陕西省单招数学真题试卷
2022年陕西省普通高校职业教育单独招生考试数学甲A
2022年陕西省普通高校职业教育单独招生考试甲A数学一、选择题1.设集合S={−3,−1,1,2},集合T={−2,1,2},则S∩T=A.{1}B.{2}C.{−2,1,2}D.{1,2}的定义域为2.函数f(x)=1x−2A.(−∞,2]B.(−∞,2)C.(−∞,2)∪(2,+∞)D.R3.函数y=a x+3(a>0且a≠1)的图像恒过定点A.(1,0)B.(0,4)C.(4,0)D.(3,3)4.函数f(x)=2x+2x的零点所在的区间为A.(0,1)B.(−1,0)C.(1,2)D.(2,3)5.若直线x−3y+1=0与x+ay−3=0互相垂直,则实数a的值为A.−3B.−13C.13D.3,则A的对立事件的概率为6.若事件A的概率P(A)=13A.13B.23C.12D.17.已知平面向量a⃗=(λ,2),b⃗⃗=(3,−3),且a⃗⊥b⃗⃗,则实数λ的值为A.2B.1C.0D.−38.设等差数列{a n}的前n项和为S n,若a7=3,则S13的值为A.28B.39C.56D.117二、填空题9.已知x>0,函数f(x)=x+4x的最小值为10.在ΔABC中,若BC=2,AC=1,A=300,则sin B=11.将函数y=sin(2x+π6)的图像向右平移π6个单位后,所得图像对应的函数解析式为12.已知cosθ=−35,则cos2θ的值为13.底面半径长为2,母线长为3的圆柱的体积为三、解答题14.若二次函数y=ax2+bx+c的图像的顶点是(2,1)且经过点(1,−2),求此二次函数解析式15.在等差数列{a n}中,已知a2,a5是一元二次方程x2−19x+70=0的两个根(1)求a2,a3(2)求{a n}的通项公式16.设圆的方程为x2+y2−4x−5=0(1)求该圆的圆心坐标及半径(2)若此圆的一条弦AB的中点为P(3,1),求直线AB的方程。
2021年陕西省西安市普通高校高职单招数学测试题(含答案)
2021年陕西省西安市普通高校高职单招数学测试题(含答案)学校:________ 班级:________ 姓名:________ 考号:________一、单选题(20题)1.A.3B.8C.2.函数在(-,3)上单调递增,则a的取值范围是()A.a≥6B.a≤6C.a>6D.-83.下列函数中是奇函数,且在(-∞,0)减函数的是()A.y=B.y=1/xC.y==x2D.y=x34.等差数列{a n}中,若a2+a4+a9+a11=32,则a6+a7=()A.9B.12C.15D.165.圆(x+1)2+y2=2的圆心到直线y=x+3的距离为A.1B.2C.D.26.下列双曲线中,渐近线方程为y=±2x的是( )A.x2-y2/4=1B.x2/4-y2=1C.x2-y2/2=1D.x2/2-y2=17.已知平面向量a=(1,3),b(-1,1),则ab=A.(0,4)B.(-1,3)C.0D.28.设一直线过点(2,3)且它在坐标轴上的截距和为10,则直线方程为()A.B.C.D.9.袋中有大小相同的三个白球和两个黑球,从中任取两个球,两球同色的概率为()A.1/5B.2/5C.3/5D.4/510.直线L过(-1,2)且与直线2x-3y+5=0垂直,则L的方程是()A.3x+2y-1=0B.3x+2y+7=0C.2x-3y+6=0D.2x-3y+8=011.已知拋物线方程为y2=8x,则它的焦点到准线的距离是()A.8B.4C.2D.612.垂直于同一个平面的两个平面()A.互相垂直B.互相平行C.相交D.前三种情况都有可能13.直线以互相平行的一个充分条件为()A.以都平行于同一个平面B.与同一平面所成角相等C.平行于所在平面D.都垂直于同一平面14.5人排成一排,甲必须在乙之后的排法是()A.120B.60C.24D.1215.下列结论中,正确的是A.{0}是空集B.C.D.16.A.B.C.D.17.已知点A(1,-1),B(-1,1),则向量为( )A.(1,-1)B.(-1,1)C.(0,0)D.(-2,2)18.已知a=(1,2),b=(x,4)且A×b=10,则|a-b|=()A.-10B.10C.D.19.以点P(2,0),Q(0,4)为直径的两个端点的圆的方程是()A.(x-l)2+(y-2)2=5B.(x-1)2+y2=5C.(x+1)2+y2=25D.(x+1)2+y=520.在△ABC,A=60°,B=75°,a=10,则c=()A.B.C.D.二、填空题(20题)21.为椭圆的焦点,P为椭圆上任一点,则的周长是_____.22.某程序框图如下图所示,该程序运行后输出的a的最大值为______.23.的值是。
