Americansliketohavedifferentkindsofpartiessuchasbirthdayparties，surpriseparties，teapartiesandhouse-warmingparties．Pajama（睡衣）partiesareoneofthemostpopularkindsofpartiesintheUS．Atapajamaparty，agroupof

　　Americansliketohavedifferentkindsofpartiessuchasbirthdayparties，surpriseparties，teapartiesandhouse-warmingparties．Pajama（睡衣）partiesareoneofthemostpopularkindsofpartiesintheUS．Atapajamaparty，agroupoffriendsspendthenightataperson'shouse．Itis agreatwayforchildrenorteenagerstogettogetherandhaveagoodtime．

　　Toholdapajamaparty，thehost（东道主）willusuallyplansomefunactivitiessuchaswatchingmoviesandplayingboardgamesandvideogames．Heorsheshouldalsopreparesomedelicioussnacksandfunfoodlikepizza．Guestsatapajamapartyshouldbringtheirownpajamas，toothbrushes，pillowsandblankets（枕头和毯子）．Butiftheyforgetsomething，theydon'tneedtoworrybecausethehostwillgivethemwhattheyneed．

　　Ifapajamapartyismainlyforfun，apromisnodoubtaveryimportantthinginmostAmericanschools．Apromisaformal（正式的）dancepartythatisheldatahighshchool．Thepartyisusuallyheldneartheendofthesenioryear，thelastyearofhighschool，soitisoftencalledgraduation（毕业）dance．Studentsaresupposedtowearformalclothesattheprom．APromQueenandaPromKingmayalsobecrowned（加冕）atmanyschools'proms．

　　31．Howmanykindsofpartiesarementionedinthepassage？___．

　　A．Four．

　　B．Five．

　　C．Six．

　　D．Seven．

　　32．Apajamapartyisheld___．

　　A．atacinema

　　B．atarestaurant

　　C．atahighschool

　　D．ataperson'shouse

　　33．Theguests___atapajamaparty．

　　A．canenjoysomefunactivities

　　B．mustusethehost'spajamas

　　C．havenosnacksoffunfoodtoeat

　　D．can'tgetwhattheyneedfromthehost

　　34．Thestudents___ ataprom．

　　A．wearformalclothes

　　B．playboardgames

　　C．areallcrowned

　　D．areallsurprised

　　35．What'sthebesttitle（题目）forthepassage？___

　　A．Americanschoollife

　　B．Pajamapartiesandproms

　　C．Americansleepinghabits

　　D．Birthdaypartiesandteaparties．