【全国百强校】青海省平安县第一高级中学2016-2017学年高一上学期期中考试物理试题(原卷版)
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一.选择题(4*10=40)1、下面说法中正确的是()A.速度变化的运动必定是曲线运动B.加速度恒定的运动不可能是曲线运动C.加速度变化的运动必定是曲线运动D.做曲线运动的物体速度方向必定变化【答案】D考点:曲线运动【名师点睛】此题是对曲线运动的考查;要知道曲线运动的速度方向一定变化,速度的大小可能不变,故曲线运动一定是变速运动,加速度可以是变化的,也可以是不变的;所受的力可能是恒力,也可能是变力.2、如图所示,在地面上发射一个飞行器,进入近地圆轨道Ⅰ并绕地球运行,其发射速度v应满足()A.v<7.9 km/s B.v=7.9 km/s C.v=11.2 km/s D.v>11.2 km/s【答案】B【解析】试题分析:依据第一宇宙速度为最小发射速度,可知在地面上发射一个飞行器,进入近地圆轨道Ⅰ并绕地球运行,其发射速度v应满足v=7.9km/s,故B正确,ACD错误.故选B.考点:宇宙速度【名师点睛】掌握第一宇宙速度v=7.9km/s的两个含义:它是发射地球卫星的最小发射速度,发射卫星必须达到这个速度;它是所有环绕卫星的最大环绕速度,此为第一宇宙速度考察的重点。
3、质量不同的物体,从不同高度以相同的速度同时水平抛出,不计空气阻力.下列说法正确的是()A.质量大的物体先落地B.质量小的物体先落地C.低处的物体先落地D.高处的物体先落地【答案】C【解析】试题分析:不计空气阻力,物体作平抛运动,而平抛运动的竖直分运动是自由落体运动,由h=12gt2,得:t 可知高度h越大,物体运动的时间越长,所以低处的物体先落地.故ABD错误,C正确.故选C。
考点:平抛运动【名师点睛】本题关键抓住平抛运动的竖直分运动是自由落体运动;平抛运动的时间由初末位置的高度差决定,与初速度无关。
4、关于力和运动的关系,下列说法中不正确的是()A.做曲线运动的物体的合力不一定是变化的B.两个互成角度的匀变速直线运动的合运动可能是直线运动C.物体做曲线运动,其速度不一定改变D.平抛运动的物体在相等的时间内速度变化相同【答案】A考点:力和运动【名师点睛】解决本题的关键知道曲线运动的特点,掌握物体做直线运动还是曲线运动的条件,当物体所受的合力方向与速度方向不在同一直线上,物体做曲线运动,曲线运动的速度方向一定改变.平抛运动的加速度不变,在相等时间内的速度变化量相同。
一、选择题(本大题共25小题,每小题3分,共计75分。
在每小题给出的四个答案中,只有一个选项最符合题目要求。
)1.西周社会结构的基本次序是( )A.周王→卿大夫→诸侯→士 B.周王→诸侯→士→卿大夫C.周王→诸侯→卿大夫→士 D.周王→士→诸侯→卿大夫【答案】C【解析】考点:古代中国的政治制度•商周时期的政治制度•西周社会结构2. “以后子孙做皇帝时,并不许立丞相,臣下敢有奏请设立者,文武群臣即时劾奏,将犯人凌迟,全家处死。
”对这一史料的理解最准确的是( )A.秦始皇以“凌迟”等手段残害群臣 B.唐太宗设立三省六部制以取代丞相制C.宋太祖意在杜绝武将做丞相的现象 D.明太祖废除丞相以确保皇帝高枕无忧【答案】D【解析】试题分析:本题主要考查明太祖废除丞相。
根据材料信息,结合所学知识可知材料反映的是明太祖为加强皇权而废除丞相,选D是符合题意的,正确;史料是反映明太祖废除丞相而非秦始皇以“凌迟”等手段残害群臣,选项A不符合题意,排除;史料是反映明太祖废除丞相而非唐太宗设立三省六部制以取代丞相制,选项B不符合题意,排除;史料是反映明太祖废除丞相而非宋太祖意在杜绝武将做丞相的现象,选项C不符合题意,排除;故本题选D。
考点:古代中国的政治制度•明清君主专制制度的加强•明太祖废除丞相【名师点睛】当今历史试题的选材很多是学生平时所从未接触过的,但无论怎样选材其实都可以在教材上找到它们的本来“身影”。
因此,做此类试题时可以采取回归教材法,即根据历史事件、历史现象、历史人物以及其发生的时间、空间等因素准确定位所考查的点是做对此类试题的关键所在。
3、近代一位英国作家打一个比喻说:“你拿了我的鸦片,我就拿你的岛屿,这样我们清账了。
”这里所说的被英国拿走的岛屿指( )A.台湾岛 B.香港岛 C.澎湖列岛 D.辽东半岛【答案】B【解析】考点:近代中国的民主革命•1840至1900年间西方列强侵略与中国人民的反抗斗争•鸦片战争4、血战台儿庄》是1985年中国大陆拍摄的第一部反映抗战时期国民党正面战场的影片,这部集纪实性、文献性、史诗性风格于一身的作品真实再现了抗日战争史中重要的一页,生动地记录了国民党爱国官兵可歌可泣的英雄业绩,塑造了一批国民党高级将领形象。
青海省平安县第一高级中学2016-2017学年高一上学期期末测试数学试题(2)一、选择题:本大题共14小题,每小题4分,共56分.在每小题的4个选项中,只有一项是符合题目要求的.1.设全集U =R ,A ={x |x >0},B ={x |x >1},则A ∩U B =(). A .{x |0≤x <1}B .{x |0<x ≤1}C .{x |x <0}D .{x |x >1}2.下列四个图形中,不是..以x 为自变量的函数的图象是( ).A . B. C. D. 3.已知函数 f (x )=x 2+1,那么f (a +1)的值为( ). A .a 2+a +2B .a 2+1C .a 2+2a +2D .a 2+2a +14.下列等式成立的是( ). A .log 2(8-4)=log 2 8-log 2 4 B .4log 8log 22=48log 2 C .log 2 23=3log 2 2D .log 2(8+4)=log 2 8+log 2 45.下列四组函数中,表示同一函数的是( ). A .f (x )=|x |,g (x )=2x B .f (x )=lg x 2,g (x )=2lg xC .f (x )=1-1-2x x ,g (x )=x +1D .f (x )=1+x ·1-x ,g (x )=1-2x 6.幂函数y =x α(α是常数)的图象( ). A .一定经过点(0,0) B .一定经过点(1,1) C .一定经过点(-1,1)D .一定经过点(1,-1)7.国内快递重量在1 000克以内的包裹邮资标准如下表:如果某人从北京快递900克的包裹到距北京1 300 km 的某地,他应付的邮资是( ). A .5.00元B .6.00元C .7.00元D .8.00元8.方程2x =2-x 的根所在区间是( ). A .(-1,0)B .(2,3)C .(1,2)D .(0,1)9.若log 2 a <0,b⎪⎭⎫⎝⎛21>1,则( ).A .a >1,b >0B .a >1,b <0C .0<a <1,b >0D .0<a <1,b <010.函数y =x 416-的值域是( ). A .[0,+∞)B .[0,4]C .[0,4)D .(0,4)11.下列函数f (x )中,满足“对任意x 1,x 2∈(0,+∞),当x 1<x 2时,都有f (x 1)>f (x 2)的是( ).A .f (x )=x1 B .f (x )=(x -1)2 C .f (x )=e xD .f (x )=ln(x +1)12.奇函数f (x )在(-∞,0)上单调递增,若f (-1)=0,则不等式f (x )<0的解集是( ). A .(-∞,-1)∪(0,1) B .(-∞,-1)∪(1,+∞) C .(-1,0)∪(0,1)D .(-1,0)∪(1,+∞)13.已知函数f (x )=⎩⎨⎧0≤ 30log 2x x f x x ),+(>,,则f (-10)的值是( ).A .-2B .-1C .0D .114.已知x 0是函数f (x )=2x +x-11的一个零点.若x 1∈(1,x 0),x 2∈(x 0,+∞),则有( ). A .f (x 1)<0,f (x 2)<0 B .f (x 1)<0,f (x 2)>0 C .f (x 1)>0,f (x 2)<0D .f (x 1)>0,f (x 2)>0二、填空题:本大题共4小题,每小题4分,共16分.15.A ={x |-2≤x ≤5},B ={x |x >a },若A ⊆B ,则a 取值范围是 . 16.若f (x )=(a -2)x 2+(a -1)x +3是偶函数,则函数f (x )的增区间是 . 17.函数y =2-log 2x 的定义域是 .18.求满足8241-x⎪⎭⎫⎝⎛>x-24的x的取值集合是.三、解答题:本大题共3小题,共28分.解答应写出文字说明、证明过程或演算步骤.19.(8分) 已知函数f(x)=lg(3+x)+lg(3-x).(1)求函数f(x)的定义域;(2)判断函数f(x)的奇偶性,并说明理由.20.(10分)已知函数f(x)=2|x+1|+ax(x∈R).(1)证明:当a>2时,f(x)在R上是增函数.(2)若函数f(x)存在两个零点,求a的取值范围.21.(10分)某租赁公司拥有汽车100辆.当每辆车的月租金为3 000元时,可全部租出.当每辆车的月租金每增加50元时,未租出的车将会增加一辆.租出的车每辆每月需要维护费150元,未租出的车每辆每月需要维护费50元.(1)当每辆车的月租金定为3 600元时,能租出多少辆车?(2)当每辆车的月租金定为多少元时,租赁公司的月收益最大?最大月收益是多少?参考答案一、选择题 1.B 【解析】U B ={x |x ≤1},因此A ∩UB ={x |0<x ≤1}.2.C3.C 4.C 5.A 6.B 7.C 8.D 9.D【解析】由log 2 a <0,得0<a <1,由b⎪⎭⎫⎝⎛21>1,得b <0,所以选D 项.10.C【解析】∵ 4x >0,∴0≤16- 4x <16,∴x416-∈[0,4).11.A【解析】依题意可得函数应在(0,+∞)上单调递减,故由选项可得A 正确. 12.A 13.D 14.B【解析】当x =x 1从1的右侧足够接近1时,x-11是一个绝对值很大的负数, 从而保证f (x 1)<0;当x =x 2足够大时,x-11可以是一个接近0的负数, 从而保证f (x 2)>0.故正确选项是B . 二、填空题 15. (-∞,-2). 16.(-∞,0). 17. [4,+∞).18. (-8,+∞). 三、解答题19.解 (1)由⎩⎨⎧0303>->+x x ,得-3<x <3,∴ 函数f (x )的定义域为(-3,3). (2)函数f (x )是偶函数,理由如下:由(1)知,函数f (x )的定义域关于原点对称, 且f (-x )=lg(3-x )+lg(3+x )=f (x ), ∴ 函数f (x )为偶函数.20.解 (1)证明:化简f (x )=⎩⎨⎧1221 ≥22<-,-)-(-,+)+(x x a x x a因为a >2,所以,y 1=(a +2)x +2 (x ≥-1)是增函数,且y 1≥f (-1)=-a ; 另外,y 2=(a -2)x -2 (x <-1)也是增函数,且y 2<f (-1)=-a . 所以,当a >2时,函数f (x )在R 上是增函数.(2)若函数f (x )存在两个零点,则函数f (x )在R 上不单调,且点(-1,-a )在x 轴下方,所以a 的取值应满足⎩⎨⎧0022<-)<-)(+(a a a 解得a 的取值范围是(0,2).21.