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1、高考专题十七 词义猜测Passage1(2014课标Ⅰ,B)体裁:说明文 词数:298Passengerpigeons(旅鸽)onceflewovermuchoftheUnitedStatesinunbelievablenumbers.Writtenaccountsfromthe18thand19thcenturiesdescribedflocks(群)solargethattheydarkenedtheskyforhours.Itwascalculatedthatwhenitspopulation
2、reacheditshighestpoint,thereweremorethan3billionpassengerpigeons—anumberequalto24to40percentofthetotalbirdpopulationintheUnitedStates,makingitperhapsthemostabundantbirdintheworld.Evenaslateas1870whentheirnumbershadalreadybecomesmaller,aflockbelievedtob
3、e1milewideand320miles(about515kilometers)longwasseennearCincinnati.Sadly,theabundanceofpassengerpigeonsmayhavebeentheirundoing.Wherethebirdsweremostabundant,peoplebelievedtherewasanever-lastingsupplyandkilledthembythethousands.Commercialhuntersattracte
4、dthemtosmallclearingswithgrain,waiteduntilpigeonshadsettledtofeed,thenthrewlargenetsoverthem,takinghundredsatatime.Thebirdswereshippedtolargecitiesandsoldinrestaurants.Bytheclosingdecadesofthe19thcentury,thehardwoodforestswherepassengerpigeonsnestedhad
5、beendamagedbyAmericans’needforwood,whichscattered(驱散)theflocksandforcedthebirdstogofarthernorth,wherecoldtemperaturesandspringstormscontributedtotheirdecline.Soonthegreatflocksweregone,nevertobeseenagain.In1897,thestateofMichiganpassedalawprohibitingth
6、ekillingofpassengerpigeons,butbythen,nosizableflockshadbeenseeninthestatefor10years.ThelastconfirmedwildpigeonintheUnitedStateswasshotbyaboyinPikeCounty,Ohio,in1900.Foratime,afewbirdssurvivedunderhumancare.Thelastofthem,knownaffectionatelyasMartha,died
7、attheCincinnatiZoologicalGardenonSeptember1,1914.1.Inthe18thandearly19thcenturies,passengerpigeons . A.werethebiggestbirdintheworldB.livedmainlyinthesouthofAmericaC.didgreatharmtothenaturalenvironmentD.werethelargestbirdpopulationintheUS2.Theunderlin
8、edword“undoing”probablyreferstothepigeons’ . A.escapeB.ruinC.liberationD.evolution3.Whatwasthemainreasonforpeopletokillpassengerpigeons?A.Toseekpleasure.B.Tosaveotherbirds.C.Tomakemoney.D.Toprotectcrops.4.Whatcanweinferaboutthelawpass
