九年级上期末复习试题
九年级(上)期末复习2_1

九年级(上)期末复习2__11、一个茶壶的容积为600ml ,用它最多可装水____________g 。
2、新疆的加油站的油价有两种价格方式,一种以所加油质量计价,另一种以所加油体积计价,你认为哪种计价的方式更合理?简述理由。
答:以所加油的_______________计价公平合理。
理由是:_______________________________________________________________ 3、如图所示,曲杆AOB 可绕轴O 转动,AO=BO ,在A 点挂一重为200N 的重物,曲杆在水平位置平衡时,向下的拉力F _______200N 。
(选填“大于”、“小于”或“等于”)4、用调节好的托盘天平称量一只烧杯的质量时,当天平的右盘加上最小的砝码后,发现指针稍微向分度盘中线的左侧偏斜,为了使天平平衡,应该( )A 、把天平右端的平衡螺母向外旋出一些B 、把天平右端的平衡螺母向里旋进一些C 、把标尺的游码向右移一些D 、把天平的右端的底部垫高一些5、如图1所示,是甲、乙两种物质的质量和体积的关系图象,下列说法正确的是( )A 、ρ甲>ρ乙B 、ρ乙=0.5×103kg/m 3C 、若m 甲=m 乙,则V 甲<V 乙D 、若V 甲=V 乙,则m 甲<m 乙6、两种金属的密度分别是ρ1,ρ2。
取质量相同的这两种金属做成的合金,则该合金的密度(假设混合过程中体积不变)( )A 、221ρρ+ B 、21212ρρρρ+ C 、212ρρ+ D 、21212ρρρρ+7、下列说法正确的是( )A 、踢出去的足球能继续往前飞行是因为受到惯性力的作用B 、静止在水平桌面上的书受到的重力和书对桌面的压力是一对平衡力C 、绕地球飞行的飞船受到非平衡力的作用D 、列车匀速运动时,火车头拉车厢的力大于在车厢所受到的阻力8、装有液体的甲、乙两相同烧杯,如图所示,放入两个完全相同的物体,当物体静止后两烧杯中液面恰好相平。
九年级数学上册期末复习综合测试题(含答案)

(第4题)九年级数学上册期末复习综合测试题(含答案)一、选择题(本大题共6小题,每小题2分,共12分.) 1.一元二次方程 x 2=x 的根是( )A .x 1=0,x 2=1B .x 1=0,x 2=-1C .x 1=x 2=0D .x 1=x 2=12.一个不透明布袋中有2个红球,3个白球,这些球除颜色外无其他差别,摇匀后从中随机摸出一个小球,该小球是红色的概率为( )A .12B .23C .15D .253.若一组数据 2,3,4,5,x 的方差比另一组数据 5,6,7,8,9 的方差大,则 x 的值可能是( ) A .1B .4C .6D .84.如图,OA 、OB 是⊙O 的半径,C 是⊙O 上一点.若∠OAC =16°,∠OBC =54°,则 ∠AOB 的度数是( )A .70°B .72°C .74°D .76°5.若关于x 的一元二次方程ax 2+k =0的一个根为2,则二次函数y =a (x +1)2+k 与x 轴的交点坐标为( ) A .(-3,0)、(1,0) B .(-2,0)、(2,0) C .(-1,0)、(1,0)D .(-1,0)、(3,0)6.如图,在Rt △ABC ,∠ACB =90°,AC =4,BC =3,点D ,E 分别在AB ,AC 上,连接DE ,将△ADE 沿DE 翻折,使点A 的对应点F 落在BC 的延长线上,若FD 平分∠EFB ,则AD 的长为( ) A . 157B .207C .258D .259二、填空题(本大题共10小题,每小题2分,共20分.) 7(第12题)l 1 l 2l 3A BCEFD (第11题)8.若a b =43,则a -b b= .9.设x 1、x 2是方程x 2+mx -m +3=0的两个根,则x 1+x 2-x 1x 2= .10.把抛物线y =-x 2向左平移2个单位,然后向上平移3个单位,则平移后该抛物线相应的函数表达式为 .11.如图,l 1∥l 2∥l 3,若AD =1,BE =3,CF =6,则ABBC的值为 .12.如图,点A 、B 、C 在⊙O 上,⊙O 的半径为3,∠AOC =的长为 . 13.已知关于x 的函数y =x 2+2mx +1,若x >1时,y 随x 的增大而增大,则m 的取值范围是 .14.如图,弦AB 是⊙O 的内接正六边形的一边,弦AC 是⊙O 的内接正方形的一边,若 BC =2+23,则⊙O 的半径为 .15.如图,正方形ABCD 的边长是4,点E 在DC 上,点F 在AC 上,∠BFE =90°,若 CE =116.如图,在矩形ABCD 中,AB =2,AD =4,点E 、F 分别为AD 、CD 边上的点,且EF 的长为2,点G 为EF 的中点,点P 为BC 上一动点,则P A +PG 的最小值为 . 三、解答题(本大题共11小题,共88分.请在答题卡指定区域.......内作答,解答时应写出文字说明、证明过程或演算步骤)17.(8分)解方程:(1)x 2-4x -5=0; (2)x 2-4=2x (x -2).18.(8分)甲乙两人在相同条件下完成了5次射击训练,两人的成绩(单位:环)如下(1)甲射击成绩的中位数为 环,乙射击成绩的众数为 环;(2)计算两人射击成绩的方差;(3)根据训练成绩,你认为选派哪一名队员参赛更好,为什么?19.(8分)某校开展秋季运动会,需运动员代表进行发言,从甲、乙、丙、丁四名运动员中随机抽取.(1)若随机抽取1名,甲被抽中的概率为 ; (2)若随机抽取2名,求甲在其中的概率.20.(7分)如图,在△ABC 中,点D 、E 分别在AB 、AC 上,且∠BCE +∠BDE =180°. (1)求证:△ADE ∽△ACB ;(2)连接BE 、CD ,求证:△AEB ∽△ADC .21.(8分)如图是二次函数y =-x 2+bx +c 的图像. (1)求该二次函数的关系式及顶点坐标; (2)当y >0时 x 的取值范围是 ;(3)当m <x <m +4时,-5<y ≤4,则m 的值为 .22.(7分)在Rt △ABC ,∠BAC =90°,AB =AC ,D 、E、F 分别为BC 、AB 、AC 边上的点,且∠EDF =45°.(1)求证:△EBD ∽△DCF ;(2)当D 是BC 的中点时,连接EF ,若CF =5,DF =4,则EF 的长为 .23.(8分)某超市销售一种商品,成本为每千克50元.当每千克售价60元时,每天的销售量为60千克,经市场调查,当每千克售价增加1元,每天的销售量减少2千克. (1)为保证某天获得750元的销售利润,则该天的销售单价应定为多少? (2)当销售单价定为多少时,才能使当天的销售利润最大?最大利润是多少?24.(8分)如图,AB 为⊙O 的直径,弦CD ⊥AB 于点P ,连接BC ,过点D 作DE ⊥CD ,交⊙O 于点E ,连接AE ,F 是DE 延长线上一点,且∠BCD =∠F AE . (1)求证:AF 是⊙O 的切线;(2)若AF =2,EF =1,求⊙O 的半径.25.(8分)已知二次函数y =(x -2)(x -m )(m 为常数). (1)求证:不论m 为何值,该函数的图像与x 轴总有公共点;(2)若M (-1,0), N (3,0),该函数图像与线段MN 只有1个公共点,直接写出 m 的取值范围;(3)若点A (-1,a ),B (1,b ),C (3,c )在该函数的图像上,当abc <0时,结合函数图像,直接写出m 的取值范围.26.