【解析】甘肃省武威第五中学、武威三中、武威期中、武威十六中2017-2018学年高一下学期期末联考英语试题
物理-甘肃省武威第十六中学2017-2018学年高二上学期期中考试试题(解析版)
甘肃省武威第十六中学2017-2018学年高二第一学期期中考试物理试卷一、选择题1. 下列对于点电荷的说法正确的是()A. 只有体积很小的带电体才能看成点电荷B. 体积很大的带电体一定不能看成点电荷C. 点电荷一定是电荷量很小的电荷D. 当两个带电体的大小及形状对它们之间的相互作用力的影响可以忽略时,这两个带电体可以看成点电荷2. 真空中放置两个点电荷,电量各为q1与q2,它们相距r时静电力大小为F。
若将它们的电量分别减为和,距离也变为,则它们之间的静电力大小是()A. FB. F/2C. 2FD. 4F3. 当在电场中某点放入电量为q的正试探电荷时,测得该点的场强为E,若在同一点放入电量为q′=2q的负试探电荷时,测得该点的场强()A. 大小为2E,方向与E相同B. 大小为E,方向与E相同C. 大小为2E,方向与E相反D. 大小为E,方向与E相反4. 如图a,b,c是一条电场线上的三个点,电场线的方向由a到c,a、b间的距离等于b、c间的距离。
用φa、φb、φc和Ea、Eb、Ec分别表示a、b、c三点的电势和电场强度,可以断定()A. φa-φb=φb-φcB. E a<E b<E cC. φa>φb>φcD. E a=E b=E c5. 如图所示,一电子沿等量异种电荷的中垂线由A→O→B匀速运动,电子重力不计,则电子所受电场力的大小和方向变化情况是( )A. 先变大后变小,方向水平向左B. 先变小后变大,方向水平向右C. 先变小后变大,方向水平向左D. 先变大后变小,方向水平向右6. 如图1所示,M、N是某电场中的一条电场线,若M点放置一初速度为零的质子,质子仅在电场力的作用下,由M运动到N的过程中的v—t图象如图2,则关于M、N两点的电势和电场强度的判断中正确的是()A. B.C. D.7. 一平行板电容器充电后与电源断开,负极板接地。
两板间有一个正电荷固定在P点,如图所示,以E表示两板间的场强,U表示电容器两板间的电压,Φ表示正电荷在P点的电势,E P表示正电荷在P点的电势能,若保持负极板不动,将正极板向下移到图示的虚线位置,则A. E变大B. E P不变C. Φ变大D. U不变8. 有两个定值电阻R1和R2,它们的I-U图线如右图所示,由图可知()A. B. C. D.9. 饮水机是一种常见的家用电器,其工作电路可简化为如图所示的电路,其中S是一温度控制开关,当水温升高到一定温度时,它会自动切换,使饮水机处于保温状态;R0是饮水机加热管的电阻,R是与加热管串联的电阻。
2017-2018学年甘肃省武威第五中学、武威三中、武威七中、武威十六中高一下学期期末联考数学试题
2017-2018学年甘肃省武威第五中学、武威三中、武威七中、武威十六中高一下学期期末联考数学试题一.选择题。
(共12小题,每小题5分,共60分) 1.cos300°= ( )A.12B.12-C. 2-D.22.设有一个回归方程32=-y x ,则变量x 增加一个单位时( ) A.y 平均增加2个单位 B.y 平均增加3个单位 C.y 平均减少2个单位 D.y 平均减少3个单位3.已知532()231=++++f x x x x x ,应用秦九韶算法计算2=x 时的值时,3v 的值为( )A. 15B.6C. 2D.63 4.执行如图所示的程序框图,则输出的s 值为A. 21-B.32 C. 2 D. 35.某中学有高中生3500人,初中生1500人,为了解学生的学习情况,用分层抽样的方法从该校学生中抽取一个容量为n 的样本,已知从高中生中抽取70人,则n 为( ) A .100 B .150 C .200 D .2506.若样本1+x 1,1+x 2,1+x 3,…,1+x n 的平均数是10,方差为2,则对于样本2+x 1,2+x 2,…,2+x n ,下列结论正确的是( )A .平均数为10,方差为2B .平均数为11,方差为3C .平均数为11,方差为2D .平均数为12,方差为47.已知定义在R 上的函数f (x )的图象是连续不断的,且有如下对应值表:那么函数f (x )一定存在零点的区间是( )A .(﹣∞,1)B .(1,2)C .(2,3)D .(3,+∞)8.为估测某校初中生的身高情况,现从初二(四)班的全体同学中随机抽取10人进行测量,其身高数据如茎叶图所示,则这组数据的众数和中位数分别为( )A .172,172B .172,169C .172,168.5D .169,1729.某人在打靶中,连续射击2次,事件“至多有一次中靶”的互斥事件是( ) A.至少有一次中靶 B.两次都中靶 C.两次都不中靶 D.只有一次中靶10.要得到函数y =sin (2x −3π)的图象,只需将函数y =sin2x 的图象( )A . 向右平移6π长度单位 B . 向左平移6π长度单位 C . 向右平移3π长度单位D . 向左平移3π长度单位 11.已知向量(2,1)a =,(3,)b m =,若(2)//a b b +,则m 的值是( ) A .32 B .32- C .12 D .12- 12.下列函数中,最小正周期为π,且图像关于直线6x π=对称的是( )A .1sin()212y x π=-B .sin(2)6y x π=+C.1cos()26y x π=+ D .cos(2)6y x π=+二.填空题(共4小题,每小题5分,共20分)13.设2134与1455的最大公约数为m ,则m 化为五进制数为 .14.在边长为2的正三角形ABC 中,以A 为圆心,3为半径画一弧,分别交AB ,AC 于D ,E .若在△ABC 这一平面区域内任丢一粒豆子,则豆子落在扇形ADE 内的概率是 . 15.已知,a b 是两个相互垂直的单位向量,则|2|a b += . 16.若ABC ∆是边长为2的正三角形,则AB 在AC 方向上的投影为__ _ . 三、解答题(本题共6道小题,第17题10分,其余每小题12分,共70分)17. 已知tan α=34-,求: (1)α-αα+αcos 2sin 3cos sin 6的值;(2)22sin cos cos +ααα的值.18.已知函数22()cos cos sin f x x x x x =+-. (Ⅰ)求函数()f x 的最小正周期;(Ⅱ)若(0,)2x π∈,求函数()f x 的最大值以及取得最大值时x 的值.19.从某居民区随机抽取10个家庭,获得第i 个家庭的月收入x i (单位:千元)与月储蓄y i (单位:千元)的数据资料,算得10180ii x==∑,10120i i y ==∑,101184i i i x y ==∑,1021720i i x ==∑. 附:线性回归方程y =bx +a 中,∑∑==--=ni i ni i i xn x xyn y x b 1221,x b y a -=,其中x ,y 为样本平均值,线性回归方程也可写为a x b yˆˆˆ+=. (1)求家庭的月储蓄y 对月收入x 的线性回归方程y =bx +a ;(2)判断变量x 与y 之间是正相关还是负相关;(3)若该居民区某家庭月收入为7千元,预测该家庭的月储蓄.20.某市司法部门为了宣传《宪法》举办法律知识问答活动,随机对该市18~68岁的人群抽取一个容量为n 的样本,并将样本数据分成五组:[18,28),[28,38),[38,48),[48,58),[58,68),再将其按从左到右的顺序分别编号为第1组,第2组,…,第5组,绘制了样本的频率分布直方图;并对回答问题情况进行统计后,结果如下表所示.(1)分别求出a,x的值;(2)从第2,3,4组回答正确的人中用分层抽样方法抽取6人,则第2,3,4组每组应各抽取多少人?(3)在(2)的前提下,决定在所抽取的6人中随机抽取2人颁发幸运奖,求:所抽取的人中第2组至少有1人获得幸运奖的概率.21.设函数f(x)=•,其中向量=(2cosx,1),=(cosx, sin2x).(Ⅰ)求函数f(x)的最小正周期及单调增区间;(Ⅱ)求函数f(x)在区间[﹣,]上的最大值和最小值.22.设函数()()ϕωϕω,,(sin A x A x f +=为常数,且)0,0,0πϕω<<>>A 的部分图象如图所示.(1)求函数)(x f 的表达式; (2)求函数)(x f 的单调减区间;(3)若43)(=αf ,求)62cos(πα-的值.高一数学试卷答案一、选择题(60分)1.A 2.C 3.A 4.B 5.A 6.C 7.C 8.B 9.B 10.A 11.A 12.B 二、选择题(20分)13.(5)34214.三、解答题(70分)17.(I )∵ 4tan 3α=-;所以6sin cos 3sin 2cos αααα+-=6tan 13tan 2αα+-=46()173463()23-+=--.…5分(II )由4tan 3α=-,于是222222sin cos cos 2tan 132sin cos cos sin cos tan 15αααααααααα+++===-++….12分18.(Ⅰ)()2cos 2f x x x =+2sin(2)6x π=+.∴函数()f x 的最小正周期22T ππ==. (Ⅱ)∵(0,)2x π∈,()2sin(2)6f x x π=+,∴72(,)666x πππ+∈∴max ()2f x =. 此时262x ππ+=,∴6x π=.19.(Ⅰ)由题意可知n =10,x =n 1∑=ni i x 1=1080=8,y =n1∑=ni iy 1=1020=2,…2分故212xn x ni i -∑==720-10×82=80,xyn y x ni i i -∑=1=184-10×8×2=24, …4分故可得b ═8024=0.3,a =x b y -=2-0.3×8=-0.4,故所求的回归方程为:y =0.3x -0.4;…6分(Ⅱ)由(Ⅰ)可知b =0.3>0,即变量y 随x 的增加而增加,故x 与y 之间是正相关;…9分(Ⅲ)把x =7代入回归方程可预测该家庭的月储蓄为y =0.3×7-0.4=1.7(千元).…12分 20.【解答】解:(1)第1组人数5÷0.5=10,所以n=10÷0.1=100,… 第2组频率为:0.2,人数为:100×0.2=20,所以a=18÷20=0.9,… 第4组人数100×0.25=25,所以x=25×0.36=9,…(2)第2,3,4组回答正确的人的比为18:27:9=2:3:1,所以第2,3,4组每组应各依次抽取2人,3人,1人.…(3)记“所抽取的人中第2组至少有1人获得幸运奖”为事件A ,抽取的6人中,第2组的设为a 1,a 2,第3组的设为b 1,b 2,b 3,第4组的设为c ,则从6名幸运者中任取2名的所有可能的情况有15种,它们是:(a 1,a 2),(a 1,b 1),(a 1,b 2),(a 1,b 3),(a 1,c ),(a 2,b 1),(a 2,b 2),(a 2,b 3),(a 2,c ),(b 1,b 2),(b 1,b 3),(b 1,c ),(b 2,b 3),(b 2,c ),(b 3,c ).… 其中第2组至少有1人的情况有9种,他们是:(a 1,a 2),(a 1,b 1),(a 1,b 2),(a 1,b 3),(a 1,c ),(a 2,b 1),(a 2,b 2),(a 2,b 3),(a 2,c ). …∴P(A )=. …答:所抽取的人中第2组至少有1人获得幸运奖的概率为.…21【解答】解:(Ⅰ)∵函数f (x )=•=(2cosx ,1)•(cosx , sin2x )=2cos 2x+sin2x=cos2x+sin2x+1=2sin (2x+)+1,∴函数f (x )的最小正周期为=π.令2k π﹣≤2x+≤2k π+,求得k π﹣≤x ≤k π+,可得函数的增区间为[k π﹣,k π+],k ∈Z .(Ⅱ)在区间[﹣,]上,2x+∈[﹣,],sin (2x+)∈[﹣,1],f (x )∈[1﹣,3],即函数f (x )在区间[﹣,]上的最大值为3,最小值为1﹣.22.解:(1)根据图象得3=A ,又)6(12743ππ--=T π=⇒T ,所以2=ω. (2)分又)(x f 过点)0,6(π-,由0)6(2=+-⋅ϕπ得:3πϕ=.所以)32sin(3)(π+=x x f . ……………………………… 4分(2)由πππππ2323222+≤+≤+k x k 得: Z k k x k ∈+≤≤+,12712ππππ.即函数()f x 的单调减区间为Z k k k ∈⎥⎦⎤⎢⎣⎡++,127,12ππππ ……………… 8分 (3)由43)(=αf ,得43)32sin(3=+πα,所以41)32sin(=+πα. ………10分 41)32sin())62(2sin()62cos(=+=-+=-παπαππα. ……………… 12分。
甘肃省武威第五中学、武威三中、武威期中、武威十六中2017-2018学年高二下学期期末联考数学(理)试题
