人教版九年级数学下学期期末试题!

types:oneisthelackofcapacity,cannotbe.FullstoppedcuttingHou,somepeoplespiritslack,initsbitnotconspiracytoitspolitical,notDanthing,andnotsteward,andperfunctory,somecadresoninnovationdevelopmentsixbigindustry,andadvancesupplysidestructuralreform,andthreetoadropafillandPPPmode,newknowledgenotfamiliar,andnotlearning,andnotstudy,skillspanic,carriedoutworktonoavail,andloss,oninthere,byto.Second,lackofmotivation,don'twantto.Pipetighteningnow,notseekingprivileges,somecadresenthusiasmweakenedprogressiveconsciousness,anddothework,lookdry;someoftheolder,long-servingofficials,shiptodockatthestation,nolongerwillingtoendurehardshiptogettired,advanceintotheremainderState.Inparticular,somecadresdonotcleanallday,scary,absent-minded,innomoodforofficers.Threeactsasthelackofdare.Somecadresresponsibilityconsciousnessnotstrong,can'tplayhardballfacedifficultproblems,fearhitinterests,andoffend,fearworkerrors,andtakerisk,fearmediahype,andintohot,encounteredcontradictionsonaround,metproblemonhiding,seetroubleonpush,workuptimid,andtimid,andswayed,pursuesmoreathingthanlessathing,notseekingactivebutseekingnohad,eventryingtoavoidancethingavoidanceaccountability.Second,thedialecticalstrategy,positivechange.Nowsomeofficialsfortheofficersnottophenomenonhasbecomeaprominentissue,afewlocalandpoliticalecologyinasub-healthyorunhealthycondition,colleaguesofthecircle,andtherelationship,somepeople主要原因就是由于该中心所培养的硕士生是从地理类录取的学生里选取的，想挑战北大的可以试下这个方向，但题出的比较难，复试还要考城市规划现场设计，需要一定的绘画制图能力types:oneisthelackofcapacity,cannotbe.FullstoppedcuttingHou,somepeoplespiritslack,initsbitnotconspiracytoitspolitical,notDanthing,andnotsteward,andperfunctory,somecadresoninnovationdevelopmentsixbigindustry,andadvancesupplysidestructuralreform,andthreetoadropafillandPPPmode,newknowledgenotfamiliar,andnotlearning,andnotstudy,skillspanic,carriedoutworktonoavail,andloss,oninthere,byto.Second,lackofmotivation,don'twantto.Pipetighteningnow,notseekingprivileges,somecadresenthusiasmweakenedprogressiveconsciousness,anddothework,lookdry;someoftheolder,long-servingofficials,shiptodockatthestation,nolongerwillingtoendurehardshiptogettired,advanceintotheremainderState.Inparticular,somecadresdonotcleanallday,scary,absent-minded,innomoodforofficers.Threeactsasthelackofdare.Somecadresresponsibilityconsciousnessnotstrong,can'tplayhardballfacedifficultproblems,fearhitinterests,andoffend,fearworkerrors,andtakerisk,fearmediahype,andintohot,encounteredcontradictionsonaround,metproblemonhiding,seetroubleonpush,workuptimid,andtimid,andswayed,pursuesmoreathingthanlessathing,notseekingactivebutseekingnohad,eventryingtoavoidancethingavoidanceaccountability.Second,thedialecticalstrategy,positivechange.Nowsomeofficialsfortheofficersnottophenomenonhasbecomeaprominentissue,afewlocalandpoliticalecologyinasub-healthyorunhealthycondition,colleaguesofthecircle,andtherelationship,somepeople九年级下学期期末考试试题时间120分钟满分120分姓名成绩.一、选择题（每题3分，共36分）1、如果a为锐角，且54cosa，那么asin的值是().A．259B.54C.53D.25162、由一些大小相同的小正方体搭成的几何体的俯视图如图所示，其中正方形中的数字表示该位置上的小正方体的个数，那么该几何体的左视图是（）3、下列多边形一定相似的为（）A、两个矩形B、两个菱形C、两个正方形D、两个平行四边形4、在Rt△ABC中，∠C=90，AB=4，AC=1，则tanA的值是（）A．154B．14C．15D．４5、等腰三角形的底边长为10cm。周长为36cm，那么底角的余弦等于().A.135B.1312C.1310D.1256、下图中几何体的主视图是（）.(A)(B)(C)(D)7、已知D、E为△ABC的边AB、AC上的两点，且AB=8，AC=6，AD=3，AE=4，则ADES∶ABCS=）A、1∶2B、1∶4C、1∶3D、2∶58、△ABC中，∠C=90°，∠A，∠B，∠C的对边分别是a，b，c，且c²-4ac+4a²=0，则sinA+cosA的值为（）A．131223..222BCD．29、长方体的主视图与左视图如图所示(单位：cm)，则其俯视图的面积是()A、12cm2．B、8cm2．C、6cm2．D、4cm2．左视图主视图234212A.B.C.D.231types:oneisthelackofcapacity,cannotbe.FullstoppedcuttingHou,somepeoplespiritslack,initsbitnotconspiracytoitspolitical,notDanthing,andnotsteward,andperfunctory,somecadresoninnovationdevelopmentsixbigindustry,andadvancesupplysidestructuralreform,andthreetoadropafillandPPPmode,newknowledgenotfamiliar,andnotlearning,andnotstudy,skillspanic,carriedoutworktonoavail,andloss,oninthere,byto.Second,lackofmotivation,don'twantto.Pipetighteningnow,notseekingprivileges,somecadresenthusiasmweakenedprogressiveconsciousness,anddothework,lookdry;someoftheolder,long-servingofficials,shiptodockatthestation,nolongerwillingtoendurehardshiptogettired,advanceintotheremainderState.Inparticular,somecadresdonotcleanallday,scary,absent-minded,innomoodforofficers.Threeactsasthelackofdare.Somecadresresponsibilityconsciousnessnotstrong,can'tplayhardballfacedifficultproblems,fearhitinterests,andoffend,fearworkerrors,andtakerisk,fearmediahype,andintohot,encounteredcontradictionsonaround,metproblemonhiding,seetroubleonpush,workuptimid,andtimid,andswayed,pursuesmoreathingthanlessathing,notseekingactivebutseekingnohad,eventryingtoavoidancethingavoidanceaccountability.Second,thedialecticalstrategy,positivechange.Nowsomeofficialsfortheofficersnottophenomenonhasbecomeaprominentissue,afewlocalandpoliticalecologyinasub-healthyorunhealthycondition,colleaguesofthecircle,andtherelationship,somepeople主要原因就是由于该中心所培养的硕士生是从地理类录取的学生里选取的，想挑战北大的可以试下这个方向，但题出的比较难，复试还要考城市规划现场设计，需要一定的绘画制图能力sit,stoodwatching,slack.Wecan'twait,drag,dialectical,andstriveforanearlyreverse.Tostrengtheneducationand