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黔东南州2015—2016学年度第一学期七年级数学期末文化水平测试及答案

黔东南州2015—2016学年度第一学期七年级数学期末文化水平测试及答案

黔东南州2015—2016学年度第一学期期末文化水平测试七年级数学试卷(本试卷共26个小题,满分150分,考试时间120分钟)注意事项:1.答题时,务必将自己的姓名、准考证号填写在答题卡规定的位置上。

2.答选择题,必须使用2B 铅笔将答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦擦干净后,再选涂其它答案标号。

3.答非选择题时,必须使用0.5毫米黑色签字笔,将答案书写在答题卡规定的位置上。

4.所有题目必须在答题卡上作答,在试题卷上答题无效。

5.考试结束后,只需将答题卡交回,试题卷由考生自己留存。

一、选择题(每小题只有一个正确答案,请在答题卡选择题拦内用2B 铅笔将对应的题目标号涂黑每小题4分,共40分) 1、下列计算结果为负数的是A .13+-B .52-C .12-⨯(-)D .42-÷2、式子22132a b n x y m-+-,,-,中是整式的有 A .1个B .2个C .3个D .4个3、分别从一个几何体的正面、左面、上面观察得到的平面图形 如图所示,则这个几何体是 A .圆柱 B .圆锥 C .球D .棱柱4、下列各式中运算正确的是A .m m 523=+B .2222x x -= C .0=-ab abD .3y y y y =++5、下列方程中,解为5=x 的是A .532=+xB .110=xC .3)1(7=--xD .6213+=-x x6、下列说法错误..的是 A .π是有理数B .两点之间线段最短C .x x -2是二次二项式D .正数的绝对值是它本身7、已知21m x y+-与43y x n 是同类项,则nm 的值为 A .6B .9C .8D .5 8、若∠1+∠2=90°,∠1+∠3=90°,则A .∠2+∠3=180°B .∠2+∠3=90°C .∠2=∠3D .∠2-∠3=45°9、下列方程的变形中正确的是A .由263x +=-移项得236x =-+B .由321126x x -+-=去分母得(x -3)-(2x +1)=6 C .由2(x +1)-(x -1)=4去括号得2x +2-x +1=4 D .由47=x 系数化为1得47=x 10、用白铁皮做罐头盒,每张铁皮可制盒身15个,或制盒底42个,一个盒身与两个盒底配成一套罐头盒,现有108张白铁皮,怎样分配材料可以正好制成整套罐头盒?若设用x 张铁皮做盒身,根据题意可列方程为 A .()21510842x x ⨯-= B .15242(108)x x =⨯- C .()15108242x x -=⨯D .21542(108)x x ⨯=-二、填空题(每小题4分,共40分,答题请直接写在答题卡的相应位置。