解 (1)当每辆车的月租金定为3 600元时,未租出的车辆数为500003600 3-=12,所以这时租出了100-12=88辆车.(2)设每辆车的月租金定为x 元,则租赁公司的月收益为f (x )=⎪⎭⎫ ⎝⎛50000 3100--x (x -150)-50000 3-x ×50=-501(x -4 050)2+307 050. 所以,当x =4 050 时,f (x )最大,其最大值为f (4 050)=307 050. 当每辆车的月租金定为4 050元时,月收益最大,其值为307 050元.安徽省江南十校2017年高考数学模拟试卷(理科)(3月份)一、选择题:本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.若,则|z|=()A.B.1 C.5 D.252.设集合A={x∈Z||x|≤2},,则A∩B=()A.{1,2} B.{﹣1,﹣2}C.{﹣2,﹣1,2} D.{﹣2,﹣1,0,2}3.已知平面向量=(1,m),=(2,5),=(m,3),且(+)∥(﹣),则m=()A.B.C.D.4.已知,则sinα(sinα﹣cosα)=()A.B.C.D.5.已知MOD函数是一个求余函数,其格式为MOD(n,m),其结果为n除以m的余数,例如MOD(8,3)=2.下面是一个算法的程序框图,当输入的值为36时,则输出的结果为()A.4 B.5 C.6 D.76.质地均匀的正四面体表面分别印有0,1,2,3四个数字,某同学随机的抛掷次正四面体2次,若正四面体与地面重合的表面数字分别记为m,n,且两次结果相互独立,互不影响.记m2+n2≤4为事件A,则事件A发生的概率为()A.B.C.D.7.《九章算术》是我国古代的数字名著,书中《均属章》有如下问题:“今有五人分五钱,令上二人所得与下三人等.问各德几何.”其意思为“已知A、B、C、D、E五人分5钱,A、B两人所得与C、D、E三人所得相同,且A、B、C、D、E每人所得依次成等差数列.问五人各得多少钱?”(“钱”是古代的一种重量单位).在这个问题中,E所得为()A.钱B.钱C.钱D.钱8.如图,网格纸上小正方形的边长为1,实线画出的是某多面体的三视图,则该多面体的体积为()A.20 B.22 C.24 D.269.设△ABC的面积为S1,它的外接圆面积为S2,若△ABC的三个内角大小满足A:B:C=3:4:5,则的值为()A.B.C.D.10.若函数f(x)的图象如图所示,则f(x)的解析式可能是()A.B.C.D.11.已知球的直径SC=6,A、B是该球球面上的两点,且AB=SA=SB=3,则棱锥S﹣ABC的体积为()A.B.C.D.12.设⌈x⌉表示不小于实数x的最小整数,如⌈2.6⌉=3,⌈﹣3.5⌉=﹣3.已知函数f(x)=⌈x⌉2﹣2⌈x⌉,若函数F(x)=f(x)﹣k(x﹣2)+2在(﹣1,4]上有2个零点,则k的取值范围是()A.B.C.D.二、填空题(每题5分,满分20分,将答案填在答题纸上)13.已知实x,y数满足关系,则|x﹣2y+2|的最大值是.14.若(x+y)3(2x﹣y+a)5的展开式中各项系数的和为256,则该展开式中含字母x且x 的次数为1的项的系数为.15.已知双曲线﹣=1上一点P(x,y)到双曲线一个焦点的距离是9,则x2+y2的值是.16.将函数y=sin2x﹣cos2x的函数图象向右平移m个单位以后得到的图象与y=k sin x cos x(k >0)的图象关于对称,则k+m的最小正值是.三、解答题(本大题共5小题,共70分.解答应写出文字说明、证明过程或演算步骤.)17.已知S n是数列{a n}的前n项和,且满足S n﹣2a n=n﹣4.(1)证明{S n﹣n+2}为等比数列;(2)求数列{S n}的前n项和T n.18.美团外卖和百度外卖两家公司其“骑手”的日工资方案如下:美团外卖规定底薪70元,每单抽成1元;百度外卖规定底薪100元,每日前45单无抽成,超出45单的部分每单抽成6元,假设同一公司的“骑手”一日送餐单数相同,现从两家公司个随机抽取一名“骑手”并记录其100天的送餐单数,得到如下条形图:(Ⅰ)求百度外卖公司的“骑手”一日工资y(单位:元)与送餐单数n的函数关系;(Ⅱ)若将频率视为概率,回答下列问题:②记百度外卖的“骑手”日工资为X(单位:元),求X的分布列和数学期望;②小明拟到这两家公司中的一家应聘“骑手”的工作,如果仅从日收入的角度考虑,请你利用所学的统计学知识为他作出选择,并说明理由.19.如图,四边形ABCD是边长为的正方形,CG⊥平面ABCD,DE∥BF∥CG,DE=BF= CG.P为线段EF的中点,AP与平面ABCD所成角为60°.在线段CG上取一点H,使得GH=CG.(1)求证:PH⊥平面AEF;(2)求二面角A﹣EF﹣G的余弦值.20.在平面直角坐标系中,直线不过原点,且与椭圆有两个不同的公共点A,B.(Ⅰ)求实数m取值所组成的集合M;(Ⅱ)是否存在定点P使得任意的m∈M,都有直线P A,PB的倾斜角互补.若存在,求出所有定点P的坐标;若不存在,请说明理由.21.已知函数f(x)=e x﹣1+a,函数g(x)=ax+ln x,a∈R.(Ⅰ)若曲线y=f(x)与直线y=x相切,求a的值;(Ⅱ)在(Ⅰ)的条件下,证明:f(x)≥g(x)+1;(Ⅲ)若函数f(x)与函数g(x)的图象有且仅有一个公共点P(x0,y0),证明:x0<2.请考生在22、23两题中任选一题作答,如果多做,则按所做的第一题记分.[选修4-4:坐标系与参数方程]22.已知P为曲线上的动点,直线C2的参数方程为(t为参数)求点P到直线C2距离的最大值,并求出点P的坐标.[选修4-5:不等式选讲]23.已知关于x的方程在x∈[0,3]上有解.(Ⅰ)求正实数a取值所组成的集合A;(Ⅱ)若t2﹣at﹣3≥0对任意a∈A恒成立,求实数t的取值范围.参考答案一、选择题1.B【解析】==,则|z|==1.故选:B.2.C【解析】A={﹣2,﹣1,0,1,2},B={x|x≥或x<0},故A∩B={﹣2,﹣1,2},故选:C.3.D【解析】根据题意,向量=(1,m),=(2,5),=(m,3),则;若(+)∥(﹣),(m+1)×(m﹣5)=(m+3)×(﹣1)解可得:;故选:D.4.A【解析】,故选:A.5.D【解析】模拟执行程序框图,可得:n=36,i=2,MOD(36,2)=0,j=1,i=3满足条件i<n,MOD(36,3)=0,j=2,i=4满足条件i<n,MOD(36,4)=0,j=3,i=5满足条件i<n,MOD(36,5)=1,i=6…∵∈N*,可得i=2,3,4,6,9,12,18,∴共要循环7次,故j=7.故选:D.6.B【解析】质地均匀的正四面体表面分别印有0,1,2,3四个数字,某同学随机的抛掷次正四面体2次,正四面体与地面重合的表面数字分别记为m,n,且两次结果相互独立,互不影响.基本事件总数N=42=16,记m2+n2≤4为事件A,则事件A包含听基本事件有:(1,1),(0,1),(1,0),共3个,∴事件A发生的概率为.故选:B.7.D【解析】由题意:设A=a﹣4d,B=a﹣3d,C=a﹣2d,D=a﹣d,E=a,则,解得a=,故E所得为钱.故选:D.8.C【解析】由三视图可知:该几何体是一个棱长为3正方体去掉3个棱长为1的小正方体剩下的部分.该几何体的体积V=33﹣3×13=24.故选:C.9.D【解析】在△ABC中,∵△ABC的三个内角大小满足A:B:C=3:4:5,∴A=45°,B=60°,C=75°,那么△ABC的面积为S1=ac sin B=a2=a2外接圆面积为S2=πR2,R=,∴=.故选D.10.B【解析】由题意,x=0,y<0,排除A,0>x>﹣1,x→﹣1,y→﹣∞,排除C,D选项中,f(﹣2)=5,f(﹣3)=,不符合,排除D.故选:B.11.D【解析】∵球的直径SC=6,A、B是该球球面上的两点,且AB=SA=SB=3,∴由条件:S﹣OAB为棱长为3的正四面体,其体积为=,同理,故棱锥S﹣ABC的体积为.故选:D.12.C【解析】令F(x)=0得f(x)=k(x﹣2)﹣2,作出函数y=f(x)和y=k(x﹣2)﹣2的图象如下图所示:若函数F(x)=f(x)﹣k(x﹣2)+2在(﹣1,4]上有2个零点,则函数f(x)和g(x)=k(x﹣2)﹣2的图象在(﹣1,4]上有2个交点,经计算可得k P A=5,k PB=10,k PO=﹣1,k PC=﹣,∴k的范围是[﹣1,﹣)∪[5,10).故选:C二、填空题13.5【解答】5 由条件可知:z=x﹣2y+2过点M(﹣1,3)时z=﹣5,|z|max=5,解:作出不等式组,对应的平面区域如图:由解得M(﹣1,3),由条件可知:z=x﹣2y+2过点M(﹣1,3)时z=﹣5,|z|max=5,故答案为:5.14.﹣7【解析】(x+y)3(2x﹣y+a)5的展开式中各项系数的和为256,令x=y=1,得23×(a+1)5=256,解得a=1,所以(x+y)3(2x﹣y+1)5的展开式中含字母x且x的系数为:.故答案为:﹣7.15.133【解析】双曲线﹣=1的a=4,b=6,c==2,不妨设点P(x,y)在右支上,由条件可知P点到右焦点(2,0)的距离为9,即为=9,且﹣=1,解出x=2,y=±9,则x2+y2=52+81=133.故答案为:133.16.2+【解析】将函数y=sin2x﹣cos2x=﹣cos2x的函数图象向右平移m个单位以后得到y=﹣cos2(x ﹣m)=﹣cos(2x﹣2m)的图象,根据所得图象与y=k sin x cos x=sin2x(k>0)的图象关于对称,设点P(x0,y0)为y=﹣cos(2x﹣2m)上任意一点,则该点关于对称点为在y=sin2x(k>0)的图象上,故有,求得k=2,sin(2x0﹣)=cos(2x0﹣2m),即cos(2x0﹣)=cos(2x0﹣2m),∴﹣2m=﹣+2kπ,k∈Z,即2m=﹣2kπ,k∈Z,故m的最小正值为,则k+m的最小正值为2+.三、解答题17.(1)证明:当n=1时,a1=S1,S1﹣2a1=1﹣4,可得a1=3,S n﹣2a n=n﹣4转化为:S n﹣2(S n﹣S n﹣1)=n﹣4(n≥2),即S n=2S n﹣1﹣n+4,所以S n﹣n+2=2[S n﹣1﹣(n﹣1)+2]注意到S1﹣1+2=4,所以{S n﹣n+2}为首项为4,公比为2等比数列;(2)由(1)知:,所以,于是==.18.解:(Ⅰ)∵百度外卖规定底薪100元,每日前45单无抽成,超出45单的部分每单抽成6元,∴当送餐单数n≤45,n∈N*时,百度外卖公司的“骑手”一日工资y=100,当送餐单数n>45,n∈N*时,百度外卖公司的“骑手”一日工资y=100+(n﹣45)×6=6n﹣170,n∈N*,∴百度外卖公司的“骑手”一日工资y(单位:元)与送餐单数n的函数关系为:(Ⅱ)①记百度外卖的“骑手”日工资为X(单位:元),由条形图得X的可能取值为100,106,118,130,P(X=100)==0.2,P(X=106)==0.3,P(X=118)==0.4,P(X=130)==0.1,∴X的分布列为:E(X)=100×0.2+106×0.3+118×0.4+130×0.1=112(元).