2021年陕西省榆林市普通高校高职单招数学测试题(含答案)
2021年陕西省榆林市普通高校高职单招数学测试题(含答案)学校:________ 班级:________ 姓名:________ 考号:________一、单选题(20题)1.若a>b.则下列各式正确的是A.-a>-bB.C.D.2.A.B.C.3.A.第一象限角B.第二象限角C.第三象限角D.第四象限角4.A.6B.7C.8D.95.A.B.C.D.6.若集合M={3,1,a-1},N = {-2,a2},N为M的真子集,则a的值是( )A.-1B.1C.0D.7.设平面向量a(3,5),b(-2,1),则a-2b的坐标是()A.(7,3)B.(-7,-3)C.(-7,3)D.(7,-3)8.(1 -x)4的展开式中,x2的系数是( )A.6B.-6C.4D.-49.已知点A(-1,2),B(3,4),若,则向量a=()A.(-2,-1)B.(1,3)C.(4,2)D.(2,1)10.已知函数f(x)=x2-x+1,则f(1)的值等于()A.-3B.-1C.1D.211.已知向量a=(1,2),b=(3,1),则b-a=()A.(-2,1)B.(2,-1)C.(2,0)D.(4,3)12.A.-1B.-4C.4D.213.已知sin2α<0,且cosa>0,则α的终边在()A.第一象限B.第二象限C.第三象限D.第四象限14.已知等差数列{a n}满足a2+a4=4,a3+a5=它的前10项的和S n()A.138B.135C.95D.2315.6人站成一排,甲乙两人之间必须有2人,不同的站法有()A.144种B.72种C.96种D.84种16.下列结论中,正确的是A.{0}是空集B.C.D.17.A.B.C.D.18.若f(x)=ax2+bx(ab≠0),且f(2) = f(3),则f(5)等于( )A.1B.-1C.0D.219.在2,0,1,5这组数据中,随机取出三个不同的数,则数字2是取出的三个不同数的中位数的概率为()A.3/4B.5/8C.1/2D.1/420.设集合={1,2,3,4,5,6,},M={1,3,5},则C U M=()A.{2,4,6}B.{1.3,5}C.{1,2,4}D.U二、填空题(20题)21.22.在P(a,3)到直线4x-3y+1=0的距离是4,则a=_____.23.log216 + cosπ + 271/3= 。
2022年陕西省西安市普通高校对口单招数学自考测试卷(含答案)
2022年陕西省西安市普通高校对口单招数学自考测试卷(含答案)一、单选题(10题)1.函数和在同一直角坐标系内的图像可以是()A.B.C.D.2.设a,b为正实数,则“a>b>1”是“㏒2a>㏒2b>0的()A.充要条件B.充分不必要条件C.必要不充分条件D.既不充分也不必要条3.若函数y=log2(x+a)的反函数的图像经过点P(-1,0),则a的值为()A.-2B.2C.D.4.下列函数中是奇函数的是A.y=x+3B.y=x2+1C.y=x3D.y=x3+15.三角函数y=sinx2的最小正周期是( )A.πB.0.5πC.2πD.4π6.设集合A={x|1≤x≤5},Z为整数集,则集合A∩Z中元素的个数是()A.6B.5C.4D.37.直线L过(-1,2)且与直线2x-3y+5=0垂直,则L的方程是()A.3x+2y-1=0B.3x+2y+7=0C.2x-3y+6=0D.2x-3y+8=08.若x2-ax+b<0的解集为(1,2),则a+b=( )A.5B.-5C.1D.-19.A.1B.2C.3D.410.若实数a,b满足a+b=2,则3a+3b的最小值是()A.18B.6C.D.二、填空题(10题)11.集合A={1,2,3}的子集的个数是。
