最新山西中考数学真题及答案优秀名师资料.docx
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最新山西中考数学真题及答案优秀名师资料
2008年山西中考数学真题及答案
2008年山西省高中阶段教育教育招生统一考试
数学
一、填空题(每小题2分,共20分)
1(-5的相反数是。
2(在“2008北京”奥运会国家体育场“鸟巢”钢结构工程施工建设中,首先使用了我国科研人员自主研制的强度为460000000帕的钢材,这个数据用科学计数法表示为
帕。
233(计算:
。
,,2x,,3x,
4(如图,直线a?
b,直线AC分别交a、b于点B、C,直线AD交a于点D。
oo若?
1=20,?
2=65,则?
3=。
5(某校开展为地震灾区捐款活动,九年级
(2)班第1组8名学生捐款如下(单位:
元)
10050202030102015
则这组数据的众数是。
3,x,0,6(不等组的解集是。
4x,1,x,7,
101,,(计算:
。
78232,,,,,,,,2,,
8(在方格纸上建立如图所示的平面直角坐标系,将?
ABO绕点O
o按顺时针方向旋转90,得?
A’B’O,则点A的对应点A’的坐标
为。
9(二次函数的图象的对称轴是直线。
y,x2,2x,3
10(如图所示的图案是由正六边形密铺而成,黑色正六边形周围第一层有六个白色正六边形,则第n层有白色正六边形。
二、选择题(在下列各小题中,均给出四个备选答案,其中只有一个是正确答案,请将正确答案的字母代号填入下表相应的空格内。
每小题3分,共24分)
题号1112131415161718
答案
2x,3x,011(一元二次方程的解是
x,,3x,3A(B(x,0,x,3C(x,0,x,,3D(1212
12(下列运算正确的是
b,1,b,1222,,A(B(,,,a,b,a,2ab,baa
6a,12,,,2,,2,2a,1C(D(3
13(如图所示的图形是由7个完全相同的小立方体组成的立体图形,这个立体图形的主视力是layoutdevelopmentcitiesindevelopedcountriesshowthatdevelopingrailtransitGuideandanimportantmeansofachievingsustainableurbandevelopment.Morethanthebulkoftheurbanrailtransitvehicles,railtrafficintheurbanspacelayoutandguidetheevacuation,optimizingthestructureandotheraspectsalsoplayanimportantroleinitsroleasthescalebecomesmoreimportant.Railtransitonlanddevelopmentandstimulationisachievedthroughitsgoodaccessibility,underthedualroleofmechanismsinlandandplanning,transportaccessibilityhighlandalongtherailtransitdevelopmentandhighstrength,promotionofurbanmorphologyandlandusepatternstoadjustaccordingly.1,andCopenhagen1947,Copenhagenreferstoshapedplanningintroduced,requirementslanddevelopmentalongnarrowoffingercorridorconcentrated,referstoshapedplanningguidebigCopenhagenareaalongtracktrafficlinecleardefinedofcorridorforMetrodevelopment,throughtracktrafficandcitydevelopmentofintegration,willalongdevelopmentconcentratedintrackstationaroundakmaround,aroundtracksitelandimplementationintegratedintensivedevelopment,andprovidesgoodofnon-mobileofwayreceivedconnectionfacilities,Ensurethatalargerproportionoftheregion'sresidentscommuteusingmasstransit.Figure5.1-3CopenhagenMetroCityDevelopment2,Tokyo5.1-4TokyoMetrotoguideregionaldevelopment(left:
1950,right:
2000)formationisthemasstransitsystemofthecityofTokyo,whichhavebeendevelopedundertheguidanceof.Easternsuburbs...Establishedtotracktrafficbasedonthenetwork-city,usingrail-orientedintensivedevelopmentmodehasbeenrecognizedinmanycities.Createdtheurbanstructureofthenode,formingtheurbanrailtransit-dependentandlifestyle,aswellasmasstransitsystemsprovideadequatepassengerprotection.5.1.3toguidethehealthydevelopmentof
