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1、222222.23.23Whatcanyoudotofightacold?Thereisntmuchyoucando.Antibioticdrugsdontworkagainstviruses.Nosedropsandcoughmedicinesonlyrelievesymptoms.Chickensoupseemstohelp.VitaminCmayhelptoo.Adoseof1,000milligramsofVitaminConthefirstdayofacoldmayquickenyourrecovery.Behealthyandyoumaynotcatchacoldatall.Eat
2、awell-balanceddietandgeteighthoursofsleepeachday.Exerciseregularly.Thecoldvirusspreadsthroughtheair,sostayawayfromcoughing,sneezingpeople.Also,thecoldviruscanliveuptothreehoursoutsidethebody.Thatmeansyoucanpickitupfromtouchingmoney,doorknobs,andotherpeople.Sowashyourhandsoften.Preventionisthebestact
3、ion!TOC o 1-5 h zThispassageismainlyconcernedwith.A)antibodiesB)virusesC)antibioticsD)commoncoldsThecommoncoldisstartedby.A)alowwhite-bloodcellcountB)avirusC)apoordietD)shakinghandswithotherpeopleWecanconcludefromthispassagethatthecommoncold.A)willbecurableinthenearfutureB)causesfatigueandwateryeyes
4、C)issomethingpeoplejusthavetolivewithD)canbepreventedwithnosedropsInthesecondandthirdparagraphs,theauthorexplainstheworkingsofacoldvirusthroughA)astep-by-stepexplanationB)scientificstudiesC)detailedwordpicturesD)alistofsymptomsAntibodiesare.A)proteinsthatattackvirusesB)whitebloodcellsC)drugsthatfigh
5、tvirusesD)vitaminsPassage3Perhapsyouhavemadeamajorpurchaserecently,oneforwhichasalesclerkaskedifyouwantedtopurchasereplacementinsurance.Thistypeofinsuranceisofferedforappliancesandelectronicsandusuallyinvolvesyourreceivingareplacementitemifyournewpurchasebreaksduringsomespecifiedtimeperiod,suchasthe
6、firstyear.Istheresomekindofmathematicalprincipleyoucanusetodecidewhetheryoushouldbuythistypeofinsurance,ormustyousimplyguesswhetherornotyournewpurchasewillbreakinthespecifiedtimeperiod?Asinmanyeverydayproblemsolvingsituations,mathematicscanprovideyouwithsomeassistanceinyourdecisionmaking.Todetermine
7、whetheryoushouldpurchasethereplacementinsurance,itwillbenecessarytocomputewhatstatisticianscalltheexpectedcost.Anexamplewillservetoilluminateboththemathematicalprincipleandthecomputationsinvolved.Ifthepurchaseditemcosts$60andtheinsuranceis$20,youneedonemorenumbertofindtheexpectedcost-theprobabilityo
8、ftheitembreakingorfailinginthespecifictimeperiod.Letssaythatprobabilityis25%;thatis,25%oronefourthoftheitemsarereturnedforreplacementinthetimeperiod.Ifinsuranceisnotpurchased,theexpectedcostwillbethesumoftwoquantities,onerepresentingthesituationinwhichtheitembreaksdownandoneforthesituationinwhichitd
9、oesnot.Iftheitemfails,theexpectedcostis25%ofthesumof$60plus$60(thatsecond$60isbecauseyouhavetopurchasetheitemasecondtime),or$30.Iftheitemdoesnotfail,theexpectedcostis75$plus$60%.Addingthesetwoamounts,$30plus$45,resultsin$75,andsincethisislessthanthetotalforpurchasinginsurance($60plus$20is$80),therep
10、lacementinsuranceisnotawisechoiceinthissituation.Thispassageismostlyconcernedwithfiguringout.A)therisingcostofinsuranceB)howtogetrefundsfordefectiveproductsC)whenyouneedreplacementinsuranceD)howtoknowwhetheraproductwillfailIfaproducthasafailurerateof25%,thenaboutwhatfractionoftheitemswillfailorbreak
11、ingiventimeperiod?A)onefourthB)onethirdC)onehalfD)threefourthsIfyoubuyreplacementinsuranceandyournewpurchasebreaksdown,you.A)getyourmoneybackB)getanewproductexactlythesameastheonethatbrokeC)canpickanewproductofequalvalueD)mustpurchasetheinsuranceasecondtimeThepassageexplainsexpectedcostby.A)defining
12、replacementinsuranceB)explaininginsuranceprobabilityC)givingfailureratesforvariousproductsD)givinganexampleofhowitworksInthispassagethewordilluminatemeansto.A)decoratewithcandlesB)brightenwithlightsC)makeunderstandableD)provePassage4Areyouplanningavacation?Ifyoulikehotandextremelydrysummers,gotoPhoe
