plants are flowering faster than scientists predicted（预测）in reaction to climate change高考阅读答案

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1、Plantsarefloweringfasterthanscientistspredicted（预测）inreactiontoclimatechange高考阅读答案　　Plantsarefloweringfasterthanscientistspredicted（预测）inreactiontoclimatechange,whichcouldhavelongdamagingeffectsonfoodchainsandecosystems.　　Globalwarmingishavingagreateffectonhundredsofplantandanimalspeciesaroun

2、dtheworld,changingsomelivingpatterns,scientistssay.　　Increasedcarbondioxide（CO2）intheairfromburningcoalandoilcanhaveaneffectonhowplantsproduceoxygen,whilehighertemperaturesandchangeablerainfallpatternscanchangetheirpatternsofgrowth.　　“Predictingspecies’reactiontoclimatechangeisamajorchallenge

3、inecology,”saidtheresearchesofseveraluniversities.Theysaidplantshadbeenthekeyobjectofstudybecausetheirreactiontoclimatechangecouldhaveaneffectonfoodchainsandecosystemservices.　　Thestudy,publishedontheNaturewebsite,usesthefindingsfromplantlifecyclestudiesandexperimentsacrossfourcontinentsand1,

4、634species.Itfoundthatsomeexperimentshadunderestimated（低估）thespeedoffloweringbytimesandleafingby4times.　　“Acrossallspecies,theexperimentsunder-predictedthespeedoftheadvance—forbothleafingandflowering—thatresultsfromtemperatureincreases,”thestudysaid.　　Thedesignoffutureexperimentsmayneedtobeim

5、provedtobetterpredicthowplantswillreacttoclimatechange,itsaid.　　PlantsarenecessaryforlifeontheEarth.Theyarethebaseofthefoodchain,usingphotosynthesis（光合作用）toproducesugarfromcarbondioxideandwater.Theyletoutoxygenwhichisneededbynearlyeveryorganismontheplanet.　　Scientistsbelievetheworld’saveraget

6、emperaturehasrisenbyabout℃since1900,andnearly℃everytenyearssince1979.　　Sofar,effortstocutemissions（排放）ofplanet-warminggreenhousegasesarenotseenasenoughtopreventtheEarthheatingupbeyond2℃thiscentury—apointscientistssaywillbringthedangerofachangeableclimateinwhichweatherextremesarecommon,leading

7、todrought,floods,cropfailuresandrisingsealevels.　　57.WhatisthekeyinformationtheauthorwantstogiveinParagraph1?　　A.Plants’reactiontoweathercouldhavedamagingeffectsonecosystem.　　B.Theincreasingspeedoffloweringisbeyondscientists’expectation.　　C.C