[简答]  选择题　　WhenBilldeBlasioranforNewYorkCitymayorlastyear,hepromisedtoendacontroversial（有争议的）,citywidecell-phoneban（禁令）inpublicschools,whichisnotequallyenforcedinallschools.Now,underhisleadership,thecityispreparingtoendtheban.Itwillbereplacedbyapolicythatallowsphonesinsideschoolsbuttellsstudentstokeepthempackedawayduringclass.　　Manyschoolshavearuleaboutenforcingthebanthatsays,“Ifwedon'tseeit,wedon'tknowaboutit.”ThatmeansteachersareOKwithstudentsbringingincellphones,aslongastheystayoutofsightandinsidebagsandpockets.　　Butatthe88cityschoolswithmetaldetectors,diebanhasbeenstrictlyenforced.Thedetectorswereinstalledtokeepweaponoutofschools，butthescanners（扫描器）canalsodetectcellphones.Sostudentsattheseschoolsmustleavetheirphonesathomeorpaysomeonetostoreitforthem.　　Thebanwasputintoplacein2007undermayorMichaelBloomberg.Endingthebanwillalsolikelyendanindustrythathassprungupneardozensoftheschoolsthatenforcetheban.Workersinvans（厢式货车）thatresemblefoodtracksstoreteens'cellphonesandOtherdevicesforadollaraday,　　Criticsofthebansaycellphonesareimportantsafetydevicesforkidsduringanemergency.Theyalsosaythatenforcementofthebanisunevenanddiscriminatory.Wherethebanisenforced,itputsadisadvantageonstudentswhocan'taffordtopaytostoretheirphones.　　Beforeputtinganofficialendtothecell-phoneban,cityeducationofficialsareworkingoncreatinganewpolicy.Itwillincluderulesaboutnotusingthephonesduringclassortocheatontests.　　1.Whichofthefollowingisthemainideaofthepassage?　　A.NewYorkCitywillgivefinancialaidtopoorstudents.　　B.NewYorkCityplanstorestrictcellphoneuseinlibraries.　　C.NewYorkCitywillsoonendabanoncellphonesinschools.　　2.Studentspayadaytoleavetheircellphonesinavanparkedneartheirschool.　　A.adollar　　B.twodollars　　C.fivedollars　　3.Metaldetectorswereinstalledin88cityschools,mainlytokeepoutofschools.　　A.cellphones　　B.weapons　　C.drugs　　4.TheworddiscriminatoryinParagraph5probablymeans.　　A.necessary　　B.tough　　C.unfair　　5.Accordingtothepassage,whichofthefollowingstatementsisTRUE?　　A.Afterthecell-phonebanisended,studentscanusetheirphonesduringclass.　　B.Thecell-phonebanisequallyenforcedinallpublicschools.　　C.Aphone-storageindustryhasappearedoutsidethe88metal-detectorcampuses.