②美团外卖“骑手”日平均送餐单数为:42×0.2+44×0.4+46×0.2+48×0.1+50×0.1=45所以美团外卖“骑手”日平均工资为:70+45×1=115(元)由①知,百度外卖“骑手”日平均工资为112元.故推荐小明去美团外卖应聘.19.证明:(1)连接AC,BD交于点O,连接OP,则O为BD中点,∴OP∥DE,∴OP⊥面ABCD.∴∠P AO为AP与面ABCD所成角,∵AP与平面ABCD所成角为60°,∴∠P AO=60°.在Rt△AOP中,.Rt△AHC中,.梯形OPHC中,.∴AP2+PH2=AH2,∴AP⊥PH,又EH=FH,∴PH⊥EF,又AP∩EF=P,∴PH⊥面AEF.解:(2)∵CG面ABCD,ABCD为正方形,∴如图所示建立空间直角坐标系.G(0,0,),E(,0,),F(0,,),H(0,0,),P(,,),=(﹣,,0),=(﹣,0,),,∵PH⊥面AEF,∴面AEF的法向量为,设面EFG法向量为,则,取x=,得,设二面角A﹣EF﹣G的平面角为θ,由题意θ为钝角,则cosθ=﹣=﹣.故二面角A﹣EF﹣G的余弦值为.20.解:(1)因为直线不过原点,所以m≠0,将与联立,消去y得:,因为直线与椭圆有两个不同的公共点A,B,所以△=8m2﹣16(m2﹣4)>0,解得,所以实数m的范围组成的集合M是;(2)假设存在定点P(x0,y0)使得任意的m∈M,都有直线P A,PB的倾斜角互补,即k P A+k PB=0,令,所以,整理得:,由(1)知x1,x2是的两个根,所以,代入(*)化简得,由题意解得或所以定点P的坐标为或,经检验,满足题意,所以存在定点P使得任意的m∈M,都有直线P A,PB的倾斜角互补,坐标为或.21.解:(Ⅰ)设曲线y=f(x)在Q(x1,y1)点处切线是y=x,则由于所以x1=1,y1=1,由题意知:,于是a=0.(Ⅱ)证明:令,当x∈(0,1)时,0<e x﹣1<1,所以,即,当x∈(1,+∞)时,1<e x﹣1,所以,即,于是F(x)=f(x)﹣g(x)=e x﹣1﹣ln x在(0,1)单调递减,(1,+∞)单调递增,其最小值是F(1)=1,所以F(x)=f(x)﹣g(x)≥1,于是原不等式成立.(Ⅲ)令G(x)=e x﹣1﹣ln x﹣ax+a(x>0),则函数f(x)与函数g(x)的图象有且仅有一个公共点P(x0,y0)等价于函数G(x)有且只有一个零点x0,,注意到为(0,+∞)上的增函数且值域为R,所以在(0,+∞)上有唯一零点x1,且G'(x)在(0,x1)上为负,(x1,+∞)上为正,所以G(x1)为极小值,又函数G(x)有唯一零点x0,结合G(x)的单调性知x1=x0,所以,即,即,即.令,显然,x0是H(x)的零点,,H'(x)在(0,1)上为正,(1,+∞)上为负,于是H(x)在(1,+∞)上单调递减,注意到,所以H(x)在(1,2)内有一个零点,在[2,+∞)内无零点,所以H(x)的零点一定小于2,从而函数f(x)与函数g(x)的图象有且仅有一个公共点P(x0,y0)时一定有x0<2.22.解:由条件:.设点,点P到C2之距离..此时cosθ=﹣,此时点.23.解:(Ⅰ)当x∈[0,3]时,2≤|2a﹣1|≤3且,∴.(Ⅱ)由(Ⅰ)知:,设g(a)=t•a+t2﹣3,则,可得或t≥3.。
平安一中2016-2017学年度上学期高一化学期中试卷总分:100分;考试时间:100分钟;试题满分100分,考试时间100分钟可能用到的相关原子的相对原子质量:H:1 C:12 N:14 O:16Na:23 Mg:24 Cl:35.5 S: 32一、选择题(本题共18小题,每小题3分,共54分,每小题只有一个正确答案)1.1998年诺贝尔化学奖授予科恩(美)和波普尔(英),以表彰他们在理论化学领域作出的重大贡献。
他们的工作使实验和理论能够共同协力探讨分子体系的性质,引起整个化学领域正在经历一场革命性的变化。
下列说法正确的是()A.化学不做实验,就什么都不知道B.化学不再需要实验C.化学不再是纯实验科学 D.未来化学的方向是经验化2、设N A表示阿伏加德罗常数,下列叙述中正确的是( )A.常温常压下,11.2L NH3所含的原子数为2N AB.常温常压下,80g SO3含有的氧原子数为3N AC.标准状况下,22.4L H2中所含原子数为N AD.2 L 0.3 mol·L-1 Na2SO4溶液中含0.6 N A个Na+3.下列化学药品与其危险化学品图形标志不一致的一组是()A.烧碱——1 B.甲烷——2 C.酒精——3 D.白磷——44.如果你家里的食用花生油不小心混入了大量的水,利用你所学的知识,最简便的分离方法是( )5.下列对于“摩尔”的理解正确的是()A.22.4LO2中所含氧气分子计量为1摩尔B.1mol氧含6.02×1023个O2C.摩尔是国际科学界建议采用的一种物理量D.摩尔是物质的量的单位,简称摩,符号为mol现有三组溶液:①汽油和氯化钠溶液②39%的乙醇溶液⑧碘水溶液,分离以上各混合液的正确方法依次是()A . 分液、萃取、蒸馏 B. 萃取、蒸馏、分液C . 分液、蒸馏、萃取 D. 蒸馏、萃取、分液过滤后的食盐水仍含有可溶性的CaCl2、MgCl2、Na2SO4等杂质,通过如下几个实验步骤,可制得纯净的食盐水:①加入稍过量的Na2CO3溶液;②加入稍过量的NaOH溶液;③加入稍过量的BaCl2 溶液;④滴入稀盐酸至无气泡产生;⑤过滤正确的操作顺序是()A.③②①⑤④ B.①②③⑤④ C.②③①④⑤ D.③⑤②①④8.下列说法中正确的是( )A.标准状况下,22.4L水中所含的分子数约为6.02×1023B.标准状况下,aL的氧气和氮气的混合物含有的分子数约为×6.02×1023C.常温常压下,48g O3气体含有的氧原子数为6.02×1023D.2.24L CO2中含有的原子数为0.3×6.02×10239. 在盛有碘水的试管中,加入少量CCl4后振荡,静置片刻后()A.整个溶液变紫色 B.整个溶液变为棕黄色C.上层为无色,下层为紫红色 D.下层无色,上层紫红色10.下列物质中含氢原子数最多的是()A.2molCH4 B.3molNH3 C.4molH3PO4 D.5molH211.下列说法错误的是()A.6.02×1023是阿伏加德罗常数的近似值B.阿伏加德常数个微粒的物质的量是1molC.1mol 12C原子的质量为12gD.硫酸的摩尔质量是98克12.下列说法正确的是()A. 在标准状况下,1mol水的体积是22.4LB. 1molH2所占的体积一定是22.4LC. 在标准状况下,N A个任何分子所占的体积约为22.4LD. 在标准状况下,质量为28g的N2,其体积约为22.4L将30 mL 0.5 mol·L―1的NaCl溶液加水稀释到500 mL,稀释后溶液中NaC l的物质的量浓度为()A.0.3 mol·L―1 B.0.03 mol·L―1C.0.05 mol·L―1D.0.04 mol·L―114.气体体积的大小,跟下列因素几乎无关的是()A.分子个数 B.温度 C.压强 D.分子直径15.下列离子检验的方法正确的是()A.某溶液+硝酸银溶液→产生白色沉淀,说明原溶液中有Cl-B.某溶液+氯化钡溶液→产生白色沉淀,说明原溶液中有SO42-C.某溶液+氢氧化钠溶液→产生蓝色沉淀,说明原溶液中有Cu2+D.某溶液+稀硫酸→生成无色无味的气体,说明原溶液中有CO32-16.下列配制1.0mol/L的NaOH溶液的操作不会造成误差的是()A.称量后转移固体时不小心把少量固体洒到烧杯外班级姓名学号座位号B.干净的容量瓶又用蒸馏水洗涤了一遍C.转移过程中不小心把几滴溶液滴在外面D.加水定容时,加水过多,倒出后并恢复到刻度线水平17.关于容量瓶的四种叙述:①是配制准确浓度溶液的仪器;②不宜贮存溶液;③不能用来加热;④使用之前要检查是否漏水。
2017-2018学年平安一中高一英语期中考试卷命题人:李长花第一部分听力(共两节,满分20分)第一节(共5小题;每小题1分,满分5分)听下面5段对话,每段对话后有一个小题,从题中所给的A、B、C 三个选项中选出最佳答案,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 is the woman going to do this evening?A.Go to the concertB.Go to the airportC.Pick up her father2.What probably caused the woman’s stomachache?A.The seafood B。
The medicine C. The cold3.What are the two speakers most probably going to buy?A.Apples B。
OrangesC. Strawberries。
4.How long has the woman been exercising?A.Three weeks B。
Three months C。
Sixmonths5.What does the man plan to do first during the summer vacation?A.Tour a cityB. See his brotherC. Go back home 第二节(共15小题;每小题1分,共15分)听下面五段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳答案,并标在试卷的相应位置。
听每段对话或独白前,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。
每段对话或独白读两遍.听第6段材料,回答第6、7题.6.How will the woman get to Emberton?A.In the man's car.B. On footC.By bus7.What’s the most probable relationship between the two speakers?A.ClassmatesB.Neighbors C。