2017–2018学年第二学期武威五中高二年级数学(理)试卷一、选择题(共 12 小题,每小题 5 分,共 60 分)1.函数在点处的切线方程为()A. B.C. D.2.复数,互为共轭复数,若,则A. B. C. D.3.如果随机变量,且,,则等于()A. B. C. D.4.随机变量服从正态分布,若落在区间和上取值的概率分别为、,则()A. B. C. D.不确定5.已知函数的导函数为,且满足关系式,则的值等于()A. B.C. D.6.极坐标方程化为直角坐标方程是()A. B.C. D.7.甲,乙,丙,丁,戊人站成一排,要求甲,乙均不与丙相邻,不同的排法种数有()A.种B.种C.种D.种8.下列积分值等于的是()A. B.C. D.9.曲线(为参数)的对称中心()A.在直线上B.在直线上C.在直线上D.在直线上10.随机变量,那么的值为()A. B. C. D.11.设是定义在正整数集上的函数,且满足:“当成立时,总可推出成立”.那么,下列命题总成立的是()A.若成立,则成立B.若成立,则成立C.若成立,则当时,均有成立D.若成立,则当时,均有成立12.设函数在上可导,其导函数为,且函数的图象如图所示,则下列结论中一定成立的是()A.函数有极大值和极小值B.函数有极大值和极小值C.函数有极大值和极小值D.函数有极大值和极小值二、填空题(共 4 小题,每小题 5 分,共 20 分)13.已知函数存在极大值和极小值,则实数的取值范围是___ _____.14.在的二项展开式中,常数项等于_______.15.下列图形中,若黑色三角形的个数依次构成一个数列的前项,则这个数列的一个通项公式为_______16.下列说法中正确的是________(把所有正确说法的序号都填上).①“若,则”的逆命题为真;②线性回归方程对应的直线一定经过其样本数据点,,…,中的一个点;③命题“,”的否定是“,”;④命题“函数在处有极值,则”的否命题是真命题.三、解答题(共 6 小题,共 70 分)17.(10分) 在平面直角坐标系中,以原点为极点,轴正半轴为极轴建立极坐标系,并在两坐标系中取相同的长度单位.已知曲线的极坐标方程为,直线的参数方程为(为参数,为直线的倾斜角).写出直线的普通方程和曲线的直角坐标方程;若直线与曲线有唯一的公共点,求角的大小.18. (12分) 设,求:;;;19.(12分) 已知点在函数的图象上求参数的值;讨论函数的单调性.20.(12分) 赛季美国职业篮球联赛总决赛,迈阿密热火对阵圣安东尼奥马刺,比赛采用场胜制.如果我们认为双方实力相当,二者获胜概率相等的话.已知前场比赛中,两队打成,求热火队以获得这次总决赛胜利的概率;记需要比赛的场数为,求随机变量的概率分布列及其数学期望.21. (12分)某零售店近五个月的销售额和利润额资料如下表:画出散点图.观察散点图,说明两个变量有怎样的相关关系;用最小二乘法计算利润额关于销售额的回归直线方程;当销售额为(千万元)时,利用的结论估计该零售店的利润额(百万元).22. (12分)某地十余万考生的成绩中,随机地抽取了一批考生的成绩,将其分为组:第一组,第二组,…,第六组,作出频率分布直方图,如图所示用每组区间的中点值代表该组的数据,估算这批考生的平均成绩;附:高二数学(理)答案1---12. CABCD ABDBB DA13. a>2或a<-1 14. 240 15. 16. ③17.解:当时,直线的普通方程为;当时,直线的普通方程为.由,得,所以,即为曲线的直角坐标方程把,代入,整理得.由,得,所以或,故直线倾斜角为或18. 解:设,则,.∵,∴..∵,∴.19.解:将代入函数的解析式得:,解得:;由,的定义域为,,所以当时,,当时,,故函数在上单调递减,在上单调递增.20.解:前场比赛中,两队打成,热火队以获得这次总决赛胜利,∴热火队需在后面的场比赛中胜两局,最后一场热火队胜.其概率为.表示从第局开始到比赛结束所进行的局数,的可能取值是、、、.,,,,得到的分布列:∴.21. 解:散点图如下.两个变量呈正线性相关关系.(2).由题中的数据可知,.所以.所以利润额关于销售额的回归直线方程为.由知,当时,,…所以当销售额为(千万元)时,可以估计该店的利润额为(百万元).…22.解:根据题意,计算平均数为;,,,四组学生的频率之比为,按分层抽样应该从这四组中分别抽取,,,人,依题意,可得到以下列联表:,对照临界值表知,不能有的把握认为数学成绩优异与性别有关。
甘肃省武威五中2017-2018学年高一下学期期中物理试卷 Word版含解析
2017-2018学年甘肃省武威五中高一(下)期中物理试卷一、选择题(每小题4分,共40分.每小题只有一个选项符合题目要求)1.下列说法符合史实的()A.牛顿发现了行星的运动规律B.开普勒发现了万有引力定律C.卡文迪许第一次在实验室里测出了万有引力常量D.牛顿发现了海王星和冥王星2.某行星绕太阳运行的椭圆轨道如图所示,则行星在A点和B点的速度大小关系是()A.V A>V B B.V A=V B C.V A<V B D.无法确定3.甲、乙两个质点间的万有引力大小为F,若甲质点的质量不变,乙质点的质量增大为原来的2倍,同时它们间的距离减为原来的,则甲、乙两个质点间的万有引力大小将变为()A.B.F C.4F D.8F4.关于环绕地球运转的人造地球卫星,有如下几种说法,其中正确的是()A.轨道半径越大,速度越小,周期越长B.轨道半径越大,速度越大,周期越短C.轨道半径越大,速度越大,周期越长D.轨道半径越小,速度越小,周期越长5.人造卫星绕地球做匀速圆周运动,其速率可能是()A.7.9km/s B.11.2km/sC.16.7km/s D.介于7.9~11.2 km/s6.两颗人造卫星A、B绕地球做圆周运动的周期之比T A:T B=1:8,则轨道半径之比为()A.1:2 B.2:1 C.4:1 D.1:47.对于开普勒第三定律的表达式=k的理解正确的是()A.k与a3成正比 B.k与T2成反比C.k值是与a和T无关的值D.k值只与中心天体有关8.若某星球的质量和半径均为地球的一半,那么质量为50kg的宇航员在该星球上的重力是地球上重力的()A.B.C.2倍D.4倍9.宇宙飞船进入一个围绕太阳运动的近乎圆形的轨道上运动,如果轨道半径是地球轨道半径的9倍,那么宇宙飞船绕太阳运行的周期是()A.3年B.9年C.27年D.81年10.两颗人造地球卫星质量之比是1:2,轨道半径之比是3:1,则下述说法中,正确的是()A.它们的周期之比是:1B.它们的线速度之比是1:C.它们的向心加速度之比是1:9D.它们的向心力之比是1:9二、填空题(每空4分,共16分)11.一颗人造卫星绕地球作匀速圆周运动,轨道半径为r,已知地球的半径为R,地面上重力加速度为g,则这颗人造卫星的运行周期T=.12.两个质量相等的球体,球心相距r时,它们之间的引力为10﹣8N,若它们的质量都加倍,球心间的距离也加倍,则它们之间的引力为N.13.已知地球的半径为R,地面的重力加速度为g,万有引力恒量为G,如果不考虑地球自转的影响,那么地球的平均密度的表达式为.14.火星的质量是地球质量的,火星半径是地球半径的,地球的第一宇宙速度是7.9km/s,则火星的第一宇宙速度为km/s.三、计算题(共计44分)15.一个质子由两个u夸克和一个d夸克组成.一个夸克的质量是7.1×10﹣30kg,求两个夸克相距1.0×10﹣16m时的万有引力.16.太阳的半径R和地球半径r之比是110:1,太阳的平均密度和地球的平均密度之比是1:4,地球表面的重力加速度g=9.8m/s2,试求太阳表面的重力加速度.17.一个重量为10N的物体,在15N的水平拉力的作用下,在粗糙的水平面上移动0.5m的距离,粗糙面与物体之间的动摩擦因数为0.2.求拉力和摩擦力对物体做的功分别是多少.18.若嫦娥三号卫星在离月球表面为h的空中沿圆形轨道绕月球飞行,周期为T.若月球半径r,引力常量为G.试推导:(1)月球的质量的表达式;(2)月球表面的重力加速度的表达式.2017-2018学年甘肃省武威五中高一(下)期中物理试卷参考答案与试题解析一、选择题(每小题4分,共40分.每小题只有一个选项符合题目要求)1.下列说法符合史实的()A.牛顿发现了行星的运动规律B.开普勒发现了万有引力定律C.卡文迪许第一次在实验室里测出了万有引力常量D.牛顿发现了海王星和冥王星【考点】物理学史;万有引力定律的发现和万有引力恒量的测定.【分析】开普勒发现了行星的运动规律;牛顿发现了万有引力定律;卡文迪许第一次在实验室里测出了万有引力常量;亚当斯发现的海王星.【解答】解:A、开普勒发现了行星的运动规律.故A错误;B、牛顿发现了万有引力定律.故B错误;C、卡文迪许第一次在实验室里测出了万有引力常量.故C正确;D、亚当斯发现的海王星.故D错误.故选:C2.某行星绕太阳运行的椭圆轨道如图所示,则行星在A点和B点的速度大小关系是()A.V A>V B B.V A=V B C.V A<V B D.无法确定【考点】万有引力定律及其应用.【分析】根据动能定理,通过万有引力做功判断A、B两点的速度大小关系.【解答】解:行星从A到B的过程中,万有引力做负功,动能减小,则A点的速度大于B 点的速度,故A正确,B、C、D错误.故选:A.3.甲、乙两个质点间的万有引力大小为F,若甲质点的质量不变,乙质点的质量增大为原来的2倍,同时它们间的距离减为原来的,则甲、乙两个质点间的万有引力大小将变为()A.B.F C.4F D.8F【考点】万有引力定律及其应用.【分析】根据万有引力定律公式F=进行判断.【解答】解:根据万有引力定律公式F=得,F′==8F,故D正确,A、B、C错误.故选:D.4.关于环绕地球运转的人造地球卫星,有如下几种说法,其中正确的是()A.轨道半径越大,速度越小,周期越长B.轨道半径越大,速度越大,周期越短C.轨道半径越大,速度越大,周期越长D.轨道半径越小,速度越小,周期越长【考点】人造卫星的加速度、周期和轨道的关系.【分析】要求卫星的线速度与轨道半径之间的关系,可根据G=m来求解;要求卫星的运动周期和轨道半径之间的关系,可根据有G=m R来进行求解.【解答】解:人造地球卫星在绕地球做圆周运动时地球对卫星的引力提供圆周运动的向心力故有G=m R故T=,显然R越大,卫星运动的周期越长.又G=mv=,显然轨道半径R越大,线速度越小.故A正确.故选A.5.人造卫星绕地球做匀速圆周运动,其速率可能是()A.7.9km/s B.11.2km/sC.16.7km/s D.介于7.9~11.2 km/s【考点】万有引力定律及其应用.【分析】根据万有引力提供向心力得出做圆周运动的最大的速度,从而分析判断.【解答】解:根据知,v=,轨道半径越小,线速度越大,可知第一宇宙速度是做圆周运动最大的环绕速度,即人造卫星绕地球做圆周运动的速率v≤7.9km/s,故A正确,B、C、D错误.故选:A.6.两颗人造卫星A、B绕地球做圆周运动的周期之比T A:T B=1:8,则轨道半径之比为()A.1:2 B.2:1 C.4:1 D.1:4【考点】人造卫星的加速度、周期和轨道的关系.【分析】人造卫星绕地球做圆周运动,根据万有引力提供向心力,列式解出周期与轨道半径的关系,即可求解.【解答】解:根据万有引力提供向心力,得:G=m r=m可得:T=2,式中M是地球的质量,r是卫星的轨道半径.由题意,卫星A、B绕地球做圆周运动的周期之比为1:8,由T=2,得轨道半径之比为1:4.选项D正确,ABC错误故选:D7.对于开普勒第三定律的表达式=k的理解正确的是()A.k与a3成正比 B.k与T2成反比C.k值是与a和T无关的值D.k值只与中心天体有关【考点】开普勒定律.【分析】开普勒第三定律的表达式=k中k是常数,由中心天体决定.【解答】解:开普勒定律是根据太阳和它的行星运动规律得出来的,k值是个常数,只与中心天体太阳有关,与其他因素无关,故ABC错误,D正确.故选:D8.若某星球的质量和半径均为地球的一半,那么质量为50kg的宇航员在该星球上的重力是地球上重力的()A.B.C.2倍D.4倍【考点】万有引力定律及其应用.【分析】根据万有引力等于重力求出重力加速度的表达式,结合质量和半径关系求出重力加速度之比,从而确定星球上重力是地球上重力的倍数.【解答】解:根据得,重力加速度g=.因为星球质量和半径均为地球的一半,则星球表面的重力加速度是地球表面重力加速度的2倍,所以质量为50kg的宇航员在该星球上的重力是地球上重力的2倍.故C正确,A、B、D错误.故选:C.9.宇宙飞船进入一个围绕太阳运动的近乎圆形的轨道上运动,如果轨道半径是地球轨道半径的9倍,那么宇宙飞船绕太阳运行的周期是()A.3年B.9年C.27年D.81年【考点】人造卫星的加速度、周期和轨道的关系;万有引力定律及其应用.【分析】开普勒第三定律中的公式,可知半长轴的三次方与公转周期的二次方成正比.【解答】解:开普勒第三定律中的公式解得:T=一颗小行星围绕太阳在近似圆形的轨道上运动,若轨道半径是地球轨道半径的9倍,小行星绕太阳运行的周期是地球周期的27倍,即小行星绕太阳运行的周期是27年.故选C.10.两颗人造地球卫星质量之比是1:2,轨道半径之比是3:1,则下述说法中,正确的是()A.它们的周期之比是:1B.它们的线速度之比是1:C.它们的向心加速度之比是1:9D.它们的向心力之比是1:9【考点】人造卫星的加速度、周期和轨道的关系.【分析】人造地球卫星绕地球做圆周运动,万有引力提供圆周运动的向心力由此判定周期等描述圆周运动的物理量与半径的关系即可.【解答】解:人造地球卫星绕地球做圆周运动的向心力由万有引力提供有:A、知,,故A错误;B、知:,故B正确;C、知,,故C正确;D、知,,故D错误.