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1、【王鑫托福阅读】托福TPO全集之TPO22-1TPO22TP022-11・Accordingtoparagraph1,eachofthefollowingistrueofSpartinaalrern辻lotaEXCEPTA.Ttrarelyflowersinsaltmarshes.B.Itgrowswellinintertidalzones.C・Itiscommonlyreferredtoascordgrass・D.ItoccursnaturallyalongtheGulfCoastandthe
2、AtlanticcoastoftheUnitedStates.2.Accordingtoparagraph2,amajorreasonwhynaturalsaltmarshesaresoproductiveisthattheyareA.inhabitedbylong-livedseaweedandmarshgrassesthatreproducegraduallykeptclearofexcessplantmaterialbythetidesC.regularlysuppliedwithhigh
3、levelsofnutrientsD.hometoawidevarietyofdifferentspeciesofgrasses3.Whichofthesentencesbelowbestexpresstheessentialinfonnationinthehighlightedsenteneeinthepassage?Incorrectchoiceschangethemeaninginimportantwaysorleaveoutessentialinformation^A.Insectsfe
4、edonlyondeadcordgrass,whilemostothermarshinhabitantsfeedonlivecordgrass・B.Themarshisagoodhabitatforinsects,butarelativelypooroneforbirdsandanimals・C・Althoughcordgrassprovidesfoodforbirdsandamimals,itgivesinsectsbothfoodandaplaceto1ive.D.Cordgrassprov
5、idesfoodfornumerousinsects,birds,andotheranimals.SpartinaParagraph1:Spartinaalterniflora,knownascordgrass,isadeciduous,perennialfloweringplantnativetotheAtlanticcoastandtheGulfCoastoftheUnitedStates.Itisthedominantnativespeciesofthelowersaltmarshesal
6、ongthesecoasts,whereitgrowsintheintertidalzone(theareacoveredbywatersomepartsofthedayandexposedothers)・Paragraph2:Thesenaturalsaltmarshesareamongthemostproductivehabitatsinthemarineenvironment.Nutrient-richwaterisbroughttothewetlandsduringeachhightid
7、e,makingahighrateoffoodproductionpossible.Astheseaweedandmarshgrassleavesdie,bacteriabreakdowntheplantmaterial,andinsects,smallshrimplikeorganisms,fiddlercrabs,andmarshsnailseatthedecayingplanttissue,digestit,andexcretewasteshighinnutrients.Numerousi
8、nsectsoccupythemarsh,feedingonlivingordeadcordgrasstissue,andredwingblackbirds,sparrows,rodents,rabbits,anddeerfeeddirectlyonthecordgrass.EachtidalcyclecarriesplantmaterialintotheoffshorewatertobeusedbythesubtidaIorganisms.2.Whatistheorganizationalst