2017-2018学年平安一中高一化学期中考试卷 考试时间:60分钟 命题人:白玉花相对原子质量:C:12 O:16 Cl:35.5 Na:23 N:14 S:32 一、选择题(各2.5分,共50分)1.以下实验装置一般不用于分离物质的是 ( )A B C D2.0.5L 1 mol· L -1FeCl 3溶液与0.2L 1 mol· L -1KCl 溶液中的Cl -的物质的量浓度之比 A .5 : 2 B .15 : 2 C .3 : 1 D .1 : 33.下列说法中正确的是 ( ) A. 1mol 任何气体的体积都约是22.4LB. lmolH 2和O 2的混合气体,在标准状况下的体积也是22.4LC. 有lmol H 2,当体积为22.4L 时,该气体一定处于标准状况D. 常温常压下,2mol 气体体积约为44.8L 4.下列叙述正确的是A. 1 mol CO 2 的质量为44g/molB. CO 2的摩尔质量等于CO 2的相对分子质量C. N A 个CO 2的质量与CO 2的相对分子质量在数值上相同D. CO 2的摩尔质量为44g 5.实验中需2 mol·L -1的Na 2CO 3溶液950mL ,配制时应选用的容量瓶的规格和称取Na 2CO 3的质量分别是A. 1000mL ,212gB. 1000mL ,201.4gC. 950mL,201.4gD. 950mL ,212g 6.对危险化学品要在包装上印有警示标志,下列化学品的名称与警示标志名称对应正确的是:( )A. 酒精——剧毒品B. 浓硫酸——腐蚀品C. 硝酸钾——放射物D. 烧碱——易爆品 7.欲配制100mL 1.0 mol/L Na 2CO 3溶液,正确的方法是( ) ① 将10.6 g Na 2CO 3 溶于100mL 水中班级 姓名 学号 座位号 .②将28.6g Na2CO3·10H2O溶于少量水中,再用水稀释至100 mL③将20 ml 5.0 mol/L Na2CO3溶液用水稀释至100 mLA.①② B.②③C.只有② D.①②③8.下列实验操作中正确的是A. 蒸发操作时,应使混合物中的水分完全蒸干后,才能停止加热B. 分液操作时,应先把下层液体从下口放出,然后再继续从下口放出上层液体C. 蒸馏操作时,应加沸石以防止溶液暴沸D. 萃取操作时,应选择有机萃取剂,且萃取剂的密度必须比水大9.下列关于胶体的知识说法正确的:()A. Fe(OH)3的胶体是带有正电荷,所以通上直流电后会发生电泳现象B. 用丁达尔现象可鉴别氯化钠的溶液和淀粉溶液C. 在沸水中加入饱和FeCl3溶液制取胶体化学方程式为:FeCl3+H2O=Fe(OH)3↓+3HClD. 用过滤的方法可以分离溶液和胶体10.下列实验操作先后顺序正确的是( )A.先装好药品,再检查装置的气密性B.先用双手握紧试管,再将导管插入水中检查装置气密性C.结束氢气还原氧化铜的实验时,先熄灭酒精灯后撤出导管D.实验装置的组装顺序是从左到右,从上到下11.下列操作方法错误的是()A. 过滤时,玻璃棒与三层滤纸的一边接触B. 过滤时,漏斗的下端紧贴烧杯内壁C. 加热试管内物质时,用酒精灯的外焰D. 向试管内滴加液体时,胶头滴管紧贴试管内壁12.同温同压下,两种气体的体积如果不相同,其主要原因是A.气体的分子大小不同 B.气体分子间的平均距离不同C.气体的物质的量不同 D.气体的性质不同13.检验Cl-时所用的试剂为AgNO3溶液和硝酸,硝酸的作用是()A.防止CO32-的干扰 B.防止Cl-的干扰 C.生成硝酸根 D.防止NO-3的干扰14.若要萃取碘水中的碘,可从以下物质中选出萃取剂:①汽油、②四氯化碳、③酒精,其中可选用的是A.①③ B.②③ C.①② D.①②③15.现有一瓶物质甲和乙的混合物,已知甲和乙的某些性质如下表。
2016-2017学年上学期期中考试高一地理试卷(满分:100分)一、单项选择题(每小题3分,共60分)1、目前人类所能观测到的宇宙范围是()A、河外星系B、银河系C、总星系D、地月系2、太阳能量的来源是()A、氢气燃烧B、氦气爆炸C、核裂变反应D、核聚变反应3、太阳活动强弱的标志是()A、X射线B、Y射线C、黑子的多少和大小D、耀斑的强弱4、地球自转线速度最大的地方是()A、南北极点B、南北极圈C、南北回归线D、赤道5. 下列因素与地球上存在生命无关的是()A、地球的体积和质量适中B、地球自西向东绕日公转C、日地距离适中,地表温度适中D、地球附近大小行星各行其道,互不干扰6.我们日常生活中所说的一天是指()A、地球自转的真正周期B、地球公转的周期C、一个太阳日D、23时56分4秒7、太阳辐射对地球的影响,不.正确的是()A.太阳直接为地球提供了光、热资源B.地球上水、大气运动和生物活动的能量来自太阳辐射C.煤、石油等矿物燃料来源于地下,不是来源于太阳能D.太阳辐射能维持着地表的温度8、我们肉眼所看到的太阳是()A、太阳外部的整个大气层B、太阳内部C、太阳大气的色球层D、太阳大气的光球层9、成语“蜀犬吠日”,反映了四川盆地所缺乏的能源是A.太阳能 B水能 C核能 D生物能10.下列现象中,属于地球自转运动产生的是()A.昼、夜更替现象 B.昼、夜长短的变化C.正午太阳高度的变化 D.地球表面的昼、夜现象11、下列现象中,只能出现在赤道上的是()A.昼夜不等长 B.正午太阳高度为0°C.沿水平运动的物体发生偏转D.全年昼长均为12小时12、深秋或早春的晴夜,农民往往在田间熏烟以防霜冻,其原理是()A.直接加热大气B.通过熏烟增强大气逆辐射C.直接加热地面D.加大大气吸收太阳辐射的能力13、被誉为“地球生命保护伞的大气成分”是()A.氧气 B.臭氧 C.二氧化碳 D.氩气14、地球的内部圈层结构由外到里依次是()A.地核--地幔--地壳B.地幔--地核--地壳C.地壳--地幔--地核D.地壳--地核--地幔15、当东京(东九区)时间为6月10日21点时,西二区的区时()A. 6月10日10点 B .6月11日6点C .6月10日14点D .6月11日2点16、下图中正确表示地球自转方向的是()A.①③ B.②③ C.②④ D.①④17、引起大气运动的根本原因是()A、太阳辐射B、地区间冷热不均C、同一水平面上气压差D、地转偏向力18、地震发生时,在水中游泳的人会感到()A、左右摇晃B、先摇晃后颠簸C、先颠簸后摇晃D、上下颠簸19、下列所表示海陆间热力环流示意图,正确的是()A、①②B、②③C、①④D、②④20、下列四幅图能正确反映北半球近地面风向的是()二、综合题(每小题2分,共40分)21.读大气垂直分层图回答(1)填出大气层名称A B C(2)A层气温变化的规律是。
平安一中2016-2017学年第二学期期中考试高一(英语)试卷第一部分听力(20*1.5=30)1.Where are they talking probably?A. In a barber shopB. In a bakeryC. In a bookshop2.What does the woman mean?A.She found the book boringB. She likes the book very muchC. She finished the book yesterday3. What does the man think of Coliseum?A. It is smallB. It is popularC. It’s too far4. Why did Jason call Lily?A. To ask her about the homeworkB. To ask her to go to a concertC. To ask her to leave a message5. What does the man do probably?A. A shopkeeperB. A waiterC.A librarian第6段6. What is the relationship between the two speakers?A. ClassmatesB. NeighborsC. Colleagues7. Where are they talking?A. Outside a clothing shopB. In a clothing shopC. At a wedding party第7段8. Why does the woman invite the man to dinner?A. It is her birthdayB. It’s the man’s birthdayC. She has passed the driving test9. How will the two speakers go there?A. By busB. By carC. By taxi第8段10. Where does the conversation happen?A. In ItalyB. In JapanC. In America11. When does the man read newspaper?A. In the morningB. During the dayC. At night12. What can we learn about the man?A. He isn’t busy during the dayB. He likes reading the sports sectionC. He has worker for five years第9段13. Why did the man’s family move away from the old neighborhood?A. Because of its poor educationB. Because of its high rentC. Because of its long distance14. How old is man’s son?A. 7 years oldB. 8 years oldC. 9 years old15. How many kids will play in the park tomorrow?A. 2B. 4C. 316. What will the man do tomorrow morning?A. Make a saladB. Order a pizzaC. Buy some cakes第10段17. Where was the concert held?A. In the stadiumB. In the schoolC. At the square18. When did the incident happen?A. When the people were waiting outsideB. When the people rushed to get ticketsC. When the concert was nearly over19. Why did the police allow the concert to be held?A. To satisfy the pop groupB. To reduce the lossC. To avoid further trouble20. How did the fantasy members feel after hearing the incident?A. TouchedB. SadC. Astonished第二部分阅读(15*2=30) AThere is an English saying that “Laughter is the best medicine.” Until recently, few people took the saying seriously. Now however, doctors have begun to look into laughter and the effects it has on the human body. They have foundthat laughter can really improve people’s health.Tests were carried out to study the effects of laughter on the body. People watchedfunny films while doctors checked their hearts, blood pressure, breathing and muscles.It was found