComprehension(ReadinginDepth)(20題)41.

Net-warinthe1990'stargets______.

A.destroyinginformationandcommunication

B.governments

C.militaryfacilities

D.meansofproduction

42.

ThepassageimpliesthattheaudiencesinShakespeareantimewere______.

A.easytobesatisfied

B.uncriticalbutcandid

C.criticalandcandid

D.criticalbutsilent

43.

TheArabsandtheJapanesedifferinthat_____.

A.theJapanesekeeptheirclosenesswithinlimitswhiletheArabsdon't

B.theArabsliketotouchtheircompanionsbuttheJapanesedon't

C.theArabsrequiremorespaceinprivacythantheJapanese

D.theJapanesedonotmindbeingalonewhiletheArabsdo

44.Amusselgripsahardsurfaceveryfirmlyto______.

A.sealitselffrombeingerodedbyseawater

B.producethewaterproofsuperglue

C.protectitselffrombeingblownawaybystrongwind

D.protectitselffrombeingthefoodofotheranimals

45.

ThewritercomparesLomasGarza'svisualworksto______.

A.customs

B.factsandfiction

C.storytelling

D.artistictrends

46.Interpersonalconflictintheworkplaceis______.

A.thebaneofallmanagers

B.theproverbialfreelunch

C.aneffectivemanagementtool

D.morecommontodaythaninthepast

47.

WhatisAmericans'favoritegame?

A.Baseball.B.Basketball.C.Professionalfootball.D.Soccer.

48.

Thevelocityofescapeisabout______.

A.40,200milesperminute

B.25,000kilometersperhour

C.40,200kilometersperhour

D.25,000milesperminute

49.

Thebesttitleforthetextmaybe______.

A.UseHumorEffectively

B.DifferentHumorStrategies

C.AddHumortoSpeech

D.VariousKindsofHumor

50.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

HereisastoryI'dliketoshare:

Abutcherwatchingoverhisshopisreallysurprisedwhenhesawadogcominginsidetheshop.Heshooshimaway.Butlater,thedogisbackagain.

So,hegoesovertothedogandnoticeshehasanoteinhismouth.Hetakesthenoteanditreeds"CanIhave12sausagesandalegoflamb,please?Thedoghasmoneyinhismouth,aswell."

Thebutcherlooksinsideandthereisatendollarnotethere.Sohetakesthemoneyandputsthesausagesandlambinabag,placingitinthedog'smouth.Thebutcherissoimpressed,andsinceit'saboutclosingtime,hedecidestoshutupshopandfollowthedog.

Sooffhegoes.Thedogiswalkingdownthestreetwhenhecomestoalevelcrossing.

Thedogputsclownthebag,jumpsupandpressesthebutton.Thenhewaitspatiently,baginmouth,forthelightstoturn.Theydo,andhewalksacrosstheroad,withthebutcherfollowinghimalltheway.

Thedogthencomestoabusstop,andstartslookingatthetimetable.

Thebutcherisinaweatthisstage.Thedogchecksoutthetimes,andthensitsononeoftheseatsprovided.Alongcomesabus.Thedogwalksaroundtothefront,looksatthenumber,andgoesbacktohisseat.

Anotherbuscomes.Againthedoggoesandlooksatthenumber,noticesit'stherightbus,andclimbson.Thebutcher,bynow,open-mouthed,followshimontothebus.

Thebustravelsthroughthetownandoutintothesuburbs,thedoglookingatthescenery.Eventuallyhegetsup,andmovestothefrontofthebus.Hestandsontwobackpawsandpushesthebuttontostopthebus.Thenhegetsoff,hisgroceriesstillinhismouth.

Well,dogandbutcherarewalkingalongtheroad,andthenthedogturnsintoahouse.Hewalksupthepath,anddropsthegroceriesonthestep.