云和县师院附中七年级数学下学期综合检测卷一新人教版

云和县师院附中七年级数学下学期综合检测卷一新人教版

2019年七年级数学下学期综合检测卷一、单选题(18分)1.(3分)若x>y,则下列式子中错误的是()A.x-5>y-5B.x+4>y+4C.D.-6x>-6y 2.(3分)实数2的算术平方根是()A.±B.C.4D.±43.(3分)如图,A,B的坐标为(2,0),(0,1),若将线段AB平移至A1B1,则a+b的值为()A.2B.3C.4D.5 4.(3分)下列命题中,真命题是()A.两个锐角的和一定是钝角B.相等的角是对顶角C.带根号的数一定是无理数D.垂线段最短5.(3分)若2m-4与3m-1是同一个数的平方根,则m的值是()A.-3B.-1C.1D.-3或1 6.(3分)下列关系中,互相垂直的两条直线是()A.互为对顶角的两角的平分线B.两直线相交成的四角中相邻两角的平分线C.互为补角的两角的平分线D.相邻两角的平分线二、填空题(18分)7.(3分)若a<b,则3a 3b,-a+1 -b+1,(m2+1)a (m2+1)b.(用“>”,“<”或“=”填空)8.(3分)已知a,b为两个连续整数,且,则a+b= .9.(3分)已知点P的坐标是(a+2,3a-6),且点P到两坐标轴的距离相等,则点P的坐标是.10.(3分)在平面直角坐标系中,横坐标、纵坐标都为整数的点称为整点,观察图中每一个正方形(实线)四条边上的整点的个数,请你猜测由里向外第10个正方形(实线)四条边上的整点的个数.11.(3分)正方形木块的面积为5 m2,则它的周长为m.12.(3分)如果点P(x,y)的坐标满足x+y=xy,那么称点P为“和谐点”;若某个“和谐点”P到x轴的距离为2,则P点的坐标为.三、解答题(84分)13.(6分)解不等式:,并把解集表示在数轴上.14.(6分)解不等式组:并写出所有的非负整数解.15.(6分)计算:.16.(6分)作图题:尺规作图,保留作图痕迹.如图,已知三角形ABC和给出的∠MB′N,∠MB′N=∠ABC.(1)在射线B′N上截取B′C′=BC.(2)在B′C′上方作∠EC′B′=∠ACB,C′E与B′M相交于点A′.17.(6分)某汽车专卖店销售A、B两种型号的新能源汽车,上周售出1辆A型车和3辆B 型车,销售额为66万元;本周已售出2辆A型车和1辆B型车,销售额为42万元.(1)求每辆A型车和B型车的售价各为多少万元.(2)甲公司拟向该店购买A、B两种型号的新能源汽车共6辆,且购车费不超过84万元,问最多可以购多少辆B型号的新能源汽车?18.(8分)求不等式组的整数解.19.(8分)计算:20.(8分)在平面直角坐标系xOy中,已知点A(a,a),B(a,a-3),其中a为整数.点C 在线段AB上,且点C的横纵坐标均为整数.(1)当a=1时,画出线段AB.(2)若点C在x轴上,求出点C的坐标.(3)若点C纵坐标满足1,直接写出a的所有可能取值:.21.(9分)如图,已知AB∥CD,点E是直线AB上一个定点,点F在直线CD上运动,设∠CFE=α,在线段EF上取一点M,射线EA上取一点N,使得∠ANM=160°.(1)当∠AEF=时,α=.(2)当MN⊥EF时,求α.(3)作∠CFE的角平分线FQ,若FQ∥MN,直接写出α的值:.22.(9分)我们把形如x2=a(其中a是常数且a≥0)这样的方程叫做x的完全平方方程.如x2=9,(3x-2)2=25,()2=4…都是完全平方方程.那么如何求解完全平方方程呢?探究思路:我们可以利用“乘方运算”把二次方程转化为一次方程进行求解.如:解完全平方方程x2=9的思路是:由(+3)2=9,(-3)2=9可得x1=3,x2=-3.解决问题:(1)解方程:(3x-2)2=25.解题思路:我们只要把3x-2看成一个整体就可以利用乘方运算进一步求解方程了.解:根据乘方运算,得3x-2=5或3x-2= .分别解这两个一元一次方程,得x1=,x2=-1.(2)解方程.23.(12分)解下列方程组:(1).(2).答案一、单选题1.【答案】D【解析】∵x>y,∴x-5>y-5,x+4>y+4,x>y,-6x<-6y;D错误.故答案为:D.2.【答案】B【解析】∵()2=2,∴2的算术平方根是.故答案为:B。

2016年连云港初中毕业暨升学考试试卷【WORD版含答案】

2016年连云港初中毕业暨升学考试试卷【WORD版含答案】

港云连的丽美连云港市2016年初中毕业暨升学考试数学试题参考公式:抛物线()02≠++=a c bx ax y 的顶点坐标为 ⎝⎛-a b2,⎪⎪⎭⎫-a b ac 442 一、选择题(本大题共有8小题,每小题3分,共24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,请将正确选项前的字母代号填涂在答题卡相应位置.......上。

) 1.有理数1-,2-,0,3中,最小的数是A .1-B .2-C .0D .32.据市统计局调查数据显示,我市目前常住人口约为4470000人,数据“4470000”用科学记数法可表示为A .61047.4⨯ B .71047.4⨯ C .710447.0⨯ D .410447⨯ 3.右图是一个正方体的平面展开图,把展开图折叠成正方体后,“美”字一面相对面是的字是A .丽B .连C .云D .港4.计算:=-x x 35A .x 2B .22x C .x 2- D .2- 5.若分式21+-x x 的值为0,则 (第3题图) A .2-=x B .0=x C .1=x D .1=x 或2-6.姜老师给出一个函数表达式,甲、乙、丙三位同学分别正确指出了这个函数的一个性质。