(8分)如图,四边形ABCD 内接于⊙O ,AB =AC ,BD ⊥AC ,垂足为E . (1)求证:∠BAC =2∠DAC ; (2)若AB =10,CD =5,求BC 的长.27.(10分)定义:圆心在三角形的一边上,与另一边相切,且经过三角形一个顶点(非切点)的圆,称为这个三角形圆心所在边上的“伴随圆”.(1) 如图①,在△ABC 中,∠C =90°,AB =5,AC =3,则BC 边上的伴随圆的半径为 . (2)如图②,△ABC 中,AB =AC =5,BC =6,直接写出它的所有伴随圆的半径. (3)如图③,△ABC 中,∠ACB =90°,点E 在边AB 上,AE =2BE ,D 为AC 的中点,且∠CED =90°.①求证:△CED 的外接圆是△ABC 的AC 边上的伴随圆; ②DE的值为 .参考答案说明:本评分标准每题给出了一种或几种解法供参考,如果考生的解法与本解答不同,参照本评分标准的精神给分.一、选择题(本大题共6小题,每小题2分,共12分)二、填空题(本大题共10小题,每小题2分,共20分)7.9 8.13 9.-3 10.y =-(x +2)2+3 11.2312.2π 13.m ≥-1 14. 2 2 15.322 16.4 2 -1三、解答题(本大题共11小题,共88分) 17.(8分)(1)解:x 2-4x -5=0 x 2-4x +4=5+4(x -2)2=9 ········································································································ 1分x -2=±3 ········································································································ 2分 ∴ x 1=5,x 2=-1. ··························································································· 4分 (2)解:x 2-4=2x (x -2) x 2-4=2x 2-4xx 2-4x +4=0 ··································································································· 5分 (x -2)2=0 ········································································································ 6分 ∴ x 1=x 2=2. ··································································································· 8分 18.(8分)(1)7;8 ········································································································ 2分 (2)s 2甲=(7-8)2+(7-8) 2+(10-8)2+(9-8)2+(7-8)25=1.6环2. ······························ 4分s 2乙=(8-8)2+(8-8) 2+ (7-8)2+(8-8)2+(9-8)25=0.4环2. ······································ 6分(3)选择乙.因为甲乙两人平均数相同均为8,说明两人实力相当,但s 2乙<s 2甲,乙的成绩更加稳定,所以选乙. ······················································································· 8分19.(8分)(1)14. ·········································································································· 2分(2)解:随机抽取两名运动员,共有6种等可能性结果:(甲,乙)、(甲,丙)、(甲,丁)、(乙,丙)、(乙,丁)、(丙,丁).其中满足“有甲运动员”(记为事件A )的结果只有3种,所以P (A )=12. ·································································································· 8分20.(7分)(1)证明:∵ ∠BCE +∠BDE =180°, ∠EDA +∠BDE =180°,∴ ∠EDA =∠BCE . ·························································································· 1分 又 ∠A =∠A , ································································································· 2分 ∴ △ADE ∽△ACB . ·························································································· 3分 (2)∵ △ADE ∽△ACB , ∴ AD AC =AE AB, ·········································· 4分 ∴AD AE =ACAB, ······································· 5分 又 ∠A =∠A , ········································ 6分 ∴ △AEB ∽△ADC . ································· 7分21.