12.13.过点(1,-1),且与直线3x-2y+1=0垂直的直线方程为。
14.若一个球的体积为则它的表面积为______.15.设lgx=a,则lg(1000x)= 。
16.等比数列中,a2=3,a6=6,则a4=_____.17.已知函数则f(f⑶)=_____.18.若事件A与事件ā互为对立事件,且P(ā)=P(A),则P(ā) =。
19.如图是一个算法流程图,则输出S的值是____.20.三、计算题(5题)21.求焦点x轴上,实半轴长为4,且离心率为3/2的双曲线方程.22.解不等式4<|1-3x|<723.某小组有6名男生与4名女生,任选3个人去参观某展览,求(1) 3个人都是男生的概率;(2) 至少有两个男生的概率.24.从含有2件次品的7件产品中,任取2件产品,求以下事件的概率.(1)恰有2件次品的概率P1;(2)恰有1件次品的概率P2 .25.已知函数y=cos2x + 3sin2x,x ∈R求:(1) 函数的值域;(2) 函数的最小正周期。
2023年陕西省单招考试真题数学
2023年陕西省单招考试真题数学一、单项选择 (本题共30个小题,每小题2分,共60分)1.已知集合,则下列关系表示错误的是() [单选题] * A.0ϵAB.{1}ϵA(正确答案)C.∅⊆AD.{0,1}⊆A2.下列对象能组成集合的是() [单选题] *A.最大的正数B.最小的整数C.平方等于1的数(正确答案)D.最接近1的数3.集合且用区间表示出来() [单选题] * A.(0,2)B.(0,+∞)C.(0,2)∪(2,+∞)(正确答案)D.(2,+∞)4.“两个三角形的面积相等”是“两个三角形全等”的() [单选题] * A.充分不必要条件B.必要不充分条件(正确答案)C.充要条件D.既不充分也不必要条件5.函数的图像是() [单选题] * A.一条直线B.一条线段C.一条射线D.三个点(正确答案)6.已知,则() [单选题] * A.1B.3C.5(正确答案)D.87.化简的结果是() [单选题] *A. a³B. a⁶C. a⁹(正确答案)D. a²8.已知函数y=loga x的图像过点(4,2),则a=() [单选题] *A. 3B. 2(正确答案)C. -3D. -29.弧度为3的角为() [单选题] *A.第一象限角B.第二象限角(正确答案)C.第三象限角D. 第四象限角10. =() [单选题] *A. 1B.(正确答案)C. 2D. -111.若实数a,b,满足条件a>b,则下列不等式一定成立的是() [单选题] * A.-2a>-2bB.-a>-bC.ac>bcD.a+1>b+1(正确答案)12.函数的定义域为() [单选题] *A.(-∞,4)B.[4,+∞)C.(-∞,4]D.(-∞,1)∪(1,4](正确答案)13.若sin<0且tan>0则角所在的象限是() [单选题] *A.第一象限B.第二象限C.第三象限(正确答案)D.第四象限14.在下列区间中,函数y=sinx单调递增的是() [单选题] * A.[0 ,π/2](正确答案)B.[π/2,π]C.[π,3π/2]D.[0,π]15.下列正确的是() [单选题] *A.y=sinx和y=cosx都是偶函数B.y=sinx和y=cosx都是周期函数(正确答案)C.y=sinx和y=cosx在[0 ,π/2]都是增函数D.y=sinx和y=cosx在x =2kπ (k∈Z)时有最大值116.集合的子集的个数为() [单选题] *A.8(正确答案)B.7C.6D.917. 设A={x|-2<x≤2},B={x|1<x<3},A∪B=() [单选题] *A.{x|-2<x<3}(正确答案)B.B.{x|-2<x≤1}C.{x|1<x≤2}D.{x|2<x<3}18.已知集合A={3,4,5}, B={1,3,5,7} , 则() [单选题] *A.