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1、第七套ClozeAmajorreasonforconflictintheanimalworldisterritory.Themaleanimal(1)___anarea.Thesizeoftheareais(2)___toprovidefoodforhim,his(3)___andtheiroffspring.Migratingbirds,forexample,divideupthebestterritoryintheorderof“firstcome,first(4)____.”Thelatearr
2、ivalsmayacquire(5)___territories,butlessfoodisavailable,ortheyaretooclosetothe(6)___oftheenemiesofspecies.Whenthereis(7)____overterritory,animalswillcommonlyuseforce,ora(8)_____offorce,todecidewhichwillstayandwhichwillgo.Itisinterestingtonote,(9)____,th
3、atanimalsseemtousethe(10)___amountofforcenecessarytodriveawaytheintruder.Thereisusuallynokilling.Inthe(11)____ofthoseanimalswhicharecapableofdoingeachotherharm,thereisa(12)____forthelosinganimaltoshowthewinninganimalthathewishestosubmit.Whenheshowsthis,
4、the(13)____normallystopsfighting.Animals(especiallybirds),whichcan(14)____escapefromconflictseemtohaveno(15)____againstkilling,andequallynomechanismfor(16)___.Thelosingbirdsimplyfliesaway.However,iftwodovesare(17)____inacage,andtheystartfighting,theywil
5、lcontinuetofightuntilonekillstheother.Weallthinkofthedoveasa(18)____ofpeaceand,(19)____itsnaturalhabitat,itispeaceful.Butthe“peace”mechanismdoesnot(20)____inacage.1.A.establishesB.buildsC.foundsD.erects2.A.largeB.wideC.enoughD.sufficient3.A.wifeB.mateC.
6、friendD.neighbour4.A.usedB.gotC.servedD.gained5.A.largerB.betterC.smallerD.worse6.A.placesB.nestsC.residencesD.habitats7.A.conflictB.fightC.argumentD.war8.A.practiceB.proofC.showD.comparison9.A.thenB.thereforeC.inadditionD.however10.A.minimumB.greatC.li
7、ttleD.much11.A.wayB.caseC.eventD.manner12.A.systemB.deviceC.methodD.solution13.A.killerB.loserC.victorD.successor14.A.hardlyB.neverC.narrowlyD.easily15A.preventionB.obstacleC.stopD.way16.A.submissionB.fightingC.stoppingD.winning17.A.stationedB.perchedC.
8、placedD.deposited18.A.signB.signalC.symbolD.mark19.A.inB.byC.atD.on20.A.appearB.continueC.applyD.workGrammarandvocabulary1.Thedoctorrecommendsme____onastrictdiet.A.togoB.goingC.IshouldgoD.go2.Thesecretaryidentified_____reportstre
