2017 年杭州市中考试卷

合集下载

浙江省杭州市2017年中考语文真题试题(含标准解析)(已审阅)

浙江省杭州市2017年中考语文真题试题(含标准解析)(已审阅)

浙江省杭州市2017年中考语文真题试题一(30分,其中选择题每小题3分)1.下面文字中加点的字注音正确的一项是()漫步西子湖,如在诗中游。

看到燕子,白居易的诗“谁家新燕啄春泥”脱口而出,不禁.惊叹于燕子与春天的那份默契.;湖面波光潋滟,你自然吟诵起苏轼“淡妆浓抹总相宜”的名句;白堤桃柳相间.,花团锦簇,令人想到杭州诗人戴望舒在远方深情的思念,“春天,堤上繁花如锦幛,嫩柳枝折断有奇异的芬芳”。

丰厚的人文积淀.,增添了西湖的风雅与内蕴。

A.jìn qì jiànDìng B.jīn qiè jiànDìngC.jīn qìjiānD iàn D.jìn qièjiānD iàn【答案】C【解析】试题分析:本题考查对字音的辨析能力。

这里的“禁”应为“jīn ”,“契”应为“qì”,“间”应为“jiān”,“淀”应为“diàn”。

【考点定位】识记并正确书写现代汉语普通话常用字的字音。

能力层级为识记A。

2.下列各项中,没有错别字的一项是()A.他克尽职守,默默奉献三十年。

/请你把刚才说的话在说一遍。

/警察掉取监控录像仔细查看。

(摘自电视字幕)B.海鲜夜宵大排档,恭候光临!/阳光安装公司,竭诚为您服务。

/欧美时尚家具,送货到家。

(摘自招牌广告)C.红烧鸡腿、蜡肉烧笋、糖醋鱼块/凉绊黄瓜、香菇青菜、蒜泥菠菜/番茄旦汤、虾皮紫菜汤(摘自食堂菜单)D.梧桐树遮天蔽日,尤如一幅浓墨重彩的油画。

/最后拼搏阶段就是要像篮球冲满气、汽车加满油一样。

(摘自学生作文)【答案】B【考点定位】识记并正确书写现代常用规范汉字。

能力层级为识记A。

3.下列句子中加点的词语使用恰当的一项是()A.学生会组织校青年志愿者二十余人,利用双休日走上街头,发放宣传单,劝慰..行人遵守交通法规,文明出行。

B.听了著名建筑师的报告,王茜萌发了远大的夙愿..:将来要专攻建筑学,为老百姓设计建造美观而实用的房子。

2017浙江杭州中考试卷(解析版)

2017浙江杭州中考试卷(解析版)

2017年杭州市中考试卷一、(本大题共10个题,每小题3分,满分33分)1.(2017浙江杭州,1,3分)-22=( )A .-2B .-4C .2D .4 答案:B ,解析:根据有理数乘方的意义可得22=4,∴-22=-4.故选B .2.(2017浙江杭州,2,3分)太阳与地球的平均距离大约是150 000 000千米,数据150 000 000用科学计数法表示为( )A .1.5×108B .1.5×109C .0.15×109D .15×107 答案:A ,解析:150 000 000=1.5×100000000=1.5×108 .故选A .3.(2017浙江杭州,3,3分)如图,在△ABC 中,点D ,E 分别在边AB ,AC 上,DE ∥BC ,若BD =2AD ,则( )A .21=AB AD B .21=EC AE C .21=EC AD D .21=BC DEEDCB A答案:B ,解析:∵点D ,E 分别在边AB ,AC 上,DE ∥BC ,∴EC AE BD =AD ,∵BD =2AD ,故EC AE BD =AD =21.故选B .4.(2017浙江杭州,4,3分)|1+3|+|1-3|=( )A .1B .3C .2D .23答案:D ,解析:根据绝对值的性质,正数的绝对值等于它本身,负数的绝对值等于它的相反数.1+3>0,1-3<0,故|1+3|+|1-3|=1+3+3-1=23.故选D.5.(2017浙江杭州,5,3分)设x ,y ,c 是实数,( )A .若x =y ,则x +c =y -cB .若x =y ,则xc =ycC .若x =y ,则c y c x = D .若cyc x 32=,则2x =3y 答案:B ,解析:根据等式的基本性质1,若x =y ,则x +c =y +c ,故A 说法错误;根据等式的基本性质2若x =y ,则xc =yc ,B 成立;若x =y ,当c =0时,则 c y c x 、 均不成立,故C 说法错误,若c yc x 32=,则3cx =2cy.6.(2017浙江杭州,6,3分)若x +5>0,则( )A .x +1<0B .x -1<0C .5x<-1 D .-2x <12 答案:D ,解析:x +5>0,解得x >-5.x +1<0 ,解得x<-1,故A 不成立;x -1<0 ,解得x<1,B 不成立;5x<-1,解得x<-5,故C 不成立;-2x <12,解得x>-6,故D 成立.7.(2017浙江杭州,7,3分)某景点的参观人数逐年增加,据统计,2014年为10.8万人次,2016年为16.8万人次,设参观人次的平均年增长率为x ,则( )A .10.8(1+x )=16.8B .16.8(1-x )=10.8C .10.8(1+x )2=16.8D .10.8[(1+x )+(1+x )²]16.8答案:C ,解析:增长前的参观人数为10.8万人次,增长后的参观人数为16.8万人次,参观人次的平均年增长率为x ,参观人数为10.8万人次经两年后增长为10.8(1+x )2,所以可列方程为10.8(1+x )2=16.8 =80.故选择C .8.(2017浙江杭州,8,3分)如图,在Rt △ABC 中,∠ABC =90°,AB =2,BC =1.把△ABC 分别绕直线AB 和BC 旋转一周,所得几何体的底面圆的周长分别记作l 1,l 2,侧面积分别记作S 1,S 2,则( ) A .l 1:l 2=1:2,S 1:S 2=1:2 B .l 1:l 2=1:4,S 1:S 2=1:2 C .l 1:l 2=1:2,S 1:S 2=1:4 D .l 1:l 2=1:4,S 1:S 2=1:4CB A答案:A ,解析:△ABC 分别绕直线AB 旋转一周,所得几何体的底面圆的周长l 1=2π⋅BC =2π,侧面积分别记作S 1=2π⋅AC ,△ABC 分别绕直线BC 旋转一周,所得几何体的底面圆的周长l 2=2π⋅AB =4π,侧面积分别记作S 2=4π⋅AC ,故l 1:l 2=1:2,S 1:S 2=1:2.故选择A .9.(2017浙江杭州,9,3分)设直线x =1是函数y =ax ²+bx +c (a ,b ,c 是实数,且a <0)的图象的对称轴,( )A .若m >1,则(m -1)a +b >0B .若m >1,则(m -1)a +b <0C .若m <1,则(m -1)a +b >0D .若m <1,则(m -1)a +b <0答案:C ,解析:∵直线x =1是函数y =ax ²+bx +c (a ,b ,c 是实数,且a <0)的图象的对称轴,故x =-a2b=1,即2a +b =0,∵a <0,故2a <0,当m <1,则(m -1)a >0,即(m -1)a +b >0.故选择C .10.(2017浙江杭州,10,3分)如图,在△ABC 中,AB =AC ,BC =12,E 为AC 边的中点,线段BE 的垂直平分线交边BC 于点D ,设BD =x ,tan ∠ACB =y ,则( )A .x -y²=3B .2x -y²=9C .3x -y²=15D .4x -y²=21EDCBA答案:B ,解析:如图,过点A 作AM ⊥BC 于点M,过点E 作EN ⊥BC 于点N ,连接DE,故AM ∥EN ,BD =DE .又∵AB =AC ,∴CM =21BC =6,∵E 为AC 边的中点,AM ∥EN ,∴21AC CE CM CN ==,故CN =3,DN =12-x -3=9-x ;在Rt △CNE 中,tan ∠ACB =CNEN=y ,∴EN =3y ;又∵线段BE 的垂直平分线交边BC 于点D ,∴DE =BD =x ,在Rt △DNE 中,DE 2=DN 2+EN 2,即x 2=(9-x )2+(3y )2,化简得2x -y ²=9.故选B .二、填空题(本大题共6个题,每小题4分,满分24分)11.(2017浙江杭州,11,4分)数据2,2,3,4,5的中位数是________.答案:3,解析:找中位数的方法:把各数据按从小到大的顺序排列,位于最中间的一个数或两个数的平均数为中位数.将上述数据从小到大排列位为:2、2、3、4、5,位于最中间的一个数为3,故填3.12.(2017浙江杭州,12,3分)如图,AT 切⊙O 于点A ,AB 是⊙O 的直径,若∠ABT =40°,则∠ATB =________.OTBA答案:50°,解析:∵AC 是⊙O 的切线,∴∠TAB =90°,∵∠ABT =40°,∴∠ATB =50° .13.(2017浙江杭州,13,3分)一个仅装有球的不透明布袋里共有3个球(只有颜色不同),其中2个是红球,1个是白球,从中任意摸出一个球,记下颜色后放回,搅匀,再任意摸出一个球,则两次摸出都是红球的概率是_________. 答案:94,解析:本题考查的是简单随机事件概率的计算.画树状图如下:列表法如下:所以一共有9种情况,两次摸到红球的有4种情况,所以P 红=94.故填9414.(2017浙江杭州,14,3分)若1313--=⋅--m m m m m ,则m =__________.答案:3或-1,解析:当1=m 时,1313--=⋅--m m m m m ,则m =±1,因为m -1≠0,故m =-1;当m -3=0时,1313--=⋅--m m m m m ,则m =3,此时m -1≠0,∴m =3或-1.故填m =3或-1. 15.(2017浙江杭州,15,3分)如图,在Rt △ABC 中,∠BAC =90°,AB =15,AC =20,点D 在边AC 上,AD=5,DE ⊥BC 于点E ,连结AE ,则△ABE 的面积等于_______.EDCBA答案:78,解析:连接AE .在Rt △ABC 中,∠BAC =90°,DE ⊥BC 于点E ,∴∠BAC =∠CED =90°,∴△CDE ∽△CBA , ∴CB CD CA CE ==255-20,故CE =12,∴BE =25-12=13,∴△ABE 的面积=2513×150=78.故填78.16.(2017浙江杭州,16,3分)某水果点销售50千克香蕉,第一天售价为9元/千克,第二天降价为6元/千克,第三天再降为3元/千克.三天全部售完,共计所得270元,若该店第二天销售香蕉t 千克,则第三天销售香蕉________千克.(用含t 的代数式表示.)答案:30-21t ,解析:该店第三天销售香蕉x 千克,则第一天销售香蕉(50-x -t )千克,根据题意得9(50-x -t )+6t +3x =270,解这个关于x 的方程得x =30-21t.故填30-21t.三、解答题:(本大题共7个小题,满分66分.)17.(2017浙江杭州,17,6分)为了了解某校九年级学生的跳高水平,随机抽取该年级50名学生进行跳高测试,并把测试成绩绘制成如图所示的频数表和未完成的频数直方图(每组含前一个边界值,不含后一个边界值).(1)求a 的值,并把频数直方图补充完整;(2)该年级共有500名学生,估计该年级学生跳高成绩在1.29m (含1.29m )以上的人数.......思路分析:(1)由频数表可知各组数据频数之和等于50,可求得a 的值,由此补全频数直方图; (2)先求出样本中跳高成绩在1.29m (含1.29m )以上的人数.....比例,再用样本估计总体.解:(1)a =50-(8+12+10)=20; 补全频数分布直方图,如图 (2)约为:500×501020+=300(人).18.(2017浙江杭州,18,8分)在平面直角坐标系中,一次函数y =kx +b (k ,b 都是常数,且k ≠0)的图象经过点(1,0)和(0,2).⑴当-2<x ≤3时,求y 的取值范围;⑵已知点P (m ,n )在该函数的图象上,且m -n =4,求点P 的坐标.思路分析:(1)一次函数y =kx +b (k ,b 都是常数,且k≠0)的图象经过点(1,0)和(0,2),根据待定系数法可以确定一次函数表达式,由此确定k 的值,得出这个一次函数是一个减函数,从而将x 的值代入求出函数y 的取值范围.(2)将点p 的坐标代入函数表达式,从而得出一个关于m ,n 的二元一次方程组,解这个二元一次方程组,求出m ,n 的值,确定点P 的坐标. 解:(1)由题意知y =kx +2,因为图象过点(1,0),∴0=k +2,解得k =-2, ∴y =-2x +2.当x =-2时,y =6,当x =3时,y =-4, ∵k =-2<0,∴函数值y 随x 的增大而减小,∴-4≤y<6. (2)根据题意知,422⎩⎨⎧=-+-=n m m n 解得,22⎩⎨⎧-==n m∴点P 的坐标为(2,-2).19.(2017浙江杭州,19,8分)如图在锐角三角形ABC 中,点D ,E 分别在边AC ,AB 上,AG ⊥BC 于点G ,AF ⊥DE 于点F ,∠EAF =∠GAC .⑴求证:△ADE ∽△ABC ; ⑵若AD =3,AB =5,求AGAF的值. GFEDCBA思路分析:(1)先根据AF ⊥DE ,AG ⊥BC ,进一步推出∠AEF =∠C ,利用两角对应相等,两三角形相似,得出△ADE ∽△ABC ;(2)由△ADE ∽△ABC 可得出∠ADE =∠B ,从而△AFD ∽△AGC ,利用相似三角形对应边成比例求得AGAF的值. 解:(1)证明:∵AF ⊥DE 于点F ,AG ⊥BC 于点G ,∴∠AFE =90°,∠AGC =90°, ∴∠AEF =90°-∠EAF ,∠C =90°-∠GAC , 又∵∠EAF =∠GAC ,∴∠AEF =∠C ,又∵∠DAE =∠C ,∴△ADE ∽△ABC ; (2)∵△ADE ∽△ABC ;∴∠ADE =∠B , 又∵∠AFD =∠AGB =90°,∴△AFD ∽△AGC ;∴ABADAG AF =, ∵AD =3,AB =5,∴AG AF =53. 20.(2017浙江杭州,20,10分)在面积都相等的所有矩形中,当其中一个矩形的一边长为1时,它的另一边长为3.⑴设矩形的相邻两边长分别为x ,y . ①求y 关于x 的函数表达式; ②当y ≥3时,求x 的取值范围;⑵圆圆说其中有一个矩形的周长为6,方方说有一个矩形的周长为10,你认为圆圆和方方的说法对吗?为什么?思路分析:(1)①根据题意可知矩形的面积为3,利用矩形面积公式,直接得出x 、y 间的关系式;②当y ≥3时,求x 的取值范围;(2)设设矩形的周长为l ,相邻两边长分别为x ,21l -x,,就可以表示出矩形的面积,根据“矩形的面积等于3”建立方程,根据解的存在情况,有解则说法正确、否则说法错误. 解:(1)①由题意知xy =3,所以y =x3, 即y 关于x 的函数表达式为y =x3(x>0); ②当y =3时,x =1,所以当y≥3时,x 的取值范围为0<x≤1.(2)圆圆的说法不对,方方的说法对.理由如下: 设矩形的周长为l ,相邻两边长分别为x ,21l -x, 则x(21l -x )=3,即2x 2-lx +6=0, 因为△=l 2-48,当l =6时,△=-12<0, 所以不存在面积为3,周长为6的矩形, 所以圆圆的说法不对:当l =10时,△=52>0, 此时,矩形的相邻两边分别为2135+,213-5, 所以存在面积为3,周长为10的矩形, 所以方方的说法对.21.(2017浙江杭州,21,10分)如图,在正方形ABCD 中,点G 在对角线BD 上(不与点B ,D 重合),GE ⊥DC 于点E ,GF ⊥BC 于点F ,连结AG . ⑴写出线段AG ,GE ,GF 长度之间的数量关系,并说明理由;⑵若正方形ABCD 的边长为1,∠AGF =105°,求线段BG 的长.FGED CBA思路分析:连接GC ,可得出△ADG ≌△CDG ,得出AG =CG ,由四边形GFCE 是矩形得出GF =EC ,从而将AG ,GE ,GF 三者放同一个直角三角形中,利用勾股定理表示三者间的数量关系;(2)作AH ⊥BD 于点H ,可以得到△ABH 为等腰直角三角形,△AGH 为含30°角的直角三角形,而BG =BH +HG ,即可求解. 解:(1)证明:连接GC ,由正方形的性质知AD =CD ,∠ADG =∠CDG , 在△ADG 和△CDG 中,⎪⎩⎪⎨⎧=∠=∠=GD GD CDG ADG CD AD , ∴△ADG ≌△CDG , ∴AG =CG ,由题意知∠GEC =∠GFC =∠DCB =90°, ∴四边形GFCE 是矩形, ∴GF =EC .在Rt △GEC 中,根据勾股定理,得GC 2=GE 2+EC 2, ∴AG 2=GE 2+GF 2.(2)作AH ⊥BD 于点H ,由题意知∠AGB =60°,∠ABG =45°,∴ △ABH 为等腰直角三角形,△AGH 为含30°角的直角三角形, ∵AB =1,∴AH =BH =22,HG =66, ∴BG =22+66. 22.(2017浙江杭州,22,12分)在平面直角坐标系中,设二次函数y 1=(x +a )(x -a -1),其中a ≠0.⑴若函数y 1的图象经过点(1,-2),求函数y 1的表达式;⑵若一次函数y 2=ax +b 的图象与y 1的图象经过x 轴上同一点,探究实数a ,b 满足的关系式; ⑶已知点P (x 0,m )和Q (1,n )在函数y 1的图象上,若m <n ,求x 0的取值范围.思路分析:(1)二次函数y 1=(x +a )(x -a -1)的图象经过点(1,-2),利用待定系数法可以确定函数的表达式;(2)二次函数y 1=(x +a )(x -a -1)与x 轴的交点坐标分别为(-a,0)和(a +1,0),然后分情况讨论一次函数函数y 2=ax +b 的图象与y 1的共点,并将点的坐标代入到一次函数中去;(3)根据题意可得函数y 1=x 2-x -a 2-a ,对称轴为直线x =21,而点Q 关于直线x =21的对称点为(0,n ),二次项系数为1,故图象开口向上,若m <n ,则0<x 0<1.解:(1)由题意知(1+a)(1-a -1)=-2,即a(a +1)=2, ∵y 1=x 2-x -a(a +1),∴y 1=x 2-x -2.(2)由题意知,函数y 1的图象与x 轴交于点(-a,0)和(a +1,0), 当y 2的图象过(-a,0)时,得a 2-b =0; 当y 2的图象过(a +1,0)时,得a 2+a +b =0. (3)由题意知,函数y 1的图象的对称轴为直线x =21, ∴点Q (1,n )与(0,n )关于直线x =21对称. ∵函数y 1的图象开口向上,∴当m <n 时,0<x 0<123.(2017浙江杭州,23,12分)如图,已知△ABC 内接于⊙O ,点C 在劣弧AB 上(不与点A ,B 重合),点D 为弦BC 的中点,DE ⊥BC ,DE 与AC 的延长线交于点E ,射线AO 与射线EB 交于点F ,与⊙O 交于点G ,设∠GAB =ɑ,∠ACB =β,∠EAG +∠EBA =γ,⑴点点同学通过画图和测量得到以下近似数据:猜想:β关于ɑ的函数表达式,γ关于ɑ的函数表达式,并给出证明: ⑵若γ=135°,CD =3,△ABE 的面积为△ABC 的面积的4倍,求⊙O 半径的长.FA思路分析:(1)根据表格数据可以直接得出①β=a +90°,②γ=180°-a.连接CG ,由AG 是直径得出∠ACG =90°,利用DE 垂直平分BC ,可得出∠EBC =∠ECB ,∠BED =∠CED . ①由同弧所对的圆周角相等,可得∠BAG =∠BCG ,由此得出β=a +90°;②∠ACG =90°,DE ⊥BC ,可知,∠BCG +∠BCE =∠CED +∠BCE ,即∠BCG =∠CED ,进一步可以推出γ=180°-a.(2)因为γ=135°,所以a =45°,β=135°,可得出△ECB 是等腰直角三角形,从而求出BE 、CE 的长,△ABE 的面积为△ABC 的面积的4倍,故AE :AC =4:1,求出AB 的长,连接BG ,利用直角所对的圆周角等于90°,构建Rt △ABG ,得出⊙O 半径的长.解:(1)结论如下:①β=a +90°,②γ=180°-a.连接CG ,∵AG 是直径,∴∠ACG =90°, ∵DE 垂直平分BC ,∴EB =EC , ∴∠EBC =∠ECB ,∠BED =∠CED . ①β=a +90°的证明如下:∵∠BAG =∠BCG ,∴β=∠BCG +∠ACG =∠BAG +∠ACG =a +90°, 即β=a +90°. ②γ=180°-a 的证明如下: ∵∠ACG =90°,DE ⊥BC , ∴∠BCG =∠CED ,∴∠BEC =2a ,∴γ=∠EAG +∠EBA =∠BAG +∠EAB +∠EBA =∠BAG +(180°-∠BEC ) =180°-a. 即γ=180°-a.(2)∵γ=135°,∴a =45°,β=135°,∴∠ECB =∠EBC =45°,∴△ECB 是等腰直角三角形, 又∵CD =3,∴BC =6, ∴CE =BE =23,∵△ABE 的面积为△ABC 的面积的4倍,∴AE :AC =4:1, ∴AE =42,在Rt △ABE 中,AB =22BE AE =52,连接BG ,∵AG 是直径,∴∠ABG =90°,在Rt △ABG 中,∠BAG =a =45°, ∴AG =2AB =10, ∴⊙O 半径的长为5.。

