IntheUnitedStates，thereweresomewell-constructedhousesfornativeIndians，rangingfromthesimplebrushsheltertothefive-storiedpueblo．IntheeasternUnitedStates，oneoftheexistingtypeswasthatcommonlyknowundertheAlgonk

　　IntheUnitedStates，thereweresomewell-constructedhousesfornativeIndians，rangingfromthesimplebrushsheltertothefive-storiedpueblo．

　　IntheeasternUnitedStates，oneoftheexistingtypeswasthatcommonlyknowundertheAlgonkiannameofwigwaminwhichtheIroquoisIndianslived．Thewigwamswereofwagon-topshapewithstraightsidesandends，madebybendingyoungtreestoformtheroundshape．OverthisshapepiecesoftreebarkwerelaidtoprotecttheIndiansfrombadweather．Overthebarkdriedgrasswasadded．Asmallholeallowedsmoketoescapefromthetop．Doorwaysateachendservedalsoaswindows，TheIroquoisIndiansbuilttrunkwallsallaroundtheirvillages．Thewallhadonlyoneopening，Theycouldquicklyclosethisopeningiftheirenemiescamenear．

　　Interestingly，theChoctawIndiansinMississippialsolivedinawigwamofamostprimitive（原始的）construction，butdifferentfromthoseoftheIroquoisIndians．TheChoctawIndians’wigwams，madefrommud，caneandstraw，wereintheformofabee-hive．Thecoveringwasmadeofalong，toughgrass．Apostinthecentresupportedtheroof．Aholeinthetopadmittedthelight，andallowedthesmoketopassout．

　　Thetipitent-housingoftheupperlakeandplainsareawasputupwithpolessetlightlyintheground，tiedtogethernearthetop，andcoveredwithbarkandgrassinthelakecountry．Itwaseasilyportable，andtwowomencouldsetituportakeitdownwithinanhour．

　　ThePawnee，MandanandotherIndiantribes（部落）alongtheMissouribuiltsolidring-shapedstructuresoftrunk，coveredwithearthanddriedgrass，housingadozenfamilies．

　　TheWichitaandothertribesoftheTexasborderbuiltlargering-shapedhousescoveredwithdriedgrass．

　　Apartfromtheregularhousing，almosteverytribehadsomestyleofhousing．

　　52．WhichofthefollowingpicturesshowsthehousefortheIroquoisIndians？___

　　53．Accordingtothepassage，thePawneeIndiansbuilttheirhouses___．

　　A．withopeningsinthetrunkwalls B．largeenoughforseveralfamilies

　　C．inaringshapewithbarkandmud D．bybendingyoungtreestoformtheshape

　　54．AllthenativeIndianhousesdescribedinthepassagewere___．

　　A．ofthesameshape B．covered