Thenhewalksbackdownthepath,takesabigrun,andthrowshimselfagainstthedoor.Hegoesbackdownthepath,runsuptothedoorandagain,itthrowshimselfagainstit.There'snoansweratthehouse,sothedoggoesbackdownthepath,jumpsuponanarrowwall,andwalksalongtheperimeter(四周)ofthegarden.Hegetstothewindow,andbeatshisheadagainstitseveraltimes,walksback,jumpsoff,andwaitsatthedoor.

Thebutcherwatchesasabigguyopensthedoor,andstartsabusingthedog,kickinghimandpunchinghim,andswearing(辱罵)athim.

Thebutcherrunsup,andstopstheguy."Whatinheaven'snameareyoudoing?Thedogisagenius.HecouldbeonTV!"Buttheguyresponds:"Youcallthisclever?Thisisthesecondtimethisweekthatthisstupiddog'sforgottenhiskey."

Thestoryends.Andyes!Peoplewillneverbesatisfiedwithwhatthey'vegot.

Whenitcomestotheworkplace,employersdonotknowhowtoappreciatetheirpeoplewhohaveservedthemloyallythroughtheyears.I'veseencompanieslosegoodpeopleforthesimplefactthattheirleadersfailedtoshowappreciation.Employerswithbigegosenjoythefactthattheyhavemorepowerandauthoritythanothers.Theyshow,inthewaytheygiveordersanddirections,thattheythinktheyaresuperior.Theygetakickoutofdisplayingthissuperiority.Peoplewhodothisarefools,andeveryonebutthemselvesknowsit.Theyareneversatisfiedbecausetheycouldnotbesatisfiedeveniftheirpeopleperform.well.

Theydon'tlistentotheopinionandideasoftheirsubordinates(下屬).

Why!Allbecauseoftheirstupidprideandinsecurity!

Peopleofthiskindwillneverbesatisfied.Why?Bec

51.

【C9】

52.Accordingtothepassage,whetherpurchasingoroperatingaHummer,consumersfoundithardto______.

53.

Itcanbeinferredfromthelastparagraphthat______.

A.Dr.Chiuwillberememberedforhisspecialcontribution

B.thetrackingofalldocumentsmightresultincontroversies

C.AmericanSecretServiceisheavilyfinancingDr.Chiu'sresearch

D.printermanufacturersarereluctanttoimplementdeliberatebanding

54.SectionA

Directions:Inthissection,thereisashortpassagewith5questionsorincompletestatements.Readthepassagecarefully.Thenanswerthequestionsorcompletethestatementsinthefewestpossiblewords.

MorethantwomillionpeopleinEuropenowhavefibrebroadbanddirecttotheirhome,suggestsasurvey.

Thelatestfiguresonsuperfastbroadbanddeliveredbyfibretothehome(FTITI)shows18%growthoverthelastsurveycompiledinlate2008.Thecontinuedgrowthsuggeststhattheglobaleconomicdownturnhasnothitplanstobuildinfrastructure(基礎設施)offibre.Swedentopsthelistofnationsrollingoutthetechnology,with10.9%ofitsbroadbandcustomersusingfibre.

KarelHelsen,presidentofEurope'sFibre-To-The-HomeCouncil,saidthegrowthmatchedpredictionsthatwererevisedwhenthecreditcrunch(信用緊縮)startedtomakeitselffelt."Thenumbersin2009areinlinewiththelatestforecasts,"saidMr.Helsen.

By2012,theFITHCouncilexpectsthat13millionpeopleacross35Europeannationswillhavetheirbroadbanddeliveredbyfibre.Suchserviceswouldstartatspeedsof100megabitspersecond(mbps),saidMr.Helsen.

AroundEuropemorethan233projectswereunderwaytolaythefibresthatwouldconnecthomesorbuildingstothenet,saidMr.Helsen.Manyofthose,hesaid,werebeingoperatedbylocalgovernmentsorsmallernetfirms.LocalgovernmentswereinterestedinFTFHbecauseoftheeconomicandsocialbenefitsitbroughtinitswake.Thelowdelayinherentinhigh-speedfibrenetworksmadepossiblenovelusesofbroadband,hesaid.