(8分)(1)将(0,3)、 (3,0)代入,得⎩⎨⎧3=c ,0=-9+3b +c································································································· 1分解得⎩⎨⎧c =3,b =2····································································································· 2分∴ y =-x 2+2x +3 ····························································································· 3分 ∴ 顶点坐标为(1,4) ························································································ 4分 (2)-1<x <3. ······························································································ 6分 (3)-2或0 ···································································································· 8分 22.(7分)(1)解:∵∠BAC =90°,AB =AC ,∴ ∠B =∠C =45°. ··························································································· 1分 ∴ 在△BDE 中,∠BED +∠BDE =180°-∠B =135°, ∵ ∠EDF =45°,∴ ∠BDE +∠CDF =135°,∴ ∠BED =∠CDF . ·························································································· 3分 ∵ ∠B =∠C ,∴ △EBD ∽△DCF . ·························································································· 5分 (2 ········································································································ 7分23.(8分)(1)解:设每千克的销售价增加x 元,根据题意,得(60+x -50) (60-2x )=750 ··················································································· 2分 ∴ x 1=5,x 2=15. ····························································································· 3分 60+5=65或60+15=75 ···················································································· 4分 答:销售单价为65或75元时获得利润750元. (2)解:每千克的销售价增加x 元,利润为w 元.w =(60+x -50) (60-2x ) ···················································································· 6分 =-2(x -10)2+800 ···························································································· 7分 ∵ a =-2<0,∴ 当x =10时,w 有最大值800. ········································································ 8分 60+10=70答:当销售单价为70元时获得最大利润,为800元. 24.(8分) (1)连接BD .∵ AB 为⊙O 的直径,CD ⊥AB ,∴ ⌒BC = ⌒BD , ························································· 1分 ∴ ∠BDC =∠BCD .∵ 四边形ABDE 为⊙O 的内接四边形,∴ ∠BDE +∠BAE =180°,即∠BDC +∠CDF +∠BAE ····· 2分∵ DE ⊥CD , ∴ ∠CDF =90°, ∴ ∠BDC +∠BAE =90°.∵ ∠BCD =∠F AE , ·························································································· 3分 ∴ ∠BAE +∠F AE =90°,即∠F AB =90°, ∴ AF ⊥AB . 又 点A 在⊙O 上,∴ AF 与⊙O 相切. ·························································································· 4分 (2)过点O 作OG ⊥DF 垂足为G . ∵ ∠F AB =∠D =∠APD =90°, ∴ 四边形APDF 是矩形, ∴ ∠F =90°.∵ ∠F AB =∠F =∠OGF =90°, ∴ 四边形AOGF 是矩形,∴ AF =OG ,AO =GF . ···················································· 5分 设OE =OA =r ,则GE =r -1.在Rt △OGE 中,由勾股定理得OG 2+GE 2=OE 2, ···················································· 6分 即4+(r -1)2=r 2, ···························································································· 7分 解得r =5 2 . ····································································································· 8分25.(8分)(1)令y =0,即(x -2)(x -m )=0 ········································································· 1分 ∴ x 1=2,x 2=m . ····························································································· 2分 当m =2时,x 1=x 2,方程有两个相等的实数根; 当m ≠2时,x 1≠x 2,方程有两个不等的实数根. ∴ 不论m 为何值,方程总有实数根;∴ 不论m 为何值,该函数的图像与x 轴总有公共点. ·············································· 3分 (2)m =2或m >3或m <-1. ··········································································· 6分 (3)-1<m <1或m >3. ·················································································· 8分 26.(8分)。
