2018-2019学年度年第一学期期末考试卷
安徽省黄山市2018-2019学年高二上学期期末考试数学(文)试题 Word版含解析

黄山市2018~2019学年度第一学期期末质量检测高二(文科)数学试题第Ⅰ卷(选择题满分60分)一,选择题(本大题共12小题,每小题5分,共60分.在每小题给出地四个选项中,只有一项是符合题目要求地.)1.若直线a平行于平面α,则下面结论错误地是( )A. 直线a上地点到平面α地距离相等B. 直线a平行于平面α内地所有直线C. 平面α内有无数款直线与直线a平行D. 平面α内存在无数款直线与直线a成90°角【结果】B【思路】【思路】由题意,依据两直线地位置关系地判定,以及直线与平面地位置关系,逐一判定,即可得到结果.【详解】由题意,直线a平行于平面α,则对于A中,直线a上地点到平面α地距离相等是正确地。
对于B中,直线a与平面α内地直线可能平行或异面,所以错误。
对于C中,平面α内有无数款直线与直线a平行是正确地。
对于D中,平面α内存在无数款直线与直线a成90°角是正确地,故选D.【点睛】本题主要考查了空间中两直线地位置关系地判定,其中解答中熟记空间中两款直线地三种位置关系是解答地关键,着重考查了推理与论证能力,属于基础题.2.在空间直角坐标系中,点有关平面地对称点是( )A. B. C. D.【结果】D【思路】【思路】空间直角坐标系中任一点有关坐标平面地对称点为,即可求得结果【详解】依据空间直角坐标系中点地位置关系可得点有关平面地对称点是故选【点睛】本题考查了对称点地坐标地求法,解决此类问题地关键是熟练掌握空间直角坐标系,以及坐标系中点之间地位置关系,属于基础题。
3.已知,则“”是“直线与直线垂直”地( )A. 充分不必要款件B. 必要不充分款件C. 充要款件D. 既不充分也不必要款件【结果】A【思路】【思路】当时,判断两直线是否垂直,由此判断充分性,当两直线垂直时,依据两直线垂直地性质求出地值,由此判断必要性,从而得到结果【详解】充分性:当时,两款直线分别为:与此时两款直线垂直必要性:若两款直线垂直,则,解得故“”是“直线与直线垂直”地充分不必要款件故选【点睛】本题是一道相关充分款件和必要款件地题目,需要分别从充分性和必要性两方面思路,属于基础题。
人教版2018-2019学年第一学期七年级数学期末测试题(含答案)

2018-2019学年七年级(上)期末数学试卷一、选择题(本题共6个小题,每小题3分,共18分.)1.设a是一个负数,则数轴上表示数﹣a的点在()A.原点的左边B.原点的右边C.原点的左边和原点的右边D.无法确定2.在墙壁上固定一根横放的木条,则至少需要钉子的枚数是()A.1枚B.2枚C.3枚D.任意枚3.如图所示的几何体,从上面看得到的平面图形是()A.B.C.D.4.在灯塔O处观测到轮船A位于北偏西54°的方向,同时轮船B在南偏东15°的方向,那么∠AOB的大小为()A.69°B.111°C.141°D.159°5.将下面的直角梯形绕直线l旋转一周,可以得到如图立体图形的是()A.B.C.D.6.某商店把一种洗涤用品按标价的九折出售,仍可获利20%,若该洗涤用品的进价为21元,则标价为()元.A.26 B.27 C.28 D.29二、填空题(本大题共8个小题;每小题3分,共24分.把答案写在题中横线上)7.﹣5的相反数是,﹣的倒数是.8.若a3﹣2n b2与5a3n﹣2b2是同类项,则n=.9.青藏高原是世界上海拔最高的高原,它的面积约为2 500 000平方千米.将它的面积用科学记数法表示应为平方千米.10.计算:15°37′+42°51′=.11.根据图提供的信息,可知一个杯子的价格是元.12.用6根火柴最多组成个一样大的三角形,所得几何体的名称是.13.点A、B、C是同一直线上的三个点,若AB=8cm,BC=3cm,则AC=cm.14.填在下面各正方形中的四个数之间都有相同的规律,根据这种规律,m的值是.三、解答题(本大题共10个小题;共78分)15.计算(1)(﹣76)+(+26)+(﹣31)+(+17)(2)2(2b﹣3a)﹣3(2a﹣3b).16.解下列方程:(1)x﹣7=10﹣4(x+0.5);(2)﹣=1.17.如图所示,直线l是一条平直的公路,A,B是两个车站,若要在公路l上修建一个加油站,如何使它到车站A,B的距离之和最小,请在公路上表示出点P的位置,并说明理由.(保留作图痕迹,并用你所学的数学知识说明理由).18.(6分)(2015秋太和县期末)一个角的余角比这个角的少30°,请你计算出这个角的大小.19.先化简再求值:﹣2y3+(2x3﹣xyz)﹣2(x3﹣y3+xyz),其中x=1,y=2,z=﹣3.20.如图,∠AOB=110°,∠COD=70°,OA平分∠EOC,OB平分∠DOF,求∠EOF的大小.21.如图,点C在线段AB上,点M、N分别是AC、BC的中点.(1)若AC=8cm,CB=6cm,求线段MN的长;(2)若C为线段AB上任一点,满足AC+CB=a,其它条件不变,你能猜想MN的长度吗?写出你的结论并说明理由;(3)若C为直线AB上线段AB之外的任一点,且AC=m,CB=n,则线段MN的长为.22.一只小虫从某点P出发,在一条直线上来回爬行,假定把向右爬行的路程记为正数,向左爬行的路程记为负数,则爬行各段路程(单位:厘米)依次为:+5,﹣3,+10,﹣8,﹣6,+12,﹣10.(1)通过计算说明小虫是否回到起点P.(2)如果小虫爬行的速度为0.5厘米/秒,那么小虫共爬行了多长时间.23.如图(1)所示,∠AOB、∠COD都是直角.(1)试猜想∠AOD与∠COB在数量上是相等,互余,还是互补的关系.请你用推理的方法说明你的猜想是合理的.(2)当∠COD绕着点O旋转到图(2)所示位置时,你在(1)中的猜想还成立吗?请你证明你的结论.24.某天,一蔬菜经营户用60元钱从蔬菜批发市场批了西红柿和豆角共40㎏到菜市场去卖,西红柿和豆角这天的批发价与零售价如下表所示:问:他当天卖完这些西红柿和豆角能赚多少钱?品名西红柿豆角批发价(单位:元/kg) 1.2 1.6零售价(单位:元/kg) 1.8 2.52018-2019学年七年级(上)期末数学试卷参考答案与试题解析一、选择题(本题共6个小题,每小题3分,共18分.)1.设a是一个负数,则数轴上表示数﹣a的点在()A.原点的左边B.原点的右边C.原点的左边和原点的右边D.无法确定【考点】数轴.【分析】根据数轴的相关概念解题.【解答】解:因为a是一个负数,则﹣a是一个正数,二者互为相反数,﹣a在原点的右边.故选B.【点评】解答此题要用到以下概念:数轴的定义:规定了原点、正方向和单位长度的直线叫做数轴;(1)从原点出发朝正方向的射线上的点对应正数,相反方向的射线上的点对应负数,原点对应零.(2)在数轴上表示的两个数,正方向的数大于负方向的数.(3)正数都大于0,负数都小于0,正数大于一切负数.(4)若从点A向右移动|a|个单位,得到B,则B点坐标为A的坐标加|a|,反之B点坐标为A的坐标减|a|.2.在墙壁上固定一根横放的木条,则至少需要钉子的枚数是()A.1枚B.2枚C.3枚D.任意枚【考点】直线的性质:两点确定一条直线.【分析】根据直线的性质,两点确定一条直线解答.【解答】解:∵两点确定一条直线,∴至少需要2枚钉子.故选B.【点评】本题考查了直线的性质,熟记两点确定一条直线是解题的关键.3.如图所示的几何体,从上面看得到的平面图形是()A.B.C.D.【考点】简单组合体的三视图.【分析】根据所看位置,找出此几何体的三视图即可.【解答】解:从上面看得到的平面图形是两个同心圆,故选:B.【点评】此题主要考查了简单几何体的三视图,关键是要把所看到的棱都表示到图中.4.在灯塔O处观测到轮船A位于北偏西54°的方向,同时轮船B在南偏东15°的方向,那么∠AOB的大小为()A.69°B.111°C.141°D.159°【考点】方向角.【分析】首先计算出∠3的度数,再计算∠AOB的度数即可.【解答】解:由题意得:∠1=54°,∠2=15°,∠3=90°﹣54°=36°,∠AOB=36°+90°+15°=141°,故选:C.【点评】此题主要考查了方向角,关键是根据题意找出图中角的度数.5.将下面的直角梯形绕直线l旋转一周,可以得到如图立体图形的是()A.B.C.D.【考点】点、线、面、体.【专题】常规题型.【分析】面动成体.