浙江省杭州市2017年中考语文真题试题(含解析)

浙江省杭州市2017年中考语文真题试题(含解析)

浙江省杭州市2017年中考语文真题试题一(30分,其中选择题每小题3分)1.下面文字中加点的字注音正确的一项是()漫步西子湖,如在诗中游。

看到燕子,白居易的诗“谁家新燕啄春泥”脱口而出,不禁.惊叹于燕子与春天的那份默契.;湖面波光潋滟,你自然吟诵起苏轼“淡妆浓抹总相宜”的名句;白堤桃柳相间.,花团锦簇,令人想到杭州诗人戴望舒在远方深情的思念,“春天,堤上繁花如锦幛,嫩柳枝折断有奇异的芬芳”。

丰厚的人文积淀.,增添了西湖的风雅与内蕴。

A.jìn qì jiànDìng B.jīn qiè jiànDìngC.jīn qìjiānD iàn D.jìn qièjiānD iàn【答案】C【解析】试题分析:本题考查对字音的辨析能力。

这里的“禁”应为“jīn ”,“契”应为“qì”,“间”应为“jiān”,“淀”应为“diàn”。

【考点定位】识记并正确书写现代汉语普通话常用字的字音。

能力层级为识记A。

2.下列各项中,没有错别字的一项是()A.他克尽职守,默默奉献三十年。

/请你把刚才说的话在说一遍。

/警察掉取监控录像仔细查看。

(摘自电视字幕)B.海鲜夜宵大排档,恭候光临!/阳光安装公司,竭诚为您服务。

/欧美时尚家具,送货到家。

(摘自招牌广告)C.红烧鸡腿、蜡肉烧笋、糖醋鱼块/凉绊黄瓜、香菇青菜、蒜泥菠菜/番茄旦汤、虾皮紫菜汤(摘自食堂菜单)D.梧桐树遮天蔽日,尤如一幅浓墨重彩的油画。

/最后拼搏阶段就是要像篮球冲满气、汽车加满油一样。

(摘自学生作文)【答案】B【考点定位】识记并正确书写现代常用规范汉字。

能力层级为识记A。

3.下列句子中加点的词语使用恰当的一项是()A.学生会组织校青年志愿者二十余人,利用双休日走上街头,发放宣传单,劝慰..行人遵守交通法规,文明出行。

B.听了著名建筑师的报告,王茜萌发了远大的夙愿..:将来要专攻建筑学,为老百姓设计建造美观而实用的房子。

2017年杭州市中考数学试卷

2017年杭州市中考数学试卷

2017年杭州市中考数学试卷2017年杭州市中考数学试卷一、选择题(共10小题;共50分)1. −22=( )A. −2B. −4C. 2D. 42. 太阳与地球的平均距离大约是150000000千米,数据150000000用科学记数法表示为( )A. 1.5×108B. 1.5×109C.0.15×109 D. 15×1073. 如图在△ABC中,点D,E分别在边AB,AC上,DE∥BC,若BD=2AD,则( )A. ADAB =12B. AEEC=12C. ADEC=12D. DEBC=124. ∣1+√∣+∣1−√∣=( )A. 1B. √C. 2D. 2√5. 设x,y,c是实数,( )第2页(共19 页)A. 若x=y,则x+c=y−cB. 若x=y,则xc=ycC. 若x=y,则xc =ycD. 若x2c=y3c,则2x=3y6. 若x+5>0,则( )A. x+1<0B. x−1<0C. x5<−1D. −2x<127. 某景点的参观人数逐年增加,据统计,2014年为10.8万人次,2016年为16.8万人次,设参观人次的平均年增长率为x,则( )A. 10.8(1+x)=16.8B. 16.8(1−x)=10.8C. 10.8(1+x)2=16.8D. 10.8[(1+x)+(1+x)2]=16.88. 如图,在Rt△ABC中,∠ABC=90∘,AB=2,BC=1.把△ABC分别绕直线AB和BC旋转一周,所得几何体的底面圆的周长分别记作l1,l2,侧面积分别记作S1,S2,则( )第3页(共19 页)第4页(共19 页)第5页(共19 页)A. x −y 2=3B. 2x −y 2=9C. 3x −y 2=15D. 4x −y 2=21二、填空题(共6小题;共30分)11. 数据 2,2,3,4,5 的中位数是 .12. 如图,AT 切 ⊙O 于点 A ,AB 是 ⊙O 的直径,若 ∠ABT =40∘,则 ∠ATB = .13. 一个仅装有球的不透明布袋里共有 3 个球(只有颜色不同),其中 2 个是红球,1 个是白球,从中任意摸出一个球,记下颜色后放回,搅匀,再任意摸出一个球,则两次摸出都是红球的概率是.14. 若m−3m−1⋅∣m∣=m−3m−1,则m=.15. 如图,在△ABC中,∠BAC=90∘,AB=15,AC=20,点D在边AC上,AD=5,DE⊥BC于点E,连接AE,则△ABE的面积等于.16. 某水果店销售50千克香蕉,第一天售价为9元/千克,第二天降为6元/千克,第三天再降为3元/千克.三天全部售完,共计所得270元,若该店第二天销售香蕉t千克,则第三天销售香蕉千克.(用含t的代数式表示)三、解答题(共7小题;共91分)17. 为了了解某校九年级学生的跳高水平,随机抽取该年级50名学生进行跳高测试,并把测试成绩绘制成如图所示的频数分布表和未完成的第6页(共19 页)频数分布直方图(每组含前一个边界值,不含后一个边界值).某校九年级50名学生跳高测试成绩的频数分布表:组别(m)频数1.09∼1.1981.19∼1.29121.29∼1.39a1.39∼1.4910(1)求a的值,并把频数分布直方图补充完整;(2)该年级共有500名学生,估计该年级学生跳高成绩在1.29m(含1.29m)以上的人数.18. 在平面直角坐标系中,一次函数y=kx+b(k,b都是常数,且k≠0)的图象经过点(1,0)和(0,2).第7页(共19 页)(1)当−2<x≤3时,求y的取值范围.(2)已知点P(m,n)在该函数的图象上,且m−n=4,求点P的坐标.19. 如图在锐角△ABC中,点D,E分别在边AC,AB上,AG⊥BC于点G,AF⊥DE于点F,∠EAF=∠GAC.(1)求证:△ADE∽△ABC;的值.(2)若AD=3,AB=5,求AFAG20. 在面积都相等的所有矩形中,当其中一个矩形的一边长为1时,它的另一边长为3.(1)设矩形的相邻两边长分别为x,y.①求y关于x的函数表达式;②当y≥3时,求x的取值范围;(2)圆圆说其中有一个矩形的周长为6,方方说有一个矩形的周长为10,你认为圆圆和方方的说法对吗?为什么?第8页(共19 页)21. 如图,在正方形ABCD中,点G在对角线BD上(不与点B,D重合),GE⊥DC于点E,GF⊥BC于点F,连接AG.(1)写出线段AG,GE,GF长度之间的数量关系,并说明理由;(2)若正方形ABCD的边长为1,∠AGF= 105∘,求线段BG的长.22. 在平面直角坐标系中,设二次函数y1=(x+a)(x−a−1),其中a≠0.(1)若函数y1的图象经过点(1,−2),求函数y1的表达式;(2)若一次函数y2=ax+b的图象与y1的图象经过x轴上同一点,探究实数a,b满足的关系式;(3)已知点P(x0,m)和Q(1,n)在函数y1的图象上,若m<n,求x0的取值范围.第9页(共19 页)23. 如图,已知△ABC内接于⊙O,点C在劣弧AB上(不与点A,B重合),点D为弦BC的中点,DE⊥BC,DE与AC的延长线交于点E,射线AO与射线EB交于点F,与⊙O交于点G,设∠GAB=α,∠ACB=β,∠EAG+∠EBA=γ.(1)点点同学通过画图和测量得到以下近似数据:α30∘40∘50∘60∘β120∘130∘140∘150∘γ150∘140∘130∘120∘猜想:β关于α的函数表达式,γ关于α的函数表达式,并给出证明;(2)若γ=135∘,CD=3,△ABE的面积为△ABC的面积的4倍,求⊙O半径的长.第10页(共19 页)答案第一部分1. B2. A3. B4. D5. B6. D7. C8. A9. C 10. B第二部分11. 312. 50∘13. 4914. −1或315. 7816. 30−t2第三部分17. (1)a=50−8−12−10=20,a的值是20.补全频数分布直方图如图所示.(2) 500×20+1050=500×35=300(名). 答:该年级学生跳高成绩在 1.29 m 以上的人数为300 名. 18. (1) 已知一次函数解析式为:y =kx +b (k ≠0),将点 (1,0),(0,2) 分别代入,得:{0=k +b,2=b,解得:{k =−2,b =2,所以 y =−2x +2.当 −2<x ≤3 时,有 −4≤−2x +2<6,即 −4≤y <6.(2) 因为点 P (m,n ) 在该函数图象上,则有 {n =−2m +2,m −n =4,解得:{m =2,n =−2,所以点 P 的坐标为 (2,−2).19. (1) ∵ 在 △ABC 中,AG ⊥BC 于点 G ,AF ⊥DE 于点 F ,∴ ∠AFE =∠AGC =90∘,∴在△AEF和△ACG中,∠AFE=∠AGC=90∘,∠EAF=∠GAC,∴△AEF∽△ACG.∴∠AEF=∠C.在△ADE和△ABC中,∠AED=∠C,∠EAD=∠CAB,∴△ADE∽△ABC.(2)由(1)知,△ADE∽△ABC,∴ADAB =AEAC=35,又∵△AEF∽△ACG,∴AFAG =AEAC=35.20. (1)①由题意可得:矩形面积为S=1×3=3,即xy=3,∴y=3x(x>0).②当y≥3即3x≥3时,有0<x≤1,∴x的取值范围是0<x≤1.(2)圆圆说的不对,方方说的对.理由:按照圆圆的说法,若其中一个矩形周长为6,则有 {2(x +y )=6, ⋯⋯①xy =3, ⋯⋯②由 ① 得:y =3−x, ⋯⋯③将 ③ 代入 ② 得:x (3−x )=3,即 −x 2+3x −3=0,∵ 该方程 Δ=32−4×(−1)×(−3)=9−12=−3<0,∴ 此方程无解,∴ 不存在这样的矩形,∴ 圆圆说的不对,同理,按照方方的说法,若其中一个矩形周长为 10,有 {2(x +y )=10,xy =3,解得:x =5±√132,∴ 方方说的对.21. (1) AG 2=GE 2+GF 2.证:连接 CG .∵ 四边形 ABCD 为正方形,∴∠ABG =∠CBG =45∘,BA =BC , 在 △ABG 与 △CBG 中,{BA =BC,∠ABG =∠CBG,BG =BG,∴△ABG ≌△CBG (SAS ),∴AG =CG ,又 ∵GE ⊥DC ,∠C =90∘,∴ 四边形 GECF 为矩形,∴GE =FC ,FC 2+GF 2=GC 2, ∴AG 2=GE 2+GF 2.(2) 过点 A 作 AM ⊥BD 于 M ,∵GF ⊥BC ,∴△BFG 为等腰直角三角形,∴∠BGF =45∘.又 ∵∠AGF =105∘,∴∠AGB =105∘−45∘=60∘.∵△ABM 为等腰直角三角形,AB =1,∴AM=BM=√22,∴MG=AMtan∠AGM =√22√3=√66,∴BG=BM+MG=√22+√66=3√2+√66.22. (1)把x=1,y=−2代入y1=(x+a)(x−a−1)中,得:a(1+a)=2,∵y1=x2−x−a(a+1),∴y1=x2−x−2.(2)令y1=(x+a)(x−a−1)=0,解得:x1=−a,x2=a+1,①当一次函数经过(−a,0)时,把x=−a,y=0代入y2=ax+b得:b=a,②当一次函数经过(a+1,0)时,把x=a+1,y=0代入y2=ax+b得:b=−a2−a.(3)y1=(x+a)(x−a−1)的对称轴为:直线x0=−a+a+12=12,m<n,抛物线开口向上可知:∣∣x0−12∣∣<(1−12),∴0<x0<1.23. (1) ① β=90∘+α,γ=180∘−α. 证明:如图 1,连接 BG ,∵ B ,C ,A ,G 四点共圆,∴ ∠BGA =180∘−β.又 ∵ AG 为直径,∴ ∠ABG =90∘,∴ ∠BGA +∠BAG =90∘,即 (180∘−β)+α=90∘,∴ β=90∘+α.② D 为弦 BC 的中点,DE ⊥BC , 在 △BDE 和 △CDE 中,{BD =CD,∠BDE =∠CDE,ED =ED,∴ △BDE ≌△CDE ,∴ ∠EBC =∠ECB =180∘−β. ∵ ∠CBA +∠CAB =∠ECB ,∴γ=∠EAG+∠EBA=α+∠CAB+∠CBA+∠EBC=α+∠ECB+∠EBC=α+(180∘−β)+(180∘−β)=360∘+α−2β,又∵β=90∘+α,∴γ=360∘+α−2(90∘+α)=180∘−α,即γ=180∘−α.(2)如图2,连接BG.Array∵γ=135∘,∴α=45∘,β=45∘,∠AGB=45∘,∴△ECD和△ABG为等腰直角三角形.又∵S△ABE=4S△ABC,∴AE=4AC,∴EC=3AC.设AC=x,∴EC=3x.又∵CD=3,∴√2CD=EC=3x,∴x=√2,∴AE=4√2.又∵BE=EC,∠AEB=90∘,∴AB=√BE2+AE2=5√2,∴AG=√2AB=5√2×√2=10,∴r=5.。