{3,4}B.{3,5}(正确答案)C. {3,4,5}D ∅19.集合A={0,1,2,3}的非空真子集的个数为() [单选题] *A.7B.8C.14(正确答案)D.1520.集合的区间表示是(). [单选题] *A. (1,+∞)B. [-1,+∞)C. (-∞,-1)D.(-∞,-1](正确答案)21.设集合A=(-∞,5)则集合A在R上的补集为(). [单选题] *A. (-∞,5)B. (-5,+∞)C. (5,+∞)D.[5,+∞)(正确答案)22.如果,那么a的范围是(). [单选题] *A. (-2,+∞]B. (2,+∞]C. [-1,+∞]D.[2,+∞)(正确答案)23.不等式x(x+2)≤0的解集为() [单选题] *A.{x|x≥0}B.{x|x≤-2}C. {x|-2≤x≤0}(正确答案)D. {x|0≤x或x≤-2}24.点(-2,3)关于x轴对称点坐标是() [单选题] *A. (2,3)B. (-2,-3)(正确答案)C. (2,-3)D. (-2,3)25.下列函数中既是奇函数又是增函数的是() [单选题] *A. y=3x²B. y=1/xC. y=x+1D.y=x³(正确答案)26.一次函数 y = 2x + 1的图像不经过的象限是() [单选题] *A.第一B.第二C.第三D.第四(正确答案)27.下列各点中,在函数y=x-2图象上的是() [单选题] *A.(0,2)B.(-1,-2)C.(2,0)(正确答案)D.(-1,2)28.sin30°=() [单选题] *A.0B.1C.1/2(正确答案)29.1rad约等于() [单选题] *A.57.3°(正确答案)B.60°C.50°D.53.7°30.190°是() [单选题] *A.第一象限角B.第二象限角C.第三象限角(正确答案)D.第四象限角二、判断题(共20题,每题2分,共40分)31.函数y=x²是偶函数 [判断题] *对(正确答案)错32.我校年轻的教师全体可以构成集合 [判断题] *对错(正确答案)33.0是自然数 [判断题] *对(正确答案)34.空集是任何集合的子集 [判断题] *对(正确答案)错35.若a-b>0,则a>b [判断题] *对(正确答案)错36.单位向量都相等 [判断题] *对错(正确答案)37.不等式的两边加同一个数,不等号的方向不变 [判断题] *对(正确答案)错38.函数的两要素是定义域和对应法则 [判断题] *对(正确答案)错39.分段函数是两个函数 [判断题] *对错(正确答案)40.sin30°=1/2 [判断题] *对(正确答案)错41.120°是第一象限角 [判断题] *对错(正确答案)42.半径为1的圆叫做单位圆 [判断题] *对(正确答案)错43.正弦函数是周期函数 [判断题] *对(正确答案)错44.余弦函数是奇函数 [判断题] *对错(正确答案)45. Q是自然数集 [判断题] *对错(正确答案)46.我国著名的运动员可以组成一个集合 [判断题] *对错(正确答案)47.函数f(x)=x²是一个奇函数 [判断题] *对错(正确答案)48.函数的定义域是指函数值的取值范围 [判断题] *对错(正确答案)49.第四象限角一定是负角 [判断题] *对错(正确答案)50.钝角一定是第二象限角(对)dea of the passage. [判断题] *对(正确答案)错。
陕西省单招考试真题数学
1、在直角坐标系中,点A的横坐标是3,纵坐标的绝对值是4,则点A可能位于哪个象限?
A. 第一象限
B. 第二象限
C. 第三象限
D. 第一或第四象限
(答案:D)
2、若一个等差数列的首项为5,公差为2,那么该数列的第6项是多少?
A. 11
B. 13
C. 15
D. 17
(答案:C)
3、已知一个圆的半径为r,若其面积增加了一倍,则新圆的半径为?
A. r/2
B. r
C. √2r
D. 2r
(答案:C)
4、一个直角三角形的两条直角边长度分别为3和4,那么其斜边的长度为?
A. 3
B. 4
C. 5
D. 6
(答案:C)
5、若一个正方形的对角线长为10,则其面积为?