故选:BC二、填空题(每空4分,共16分)11.一颗人造卫星绕地球作匀速圆周运动,轨道半径为r,已知地球的半径为R,地面上重力加速度为g,则这颗人造卫星的运行周期T=.【考点】人造卫星的加速度、周期和轨道的关系;万有引力定律及其应用.【分析】通过万有引力提供向心力,结合万有引力等于重力求出人造卫星运行的周期.【解答】解:根据万有引力提供向心力得,解得T=.再根据万有引力等于重力得,知GM=gR2所以T=.故答案为:.12.两个质量相等的球体,球心相距r时,它们之间的引力为10﹣8N,若它们的质量都加倍,球心间的距离也加倍,则它们之间的引力为10﹣8N.【考点】万有引力定律及其应用.【分析】本题改变了两个物体的质量和距离,只需要代入万有引力定律求解.【解答】解:设两个物体的质量分别为m1,m2;未变时:①变化后:②由①②联立得:F=10﹣8N故答案为:10﹣8.13.已知地球的半径为R,地面的重力加速度为g,万有引力恒量为G,如果不考虑地球自转的影响,那么地球的平均密度的表达式为.【考点】万有引力定律及其应用.【分析】由地球表面万有引力等于重力,可得地球质量,再由体积表达式可得地球密度.【解答】解:由地球表面万有引力等于重力,可得:解得:地球体积为:故地球密度为:故答案为:14.火星的质量是地球质量的,火星半径是地球半径的,地球的第一宇宙速度是7.9km/s,则火星的第一宇宙速度为 3.53km/s.【考点】第一宇宙速度、第二宇宙速度和第三宇宙速度.【分析】第一宇宙速度是环绕星球表面做匀速圆周运动的速度,此时星球对卫星的引力提供卫星圆周运动的向心力,满足,得第一宇宙速度的表达式为v=,其中R为星球半径,M为星球的质量,根据表达式可以将地球和火星的第一宇宙速度之比转化为质量比和半径之比.【解答】解:第一宇宙速度为围绕星球做圆周运动的最大速度,根据万有引力提供向心力可有:,则此时第一宇宙速度的表达式为:v=,据此可知火星上的第一宇宙速度为:==故答案为:3.53三、计算题(共计44分)15.一个质子由两个u夸克和一个d夸克组成.一个夸克的质量是7.1×10﹣30kg,求两个夸克相距1.0×10﹣16m时的万有引力.【考点】万有引力定律及其应用.【分析】由万有引力公式代入数据可直接求出二者之间的万有引力.【解答】解:由万有引力公式可得:F==N=3.27×10﹣37N答:两个夸克间的万有引力为3.27×10﹣37N.16.太阳的半径R和地球半径r之比是110:1,太阳的平均密度和地球的平均密度之比是1:4,地球表面的重力加速度g=9.8m/s2,试求太阳表面的重力加速度.【考点】万有引力定律及其应用;向心力.【分析】在星球表面的物体受到的重力等于万有引力,则有=mg,得到g=,又因为天体可看成球体,故质量为M=,代入上式,再根据太阳和地球的半径之比和密度之比计算太阳的表面重力加速度.【解答】解:在星球表面的物体受到的重力等于万有引力=mg,所以g=其中M为该星球的质量,R为该星球的半径.又因为M=ρ•V=所以g=则有=×=27.5×9.8=269.5 m/s2所以g太答:太阳表面的重力加速度是269.5 m/s217.一个重量为10N的物体,在15N的水平拉力的作用下,在粗糙的水平面上移动0.5m的距离,粗糙面与物体之间的动摩擦因数为0.2.求拉力和摩擦力对物体做的功分别是多少.【考点】功的计算.【分析】根据摩擦力公式可求得滑动摩擦力,根据W=FLcosθ即可求解拉力和摩擦力的功.【解答】解:拉力的功W F=FL=15×0.5=7.5J摩擦力f=μmg=0.2×100=20N;摩擦力W f=﹣fL=﹣20×0.5=﹣1 J;答:拉力和摩擦力对物体做的功分别是7.5J和﹣1J.18.若嫦娥三号卫星在离月球表面为h的空中沿圆形轨道绕月球飞行,周期为T.若月球半径r,引力常量为G.试推导:(1)月球的质量的表达式;(2)月球表面的重力加速度的表达式.【考点】万有引力定律及其应用.【分析】(1)根据万有引力提供向心力,结合轨道半径和周期求出月球的质量.(2)根据万有引力等于重力求出月球表面的重力加速度.【解答】解:(1)嫦娥三号围绕月球做圆周运动时,有:…①解得:…②(2)根据万有引力等于重力得:…③解得:…④答:(1)月球的质量表达式为得;(2)月球表面的重力加速度为;2018年10月29日。
甘肃省武威第五中学、武威三中、武威七中、武威十六中2017-2018学年高一下学期期末联考语文试题含答案
2017-2018学年下学期高一年级期末试卷语文第Ⅰ卷阅读题一、现代文阅读(28分)(一)论述类文本阅读(本题共3小题,9分)阅读下面的文字,完成1-3题。
说意境叶朗很多人说:什么是意境?意境就是“情”“景”交融。
其实这种解释应该是从近代开始的。
王国维在《人间词话》中所使用的“意境”或“境界”,他的解释就是情景交融。
但是在中国传统美学中,情景交融所规定的是“意象”,而不是“意境”。
中国传统美学认为艺术的本体就是意象,任何艺术作品都要创造意象,都应该情景交融,而意境则不是任何艺术作品都具有的。
意境除了有意象的一般规定性之外,还有自己的特殊规定性,意境的内涵大于意象,意境的外延小于意象。
那么意境的特殊规定性是什么呢?唐代刘禹锡有句话:“境生于象外。
”“境”是对于在时间和空间上有限的“象”的突破,只有这种象外之“境”才能体现作为宇宙的本体和生命的“道”。
从审美活动的角度看,所谓“意境”,就是超越具体的有限的物象、事件、场景,进入无限的时间和空间,从而对整个人生、历史、宇宙获得一种哲理性的感受和领悟。
西方古代艺术家,他们给自己提出的任务是要再现一个具体的物象,所以他们,比如古希腊雕塑家追求“美”,就把人体刻画得非常逼真、非常完美。
而中国艺术家不是局限于刻画单个的人体或物体,把这个有限的对象刻画得很逼真、很完美。
相反,他们追求一种“象外之象”、“景外之景”。
中国园林艺术在审美上的最大特点也是有意境。
中国古典园林中的楼、台、亭、阁,它们的审美价值主要不在于这些建筑本身,而是如同王羲之《兰亭集序》所说,在于可使人“仰观宇宙之大,俯察品类之盛。
”我们生活的世界是一个有意味的世界。
陶渊明有两句诗说得好:“此中有真意,欲辩已忘言。
”艺术就是要去寻找、发现、体验生活中的这种意味。
有意境的作品和一般的艺术作品在这一点的区别,就在于它不仅揭示了生活中某一个具体事物或具体事件的意味,而且超越了具体的事物和事件,从一个角度揭示了整个人生的意味。
(解析版)甘肃省武威第五中学、武威三中、武威期中、武
2017-2018学年度第二学期第二学期期末考试高一地理试卷一、单项选择题(每题只有一个正确答案,共20题,每小题3分,共60分。
)下图是我国东南沿海经济发达地区某新兴城市人口增长示意图。
读下图,回答下列各题。
1. 1992年至1993年,该城市的人口增长率是:A. 16.7%B. 14.3%C. 0.9%D. 1.2%2. 1991年至1998年,该城市人口迅速增长的主要原因是:A. 人口出生率高B. 人口死亡率低C. 大量人口迁入D. 原有人口基数小3. 该城市人口迅速增长,近期可能导致的主要问题是:A. 人口老龄化突出B. 城市经济缺乏活力C. 社会劳动力不足D. 城市用地压力增大【答案】1. A 2. C 3. D【解析】【1题详解】通过图中数据1992年人口68.7万,1993年人口80.2万,计算1992—1993年人口增长率(80.2-68.7)÷68.7×100%,即为16.7%。
故A项正确。
【2题详解】根据图示该地区位于“我国东南沿海经济发达地区”,故该地区的人口自然增长率应较低,而从1991年到1998年,人口数量却迅速上升,可能是由于经济发展水平较高,而吸引大量人口迁移而影响的。
故答案选C项。
【3题详解】人口的快速增长,为迁入地提供了大量廉价劳动力,利于促进资源开发、城市建设和经济发展,但可能给城市环境造成一定的压力,如城市的用地压力增大。
故答案选D项。
点睛:本题考查人口增长和产生的人口问题。
难度一般,学生主要掌握一地的人口数量受人口自然增长和人口机械增长的共同影响,并能结合经济因素对人口迁移的影响和人口迁移对迁入地的地理环境的影响等内容分析,注意人口迁移对迁入地和迁出地的不同的影响。
4.城市内部空间结构的形成是由多种因素共同作用的结果。
影响城市内部空间结构的主要因素是:A. 自然因素B. 经济因素C. 社会因素D. 技术因素【答案】B【解析】【分析】城市的每一块土地作为哪种功能用地,主要取决于各种经济活动的付租能力,即付出地租的高低。
甘肃省武威第五中学、武威三中、武威期中、武威十六中2017-2018学年高二下学期期末联考英语试题
2017-2018学年第二学期武威五中高二年级英语试卷考试总分:150分考试时间: 120 分钟注意事项:1.答题前填写好自己的姓名、班级、考号等信息;2.请将答案正确填写在答题卡上;一、阅读理解(共 20 小题,每小题 2分,共40分)AAre you interested in higher education in the United States?The following advice might help you.●College,University or InstituteCollege and universities offer undergraduate degrees in arts and sciences.And bo th can help prepare young people to earn a living.But many colleges don’t of fer graduate studies.Universities are generally bigger,offer more programs and do more research.An institute of technology can offer a wide choice of programs and activities.Seventyfive percent of freshmen go there with a strong interest and involvement in the arts.●The Application ProcessInternational admissions officers advise students to apply to at least three sch ools.You may be able to apply online and pay the application charge with a c redit card,or by mail.You should study the websites of schools to find informa tion about how and when to apply,how much it will cost and whether any financ ial aid is available.●Get a Student CardIf you requesting a visa for the first time,you will have to go to an American embassy or consulate(领馆).You will need to bring a government form sent to you by your American sc hool that shows you have been accepted.A consular official will also take your picture and your fingerprints.You will also need banking and tax records that show you have enough money to pay for your education.●Financial AidAmerican schools provide aid,like scholarships,fellowships,to almost half of foreign graduate students,but only ten percent of undergraduates.But grants,which,unlike a loan,does not have to be paid.1.It can be inferred from the passage that American colleges and universities__ ______.A.have their own origins in institutes of technologyB.have both similarities and differencesC.can offer a wide choice of programs and activitiesD.provide about seventy-five percent students with art courses2.In what order should the steps for applying to an American school be comple ted by a foreign student?