13、nix,Arizona.Forhottemperaturesbutlotsofrainandthunderstorms,tryMiami,Florida.Ifyouwantaveragetemperaturesandrainfall,St.Louis,Missouri,isthespot.Orifyoureacoldweatherfan,headtoFairbanks,Alaska.Itswintersareverycoldwithlittleprecipitation.Eachofthesecitieshasacertaintypeofweather.Theaverageweatherfor
14、aplaceovermanyyearsiscalledclimate,andinnotwoplacesintheworldisitexactlythesame.Howcanthisbe?Manythingsinnature,suchassunshine,temperature,andprecipitation,affectclimate.Nearnesstomountain,oceans,andlargelakesaffectsittoo.Anotherfactorisaltitude,orheightabovesealevel.Aircoolsasaltitudeincreases.Soac
15、ityatahigheraltitudemaybecolderthanoneataloweraltitude.Finally,windsaffectclimate.Theymoveheatandmoisturebetweentheoceansandcontinents.Windskeepthetropicsfromoverheating.Theykeepthepolarregionsfromgettingoverlycold.Climatechangesoverlongperiodsoftime.Somescientiststhink,forexample,thattheearthsclima
16、techangedatthetimeofthedinosaurs.Theythinkthedinosaursdiedbecauseofthechange.Whatcausesaclimatetochange?Onepossiblecausemaybechangesinthesun.Sunspots,forexample,arecool,darkspotsthatformonthesun.Sunspotsmaydecreaseprecipitationontheearthandcauseunusuallydryperiods.Changesintheatmospheremaychangeclim
17、atetoo.Volcaniceruptions,forinstance,releasesolidparticlesintotheair.Theseparticlesmayformacloudthatblocksoutthesunsheat.Humanactivityisanothercauseofclimatechange.Airpollutionandthereductionofforestcovermayhavelong-termeffectsonclimate.TOC o 1-5 h zThispassageisconcernedwiththingsthataffect.A)preci
18、pitationB)climateC)altitudeD)sunspotsChangeinclimatemayhavecaused.A)dinosaurstodieB)darkspotstoformonthesunC)volcaniceruptionD)airpollutionTheeffectofavolcaniceruptiononclimatemaybetomakeit.A)wetterB)dryerC)warmeD)colderTohelpreadersunderstandhowclimatecanchange,thewriteruses.A)examplesB)astoryabout
19、theseashoreC)orderofimportanceD)astrongargumentWhichofthefollowingistheplaceofgreatestaltitudeonamountain?A)thefootofthemountainB)8,500feetupthemountainC)thetopofthemountainD)15,785feetupthemountainPartIIIVocabularyandStructureImafraidIveratherthehousethisweeksoitsabitofmess.A)ignoredB)neglectedC)fo
20、rgottenD)leftoutIcaughtaofthedriverofthegatewaycar,butIdoubtwhetherIwouldrecognizehimifIsawhimagain.A)glimpseB)glanceC)sightD)lookThedriverswerekilledinahead-oninvolvinganumberofcarsonthemainroadintotown.A)crashB)collisionC)clashD)crackThebankisusforrepaymentoftheloan.A)requiringB)hurryingC)urgingD)
21、pressingIcamerealinterest,notjusttohaveagoodtime.A)duetoB)underC)fromD)outofIsawhimoftenwhenhewasatschoolanduniversity,butafterhegotmarriedIlostofhim.A)contactB)connectionC)trackD)traceSheeachofthechildrentoanice-cream.A)entertainedB)feedC)treatedD)suppliedIninternationalcompetition,theAustraliansat
22、tennis.A)exceptB)excessC)exceedD)excelIsoonmyselfintherediscoveredpleasuresofthegame.A)concentratedB)lostC)focusedD)devotedWevedonealotofworkandweabreak.A)areworthB)areworthyofC)arevaluableofD)deserveThereisanetworkofroadsroundthecountry.A)mixedB)difficultC)complexD)confusingPutthatbottleofweed-kill
23、erthereachofthechildren.A)withinB)insideC)outofD)offHehadintendedtothebusinessovertohissonwhenheretired.A)handB)turnC)giveD)moveDoyouthinkthePresidentwillbeabletohispromisenottoraisetaxes?A)fulfillB)satisfyC)sacrificeD)contentIttookmealotoftimeandefforttoqualifyasadoctorbutIthereintheend.A)gotB)arri
24、vedC)succeededD)achievedThepopulationintheUnitedStates,whereimmigrantsaccountformorethantenpercentofresidents,increasesbyabout1percentannually,withjust0.2percentintheEU.A)comparingB)comparedC)beingcomparedD)andcomparedIfhisfatherhimtogointolaw,hewouldhavepursuedhisdreamofbeinganarcheologist.A)hasnot