【真题】2017年杭州市中考数学试卷含答案解析

【真题】2017年杭州市中考数学试卷含答案解析

2017年浙江省杭州市中考数学试卷参考答案与试题解析选择题一.1.-22=()A.-2B.-4C.2D.4【分析】根据矗的乘方的运算法则求解.【解答】解:-22=-4,故选B.【点评】本题考查了幕的乘方,解答本题的关键是掌握幕的乘方的运算法则.2.太阳与地球的平均距离大约是150000000千米,数据150000000用科学记数法表示为()A. 1.5X108B. 1.5X109C.0.15X109D.15X107【分析】科学记数法的表示形式为aX10n的形式,其中1W a|<10,n为整数.确定n的值时,要看把原数变成a时,小数点移动了多少位,n的绝对值与小数点移动的位数相同.当原数绝对值>1时,n是正数;当原数的绝对值VI时,n 是负数.【解答】解:将150000000用科学记数法表示为:1.5X108.故选A.【点评】此题考查了科学记数法的表示方法.科学记数法的表示形式为aX10n 的形式,其中lW|a|V10,n为整数,表示时关键要正确确定a的值以及n的值.3.如图,在AABC中,点D,E分别在边AB,AC上,DE//BC,若BD=2AD,则()B CA.业二B. c.业二 D.匹匚AB2EC2EC2BC2【分析】根据题意得出△A DE-AABC,进而利用已知得出对应边的比值.【解答】VDE//BC,A AADE^AABC,VBD=2AD,.AD_DE_AE_1AB BC AC P贝禅=1,妁EC2.LA,C,D选项错误,B选项正确,故选:B.【点评】此题主要考查了相似三角形的判定与性质,正确得出对应边的比是解题关键.4.|1+归+|1-归=()A.1B.75C.2D.2扼【分析】根据绝对值的性质,可得答案.【解答】解:原式i+/5W^t=2V5,故选:D.【点评】本题考查了实数的性质,利用差的绝对值是大数减小数是解题关键.5.设x,y,c是实数,()A、若x=y,贝!J x+c=y-c B.若x=y,贝!J xc=ycC.若乂=),贝I]x=^D.若看矣」则2x=3yc c2c3c【分析】根据等式的性质,可得答案.【解答】解:A、两边加不同的数,故A不符合题意;B、两边都乘以c,故B符合题意;C、c=0时,两边都除以c无意义,故C不符合题意;D、两边乘以不同的数,故D不符合题意;故选:B.【点评】本题考查了等式的性质,熟记等式的性质并根据等式的性质求解是解题关.6.若x+5>0,则()A.x+l<0B.x-1<OC.普<-lD.-2x<125【分析】求出已知不等式的解集,再求出每个选项中不等式的解集,即得出选项.【解答】解:...x+5>0,Ax>-5,A、根据x+l<0得出xV-1,故本选项不符合题意;B、根据x-1<0得出x<l,故本选项不符合题意;C、根据普<-1得出xV5,故本选项符合题意;□D、根据-2x<12得出x>-6,故本选项不符合题意;故选C.【点评】本题考查了不等式的性质,能正确根据不等式的性质进行变形是解此题的关键.7.某景点的参观人数逐年增加,据统计,2014年为10.8万人次,2016年为16.8万人次.设参观人次的平均年增长率为x,则()A.10.8(1+x)=16.8B.16.8(1- x)=10.8C.10.8(1+x)2=16.8D.10.8[(1+x)+(1+x)2]=16.8【分析】设参观人次的平均年增长率为x,根据题意可得等量关系:10.8万人次X(1+增长率)2=16.8万人次,根据等量关系列出方程即可.【解答】解:设参观人次的平均年增长率为x,由题意得:10.8(1+x)2=16.8,故选:C.【点评】本题主要考查了由实际问题抽象出一元二次方程,若设变化前的量为a,变化后的量为b,平均变化率为x,则经过两次变化后的数量关系为a(1 ±x)2=b.8.如图,在RtAABC中,ZABC=90°,AB=2,BC=1.把AABC分别绕直线AB和BC旋转一周,所得几何体的地面圆的周长分别记作li,12,侧面积分别记作Si,S2,则()B CA.11:板=1:2,Si:S2=l:2B.1]:12=1:4,S1:S2=l:2C.li:h=l:2,Si:$2=1:4D.li:12=1:4,Si:,2=1:4【分析】根据圆的周长分别计算11,12,再由扇形的面积公式计算S],S2,求比值即可.【解答】解:•.•11=2兀XBC=2兀,h=2兀X AB=4兀,「.li:12=1:2,S1=*X2兀X据=届1,S2=-|-X4兀X寸亏=2、切:,/.Si:S2=l:2,故选A.【点评】本题考查了圆锥的计算,主要利用了圆的周长为2兀r,侧面积=*lr求解是解题的关键.9.设直线x=l是函数y=ax2+bx+c(a,b,c是实数,且aVO)的图象的对称轴,()A.若m>l,贝!J(m-1)a+b>0B.若m>1,贝U(m-1)a+b<0C.若m<l,贝!J(m-1)a+b>0D.若m<l,贝!J(m-1)a+b<0【分析】根据对称轴,可得b=-2a,根据有理数的乘法,可得答案.【解答】解:由对称轴,得(m-1)a+b=ma-a-2a=(m-3)a当m<l时,(m-3)a>0,故选:C.【点评】本题考查了二次函数图象与系数的关系,利用对称轴得出b=-2a是解题关键.10,如图,在AABC中,AB=AC,BC=12,E为AC边的中点,线段BE的垂直平分线交边BC于点D.设BD=x,tanZACB=y,则()A.x- y2=3B.2x-y2=9C.3x- y2=15D.4x-y2=21【分析】过A作AQ±BC于Q,过E作EM±BC于M,连接DE,根据线段垂直平分线求出DE=BD=x,根据等腰三角形求出BD=DC=6,求出CM=DM=3,解直角三角形求出EM=3y,AQ=6y,在RtADEM中,根据勾股定理求出即可.【解答】解:过A作AQ1BC于Q,过E作EM±BC于M,连接DE,VBE的垂直平分线交BC于D,BD=x,.♦.BD=DE=x,VAB=AC,BC=12,tanZACB=y,EM_AQ_BQ=CQ=6,MC CQ7VAQ1BC, EM±BC,.♦.AQ〃EM,•.•E为AC中点,.•.CM=QM=|CQ=3,.♦.EM=3y,/.DM=12-3-x=9-x,在RtAEDM中,由勾股定理得:x2=(3y)2+(9-x)2,即2x-y2=9,故选B.【点评】本题考查了线段垂直平分线性质,等腰三角形的性质,勾股定理,解直角三角形等知识点,能正确作出辅助线是解此题的关键.填空题二.11.数据2,2,3,4,5的中位数是3.【分析】根据中位数的定义即中位数要把数据按从小到大的顺序排列,位于最中间的一个数(或两个数的平均数)为中位数,即可求出答案.【解答】解:从小到大排列为:2,2,3,4,5,位于最中间的数是3,则这组数的中位数是3.故答案为:3.【点评】本题考查了中位数,注意找中位数的时候一定要先排好顺序,然后再根据奇数和偶数个来确定中位数,如果数据有奇数个,则正中间的数字即为所求,如果是偶数个则找中间两位数的平均数.12.如图,AT切OO于点A,AB是。

2017年浙江省杭州市中考语文试卷-答案

2017年浙江省杭州市中考语文试卷-答案

浙江省杭州市2017年初中毕业升学文化考试语文答案解析一、1.【答案】C【解析】“禁”是多音字,表示“忍住,禁受”时读“jīn”;表示“不允许”时读“jìn”。

根据语境,此处读“jīn”。

“契”读“qì”。

“间”是多音字,在这里读“jiàn”。

“淀”的读音不能读偏旁,应读“diàn”。

2.【答案】B【解析】A.克尽职守——格尽职守,在——再,掉取——调取;C.蜡肉——腊肉,凉绊——凉拌,旦汤——蛋汤;D.尤如——犹如,冲满气——充满气。

3.【答案】D【解析】A.劝慰:劝解安慰。

根据语境,没有安慰的意思。

B.夙愿:指一向怀有的愿望。

不合语境。

C.废寝忘食:顾不得睡觉和吃饭,形容非常专心努力,是褒义词。

不合语境。

D.肃然起敬:形容产生严肃敬仰的感情。

符合语境。

4.【答案】C【解析】A.成分残缺,应在“是一种”前面加上“它”,即指“多功能电话手表”。

B.缺少主语,应去掉“随着”或“使得”。

D.搭配不当,贝能“倾听心跳”,不能“倾听闲难”。

【考点】辨析、修改病句。

5.【答案】(1)教然后知困(2)万里赴戎机(3)燕然未勒归无计(4)蜡炬成灰泪始干(5)无可奈何花落去似曾相识燕归来【解析】直接默写即可。

6.【答案】(1)《饮酒》《爱莲说》《桃花源记》(2)范爱农否定(3)A:小福子影响:虎妞去世后,小福子成了祥子好好活下去的希望。

小福子上吊自杀后,祥子所有的希望都破灭了。

他失去了生活的勇气,开始厌恶劳作,吃喝嫖赌,到处骗钱,最后沦为“城市垃圾”。

【解析】(1)陶渊明《饮酒》中“采菊东篱下,悠然见南山”,写出了陶渊明以菊为知己;周敦顾世称“濂溪先生”,表现他喜爱莲花的文章是《爱莲说》;桃花源中的人因避秦时之乱躲到了桃花源,文章是《桃花源记》。

(2)在《范爱农》中鲁迅先生表达了对同乡旧友的思念,鲁迅先生对封建孝道持否定态度。

(3)这里的“她”是小福子,小福子对祥子的影响非常大,是虎妞去世后祥子的精神依托,小福子上吊自杀成为祥子变化的转折点。

2017年浙江省杭州市中考数学试卷及答案

2017年浙江省杭州市中考数学试卷及答案

数学试卷 第1页(共18页) 数学试卷 第2页(共18页)绝密★启用前浙江省杭州市2017年初中毕业升学文化考试数学 .............................................................. 1 浙江省杭州2017年初中毕业升学文化考试数学答案解析 .. (5)浙江省杭州市2017年初中毕业升学文化考试数学本试卷满分120分,考试时间100分钟.参考公式:二次函数22(0)y ax bx c a =++≠图像的顶点坐标公式:24(,)24b ac b a a--第Ⅰ卷(选择题 共30分)一、选择题(本大题共10小题,每小题3分,共30分.在每小题给出的四个选项中,只有一项是符合题目要求的) 1.22-=( ) A .2-B .4-C .2D .4 2.太阳与地球的平均距离大约是150000 000千米,数据150000 000用科学记数法表示为( ) A .81.510⨯ B .91.510⨯ C .90.1510⨯D .71510⨯3.如图,在ABC △中,点D ,E 分别在边AB ,AC 上,DE BC ∥,若2BD AD =,则( )A .12AD AB =B .12AE EC = C .12AD=D .12DE BC =4.11|=( ) A .1BC .2D . 5.设x ,y ,c 是实数,( )A .若x y =,则x c y c +=-B .若x y =,则xc yc =C .若x y =,则x y c c= D .若23x yc c=,则23x y = 6.若50x +>,则( ) A .10x +< B .10x -< C .15x -<D .212x -<7.某景点的参观人数逐年增加,据统计,2014年为10.8万人次,2016年为16.8万人次.设参观人次的平均年增长率为x ,则( )A .10.8168()1.x +=B .16.8108()1.x -=C .210.8116.8()x +=D .2[()(10.81116.)]8x x =+++8.如图,在Rt ABC △中,90ABC ∠=,2AB =,1BC =.把ABC △分别绕直线AB 和BC 旋转一周,所得几何体的地面圆的周长分别记作1l ,2l ,侧面积分别记作1S ,2S ,则 ( ) A .12:1:2l l =,1212S S =:: B .12:1:4l l =,1212S S =:: C .12:1:2l l =,1214S S =:: D .12:1:4l l =,1214S S =::9.设直线1x =是函数²y ax bx c =++(,,a b c 是实数,且0a <)的图象的对称轴, ( ) A .若1m >,则()10m a b -+> B .若1m >,则()10m a b -+< C .若1m <,则()10m a b ++>D .若1m <,则()10m a b ++<10.如图,在ABC △中,AB AC =,12BC =,E 为AC 边的中点,线段BE 的垂直平分线交边BC 于点D ,设BD x =,tan ACB y ∠=,则 ( ) A .23x y -= B .229x y -= C .2315x y -= D .2421x y -=第Ⅱ卷(非选择题 共90分)毕业学校_____________ 姓名________________ 考生号________________ ________________ _____________-------------在--------------------此--------------------卷--------------------上--------------------答--------------------题--------------------无--------------------效----------------数学试卷 第3页(共18页) 数学试卷 第4页(共18页)二、填空题(本大题共6小题,每小题4分,共24分.请把答案填写在题中的横线上) 11.数据2,2,3,4,5的中位数是 .12.如图,AT 切O 于点A ,AB 是O 的直径.若40ABT ∠=,则ATB ∠= .13.一个仅装有球的不透明布袋里共有3个球(只有颜色不同),其中2个是红球,1个是白球.从中任意摸出一个球,记下颜色后放回,搅匀,再任意摸出一个球,则两次摸出都是红球的概率是 .14.若3311m m m m m --=--,则m = . 15.如图,在Rt ABC △中,90BAC ∠=,=15AB ,20AC =,点D 在边AC 上,5AD =,DE BC ⊥于点E ,连接AE ,则ABE △的面积等于 .16.某水果店销售50千克香蕉,第一天售价为9元/千克,第二天降价为6元/千克,第三天再降为3元/千克.三天全部售完,共计所得270元.若该店第二天销售香蕉t 千克,则第三天销售香蕉千克.(结果用含t 的代数式表示) 三、解答题(本大题共7小题,共66分.解答应写出必要的文字说明、证明过程或演算步骤)17.(本小题满分6分)为了了解某校九年级学生的跳高水平,随机抽取该年级50名学生进行跳高测试,并把测试成绩绘制成如图所示的频数表和未完成的频数直方图(每组含前一个边界值,不含后一个边界值).某校九年级50名学生跳高测试成绩的频数表某校九年级50名学生跳高 测试成绩的频数直方图(1)求a 的值,并把频数直方图补充完整;(2)该年级共有500名学生,估计该年级学生跳高成绩在1.29m (含1.29m )以上的人数.18.(本小题满分8分)在平面直角坐标系中,一次函数y kx b =+(,k b 都是常数,且0k ≠)的图象经过点(1,0)和(0,2).(1)当23x -<≤时,求y 的取值范围;(2)已知点,()P m n 在该函数的图象上,且4m n -=,求点P 的坐标.19.(本小题满8分)如图,在锐角三角形ABC 中,点D ,E 分别在边AC ,AB 上,AG BC ⊥于点G ,AF DE ⊥于点F ,EAF GAC ∠=∠.(1)求证:ADE ABC △∽△; (2)若3AD =,5AB =,求AFAG的值.数学试卷 第5页(共18页) 数学试卷 第6页(共18页)20.(本小题满分10分)在面积都相等的所有矩形中,当其中一个矩形的一边长为1时,它的另一边长为3. (1)设矩形的相邻两边长分别为x ,y . ①求y 关于x 的函数表达式; ②当3y ≥时,求x 的取值范围;(2)圆圆说其中有一个矩形的周长为6,方方说有一个矩形的周长为10.你认为圆圆和方方的说法对吗?为什么?21.(本小题满分10分)如图,在正方形ABCD 中,点G 在对角线BD 上(不与点B ,D 重合),GE DC ⊥于点E ,GF BC ⊥于点F ,连接AG .(1)写出线段AG ,GE ,GF 长度之间的等量关系,并说明理由; (2)若正方形ABCD 的边长为1,105AGF ∠=,求线段BG 的长.22.(本小题满分12分)在平面直角坐标系中,设二次函数1()1()y x a x a =+--,其中0a ≠. (1)若函数1y 的图象经过点(1,)2-,求函数1y 的表达式;(2)若一次函数2y ax b =+的图象与1y 的图象经过x 轴上同一点,探究实数a ,b 满足的关系式;(3)已知点0,()P x m 和()1,Q n 在函数1y 的图象上.若m n <,求0x 的取值范围.23.(本小题满分12分)如图,已知ABC △内接于O ,点C 在劣弧AB 上(不与点A ,B 重合),点D 为弦BC 的中点,DE BC ⊥,DE 与AC 的延长线交于点E .射线AO 与射线EB 交于点F ,与O 交于点G .设GAB α∠=,ACB β∠=,EAG EBA γ∠+∠=.(1)120 130140140 130 120猜想:β关于α的函数表达式,γ关于α的函数表达式,并给出证明;(2)若135γ=,3CD =,ABE △的面积为ABC △的面积的4倍,求O 半径的长.-------------在--------------------此--------------------卷--------------------上--------------------答--------------------题--------------------无--------------------效----------------毕业学校_____________ 姓名________________ 考生号________________ ________________ _____________。