that laughter has similar effects to physical exercise. It increasesblood pressure, makes the heart beat quicker and makes people breathe deeper; it alsoworks on several groups of muscles in the face, the stomach, and even the feet. Iflaughter exercises the body, it must be beneficial.Other tests have shown that laughter appears to be able to reduce the effectsof pain on the body. In one experiment doctors produced pain in groups of studentswho listened to different radio programs. The group that tolerated(忍耐)the painfor the longest time was the group which listened to a funny program. The reason whylaughter can reduce pain seems to be that it helps to produce a kind of chemical inthe brain which diminishes both stress and pain.As a result of these discoveries, some doctors in the United States now holdlaughter clinics, in which they help to improve their patients’ condition by encouraging them to laugh. They have found that even if their patients do not reallyfeel like laughing, making them smile is enough to produce beneficial effects similarto those caused by laughter.21.According to the passage, which of the following statements is WRONG?A.Laughter is good for health B.Laughter can make you become old quickly C.Laughter helps to reduce pain. D.Laughter, just like physical exercise, is goodfor our body.22.The underlined word “diminishes” in the third paragraph means_____.A.delays B.prevents C.increases D. reduces23.Why do some doctors hold laughter clinics?A.Because they want to earn more money.B.Because they think they will help the patients recover from illnesses.C.Because they want to improve their patients’ condition.D.Because they want their patients to practice how to laugh24.According to the author, we should__________.A.laugh as much as possible B.watch more funny filmsC.smile all the time D.spend more time in laughter clinics BI came to study in the United States a year ago .Yet I did not know the real Americansociety until I was injured in a car accident because after the accident I had to see a doctor and go to court.After the accident .my roommate called a doctor for me. I was very grateful and determined to repay him one day. But the next day, he asked me to pay him $200 for what he had done. I was astonished. He had good reason to charge me, he said. And if I wanted to collect money from the person who was responsible for my injury, I’d have to have a good lawyer. And only a good doctor can help me get a good lawyer .Now that he had helped me find a good doctor, it was only fair that I should pay him.But every day I went to see the doctor, I had to wait about 50 minutes. He would see two or three patients at the same time, and often stop treating one so as to see another. Yet he charged me $115 each time .The final examination report consisted of ten lines, and it cost me $215.My lawyer was all smiles the first time we met. But after that he avoided seeing me at all. He knew very well the other party was responsible for the accident, yet he hardly did anything. He simply waited to collect his money. He was so irresponsible that I decided to dismiss him. And he made me pay him $770.Now I had to act as my own lawyer. Due to my inexperience, I told the insurance company the date I was leaving America. Knowing that, they played for time…and I left without getting a cent.25. The author’s roommate offered to help him because________.A. he felt sorry for the authorB. he thought it was a chance to make some moneyC. he knew the doctor was a very good oneD. he wanted the author to have a good lawyer26. A good doctor is essential for the author to __________.A. be properly treatedB. talk with the person responsible for the accidentC. recover before he leaves AmericaD. eventually get the responsible party to pay for his injury27. The word“charge”in the third paragraph means_________.A. be responsibleB. accuseC. ask as a priceD. claim28. Both the doctor and the lawyer in this passage are very__________.A. friendlyB. selfishC. professionalD. Busy29. What conclusion can you draw from the story?A. Going to court is something very common in America.B. One must be very careful while driving a car.C. There are more bad sides in America than good sides.D. Money is more important than other things in the US.CWhen I was about 12, I had an enemy, a girl who liked to point out my shortcomings(缺点). Week by week her list grew: I was very thin, I wasn’t a good student,I talkedtoo much, I was too proud, and so on. I tried to hear all this as long as could.At last, I became very angry. I ran to my father with tears in my eyes.He listened to me quietly, then he asked. “Are the things she says true or not?Janet, didn’t you ever wonder what you’re really like? Well, you now have thatgirl’s opinion. Go and make a list of everything she