SAT每日一题附答案和解析.doc

SAT每日一题附答案和解析阅读(2017年2月14日)CriticalReading>SelectanAnswerBuildingaroadthroughwildernesscertainlyhasavisibleimpactonlocalfloraandfaunayourephysicallypavingoverasliceofwhatwasoncehabitat.Butroadshavelessobviouseffects,too.Liketheintroductionoftrafficnoise,whichalsotakesatoll. Youcanseeanoilspillbutyoucantseeatrafficnoisespill.Soconvincingpeoplethatitsimportantisalittlemoredifficult,saidHeidiWare.WareisanornithologistattheIntermountainBirdObservatoryinBoise,Idaho.Sheandhercolleaguesstudiedthereactionsbybirdstothesoundsofvehicles.Andtheydiditwithoutpavingthegreatoutdoors.Instead,theymounted15pairsofspeakersonDouglasfirtrees,alongaridgenearBoise,andplayedtrafficnoise.Theythuscreatedwhattheycallaphantomroadthroughthewilderness,whichboostedlocalnoiselevels10decibelshigherthanthoseinthesurroundingforest.Turnsoutjustthesoundsoftrafficscaredawayathirdoftheareasusualavianvisitors,andcutspeciesdiversitytoo.Andbirdsofmultiplespecieswerenotabletopackonasmuchfattofueltheirmigrations,whentheywereforcedtodinetothesoundtrackoftraffic.Follow-upexperimentsinthelabfoundthat,whenitsnoisy,birdsspendalotlesstimeheaddown,peckingatfood,andalotmoretimescanningtheirsurroundings.WaresaysYosemite,GlacierandRockyMountainNationalParksallhaveroadsthatarebusyenoughtoproducetheseeffects.And,shortofclosingparkroadstotraffic,shesaysthingslikerubberizedasphaltandlowerspeedlimitscouldhelpcutthenoise. GlacierNationalParkisgoingtoputupsigns,thatinsteadofshowingyourspeedandpreventingpeoplefromspeeding,itsgoingtoshowhowloudtheircarisontheroad.Which,hopefully,willcontinuetoencouragewildernessloverstoleavenotracevisibleoraudible.Basedonthepassage,whichofthefollowingwouldmostlikelyresultfromtheconstructionofabusyroadinaforestthatisahabitatforbirds?(A)Thebirdsbecomeusedtounnaturalnoiseandstartbuildingtheirnestsdangerouslyclosetotheroad.(B)Migrationpatternsstarttochangebecausethebirdsrunoutofenergysoonerthantheypreviouslydid.(C)Thebirdsbegintodwellinquieterpartsofthesurroundingforestanddepletetheavailableresourcesinthosehabitats.(D)Predationbeginstoincreasebecausethebirdsareunabletomonitortheirsurroundingsforpredators.答案：B解析：Choice B is the best answer. According to the passage, birds exposed to traffic noise were not able to pack on as much fat to fuel their migrations. It is reasonable to infer that birds with less fat to sustain their migrations would be unable to fly as long or as far as they did before, leading to changes in their migration patterns.SAT每日一题附答案和解析写作(2017年2月17日)Writing&LanguageToshowhowacommondeskfancoolsaperson,RhettAllain,aphysicsprofessorandwriterforWiredmagazine,performedasimpleexperiment.Hewetapapertowelwithwarmwaterandwrappeditaroundathermometer.Allainwrappedasecondthermometerinadrypapertowel,andthenhesetboththermometersinfrontofafan.Initiallythefanwasturnedoff.Thetemperatureofthethermometerwrappedinthewetpapertoweldecreasedatfirstrapidly,thenmoreslowlyandeventuallydroppedbelowroomtemperature.Afterthefanwasturnedon,thetemperatureofthewetthermometerunderwentanotherrapiddecrease.Similarly,thetemperatureofthethermometerwrappedinthedrypapertowelbarelychangedduringtheentireexperiment.Thisexperimentdemonstratedthepowerofevaporationtocoolwetobjects,suchasasweatyperson,andtheroleofafaninmakingevaporationmoreeffective.A.NOCHANGEB.Bycontrast,C.Furthermore,D.Therefore,Writing&LanguageToshowhowacommondeskfancoolsaperson,RhettAllain,aphysicsprofessorandwriterforWiredmagazine,performedasimpleexperiment.Hewetapapertowelwithwarmwaterandwrappeditaroundathermometer.Allainwrappedasecondthermometerinadrypapertowel,andthenhesetboththermometersinfrontofafan.Initiallythefanwasturnedoff.Thetemperatureofthethermometerwrappedinthewetpapertoweldecreasedatfirstrapidly,thenmoreslowlyandeventuallydroppedbelowroomtemperature.Afterthefanwasturnedon,thetemperatureofthewetthermometerunderwentanotherrapiddecrease.Similarly,thetemperatureofthethermometerwrappedinthedrypapertowelbarelychangeddu