2017年浙江省杭州市中考语文试卷含答案

2017年浙江省杭州市中考语文试卷含答案

绝密★启用前 浙江省杭州市2017年初中毕业升学文化考试语 文本试卷满分120分,考试时间120分钟。

一、(30分,其中选择题每小题3分)1.下面文字中加点的字注音正确的一项是( )漫步西子湖,如在诗中游。

看到燕子,白居易的诗.“谁家新燕啄春泥”脱口而出,不禁.惊叹于燕子与春天的那份默契.;湖面波光潋滟,你自然吟诵起苏轼“淡妆浓抹总相宜”的名句;白堤桃柳相间.,花团锦簇,令人想到杭州诗人戴望舒在远方深情的思念,“春天,堤上繁花如锦幛,嫩柳枝折断有奇异的芬芳”。

丰厚的人文积淀.,增添了西湖的风雅与内蕴。

A .jìn qì jiān dìn gB .jīn qiè jiàn dìn gC .jīn qì jiàn diànD .jìn qiè jiān diàn 2.下列各项中,没有错别字的一项是( )A .他克尽职守,默默奉献三十年。

/请你把刚才说的话在说一遍。

/警察掉取监控录像仔细查看。

(摘自电视字幕)B .海鲜夜宵大排档,恭候光临!/阳光安装公司,竭诚为您服务。

/欧美时尚家具,送货到家。

(摘自招牌广告)C .红烧鸡腿、蜡肉烧笋、糖醋鱼块/凉绊黄瓜、香菇青菜、蒜泥菠菜/番茄旦汤、虾皮紫菜汤。

(摘自食堂菜单)D .梧桐树遮天蔽日,尤如一幅浓墨重彩的油画。

/最后拼搏阶段就是要像篮球冲满气、汽车加满油一样。

(摘自学生作文) 3.下列句子中加点的词语使用恰当的一项是( )A .学生会组织校青年志愿者二十余人,利用双休日走上街头,发放宣传单,劝慰..行人遵守交通法规,文明出行。

B .听了著名建筑师的报告,王茜萌发了远大的夙愿..:将来要专攻建筑学,为老百姓设计建造美观而实用的房子。

C .得知偶像柯洁败给“阿尔法狗”的消息,围棋迷舒波连续两天废寝忘食....,上课总是走神,就连老师点他名都没有听到。

2017年浙江省杭州市中考英语试卷(解析版)

2017年浙江省杭州市中考英语试卷(解析版)