甲:函数图像经过第一象限;乙:函数图像经过第三象限;丙:在每一个象限内,y 值随x 值的增大而减小。

根据他们的描述,姜老师给出的这个函数表达式可能是A .x y 3=B .xy 3=C .x y 1-=D .2x y =7.如图1,分别以直角三角形三边为边向外作等边三角形,面积分别为1S 、2S 、3S ;如图2,分别以直角三角形三个顶点为圆心,三边长为半径向外作圆心角相等的扇形,面积分别为4S 、5S 、6S 。

其中161=S ,452=S ,115=S ,146=S ,则=+43S SA .86B .64C .54D .488.如图,在网格中(每个小正方形的边长均为1个单位)选取9个格点(格线的交点称为格点)。

人教版七年级上册试卷2016~2017学年度七年级上学期期中测试数学试卷.docx

人教版七年级上册试卷2016~2017学年度七年级上学期期中测试数学试卷.docx

2016~2017学年度七年级上学期期中测试数学试卷一、选择题(共10小题,每小题3分,共30分) 1.在-0.25、+2.3、0、23-这四个数中,最小的数是( ) A .-0.25B .+2.3C .0D .23-2.计算(-3)3的结果是( ) A .-9B .9C .-27D .273.x =-1是下列哪个方程的解( ) A .x -5=6B .6221=+x C .3x +1=4 D .4x +4=04.32-的相反数是( ) A .23-B .23 C .32 D .32-5.下列计算正确的是( ) A .-2(a +b )=-2a +b B .-2(a +b )=-2a -b C .-2(a +b )=-2a -2bD .-2(a +b )=-2a +2b6.下列说法中正确的是( )A .单项式532xy 的系数是3,次数是2B .单项式-15ab 的系数是15,次数是2C .21-xy 是二次单项式D .多项式4x 2-3的常数项是37.小新出生时父亲28岁,现在父亲的年龄是小新的3倍,现在小新的年龄是( )岁 A .14B .15C .16D .178.代数式y 2+2y +7的值是6,则4y 2+8y -5的值是( ) A .9B .-9C .18D .-189.下列说法中正确的是( ) A .任何数都不等于它的相反数 B .若|x |=2,那么x 一定是2C .有比-1大的负整数D .如果a >b >1,那么a 的倒数小于b 的倒数10.如果a +b +c =0,且|a |>|b |>|c |,则下列说法中可能成立的是( ) A .a 、b 为正数,c 为负数 B .a 、c 为正数,b 为负数 C .b 、c 为正数,a 为负数D .a 、c 为正数,b 为负数二、填空题(本大题共6个小题,每小题3分,共18分)12.我国邻水的面积约为370000 km 2,用科学记数法表示为__________km 2 13.若单项式3ab m 和-4a n b 是同类项,则m +n =__________14.学校里男生人数占学生总数的60%,女生人数是a ,学生总数是__________人15.一艘船从甲码头到乙码头顺流而行,用了3小时,从乙码头返回甲码头逆流而上,多用了1.5小时.已知水流的速度是4 km /h ,设船在静水中的平均速度为x km /h ,可列方程为____________16.在一次数学游戏中,老师在A 、B 、C 三个盘子里分别放了一些糖果,糖果数依次为a 0、b 0、c 0,记为G 0=(a 0,b 0,c 0).游戏规则如下:若三个盘子中的糖果数不完全相同,则从糖果数最多的一个盘子中拿出两个,给另外两个盘子各放一个记为一次操作.若有两个盘子中的糖果数相同,且都多于第三个盘子中的糖果数,则从这两个盘子字母序在前的盘子中取糖果;若三个盘子中的糖果数相同,游戏结束,n 次操作后的糖果数记为G n =(a n ,b n ,c n ).小明发现:若G 0(4,8,18),则由此永远无法结束,那么G 2016=__________ 三、解答题(共8题,共52分)17.(本题12分)计算:(1) 16+(-25)+24+(-35) (2) )412()211()43(-÷-⨯-(3) 1283)3()5(23÷---⨯ (4) |-10|+|(-4)2-(1-32)×2|18.(本题4分)先化简,再求值:3x2-[7x-(4x-3)-2x2],其中x=519.(本题6分)解方程:(1) 3x+7=32-2x(2) 2-3(x+1)=1-2(1+0.5x)20.