"Nodelayisveryimportant,"hesaid,"specificallyifyoutalkaboutapplicationsthataretimedependentsuchaspersonalcommunications,conferencecallsorvideocallswheredelayscausealotofinterference."

WhileearlyPITHserviceswereconcentratedincities,saidMr.Helsen,manymorewerereachingouttoruralareasfore-healthande-learningprojects.

SeparatestudiesshowthatanFTI'Hinfrastructurecanhaveadirectimpactonlocaleconomicoutput,saidMr.Helsen.

TheUK,FranceandGermanyhaveyettobreakintothelistoftoptenPITHnations.

Duringtheglobaleconomicdownturn,thenumberofEuropeanswhousefibrebroadband______.

55.ScientistshavelongbelievedonewaytostoptheEarth'satmospherefromwarmingisbyplantingmoretrees.Theideaisthatmoretreeswilltakeinorabsorbsomeofthecarbondioxideintheatmosphere.Carbondioxideisagasreleasedbycars,factoriesandotherhumanactivities.ThegastrapsheatintheEarth'satmosphere,whichwarmstheplanet.However,twonewstudieshavefoundthattreesmaynotbeashelpfulinreducingcarbondioxideashadbeenthought.

ThefirststudywasdoneatDukeUniversityinDurham,NorthCarolina.Researcherspumpedextracarbondioxideintoatestareawherepinetreesweregrowing.Thetreesgrewthirty-fourpercentfasterduringthefirstthreeyears.However,intime,thetreesslowedtoabouttheirnormalgrowthrate.Thescientistssaythisisbecausetreesneedothernutrients,suchasnitrogen.

Inthesecondstudy,researchersfromDukeandBowdoinCollegeinBrunswick,Maineexaminedthesoilaroundtrees.Theydiscoveredthatastheleavesbrokedownintothesoil,allthecarbonwasnottrappedinthesoil.Muchofitwasreleasedintotheatmosphereascarbondioxide.

ThefindingsofthetwostudieswerepublishedlastmonthinNaturemagazine.Theysuggestthereislimitedvalueinplantingtreestoreducethecarbondioxidepollutionintheatmosphere.

Forestplantinghasbeenapartofnegotiationsonaworldagreementtoreducegreenhousegasesthatscientistsbelievecauseglobalwarming.TheUnitedStates,Canada,Japanandsomeotherindustrialcountrieshavesupportedtheidea.Butthisnewresearchsuggeststheideaisnotaseffectiveasenvironmentalactivistshadthought.ScientistRamOrenofDukeUniversityledthestudyontreegrowth.Hesaysthatearlierestimatesontheabilityofforeststoabsorbcarbondioxidewereoverlyhopeful.

Somescientistsnotinvolvedinthestudiessaytheresearchprovidessomeofthefirstevidenceonhowtreesreacttocarbondioxide.Otherscientistssaytheresearchdisputesabeliefamongsomecoalandpowercompanies.Thecompaniessaythatrisinglevelsofcarbondioxideintheatmospherewillnotcreateharmfulglobalwarming.Instead,theysayitwillincreaseforestsandotherplants.

Whatisthepurposeofthispassage?

A.Introducesomenewideasabouttherelationshipbetweentreesandcarbondioxide.

B.Introducerecentconditionofglobalindustrialpollution.

C.Callonpeopletoplantmoretreestoreducegreenhousegases.

D.Pointoutthatpowercompaniesshouldberesponsiblefortherisinglevelsofcarbondioxide.

56.

WiththeinvasionoftheAustralianpound,red-feathercurrencyhas______.

A.maintaineditsvalue

B.foundincreasedusage

C.fallenintodisuse

D.declinedinvalue

57.

Pilesofdungcan'tberelieduponwhenitcomestoestimatingelephantnumbersbecause______.

A.theyaredifferentinsize.

B.theyscatterallovertheregion.

C.theyarediff