由题目中的图示可知:此圆台是直角梯形转成圆台的条件是:绕垂直于底的腰旋转.【解答】解:A、是直角梯形绕底边旋转形成的圆台,故A错误;B、是直角梯形绕垂直于底的腰旋转形成的圆台,故B正确;C、是梯形底边在上形成的圆台,故C错误;D、是梯形绕斜边形成的圆台,故D错误.故选:B.【点评】本题考查直角梯形转成圆台的条件:应绕垂直于底的腰旋转.6.某商店把一种洗涤用品按标价的九折出售,仍可获利20%,若该洗涤用品的进价为21元,则标价为()元.A.26 B.27 C.28 D.29【考点】一元一次方程的应用.【分析】设该商品的标价为x,则商品的售价为0.9x元,根据售价﹣进价=利润为等量关系建立方程求出其解即可.【解答】解:设该商品的标价为x,则商品的售价为0.9x元,由题意,得0.9x﹣21=21×20%,解得:x=28故选C.【点评】本题考查了销售问题的数量关系在生活实际问题的中的运用,一元一次方程的解法的运用,解答时运用售价﹣进价=进价×利润率建立方程是关键.二、填空题(本大题共8个小题;每小题3分,共24分.把答案写在题中横线上)7.﹣5的相反数是5,﹣的倒数是﹣2.【考点】倒数;相反数.【分析】根据只有符号不同的两个数互为相反数,可得一个数的相反数,根据乘积是1的两个数互为倒数,可得一个数的倒数.【解答】解:﹣5的相反数是5,﹣的倒数是﹣2,故答案为:5,﹣2.【点评】本题考查了倒数,分子分母交换位置是求一个数的倒数的关键.8.若a3﹣2n b2与5a3n﹣2b2是同类项,则n=1.【考点】同类项.【分析】根据同类项是字母相同,且相同的字母的指数也相同,可得答案.【解答】解:a3﹣2n b2与5a3n﹣2b2是同类项,3﹣2n=3n﹣2,n=1,故答案为:1.【点评】本题考查了同类项,相同的字母的指数也相同是解题关键.9.青藏高原是世界上海拔最高的高原,它的面积约为2 500 000平方千米.将它的面积用科学记数法表示应为 2.5×106平方千米.【考点】科学记数法—表示较大的数.【专题】应用题.【分析】把一个大于10的数写成科学记数法a×10n的形式时,将小数点放到左边第一个不为0的数位后作为a,把整数位数减1作为n,从而确定它的科学记数法形式.【解答】解:2 500 000=2.5×106平方千米.【点评】将一个绝对值较大的数写成科学记数法a×10n的形式时,其中1≤|a|<10,n为比整数位数少1的数.10.计算:15°37′+42°51′=58°28′.【考点】度分秒的换算.【分析】把分相加,超过60的部分进为1度即可得解.【解答】解:∵37+51=88,∴15°37′+42°51′=58°28′.故答案为:58°28′.【点评】本题考查了度分秒的换算,比较简单,要注意度分秒是60进制.11.根据图提供的信息,可知一个杯子的价格是8元.【考点】二元一次方程组的应用.【分析】仔细观察图形,可知本题存在两个等量关系,即一个水壶的价格+一个杯子的价格=43,两个水壶的价格+三个杯子的价格=94.根据这两个等量关系可列出方程组.【解答】解:设水壶单价为x元,杯子单价为y元,则有,解得.答:一个杯子的价格是8元.故答案为:8.【点评】解题关键是弄清题意,找到合适的等量关系,列出方程组.12.用6根火柴最多组成4个一样大的三角形,所得几何体的名称是三棱锥或四面体.【考点】认识立体图形.【分析】用6根火柴,要使搭的个数最多,就要搭成立体图形,即三棱锥.【解答】解:要使搭的个数最多,就要搭成三棱锥,这时最多可以搭4个一样的三角形.图形如下:故答案为:4,三棱锥或四面体.【点评】此题主要考查了认识立体图形,本题要打破思维定势,不要只从平面去考虑,要考虑到立体图形的拼组.13.点A、B、C是同一直线上的三个点,若AB=8cm,BC=3cm,则AC=11或5cm.【考点】比较线段的长短.【专题】分类讨论.【分析】分点B在点A、C之间和点C在点A、B之间两种情况讨论.【解答】解:(1)点B在点A、C之间时,AC=AB+BC=8+3=11cm;(2)点C在点A、B之间时,AC=AB﹣BC=8﹣3﹣5cm.∴AC的长度为11cm或5cm.【点评】分两种情况讨论是解本题的难点,也是解本题的关键.14.填在下面各正方形中的四个数之间都有相同的规律,根据这种规律,m的值是158.【考点】规律型:数字的变化类.【专题】压轴题;规律型.【分析】分析前三个正方形可知,规律为右上和左下两个数的积减左上的数等于右下的数,且左上,左下,右上三个数是相邻的偶数.因此,图中阴影部分的两个数分别是左下是12,右上是14.【解答】解:分析可得图中阴影部分的两个数分别是左下是12,右上是14,则m=12×14﹣10=158.故答案为:158.【点评】本题是一道找规律的题目,要求学生通过观察,分析、归纳发现其中的规律,并应用发现的规律解决问题.解决本题的难点在于找出阴影部分的数.三、解答题(本大题共10个小题;共78分)15.计算(1)(﹣76)+(+26)+(﹣31)+(+17)(2)2(2b﹣3a)﹣3(2a﹣3b).【考点】有理数的加法;整式的加减.【分析】(1)根据有理数的加法法则,即可解答.(2)先去括号,再合并同类项,即可解答.【解答】解:(1)(﹣76)+(+26)+(﹣31)+(+17)=﹣76﹣31+26+17=﹣107+43=﹣64.(2)2(2b﹣3a)﹣3(2a﹣3b)=4b﹣6a﹣6a+9b=13b﹣12a.【点评】本题考查了有理数的加法法则,解决本题的关键是熟记有理数的加法法则.16.解下列方程:(1)x﹣7=10﹣4(x+0.5);(2)﹣=1.【考点】解一元一次方程.【专题】计算题.【分析】(1)方程去括号,移项合并,把x系数化为1,即可求出解;(2)方程去分母,去括号,移项合并,把x系数化为1,即可求出解.【解答】解:(1)去括号得:x﹣7=10﹣4x﹣2,移项合并得:5x=15,解得:x=3;(2)去分母得:3x﹣3﹣6﹣4x=6,移项合并得:x=﹣15.【点评】此题考查了解一元一次方程,其步骤为:去分母,去括号,移项合并,把x系数化为1,求出解.17.如图所示,直线l是一条平直的公路,A,B是两个车站,若要在公路l上修建一个加油站,如何使它到车站A,B的距离之和最小,请在公路上表示出点P的位置,并说明理由.(保留作图痕迹,并用你所学的数学知识说明理由).【考点】作图—应用与设计作图.【分析】连接AB,与l的交点就是P点.【解答】解:如图所示:点P即为所求.【点评】此题主要考查了作图与应用作图,关键是掌握两点之间线段最短.18.(6分)(2015秋太和县期末)一个角的余角比这个角的少30°,请你计算出这个角的大小.【考点】余角和补角.【分析】设这个角的度数为x,根据互余的两角的和等于90°表示出它的余角,然后列出方程求解即可.【解答】解:设这个角的度数为x,则它的余角为(90°﹣x),由题意得:x﹣(90°﹣x)=30°,解得:x=80°.答:这个角的度数是80°.【点评】本题考查了余角的定义,熟记概念并列出方程是解题的关键.19.先化简再求值:﹣2y3+(2x3﹣xyz)﹣2(x3﹣y3+xyz),其中x=1,y=2,z=﹣3.【考点】整式的加减—化简求值;合并同类项;去括号与添括号.【专题】计算题.【分析】本题先将括号去掉,进行同类项合并,然后化简后,将值代入,即可求得结果.【解答】解:﹣2y3+(2x3﹣xyz)﹣2(x3﹣y3+xyz),其中x=1,y=2,z=﹣3.当x=1,y=2,z=﹣3时,原式=﹣3×1×2×(﹣3)=18.…(10分)【点评】本题考查整式的加减及化简求值,将式子进行同类项合并后,然后化简后即可求得结果.20.如图,∠AOB=110°,∠COD=70°,OA平分∠EOC,OB平分∠DOF,求∠EOF的大小.【考点】角平分线的定义.【专题】计算题.【分析】由∠AOB=110°,∠COD=70°,易得∠AOC+∠BOD=40°,由角平分线定义可得∠AOE+∠BOF=40°,那么∠EOF=∠AOB+∠AOE+BOF.【解答】解:∵∠AOB=110°,∠COD=70°∴∠AOC+∠BOD=∠AOB﹣∠COD=40°∵OA平分∠EOC,OB平分∠DOF∴∠AOE=∠AOC,∠BOF=∠BOD∴∠AOE+∠BOF=40°∴∠EOF=∠AOB+∠AOE+∠BOF=150°.故答案为:150°.【点评】解决本题的关键利用角平分线定义得到所求角的两边的角的度数.21.