公共英语五级考前强化试题(五)Word文件下载.docx

公共英语五级考前强化试题(五)Word文件下载.docx

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progress,cansignificantlyaidinachievingaharmoniousinterplaybetweenschooland

　　home.Toillustrate,supposethatafatherhasbeendrillingJuniorinarithmeticprocessesnightafter

　　night.Inafriendlyinterview,theteachercanhelptheparentsublimatehisnaturalpaternalinterestintoproductive

　　channels.HemightbepersuadedtoletJuniorparticipateindiscussingthefamilybudget,buyingthefood,usingayardstickormeasuringcupathome,settingtheclock,calculatingmileageonatrip,andengaginginscoresofotheractivitiesthathaveamathematical

　　basis.Ifthefatherfollowstheadvice,itisreasonabletoassumethathewillsoonrealizehissonismakingsatisfactoryprogressinmathematicsand,atthesametime,enjoyingthe

　　work.Toooften,however,teachers'

conferenceswithparentsaredevotedtopettyaccountsofchildren'

smisdemenanors,complaintsaboutlazinessandpoorworkhabits,andsuggestionsforpenaltiesandrewardsat

　　home.Whatisneededinamorecreativeapproachinwhichtheteacher,asaprofessionaladviser,plantsideasinparents'

mindsforthebestutilizationofmanyhoursthatthechildspendsoutofthe

　　classroom.Inthisway,theschoolandthehomejoinforcesinfosteringthefullestdevelopmentofyoungsters'

　　capacities.Whatisthecentralideaofthepassage?

　　AHometrainingismoreimportantthanschool

　　training.

　　BTeacherscanandshouldhelpparentstounderstandandfurthertheobjectivesofthe

　　school.CThemathematicsprogramcanbeimplementedathomeinmany

　　ways.DParentshavearesponsibilitytohelpstudentstodotheir

　　homework.

　　【正确答案】：

B

　　【本题分数】：

1.0分第2题Theauthordirectlydiscussesthefactthat______.AparentsdrilltheirchildrentoomuchinarithmeticBafathercanhavehissonhelphimconstructarticlesathomeCaparent'

smisguidedeffortscanberedirectedtoproperchannelsDthereisnosufficientindividualinstructionintheclassroom

C

1.0分第3题Itcanbereasonablyinferredthattheauthor______.AissatisfiedwithpresentrelationshipsbetweenhomeandschoolBfeelsthatthetraditionalprogramisslightlysuperiortothedevelopmentalprogramCbelievesthatschoolsarelackinginguidancepersonnelDfeelsthatparent-teacherinterviewscanbemademuchmoreconstructivethantheyareathome

D

1.0分第4题Amethodofparent-teachercommunicationNOTmentionedorreferredtobytheauthoris______.Aclassesforparents

　　BnewprogressreportformsCparent-teacherinterviewsDdemonstrationlesson

1.0分第5题Fromthepassagewecaninferthattheauthorisa（n）______.AprofessorofeducationBelementaryschoolteacherCparentDstudent

A

1.0分第6题ThemoleculesofcarbondioxideintheEarth'

satmosphereaffecttheheatbalanceoftheEarthbyactingasaone-way

　　screen.Althoughthesemoleculesallowradiationatvisiblewavelengths,wheremostoftheenergyofsunlightisconcentrated,topassthrough,theyabsorbsomeofthelonger-wavelength,infraredemissionsradiatedfromtheEarth'

ssurface,radiationthatwouldotherwisebetransmittedbackinto

　　space.FortheEarthtomaintainaconstantaveragetemperature,suchemissionsfromtheplanetmustbalanceincomingsolar

　　radiation.Iftherewerenocarbondioxideintheatmosphere,heatwouldescapefromtheEarthmuchmore

　　easily.Thesurfacetemperaturewouldbesomuchlowerthattheoceansmightbeasolidmassof

　　ice.Today,however,thepotentialproblemistoomuchcarbon

　　dioxide.Theburningoffossilfuelsandthecleaningofforestshaveincreasedatmosphericcarbondioxidebyabout15percentinthelasthundredyearsandwecontinuetoaddcarbondioxidetothe

　　atmosphere.Couldtheincreaseincarbondioxidecauseaglobalriseinaveragetemperature,andcouldsucharisehaveseriousconsequencesforhumansociety?

