2013届高三英语星级阶梯浏览练习三星级3OttawaisthecapitalofCanada.ItisthesecondlargestcityinOntarioandthefourthlargestcityinthecountry.TheCentreBlockisthemainbuildingonParliamentHill(国会山).Itisalsothelocationofseveralceremonialspaces,suchastheHallofHonorandtheMemorialChamber.ThepresentCentreBlockistheseconditerationofthebuilding，afterthefirstwasdestroyedbyfirein1916，anditisoneofthemostrecognizablebuildingsinCanada.DowntownOttawaisthecommercialandeconomiccentreofthecity.Mostofthebuildingsareofficetowers.WhilemostofOttawa’shightechindustryisbasedelsewhere,ithasasignificantpresenceinthedowntowncore.Thedowntownalsocontainsanumberofapartments,hotels,andtheoldersinglefamilyhomesandtownhousesalongitsedges.TheNationalGalleryofCanadaisoneofCanada，spremierartgalleries.TheGalleryhasalargeandvariedcollectionofpaintings,drawings,sculptureandphotographs.AlthoughitsfocusisonCanadianart,italsoholdsworksbysomenotedAmericanandEuropeanartists.TheRideauCanalistheoldestcontinuouslyoperatedcanalsysteminNorthAmerica.Attheverybeginning，thepurposeoftheRideauCanalwasmilitary,asitwasintendedtoprovideasecuresupplyandcommunicationroutebetweenMontrealandtheBritishnavalbaseinKingston.Itremainsinusetodayprimarilyforpleasureboating,withmostofitsoriginalstructuresremained.Thelocksonthesystemopenfornavigationinmid-Mayandcloseinmid-October.56.Whatdoes"iteration"probablymeaninthe2ndparagraph?_____.A.RepairB.DesignC.CopyD.Landmark57.InthecoreofDowntownOttawa,wecouldsee_____.A.alargenumberoftalltowersB.headofficesofOttawa’shightechindustryC.anumberofapartmentsandhotelsD.theoldersinglefamilyhomesandtownhouses58.CollectionsintheNationalGalleryofCanadaaremainly_____.A.paintingsanddrawingsB.sculptureandphotographsC.worksbyCanadianartistsD.artworkbyAmericansandEuropean59.WhichofthefollowingistrueabouttheRideauCanal?_____.A.ItistheoldestcanalsysteminNorthAmericaB.ItwasoriginallyforthemilitarypurposeC.TheoriginalstructuresremainneverchangedD.PeoplecanonlygoboatingfromMaytoOctoberB