如图,点C在线段AB上,点M、N分别是AC、BC的中点.(1)若AC=8cm,CB=6cm,求线段MN的长;(2)若C为线段AB上任一点,满足AC+CB=a,其它条件不变,你能猜想MN的长度吗?写出你的结论并说明理由;(3)若C为直线AB上线段AB之外的任一点,且AC=m,CB=n,则线段MN的长为|m﹣n|.【考点】比较线段的长短.【专题】计算题.【分析】(1)点M是线段AC中点,则MC=AC,点N的线段BC中点,所以CN=CB,AC+BC=AB,AB已知,从而可求出MN长度.(2)根据以上分析可得MN=AB,线段MN的长度是线段AB的一半.(3)当点C在线段AB的延长线上时,MN等于MC减去BC=n,而MC=AC=m,从而可求出MN长度;当点C在线段BA的延长线上时,MN等于NC减去MC,NC=BC=n,MC=AC=m,从而可求出MN的长度.【解答】解:(1)MN=MC+CN=AC CB=7cm;(2)MN=MC+CN=AC=;(3)当点C在线段AB的延长线上时,MN=(m﹣n);当点C在线段BA的延长线上时,MN=(n﹣m);综合以上情况得:MN=.【点评】本题前两问主要根据题中图形得到各线段之间的关系,求出MN的长度,而第三问要分情况讨论,M在AB不同侧时有不同的情况,分析各情况得到MN的表达式.22.一只小虫从某点P出发,在一条直线上来回爬行,假定把向右爬行的路程记为正数,向左爬行的路程记为负数,则爬行各段路程(单位:厘米)依次为:+5,﹣3,+10,﹣8,﹣6,+12,﹣10.(1)通过计算说明小虫是否回到起点P.(2)如果小虫爬行的速度为0.5厘米/秒,那么小虫共爬行了多长时间.【考点】有理数的加减混合运算;正数和负数.【专题】应用题.【分析】(1)把记录到得所有的数字相加,看结果是否为0即可;(2)记录到得所有的数字的绝对值的和,除以0.5即可.【解答】解:(1)∵(+5)+(﹣3)+(+10)+(﹣8)+(﹣6)+(+12)+(﹣10),=5﹣3+10﹣8﹣6+12﹣10,=0,∴小虫能回到起点P;(2)(5+3+10+8+6+12+10)÷0.5,=54÷0.5,=108(秒).答:小虫共爬行了108秒.【点评】此题主要考查正负数在实际生活中的应用,所以学生在学这一部分时一定要联系实际,不能死学.23.如图(1)所示,∠AOB、∠COD都是直角.(1)试猜想∠AOD与∠COB在数量上是相等,互余,还是互补的关系.请你用推理的方法说明你的猜想是合理的.(2)当∠COD绕着点O旋转到图(2)所示位置时,你在(1)中的猜想还成立吗?请你证明你的结论.【考点】余角和补角.【分析】(1)根据直角的定义可得∠AOB=∠COD=90°,然后用∠AOD和∠COB表示出∠BOD,列出方程整理即可得解;(2)根据周角等于360°列式整理即可得解.【解答】解:(1)∠AOD与∠COB互补.理由如下:∵∠AOB、∠COD都是直角,∴∠AOB=∠COD=90°,∴∠BOD=∠AOD﹣∠AOB=∠AOD﹣90°,∠BOD=∠COD﹣∠COB=90°﹣∠COB,∴∠AOD﹣90°=90°﹣∠COB,∴∠AOD+∠COB=180°,∴∠AOD与∠COB互补;(2)成立.理由如下:∵∠AOB、∠COD都是直角,∴∠AOB=∠COD=90°,∵∠AOB+∠BOC+∠COD+∠AOD=360°,∴∠AOD+∠COB=180°,∴∠AOD与∠COB互补.【点评】本题考查了余角和补角的定义,比较简单,用两种方法表示出∠BOD是解题的关键.24.某天,一蔬菜经营户用60元钱从蔬菜批发市场批了西红柿和豆角共40㎏到菜市场去卖,西红柿和豆角这天的批发价与零售价如下表所示:问:他当天卖完这些西红柿和豆角能赚多少钱?品名西红柿豆角批发价(单位:元/kg) 1.2 1.6零售价(单位:元/kg) 1.8 2.5【考点】二元一次方程组的应用.【专题】图表型.【分析】通过理解题意可知本题的两个等量关系,西红柿的重量+豆角的重量=40,1.2×西红柿的重量+1.6×豆角的重量=60,根据这两个等量关系可列出方程组.【解答】解:设西红柿的重量是xkg,豆角的重量是ykg,依题意有解得10×(1.8﹣1.2)+30×(2.5﹣1.6)=33(元)答:他当天卖完这些西红柿和豆角能赚33元.【点评】注意要先求出西红柿和豆角的重量,再计算利润.。
天津市部分区2018-2019学年高一上学期期末考试英语试卷

天津市部分区2018~2019学年度第一学期期末考试高一英语本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分第Ⅰ卷(三大题,共85分)第一部分:听力(共两节,满分20分)做题时,先将答案划在试卷上。
录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。
第一节(共5小题;每小题1分,满分5分)听下面五段对话。
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,你将有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. What happened to the man?A. He hurt his arm.B. He lost his books.C. He fell off his bike.2. What will the weather be probably like tomorrow?A. Cloudy.B. Rainy.C. Sunny.3. How much did the man’s uncle give him?A. $15.B. $35.C. $50.4. Where is the man’s English book?A. On the sofa.B. On the desk.C. On the floor.5. Where does the conversation take place?A. In a bookstore.B. In a library.C. In a classroom.第二节(共10小题;每小题1.5分,满分15分)听下面几段材料。
每段材料后有几个小题,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。
听每段材料前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段材料读两遍。
听下面一段对话,回答第6至第8小题。
6. What is the relationship between the speakers?A. Co-workers.B. Business partners.C. Schoolmates.7. Where does the man work?A. At a restaurant.B. In a school.C. At a travel agency.8. What are the speakers going to do next?A. Go to a café.B. Attend a meeting.C. Have dinner at a restaurant.听下面一段对话,回答第9至第11小题。
2018--2019学年度期末测试题