________a.Apply onlineb.Find out how much it will cost and whether any financial aid is available onlinec.Pay the application charge with a credit card,or by maild.Choose at least three schoolse.Find information about how and when to apply onlineA.a-c-e-d-b B.e-d-c-a-b C.d-a-c-e-b D.b-c-e-d-a3.To apply for a vise for the first time,you’ll have to do the following things EXCEPT________.A.paying an American embassy or consulate some moneyB.taking your picture and your fingerprintsC.showing a government form given by the American school admitting you D.providing evidence that you have enough money to pay for your education 4.The purpose of the passage is________.A.to make some moneyB.to provide foreign students with a guideC.to improve education qualityD.to attract foreign visitors to America.BTim Richter and his wife,Linda,had taught for over 30 years near Buffalo,New York-he in computers,she in special education.“Teaching means everything to us,”Tim would say.In April 1998,he learned he would need a heart operation .It was the kind of news that leads to some serious thinking about life’s p urpose.Not long after the surgery,Tim saw a brochure describing Imagination Library,a program started by Dolly Par ton’s foundation(基金会)that mailed a book every month to children from birth to age five in the sin ger’s home town of Sevier,Tennessee.“I thought,maybe Linda and I could do something like this when we retire,”Tim recalls.H e placed the brochure on his desk,“as a reminder.”Five years later,now retired and with that brochure still on the desk,Tim clicked on imaginationlibrary.com.The program had been opened up to partner s who could take advantage of book and postage discounts.The quality of the books was of great concern to the Richters.Rather than sig n up online,they went to Dollywood for a look-see.“We didn’t want to give the children rubbish,”says Linda.The books-reviewed each year by teachers,literacy specialists,and Dollywood board members-included classics such as Ezra Jack Keats’s The Sno wy Day and newer books like Anna Dewdney’s Llama Llama series.Satisfied,the couple set up the Richter Family Foundation and got to work.Since 2004,they have shipped more than 12,200 books to preschoolers in their area.Megan Williams, a mother of four,is more than appreciative:“This program introduces us to books I’ve never heard of.”The Richters spend about﹩400 a month sending books to 200 children.“Some people sit there and wait to die,”says Tim.“Others get as busy as they can in the time they have left .”5.What led Tim to think seriously about the meaning of life?________A.His health problem.B.His love for teaching.C.The influence of his wife.D.The news from the Web.6.What did Tim want to do after learning about Imagination Library?________ A.Give out brochures.B.Do something similar.C.Write books for children.D.Retire from being a teacher.7.Why did the Richters go to Dollywood?________A.To avoid signing up online.B.To meet Dollywood board members.C.To make sure the books were the newest.D.To see if the books were of good quality.8.What can we learn from Tim’s words in the last paragraph?________A.He needs more money to help the children.B.He wonders why some people are so busy.C.He tries to save those waiting to die.D.He considers his efforts worthwhile.CCan dogs and cats live in perfect harmony in the same home?People who are thinking about adopting a dog as a friend for their cats are worried that they will fight.A recent research has found a new recipe of succ ess.According to the study,if the cat is adopted before the dog,and if they are introduced when still young (less than 6 months for cats,a year for dogs),it is highly probable that the two pets will get along .Two-thirds of the ho mes interviewed reported a positive relationship between their cat and dog.However,it wasn’t all sweetness and��light.There was a reported coldness between the cat and dog in 25% of the homes,while aggression and fighting were observed in 10% of the homes.One reason for this is probably that some of their body signals were just opposite.For exam ple,when a cat turns its head away it signals aggression,while a dog doing the same signals submission.In homes with cats and dogs living peacefully,researchers observed a surprising behaviour.They are learning how to talk each other’s language.It is a surprise that cats can learn how to talk’dog’,and dogs can learn how to talk’Cat’.What’s interesting is that both cats and dogs have appeared to develop their intelligence.They can learn to read each other’s body signals,suggesting that the two may have more in common than we previously suspected.O nce familiar with each other’s presence and body language,cats and dogs can play together,greet each other nose to nose,and enjoy sleeping together in the sofa.They can easily share the same water bowl and in some cases groom(梳理)each other.The significance of this research on cats and dogs may go beyond pets–to people who don’t get along,including neighbors,colleagues at work,and even world superpowers.If cats and dogs can learn to get along,surely people have a good chance.9.The underlined word swimmingly in paragraph 1 is closest in meaning to_______ _.A.earlyB.sweetlyC.quicklyD.smoothly10.Some cats and dogs may fight when________.A.they are cold to each otherB.they look away from each otherC.they misunderstand each other’s signalsD.they are introduced at an early age11.What is found surprising about cats and dogs?________A.They eat and sleep togetherB.They observe each others behaviorsC.They learn to speak each other’s languageD.They know something from each other’s voice12.What can we human beings learn from cats and dogs?