the earth’s temperature is rising. and as it does, springtime 阅读理解答案,

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1、TheEarth’stemperatureisrising.Andasitdoes,springtime阅读理解答案,　　TheEarth’stemperatureisrising.Andasitdoes,springtimephenomena—likethefirstbloomofflowers—aregettingearlierandearlier.Butrisingtemperaturesaren’ttheonlyfactor.Urbanlightpollutionisalsoquickeningtheco

2、mingofspring.“Sotemperatureandlightarereallycontributingtoadoublewhammyofmakingeverythingearlier.”RichardFfrench-Constant,anentomologistattheUniversityofExeter.　　Heandhiscolleaguescompiled13yearsofdatafromcitizenscientistsintheU.K.,whotrackedthefirstbud(芽)bur

3、stoffourcommontrees.Turnsout,lightpollution—fromstreetlightsincities,andalongroads—pushedbudburstafullweekearlier.Waybeyondwhatrisingtemperaturescouldachieve.Thisdisruptive(干扰性的)timingcanripplethroughtheecosystem.　　Thecaterpillarsthatfeedontreesaretryingtomat

4、chthehatchingoftheireggstothetimingofbudburst.Becausethecaterpillarswanttofeedonthejuiciestandleastchemicallyprotectedleaves.Andit’snotjustthecaterpillars,ofcourse,thatareimportant.Buttheknock-oneffectisonnestingbirds,whicharealsotryingtohatchtheirchicksatthe

5、sametimethatthere’sthemaximumnumberofcaterpillars.Soearlierbudscouldultimatelyaffectthesurvivalofbirds,andbeyond.ThefindingsareintheProceedingsoftheRoyalSocietyB.　　Theworld’sbecomingincreasinglyurbanized,andlightpollutionisgrowing—whichRichardsayscouldtricktr

6、eesintobuddingearlierandearlier.Butsmarterlighting—likeLEDsthatdialdowncertainwavelengths—couldhelp.“Perhapstheexcitingthingis,ifweunderstandmoreabouthowlightaffectsthisbudburst,wemightbeabletodevisesmartersortofstreetlightingthathaslessredcomponents,andthere

7、forelessearlybudburst.Thusitispossibletokeepspringtimeanactualspringtimephenomenon.”Richardadd.　　28.HowdidRichardandhiscolleaguesreachtheconclusion?　　A.Byanalyzingsomedata.　　B.Byobservingnatureclosely.　　C.Bydoingalotofexperiments.　　D.Bykeepingtrackoffourcommo

8、ntrees.　　29.Whydothecaterpillarshatcheggsatthesametimeofbudburst?　　A.Toprotectyoungleaves.　　B.Togethighqualityfood.　　C.Togivebirthtohealthybabies.　　D.Toavoidbeingthemealsofbirds.　　30.Howd