2018—2019学年度第一学期期末测试题一、选择题1、如图1所示,下列用电器的通过的电流最接近4A 的是 ( )2、图2是内燃机的某冲程工作示意图,以下改变内能方式与此相同的是( ) A .烤火取暖 B .搓手取暖 C .向手“呵气”取暖 D .用热水袋取暖3、关于温度、热量、内能,以下说法正确的是( ) A 、0℃的冰没有内能B 、物体温度升高,内能一定增加C 、物体的温度越低,所含的热量越小D 、物体的内能与温度有关,只要温度不变,物体的内能就一定不变4、家用电吹风由电动机和发热丝组成,都设有冷热两档,带扇叶的电动机产生风,电阻R 产生热,冷热风能方便转换,下面如图3中能正确反应电吹风机特点的电路图是( )A 、B 、C 、D 、 5、如图4所示的实例中,符合安全用电要求的是( )6、下列说法中正确的是( )A 、I=U/R 公式表示:在导体电阻一定时,通过导体的电流跟导体两端的电压成正比B 、R=U/I 公式表示:导体的电阻与其两端的电压成正比,与通过它的电流成反比C 、一个用电器工作时有电流通过,则该用电器两端电压可能为零D 、绝缘体一定有电阻,导体一定没有电阻7、如图5所示,是汽油机工作时的四个冲程,其中属于做功冲程的是(C )用湿布擦发光的灯电线靠近高温物体有人触电时立即切断电源A B C D图4 电暖电视在高压线附近玩耍 插座图2 图3 图58、下列关于电功和电功率的说法中正确的是( )A 、电流做功的过程,实际是把其他形式的能转化为电能的过程B 、电流通过导体时所做功的多少取决于导体两端的电压、通过导体的电流和导体的电阻C 、电流做功的快慢取决于用电器两端的电压和通过导体的电流D 、电功率越大的用电器,电流做功越多9、在某一温度下,连接在电路中的两段导体A 和B 中的电流与其两端电压的关系如下图6所示.由图中信息可知,下列说法错误的是:( ) A 、A 导体的电阻为10Ω B 、B 导体的电阻为10ΩC 、A 导体两端电压为3V 时,通过A 导体的电流为0.3AD 、B 导体两端电压为2V 时,通过B 导体的电流为0.4A10、如图7是自动测量油箱油量的装置图,其中电源电压恒定,R ′是定值电阻,R 是弧形变阻器,金属杠杆的一端是它的滑片.下列判断正确的是()A .油量表是电压表改装而成的B .R 和R ′是并联的C .油位越低,R 两端的电压越小D .油位越高,通过R 的电流越大 二、实验与探究 11、某小组的同学在探究“比较不同物质的吸热能力”时使用了如图所示装置。
2018-2019学年度第一学期八年级历史试题(含答案)

2018-2019学年度第一学期期末考试八年级历史试题(考试时间:60 分钟分值:100 分)注意事项:1.本试题分第Ⅰ卷和第Ⅱ卷两部分。
第Ⅰ卷为选择题,50分;第Ⅱ卷为非选择题,50分;共100分。
2.答卷前务必将自己的姓名.座号和准考证号按要求填写在答题卡上的相应位置。
3.第Ⅰ卷每题选出答案后,都必须用2B铅笔把答题卡上对应题目的答案标号(ABCD)涂黑,如需改动,必须先用橡皮擦干净,再改涂其它答案。
4.第Ⅱ卷必需用0.5毫米黑色签字笔书写到答题卡题号所指示的答题区域,不得超出预留范围。
第Ⅰ卷(选择题共50分)一、选择题:本大题共25小题,每小题2分,共50分。
在每小题所列出的四个选项中,只有一项是符合题意的。
1.“自今以后,大皇帝恩准英国人民带同所属家眷,寄居大清沿海之广州、福州、厦门、宁波、上海等五处港口,贸易通商无碍……”上述内容出自下列哪一条约?A.《南京条约》 B.《尼布楚条约》 C.《马关条约》 D.《辛丑条约》2.“到1860年,这个中华文明古国被西方彻底打败并羞辱了……俄国人则既强调贸易收益也强调取得领土。
”“到1860年”,俄国人“取得领土”的条约有①中俄《北京条约》②中俄《改订条约》③中俄《瑷珲条约》④中俄《辛丑条约》A.①② B.①③ C.②④ D.③④3.陈旭麓在《近代中国社会的新陈代谢》中评价近代某一文件时说:“它的价值是为近代思想史提供了一种农民的大同模式。
”这一文件是指A.《资政新篇》B.《天朝田亩制度》C.《北京条约》D.《虎门条约》4.《马关条约》的签订和3000万两白银的“赎辽费”,大大刺激了西方列强,它们在中国掀起了抢夺利权、强租海湾、划分“势力范围”的瓜分中国的狂潮。
当时德国在中国的“势力范围”是A.福建B.长江流域C.长城以北及新疆D.山东5.“中国的首都几次被西方的武装力量所占领,这是近代中国最痛苦的一个时期。
”“中国的首都”曾在下列哪两次战争中被“占领”①鸦片战争②第二次鸦片战争③甲午中日战争④八国联军侵华战争A.①② B.③④ C.②④ D.①③6.蒋廷黻在《中国近代史》中写道:“鸿章窃以为天下事穷则变,变则通……中国欲自强则莫如学习外国利器。
2018-2019学年最新人教版八年级语文第一学期期末考试试题(含答案)

2018-2019学年度上学期八年级期末语文测试卷考试时间120分钟,试卷满分100分第一部分、积累与运用(30分)I•请把下面的名言工整地抄写在方格里。
(2分)天行健,君子以自强不息。
□□□□□□□□□□□□2下列词语中加点字注音有错误的一项是()(3分)A、矜持(j m)濒临灭绝(b m)序幕(X⑪笼罩(l eng)B、淘汰(t①拾级而上(sh 0障碍zh M g) 搅拌(jic C、贿赂(I0水泄不通(xi ©掩映(y ing)秧苗(y mg)D、承诺(hu ©矢志不移(sh 1)灼伤(zhu。
遗传(y i)3下列词语中有错别字的一组是()(3 分)A、无所事事光彩熠熠歇斯底里针锋相对B、耿耿于怀风度翩翩得天独厚一席之地C 、劫后余生手当其冲刀耕火种危言耸听D错综复杂仗义执言大相径庭不言而4.依次填入横线上的词语,正确的一项是()(3分)1、他觉出其中有什么 ____ ,逼我立即拿来,我只好进屋把书拿出来。
2、为了追求光和热,有人宁愿 _____ 自己的生命。
生命是可爱的。
但寒冷的、寂寞的生,却不如轰轰烈烈的死。
3、最终,这位收买专利权的商人按照合同―了自己的诺言A .奥秘放弃实现B . 秘诀舍弃实现C .秘诀放弃履行D奥秘舍奔履行5、下列句子没有语病的一个是()(3分)A. 我们每个人都应该端正学习科学知识的目的。
B. 我们只有相信自己的能力,才能在各种考验前充满信心。
C •通过全班同学的共同努力,使我们班总成绩在年级组的排位有了大幅度提升。
D.球馆设施齐全,可为乒乓球爱好者提供球拍、球衣、球鞋和衣柜等乒乓器材。
6下面句子没有使用修辞方法的一项是()(3分)A •回望兰亭,难忘残园雨锁,难忘清波泛舟,难忘竹林漫步……B. 每到冬季,流动的飞瀑凝固成一根根冰柱,仿佛一把巨大的竖琴,奏出美妙的乐章。
C. 林子里候多地方还积着厚厚的雪,高山杜鹃花却早已耐不住性子,径自开了起来。
仁爱科普版2018-2019学年度第一学期九年级英语期末测试题

2018—2019学年度第一学期期末考试(试卷)九年级英语第一部分听力(25分)A.听句子(本题有5小题,每小题1分,共5分)根据所听句子的内容和所提的问题,选择符合题意的图画回答问题,并将答案写在答题卡上对应题目的地方,每小题听一遍。
( )1. Where will Tom go for holiday this year?A. B. C.( )2. How much was the shirt?A.B.C.( )3. What kind of sport may the woman like?A. B. C.( )4. Which sign is the speaker talking about?A.B.C.( )5. Who helped the speaker?A.B.C.B.听对话(本题有10小题,每小题1分,共10分)回答每段对话后面的问题,在每小题所给的三个选项中选出一个最佳答案,并将答案写在答题卡上对应题目的地方。
每段对话听两遍。
听第一段对话,回答第6小题( )6. What time will the woman arrive in Hong Kong?A. At 7:30.B. At 8:00.C. At 8:30.听第二段对话,回答第7小题( )7. What does the man think of the movie?A. Wonderful.B. Boring.C. Not bad.听第三段对话,回答第8小题( )8. Which subject does the boy like best?A. Maths.B. History.C. English.听第四段对话,回答第9小题( )9. Why DIDN’T Kate go to school?A. Because she had a sore throat.B. Because she had a cold.C. Because she had to help her mother.听第五段对话,回答第10小题( )10. How much did the boy pay for his bike?A. 320 yuan.B. 312 yuan.C. 330 yuan.听第六段对话,回答第11和12小题( )11. What are they going to do?A. To go shopping.B. To have a picnic.C. To visit the museum.( )12. How will they get there?A. By bike.B. By bus.C. On foot.听第七段对话,回答第13至15小题( )13. Where did the boy go last week?A. The Lianhua Mountain.B. The Baiyun Mountain.C. The Yuexiu Mountain.( )14. How long did it take to reach the top?A. One hour.B. One hour and a half.C. Two hours.( )15. What else did the boy do?A. Took photos.B. Went fishing.C. Went swimming.C.听短文(本题有5小题,每小题1分,共5分)请根据所听内容,在每小题给出的三个选项中,选出一个能完成句子的最佳答案,并将答案写在答题卡上对应题目的地方。