________A.We should learn to live in harmonyB.We should knows more about animalsC.We should live in peace with animalsD.We should learn more body languages.DCherish the Moments with Our ParentsThere was something in an elderly woman’s behavior that caught my eye.Unsureof her steps,the woman moved slowly,along with a younger woman who I guessed was her daughter.The daughter was ro lling her eyes and checking her watch every few seconds.The older woman left the younger one and began to tick through the DVDs on t he nearest shelf.Without hesitation,I walked over and asked if I could help her find something.The woman smiled at me and showed me a title on a piece of paper.Rather than rush off to locate the DVD for the woman,I asked her to walk with me so I could show her where she could find it.Lo oking back,I think I wanted to enjoy her company for a moment.Her movements reminded meof my own mother,who had passed away the previous Christmas.As we walked,the woman seemed glad of the unrushed company and casual conversation.We found the movie and she told me it was the one she’d enjoyed when she was her son’s age and that she hoped he would enjoy it as much as she had.Maybe,she said he could enjoy it with his own young children.I accompanied her to the queue at the cashier.As the cashier put the DVD int o a plastic bag,I went over to the younger woman,who was still tapping her foot at the front of the store.“Is that your mom?”I asked.I had expected her to tell me it was none of my business.But she rolled hereyes and said,“Yeah.”There was annoyance in her reply.Still watching the mother,I said,“Mind some advice?”“Go ahead,”said the daughter.I smiled to show her I wasn’t criticizing“Cherish her,”I said,“When she’s gone,it’s the little moments that’ll come back to you.Moments like this.I know.”It was true.I missed my mom still and remembered with sadness the moments whe n I’d used my impatience to make her life miserable.The elderly woman moved slowly back to her daughter.Together they made their w ay toward the store’s exit.They stood there for a moment,side by side,watching the rush of the holiday current.Then the daughter glanced over and slowly placed her arm with apparently unaccustomed affection around her mother’s shoulders and gently guided her home.13.The daughter checked her watch frequently because she________.A.had to wait for a friendB.wanted to buy a new watchC.was impatient to shop with her momD.was uninterested in watching the DVD14.From Paragraphs 3and 4we know that________.A.the elderly woman hadn’t seen the movie beforeB.the elderly woman found her son’s favorite movieC.the author and the eldly woman hurried to find the DVDD.the author and the elderly woman enjoyed each other’s company15.We can learn from the passage that________.A.the author had treated her mom very wellB.the elderly woman looked like the author’s momC.the author scolded the daughter for her behaviorD.the daughter changed her attitude toward her mom.任务型阅读根据短文内容,从短文后选项中选出能填入空白处的最佳选项.选项中有两项为多余选项,并在答题卡上将该项涂黑.Common-sense Safety Tips for Travelling AbroadWhen a holiday is just around the corner,you may be planning a trip abroad.But to enjoy a worry-free adventure abroad,you also should pay attention to the following common-sense safety tips for tra velling abroad.(16)________Another reason to take only carry-on carriage—besides avoiding baggage fees—is that the less you have to carry around,the more quickly you can move,if necessary.You should always have a free hand.Besides,you won’t be exhausted from dragging all those bags around.(17)________Lock it up.Leave your hotel with only what you need and lock up the rest.Take a lock for your luggage just in case your hotel doesn’t offer a safe.(18)________ If you don’t need all your cash and cards,don’t take them all with you when you go out for a day of sightseeing or s hopping.Also,leave your passport in the hotel.Make photocopies of all your important documen ts and leave the hotel with a copy of your passport plus a one photo I.D.W hy?(19)________ If all of your identification is in it,imagine the trouble you have to go through to replace it all.Think and Plan.Always keep in mind that,when you travel abroad,you are in a place you don’t know well and you can always be a target.Trus t your senses.(20)________ After your arrival,ask the hotel staff and locals about the areas you are thinking of visiting,especially at night.And you should walk in well-lit areas at night and know h ow to contact the local police with your cell phone or a payphone in a forei gn country,if necessary.A.Travel light.B.Pay by credit card.C.Imagine having your bag stolen off a restaurant table.D.You should also make it a habit to take your watch with you.E.Plus,dragging lots of luggage is a dead giveaway that you aren’t a local resident.F.You should call ahead to be sure,especially if your luggage is made of cloth material.G.You are smart and mature,so if something or some situation doesn’t feel safe,it probably isn’t.二、完形填空(共 20小题,共40 分)One day.a poor boy who was trying to pay his way through school by selling goods from door to door found that he only had one dime left.He was hungry so he decided to (21)________ for a meal at the next house.However,he lost his nerve (22)________ a lovely young woman opened the door.Instead of a meal he asked fora drink of water.She thought he looked (23)________ so she brought him a large glass of milk.He drank it (24)________,and then asked,“How much do I owe you?”“You don’t owe me anything,”she(25)________.