部编版语文九年级上学期期末专项复习:基础知识综合试卷(含答案)

部编版语文九年级上学期期末专项复习-基础知识综合学校:___________姓名:___________班级:___________考号:___________考试范围:九年级上、下册1.请运用积累的知识,完成后面小题。
文段一:“贤弟,你听我说,你如今回去,奉事父母,总以文章学业为主,人生世上,除了这事,就没有第二件可以出头。
……只要是有本事进了学,中了举人、进士,即刻就荣宗耀祖。
这就是《孝经》上所说的‘显亲扬名’,才是大孝,自身也不得受苦。
古语说得好,书中自有黄金屋,书中自有千钟sù,书中自有颜如玉。
”文段二:“功名到底是身外之物,德行是要紧的。
我看你在孝悌上用心,极是难得,却又不可因后来日子略过得顺利些,就添出一肚子里的势利见识来,改变了小时的心事。
我死之后,你一满了服,就急急的要寻一头亲事,总要穷人家的儿女,万不可贪图富贵,攀高结贵。
”(摘自吴敬梓《儒林外史》第十七回)(1)给加点的字注音,根据拼音写出相应的汉字。
奉事( ) 千钟sù( ) 孝悌( )(2)明清科举有童试、院试、乡试、会试、殿试五级,片段一提到的“举人”和“进士”分别通过的是()A.院试和乡试 B.乡试和会试 C.乡试和殿试 D.会试和殿试(3)这两段文字分别是和对匡超人的教导。
(4)匡超人并没有听取文段二中人物的教导,而是走向了虚伪狡诈、自私冷漠。
请结合原著,简要列举一例。
2.阅读下面语段,回答问题。
我是你簇新的理想,刚从神话的蛛网里挣脱;我是你雪被下古莲的胚芽;我是你挂着眼泪的笑wō﹔我是新刷出的雪白的起跑线;是绯红的黎明正在喷薄;——祖国啊!我是你的十亿分之一,是你九百六十万平方的总和;你以伤痕累累的乳房喂养了迷wǎng的我、深思的我、沸腾的我;那就从我的血肉之躯上去取得你的富饶、你的荣光、你的自由;——祖国啊,我亲爱的祖国!(1)依次给语段中加点的字注音,全都正确的一项是()A.zhèng hèn B.zhēng hèn C.zhèng hén D.zhēng hén(2)根据拼音写出正确的汉字。
九年级数学第一学期期末考试综合复习测试题(含答案)

九年级数学第一学期期末考试综合复习测试题(含答案)一.选择题(共10小题,每小题3分,共30分) 1.2022的相反数是( )A .2022B .2022-C .12022D .2022± 2.若代数式3125m x y -与822m nx y +-是同类项,则( )A .73m =,83n =-B .3m =,4n =C .73m =,4n =- D .3m =,4n =-3.下列四组线段中,能组成直角三角形的是( ) A .1a =,3b =,3c = B .2a =,3b =,4c = C .2a =,4b =,5c =D .3a =,4b =,5c = 4.如图所示,直线//a b ,231∠=︒,28A ∠=︒,则1(∠= )A .61︒B .60︒C .59︒D .58︒5.下列关于事件发生可能性的表述,正确的是( )A .“在地面向上抛石子后落在地上”是随机事件B .掷两枚硬币,朝上面是一正面一反面的概率为13C .在同批次10000件产品中抽取100件发现有5件次品,则这批产品中大约有500件左右的次品D .彩票的中奖率为10%,则买100张彩票必有10张中奖6.某校10名学生参加课外实践活动的时间分别为:3,3,6,4,3,7,5,7,4,9(单位:小时),这组数据的众数和中位数分别为( ) A .9和7 B .3和3 C .3和4.5 D .3和5 7.一个正多边形的每一个内角都是150︒,则它的边数为( ) A .6 B .9 C .12 D .158.若不等式组841x x x m +<-⎧⎨>⎩的解集是3x >,则m 的取值范围是( )A .3m <B .3mC .3m >D .3m9.已知关于x 的一元二次方程22(21)0x m x m --+=有实数根,则m 的取值范围是( ) A .14m 且0m ≠ B .14m C .14m < D .14m >10.如图1,一个扇形纸片的圆心角为90︒,半径为6.如图2,将这张扇形纸片折叠,使点A 与点O 恰好重合,折痕为CD ,图中阴影为重合部分,则阴影部分的面积为( )A .9632π-B .693π-C .91232π-D .94π二.填空题(共5小题,每小题3分,共15分) 11.将数据2022万用科学记数法表示为 .12.已知当3x =时,代数式35ax bx +-的值为20,则当3x =-时,代数式35ax bx +-的值是 .13.将抛物线229y x x =-+-向左平移2个单位,再向上平移1个单位后,得到的抛物线的解析式为 .14.已知ABC ∆中,点O 是ABC ∆的外心,140BOC ∠=︒,那么BAC ∠的度数为 .15.如图,在正方形ABCD 中,顶点(5,0)A -,(5,10)C ,点F 是BC 的中点,CD 与y 轴交于点E ,AF 与BE 交于点G ,将正方形ABCD 绕点O 顺时针旋转,每次旋转90︒,则第2023次旋转结束时,点G 的坐标为 .三.解答题(一)(共3小题,每小题8分,共24分) 16.计算(1)2()(2)x y x y x +--;(2)2219(1)244a a a a --÷--+.17.如图,90ACB ∠=︒,AC AD =.(1)过点D 作AB 的垂线DE 交BC 与点E ,连接AE .(尺规作图,并保留作图痕迹) (2)如果8BD =,10BE =,求BC 的长.18.如图,在四边形ABCD 中,AC 与BD 交于点O ,BE AC ⊥,DF AC ⊥,垂足分别为点E ,F ,且BE DF =,ABD BDC ∠=∠.求证:四边形ABCD 是平行四边形.四.解答题(二)(共3小题,每小题9分,共27分) 19.阳光中学为了丰富学生的课余生活,计划购买围棋和中国象棋供棋类兴趣小组活动使用,若购买3副围棋和5副中国象棋需要98元;若购买1副围棋和2副中国象棋需要36元.(1)求每副围棋和每副中国象棋各多少元;(2)阳光中学决定购买围棋和中国象棋共40副,总费用不超过538元,且围棋的副数不低于象棋的副数,问阳光中学有几种购买方案;(3)请求出最省钱的方案需要多少钱?20.我市某中学举行“中国梦⋅我的梦”的演讲比赛,赛后整理参赛学生的成绩,将学生的成绩分为A,B,C,D四个等级,并将结果绘制成如图所示的条形统计图和扇形统计图,但均不完整,请你根据统计图解答下列问题.(1)参加比赛的学生人数共有名,在扇形统计图中,表示“D等级”的扇形的圆心角为度,图中m的值为;(2)补全条形统计图;(3)组委会决定从本次比赛中获得A等级的学生中,选出两名去参加市中学生演讲比赛,已知A等级中男生只有1名,请用画树状图或列表的方法求出所选学生恰是一男一女的概率.21.22.