(本题8分)某文具店在一周的销售中,盈亏情况如下表(盈余为正,单位:元)表中星期六的盈亏数被墨水涂污了,请你算出星期六的盈亏数,并说明星期六是盈还是亏?盈亏是多少?21.(本题5分)甲地的海拔高度是h m,乙地的海拔高度是甲地海拔高度的3倍多20 m,丙地的海拔高度比甲地的海拔高度低30 m,列式计算乙、丙两地的高度差22.(本题6分)四人做传数游戏,小郑任报一个数给小丁,小丁把这个数加1传给小红,小红再把所得的数乘以2后传给小童,小童把所听到的数减1报出答案(1) 如果小郑所报的数为x,请把小童最后所报的答案用代数式表示出来(2) 若小郑报的数为9,则小童的答案是多少?(3) 若小童报出的答案是15,则小郑传给小丁的数是多少?23.(本题6分)有理数a 、b 在数轴上的对应点位置如图所示(1) 用“<”连接0、-a 、-b 、-1(2) 化简:|a |-2|a +b -1|-31|b -a -1|(3) 若a 2c +c <0,且c +b >0,求cb ac b a c c c c +-+----+++||1|1|1|1|的值24.(本题8分)如图,在数轴上每相邻两点间的距离为一个单位长度,点A 、B 、C 、D 对应的数分别是a 、b 、c 、d ,且d -2a =14(1) 那么a =__________,b =__________(2) 点A 以3个单位/秒的速度沿着数轴的正方向运动,1秒后点B 以4个单位/秒的速度也沿着数轴的正方向运动.当点A 到达D 点处立刻返回,与点B 在数轴的某点处相遇,求这个点对应的数(3) 如果A 、B 两点以(2)中的速度同时向数轴的负方向运动,点C 从图上的位置出发也向数轴的负方向运动,且始终保持AB =32AC .当点C 运动到-6时,点A 对应的数是多少?武珞路中学2016~2017学年度七年级上学期期中测试数学试卷参考答案一、选择题(共10小题,每小题3分,共30分)二、填空题(共6小题,每小题3分,共18分) 11.向西走了60 m 12.3.7×105 13.214. a 2515.3(x +4)=(3+1.5)(x -4) 16.(10,11,9)16.提示:G 1(5,9,16)、G 2(6,10,14)、G 3(7,11,12)、G 4(8,12,10)、G 5(9,10,11)、 G 6(10,11,9)、G 7(11,9,10)、G 8(9,10,11)、…… 从第5个开始每3个一循环 三、解答题(共8题,共72分) 17.解:(1) -20;(2) 21-;(3) 13;(4) 42 18.解:原式=5x 2-3x -3=107 19.解:(1) x =5;(2) x =0 20.解:设星期六盈亏数为x-27.8+(-70.3)+200+138.1+(-8)+x +188=458,解得x =38 答:星期六盈利了38元 21.解:(2h +50)m 22.解:(1) 2x +1(2) 当x =9时,2x +1=19 (3) 当2x +1=15时,x =7 23.解:(1) -1<-b <0<-a(2) 由图可知:a <0,a +b -1<0,b -a -1>0∴原式=-a -2(-a -b +1)-31(b -a -1)=353534-+b a(3) ∵a 2c +c <0 ∴c <0 ∵c +b >0∴原式=1-1-(-1)=1 24.解:(1) 由图可知:d =a +8∵d -2a =14∴a +8-2a =14,a =-6,b =a -2=-8 (2) 由(1)可知:a =-6,b =-8,c =-3,d =2点A 运动到D 点所花的时间为38设运动的时间为t则A 对应的数为2-3(t -38)=10-3tB 对应的数为:-8+4(t -1)=4t -12 当A 、B 两点相遇时,10-3t =4t -12,t =722 ∴4t -12=74 答:这个点对应的数为74 (3) 设运动的时间为tA 对应的数为:-6-3tB 对应的数为:-8-4t∴AB =|-6-3t -(-8-4t )|=|t +2|=t +2 ∵AB =32AC . ∴AC =23AB =323+t ∵C 对应的数为-6∴AC =|-6-(-6-3t )|=|3t |=323+t ① 当3233+=t t ,t =2 ② 当03233=++t t ,t =32-,不符合实际情况∴t =2∴-6-3t =-12答:点A 对应的数为-12初中数学试卷桑水出品。