said and mark the points thatare true. Pay no attention to the other things she said.”I did as he told me. Tomy great surprise, I discovered that about half the things were true. Some of themI couldn’t chan ge (like being very thin), but a good number I could—and suddenlyI wanted to change. For the first time I go to fairly clear picture of myself.I brought the list back to Daddy. He refused to take it. “That’s just for you,”he said. “You know better than anyone else the truth about yourself. But you haveto learn to listen, not just close your ears in anger and feeling hurt. When something said about you is true, you’ll find it will be of help to you. Our world isfull of people who think t hey know your duty. Don’t shut your ears. Listen to themall, but hear the truth and do what you know is the right thing to do.” Daddy’sadvice has returned to me at many important moments. In my life, I’ve never had abetter piece of advice.30.What did the father do after he had heard his daughter’s complaint?A. He told her not to pay any attention to what her “enemy” had said.B. He criticized (批评) her and told her to overcome her shortcomings.C. He told her to write down all that her “enemy” had said about her and pay attentiononlyto the things that were true.D. He refused to take the list and have a look at it.31.What does “Week by week her list grew” mean?A. Week by week she discovered more shortcomings of mine and pointed them out tome.B. She had made a list of my shortcomings and she kept on adding new ones to it sothatit was growing longer and longer.C. I was having more and more shortcomings as time went on.D. Week by week, my shortcomings grew more serious.32.Why did her father listen to her quietly?A. Because he believed that what her daughter’s “enemy” said was mostly true.B. Because he had been so angry with his daughter’s shortcomings that he wanted toshow thisby keeping silent for a while.C. Because he knew that his daughter would not listen to him at that moment.D. Because he w asn’t quite sure which girl was telling the truth.DTonight, my piano recital(钢琴演奏会) was the most important thing in my family.My grandparents were coming by plane to hear me play. Even my busy Aunt Dianne, whois on TV every night reading the news, was coming.But one thing was for sure. I would never win an award for my piano playing. Andthat’s just because the more I practiced, the more nervous I got. So there I was,on the stage, in my beautiful dress,and I sat down at the piano. But when I startedto play,I hit a wrong note. I told myself to start over. But then I hit the wrongnote again. It was as if I hadn’t practiced at all.Finally the disaster was over. I ran off the stage. I couldn’t understand whyaudience(观众) were clapping. But they were. My mom and dad had flowers for me andwe were all supposed to go out for a nice dinner, but I couldn’t. I just wanted togo home and cry and never go anywhere again. After we went back home, Aunt Diannejust came in and sat down on the side of my bed.“It was my first night on the air,” she said. “I had never been on televisionbefore and I made a mistake. I mispronounced my name and the name of the news show.And you know what? No one even noticed but me. Just like tonight, no one noticed—justyou.” Aunt Dianne was right. I think we are harder on ourselves than anyone elseis. Maybe I will leave my room. And maybe I’ll play the piano again.33. From the passage we can know Aunt Dianne.A. worked as an actressB. worked as a news broadcaster on TVC. worked as a hostess on TVD. hosted the piano recital34. What did the author learn from her piano performance?A. Don’t be too hard on yourself.B. Things seldom go as wellas people expect.C. No one will care what others have done.D. Never rely on yourself.35. What would be the best title for the text?A.A wonderful Piano recital performanceB. Support from my FamilyC.A lesson from Piano Recital DisasterD. Encouragement from the audience七选五(5*2=10)As we know, everyone can make mistakes, but don’t worry about it. The fol-lowingis what we should do when we make mistakes.Just admit (承认)it. Don’t think that our mistakes are caused by other__36__Don’t blame other people, and don’t cheat ourselves, either __37__ In orderto stop the problem from getting worse, we should act quickly to solve it. If we don’tact and deal with the problem quickly, it’ll only make u feel more stressed. Alsoit is necessary to make a plan of action and correct the mistake according toit. __38__ .__39__Those who have made the most mistakes can get an A, for they are the oneswho have learned the most. The more we learn from our mistakes, the cleverer we are.