2017年浙江省杭州市中考英语试卷一、听力(共两节,满分10分)第一节(共5小题,每小题2分,满分10分)听下面5段对话,每段对话后有一个小题.从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置,听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题.每段对话仅读一遍1.(2分)What is the woman looking for?A.Her phone.B.Her desk.C.Her dictionary.2.(2分)What is the man doing?A.Shopping online.B.Watching videos.C.Fixing the computer.3.(2分)How did the woman go around San Francisco?A.By car.B.By train.C.By taxi.4.(2分)Where is the museum?A.On New Street.B.At the first crossing.C.Opposite the library.5.(2分)Why couldn't Sandy get the books?A.Because he was too busy to go to the bookstore.B.Because the bookstore closed before he arrived.C.Because the books were sold out before he arrived.第二节(共3小题,每小题6分,满分20分)听下面3段对话或独白.每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置.听每段对话或独白前,你有时间阅读各小题,每小题5秒钟.听完后,各小题给出5秒钟的作答时间.每段对话或独白读两遍.6.(6分)听下面一段对话,回答第6至第8三个小题.6.Who is going to Peru this weekend?A.Lucy.B.Mike.C.Jack.7.What will Mike do this weekend?A.Stay with Jack.B.Have an exam.C.Study for a test.8.When Will Lucy see the movie?A.On Friday.B.On Saturday.C.On Sunday.9.(6分)听下面一段对话,回答第9至第11三个小题.9.Where does the conversation take place?A.At the doctor's.B.In the classroom.C.On the playground.10.Which of the following is true about the man?A.He sometimes plays football.B.He stays up late to study on weekdays.C.He hardly eats fruit or vegetables.11.What advice does the woman give?A.The man should play table tennis sometimes.B.The man should get enough sleep.C.The man should work hard for the exams.12.(8分)听下面一段独白,回答第12至第15四个小题.12.How will the weather be tomorrow in southern England?A.Cloudy and dry.B.Warm and wet.C.Sunny and dry.13.What will the weather be like across Wales early in the morning?A.Foggy.B.Rainy.C.Cloudy.14.When will it rain in the north of England?A.In the morning.B.In the afternoon.C.In the evening.15.What will the temperatures be tomorrow in Scotland and Northern Ireland?A.Around 52 degrees.B.Around 55 degrees.C.Around 64 degrees.二、阅读理解(共两节,满分30分)第一节(共4小题,每小题8分,满分30分)阅读下列短文,从每题所给的四个选项(A.B.C和D)中选出最佳选项.16.(8分)If you want to stay out of debt(债务),you need to set a budget.First,know what you are spending your money on.Write down what you buy and how much you spend.You can use an app or a computer program.Then look at your information.First,write how much your food,housing,transportation,and other monthly bills like electricity cost.These are your needs.Then write your goals.These are any debts you have to pay and money you want to save.Then write the other things you enjoy.These are extras,such as going to restaurants,movies,or the gym.These are the things you like but don't need.How much do you spend on these extras each month?Now look at your income.Your income is the amount of money you make eachmonth.How much of it do you spend on needs,goals,and extras?One good rule is 50percent of your paycheck is for your needs.Pay for things in this order:needs first,goals second,and extras third.The first step in setting a budget is to know where your money goes.Then you can make payments,plan for your goals,and make good choices.16.The underlined word"budget"in Paragraph 1means.A.a method for how to borrow moneyB.a plan for how to spend moneyC.a suggestion on how to lend moneyD.a test on how to use money17.Which of the following does housing belong in according to the text?A.Monthly incomeB.NeedsC.GoalsD.Extras18.How much is spent on restaurants according to the table?A.1,050B.750C.550D.30019.How much of your income is spent on goals according to the chart?A.20%B.30%C.50%D.100%20.(6分)VICTOR'S VACATIONS HOME CONTACT TYPE OR TRIPUse the search bar to find your perfect trip.Book or buy today for big savings!For more information,click HEREBeach Vacations★★★If you want a beach vacation,we can offer you a choice of some of the some beautiful beaches in the world.Why not experience the soft white sand the clear water of St.Vincent in the Caribbean?The beaches are perfect,the water is warm,and you can relax at your luxury(豪华)hotel.Backpacking Trip★★★If you like to stay in youth hotels(青年旅社)or bed and breakfasts (B&amp;Bs)on a backpacking trip,we can plan your trip and book all your transportation and accommodations(食宿).With an InterRail card,you can travel cheaply by train everywhere in Europe.In America,you can travel by bus,by plane,or by train.We can help you find the best way to save your money.Tours★★★Interested in a tour of some great cities?Try our Essential Europe Tour!It includes two nights in Rome,Venice,Lucerne,Paris,and London.You travel by plane and by bus,and we make all the arrangements(安排)for you.You stay in three﹣star hotels,eat in fantastic restaurants,and visit all the top tourist sights and museums with an experienced guide.Active Vacations★★★If you want to be active when you are on vacation,then try an active vacation.This fantastic trip offers you a chance to go mountain biking,hiking,and climbing in Lima,Peru.You stay in a friendly guesthouse and eat fresh local food.You can also book short journeys into nearby towns to visit the sights and local markets.20.What can you do when you go on Essential Europe Tour?A.Experience long walks along the seaside.B.Visit museums with an experienced guide.C.Travel by train everywhere in Europe.D.Book trips to visit local markets.21.Which of the following will provide you with a chance to go mountain biking?A.Beach VacationsB.Backpacking TripC.ToursD.Active Vacations22.Who will probably choose Backpacking Trip?A.A newly married couple who want to go shopping.B.A family with children who'd like to enjoy food.C.A man who wants to spend less money on a journey.D.A businessman who plans to stay at a luxury hotel.23.(8分)Class Afloat is a Canadian school on a tall ship!The ship is 210 feet long and 30 feet wide,and it can take up to sixty students.The classrooms are well﹣equipped and comfortable,and there's even a library!It isn't necessary to know anything about sailing﹣﹣﹣﹣students can learn on the ship.Not all the students are Canadian.There's usually a mix of nationalities.This year,there are also students from Mexico,the US,Germany,and Turkey.There's a mix of ages too.There are high school students sixteen to eighteen years old,and first ﹣year college students.The teachers design special study programs for each student.Because the school is a ship,you can do some exciting classes,for example,Marine Biology (studying the animals and plants in the sea)and History of Geography courses about the places you visit.Students also learn all about sailing!Students don't just study.They must also clean,cook and sail the ship.In their free time,students can rest,read,or watch a movie.In the evening,they relax with friends and have club meetings.Every sixteen to twenty days,the ship stops in a port for three to six days.In port there's lots for the students to do﹣﹣homestays,camping trips,museum tours,cultural events,hiking,etc.They also go boating and do other water sports.Parents can meet up with the students in one port every term.Students also take part in two volunteer programs in Senegal and the Dominican Republic.They help local families in different ways,for example,with basic health matters or starting a business.Students learn how,with just a little money and time,they can make changes that improve other people's lives.23.In Paragraph 2 we can get the information about.A.the shipB.the studentsC.the classesD.the activities24.Which of the following statement is true?A.Students must know how to sail before they join the ship.B.All the students take the same classes together.C.Students go home to see their parents on holiday.D.Besides studying,students also have to do jobs on the ship.25.Why are students required to take part in the volunteer projects?A.They can learn how to help others.B.They can learn how to make money.C.They can learn how to start a business.D.They can learn how to do medical practice.26.The passage is mainly about.A.learning to sail a tall shipB.sailing around the worldC.a school on a sailing shipD.after﹣school activities.27.(8分)Do you know when restaurants were invented?The first restaurant wereinvented thousands of years ago.However,they were very different from restaurants today.The first restaurants were in ancient Greece and ancient Rome.These restaurants served food in large stone bowls people didn't order food from a menu.Everyone used to share the food from big bowls.People believe that these places were very popular because most homes in ancient Greece and Rome did not have kitchens.Also,people didn't have to store food at home if they ate their meals at these restaurants.Later,restaurant began to open in China.In the early 1100s,more than one million people lived in the city of Hangzhou,China.It was a very busy city,and people had money.All of these people had to eat.Smart cooks started cooking and selling food along the Imperial Way,a very big street in the city.Unlike in ancient Greece and Rome,people in China could choose food from a menu.They didn't have to eat the same food as everyone else.For the next several centuries,there were restaurants all over the world.People could buy food on the street or at inns﹣﹣small hotels.Then in the middle of the 1700s,restaurants started opening in Paris.These restaurants were more similar to restaurants we know today.There was a bigger variety of food,and eating in these restaurants was a more enjoyable experience.In the 19th century,trains made travel much faster and simpler.In the end,this kind of restaurant began to appear all over Europe and in other parts of the world.Now,restaurants are everywhere.You can buy a variety of different kinds of food.You can have food sent to your door.But remember it wasn't always like that.27.It is believed that these first restaurants were popular because.A.people could eat different foodB.the food there was very cheapC.people were too busy to cookD.most homes didn't have kitchens28.How were the restaurants in Hangzhou different from the first restaurants?A.They offer menus to customers.B.They usually served the same foodC.They sold the food in large stone bowlsD.They prepared food for all people in the city29.The underlined part"these restaurants"in Paragraph 4means.A.restaurants in ancient Greece and ancient RomeB.restaurants in Hangzhou in the early 1100sC.restaurants in Paris in the middle of the 1700sD.restaurants all over Europe in the 19th century30.The author wrote this article to.A.helps us to choose restaurantsB.tell us the history of restaurantsC.encourage us to eat at restaurantsD.show us the changes of eating habits.二、第二节(共 5 小题,每小题 2 分,满分10 分)下面文章中有五处(第31-35题)需要添加首句.请从以下选项(A,B,C,D,E,F)中选出符合各段意思的首句,选项中有一项是多余选项.31.(10分)Family TraditionsWhere are your family traditions?The following information comes from several readers:JARED:(31)We take turns picking a movie to watch together.It's fun because I watch something my parents like,and they watch something I like.My mother likes old black and white movies,so I see a lot of them!We also make pizza and eat it in front of the TV.WINNIE:(32)My favorite meal is spaghetti and meatballs.My mom usually cooks,but my dad and sister help.On my sister's birthday,we eat pizza.On my mom's birthday,we have chicken,and on my dad's birthday we have steak.Of course,we always have a birthday cake,too.What are your family tradition?Thefollowing information comes from several readers:DANNI:(33)My family is really busy.We have a large family,and it's not easy for everyone to get together at the same time.On that day,we go to a nice restaurant and we talk and talk and talk.SUZIE:(34)After dinner,we go to the living room and play a board game,such as Scrabble or Monopoly.We have about seven different ones we play,but we only play one game a night.I plan to keep this tradition after I start my own family.ROB:(35)I get up early and make something special,such as a mushroom omelet with fruit salad.Then I put it on a tray with a newspaper and a flower,and bring it to my mother for breakfast in bed.She always acts surprised,but I do it every year.A.Every Friday night we have games night.B.On our birthdays we get our favorite meal.C.Once a month we have movie and pizza night.D.Every year,on Mother's Day,I make breakfast for my mother.E.On Friday nights my parents watch movies while I play games.F.On the first Saturday of every month we go out to eat together.三、完形填空(共15 小题,每小题 1 分,满分15 分)通读下面短文,掌握其大意,然后在各题所给的四个选项(A、B、C 和D)中选出一个最佳选项.36.