　　Mathematicalmodelsthatallowustocalculatetheriseintemperatureasafunctionoftheincreaseindicatethattheanswerisprobably"

yes"

.Underpresentconditionsatemperatureof-8℃canbeobservedatanaltitudeof5to6kilometersabovethe

　　Earth.Belowthisaltitude（calledtheradiatinglevel）,thetemperatureincreasesbyabout6℃per

　　kilometerapproachingtheEarth'

ssurface,wheretheaveragetemperatureisabout15℃.Anincreaseintheamountofcarbondioxidemeansthattherearemoremoleculesofcarbondioxidetoabsorbinfrared

　　radiation.Asthecapacityoftheatmospheretoabsorbinfraredradiationincrease,theradiatinglevelandthetemperatureofthesurfacemust

　　rise.Onemathematicalmodelpredictsthatdoublingtheatmospherecarbondioxidewouldraisetheglobalmeansurfacetemperatureby2.5℃.Thismodelassumesthattheatmosphere'

srelativehumidityremainsconstantandthetemperaturedecreaseswithaltitudeatarateof6.5℃per

　　kilometer.Theassumptionofconstantrelativehumidityisimportant,becausewatervaporintheatmosphereisanotherefficientabsorberofradiationatinfrared

　　wavelengths.Becausewarmaircanholdmoremoisturethancoolair,therelativehumiditywillbeconstantonlyiftheamountofwatervaporintheatmosphereincreasesasthetemperature

　　rises.Therefore,moreinfraredradiationwouldbeabsorbedandreradiatedbacktotheEarth'

s

　　surface.Theresultantwarmingatthesurfacecouldbeexpectedtomeltsnowandice,reducingtheEarth'

　　reflectivity.Moresolarradiationwouldthenbeabsorbed,leadingtoafurtherincreasein

　　temperature.Accordingtothepassage,thegreatestpartofthesolarenergythatreachestheEarthis______.AconcentratedatvisiblewavelengthsBabsorbedbycarbondioxidemoleculesCabsorbedbyatmosphericwatervaporDreflectedbacktospacebysnowandice

1.0分第7题Accordingtothepassage,atmosphericcarbondioxideperformsallofthefollowingfunctionsEXCEPT______.AabsorbingradiationatvisiblewavelengthsBabsorbinginfraredradiationCabsorbingoutgoingradiationfromtheEarthDhelpingtoretainheatneartheEarth'

ssurface

1.0分第8题Whichofthefollowingbestdescribestheauthor'

sattitudetowardtheincreasingamountofcarbondioxideintheatmosphereanditsconsequences?

　　A

　　Incredulous.BInterestedbut

　　skeptical.CAngryyet

　　resigned.DObjectiveyetconcerned

1.0分第9题Itcanbeconcludedfrominformationcontainedinthepassagethattheaveragetemperatureatanaltitudeof1kilometerabovetheEarthisabout______.A15℃B9℃C25℃D-18℃

1.0分第10题Accordingtothepassage,whichofthefollowingistrueofthelasthundredyears?

　　AFossilfuelswereburnedforthefirst

　　time.BTheaveragetemperatureattheEarth'

ssurfacehasbecome2℃

　　cooler.CTheamountofcarbondioxideintheatmospherehasincreased

　　measurably.

　　DTheamountoffarmlandworldwidehas

　　doubled.

1.0分第11题FoodsareoverwhelminglythemostadvertisedgroupofallconsumerproductsintheUnited

　　States.Foodproductsleadinexpendituresfornetworkandspottelevisionadvertisements,discountcoupons,tradingstamps,contests,andotherformsofpremium

　　advertising.Inothermedia—newspapers,magazines,newspapersupplements,billboards,andradio—foodadvertisingexpendituresranknearthe

　　top.Foodmanufacturersspendmoreonadvertisingthananyothermanufacturinggroup,andthenation'

sgrocerystoresrankfirstamongall

　　retailers.Throughthe1970'

s,highlyprocessedfoodshaveaccountedforthebulkoftotal

　　advertising.Almostallcoupons,electronicadvertising,nationalprintedmediaadvertising,consumerpremiums（otherthantradingstamps）aswellasmostpushpromotioncomefromprocessedandpackagedfood

　　products.In1978,breakfastcereals,softdrinks,candyandotherdesserts,oilsandsaladdressings,coffee,andpreparedfoodsaccountedforonlyanestimated20percentoftheconsumerfood

　　dollar.Yettheseitemsaccountedforaboutonehalfofallmedia

　　advertising.Bycontrast,highlyperishablefoodssuchasunprocessedmeats,poultry,fishandeggs,fruitsandvegetables,anddiaryproductsaccountedforoverhalfoftheconsumerfood-at-home

　　dollar.Yettheseproductsaccountedforlessthan8percentofnationalmediaadvertisingin1978,and-virtuallynodiscount

　　coupons.Theseproductstendtobemostheavilyadvertisedbytheretailsectorinlocalnewspaper,wheretheyaccountforanestimated40percentofretailgrocerynewspaper

　　ads.Whenmeasuredagainsttotalfood-at-homeexpenditures,totalmeasuredfoodadvertisingaccountsforbetween3and3.7centsoutofeverydollarspentonfoodinthenation'

sgrocery

　　stores.Alittlelessthanonec