A. 25
B. 50
C. 100
D. 200
(答案:B)
6、已知一组数据的平均数为10,若加入一个新数据15,则新数据的平均数变为?
A. 10.5
B. 11
C. 11.5
D. 无法确定
(答案:D)
7、一个长方体的长、宽、高分别为3、4、5,其体积为?
A. 30
B. 45
C. 60
D. 75
(答案:C)
8、若一个圆的周长是20π,那么该圆的直径是?
A. 5
B. 10
C. 15
D. 20
(答案:D)。
2023年陕西省咸阳市普通高校对口单招数学自考真题(含答案)
2023年陕西省咸阳市普通高校对口单招数学自考真题(含答案)一、单选题(10题)1.下列立体几何中关于线面的四个命题正确的有()(1)垂直与同一平面的两个平面平行(2)若异面直线a,b不垂直,则过a的任何一个平面与b都不垂直(3)垂直与同一平面的两条直线一定平行(4)垂直于同一直线两个平面一定平行A.1个B.2个C.3个D.4个2.椭圆的焦点坐标是( )A.(,0)B.(±7,0)C.(0,±7)D.(0,)3.已知a<0,0<b<1,则下列结论正确的是()A.a>abB.a>ab2C.ab<ab2D.ab>ab24.圆心为(1,1)且过原点的圆的方程是()A.(x-l)2+(y-1)2=1B.(x+1)2+(y+1)2=1C.(x+1)2+(y+1)2=2D.(x-1)2+(y-1)2=25.若函数f(x)=x2+ax+3在(-∞,1]上单调递减,则实数a的取值范围是()A.(-∞,1]B.[―1,+∞)C.(―∞,-2]D.(-2,+∞)6.设A-B={x|x∈A且x B},若M={4,5,6,7,8},N={7,8,9,10}则M-N等于()A.{4,5,6,7,8,9,10}B.{7,8}C.{4,5,6,9,10}D.{4,5,6}7.已知点A(1,-3)B(-1,3),则直线AB的斜率是()A.B.-3C.D.38.下列命题是真命题的是A.B.C.D.9.A.3个B.2个C.1个D.0个10.若lgx<1,则x的取值范围是()A.x>0B.x<10C.x>10D.0<x<10二、填空题(10题)11.已知△ABC中,∠A,∠B,∠C所对边为a,b,c,C=30°,a=c=2.则b=____.12.设平面向量a=(2,sinα),b=(cosα,1/6),且a//b,则sin2α的值是_____.14.15.椭圆9x2+16y2=144的短轴长等于。
16.数列{a n}满足a n+1=1/1-a n,a2=2,则a1=_____.17.若f(X) =,则f(2)= 。
2021年陕西省西安市普通高校对口单招数学自考测试卷(含答案)
2021年陕西省西安市普通高校对口单招数学自考测试卷(含答案)班级:________ 姓名:________ 考号:________一、单选题(20题)1.若圆C1:x2+y2=1与圆C2:x2+y2-6x-8y+m=0外切,则m=()A.21B.19C.9D.-112.已知圆C与直线x-y=0及x-y-4=0都相切,圆心在直线x+y=0上,则圆C的方程为()A.(x+1)2+(y-1)2=2B.(x-1)2+(y+1)2=2C.(x-1)2+(y-1)2=2D.(x+1)2+(y+1)2=23.“a,b,c都不等于0”的否定是A.a,b,c都等于0B.a,b,c不都等于0C.a,b,c中至少有一个不等于0D.a,b,c 中至少有一个等于04.在正方体ABCD-A1B1C1D1中,二面角D1-AB-D的大小是( )A.30°B.60°C.45°D.90°5.已知互为反函数,则k和b的值分别是()A.2,B.2,C.-2,D.-2,6.设集合A={1,3,5,7},B={x|2≤x≤5},则A∩B=()A.{1,3}B.{3,5}C.{5,7}D.{1,7}7.设a=1/2,b=5-1/2则()A.a>bB.a=bC.a<bD.不能确定8.已知函数f(x)=x2-x+1,则f(1)的值等于()A.-3B.-1C.1D.29.A.7.5B.C.610.已知{a n}是等差数列,a1+a7=-2,a3=2,则{a n}的公差d=( )A.-1B.-2C.-3D.-411.已知a是函数f(x)=x3-12x的极小值点,则a=()A.