(15分)This story tells of two sporting heroes who made an impossible dream come true.Bob Champion was a young jockey (骑师)with a bright (36).Then,one day,he fell off his horse.He went to the doctor (37)his injuries(伤)and was surprised when he(38)that he had cancer.The medical treatment lasted many months and made him very (39).At times,he nearly died.As the same time,there was a successful(40)called Aldaniti.Unluckily,during one race,the horse got a serious injury.The horse's owners(41)toput the horse down though the doctor advised the horse's trainer to do so.They(42)Aldaniti for a whole year and the horse's injuries got better.By this time,Bob Champion was out of(43).Slowly,he got back his strength.Eight months later,he(44)to his job as a jockey.A month after that,he rode the winning horse in a race.Soon afterwards,Aldaniti(45)returned to training.Early the next year,(46)Bob Champion and Aldaniti were almost back to full fitness.Now,there was a new plan.Bob decided to(47)Aldaniti in the Grand National,one of the UK's most famous horse races.People watching the race knew all about the(48)fights against illhealth and injury.Every one of them wanted the fairy tale to have a(49)ending.And it was perfect.Aldaniti and Bob Champion were real sporting (50).36.A.future B.idea C.smile D.voice 37.A.instead of B.except for C.because of D.away from 38.A.suggested B.discovered C.expected D.remember 39.A.sad B.scared C.poor D.weak40A.doctor B.horse C.owner D.trainer 41.A.refused B.prepared C.regretted D.forgot 42.A.waited for B.looked after C.called in D.paid for43A.work B.school C.sight D.hospital 44.A.stuck B.belonged C.returned D.moved 45.A.also B.still C.even D.again 46.A.either B.both C.all D.each 47.A.stop B.walk C.ride D.feed 48.A.one's B.pair's C.group's D.family's 49.A.sad B.funny C.happy D.similar 50.A.heroes B.players C.results D.events四、第二节:(共10 小题,每小题 1 分,满分10 分)阅读下面材料,在空白处填入适当的内容(1 个单词)或括号内单词的正确形式.将答案填写在答题纸的相应位置.51.(10分)HitchbotHave you ever seen a hitchhiker(搭便车的旅行者)standing by the side of a road?Now drivers in Canada might see(51)unusual hitchhiker;a hitchhiking robot.One of its inventors,David Harris Smith,has hitched across Canada three times.Smith and a friend,Frauke Zeller,have built Hitchbot because they wanted (52)(see)if people would stop and give the robot a lift and talk to it.The robot can chat about things it has learned,and about(53)(it)trip.You might think it's a joke,(54)Smith and Zeller's experiment has a serious point:can robots and people get along?Hitchbot(55)(begin)its journey in Nova Scotia in July.It has already completed a third of its 6,000﹣mile trip to Victoria.More than 57,000 people are following its journey(56)(close)on Facebook and Twitter,and travelers have posted lots of(57)(photo)on the websites.Hitchbot has also done some shopping,eaten motor oil,and had fun with travelers.Nobody knows(58)it will finish its journey.It might be(59)(long)than expected,but Zeller and Smith want Hitch to get(60)many rides as it can.It hasn't been in a self﹣driving car yet,but anything is possible!五、写作(共两节,满分25 分)单词拼写(共10 小题,每小题 1 分,满分10 分)根据下列句子及所给的首字母,在答题纸上按题号写出各单词的正确,完全形式(每空仅限一词).61.(1分)Boys usually wear s on their feet inside their shoes.62.(1分)Now,l very carefully to what the teacher says.63.(1分)﹣Coffee or tea?﹣Coffee,please.I p coffee to tea.64.(1分)She always wanted to sail across the Pacific O.65.(1分)She has h her diary where nobody can find it.66.(1分)I said congratulations,walked over to him and s his hand.67.(1分)Your classroom is on the second floor and o is on the third floor.68.(1分)Most of the children in my time liked to play together under that big tree,e during the summer holidays when they had more free time.69.(1分)Yang Liwei was the first Chinese astronaut in s.70.(1分)A m is a person who plays an instrument or writes songs.六、书面表达(共 1 题,满分15 分)71.(15分)假定你是李平,请你对意大利交换生Armino 的邮件进行回复,词数80词左右.To:Li PingFrom:ArminoHi Li Ping,How are you?I hope you're fine and not too busy!I can't wait to leave for China next week.But could you tell me something about Chinese table manners?What places of interest can I visit when I am in your city?See you soon!To:ArminoFrom:Li Ping_____________________________________________________________________ _____________________________________________________________________ _____________________Hi ArminoLi Ping.2017年浙江省杭州市中考英语试卷参考答案与试题解析一、听力(共两节,满分10分)第一节(共5小题,每小题2分,满分10分)听下面5段对话,每段对话后有一个小题.从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置,听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题.每段对话仅读一遍1.(2分)What is the woman looking for?A.Her phone.B.Her desk.C.Her dictionary.【解答】略2.(2分)What is the man doing?A.Shopping online.B.Watching videos.C.Fixing the computer.【解答】略3.(2分)How did the woman go around San Francisco?A.By car.B.By train.C.By taxi.【解答】略4.(2分)Where is the museum?A.On New Street.B.At the first crossing.C.Opposite the library.【解答】略5.(2分)Why couldn't Sandy get the books?A.Because he was too busy to go to the bookstore.B.Because the bookstore closed before he arrived.C.Because the books were sold out before he arrived.【解答】略第二节(共3小题,每小题6分,满分20分)听下面3段对话或独白.每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置.听每段对话或独白前,你有时间阅读各小题,每小题5秒钟.听完后,各小题给出5秒钟的作答时间.每段对话或独白读两遍.6.(6分)听下面一段对话,回答第6至第8三个小题.6.Who is going to Peru this weekend?A.Lucy.B.Mike.C.Jack.7.What will Mike do this weekend?A.Stay with Jack.B.Have an exam.C.Study for a test.8.When Will Lucy see the movie?A.On Friday.B.On Saturday.C.On Sunday.【解答】略9.(6分)听下面一段对话,回答第9至第11三个小题.9.Where does the conversation take place?A.At the doctor's.B.In the classroom.C.On the playground.10.Which of the following is true about the man?A.He sometimes plays football.B.He stays up late to study on weekdays.C.He hardly eats fruit or vegetables.11.What advice does the woman give?A.The man should play table tennis sometimes.B.The man should get enough sleep.C.The man should work hard for the exams.【解答】略12.(8分)听下面一段独白,回答第12至第15四个小题.12.How will the weather be tomorrow in southern England?A.Cloudy and dry.B.Warm and wet.C.Sunny and dry.13.What will the weather be like across Wales early in the morning?A.Foggy.B.Rainy.C.Cloudy.14.When will it rain in the north of England?A.In the morning.B.In the afternoon.C.In the evening.15.What will the temperatures be tomorrow in Scotland and Northern Ireland?A.Around 52 degrees.B.Around 55 degrees.C.Around 64 degrees.【解答】略二、阅读理解(共两节,满分30分)第一节(共4小题,每小题8分,满分30分)阅读下列短文,从每题所给的四个选项(A.B.C和D)中选出最佳选项.16.(8分)If you want to stay out of debt(债务),you need to set a budget.First,know what you are spending your money on.Write down what you buy and how much you spend.You can use an app or a computer program.Then look at your information.First,write how much your food,housing,transportation,and other monthly bills like electricity cost.These are your needs.Then write your goals.These are any debts you have to pay and money you want to save.Then write the other things you enjoy.These are extras,such as going to restaurants,movies,or the gym.These are the things you like but don't need.How much do you spend on these extras each month?Now look at your income.Your income is the amount of money you make each month.How much of it do you spend on needs,goals,and extras?One good rule is 50percent of your paycheck is for your needs.Pay for things in this order:needs first,goals second,and extras third.The first step in setting a budget is to know where your money goes.Then you can make payments,plan for your goals,and make good choices.16.The underlined word"budget"in Paragraph 1means.BA.a method for how to borrow moneyB.a plan for how to spend moneyC.a suggestion on how to lend moneyD.a test on how to use money17.Which of the following does housing belong in according to the text?B A.Monthly incomeB.NeedsC.GoalsD.Extras18.How much is spent on restaurants according to the table?DA.1,050B.750C.550D.30019.How much of your income is spent on goals according to the chart?AA.20%B.30%C.50%D.100%【解答】16.B 细节理解题,根据第一段中的句子know what you are spending your money on了解你把钱花在什么上面?Write down what you buy and how much you spend 记下你买什么花了多少钱,How much do you spend on these extras each month?你每个月花在额外部分多少钱,由此可知这些都是预算花费,故选B.17.B 细节理解题,根据write how much your food,housing,transportation,and other monthly bills like electricity cost.These are your needs.记下你的食物、房屋、交通、和其他像电费一样的每月账单.这些是你的必须,可知housing属于needs,故选B.18.D 细节理解题,根据表格内容显示,restaurants$300,可知在饭店里的消费是300美元,故选D.19.A 细节理解题,根据表格内容显示,income 3500总收入3500美元,goals700目标700美元,由此可知,目标消费占总收入的20%,故选A.20.(6分)VICTOR'S VACATIONS HOME CONTACT TYPE OR TRIPUse the search bar to find your perfect trip.Book or buy today for big savings!For more information,click HEREBeach Vacations★★★If you want a beach vacation,we can offer you a choice of some of the some beautiful beaches in the world.Why not experience the soft white sand the clear water of St.Vincent in the Caribbean?The beaches are perfect,the water is warm,and you can relax at your luxury(豪华)hotel.Backpacking Trip★★★If you like to stay in youth hotels(青年旅社)or bed and breakfasts (B&amp;Bs)on a backpacking trip,we can plan your trip and book all your transportation and accommodations(食宿).With an InterRail card,you can travel cheaply by train everywhere in Europe.In America,you can travel by bus,by plane,or by train.We can help you find the best way to save your money.Tours★★★Interested in a tour of some great cities?Try our Essential Europe Tour!It includes two nights in Rome,Venice,Lucerne,Paris,and London.You travel by plane and by bus,and we make all the arrangements(安排)for you.You stay in three﹣star hotels,eat in fantastic restaurants,and visit all the top tourist sights and museums with an experienced guide.Active Vacations★★★If you want to be active when you are on vacation,then try an active vacation.This fantastic trip offers you a chance to go mountain biking,hiking,and climbing in Lima,Peru.You stay in a friendly guesthouse and eat fresh local food.You can also book short journeys into nearby towns to visit the sights and local markets.20.What can you do when you go on Essential Europe Tour?B A.Experience long walks along the seaside.B.Visit museums with an experienced guide.C.Travel by train everywhere in Europe.D.Book trips to visit local markets.21.Which of the following will provide you with a chance to go mountain biking?DA.Beach VacationsB.Backpacking TripC.ToursD.Active Vacations22.Who will probably choose Backpacking Trip?CA.A newly married couple who want to go shopping.B.A family with children who'd like to enjoy food.C.A man who wants to spend less money on a journey.D.A businessman who plans to stay at a luxury hotel.【解答】答案:20.B 细节理解题.根据倒数第四行句子You stay in three﹣star hotels,eat in fantastic restaurants,and visit all the top tourist sights and museums with an experienced guide.你住三星级酒店,在美妙的餐厅吃饭,并和一位有经验的导游参观所有的顶级旅游景点和博物馆.可知当你踏上欧洲之旅时会和一个经验丰富的导游参观博物馆.故选B.21.D 细节理解题.根据倒数第三行句子Active Vacations★★★If you want to be active when you are on vacation,then try an active vacation.活跃的假期★★★当你在度假时如果你想要活跃,那么尝试活跃的假期.This fantastic trip offers you a chance to go mountain biking,hiking,and climbing in Lima,Peru.这奇妙的旅行提供你一个机会去在利马,秘鲁骑山地自行车、徒步旅行、攀岩.可知在Active Vacations活跃的假期中可以给你一个骑山地自行车的机会.故选D.22.C 细节理解题.根据第五行句子With an InterRail card,you can travel cheaply by train everywhere in Europe.In America,you can travel by bus,by plane,or bytrain.We can help you find the best way to save your money.有一张有效期卡,你可以在欧洲的任何地方乘火车旅行.在美国,你可以坐公共汽车,坐飞机,或者坐火车.我们可以帮你找到最佳的方式来节省钱.可知一个想在一段旅程中花更少的钱的人会选择Backpacking Trip背包旅行.故选C.23.(8分)Class Afloat is a Canadian school on a tall ship!The ship is 210 feet long and 30 feet wide,and it can take up to sixty students.The classrooms are well﹣equipped and comfortable,and there's even a library!It isn't necessary to know anything about sailing﹣﹣﹣﹣students can learn on the ship.Not all the students are Canadian.There's usually a mix of nationalities.This year,there are also students from Mexico,the US,Germany,and Turkey.There's a mix of ages too.There are high school students sixteen to eighteen years old,and first ﹣year college students.The teachers design special study programs for each student.Because the school is a ship,you can do some exciting classes,for example,Marine Biology (studying the animals and plants in the sea)and History of Geography courses about the places you visit.Students also learn all about sailing!Students don't just study.They must also clean,cook and sail the ship.In their free time,students can rest,read,or watch a movie.In the evening,they relax with friends and have club meetings.Every sixteen to twenty days,the ship stops in a port for three to six days.In port there's lots for the students to do﹣﹣homestays,camping trips,museum tours,cultural events,hiking,etc.They also go boating and do other water sports.Parents can meet up with the students in one port every term.Students also take part in two volunteer programs in Senegal and the Dominican Republic.They help local families in different ways,for example,with basic health matters or starting a business.Students learn how,with just a little money and time,they can make changes that improve other people's lives.23.In Paragraph 2 we can get the information about B.A.the shipB.the studentsC.the classesD.the activities24.Which of the following statement is true?DA.Students must know how to sail before they join the ship.B.All the students take the same classes together.C.Students go home to see their parents on holiday.D.Besides studying,students also have to do jobs on the ship.25.Why are students required to take part in the volunteer projects?A A.They can learn how to help others.B.They can learn how to make money.C.They can learn how to start a business.D.They can learn how to do medical practice.26.The passage is mainly about C.A.learning to sail a tall shipB.sailing around the worldC.a school on a sailing shipD.after﹣school activities.【解答】答案:23.B 细节归纳题.根据第二段内容及其句子Not all the students are Canadian.不是所有的学生都是加拿大人.there are also students from Mexico,the US,Germany,and Turkey.也有学生来自墨西哥,美国,德国和土耳其.可知说的是学生.故选B.24.D 细节判断题.根据第四段句子Students don't just study.They must also clean,cook and sail the ship.学生不只是学习.他们也必须打扫卫生,做饭和驾驶船.可知除了学习之外,学生们还必须做在船上工作.故选D.25.A 细节理解题.根据最后一段句子They help local families in different ways,他们以不同的方式帮助当地家庭,they can make changes that improve other people's lives.他们可以改善和提高别人的生活.可知他们可以学习如何帮助别。