某网店专售一款新型钢笔,其成本为20元/支,销售中发现,该商品每天的销售量y与销售单价x(元/支)之间存在如下关系:10400y x=-+,自武汉爆发了“新型冠状病毒”疫情该网店店主决定从每天获得的利润中抽出200元捐赠给武汉,同时又让顾客得到实惠,当销售单价定位多少元时,捐款后每天剩余利润为550元?五.解答题(三)(共2小题,每小题12分,共24分)22.如图,以点O为圆心,AB长为直径作圆,在O上取一点C,延长AB至点D,连接DC,过点A作O的切线交DC的延长线于点E,且DCB DAC∠=∠.(1)求证:CD是O的切线;(2)若6AD=,2:3BC CA=,求AE的长.23.如图,在平面直角坐标系中,直线33y x =--与x 轴交于点A ,与y 轴交于点C .抛物线2y x bx c =++经过A 、C 两点,且与x 轴交于另一点B (点B 在点A 右侧). (1)求抛物线的解析式;(2)若点M 是线段BC 上一动点,过点M 的直线ED 平行y 轴交x 轴于点D ,交抛物线于点E ,求ME 长的最大值及此时点M 的坐标; (3)在(2)的条件下:当ME 取得最大值时,在x 轴上是否存在这样的点P ,使得以点M 、点B 、点P 为顶点的三角形是等腰三角形?若存在,请直接写出所有点P 的坐标;若不存在,请说明理由.答案一.选择题1. B .2. D .3. D .4. C .5. C .6. C .7. C .8. B .9. B .10. C . 二.填空题11. 72.02210⨯.12. 30-.13. 228y x x =---.14. 70︒或110︒.15. (4,3)-. 三.解答题16.解:(1)2()(2)x y x y x +--22222x xy y xy x =++-- 2y =;(2)2219(1)244a a a a --÷--+ 23(3)(3)2(2)a a a a a ---+=÷-- 23(2)2(3)(3)a a a a a --=⋅---+ 23a a -=--. 17.解:(1)如图所示即为所求作的图形. (2)ED 垂直AB , 90ADE EDB ∴∠=∠=︒,在Rt BDE ∆中,22221086DE BE BD =-=-=, 在Rt ADE ∆和Rt ACE ∆中, AC ADAE AE =⎧⎨=⎩, Rt ADE Rt ACE(HL)∴∆≅∆, 6EC ED ∴==, 16BC BE EC ∴=+=.18.证明:ABD BDC ∠=∠, //AB CD ∴.BAE DCF ∴∠=∠.在ABE ∆与CDF ∆中, 90BAE DCF AEB CFD BE DF ∠=∠⎧⎪∠=∠=︒⎨⎪=⎩. ()ABE CDF AAS ∴∆≅∆. AB CD ∴=.∴四边形ABCD 是平行四边形.19.解:(1)设每副围棋x 元,每副中国象棋y 元,根据题意得:3598236x y x y +=⎧⎨+=⎩,∴1610x y =⎧⎨=⎩,∴每副围棋16元,每副中国象棋10元;(2)设购买围棋z 副,则购买象棋(40)z -副, 根据题意得:1610(40)538m m +-,40m z -,2023m ∴,m 可以取20、21、22、23则有:方案一:购买围棋20副,购买中国象棋20副方案二:购买围棋21副,购买中国象棋19副方案:购买围棋22副,购买中国象棋18副方案四:购买围棋23副,购买中国象棋17副由4种方案;(3)由上一问可知共有四种方案:方案一:购买围棋20副,购买中国象棋20副;方案二:购买围棋21副,购买中国象棋19副;方案三:购买围棋22副,购买中国象棋18副;方案四:购买围棋23副,购买中国象棋17副;方案一需要20162010520x x +=; 方案二需要21161910526x x +=; 方案三需要22161810532x x +=; 方案四需要23161710538x x +=; 所以最省钱是方案一,需要520元.20.(1)解:根据题意得:总人数为:315%20÷=(人), 表示“D 等级”的扇形的圆心角为43607220⨯︒=︒;C等级所占的百分比为8100%40% 20⨯=,所以40m=,故答案为:20,72,40.(2)解:等级B的人数为20(384)5-++=(人),补全统计图,如图所示:(3)解:根据题意,列出表格,如下:男女1女2男女1、男女2、男女1男、女1女2、女1女2男、女2女1、女2共有6种等可能结果,其中恰是一男一女的有4种,所以恰是一男一女的概率为42 63 =.21.解:由题意可得(20)(10400)200550x x--+-=解得125x=,235x=因为要让顾客得到实惠,所以25x=答:当销售单价定为25元时,捐款后每天剩余利润为550元.22.(1)证明:连接OC,OE,如图,AB为直径,90ACB∴∠=︒,即190BCO∠+∠=︒,又DCB CAD∠=∠,1CAD∠=∠,1DCB∴∠=∠,90DCB BCO ∴∠+∠=︒,即90DCO ∠=︒, CD ∴是O 的切线;(2)解:EC ,EA 为O 的切线, EC EA ∴=,AE AD ⊥, OC OA =, OE AC ∴⊥,90BAC EAC ∴∠+∠=︒,90AEO EAC ∠+∠=︒, BAC AEO ∴∠=∠, tan tan BAC AEO ∴∠=∠,∴23BC AO AC AE ==, Rt DCO Rt DAE ∆∆∽,∴23CD OC OA DA AE AE ===, 2643CD ∴=⨯=, 在Rt DAE ∆中,设AE x =,222(4)6x x ∴+=+, 解得52x =. 即AE 的长为52.23.解:(1)直线33y x =--与x 轴、y 轴分别交于点A 、C , (1,0)A ∴-,(0,3)C -抛物线2y x bx c =++经过点(1,0)A -,(0,3)C -, ∴103b c c -+=⎧⎨=-⎩,解得23b c =-⎧⎨=-⎩,∴抛物线的解析式为223y x x =--.(2)设(E x ,223)(03)x x x --<<,则(,3)M x x -, 222393(23)3()24ME x x x x x x ∴=----=-+=--+,∴当32x =时,94ME =最大,此时3(2M ,3)2-. (3)存在.如图3,由(2)得,当ME 最大时,则3(2D ,0),3(2M ,3)2-,32DO DB DM ∴===; 90BDM ∠=︒,223332()()222OM BM ∴==+=. 点1P 、2P 、3P 、4P 在x 轴上, 当点1P 与原点O 重合时,则1322PM BM ==,1(0,0)P ; 当2322BP BM ==时,则232632322OP -=-=, 2632(2P -∴,0); 当点3P 与点D 重合时,则3332P M P B ==,33(2P ,0); 当4322BP BM ==时,则432632322OP +=+=, 4632(2P +∴,0). 综上所述,1(0,0)P ,2632(2P -,0),33(2P ,0),4632(2P +,0).。
2025届河北省石家庄市赵县物理九年级第一学期期末复习检测试题含解析

2025届河北省石家庄市赵县物理九年级第一学期期末复习检测试题注意事项:1.答题前,考生先将自己的姓名、准考证号填写清楚,将条形码准确粘贴在考生信息条形码粘贴区。
2.选择题必须使用2B铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整、笔迹清楚。