“Mother has taught me never to accept pay for a(26)________.”He said,“Then I thank you from the bottom of my heart.”As Howard Kelly left that h ouse,he not only felt stronger(27)________,but it also increased his faith in God and human race.He was about to give up and quit before this point.Years later the young woman became critically ill.The local doctors were baffled.They finally sent her to the big city,where specialists can be called (28)________ to study her rare disease.Dr.Howard Kelly,now (29)________,was called in for the consultation.When he heard the name of the town she ca me from,a strange light (30)________ his eyes.Immediately,he (31)________ and went down through the hospital hall into her room.(32)________in his doctor’s gown he went in to see her.He (33)________her at once.He went back to the consultation room and (34)________ to do his best to save her life.From that day on,he gave(35)________ attention to her case.After a long(36)________,the battle was won.Dr.Kelly (37)________the business office to pass the final bill to him for approval.He look ed at it and then wrote something on the side.The bill was sent to her room .She was afraid to open it because she was(38)________ that it would take the rest of her life to pay it off.Finally she looked,and the note on the side of the bill caught her(39)________.She read these words…“Paid in full with a glass of milk.”(Signed)Dr.Howard KellyTears of joy flooded her eyes as she(40)________ silently.“Thank you,God.Your love has spread through human hearts and hands.”21.A.call B.make C.beg D.prepare 22.A.while B.when C.though D.unless 23.A.thirsty B.lazy C.tired D.hungry 24.A.slowly B.unexpectedly C.steadily D.hurriedly25.A.announced B.shook C.replied D.doubted 26.A.reward B.kindness C.hand D.value27. A.physically B.mentally C.normally D.properly 28.A.up B.for C.on D.in 29.A.rich B.famous C.observant D.vivid 30.A.filled B.consulted C.fixed D.concentrated 31.A.rose B.raised C.got D.left 32.A.Worn B.Having C.putting D.Dressed 33.A.recognized B.knew C.spared D.regained 34.A.desired B.declared C.determined D.declined 35.A.special B.ordinary C.normal D.no 36.A.decision B.preparation C.struggle D.debate 37.A.ordered B.requested C.confused D.compressed 38.A.negative B.uncertain C.positive D.obvious 39.A.presentation B.preference C.attention D.arrangement 40.A.prayed B.pretended C.pressed D.praised三、语法填空题(共 10小题,共20 分)阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式,答案写在答题卡上.A mouse,because of an(41)________ (luck)chance,made close friends with an evil frog.One day,(42)________frog played a trick on the mouse by(43)________ (tie) a foot of the mouse to his own.At first,both of them joined together and the frog(44)________ (lead)his friend toward the pool in which he lived,and didn’t stop (45)________ he reached the side of the water.Then the frog suddenly jumped into the water and the mouse was pulled in with(46)________ (he).The frog enjoyed the water and swam in it around,happily crying (47)________if he had done a great deed.The unhappy mouse died soon in the water,and his dead body floated around on the surface,(48)________(fasten)to the foot of the frog. A hawk saw the dead mouse,suddenly flew down towards it,caught it and flew away.The frog,still tied to the leg of the mouse,was also carried off as a(49)________(prison),and it(50)________(eat)by the hawk.Harm hatch,harm catch.四、短文改错题(共10 小题,共 20 分)假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下短文.短文中共有10处错误,每句中最多有两处.错误涉及一个单词的增加、删除或修改.增加:在缺词处加一个漏字符号(∧),并在此符号下面写出该加的词.删除:把多余的词用斜线(\)划掉.修改:在错的词下划一横线,并在该词下面写出修改后的词.注意:1.每处错误及其修改均仅限一词;2.只允许修改10处,多者(从第11处起)不计分.One day, a young man,whom couldn’t get back home,came into my office to ask for help.He said his mother was disabled.His phon e had stolen with his wallet and he hadn’t contacted her for the past two d ays.However,his job was assessing housing applications,not provide money for travel.I asked him to wait outside unless I finished my work.After work I drove him all the way home.We arrive at his mother’s ho use at 10:30p.m..She was in a wheelchair and she answered a door.I saw tears in her e ye as she thanked for me.I just hoped that if my son experienced nothing sim ilar,someone would be nicely enough to bring him home to me.五、书面表达(共1 小题,共30 分)共享单车(sharing bikes)的出现,为大家带来了方便.同时,也反映出一些问题.例如,随意停放,影响行人通行;故意破坏车辆,造成维护成本增加,并影响他人正常使用,等等.请针对此现象,写一封倡议书,号召大家文明用车.要点提示:1、共享单车的好处;2、使用过程中出规的问题;3、如何做到文明用车.写作要求:1、文章要涵盖上述要点,并适当增加细节.2、字数:不少于100字.高二英语参考答案一、阅读理解1-4.[ “B”, “C”, “A”, “B” ]5-8.[ “A”, “B”, “D”, “D” ]9-12.[ “D”, “C”, “C”, “A” ]13-15.[ “C”, “D”, “D” ]16-20.[ “A”, “E”, “F”, “C”, “G” ]二、完形填空21-40.[ “C”, “B”, “D”, “A”, “C”, “B”, “A”, “D”, “B”, “A”, “A”, “D”, “A”, “C”, “A”, “C”, “B”, “C”, “C”, “A” ]三、语法填空41-50.[ “unlucky”,“the”,“tying”, “led”, “until”, “him”, “as”, “fastened”, “prisoner”,“was eaten” ]四、语法填空One day, a young man,couldn’t get back home,came into my office to ask for help.He said his mother was disabled.His phon e had∧stolen with his wallet and he hadn’t contacted her for the past two days.How ever,job was assessing housing applications,not money for travel.I asked him to wait outside I finished my work.After work I drove him all the way home.We at his mother’s house at 10:30p.m..She was in a wheelchair and she answered a door.I saw tears in heras she thanked for me.I just hoped that if my son experienced similar,someone would be enough to bring him home to me.详解:51.whom改为who 考查定语从句.分析句子结构可知这是一个定语从句,先行词a young man在从句中作主语,用有关系代词who.52.加been 考查动词语态.His phone与steal之间是动宾关系,用过去完成时的被动语态.53.his改为my 考查代词.根据上下文语境,此处应是“我的工作”,用代词my.54.provide改为providing 考查动名词.assessing housing applications和providing money for travel是并列表语,都是动名词作表语.55.unless改为until 考查连词.根据句意:我让他在外面等到我完成工作.