-4B.-2C.4D.212.下列双曲线中,渐近线方程为y=±2x的是( )A.x2-y2/4=1B.x2/4-y2=1C.x2-y2/2=1D.x2/2-y2=113.若a0.6<a<a0.4,则a的取值范围为()</aA.a>1B.0<a<1C.a>0D.无法确定14.A.-1B.0C.2D.115.5人排成一排,甲必须在乙之后的排法是()A.120B.60C.24D.1216.公比为2的等比数列{an }的各项都是正数,且a3a11=16,则a5=()A.1B.2C.4D.817.直线以互相平行的一个充分条件为()A.以都平行于同一个平面B.与同一平面所成角相等C.平行于所在平面D.都垂直于同一平面18.等差数列{an }中,若a2+a4+a9+a11=32,则a6+a7=()A.9B.12C.15D.1619.设集合U={1,2,3,4,5,6},A={1,3,5},B={3,4,5},则Cu(A∪B)=( )A.{2,6}B.{3,6}C.{1,3,4,5}D.{1,2,4,6}20.x2-3x-4<0的等价命题是()A.x<-1或x>4B.-1<x<4C.x<-4或x>1D.-4<x<1二、填空题(10题)21.22.圆心在直线2x-y-7=0上的圆C与y轴交于两点A(0,-4),B(0,一2),则圆C的方程为___________.23.(x+2)6的展开式中x3的系数为。
2021年陕西省西安市普通高校高职单招数学自考测试卷(含答案)
2021年陕西省西安市普通高校高职单招数学自考测试卷(含答案)学校:________ 班级:________ 姓名:________ 考号:________一、单选题(20题)1.执行如图的程序框图,那么输出S的值是( )A.-1B.1/2C.2D.12.若f(x)=4log2x+2,则f⑵+f⑷+f(8)=()A.12B.24C.30D.483.已知平面向量a=(1,3),b(-1,1),则ab=A.(0,4)B.(-1,3)C.0D.24.随着互联网的普及,网上购物已经逐渐成为消费时尚,为了解消费者对网上购物的满意情况,某公司随机对4500名网上购物消费者进行了调查(每名消费者限选一种情况回答),统计结果如表:根据表中数据,估计在网上购物的消费者群体中对网上购物“比较满意”或“满意”的概率是()A.7/15B.2/5C.11/15D.13/155.已知a<0,0<b<1,则下列结论正确的是()A.a>abB.a>ab2C.ab<ab2D.ab>ab26.A.B.C.D.7.从200个零件中抽测了其中40个零件的长度,下列说法正确的是()A.总体是200个零件B.个体是每一个零件C.样本是40个零件D.总体是200个零件的长度8.过点M(2,1)的直线与x轴交与P点,与y轴交与交与Q点,且|MP|=|MQ|,则此直线方程为()A.x-2y+3=0B.2x-y-3=0C.2x+y-5=0D.x+2y-4=09.若a=(1/2)1/3,b=㏒1/32,c=㏒1/33,则a,b,c的大小关系是()A.b<a<cB.b<c<aC.a<b<cD.c<b<a10.已知向量a=(l,-l),6=(2,x).若A×b=1,则x=()A.-1B.-1/2C.1/2D.111.等比数列{a n}中,若a2 =10, a3=20,则S5等于( )A.165B.160C.155D.15012.△ABC的内角A,B,C的对边分别为a,b,c已知a=,c=2,cosA=2/3,则b=()A.B.C.2D.313.5人站成一排,甲、乙两人必须站两端的排法种数是()A.6B.12C.24D.12014.函数的定义域( )A.[3,6]B.[-9,1]C.(-∞,3]∪[6,+∞)D.(-∞,+∞)15.在等差数列{a n}中,a5=9,则S9等于( )A.95B.81C.64D.4516.已知全集U={0,1,2,3,4},集合A={1,2,3},B={2,4},则为()A.{1,2,4}B.{2,3,4}C.{0,2,4}D.{0,2,3,4}17.A.{1,0}B.{1,2}C.{1}D.{-1,1,0}18.已知互为反函数,则k和b的值分别是()A.2,B.2,C.-2,D.-2,19.已知集合M={0,1,2,3},N={1,3,4},那么M∩N等于()A.