PassageTwo
Questions26to30arebasedonthefollowingpassage.
Certainanimalsandplantsdevelopcharacteristics(特性)thathelpthemcopewiththeirenvironmentbetterthanothersoftheirkind.Thisnaturalbiologicalprocessiscalledadaptation(适应性).Amongthesuperiorcharacteristicsdevelopedthroughadaptationarethosethatmayhelpingettingfoodorshelter，inprovidingprotection，andinproducingandprotectingtheyoung.Thatr esultsintheevolutionofmoreandmoreorganismsthatarebetterfittedtotheirenvironments.
Eachlivingthingisadaptedtoitswayoflifeinageneralway，buteachisadaptedespeciallytoitsowndistinctclass.Aplant，forexample，dependsuponitsrootstofixitselffirmlyandtoabsorbwaterandinorganicchemicals.Itd ependsuponitsgreenleavesforusingthesun'senergytomakefoodfrominorganicchemicals.Thesearegeneraladaptations，commontomostplants.Inaddition，therearespecialadaptationsthatonlycertainkindsofplantshave.Manyanimalshaveadaptationsthathelpthemescapefromtheirenemies.Someinsectsarehiddenbytheirbodycolororshape，andmanylooklikealeaforalittlebranch.Thecoatsofdeerarecoloredtomixwiththesurroundings.Manyanimalshavetheabilitytoremaincompletelystillwhenanenemyisnear.
Organismshaveagreatvarietyofwaysforadapting.Theymayadaptintheirstr ucture，function，andgenetics(遗传素质)；intheirdevelopmentandproductionoftheyoung；andinotherrespects.Anorganismmaycreateitsownenvironment，asdowarm-bloodedmammals.whichhavetheabilitytoadjustbodyheatexactlytomaintaintheiridealtemperaturedespitechangingweather.Usuallyadaptationsareanadvantage，butsometimesanorganismissowelladaptedtoaparticularenvironmentthat，ifconditionsChange，itfindsitd ifficultorimpossibletoreadapttothenewconditions.
Someplantsandanimalsdevelopsuperiorcharacteristicssothattheymay______.
A.helpothersoftheirkindgetfood，shelterandotherthingsneeded
B.getintothebiologicalprocessofadaptation
C.becomebetteradaptedtotheenvironmentsthanothersoftheirkind
D.leadtotheevolutionandproductionofmoreandmoreorganisms
正确答案：C[解析]见第一段，某些动植物发展特性以至于比其他同类能更好地适应环境。
