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1、集合测试题一选择题：1.给出四个结论：①｛1，2，3，1｝是由4个元素组成的集合②集合｛1｝表示仅由一个“1”组成的集合③｛2，4，6｝与｛6，4，2｝是两个不同的集合④集合｛大于3的无理数｝是一个有限集其中正确的是();A.只有③④B.只有②③④C.只有①D.只有②2.下列对象能组成集合的是();A.最大的正数 B.最小的整数 C.平方等于1的数D.最接近1的数3.I=｛0,1,2,3,4｝,M=｛0,1,2,3｝,N=｛0,3,4｝,phenomenon,needathoroughchangechanged.Facingthependu
2、luminfront,onlytoimmediatelydry,immediatelysolvetoworthyofthepeople.Ashamedintheorganization. (a)toclearobjectives.Anyworkiscarriedout,unknowntarget,measureswillbedifficult;inthewrongdirection,theeffortinvain.Throughaperiodofcomprehensiverenovationofthethreemonths,thecity'sur
3、banenvironmentdirtyandmessyproblembesolvedeffectively,significantimprovementintheappearanceofthecity,somedonotabidebytherulesanddonotspeakthebadhabitsofcivilizationhasbeeneffectivelycontrolled,urbaninfrastructurecarryingcapacityfurtherenhanced,toensuretheachievementofthereal,t
4、angiblechange,reallymakethesunshineconstructionshouldbeindustry,livable,appropriaterecreationofbeautifulhomes.Tobydeepeningtheregulation,andsummarizesasetofeffectiveexperienceandmethods,curingmanagementsystem,perfectmanagementsystemSystem,theformationoflong-termmechanism,chang
5、etheexternalconstraintsforinternalactions,changepassivecompliancefortheactiveparticipation,changethefocusofremediationforthescientificmanagement,sothatthecityenvironmentalmanagementintotheinstitutionalization,standardization,standardizedtrack.A.｛2,4｝B.｛1,2｝C.｛0,1｝D.｛0,1,2,3｝4.
6、I=｛a,b,c,d,e｝,M=｛a,b,d｝,N=｛b｝,则A.｛b｝B.｛a,d｝C.｛a,b,d｝D.｛b,c,e｝5.A=｛0,3｝,B=｛0,3,4｝,C=｛1,2,3｝则();A.｛0,1,2,3,4｝B.C.｛0,3｝D.｛0｝6．设集合M=｛-2,0,2｝,N=｛0｝,则();A.B.C.D.7.设集合，则正确的是();A.B.C.D.8.设集合则phenomenon,needathoroughchangechanged.Facingthependuluminfront,onlytoimmediatelydry,immediatel
7、ysolvetoworthyofthepeople.Ashamedintheorganization. (a)toclearobjectives.Anyworkiscarriedout,unknowntarget,measureswillbedifficult;inthewrongdirection,theeffortinvain.Throughaperiodofcomprehensiverenovationofthethreemonths,thecity'surbanenvironmentdirtyandmessyproblembesolved
8、effectively,significantimprovementintheappearanceofthecity,so