部编人教版2018-2019学年度第一学期九年级语文期末试卷及答案

2018-2019学年度第一学期期末质量检测试卷九年级语文(非寄)(总分150分)命题人:张贺峰一.语文积累及运用。
(38分)1.选择题(15分)①下列加点字注音完全正确的一项是( )(3分)A. 娉.婷(pīn) 妖娆.(ráo) 佝.偻(ɡǒu) 亵渎.(dú)B. 惊骇.(hé) 游弋.(yì) 宽宥.(yǒu) 麾.下(mó)C. 恣.雎(zì) 嗤.笑(chī) 栈.桥(zhàn) 箴.言(zhēn)D. 停滞.(chì) 豢.养(j uàn) 绾.发(guǎn) 箪.食(dān)②下列词语书写无误的一项是( )(3分)A. 逞能扩绰盘缠三顾茅芦B. 恪守尴尬盲从附庸风雅C. 拮据应酬即然前仆后继D. 秘决尴尬困厄子子不倦③下列句子中加点词语使用有误的一项是( )(3分)A. 亳州市的新老建筑和谐衬托,相得益彰,令人赏心悦目....。
B. 对这次集体活动,班主任郑重其事....地宣布了纪律。
C. 经过办案人员艰苦卓绝的工作,这件蹊跷的案子终于水落石出....。
D. 狂热的球迷们歇斯底里....地在场外为自己喜爱的队员呐喊加油。
④请选出下列句子中没有语病的一项是()(3分)A. 随着我市水质量的明显增加,全市上下居民治水的信心更加果断了。
B. 随着共享单车的广泛使用,怎样规范停放成为群众谈论热议的话题。
C. 来自中国、加拿大和美国的科学家团队首次在琥珀中发现了雏鸟标本。
D. 在深圳国际会展中心建成后,将成为世界上最大的会展中心。
⑤结合语境,下列句子中加点词语解释有误的一项是()(3分)A.“豆腐渣...”工程往往是腐败的孪生兄弟。
(豆腐渣:指质量差)B.时下,网络最流行的语言是“史上最牛人..”。
(牛人:指那些非常厉害让人赞叹或惊讶的人)C.“明星学院”吸引了不少的阳光少年....。
(阳光少年:指活泼、富有生气的少年)D.为了满足人们健康的需要,厂家纷纷推出了绿色食品....。
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A. Just right.B. Cold.C. Too hot.新课标第一学期高二期末考试英语试卷满分 150 分 考试时间: 120 分钟。
第I 卷第一部分 听力(共两节,每小题 1.5 分,满分 30 分)第一节 听下面五段对话。
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. What did Jim' s father take away from him?A. A camera.B. A computer. 2. What does the man suggest the woman do? A. Get some help.B. Try to avoid troubles.C. Finish her homework by herself.3. When does the mailman normally come? A. By 4:00. B. By 5:00.4. What does the man ask the woman to do?听下面 5 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,你将有时间来阅读各小题, 每小题 5 秒钟;听完后,各小题将给出 5 秒钟的作答时间。
每段对话或独白读两遍。
听第 6 段材料,回答 6 至 7 题。
6. What will the man leave tomorrow? A. At 12:00. B. At 7:00a.m.7. What day is it today? A. Thursday. B. Wednesday.听第 7段材料,回答 8至 9题8. How many people speak the Ainu language now? A. Over eighty. B. About sixty. C. About ten.9. Why is the Ainu language disappearing? A. The younger people aren rn 'ingt ilte.aB. All of the books in the language have been lost.C. The government doesn ' t encourage anyone to speak it.听第 8段材料,回答 10至 12题10. Who pays the heating bill? A. The man.B. The woma n.C. The speakers ' land 房东). 11. How does the man feel in his room?C. A cell phone.C. After 6:00.A. Get on her feet. 5. What is the woman A. A nurse. 第二节B. Get to work soon. s job?B. A doctor.C. Take a rest.C. A rich businesswoman.C. At 6:00a.m. C. Tuesday.20. How many women has ever been Secretary of State?A. One.B. Two.C. Three.第二部分:阅读理解(共两节,满分 40 分)第一节:阅读理解(共 15小题,每题 2分 共 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。
(NEW YORK) A French tourist highly praised for rescuing a two-year-old girl in Manhattan said he didn ' t think twice before diving into the freezing East River.Tuesday 'Dsaily News said 29-year-old Julien Duret from France was the man who left the spot quickly after the rescue last Saturday.He lifted the little girl out of the water after she fell off the bank at the South Street Seaport museum. He handed the girl to her father, David Anderson, who had dived in after him.