2017年杭州市语文中考真题卷

2017年杭州市语文中考真题卷

2017年杭州市语文中考真题卷适用年级:九年级建议时长:0分钟试卷总分:59.0分一、单选类1.(2017•杭州)下面文字中划线字注音正确的一项是()漫步西子湖,如在诗中游。

看到燕子,白居易的诗“谁家新燕啄春泥”脱口而出,不禁惊叹于燕子与春天的那份默契;湖面波光潋滟,你自然吟诵起苏轼“淡妆浓抹总相宜”的名句;白堤桃柳相间,花团锦簇,令人想到杭州诗人戴望舒在远方深情的思念,“春天,堤上繁花如锦幛,嫩柳枝折断有奇异的芬芳”。

丰厚的人文积淀,增添了西湖的风雅与内蕴。

(0.0分)(单选)A. jìn qì jiàn dìngB. jīn qiè jiàn dìngC. jīn qì jiān diànD. jìn qiè jiān diàn2.(2017•杭州)下列各项中,没有错别字的一项是()(0.0分)(单选)A. 他克尽职守,默默奉献三十年。

/请你把刚才说的话在说一遍。

/警察掉取监控录像仔细查看。

(摘自电视字幕)B. 海鲜夜宵大排档,恭候光临!/阳光安装公司,竭诚为您服务。

/欧美时尚家具,送货到家。

(摘自招牌广告)C. 红烧鸡腿、腊肉烧笋、糖醋鱼块/凉绊黄瓜、香菇青菜、蒜泥菠菜/番茄旦汤、虾皮紫菜汤(摘自食堂菜单)D. 梧桐树遮天蔽日,尤如一幅浓墨重彩的油画。

/最后拼搏阶段就是要像篮球冲满气、汽车加满油一样。

(摘自学生作文)3.(2017•杭州)下列句子中划线词语使用恰当的一项是()(0.0分)(单选)A. 学生会组织校青年志愿者二十余人,利用双休日走上街头,发放宣传单,劝慰行人遵守交通法规,文明出行。

B. 听了著名建筑师的报告,王茜萌发了远大的夙愿:将来要专攻建筑学,为老百姓设计建造美观而实用的房子。

C. 得知偶像柯洁败给“阿尔法狗”的消息,围棋迷舒波连续两天废寝忘食,上课总是走神,就连老师点他名都没有听到。

浙江省杭州市2017年中考英语真题(含答案)

浙江省杭州市2017年中考英语真题(含答案)

2017年浙江省杭州市中考英语真题试卷一、听下面5段对话,每段对话后有一个小题。

从题中所给的A、B、C三个选项中选出最佳选项。

1.What is the woman looking for?A.Her phone.B.Her desk.C.Her dictionary.2.What is the man doing?A.Shopping online.B.Watching videos.C.Fixing the computer.3.How did the woman go around San Francisco?A.By car.B.By train.C.By taxi.4.Where is the museum?A.On New Street.B.At the first crossing.C.Opposite the library5.Why couldn't Sandy get the books?A.Because he was too busy to go to the bookstore.B.Because the bookstore closed before he arrived.C.Because the books were sold out before he arrived.二、听下面3段对话或独白。

6.听下面一段对话,回答三个小题。

(1)Who is going to Peru this weekend?A.Lucy.B.Mike.C.Jack.(2)What will Mike do this weekend?A.Stay with Jack.B.Have an exam.C.Study for a test.(3)When Will Lucy see the movie?A.On Friday.B.On Saturday.C.On Sunday.7.听下面一段对话,回答三个小题。

2017年浙江省杭州市中考语文试卷

2017年浙江省杭州市中考语文试卷

2017年浙江省杭州市中考语文试卷一、(30分,其中选择题每小题3分)1.(3分)下面文字中加点的字注音正确的一项是()漫步西子湖,如在诗中游.看到燕子,白居易的诗“谁家新燕啄春泥”脱口而出,不禁.惊叹于燕子与春天的那份默契.;湖面波光潋滟,你自然吟诵起苏轼“淡妆浓抹总相宜"的名句;白堤桃柳相间.,花团锦簇,令人想到杭州诗人戴望舒在远方深情的思念,“春天,堤上繁花如锦幛,嫩柳枝折断有奇异的芬芳"。

丰厚的人文积淀.,增添了西湖的风雅与内蕴。

A.jìn qìjiàn dìngB.jīn qiè jiàn dìngC.jīn qì jiān diànD.jìn qiè jiān diàn2.(3分)下列各项中,没有错别字的一项是()A.他克尽职守,默默奉献三十年。

/请你把刚才说的话在说一遍。

/警察掉取监控录像仔细查看。

(摘自电视字幕)B.海鲜夜宵大排档,恭候光临!/阳光安装公司,竭诚为您服务./欧美时尚家具,送货到家。

(摘自招牌广告)C.红烧鸡腿、腊肉烧笋、糖醋鱼块/凉绊黄瓜、香菇青菜、蒜泥菠菜/番茄旦汤、虾皮紫菜汤(摘自食堂菜单)D.梧桐树遮天蔽日,尤如一幅浓墨重彩的油画。

/最后拼搏阶段就是要像篮球冲满气、汽车加满油一样。

(摘自学生作文)3.(3分)下列句子中加点的词语使用恰当的一项是()A.学生会组织校青年志愿者二十余人,利用双休日走上街头,发放宣传单,劝.慰.行人遵守交通法规,文明出行。

B.听了著名建筑师的报告,王茜萌发了远大的夙愿..:将来要专攻建筑学,为老百姓设计建造美观而实用的房子。

C.得知偶像柯洁败给“阿尔法狗”的消息,围棋迷舒波连续两天废寝忘食....,上课总是走神,就连老师点他名都没有听到。

D.当竺可桢之子、88岁高龄的竺安先生向浙大捐赠56册竺可桢日记手稿时,现场嘉宾肃然起敬....,报以长时间热烈的掌声.4.(3分)下列句子中没有语病的一项是()A.有些家长为自己的孩子购置了多功能电话手表,是一种可以双向通话,能准确定位,并具有防水功能的电子设备。

2017年浙江省杭州市中考数学试卷含答案

2017年浙江省杭州市中考数学试卷含答案



20.(本小题满分 10 分)
在面积都相等的所有矩形中,当其中一个矩形的一边长为 1 时,它的另一边长为 3.
(1)设矩形的相邻两边长分别为 x , y .

①求 y 关于 x 的函数表达式;
②当 y≥3 时,求 x 的取值范围;
(2)圆圆说其中有一个矩形的周长为 6,方方说有一个矩形的周长为 10.你认为圆圆和 方方的说法对吗?为什么?
参观人次的平均年增长率为 x ,则
()
A.10.8(1 x) 16.8
B.16.8(1 x) 10.8
C.10.8(1 x)2 16.8
D.10.8[(1 x) (1 x)2 ] 16.8
8.如图,在 Rt△ABC 中, ABC 90 , AB 2 , BC 1 .把 △ABC
(1)点点同学通过画图和测量得到以下近似数据:

30
40
50
60

120
130
140
150

150
140
130
120
猜想: 关于 的函数表达式, 关于 的函数表达式,并给出证明;
(2)若 135 , CD 3 , △ABE 的面积为 △ABC 的面 积的 4 倍 ,求 O 半径的长.
数.
数学试卷 第 3页(共 18页)
18.(本小题满分 8 分) 在平面直角坐标系中,一次函数 y kx b ( k,b 都是常数,且 k 0 )的图象经过点 (1,0) 和 (0, 2) . (1)当 2<x≤3 时,求 y 的取值范 围; (2)已知点 P(m,n) 在该函数的图象上,且 m n 4 ,求点 P 的坐标.