3.请按照题号顺序在各题目的答题区域内作答,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。
4.保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。
一、选择题1.电路中获得持续电流的条件是()A.电路中存在大量的自由电子B.电路中电压必须足够大C.电路中有电源,且电路闭合D.电路中有电源,且有用电器2.铜的比热容是铅的的3倍.质量相同的铜块和铅块,若它们升高的温度之比为1∶2,则它们吸热之比为A.2∶3B.3∶2C.6∶1D.1∶63.甲、乙两个滑轮组如图所示,其中的每一个滑轮重力都相同,用它们分别将重物G1,G2提高相同的高度,不计滑轮组的摩擦与绳重,下列说法中正确的是()A.若G1=G2,拉力做的额外功相同B.若G1> G2,拉力做的总功相同C.若G1=G2,甲的机械效率大于乙的机械效率D.用甲、乙其中的任何一个滑轮组提起不同的重物,机械效率不变4.电焊利用电流的热效应熔化焊条.某型号的电焊机接在电压220V的家庭电路上,输出电压40V,输出功率2200W.编号为甲、乙、丙、丁的四种橡胶绝缘铜芯线在常温下安全载流量(长时间通电的最大安全电流)如下表所示.从安全的角度考虑,该电焊机的输出导线应该选用A.甲B.乙C.丙D.丁5.如图(a)所示电路中,闭合开关后,两个电压表指针偏转均如图(b)所示,则电阻R1和R2两端的电压分别为A.7 V 1.4V B.5.6V 1.4V C.1.4V 7V D.1.4V 5.6V6.关于家庭电路和安全用电,下列说法正确的是A.使用有金属外壳的用电器时,应将其外壳接在零线上B.家庭电路中,保险丝熔断后可用铜丝代替C.使用试电笔判断火线、零线时,手要按住笔尾金属体D.若空气开关“跳闸”,一定是因为用电器的总功率过大7.有两个定值电阻,分别标有“6V0.5A”和“12V1A”字样,当将它们串联在电路中时,电源电压不可超过A.6V B.12V C.18V D.24V8.关于燃料的热值,以下说法中正确的是()A.燃料燃烧时,质量越大,热值越大B.燃料不完全燃烧时的热值比完全燃烧时的热值小C.燃烧1千克某种燃料放出的热量叫这种燃料的热值D.燃料的热值与燃料的种类有关系,与燃料的质量和燃烧状况无关9.在使用图所示的插线板时发现:只有在开关闭合时,指示灯才能发光,插孔才可以提供工作电压:即使指示灯损坏,开关闭合时插孔也能提供工作电压.下图中插线板电路连接符合上述现象及安全用电要求的是()A.B.C.D.10.下列情况中,属于防止电热危害的是()A.用电熨斗熨烫衣服B.用电饭锅煮饭C.冬天用电暖气取暖D.电脑机箱内有小风扇11.小明同学设计的家庭电路如图所示,其中设计正确的是A .插座dB .开关cC .电灯bD .插座a12.如图所示,把重为G 的物体甲从A 点竖直向上匀速拉至B 点的过程中,绳的拉力对甲做的功为W AB ;用平行于斜面的拉力把重也为G 的物体乙沿斜面从C 点匀速拉至与B 等高的D 点,在此过程中的拉力对乙做的功为W CD ,斜面的机械效率为( )A .AB CD W W B .CD ABW W C .CD AB CDW W W - D .AB CD ABW W W + 二、填空题 13.汽车发动机一般是柴油机或汽油机等内燃机。
期末复习题 2023—2024学年统编版语文九年级上册

2023-2024年度上学期期末复习质量检测九年级语文试题卷一、单选题(本大题共3小题,共6分)1.下列有关作家作品的连线,不正确的一项是()A. 《我爱这土地》——艾青——《九三年》B. 《沁园春•雪》——毛泽东——革命家C. 《你是人间四月天》——林徽因——建筑学家、文学家D. 《水浒传》——施耐庵——元末明初2.下列加下划线的成语使用有错误的一项是()。
A. 泰州举办老街旅游文化节,各地游客纷至沓来B. 洪宗礼先生说,没有实践,教材编写便缺了源头活水C. 诈骗分子推陈出新,利用最新的市场漏洞,想出了新的诈骗手法D. 《朗读者》《见字如面》《经典咏流传》等文化类节目如一股股清泉,沁人心脾3.下列语句中没有语病的一项是()。
A. 汪国真的诗作曾点燃了一代人的青春梦想。
他猝然长逝,怎不让人扼腕叹息B. 通过我市举办的“名师好课”系列送教活动,促进了全市城乡教育的均衡发展C. “赣剧进校园”的成效并不显著,原因是对地方文化的重要性认识不足造成的D. 实施“校园足球计划”,旨在普及足球运动,进一步培养青少年足球运动水平二、默写(本大题共1小题,共4分)4.填空。
(1) 小时候,______ ,我在这头,母亲在那头。
而现在,______ ,我在这头,大陆在那头。
(2) 为什么我的眼里常含泪水?______(3) 毛泽东《沁园春·雪》中由写景到论史,起承上启下作用的句子是“______,______ ”。
(4) “月”是古诗词中的常见意象。
温庭筠在《商山早行》中描写月清霜冷的诗句是“______ ,______ ”;杜甫在《月夜忆舍弟》中流露月夜思乡之情的诗句是“______ ,______ ”。
三、综合题(本大题共1小题,共9分)5.阅读下面的文字,完成题目。
①毛泽东诗词纵览天下风云,俯瞰(kàn)历史兴衰,感受时光飞逝,把握时代潮流,反映了毛泽东的历史观和人生观,浸(jìn)透着历史智慧,洋溢..着壮志豪情。
江西省南昌市名校2025届化学九年级第一学期期末复习检测试题含解析

江西省南昌市名校2025届化学九年级第一学期期末复习检测试题注意事项:1.答题前,考生先将自己的姓名、准考证号填写清楚,将条形码准确粘贴在考生信息条形码粘贴区。
2.选择题必须使用2B铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整、笔迹清楚。
3.请按照题号顺序在各题目的答题区域内作答,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。
4.保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。
一、单选题(本大题共10小题,共20分)1.下列客观事实的微观解释正确的是A.凉开水不能养鱼是因为水中没有氧原子B.氯化钠溶液能导电是因为氯化钠由钠离子和氯离子构成C.一氧化碳能燃烧,二氧化碳能灭火是因为二者分子构成不同D.汞可做温度计的填充物是因为汞原子的体积受热变大,遇冷变小2.为了能及时发现煤气泄漏,常在煤气中加入少量有特殊气味的乙硫醇(C2H5SH),乙硫醇燃烧的化学方程式为:2C2H5SH+9O24CO2+2X+6H2O,则x的化学式为()A.S B.SO3C.CO D.SO23.下列各组变化中,每个转化在一定条件下均可一步实现的是()A.①②B.①③C.②③D.①②③4.下列物质的用途中,利用其物理性质的是()A.氢气作清洁燃料B.碳用于冶炼金属C.氧气用于切割金属D.干冰用于人工降雨5.下列物质的鉴别方法中,错误的是A.用水来鉴别氢氧化钠和硝酸铵固体B.用肥皂水鉴别硬水和软水C.用燃烧的木条鉴别氮气和二氧化碳D.观察颜色来区分铁丝和铜丝6.在pH=1的无色溶液中,下列离子能大量共存的组是()A.NO3-、Cu2+、Na+、SO42-B.Cl-、K+、OH-、Ba2+C.K+、SO42-、Na+、NO3-D.Ca2+、Cl-、CO32-、Na+7.