“I didn 't think at all,” D auirlyetNtoelwdst.he “ It happened very fast. I reacted very fast.Duret, an engineer on vacation, was walking with his girlfriend along the pier( 码头 ) when he saw something falling into the water. He thought it was a doll, but realized it was a child when he approached the river. Immediately, he took off his coat and jumped into the water.When he reached the girl, she appeared lifeless, he said. Fortunately, when she was out of the water, she opened her eyes.Anderson said his daughter slipped off the bank when he was adjusting his camera. An ambulance came later for her,said Duret, who was handed dry clothes from onlookers. Duret12. What does the man tell the woman to do?A. Trade rooms with him.B. Keep the window closed.C. Go outside when she ' s too cold. 听 9 段材料,回答 13 至 16 题。
13. Where are the speakers probably?A. At the man ' s office.B. In a restaurant. 14. How many reports has the man just finished?A. Tow.B. Three.C. Outside a cinema. C. Four.15. What happened when they went to dinner last week? A. The restaurant had already closed. B. They were given a special price. C. They lost their way..16. When will the next movie start?A. At 6:00.B. At 7:00. 听 10 段材料,回答 17 至 20 题。
17. Where did Hillary Clinton go to school?A. University of Chicago.B. Harvard. 18. What did Hillary Clinton do after college?A. She taught law in a school.B. She worked at a hospital.C. She used her extra time to help the children..19. When did Hillary Clinton try to become the president?A. In 1992.B. In 2000.C. At8:00.C. Yale.C. In 2007.caught a taxi with his girlfriend shortly after.The rescue happened on the day before he left for France. Duret said he didn ' t realize hi story of heroism had greatly moved New York until he was leaving the city the next morning.“I don 't really think I 'm a hero, ” said Duret. “ Anyone would do the same thing. 21.Why was Duret in New York?A. To meet his girlfriend.B. To visit the Andersons.C. To work as an engineer.D. To spend his holiday.22.What did Duret do shortly after the ambulance came?A. He was interviewed by a newspaper.B. He disappeared from the spot quickly.C. He went to the hospital in the ambulance.D. He asked his girlfriend for his dry clothes.23.Which of the following is TRUE according to the passage?A. Duret dived into the water before the girl ' s father.B. Duret thought twice before he jumped into the cold water.C. The rescue happened on the day Duret left for France.D. Duret didn ' t think hebwraavse enough to be a hero.24.What is probably the headline of this news report?A. A Careless FatherB. A Poor GirlC. Brave Frenchman FoundD. Warm-hearted OnlookersBThe average American child spends three to five hours a day watching TV. In 1961, the average child began to watch television at age three; however, today it is nine months. Yet, most parents think that television has bad influence on their children. For example, in the early 1970s, my parents believed that my bad eyesight was the result of sitting too close to the screen, and they therefore made my stay at least six feet from it. Today, most people have no such worry, but many new ridiculous (荒谬的) sayings have appeared:*TV makes kids stupid. Many children watch more educational programs when they are pre-schoolers. When they grow up, they can read more books and have much better ideas to solve difficult problems than other children.*TV makes kids violent. The real story is not so simple. Hundreds of studies show that watching violence on TV makes children more aggressive (好斗的). But a study of over 5,000 children also finds that some positive programs make children kinder. The problem is that kids are increasingly watching shows with violence instead of those suitable for their age.