__40__ What caused us to make the mistake? How can we avoid making the samemistake in the future? When we act with a method to get a good result, do it thatway next time. If we don’t, we should stop, think about it, change it and try again.A. Realize that making mistakes is the best way to learn.B. Don’tbe afraid of failure.C. Be brave and face the fact that we have made the mistakes.D. Solve itat once.E. So be away from stress.F. So decide quickly and act.G. Think about what we can learn from our mistakes.第三部分完形填空(20*1.5=30)Dear Seth,You are only three years old, and at this point in your life you are not ableto understand this letter. But some day when you__41__, I hope you will find something__42_in what I am going to share with you.Life can be _43_. There will be people in your lif e who won’t be very nice.They’ll__44__you because you are different, _45___ for no good reason. You will alsoface heartbreak and might be __46__ by those you love. I hope you don’t have to face these too much. But such things __47__.Be open to life an yway. You’ll find cruelty(残忍) and _48_ in your journeythrough life , but don’t let that__49__ you from finding new things . Don’t retreat (退却)from life , and don’t __50__ or wall yourself off . Be open to new things, new experiences and new people. You will __51__ many times, but if you allow thatto stop you from trying, you will _52_ many chances, Do remember failure is a stepping stone to __53__.You will meet many people who will try to do __54_ than you, in school, in college,and at work. They’l l try to have nicer cars, bigger houses, nicer clothes, and soon. . To _55_, life is a competition. However, I believe life is a _56_. If you alwaystry your best to __57_others, you are wasting your life. Learn to enjoy your life__58_ and you will make it a journey of _59_ of learning and of love. Finally, know that I love you and always will. You are _60_a really wonderful journey, and I will always be there for you. Love, Dad 41. A. grow up B. show up C. cheer up D. give up 42. A. familiar B. valuable C. normal D. interesting 43. A. unkind B. peaceful C. equal D. simple 44. A. look at B. run after C. laugh at D. look after 45. A. if B. but C. so D. or 46. A. hurt B. found C. accepted D. impressed 47. A. matter B. work C. disappear D. happen 48. A. luck B. pain C. difference D. hope 49. A. protect B. encourage C. stop D. choose 50. A. forgive B. struggle C. compete D. hide 51. A. leave B. prepare C. escape D. fail 52. A. enjoy B. try C. miss D. meet 53. A. success B. life C. action D. sorrow座位号54. A. earlier B. better C. less D. faster55. A. you B. me C. him D. them56. A. challenge B. drama C. journey D. dream57. A. change B. pardon C. follow D. beat58. A. somewhere B. instead C. afterwards D. though59. A. cruelty B. danger C. happiness D. quietness60.A. starting B. destroying C. finishing D. replacing语法填空(10*1.5=15)Do you feel _61_difficult to be happy all the time? Now I’ll give you someTips _62_how to make yourself happy. One way is being _63_(self) because unselfishnessis the key factor _64_ (require) if you want to get along well with others. By _65_(say)being unselfish we mean we _66_not want everything our own way or demand the bestshare of everything. Another way is to look for good points in _67_people. You willfind most people pleasant to go with and it will surely make you happy. Third, youcan’t expect to be too perfect, _68_don’t be too unhappy when you make mistake. Everything will be Ok if you try to make things right. Finally, it is important to remember that while you are no _69_(bad) than others, chances you have may not bemuch better in this case, _70_ best way to be happy is to think yourself above other people.61.__________ 62. __________ 63._________ 64._________65.__________66.__________ 67.__________ 68._________ 69._________ 70.__________短文改错(10*1=10)I often imagine what my life will be like in the future. I thought my lifewill become very differently in ten years. I will be twenty-eight year old by thenand I will have my own family, probable with a lovely child. I hope I’ll work ina computer company a program designer. I’ll enjoy my work or get along well withmy workmates. I’ll do the good job in whatever I do. In my free time, I’ll continuetaken regular exercise, such as swimming, running and different ball games. Duringmy holidays, I’ll travel around the world. In a word, our life will be much more richer and more colorful.第四部分写作(25分) 假如你是李华,你的好友李娜要邀你一起去西藏旅行,但你得陪同父母去看望在乡下的爷爷奶奶,所以不能去。