16年下学期县七年级期末考试数学答案

16年下学期县七年级期末考试数学答案

2016年下学期考试七年级数学试卷参考答案及评分标准一、(本题共8个小题,每小题5分,满分40分)二、(本题6个小题,每小题5分,满分30分)9. 4.4×109;10.3;11.5;12.30;13. 30°;14. 51.三、解答题(本题3个小题,每小题8分,共24分) 15.解:原式=3111()()2368-+⨯- ······································································· 4分 =81()68⨯-, ················································································ 6分 = 16- ························································································ 8分 16.解:略,答案x =2: ·················································································· 8分17. 解:OE 平分∠BOC . ················································································ 3分 理由:∠AOC +∠BOC =180°,OE 平分∠BOC ,OD 是∠AOC 的平分线,所以 2∠DOC +2∠EOC =180°,所以 ∠DOE =90°.(答案不唯一) ·············································· 8分四、解答题(本题3个小题,每小题10分,共30分)18.解:因为4331(0)ax x x a -+-≠与435b x x -+是同次多项式,所以4b = ··························································································· 3分 因为a 与多项式435b x x -+的常数项互为相反数,所以5a =-; ····················································································· 3分所以201720172017()(45)(1)a b +=-=- ··························································· 8分1=- ············································································· 10分19.解:(1)由题意可得,这次抽样调查的样本容量:30÷25%=120(人),················2分样本中对数学学习“比较喜欢”的学生有:120﹣18﹣30﹣6=66(人); ···4分(2)B所占的百分比是:66÷120×100%=55%,D所占的百分比是:6÷120×100%=5%,故补全的条形统计图与扇形统计图如下图所示:·······························································································(每处2分)10分20.解:设《汉语成语大词典》的标价为x元,则《中华上下五千年》的标价为(150﹣x)元, ···························································································2分依题意得:50%x+60%(150﹣x)=80, ·······················································5分解得:x=100, ···················································································8分150﹣100=50(元).···································································9分答:《汉语成语大词典》的标价为100元,《中华上下五千年》的标价为50元. ·· 10分五、解答题(本题12分)21.解:(1)等式两边都乘以或除以同一个数(除数不能为0).······························4分(2)设,,,,,,364x==. ··········································································· 12分9911六、(本题满分14分)22. 解:(1)由线段的和差,得6915AC AB BC =+=+=,239BC CD BD BD BD BD =+=+==;解得 3BD =. ·········································································· 2分 由线段的和差,得2315AC AE CE AE AE AE =+=+==;解得5AE =. ············································································ 4分 由线段的和差,得651BE AB AE =-=-=, ·································· 6分 314DE BE BD =+=+=. ····························································· 7分(2)因为由线段的和差,得CD BD BC +=,即2BD BD BC +=,13BD BC =. ············································································· 9分 由线段的和差,得AE EC AC +=,即2AE AE AC +=, 13AE AC =. ············································································ 11分 由线段的和差,得13BE AB AE AB AC =-=-. ····························· 12分 11112()33333BD BE BD AB AC BC AB AC BC AB AB AB =+=-+=--=-=, 因为AB a =,所以23DE a =. ······································································· 14分。