用连词until.56.arrive改为arrived 考查动词时态.全文讲述的是过去的事情,要用一般过去时态.57.eye改为eyes 考查名词复数.人的眼睛有两只,要用复数形式.58.去掉for 考查词语用法.thank是及物动词,后接宾语时不需要介词.59.nothing改为something 考查不定代词.根据句意:如果我的儿子经历相似的事情.用不定代词something.60.nicely改为nice 考查形容词.be动词后用形容词作表语.五、书面表达My Views on Sharing bikes Presently,in big cities like Shanghai and Guangzhou,sharing bikes have become increasingly popular.A large number of sharing bikes can be found and rented at a low price.(高分句型一)Moreover,you can park the bike almost anywhere you like.Urban transportation has thus been made much more convenient and even revolutionized.However,along with i ts rapid development,sharing bikes also bring some problems,including random parking,vandalism and possession of sharing bikes,etc.(高分句型二)To solve these problems,there are some measures for the authorities to take.Fir stly,the government could implement more strict laws and rules to regulate the operation and management of sharing bikes.Secondly,the public should raise their awareness of using sharing bikes reasonably.Lastly,urban transportation system s hould be upgraded and improved to accommodate automobiles,bikes and pedestrians.To conclude,a sensible attitude should be held toward sharing bi kes.With effective and efficient measures taken,and efforts made by those involved,it can be expected that sharing bikes will play a contributive and constructive role in urban public transportation.(高分句型三)。
甘肃省武威第五中学2017_2018学年高一数学下学期第二次月考试题201806270127
甘肃省武威第五中学2017-2018学年高一数学下学期第二次月考试题满分150分时间120分钟一、选择题(本大题共12小题,每小题5分,共60分.在每个小题给出的四个选项中,只有一项是符合题目要求的选项,请将正确选项填涂到答题卡的指定位置.)1.已知变量x,y之间具有线性相关关系,其散点图如图所示,则其回归方程可能为() ^ ^A.y=1.5x+2 B.y=-1.5x+2^ ^C.y=1.5x-2 D.y=-1.5x-22.若下列程序执行的结果是2,则输入的x的值是()I N PUT xIF x>=0THENy=xELSEy=-xEND IFPRINT yENDA.2B.-2C.2或-2D.03.如下程序运行后,输出的值是()i=0DOi=i+1LOOP UNTIL2∧i>2 017i=i-1PRINT iENDA. 8B. 9C. 11D.10- 1 -4.利用秦九韶算法求多项式7x3+3x2-5x+11在x=23的值时,下列数用不到的是()A. 164B. 3 767C. 86 6525.执行如图所示的程序框图,若输出k的值为8,则判断框内可填入的条件是()A. s≤?B. s≤?.C. s≤?D. s≤?6.当m=7,n=3时,执行如图所示的程序框图,输出的S值为()A.7B.42C.210D.8407.执行两次下图所示的程序框图,若第一次输入的x的值为7,第二次输入的x的值为9,则第一次、第二次输出的a的值分别为()A. 0,0- 2 -B. 1,1C. 0,1D. 1,08.阅读如图所示的程序框图,运行相应的程序,则输出S的值为()A. -10B. 6C. 14D. 189.从一箱产品中随机地抽取一件,设事件A={抽到一等品},事件B={抽到二等品},事件C={抽到三等品},且已知P(A)=0.65,P(B)=0.2,P(C)=0.1.则事件“抽到的是二等品或三等品”的概率为()A.0.7B.0.65C.0.35D.0.310.有4张卡片上分别写有数字1,2,3,4,从这4张卡片中随机抽取2张,则取出的2张卡片上的数字之和为奇数的所有基本事件数为()A.2B.3C.4D.611.欧阳修在《卖油翁》中写道:“(翁)乃取一葫芦置于地,以钱覆其口,徐以杓酌油沥之,自钱孔入,而钱不湿”,可见卖油翁的技艺之高超,若铜钱直径3 cm,中间有边长为1 cm的正方形小孔, 随机向铜钱上滴一滴油(油滴大小忽略),则油恰好落入孔中的概率是()A. B. C. D.12. 随机掷两枚质地均匀的骰子,它们向上的点数之和不超过5的概率记为p1,点数之和大于5 的概率记为p2,点数之和为偶数的概率记为p3 ,则()A. p1<p2<p3B.p1<p3<p2C.p2<p1<p3D.p3<p1<p2- 3 -二、填空题(本大题共4小题,每小题5分,共20分,请将正确答案填写到答题卡的指定位置.)13. 某工厂生产A,B,C三种不同型号的产品,产品数量之比依次为2:3:5,现用分层抽样方法抽出一个容量为n的样本,样本中A种型号产品有16件,那么此样本的容量n=________ 14.已知x与y之间的一组数据如下表,根据表中提供的数据,求出y关于x的线性回归方程为yˆbx0.35,那么b的值为________15. 如图,茎叶图记录了甲、乙两名射击运动员的5次训练成绩(单位:环),则成绩较为稳定的那位运动员成绩的方差为___________.16.某班的全体学生参加消防安全知识竞赛,成绩的频率分布直方图如图,数据的分组依次为:[20,40),[40,60),[60,80),[80,100].若低于60分的人数是15,则该班的学生人数是___________.三、解答题:(本大题6小题,17小题10分,18—22小题,每题12分,共70分. 解答应写出文字说明,演算步骤或证明过程. 将解答写在答题卡的指定位置.)17.(本小题满分10分)求三个数168,56,264的最大公约数.18.(本小题满分12分)在圆O:x2+y2=1的某一直径上随机地取一点Q.试求过点Q且与该直径垂直的弦的长度不超过1的概率.- 4 -19.(本小题满分12分) PM2.5是指大气中直径小于或等于2.5微米的颗粒物,也称为可入肺颗粒物,我国PM2.5标准采用世界卫生组织设定的最宽限值,PM2.5日均值在35微克/立方米以下空气质量为一级;在35微克/立方米~75微克/立方米之间空气质量为二级;在75微克/立方米及其以上空气质量为超标.某试点城市环保局从该市市区2016年全年每天的PM2.5监测数据中随机抽取6天的数据作为样本,监测值茎叶图(十位为茎,个位为叶)如图所示,若从这6天的数据中随机抽出2天,(1)求恰有一天空气质量超标的概率;(2)求至多有一天空气质量超标的概率.20.甲、乙两家商场对同一种商品开展促销活动,对购买该商品的顾客两家商场的奖励方案如下:甲商场:顾客转动如图所示的圆盘,当指针指向阴影部分(图中两个阴影部分均为扇形,且每个扇形的圆心角均为,边界忽略不计)即为中奖.乙商场:从装有2个白球、2个蓝球和2个红球(这些球除颜色外完全相同)的盒子中一次性摸出2球,若摸到的是2个相同颜色的球,则为中奖.试问:购买该商品的顾客在哪家商场中奖的可能性大?请说明理由.- 5 -。
甘肃省武威第五中学2017-2018学年高二下学期第二次月考数学(文)试题(解析版)
甘肃省武威第五中学2017-2018学年高二下学期第二次月考数学(文)试题一、选择题(共12 小题,每小题 5 分,共60 分)1.是虚数单位,等于()A. B. C. D.【答案】A【解析】【分析】直接计算即得解.【详解】由题得原式=1-1=0.故答案为:A【点睛】本题主要考查复数的运算,意在考查学生对该知识的掌握水平和基本的计算能力.2.根据右边程序框图,若输出的值是4,则输入的实数的值为( )A. B. C. 或 D. 或【答案】D【解析】若,又,得;;若,得,不满足,满足.综上知实数的值为或.故选D.3.复数满足,则的虚部为()A. B. C. D.【答案】C【解析】依题意,故虚部为.4. 一名中学生在家庭范围内推广“节水工程”﹣﹣做饭、淘米、洗菜的水留下来擦地或浇花,洗涮的水留下来冲卫生间(如图),该图示称为()A. 流程图B. 程序框图C. 组织结构图D. 知识结构图【答案】A【解析】流程图主要用来说明某一过程.这种过程既可以是生产线上的工艺流程,也可以是完成一项任务必需的管理过程.结构图:指以模块的调用关系为线索,用自上而下的连线表示调用关系并注明参数传递的方向和内容,从宏观上反映事物层次结构的图形.本图示表示了“节水工程”中水的用途走向,所以是流程图,故选A。
5.在复平面内,复数对应的点位于()A. 第一象限B. 第二象限C. 第三象限D. 第四象限【答案】C【解析】试题分析:在复平面内所对应的点坐标为,位于第三象限,故选C.考点:复数的代数运算及几何意义.6.某成品的组装工序流程图如图所示,箭头上的数字表示组装过程中所需要的时间(小时),不同车间可同时工作,同一车间不能同时做两种或两种以上的工作,则组装该产品所需要的最短时间是()A. 11小时B. 13小时C. 15小时D. 17小时【答案】B【解析】经到的时间为小时,经、到时间为小时;经到时间为小时;经到时间为小时,故到三道工序都完成的最短时间就为小时,则经到时间为小时,即组装该产品所需要的最短时间是小时,故选B.7.复数(为虚数单位),为的共轭复数,则下列结论正确的是()A. 的实部为B. 的虚部为C.D.【答案】C【解析】【分析】先求出,再逐一判断每一个选项即得解.【详解】由题得所以的实部为1,虚部为-2,所以选项A和B都是错误的;,所以选项C是正确的;,所以选项D是错误的.故答案为:C【点睛】(1)本题主要考查复数的计算和共轭复数,考查复数的实部和虚部的概念,意在考查学生对这些知识的掌握水平和基本的计算能力.(2) 注意复数的实部是a,虚部是“i”的系数b,不包含“i”,不能写成bi.8.已知复数满足,则()A. B. 41 C. 5 D. 25【答案】C【解析】,故选C。
甘肃省武威第五中学2017-2018学年高二上学期第一次月考数学试题含答案
2017—2018学年第一学期武威五中高二年级数学阶段性测试卷命题人:张玉婷一、 选择题(每题5分,共60分)1。
错误!+1与错误!-1,两数的等比中项是( )A .1B .-1C .±1 D.错误! 2、在△ABC 中,a =3,b =7,c =2,那么B 等于( )A . 30°B .45°C .60°D .120°3.等比数列{a n }中,a n ∈R +,a 4·a 5=32,则log 2a 1+log 2a 2+…+log 2a 8的值为( )A .10B .20C .36D .1284、在△ABC 中,a =10,B=60°,C=45°,则c 等于 ( )A .310+B .()1310-C .13+D .3105.在等差数列{a n }中,已知a 1+a 4+a 7=39,a 2+a 5+a 8=33,则a 3+a 6+a 9的值为( )A .30B .27C .24D .216、在△ABC 中,a =32,b =22,B =45°,则A 等于( ) A .30° B .60° C .60°或120° D . 30°或150°7、在△ABC 中,3=AB ,1=AC ,∠A =30°,则△ABC 面积为 ( ) A . 23B .43C .23或3D .43或238.已知某等差数列共有10项,其奇数项之和为15,偶数项之和为30,则其公差为( )A .5B .4C .3D .29.设数列{a n },{b n }都是等差数列,且a 1=25,b 1=75,a 2+b 2=100,那么由a n +b n 所组成的数列的第37项的值为( )A .0B .37C .100D .-3710、在△ABC 中,3,4AB BC AC ===,则AC 上的高为 ( )A .BC .32D . 11.记等差数列{a n }的前n 项和为S n ,若S 2=4,S 4=20,则该数列的公差d 为( )A .7B .6C .3D .212.数列{a n }的前n 项和S n =2n 2-3n +3,则a 4+a 5+…+a 10等于( )A .171B .21C .10D .161二、填空题(每小题5分,共20分)13.三角形两条边长分别为3 cm,5 cm ,其夹角的余弦是方程5x 2-7x -6=0的根,则此三角形的面积是________.14.一艘船以20 km/h 的速度向正北航行,船在A 处看见灯塔B 在船的东北方向,1 h 后船在C 处看见灯塔B 在船的北偏东75°的方向上,这时船与灯塔的距离BC 为______.15.等比数列{a n }中,S 3=3,S 6=9,则a 13+a 14+a 15=________.16.已知等差数列{a n }中,a 错误!+a 错误!+2a 3a 8=9,且a n <0,则S 10为三、解答题(本题共70分)17.(本题10分)已知△ABC的内角A、B、C所对的边分别为a、b、c,且a=2,cos B=错误!。