*Sitting around watching TV makes kids overweight. An experiment finds that when children watch less television, they do lose extra weight; however, reducing their television time does not make them more active. The real problem lies in snacking (吃零食). A widespread habit for kids, and junk-food advertisements.*TV helps kids get to sleep. The opposite is true. The more television children watch, the more likely they are to have irregular sleep and nap(小睡) patterns. Allowing kids to watch television is part of the problem, not the solution.25. Which one is the advantage of educational TV programs?A. They will make children solve difficult problems better than others.B. they will improve children 's ability to get along with others.C. They are likely to make children more aggressive.D. They will make sure of children 's success in the future. 26. Why are children spending much time watching TV likely to be fat?A. Watching TV makes children lazy and inactive.B. Children are attracted by the food advertisement on TV.C. Watching TV doesn 't burn up as much fat as doing sports.D. Children like to snack while watching TV.27. What influence does watching TV have on a child 's sleep?A. Children are likely to sleep deeper after watching TV.B. Children 's sleep time will be greatly reduced.C. It will make children form a bad habit of sleeping.D. It will make children sleep easier. 28. What is the purpose of this text?A. To increase people 's knowledge of watching TV.B. To warn parents of the disadvantages of watching TV.C. To explain the bad influences that watching TV has on children.D. To correct parents 'wrong ideas of television 's effect on children.Is crying good therapy? Experts say yes. Having a good weep at the weekend is becoming more popular among office workers in China.“ Ineed to cry to let my feeling out, ”said 22-year-old Guo Meng, a smart-looking young woman. “I remember one day when I got home I felt so down but I had no one to talk to, so I ju st curled up (蜷缩)with my teddy bear and cried myself to sleep, ” Guo said. The n ext day, she said, she felt much better and life seemed not so bad after all.Because crying is taken as a sign of weakness, people make a great show of being strong and not displayingemotion. Psychologists and medical practitioners ( 从业者 ) agree that crying is beneficial for mental health but people still regard it as a sign of failure and bottle up their feelings. A famous Chinese author once said to cry is normal, and even brave. Those who display their emotions can deal with their troubles bravely after the tears dry, while those who soldier on (顽强地坚持下去) let problems fester (恶化) .In the Chaoyang district of Beijing, there is a special place for people to cry their sadness out. It is called “Cry Bar ”. On the door of each of its “cry rooms ” there is a saying encouraging p to let the tears flow freely.“Crying is a kind of therapy, but it needs some direction, ” said Milulu, a psychologist.“Peopleshould realize the point of crying is to relieve pressure, but some of the young people who come to the Cry Bar simply sit and weep. The purpose of crying is to make it easier to improve your life after the tears dry, not to get lost in bad memories. ”Crying is only one way of relieving pressure, and we need to face problems directly and solve them once the tears have dried, said Mululu. 