一、选择题(本题共12小题,每小题3分,共36分)1.关于质点,下列说法正确的是()A.质量很小的物体都可以看作质点B.体积很小的物体都可以看作质点C.质量和体积都很小的物体才能看作质点D.质量和体积都很大的物体有时也可以看作质点【答案】D【解析】考点:考查了对质点的理解【名师点睛】解决本题要正确理解质点的概念:质点是只计质量、不计大小、形状的一个几何点,是实际物体在一定条件的科学抽象,能否看作质点物体本身无关,要看所研究问题的性质,看物体的形状和大小在所研究的问题中是否可以忽略.2.以下的计时数据,指时间间隔的是()A.由北京开往深圳的列车于22:18开出B.期中数学考试时间是2hC.数学考试9:40结束D.中央电视台每晚新闻联播节目19:00开播【答案】B【解析】试题分析:列车于22:18开出指的是时刻,不是时间间隔,所以A错误;数学考试时间是2h,是时间间隔,所以B正确;数学考试9:40结束,是指时刻,所以C错误;新闻联播节目19:00开播,是指时刻,所以D错误;考点:考查了时间和时刻【名师点睛】时刻具有瞬时性的特点,是变化中的某一瞬间;时间间隔具有连续性的特点,与某一过程相对应.3.关于位移和路程的说法,正确的是()A.位移是矢量,路程是标量B.在直线运动中,位移的大小和路程一定相同C.在曲线运动中,位移的大小和路程可能相同D.位移方向总是质点运动方向一致【答案】A【解析】考点:考查了位移和路程【名师点睛】位移是矢量,位移的方向由初位置指向末位置,位移的大小不大于路程.路程是标量,是运动路径的长度.当质点做单向直线运动时,位移的大小一定等于路程,位移与路程是描述运动常用的物理量,它们之间大小关系是位移大小≤路程4.下列物理量中,全部是矢量的是()A.位移、时间、速度 B.速度、速率、加速度C.速度、速度变化、加速度 D.路程、时间、速率【答案】C【解析】试题分析:既有大小又有方向的物理量为矢量,如位移,速度,加速度,速度变化量等,只有大小没有方向的物理量为标量,如路程,质量,时间,速率等,故C正确;考点:考查了矢量和标量【名师点睛】关键是知道矢量和标量的区别,需要注意的是在有矢量牵涉的计算中一定要注意正负号,矢量的正负号不参与大小的比较,只表示方向,而标量的正负号只参与大小的比较,基础题5.某中学正在举行班级对抗赛,张明明同学是短跑运动员,在百米竞赛中,测得他在5 s末的速度为10.4 m/s,10 s末到达终点的速度为10.2 m/s,则他在全程中的平均速度为()A.10.4 m/s B.10.3 m/s C.10.2 m/s D.10m/s【答案】D【解析】试题分析:全程位移为100m ,跑完全程所用时间为10s ,所以全程的平均速度为10010/10x v m s t === 考点:考查了平均速度的计算【名师点睛】本题干扰项较多,要求我们要准确把握物理规律,知道平均速度即为位移与时间的比值,不要被干扰项所迷惑!6.一物体在t 秒内做匀变速直线运动,初速度为0v ,末速度为1v ,则物体在这段时间内的平均速度是 A .01v t v + B .10v t v - C .102v v - D .012v v + 【答案】D 【解析】考点:考查了平均速度的计算【名师点睛】匀变速直线运动的平均速度可以根据012v v v +=求解;也可以运用推论:匀变速直线运动的物体一段时间内的平均速度等于中点时刻的瞬时速度,只要由速度公式求出2t时刻的瞬时速度,即可求得.7.质点做直线运动,其位移随时间变化的函数关系是s = 4t + 2t 2(s 的单位为m ,t 的单位为s ),则它运动的初速度v 0和加速度a 分别是( ) A .v 0 =0,a=4m/s 2B .v 0=4m/s ,a=2m/s 2C .v 0=4m/s ,a=1m/s 2D .v 0=4m/s ,a=4m/s 2【答案】D 【解析】试题分析:对比公式2012s v t at =+,系数一一对应,可得204/4/v m s a m s ==,,故D 正确;考点:考查了匀变速直线运动位移时间公式【名师点睛】本题出题思路比较巧妙,考察了学生对运动学公式的熟练程度以及类比法的应用.8.质量都是m的物体在水平面上沿直线运动,下图中,A、B、C、D是它的运动图象,由图象可知下列说法中错误的是()A.图A表明物体做匀速运动 B.图B表明物体做匀速运动C.图C表明物体做匀减速直线运动 D.图D表明物体做匀加速直线运动【答案】B【解析】考点:考查了运动图像【名师点睛】位移-时间图象表示物体的位置随时间的变化,图象上的任意一点表示该时刻的位置,图象的斜率表示该时刻的速度,斜率的正负表示速度的方向.速度-时间图象中,某一点代表此时刻的瞬时速度,时间轴上方速度是正数,时间轴下方速度是负数;切线代表该位置的加速度,向右上方倾斜,加速度为正,向右下方倾斜加速度为负;图象与坐标轴围成面积代表位移,时间轴上方位移为正,时间轴下方位移为负.9.同一地点的两个物体从同一高度同时开始做自由落体运动。
2016-2017学年第一学期高一英语期中考试卷总分:150分;考试时间:150分钟;第一卷第一部分听力(共两节满分20分)第一节(共5题,每小题1分,满分5分)∙Where are they talking?∙In a library B. In a restaurant C. In a post office∙What did Alice do yesterday?∙She joined a birthday party. B. She played table tennis.∙She took part in a match.∙How will the woman go to the post office first?∙By subway. B. By taxi. C. By bus∙When does Lucy want to go to the zoo?∙On Friday. B. On Saturday. C. On Sunday∙What does the woman think of the boy’s diet?∙Healthy. B. Balanced. C. Unhealthy第二节(共15小题,每小题1分,共15分)听第六段材料,回答6、7 题。
∙How many rooms did Peter book?∙One B. Two C. Three∙What will Peter do next?∙Carry his luggage. B. Walk down stairs. C. Go to his room. 听第七段材料,回答8、9 题。
∙What does the man do probably?∙ A reporter B. A player C. A teacher∙What is the woman waiting to watch?∙ A football match. B. A tennis match. C. A basketball match. 听第八段材料,回答10 至12 题。
青海省平安县第一高级中学2016-2017学年高一上学期期中考试
物理试题
一、选择题(本题共12小题,每小题3分,共36分)
1.关于质点,下列说法正确的是( )
A .质量很小的物体都可以看作质点
B .体积很小的物体都可以看作质点
C .质量和体积都很小的物体才能看作质点
D .质量和体积都很大的物体有时也可以看作质点
2.以下的计时数据,指时间间隔的是( )
A .由北京开往深圳的列车于22:18开出
B .期中数学考试时间是2h
C .数学考试9:40结束
D .中央电视台每晚新闻联播节目19:00开播
3.关于位移和路程的说法,正确的是( )
A .位移是矢量,路程是标量
B .在直线运动中,位移的大小和路程一定相同
C .在曲线运动中,位移的大小和路程可能相同
D .位移方向总是质点运动方向一致
4.下列物理量中,全部是矢量的是( )
A .位移、时间、速度
B .速度、速率、加速度
C .速度、速度变化、加速度
D .路程、时间、速率
5.某中学正在举行班级对抗赛,张明明同学是短跑运动员,在百米竞赛中,测得他在5 s 末的速度为10.4 m/s ,10 s 末到达终点的速度为10.2 m/s ,则他在全程中的平均速度为 ( )
A .10.4 m/s
B .10.3 m/s
C .10.2 m/s
D .10m/s
6.一物体在t 秒内做匀变速直线运动,初速度为0v ,末速度为1v ,则物体在这段时间内的平均速度是
A .01v t v +
B .10v t v -
C .102v v -
D .012
v v + 7.质点做直线运动,其位移随时间变化的函数关系是s = 4t + 2t 2(s 的单位为m ,t 的单位为s ),则它运动的初速度v 0和加速度a 分别是( )
A .v 0 =0,a=4m/s 2
B .v 0=4m/s ,a=2m/s 2
C .v 0=4m/s ,a=1m/s 2
D .v 0=4m/s ,a=4m/s 2
8.质量都是m 的物体在水平面上沿直线运动,下图中,A 、B 、C 、D 是它的运动图象,由图象可知下列说法中错误的是 ( )
A.图A表明物体做匀速运动B.图B表明物体做匀速运动
C.图C表明物体做匀减速直线运动D.图D表明物体做匀加速直线运动
9.同一地点的两个物体从同一高度同时开始做自由落体运动。
那么()
A.质量较大的物体先到达地面
B.密度较大的物体先到达地面
C.体积较大的物体先到达地面
D.两个物体同时到达地面
10.若一质点从t =0开始由原点出发沿直线运动,其速度一时间图象如图所示,则该质点
A.t=2s时离原点最远
B.t=2s时回到原点
C.t=3s时的速度比t=1s时的速度小
D.t=4s时跟t=2s时相对原点的位移相等
11.如图是做直线运动的甲、乙两个物体的位移﹣时间图象,由图象可知()
A.乙开始运动时,两物体相距20m
B.在0~10s这段时间内,两物体间的距离逐渐增大
C.在10~25s这段时间内,两物体间的距离逐渐变小
D.两物体在10s时相距最远,在25s时相遇,且此时二者速度相同
12.一辆汽车从静止由甲地出发,沿平直公路开往乙地,汽车先作匀加速直线运动,接着作匀减速运动,
0~t和t0﹣3t0两段时间内有()
开到乙地刚好停止,其速度﹣时间图象如图所示,那么在
A.位移大小之比为1:2
B.加速度大小之比3:1
C.平均速度大小之比为1:1
D.平均速度大小之比为1:2
二、填空题(本题共两小题,每空2分,共18分)
13.电磁打点计时器的电源应是电源,通常的工作电压为V ,实验室使用我国民用电时,每隔s时间打一次点。
14.在“研究匀变速直线运动”的实验中,某同学选出了一条清晰的纸带,并取其中的A、B、C、D、E、F 七个点进行研究,这七个点和刻度尺标度的对照情况如图所示。
(1)由图可以知道,A、B两点的时间间隔是s,A点到D点的距离是cm ,D点到G点的距离是cm ;
(2)通过测量不难发现,(s BC-s AB)与(s CD-s BC)、与(s DE-s CD)、…基本相等。
这表明,在实验误差允许的范围之内,拖动纸带的小车做的是运动;
(3)经过合理的数据处理后,可以求得加速度的a= m/s2;
(4)还可以求出,打B点时小车的瞬时速度v B = m/s 。
三、计算题(本题共4小题,共46分)
15.汽车在平直的公路上以30m/s的速度匀速行驶。
开始刹车以后又以5m/s2的加速度做匀减速直线运动,求:
(1)从开始刹车计时,第8s末汽车的瞬时速度。
(2)从开始刹车计时,前7s内汽车的位移。
16.一质点做直线运动的v﹣t图象如图所示,试分析质点的运动情况,并求:
(1)第1s内的加速度;
(2)第2s末的加速度;
(3)0到4s内发生的位移。
17.一物体做自由落体运动,从开始运动时计时,求:
(1)第3s末的瞬时速度是多少?方向如何?
(2)前3s内的位移多大?
(3)前5s内的平均速度是多大?(g=10m/s2)
18.如图所示,在一条平直的公路上有等间距的五个点A、B、C、D、E,相邻两点间距离为L=30m。
一辆汽车在公路上做匀加速直线运动,经过这五个点,已知汽车(车头最前端)通过AB段和BC段所用时间分别为3s和2s。
试求:
(1)汽车的加速度a的大小和汽车最前端经过B点的速度V B的大小;
(2)汽车(车头最前端)经过E点时刻的速度V E的大小。
:。