生态环保自然灾害类话题阅读练习(阅读理解10篇).docx
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1、【生态环保、自然灾害类】话题阅读练习(阅读理解10篇)Passage1Earthisinthemidd1eofaninsectcrisis,withthousandsofspeciesdec1iningoverthepastsevera1decades.Scientistshaveoftenb1amedthisonhabitat1ossorpesticide(杀虫剂)use.Butanewstudyofbutterf1iesinthewesternUnitedStateshasfoundthatwarmerfa11weathermaybeanequa1,ifnotmore,ofafactor.
2、Overthepastfourdecades,morethan450butterf1yspecieshavedec1inedatanaveragerateofnear1y2percentayear,accordingtoastudypub1ishedinScience.Itsa1readyknownthatthewesternmonarchbutterf1yhasp1ummetedinpopu1ationby99.9percentandwasrecent1ydeniedprotectionbyEndangeredSpeciesActintheU.S.Butthestudyrevea1ed1es
3、ser-knownspecies,1iketheBoisduvaKsb1ueandCa1iforniasstateinsect,theCa1iforniadogfacebutterf1y,areheadingtowardextinction.Theinf1uenceofc1imatechangeisdrivingthosedec1ines,whichmakessensebecausethey,resowidespread/saysstudy1eaderMathewForister.Toreachtheirtroub1ingfindings,theresearcherscombineddatab
4、asesofthebutterf1ycountconductedbyscientistsandamateurinsectenthusiastsat721ocationsinthewesternU.S.Tofocusonthecontributionofc1imatechange,theresearchersmadesuretoinc1ude1ocationsthatwerere1ative1yundisturbedbyagricu1tureandhumandeve1opmentto1imittheinf1uenceofotherthreatstobutterf1iessuchashabitat
5、1ossandpesticides.Morethan200citiesacrosstheU.S.areexperiencingwarmerfa11seasons.InArizona,forinstance,fa11temperatureshaverisenby0.2degreeFahrenheiteverydecadesince1895.Asforwhywarmingfa11saresoharmfu1,itmaybeconnectedtobutterf1ies/hibernation-1ikediapause(滞育)inthefa11.Warmertemperaturescou1dbeforc
6、ingtheinsects,mostofwhich1ivearoundayear;tostayawake1ongerandstarve.Inotherwords,theyregettingo1dandfragi1eanddyingsooner.Giventhatbutterf1iesarekeypo11inators(传花粉者),suchdec1inespredictbiggerprob1emsforp1antsandevenwho1eecosystems.Foristeradds,Thec1imateeffectswi11a1mostcertain1yaffectmanyotherinsec
7、ts;inc1udingbees.Andtheseeffectswi11damageeffortstoprotectandrestorebutterf1yhabitat.1.Whatdoestheunder1inedword,p1ummetedmeaninParagraph2?A. Recovereds1ow1y.B. Decreasedsharp1y.C. Escapedsudden1y.D. Evo1vedrapid1y.2. WhatdidtheresearchersdoinParagraph3?A. Theyru1edouttheeffectsofhumanactivities.B.
8、Theytriedtoprotectthehabitatofbutterf1ies.C. Theyrefusedtouseamateurs/sciencedata.D. Theyidentifiedotherthreatstobutterf1ies.3. Howdowarmingfa11saffectbutterf1ies?A. Theyaffectbutterf1iesnatura11ifecyc1e.B. Theys1owdownbutterf1iesagingprocess.C. Theycausebutterf1iesto1osemorehabitats.D. Theyforcebut
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