2017年浙江省杭州市中考语文真题及参考答案

2017年浙江省杭州市中考语文真题及参考答案

2017年浙江省杭州市中考语文真题及参考答案(WORD版本真题试卷+名师解析答案,建议下载保存)一、选择题(共7小题,每小题3分,满分30分)1.下面文字中加点的字注音正确的一项是()漫步西子湖,如在诗中游。

看到燕子,白居易的诗“谁家新燕啄春泥”脱口而出,不禁.惊叹于燕子与春天的那份默契.;湖面波光潋滟,你自然吟诵起苏轼“淡妆浓抹总相宜”的名句;白堤桃柳相间.,花团锦簇,令人想到杭州诗人戴望舒在远方深情的思念,“春天,堤上繁花如锦幛,嫩柳枝折断有奇异的芬芳”。

丰厚的人文积淀.,增添了西湖的风雅与内蕴。

A.jìn qìjiàn dìngB.jīn qiè jiàn dìngC.jīn qì jiān diànD.jìn qiè jiān diàn2.下列各项中,没有错别字的一项是()A.他克尽职守,默默奉献三十年./请你把刚才说的话在说一遍./警察掉取监控录像仔细查看.(摘自电视字幕)B.海鲜夜宵大排档,恭候光临!/阳光安装公司,竭诚为您服务./欧美时尚家具,送货到家.(摘自招牌广告)C.红烧鸡腿、蜡肉烧笋、糖醋鱼块/凉绊黄瓜、香菇青菜、蒜泥菠菜/番茄旦汤、虾皮紫菜汤(摘自食堂菜单)D.梧桐树遮天蔽日,尤如一幅浓墨重彩的油画./最后拼搏阶段就是要像篮球冲满气、汽车加满油一样.(摘自学生作文)3.下列句子中加点的词语使用恰当的一项是()A.学生会组织校青年志愿者二十余人,利用双休日走上街头,发放宣传单,劝.慰.行人遵守交通法规,文明出行B.听了著名建筑师的报告,王茜萌发了远大的夙愿..:将来要专攻建筑学,为老百姓设计建造美观而实用的房子C.得知偶像柯洁败给“阿尔法狗”的消息,围棋迷舒波连续两天废寝忘食....,上课总是走神,就连老师点他名都没有听到D.当竺可桢之子、88岁高龄的竺安先生向浙大捐赠56册竺可桢日记手稿时,现场嘉宾肃然起敬....,报以长时间热烈的掌声4.下列句子中没有语病的一项是()A.有些家长为自己的孩子购置了多功能电话手表,是一种可以双向通话,能准确定位,并具有防水功能的电子设备B.随着人们对非物质文化遗产保护意识的不断增强,使得杭州特有剧种﹣﹣“杭剧”的传承与发展迎来了难得的历史机遇C.最近,来自“一带一路”沿线20个国家的在华留学生,评选出中国“新四大发明”:高铁、网购、支付宝和共享单车D.傅雷以深厚的学养、真挚的父爱,倾听着万里之外儿子的每一次心跳和儿子前进路上可能出现的困难,传送着自己的惦念5.古诗文名句填空。

浙江省杭州市2017中考试卷(数学 扫描版)

浙江省杭州市2017中考试卷(数学 扫描版)

一.选择题1.-2²=( )A .-2B .-4C .2D .42.太阳与地球的平均距离大约是150 000 000千米,数据150 000 000用科学计数法表示为( )A .1.5×108B .1.5×109C .0.15×109D .15×1073.如图,在△ABC 中,点D ,E 分别在边AB ,AC 上,DE ∥BC ,若BD=2AD ,则( )A .21=AB AD B .21=EC AE C .21=EC AD D .21=BC DE4.|1+3|+|1-3|=( )A .1B .3C .2D .235.设x ,y ,c 是实数,( )A .若x=y ,则x+c=y-cB .若x=y ,则xc=ycC .若x=y ,则cy c x = D .若c y c x 32=,则2x=3y 6.若x+5>0,则( )A .x+1<0B .x-1<0C .5x <-1 D .-2x <12 7.某景点的参观人数逐年增加,据统计,2014年为10.8万人次,2016年为16.8万人次,设参观人次的平均年增长率为x ,则( )A .10.8(1+x )=16.8B .16.8(1-x )=10.8C .10.8(1+x )2=16.8 D .10.8[(1+x )+(1+x )²]16.88.如图,在Rt △ABC 中,∠ABC=90°,AB=2,BC=1.把△ABC 分别绕直线AB 和BC 旋转一周,所得几何体的地面圆的周长分别记作l1,l2,侧面积分别记作S1,S2,则( )A .l 1:l 2=1:2,S 1:S 2=1:2B .l 1:l 2=1:4,S 1:S 2=1:2C.l1:l2=1:2,S1:S2=1:4 D.l1:l2=1:4,S1:S2=1:49.设直线x=1是函数y=ax²+bx+c(a,b,c是实数,且a<0)的图象的对称轴,()A.若m>1,则(m-1)a+b>0B.若m>1,则(m-1)a+b<0C.若m<1,则(m-1)a+b>0D.若m<1,则(m-1)a+b<010.如图,在△ABC中,AB=AC,BC=12,E位AC边的中点,线段BE的垂直平分线交边BC于点D,设BD=x,tan∠ACB=y,则()A.x-y²=3 B.2x-y²=9 C.3x-y²=15 D.4x-y²=21二.填空题11.数据2,2,3,4,5的中位数是________12.如图,AT切⊙O于点A,AB是⊙O的直径,若∠ABT=40°,则∠ATB=________13.一个仅装有球的不透明布袋里共有3个球(只有颜色不同),其中2个是红球,1个是白球,从中任意摸出一个球,记下颜色后放回,搅匀,再任意摸出一个球,则两次摸出都是红球的概率是_________14.若1313--=⋅--m m m m m ,则m=__________ 15.如图,在Rt △ABC 中,∠BAC=90°,AB=15,AC=20,点D 在边AC 上,AD=5,DE ⊥BC 于点E ,连结AE ,则△ABE 的面积等于_______16.某水果点销售50千克香蕉,第一天售价为9元/千克,第二天降价6元/千克,第三天再降为3元/千克。

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

B.若 m>1,则(m-1)a+b<0
C.若 m<1,则(m-1)a+b>0
D.若 m<1,则(m-1)a+b<0
10.如图,在△ABC 中,AB=AC,BC=12 ,E 位 AC 边的中点,线段 BE 的垂直平分线交边 BC 于
点 D,设 BD=x,tan∠ACB=y,则( )
1
A.x-y²=3
19.如图在锐角三角形 ABC 中,点 D,E 分别在边 AC,A B 上,AG⊥BC 于点 G,AF⊥DE 于点 F,∠E AF=∠GAC。 (1)求证:△ADE∽△ABC; (2)若 AD=3,AB=5,求 AF 的值。
AG
20.在面积都相等的所有矩形中,当其中一个矩形的一边长为 1 时,它的另一边长为 3. (1)设矩形的相邻两边长分别为 x,y。
A.l1:l2=1:2,S1:S2=1:2
B.l1:l2=1:4,S1:S2=1:2
C.l1:l2=1:2,S1:S2=1:4
D.l1:l2=1:4,S1:S2=1:4
9.设直线 x=1 是函数 y=ax²+bx+c(a,b,c 是实数,且 a<0)的图象的对称轴,( )
A.若 m>1,则(m-1)a+b>0
B.2x-y²=9
C.3x-y²=15 D.4x-y²=21
二.填空题
11.数据 2,2,3,4,5 的中位数是________
12.如图,AT 切⊙O 于点 A,AB 是⊙O 的直径,
若∠ABT=40°,则∠ATB=________
13.一个仅装有球的不透明布袋里共有 3 个球(只有颜色不同),其中 2 个是红球 ,1 个是白
试成绩绘制成如图所示的频数表和未完成的频数直方图(每组含前一个边界值,不含后一个边
界值)。
(1)求 a 的值,并把频数直方图补充完整; (2)该年级共有 500 名学生,估计该年级学生跳高成绩在 1.29m(含 1.29m)以.上.的.人.数.。.
2
18.在平面直角坐标系中,一次函数 y=kx+b(k,b 都是常数,且 k≠0)的图象经过点(1,0) 和(0,2)。 (1)当-2<x≤3 时,求 y 的取值范 围 (2)已知点 P(m,n)在该函数的图象上,且 m-n=4,求点 P 的坐标。
球,从中任意摸出一个球,记下颜色后放回,搅匀,再任意摸出一个球,则两次摸出都是红球
的概率是_________
14.若
m m
3 1
m
m
3 1
,则
m=__________
15.如图,在 Rt△ABC 中,∠BAC=90°,AB=15,AC=20,
点 D 在边 AC 上,AD=5,DE⊥BC 于点 E,连结 A E,则△ABE 的面积等于_______
3
22.在平面直角坐标系中,设二次函数 y1=(x+a)(x-a-1),其中 a≠0。 (1)若函数 y1 的图象经过点(1,-2),求函数 y1 的表达式; (2)若一次函数 y2=ax+b 的图象与 y1 的图象经过 x 轴上同一点,探究实数 a,b 满足的关系式; (3)已知点 P(x0,m)和 Q(1,n)在函数 y1 的图象上,若 m<n,求 x0 的取值范围。
6.若 x+5>0,则 (
D.若 x y ,则 2x=3y 2c 3c
) A.x+1<0 B.x-1<0
C. x <-1 5
D.-2x<12
7.某景点的参观人数逐年增加,据统计,2014 年 为 10.8 万人次,2016 年为 16.8 万人次,设
参观人次的平均年增长率为 x,则( )
A.10.8(1+x)=16.8
B.16.8(1-x)=10.8
C.10.8(1+x)2=16.8
D.10.8[(1+x)+(1+x)²]16.8
8.如图,在 Rt△ABC 中,∠ABC=90°,AB=2,BC=1.把△ABC 分别绕
直线 AB 和 BC 旋转一周,所得几何体的地面圆的周长分别记作 l1,l2,
侧面积分别记作 S1,S2,则( )
2017 年杭州市中考试卷
一.选择题
1.-2²=( )A.-2
B.-4
C.2 D.4
2.太阳与地球的平均距离大约是 150 000 000 千米 ,数据 150 000 000 用科学计数法表示为( )
A.1.5×108 B.1.5×109 C.0.15×109 D.15×107
3.如图,在△ABC 中,点 D,E 分别在边 AB,AC 上,DE∥BC,若 BD=2AD,则( )
16.某水果点销售 50 千克香蕉,第一天售价为 9 元/千克,第二天降价 6 元/千克,第三天再
降为 3 元/千克。三天全部售完,共计所得 270 元,若该店第二天销售香蕉 t 千克,则第三天
销售香蕉________千克。(用含 t 的代数式 表示。)
三.解答题
17.为了了解某校九年级学生的跳高水平,随机抽取该年级 50 名学生进行跳高测试,并把测
①求 y 关于 x 的函数表达式; ②当 y≥3 时,求 x 的取值范围; (2)圆圆说其中有一个矩形的周长为 6,方方说有一个矩形的周长为 10,你认为圆圆和方方 的说法对吗?为什么?
21.如图,在正方形 ABCD 中,点 G 在对角线 BD 上(不与点 B,D 重合),GE⊥DC 于点 E, GF⊥BC 于点 F,连结 AG。 (1)写出线段 AG,GE,GF 长度之间的数量关系,并说明理由; (2)若正方形 ABCD 的边长为 1,∠AGF=105°,求线段 BG 的长。
A. AD 1 AB 2
B. AE 1 EC 2
C. AD 1 EC 2
D. DE 1 BC 2
4.|1+ 3 |+|1- 3 |=( )
A.1
B. 3
C.2
D.2 3
5.设 x,y,c 是实数,( )
A.若 x=y,则 x+c=y-c
B.若 x=y,则 xc=yc
C.若 x=y,则 x y cc
23.如图,已知△ABC 内接于⊙O,点 C 在劣弧 AB 上(不与点 A,B 重合),点 D 为弦 BC 的中
点,DE⊥BC,DE 与 AC 的延长线交于点 E,射线 AO 与射线 EB 交于点 F,与⊙O 交于点 G,设∠
GAB=ɑ,∠ACB=β,∠EAG+∠EBA=γ, (1)点点同学通过画图和测量得到以下近.似.数据:
相关文档
最新文档