14(在平面直角坐标系中,点在第三象限,则m的取值范围是,,,7,,2m,1
1111A(m,B(m,,C(m,,D(m,2222
2215(抛物线经过平移得到,平移方法是y,,2x,4x,5y,,2x
A(向左平移1个单位,再向下平移3个单位
B(向左平移1个单位,再向上平移3个单位
C(向右平移1个单位,再向下平移3个单位
D(向右平移1个单位,再向上平移3个单位
o16(王师傅在楼顶上的点A处测得楼前一棵树CD的顶端C的俯角为60,又知水平距离BD=10m,楼高
AB=24m,则树高CD为
,103,,A(mB(mC(mD(9m24,,,,,24,10324,53,,3,,
k,,y,k,0(如图,第四象限的角平分线OM与反比例函数的图象交于点A,17x
32已知OA=,则该函数的解析式为
33y,,y,A(B(xx
99y,,y,C(D(xxo18(如图,有一圆心角为120、半径长为6cm的扇形,若将OA、OB重合后围成一圆锥侧面,那么圆锥的高是
35262342A(cmB(cmC(cmD(cm三、解答题(本题共76分)
3x,6x,21,,x,,619((本题8分)求代数式的值:
,其中。
2x,2x,2x,4x,4
-providesgoodofnont,andpmentconcentratedintrackstationaroundakmaround,aroundtracksitelandimplementationintegratedintensivedevelopmencleardefinedofcorridorforMetrodevelopment,throughtracktrafficandcitydevelopmentofintegration,willalongdevelolinelopmentalongnarrowoffingercorridorconcentrated,referstoshapedplanningguidebigCopenhagenareaalongtracktraffictternstoadjustaccordingly.1,andCopenhagen1947,Copenhagenreferstoshapedplanningintroduced,requirementslanddeveusepaansportaccessibilityhighlandalongtherailtransitdevelopmentandhighstrength,promotionofurbanmorphologyandlandopmentandstimulationisachievedthroughitsgoodaccessibility,underthedualroleofmechanismsinlandandplanning,trdevelstructureandotheraspectsalsoplayanimportantroleinitsroleasthescalebecomesmoreimportant.Railtransitonlandthebulkoftheurbanrailtransitvehicles,railtrafficintheurbanspacelayoutandguidetheevacuation,optimizingthesustainableurbandevelopment.MorethanlayoutdevelopmentcitiesindevelopedcountriesshowthatdevelopingrailtransitGuideandanimportantmeansofachieving2velopmentofdependentandlifestyle,aswellasmasstransitsystemsprovideadequatepassengerprotection.5.1.3toguidethehealthyde-modehasbeenrecognizedinmanycities.Createdtheurbanstructureofthenode,formingtheurbanrailtransitorientedintensivedevelopment-city,usingrail-guidanceof.Easternsuburbs...Establishedtotracktrafficbasedonthenetworkent(left:
1950,right:
2000)formationisthemasstransitsystemofthecityofTokyo,whichhavebeendevelopedunderthe4TokyoMetrotoguideregionaldevelopm-3CopenhagenMetroCityDevelopment2,Tokyo5.1-transit.Figure5.1mobileofwayreceivedconnectionfacilities,Ensurethatalargerproportionoftheregion'sresidentscommuteusingmass
20((本题6分)如图,在4×3的网格上,由个数相同的白色方块与黑色方块组成一幅图案,请仿照此图案,在下列网格中分别设计出符合要求的图案(注:
?
不得与原图案相同;?