下列关于水的说法正确的是()A.我国水资源丰富,人均水量位于世界前列B.自然界中,无色透明的水都可以直接饮用C.生活中常用煮沸的方法降低水的硬度D.水体有一定的自净功能,城市生活污水可直接排放8.下列有关实验现象措述正确的是A.镁条在空气中燃烧,发出白色火焰B.向硬水中加入肥皂水振荡,有大量浮渣C.电解水正极产生的气体,点燃产生淡蓝色火焰D.二氧化碳能使被石蕊溶液染成紫色的干燥纸花变红9.只用一种试剂一次性就能把氢氧化钠溶液、稀盐酸和氯化钠溶液鉴别开来,这种试剂是()A.石蕊溶液B.氯化钡溶液C.酚酞溶液D.硝酸银10.下列化学用语表达正确的是( )A.3S:“3” 表示三个硫元素B.CaCl2中Ca元素的化合价为-2价C.Mg+2“表示一个镁离子带两个单位正电荷D.CO2:“2” 表示一个二氧化碳分子中含有两个氧原子二、填空题(本大题共1小题,共4分)11.下图为某钙片的商品标签,请根据标签的有关信息完成下列各题:(1)主要成分碳酸钙(CaCO3)由______________种元素组成。
九年级语文上册期末复习测试题(含答案)

九年级语文上册期末复习测试题(含答案)一、积累与运用(26分)1.下列词语中加点字注音、字形全部正确的一项是()(2分)A.莅.临(wèi)余晖.(huī)迭.起(dié)合.颜悦色(hé)B.驾驭.(yù)亢.奋(kàng)元勋.(xūn)取义成仁.(rén)C.镐.头(gǎo)慢.游(màn)秀颀.(qín)风云变幻.(huàn)D.健.树(jiàn)旗帜.(zhì)妩.媚(fǔ)经.世奇才(jīng)2.下列词语书写完全正确的一项是()(2分)A.朗润矜持见义思迁家喻户晓B.遨游娴熟和颜悦色因地治宜C.斟酌荣膺人情世故相辅相成D.聪颖鼎盛穿流不息取义成仁3.下列句子中,加点词语使用最恰当...的一项是()A.车间一线的青年工人勤学苦练,对技术精益求精....,争当“青年岗位能手”。
B.志愿者在冬奥会闭幕式上向各国健儿挥手,言外之意....是:欢迎再来中国!C.果农们冒着炎热的天气奋战了好几个昼夜,轻而易举....地把水果销售一空。
D.市民陈先生参与毽子操、游泳、跳绳等多项全民云健身运动,各得其所....。
4.下列表述正确的一项是()(2分)A.“毛遂在平原君那里,三年也没有遇到施展才华的机会,于是他大胆自荐,并提出了一个观点。
”是一个表因果关系的复句B.《红楼梦》是我国古典小说的巅峰之作,叙述了以贾家为代表的四大家族的兴衰史,反映了封建社会广阔的社会现实。
C.明清科举制度,童生经过童试,录取人学后称为“进学”,也就成了秀才;秀才参加乡试,考中的是贡士。
D.《三国演义》是我国第一部章回体长篇历史演义小说,该书反映了三国时期政治腐败、生灵涂炭、农民起义、诸侯割据的社会现实。
5.下列句子没有语病的一项是()(2分)A.各地中小学要对延期开学期间学生居家学习的情况逐一进行诊断、摸底,精准掌握每个学生的学习情况。
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Ⅰ. 单项选择。
(15分)( ) 1. —Let’s go to see the show.—I _____ it. It’s very interesting.A. have seenB. seeC. am seeingD. had seen( ) 2. —It’s very hot, but quite wet today.—_____.A. So it isB. It is soC. So is itD. So it does( ) 3. A tsunami(海啸) _____in some southern Asian countries in December, 2004. _____ homeless people had to stay in the open air.A. has happened; Thousands ofB. happened; Thousands ofC. has happened; About twelve thousand ofD. happened; Twelve thousands( ) 4. —Did you have anyone _____ the trees?—Yes, I had the trees _____.A. to water; waterB. to be watered; wateredC. water; to be wateredD. water; watered( ) 5. As you see, the number of cars on the roads _____ these days.A. keeps risingB. keep risingC. keep to riseD. keeps to rise( ) 6. There are fifty students in our class. _____ of us _____ football.A. Two third; likesB. Two three; likeC. Two thirds; likesD.Two thirds; like( ) 7. —Do you know who _____ the tomb of Emperor Qin and who _____ the mobile phone?—No, but we may ask our teacher.A. discovered; inventedB. was discovered; was inventedC. invented; discoveredD. was invented; was discovered( ) 8. Don’t touch anything in the room _____ the hostess tells you to.A. ifB. thoughC. unlessD. even though( ) 9. —How do you like our city?—I think it’s becoming _____.A. more beautiful and more beautifulB. more and more beautifulC. beautiful and beautifulD. more beautiful and beautiful( ) 10. —We often use hotmail _____ e-mails.—Really? Would you please show me _____?A. to send; how to use itB. sending; what to useC. send; what can I useD. to be sent; why to use( ) 11. The river smells terrible. People must _____ dirty things into it.A. be stopped to throwB. be stopped from throwingC. stop to throwD. stop and throw( ) 12. I don’t know the answer _____ the question.A. toB. ofC. forD. with( ) 13. —Shall we go to see the wonderful movie this afternoon?—____A. You’re great!B. Great!C. Thank you.D. That’s all right.( ) 14. More _____ satellites must be sent up _____ space.A. man-made; intoB. manned-made; inC. man-made; inD. manned-made; into( ) 15. —Have you _____ had dumplings?—No, not _____.A. ever; yetB. ever; everC. yet; yetD. yet; everⅡ. 情景交际。