2016年河南省中招考试数学试卷

2016年河南省中招考试数学试卷

2016年河南省初中学业水平暨高级中等学校招生考试试卷数 学一、选择题(每小题 分,共 分)下列各小题均有四个答案,其中只有一个是正确的,将正确答案的代号字母填入题后括号内..31-的相反数是 (✌)31- ( )31 ( )3- ( )3.某种细胞的直径是 米,将 用科学记数法表示为 (✌)7105.9-⨯ ( )8105.9-⨯ ( )71095.0-⨯ ( )51095-⨯ .下列几何体是由 个相同的小正方体搭成的,其中主视图和左视图相同的是(✌) ( ) ( ) ( ).下列计算正确的是 (✌)228=- ( )()632=-( )22423a a a =- ( )()523a a =-.如图,过反比例函数)0(>=x xky 的图像上一点✌作✌⊥x 轴 于点 ,连接✌,若 △✌ ,则k 的值为(✌) ( ) ( ) ( ).如图,在△✌中,∠✌°,✌,✌ ☜垂直平分✌交✌于点☜,则 ☜的长为(✌) ( ) ( ) ( ).下表记录了甲、乙、丙、丁四名跳高运动员最近几次选拔赛成绩的平均数与方差:甲 乙 丙 丁 平均数(♍❍)    方差根据表中数据,要从中选择一名成绩好且发挥稳定的运动员参加比赛,应该选择【 】 (✌)甲 ( )乙 ( )丙 ( )丁.如图,已知菱形 ✌的顶点 ( ), ( ), 若菱形绕点 逆时针旋转,每秒旋转 °,则第 秒时, 菱形的对角线交点 的坐标为【 】(✌)( , ) ( )( , )( )(2, ) ( )( , 2) 二、填空题(每小题 分,共 分).计算:._________8)2(30=-- 如图,在□✌中, ☜⊥✌交对角线✌于点☜,若∠ °,则∠ 的度数是♉♉♉♉♉♉♉♉♉若关于x 的一元二次方程032=-+k x x 有两个不相等的实数根,则k 的取值范围♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉在“阳光体育”活动期间,班主任将全班同学随机分成了 组进行活动,则该班小明和小亮被分在同一组的概率是♉♉♉♉♉♉♉♉♉已知✌( ), ( )是抛物线c bx x y ++-=2上两点,该抛物线的顶点坐标是♉♉♉♉♉♉♉♉♉如图,在扇形✌中,∠✌°,以点✌为圆心, ✌的长为半径作⌒  交⌒✌ 于点  若 ✌,则阴影部分的面积为♉♉♉♉♉♉♉♉♉♉♉如图,已知✌∥ ,✌⊥ ,✌ 点☜为射线 上一个动点,连接✌☜,将△✌☜沿✌☜折叠,点 落在点 ′处, 过点 ′作✌的垂线,分别交✌, 于点 ,☠ 当点 ′为线段 ☠的三等分点时, ☜的长为♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉♉ 三、解答题(本大题共 个小题,满分 分)  ( 分)先化简,再求值:121)1(222++-÷-+x x x x x x ,其中x 的值从不等式组⎩⎨⎧<-≤-4121x x 的整数解中选取。

云和镇初级中学2018-2019学年七年级下学期数学期中考试模拟试卷含解析

云和镇初级中学2018-2019学年七年级下学期数学期中考试模拟试卷含解析

云和镇初级中学2018-2019学年七年级下学期数学期中考试模拟试卷含解析班级__________ 座号_____ 姓名__________ 分数__________一、选择题1、(2分)如果(a+1)x<a+1的解集是x>1,那么a的取值范围是()A. a<0B. a<﹣1C. a>﹣1D. a是任意有理数【答案】B【考点】不等式及其性质【解析】【解答】解:如果(a+1)x<a+1的解集是x>1,得a+1<0,a<-1.故答案为:B.【分析】由(a+1)x<a+1的解集是x>1,可知,将未知数的系数化为1时,不等号的方向改变,因此a+1<0,求解即可。

2、(2分)a与b是两个连续整数,若a<<b,则a,b分别是()A. 6,8B. 3,2C. 2,3D. 3,4【答案】C【考点】估算无理数的大小【解析】【解答】解:∵4<7<9,∴2<<3,∵a<<b,且a与b是两个连续整数,∴a=2,b=3.故答案为:C【分析】根号7的被开方数介于两个完全平方数4和9之间,根据算术平方根的意义,从而得出根号7应该介于2和3之间,从而得出答案。

3、(2分)若x,y均为正整数,且2x+1·4y=128,则x+y的值为()A. 3B. 5C. 4或5D. 3或4或5【答案】C【考点】同底数幂的乘法,幂的乘方与积的乘方,二元一次方程的解【解析】【解答】∵2x+1·4y=128,27=128,∴x+1+2y=7,即x+2y=6.∵x,y均为正整数,∴或∴x+y=4或5.【分析】根据题意先将方程转化为2x+1+2y=27,得出x+2y=6,再求出此方程的整数解即可。

