吉林省四平市2014高考英语阅读理解巩固全程训练（9）及答案阅读理解(共20小题；每小题2分，满分40分)阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。【广东省2012届高三考前冲刺卷(七)】APlantsthatliveintherainforesthaveadaptedinamazingwaystoseveralverydifficultconditions.Thismeansthattheplanthaschangedsomethinginits“body”or“habits”tomakeiteasiertosurviveindifficultconditions.Thereareseveralconditionstheyhavehadtoadaptto.First，thesoiloftheforestfloorisshallow.Also，thesoiloftherainforestisnotveryrich，oreasytogrowin.Nextistheproblemofveryheavyrainwhichcontinuesoveralargepartoftheyear.Finally，manyplantsoftherainforestarefoodforanimalsthatlivethere.Thebiggestproblemthatrainforestplantshavetoadapttoisthelackofsunlightintherainforest’slowerlevels.Plantshaveadaptedtothisprobleminseveralways.Manyplantshaveverylargeleaves.Thelargeleafishelpfulbecauseithasabiggersurfacearea.Thebiggersurfaceareaaleafhas，themoresunlightitcanabsorb.Thecanopytreesadaptbygrowingtobe100feettallsothattheirleavescangraballavailablesunlight.Otherplantscalledlianas(climbingwoodyvines)haveadaptedbyrootingthemselvesinthesoiloftheforestfloorandgrowingupthetreesuntiltheyreachthecanopylayer.Stillotherplants，suchasepiphytes，haveadaptedbygrowingdirectlyonthetrees’trunksandbranchesinthecanopyandunderstorylayersoftherainforest.Anadaptationtothelargeamountsofrainfallthatmanyrainforestplantshaveiscalled“driptips”．Theirleavesaretapered(逐渐变细)toasharppointattheend.Thisallowswatertorunofftheleafquickly.Therearemanyotheradaptationsthatrainforestplantshavemadetotheirenvironment.Thesewillbediscussedindetail，asweinvestigatetheplantsoftherainforest!26．Whichofthefollowingisadifficultythattherainforestplantshavetoface?A．Changesintheir“body”or“habits”．B．Soilthatisnotverydeep.C．Epiphytesthatgrowontrees’trunks.D．Theworseningofthenaturalenvironment.27．Howdolianasadapttotheenvironmentintherainforest?A．Theygrowunderbigleavesforprotection.B．Theyrelyonotherplantstoreachthecanopylayer.C．Theychangetheirleafstructureconstantly.D．Theygrowonotherplants’branches.28．Theunderlinedword“This”inParagr