(5分)从方框中选出适当的句子补全对话,其中有两项是多余的。
A: It’s very late. Are you still on the computer?B: Well, yes. 16A: What kind of e-mails?B: Some are messages from my friends and some are from the relatives.A: Do you have to write them back right away?B: 17 Usually people want a quick reply.A: 18B: I’ve already had 40 people’s addresses in my address book! 19A:Ⅲ. 完形填空。
(10分)Canada is the second largest country in the world. It is over 7 000 kilometers from the21 coast to the east. It 22 six time zones. 23 it is 9 a.m. in Vancouver on the west coast, it is 1:30 p. m in Saint John on the east coast.English and French 24 the two main languages in Canada. About 60 percent of25 population speak French. More 26 70 percent of its population live in cities near the U.S. border(边境).Ottawa is the capital. Every year millions of tourists go there to 27 museums and take part in the cultural(文化的)activities. Toronto is the largest city of the country 28 about 2.5 million people. Montreal is 29 second biggest French-speaking city in the world.The maple(枫树) leaf is the national symbol of Canada. The Canadian flag has a red maple leaf on a red 30 white background.( ) 21. A. west B. east C. south D. north( ) 22. A. is B. had C. has D. have( ) 23. A. Which B. What C. Where D. When( ) 24. A. are B. is C. will be D. has been( ) 25. A. their B. his C. its D. our( ) 26. A. up B. over C. about D. than( ) 27. A. see B. visit C. look D. find( ) 28. A. with B. for C. from D. at( ) 29. A. a B. an C. the D. 不填( ) 30. A. or B. and C. but D. however Sue Glass had a car accident when she was eight. Her father tried to get home 61 the storm came. He drove fast and his car fell into the river when he was turning left. So she 62 driving after that.When she grew up, this was a problem, because she got a 63 in a car company. She sold cars there. Then six years later she met Julian Swayland, a racing driver, and she told him she was 64 of cars. He wanted to help her, so he took her to Brands Hatch, a Grand Prix racing circuit(巡回). He drove her round corners at 100 mph and she 65 it. Then she heard about a special motor racing course. She did the course with five men and she got top marks. It 66 them all. She said, “I think I did well because I listened to everything the 67 said. I needed to because I was so afraid. The men often didn’t listen. The best moment was my first championship race. I didn’t win but I came f orth. I 68 20 men, I love the excitement of motor racing but it’s a dangerous sport and I’m always very frightened. In fact, I stopped doing it one year ago, because I got so 69 before each race. I felt really sick. I’m not going to race again, I’m going to 70 a driving school next year.”61. 62. 63. 64. 65.66. 67. 68. 69. 70.。