4、(2分)如图,下列条件:①∠1=∠3;②∠2=∠3;③∠4=∠5;④∠2+∠4=180°中,能判断直线l1∥l2的有()A.1个B.2个C.3个D.4个【答案】C【考点】平行线的判定【解析】【解答】解:①∵∠1=∠3;,∴l1∥l2.故①正确;②由于∠2与∠3不是内错角也不是同位角,故∠2=∠3 不能判断l1∥l2. 故②错误;③∵∠4=∠5 ,∴l1∥l2.故③正确;④∵∠2+∠4=180°∴l1∥l2.故④正确;综上所述,能判断l1∥l2有①③④3个.故答案为:C.【分析】①根据内错角相等,两直线平行;即可判断正确;②由于∠2与∠3不是内错角也不是同位角,故不能判断l1∥l2.③根据同位角相等,两直线平行;即可判断正确;④根据同旁内角互补,两直线平行;即可判断正确;5、(2分)若正方形的边长是a,面积为S,那么()A.S的平方根是aB.a是S的算术平方根C.a=±D.S=【答案】B【考点】算术平方根【解析】【解答】解:∵a2=s,a>0,∴a=。

2016年升初考试试卷

2016年升初考试试卷

2016年升初考试试卷
一、语文
1. 阅读短文《春》,回答以下问题:
- 作者通过哪些细节描写了春天的景象?
- 短文中提到的“春姑娘”象征着什么?
2. 请根据以下词语,编写一段不少于200字的短文:
- 阳光、梦想、坚持
3. 古诗文默写:
- 请默写《静夜思》全诗。

二、数学
1. 计算题:
- 计算下列表达式的结果:\((3x^2 + 2x - 1) - (2x^2 - 3x + 1)\)。

2. 应用题:
- 某班级共有学生45人,其中男生人数是女生人数的1.5倍。

求男生和女生各有多少人?
3. 几何题:
- 一个长方形的长是宽的两倍,如果将长和宽都增加5厘米,那么面积将增加多少平方厘米?
三、英语
1. 阅读理解:
- 阅读下列短文,并回答后面的问题。

2. 完形填空:
- 阅读短文,从括号中选择正确的单词填入空白处。

3. 写作:
- 以“My School Day”为题,写一篇不少于80字的短文。

四、科学
1. 选择题:
- 下列哪个选项不是可再生能源?
- A. 太阳能
- B. 风能
- C. 核能
- D. 水能
2. 实验题:
- 描述一个简单的实验,用以证明植物的生长需要阳光。

五、社会
1. 简答题:
- 请简述我国的基本国情。

2. 论述题:
- 论述我国实行义务教育的意义。

结束语:
考生们,希望你们在考试中能够发挥出最佳水平,展现出你们的知识与智慧。

请仔细审题,认真作答,注意时间分配。

祝你们考试顺利,取得优异成绩。

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云和县2016年七年级学力测试卷英语试题卷(2016.05)考生须知:1.全卷满分100分,考试时间90分钟,试卷分试题卷和答题卷两部分。

2.请在答题卷上写上考生的姓名、学校、及准考证号。

全卷答案必须做在答题卷的相应位置上,做在试题卷上无效。

一、完形填空。

(共20小题,每小题1分,计20分)AOne day, a little girl leaves her home after a quarrel(吵架)with her mum. She walks for a long time. Then she sees a noodle shop. She is 1 , but she doesn’t have any money to buy a bowl of 2 .The shop owner is an old woman. She 3 the girl, “Do you want to have a bowl of noodles, my dear young lady?”“Yes, but I don’t have any money,”says the girl.“Don’t worry,” the woman says, and brings the girl a bowl of noodles very soon. The girl eats for a while and starts to 4 .“What’s the matter?” The woman asks.“I’m just 5 ! We don’t know each other but you cook noodles for me! Do you know that my own mother, after a quarrel, tells me to 6 the house.”“My dear young lady,7 can you think that way? I just cooked one bowl of noodles for you, but your mother cooks for you 8 . Why don’t you9 her?”The girl is surprised and goes home at once. Her mum is waiting for 10 for dinner. The girl comes to tears again.1. A. angry B. happy C. hungry D. sad2. A. noodles B. porridge C. riceD. dumplings3. A. meets B. tells C. seesD. asks4. A. smile B. say C. cry D. think5. A. moved B. excited C. angryD. sorry6. A. get into B. clean up C. get out ofD. run away from7.A. why B. what C. howD. who8. A. every day B. every year C. every monthD. every week9. A. help B. leave C. follow D. thank10. A. him B. her C. meD. usBA mouse ran over a lion’s face. The lion woke up and became very angry. He caught the mouse and wanted to 11 him. The mouse asked the lion in a 12 voice. “Please, if you free my life, I will repay(回报)your 13 one day.”The lion laughed and let the mouse go. He thought, 14 could a lion need a mouse’s help? 15 , a few days later, the lion was caught by some 16 . The hunters tied him up. The lion thought he was going to 17 . But the mouse helped the lion. He bit the rope with his 18 and set the lion free. The lion felt very 19 .When I said I could help you one day, you thought it was a joke. Now you see that 20 a little mouse can save a life.11. A. cut B. kill C. feed D. leave12. A. loud B. strong C. weak D. nice13. A. kindness B. help C. action D. sleep14. A. what B. when C. why D. how15. A. Luckily B. Finally C. ThenD. Unluckily16. A. people B. hunters C. mice D. farmers17. A. die B. live C. run D. fight18. A. legs B. hands C. teeth D. feet19. A. funny B. afraid C. thankful D. friendly20. A. even B. ever C. never D. if二、阅读理解。

