阅读理解请根据短文内容为每题确定l个最佳选项TheNationalTrustTheNationalTrustinBritainplaysanincreasinglyimportantpartinthepreservationforpublicenjoymentofthebestthatisleftunspoiledoftheBritishcountryside.AlthoughtheTrusthasreceivedpracticalandmoralsupportfromtheGovernmentitisnotarichgovernmentdepartment.ItisavoluntaryassociationofpeoplewhocarefortheunspoiledcountrysideandhistoricbuildingsofBritain.Itisacharitywhichdependsforitsexistenceonvoluntarysupportfrommembersofthepublic.Itsprimarydutyistoprotectplacesofgreatnaturalbeautyandplacesofhistoricalinterest.TheattentionofthepublicwasthefirstdrawntothedangersthreateningthegreatoldhousesandthecastlesofBritainbythedeathoftheLordLothianwholefthisgreatseventeenth-centuryhousetotheTrusttogetherwiththe4500-acreparkandestatesurroundingit.ThisgiftattractedwidepublicityandstartedtheTrust’sCountryHouseSchemeUnderthisschemewiththehelpoftheGovernmentandthegeneralpublictheTrusthasbeenabletosaveandmakeaccessibletothepublicabout150oftheseoilhouses.Latsyearabout1.75millionpeoplepaidtovisitthesehistorichousesusuallyataverysmallcharge.InadditiontocountryhousesandopenspacestheTrustnowownssomeexamplesofancientwindandwatermillsnaturereserves540farmsandnearly2500cottagesorsmallvillagehousesaswellassomecompletevillages.Inthesevillagesnooneisallowedtobuilddevelopordisturbtheoldvillageenvironmentinanywayandallthehousesaremaintainedintheiroriginal16thcenturystyle.Over4000acresofcoastlinewoodlandandhillcountryareprotectedbytheTrustandnodevelopmentordisturbancesofanykindarepermitted.Thepublichasfreeaccesstotheseareasandisonlyaskedtorespectthepeacebeautyandwildlife.Overthepast80yearstheTrusthasbecomeabigandimportantorganizationandanessentialandrespectedpartofnationallife.IthelpstopreserveallthatandofhistoricalsignificancenotonlyforfuturegenerationsofBritonsbutalsoforthemillionsoftouristswhoeachyearinvadeBritaininsearchofagreathistoricandculturalheritage.AllthefollowingcanbeinferredfromthepassageEXCEPT______.