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1、Unit1FestivalsaroundtheworldⅠ.阅读理解Youdon?thavetobeafanofmathstogetexcitedaboutPi(“π”)Day.Whiletheevent,whichisalsoAlbertEinstein?sbirthday,maystartwithsomecalculations,itismorethanlikelytoconcludewithasliceortwoofdeliciouspie.TheholidayisheldeveryMarch14,because“π”iswidelyrecogniz
2、edas3.14.Thetraditionofhonouring“π”beganatSanFrancisco?sExploratoriummuseum.OnMarch14,1988,physicistLarryShawconvincedhiscolleaguestomarkthedaybymarchingaroundoneofthemuseum?scircularspacesandconsumingfruitpies.Thecelebrationwasmadeofficialin2009whentheUSHouseofRepresentativesreco
3、gnizedMarch14asPiDay.Today,PiDayisobservedinmanycreativeways.StudentsattheCaliforniaInstituteofTechnologyinLosAngeleshostapie-eatingevent,whichbeginsat1:59amandfeatures26pies,eachofthemhavingadifferentflavourofthepopulardessert.Thoughthatmightseemrandom,thedate(3.14),time(1:59),th
4、enumberofpies(26),andthenumberofvarieties(5),recreatethefirstninedigitsofPi:3.14159265!StudentsapplyingfortheMassachusettsInstituteofTechnology(MIT)inBostoneagerlywaitforthedayeveryyeartofindoutiftheyhavebeenaccepted.However,insteadofsendingouttheoffersat3:14pm,theinstitutionwaits
5、till6:28pm.6.28isreferredtoasTau,whichisPimultipliedby2.ThenumberisbelievedtobemuchmorereliablethanPibysomeexpertsandevenhasitsowncelebrationonJune28.Since2017,MIThasalsousedPiDayasafundraisertosupportitsstudents,departmentsandprogrammes.ThetownofPrinceton,NewJersey,whereEinsteinl
6、ivedfrom1935untilhisdeathin1955,celebratestheoccasionwithmulti-dayfestivitiesthatendonMarch14.Visitorscanparticipateinconcerts,shows,aswellaspie-eating,pi-recitation,andEinstein-lookalikecontests.1.WherewasPiDayoriginallycelebrated?A.InSanFrancisco.B.InLosAngeles.C.InCambridge.D.I
7、nPrinceton.2.WhenwasPiDaymadeanofficialholiday?A.In1955.B.In1988.C.In2009.D.In2017.3.WhatdoesMITdoonPiDayaccordingtothepassage?A.Informapplicantsofadmissionresults.B.Conductacalculatingtest.C.Organizeamarcharoundthecampus.D.Makedessertsofdifferentflavours.4.What?stheauthor?spurpos
8、einwritingthetext?A.Toadvise.B.To