25、persuadedB)didnotpersuadeC)hadnotpersuadedD)doesnotpersuadeOne-thirdofthefirmsemployeesdiedinthe9.11event,Billhadknownfor17years.A)someofthemB)someofthoseC)someofwhomD)someofwhichIearlyinthemorningandjogaroundthecampuswhenIwasincollege.A)usedtogetupB)usedtogettingupC)wasusedtogettingupD)wasusedtoget
26、upHespokesocasuallythematterhadnothingtodowithhim.A)justasB)asC)asifD)ifHespentthewholenightthinkingoverMr.Smithhadsaidatthemeeting.A)allwhatB)whichC)allD)thatTheyhavebeenworkingontheprojectforsevenmonths,bytheendoftheyeartheyit.A)havefinishedB)willbefinishedC)willbefinishingD)willhavefinishedItwasn
27、otuntilrecentlywelearnedthefamousfilmstarwouldmarrythatpolitician.A)whenB)whichC)thatD)thenThepromisingyoungmanisnotonlythemostpopularsingeronthecampusanamateurcomposer.A)butalsoB)andalsoC)aswellasD)aswellNotuntilaftertheexaminationshowhehadidledhistimeaway.A)herealizedB)whenherealizedC)didherealize
28、D)whendidherealizeNowadayswiththelivingstandardsrisingmanyparentsintendtohavetheirchildrenabroad.A)educateB)educatedC)toeducateD)beingeducatedThenaughtyboyclimbedupintothetreeandpickedallthemangoesreach.A)beyondB)offC)withinD)insideIhadplannedtoleaveGuangzhouthemorningofthe20th,butthetake-offwaspost
29、ponedtillthelateafternoonbecauseoftheweather.A)inB)onC)atD)forOnereasonadvertisingiswidelycriticizedisthereistoomuchadvertising.A)becauseB)forC)thatD)whyOurjobs,wewentonatriptoThailandtorelaxandenjoyourselves.A)weredoneB)hadbeendoneC)havingbeendoneD)havebeendonePartIVClozeIstandbeforeyoutodayasacand
30、idatefortheDemocraticnominationforthepresidencyoftheUnitedStates.IamnotthecandidateofblackAmerican,71Iamblackandproud.Iamnotthecandidate72thewomensmovementofthiscountry,althoughIamawoman,andIam73proudofthat.Iamthecandidateofthepeople.WiththisannouncementonJanuary25,1972,ShirleyChisholm74politicalhis
31、tory.Shewasthefirstblackwomanto75forthepresidentialnominationofamajorparty.WhowasShirleyChisholm?ShirleySt.Hillwas76inBrooklyn,NewYork,in1924.Fromtheageofthreetonearly10,shelivedwithhergrandmotherinBarbados.Whenshe77toherfamilyinBrooklyn,she78NewYorkpublicschools.Shereceivedadegree79sociologyfromBro
32、oklynCollege.Shemetand80ConradChisholm.Intheearly1960s,Chisholmandothers81theUnityDemocraticClub.Althoughunsupported82themalesintheclub,sheranfortheNewYorkStateAssemblyin1964.Shewonandtwoyears83wasreelected.In1968,sheranforCongress.Shewontheprimaryelection,then84herRepublicanopponent.Shebecamethefir
33、stblackwomanintheHouseofRepresentatives.Sheservedsevenyears.Inthe1970s,85thecivilrights86thewomensmovementswereasking,87awomanpresident?in1972,Chisholmwasurgedtorun.Althoughherprimaryelectionpercentageswere88,shestayedintheracetogiveAmericasneglectedgroupsa89.90,shewasnottheDemocraticPartysnominee,b
34、utshehadproventhatablackwomancouldbeaseriouscandidate.A.butB.althoughC.evenifD.howeverA.forB.ofC.byD.toA.veryB.moreC.muchD.equallyA.wroteB.createdC.madeD.becameA.runB.raceC.electD.selectA.bearB.bornC.borneD.boreA.backedB.reversedC.turnedD.returnedA.hadattendedB.attendedtoC.attendedD.hadattendedtoA.o
35、fB.toC.onD.inA.wasmarriedB.gotmarriedC.marriedD.marriedtoA.formedB.madeC.builtD.setA.withB.byC.fromD.ofA.beforeB.earlierC.laterD.latterA.strokeB.beatC.failedD.hitA.neitherB.bothC.eitherD.exceptA.orB.norC.forD.andA.WhyB.WhytoC.WhynottoD.WhynotA.smallB.slimC.largeD.goodA.choiceB.chanceC.opportunityD.s
36、electionA.AtlastB.BytheendC.IntheendD.OntheendReferenceKeyforWriting:Janeisastudent.Sheisaverygoodone.Janeisaverygoodstudent.Jackboughtashirt.Itwasred.Itwaslongsleeved.ackboughtared,long-sleevedshirt.Thebookmightbeinthelibrary.Itmightbeinthebookstore.Thebookmightbeinthelibraryorinthebookstore.Gwenwentschool.Mariawentschool.TheywentwithBob.GwenandMariawentschoolwithBob.T
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