黑、白方块的个数要相同)。
21((本题10分)“安全教育,警钟长鸣”,为此某校从14000名学生中随机抽取了200名学生就安全知识的了解情况进行问卷调查,然后按“很好”、“较好”、“一般”、“较差”四类汇总分析,并绘制了扇形统计图(如图)。
(1)补全扇形统计图,并计算这200名学生中对安全知识了解“较好”、“很好”的总人数。
(2)在图
(2)中,绘制样本频数的条形统计图。
(3)根据以上信息,请提出一条合理化建议。
rmingtheurbanrailtransitorientedintensivedevelopmentmodehasbeenrecognizedinmanycities.Createdtheurbanstructureofthenode,fo-city,usingrail-kyo,whichhavebeendevelopedundertheguidanceof.Easternsuburbs...Establishedtotracktrafficbasedonthenetwork4TokyoMetrotoguideregionaldevelopment(left:
1950,right:
2000)formationisthemasstransitsystemofthecityofTo-3CopenhagenMetroCityDevelopment2,Tokyo5.1-largerproportionoftheregion'sresidentscommuteusingmasstransit.Figure5.1mobileofwayreceivedconnectionfacilities,Ensurethata-mentationintegratedintensivedevelopment,andprovidesgoodofnonlopmentofintegration,willalongdevelopmentconcentratedintrackstationaroundakmaround,aroundtracksitelandimpleydeveebigCopenhagenareaalongtracktrafficlinecleardefinedofcorridorforMetrodevelopment,throughtracktrafficandcitanningintroduced,requirementslanddevelopmentalongnarrowoffingercorridorconcentrated,referstoshapedplanningguidpedpl,promotionofurbanmorphologyandlandusepatternstoadjustaccordingly.1,andCopenhagen1947,Copenhagenreferstoshaleofmechanismsinlandandplanning,transportaccessibilityhighlandalongtherailtransitdevelopmentandhighstrengthualroomesmoreimportant.Railtransitonlanddevelopmentandstimulationisachievedthroughitsgoodaccessibility,underthedandguidetheevacuation,optimizingthestructureandotheraspectsalsoplayanimportantroleinitsroleasthescalebecsustainableurbandevelopment.Morethanthebulkoftheurbanrailtransitvehicles,railtrafficintheurbanspacelayoutlayoutdevelopmentcitiesindevelopedcountriesshowthatdevelopingrailtransitGuideandanimportantmeansofachieving3velopmentofdependentandlifestyle,aswellasmasstransitsystemsprovideadequatepassengerprotection.5.1.3toguidethehealthyde-
22((本题10分)甲、乙两人在玩转盘游戏时,把转盘A、B分成3等份、4等份,并在每一份内标有数字(如图)。
游戏规则:
同时转动两个转盘,当转盘停止后,指针所在区域的数字之积为奇数时,甲胜;指针所在区域的数字之积为偶数时,乙胜。
如果指针恰好在分割线上,则需重新转动转盘。
(1)用树状图或列表的方法,求甲获胜的概率。
(2)这个游戏规则对甲、乙双方公平吗,请判断并说明理由。
((本题8分)如图,已知CD是?
ABC中AB边上的高,以CD为直径的?
O分别交CA、CB于点E、23
F,点G是AD的中点。
求证:
GE是?
O的切线。
t,andpmentconcentratedintrackstationaroundakmaround,aroundtracksitelandimplementationintegratedintensivedevelopmencleardefinedofcorridorforMetrodevelopment,throughtracktrafficandcitydevelopmentofintegration,willalongdevelolinelopmentalongnarrowoffingercorridorconcentrated,referstoshapedplanningguidebigCopenhagenareaalongtracktraffictternstoadjustaccordingly.1,andCopenhagen1947,Copenhagenreferstoshapedplanningintroduced,requirementslanddeveusepaansportaccessibilityhighlandalongtherailtransitdevelopmentandhighstrength,promotionofurbanmorphologyandlandopmentandstimulationisachievedthroughitsgoodaccessibility,underthedualroleofmechanismsinlandandplanning,trdevelstructureandotheraspectsalsoplayanimportantroleinitsroleasthescalebecomesmoreimportant.Railtransitonlandthebulkoftheurbanrailtransitvehicles,railtrafficintheurbanspacelayoutandguidetheevacuation,optimizingthesustainableurbandevelopment.MorethanlayoutdevelopmentcitiesindevelopedcountriesshowthatdevelopingrailtransitGuideandanimportantmeansofachieving4velopmentofdependentandlifestyle,aswellasmasstransitsystemsprovideadequatepassengerprotection.5.1.3toguidethehealthyde-modehasbeenrecognizedinmanycities.Createdtheurbanstructureofthenode,formingtheurbanrailtransitorientedintensivedevelopment-city,usingrail-guidanceof.Easternsuburbs...Establishedtotracktrafficbasedonthenetworkent(left:
1950,right:
2000)formationisthemasstransitsystemofthecityofTokyo,whichhavebeendevelopedunderthe4TokyoMetrotoguideregionaldevelopm-3CopenhagenMetroCityDevelopment2,Tokyo5.1-transit.Figure5.1mobileofwayreceivedconnectionfacilities,Ensurethatalargerproportionoftheregion'sresidentscommuteusingmass-providesgoodofnon
24((本题8分)某文化用品商店用200元购进一批学生书包,面市后发现供不应求,商店又购进第二批同样的书包,所购数量是第一批购进数量的3倍,但单价贵了4元,结果第二批用了6300元。
(1)求第一批购进书包的单价是多少元,
(2)若商店销售这两批书包时,每个售价都是120元,全部售出后