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2017-2018学年第二学期期末考试高一英语试卷(考试时间:90分钟试卷满分:120分)第一部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。
AThe Harvard Student-led Walking TourWe welcome our neighbors to stop by the Harvard University Events & Information Centre, located in the Holyoke Centre Arcade at 1350 Massachusetts Avenue in the heart of Harvard Square in Cambridge.Let a student take you and your family, school, or organization on an engaging, hour-long free historical tour of the Harvard campus. The tours leave from the Events & Information Centre. Not only will you discover the location of fascinating exhibition and programmers on campus, you will also see Harvard’s rich sampling of American history and architecture from the colonial period to the present.Schedule of ToursTours leave the Events & Information Centre at 10 a.m. and 2 p.m. Monday through Friday, and at 2 p.m. on Saturday through the academic year (February 4 through May 2; September 23 through December 16).Summer tours (June 24 through August 15)are offered at 10 a.m.,11:15 a.m., 2 p.m., and 3:15 p.m. Monday through Saturday. Reservations for special tours of 20 or more people may be made by calling the Events & Information Centre at (617)495-1573 or emailing icenter@ .NOTE:Prospective(未来的) students may take tours originating at the Harvard Admission Office, located at Byerly Hall on 8 Garden Street in Cambridge. From April through August, the Admissions staff conducts an information session at l0 a.m., followed by an 11 a.m. tour. Monday through Friday. For more information on tours for prospective students, please callat(617)495-1551.Harvard University Events & Information Centre.1. The above ad is mainly intended for ____________.A. foreign visitorsB. high school studentsC. teachersD. Harvard University’s students2. How many summer tours are offered every week?A. 4.B. 6.C. 20.D. 24.3. A student who wants more information on tours may ____________.A. call (617)495-1573B. call (617)495-1551C. email icenter@ D. go to the Events & Information Centre【答案】1. B 2. D 3. B【解析】【分析】这是一篇广告类阅读。
文章介绍了哈佛大学信息中心的一些游览安排。
【1题详解】推理判断题。
答案定位在最后一段For more information on tours for prospective students, please call at(617)495-1551.可知这个广告是面向未来的大学生的,也就是高中生,故选B。
【2题详解】推理判断题。
答案定位在Schedule of Tours部分Summer tours (June 24 through August 15)are offered at 10 a.m.,11:15 a.m., 2 p.m., and 3:15 p.m. Monday through Saturday.可知夏季旅游安排是周一到周六,每天四次,因此每周是4*6=24,选D。
【3题详解】细节理解题。
答案定位在最后一段For more information on tours for prospective students, please call at(617)495-1551.可知想要获得关于这次旅游更多信息的学生,请致电(617)495-1551,故选B。
【点睛】细节理解题具体方法与步骤如下:1.略读材料,大概了解原文,掌握中心或主旨。
文章介绍了哈佛大学信息中心的一些游览安排。
2.按文章的体裁,作者写作的组织模式及有关的信息词。
如for example, first, second…等预测应该到何处寻找自己所需要的事实。
3.将精力放在寻找你所需要的细节上。
快速通篇跳读,全文扫视,找到细节出处,待找到含细节句子时,放慢速度,仔细核对比较内容,直至找到答案。
如小题3题干询问一个想要获得关于这次旅游更多信息的学生,应该如何联系?答案定位在最后一段For more information on tours for prospective students, please call at(617)495-1551.可知想要获得关于这次旅游更多信息的学生,请致电(617)495-1551,故选B。
BA couple in England could lose their home due to the fact that they want to live with their pets. Clive and Rose Restall live in their rented home in southwest England with their twenty-one pet guinea pigs (豚鼠). The owners of the house, Plymouth Community Homes (PCH), say the couple have too many pets in the house. PCH want Mr and Mrs Restall to get rid of the guinea pigs. A spokesperson from the PCH said the number of animals in the couple’s house is unacceptable. The spokesperson added that the number of pets is not allowed in the contract the couple signed to rent the house. The PCH warned Mr and Mrs Restall that they must move out of the house if they do not get rid of the guinea pigs.Mr Restall, 57, said he needs his guinea pigs because they have helped him fight cancer. Doctors told him he had cancer in 2010. Soon after, he bought several guinea pigs to help take his mind off his cancer. He said his new pets made him happy again because they made him forget about his cancer. He told reporters that his guinea pigs are mystic ― they have special powers to help people. He said the animals have even helped his neighbours with personal problems. Mr Restall spoke about his pets, saying, "They’ve helped me through my cancer. They’ve helped me cope."He added, "The local community love them just as much as I do. I sometimes loan them out to people if they need someone to talk to."4. Mr and Mrs Restall could lose their rented home because ____________.A. there are too many guinea pigs in their homeB. the owners want them to kill the guinea pigsC. the animals in the couple’s house is unacceptableD. they don’t want to let go of their pets5. What can we learn from the passage?A. Mr Restall had cancer at 57.B. The guinea pigs helped Mr Restall feel relieved.C. Mr Restall’s neighbours are tired of the guinea pigs.D. Guinea pigs can cure people of cancer.6. What does the word "loan" in the last paragraph mean?A. Send.B. Keep.C. Lend.D. Take.7. What is the main idea of the passage?A. We can fight with cancer with pets.B. We should treat our pets well.C. A couple might lose their home if they hold on to their pets.D. Pets are our friends.【答案】4. D 5. B 6. C 7. C【解析】【分析】这是一篇记叙文。