(共40小题,其中21-30,41-50每小题2分,31-40每小题1分,计50分)AI went on vacation with my family last summer. We stayed in a house near the Chesapeake Bay. “Wake up! It’s time to go fishing.” My mom woke me up. After having breakfast we got on a boat. It was really nice because there were only a few people. Getting up at 6 a.m. was really early and I was not happy, but later, I had fun.My uncle caught(抓住)a big fish first. And my mom caught one, too. Then I caught a Black Drum. It was very heavy and it was difficult for me to take it. Next, my dad caught a big sheepshead. The captain said no one caught a big fish like this one. We were all happy when we heard this. Later we tried to catch small sharks (鲨鱼).My grandpa caught one, but it snapped the line(咬断绳子).My uncle caught one, but it also snapped the line. My dad caught one at last. It didn’t look so scary but was a little funny.Then our fishing activity was over, and we went back with all the fishes. We were tired but happy!21. What does the writer talk about?A. His summer vacation.B. His favorite fish.C. His favorite activity.D. His happy family.22. How many fishes did they catch at last according to the passage?A. 3.B. 5.C. 7.D. 9.B“Dreams may be more important than sleep. We all need to dream,”some scientists sayDreams take up about one quarter of our sleeping time. People have several dreams each night. Dreams are like short films. They are usually in color. Some dreams are like old films. They come to us over and over again. That may be because the dreaming is worrying about something. Dreaming may be a way of trying to find an answer.Some people get new ideas about their work from dreams. They may have been thinking about their work all day. These thoughts can carry over into dreams.Sometimes we wake up with a good feeling from a dream. But often we can’t remember the dream. Dreams can disappear quickly from memory.Too much dreaming can be harmful. The more we sleep, the longer we dream. The mind is hard at work when we dream. That is why we mayhave a long sleep and still wake up tired.23. Some people often dream about their work because _______________.A. they are tired in the daytimeB. they are not interested in their workC. they may be thinking about their work all dayD. they have too much work to do24. Which of the following sentence is TRUE?A. It is good to sleep longer.B .We will feel tired after a long dream.C. The mind isn’t work when we d ream.D. All people can find an answer of the work in the dream.25. The main idea of the story is _______________.A. what dream isB. people like to sleepC. dreams are like filmsD. we always remember dreamsCAmerican schools are quite different from those in China. In America, at beginning of the term, students must select(选择) their courses and teachers first.26 . So at the first term, don’t select too many courses, or you’ll feel very nervous and it may influence your study. Then you have to ask for some teaching plans. There is some information about subjects, time arranging, marks and textbooks.27 . Different teachers have different teaching methods. If the teacher is called “killer”by the last grade, many students will give up choosing him, because this kind of teacher will leave too much homework, too many exams and give too low grades.28 . How to buy textbooks makes each student feel hard. The textbooks in America are very expensive. Each copy is about $30~50. In order to save money, many students buy some used textbooks, and some students usually borrow textbooks from the school library.In class, discussing is very important. The teacher encourages you to ask/raise questions or show your own opinions/ideas. 29 . Instead they allow you to sit or stand everywhere you like. They don’t give you much homework to do. You can learn some knowledge and do exercises by yourself. 30 .请认真阅读文章,将以下的句子还原到原文中。

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