29. Crying ____ made Guo Meng feel better.A. all the night with a toyB. in bed before sleepC. during her sleepD. with some friend30. According to the third paragraph, people usually make great efforts to ___A. get rid of their sadness C. act on psychologists ' advice31. What should the customers do at the Cry Bar?A. Think of every sad experience theyB. Keep crying as loudly as long as possible.C. Hold back their tears until they canD. Satisfy any desire to cry and weep until it is gone.32. From the text, we can learn that crying _ .A. means facing problems directlyB. must help to solve problemsC. is to relieve pressureD. can ' t weaken sad feelings.DMany people believe Henry Ford invented the automobile. But Henry Ford did not start to build his first car untilB. face their troubles bravely D. bottle up their feelings've had and cry 't help but cry.1896. That was eleven years after two Germans developed the world's first automobile. Many people believe Henry Ford invented the production line that moved a car's parts to the worker, instead of making the worker move to the parts. That is not true, either. Many factory owners used methods of this kind before Ford. What Henry Ford did was to use other people's ideas and make them better. And he made the whole factory a moving production line.In the early days of the automobile, almost every car maker raced his cars. It was the best way of gaining public notice. Henry Ford decided to build a racing car. Ford's most famous race was his first one. It was also the last race in which he drove the car himself.The race was in 1901, at a field near Detroit. All of the most famous cars had entered, but only two were left: the Winton and Ford. The Winton was famous for its speed. Most people thought the race was over before it began.The Winton took an early lead. But halfway through the race, it began to lose power. Ford started to gain. And near the end of the race, he took the lead. Ford won the race and defeated the Winton. His name appeared in newspapers and he became well- known all over the UnitedStates. Within weeks of the race, Henry Ford formed a new automobile company. In 1903, a doctor in Detroit bought the first car from the company. That sale was the beginning of Henry Ford's dream. Ford said: “ I will build a motor car for the great mass of people. It will be largeenough for the family, but small enough for one person to operate and care for. It will be built of the best materials. It will be built by the best men to be employed. And it will be built with the simplest plans that modern engineering can produce. It will be so low in price that no man making good money will be unable to own one. ”The Model T was a car of that kind. It only cost $850. It was a simple machine that drivers could depend on. Doctors bought the Model T. So did farmers. Even criminals. They considered it the fastest and surest form of transportation. Americans loved the Model T. They wrote stories and songs about it. Thousands of Model T's were built in the first few years.33. What do we know about Henry Ford from Paragraph 1 ?A. He made good use of ideas from others.B. He produced the first car in the world.C. He knew how to improve auto parts.D. He invented the production line.34. Why did Henry Ford take part in the 1901 car race?A. To show off his driving skills.B. To draw public attention.C. To learn about new technology.D. To raise money for his new company.35. What was Henry Ford's dream according to the text?A. Producing cars for average customers.B. Building racing cars of simple design.C. Designing more car models.D. Start ing more compa ni es.第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。