{0}B.{0,1}C.{1,3}D.{0,1,2,3,4}20.A.(1,2)B.(3,4)C.(0,1)D.(5,6)二、填空题(20题)21.等差数列{a n}中,已知a4=-4,a8=4,则a12=______.22.23.函数f(x)=sin2x-cos2x的最小正周期是_____.24.已知_____.25.26.27.设集合,则AB=_____.28.Ig0.01+log216=______.29.30.在△ABC中,C=60°,AB=,BC=,那么A=____.31.执行如图所示的流程图,则输出的k的值为_______.32.某田径队有男运动员30人,女运动员10人.用分层抽样的方法从中抽出一个容量为20的样本,则抽出的女运动员有______人.33.已知点A(5,-3)B(1,5),则点P的坐标是_____.34.cos45°cos15°+sin45°sin15°= 。
2021年陕西省安康市普通高校高职单招数学测试题(含答案)
2021年陕西省安康市普通高校高职单招数学测试题(含答案)学校:________ 班级:________ 姓名:________ 考号:________一、单选题(20题)1.若f(x)=4log2x+2,则f⑵+f⑷+f(8)=()A.12B.24C.30D.482.“x=1”是“x2-1=0”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件3.已知等差数列中,前15项的和为50,则a8等于()A.6B.C.12D.4.已知过点A(-2,m)和B(m,4)的直线与直线2x+y-1=0平行,则m的值为()A.0B.-8C.2D.105.已知椭圆x2/25+y2/m2=1(m>0)的左焦点为F1(-4,0)则m=()A.2B.3C.4D.96.A.B.C.D.7.已知,则点P(sina,tana)所在的象限是()A.第一象限B.第二象限C.第三象限D.第四象限8.若不等式|ax+2|<6的解集是{x|-1<x<2},则实数a等于()A.8B.2C.-4D.-89.根据如图所示的框图,当输入z为6时,输出的y=( )A.1B.2C.5D.1010.设是l,m两条不同直线,α,β是两个不同平面,则下列命题中正确的是()A.若l//α,α∩β=m,则l//mB.若l//α,m⊥l,则m⊥αC.若l//α,m//α,则l//mD.若l⊥α,l///β则a⊥β11.A.B.C.12.A.B.{-1}C.{0}D.{1}13.A.B.C.D.14.A.(-2.3)B.(2,3]C.[2,3)D.[-2,3]15.若函数y=log2(x+a)的反函数的图像经过点P(-1,0),则a的值为()A.-2B.2C.D.16.A.(1,2)B.(3,4)C.(0,1)D.(5,6)17.在等差数列{a n}中,a1=2,a3+a5=10,则a7=()A.5B.8C.10D.1418.A.B.C.D.19.为A.23B.24C.25D.2620.A.b>a>0B.b<a<0C.a>b>0D.a<b<0二、填空题(20题)21.若ABC的内角A满足sin2A=则sinA+cosA=_____.22.按如图所示的流程图运算,则输出的S=_____.23.不等式的解集为_____.24.执行如图所示的流程图,则输出的k的值为_______.25.26.已知拋物线的顶点为原点,焦点在y轴上,拋物线上的点M(m,-2)到焦点的距离为4,则m的值为_____.27.在ABC中,A=45°,b=4,c=,那么a=_____.28.已知向量a=(1,-1),b(2,x).若A×b=1,则x=______.29.30.31.32.双曲线x2/4-y2/3=1的离心率为___.33.34.35.若事件A与事件ā互为对立事件,且P(ā)=P(A),则P(ā) =。
2022年陕西省西安市普通高校对口单招数学月考卷(含答案)
2022年陕西省西安市普通高校对口单招数学月考卷(含答案)学校:________ 班级:________ 姓名:________ 考号:________一、单选题(20题)1.计算sin75°cos15°-cos75°sin15°的值等于()A.0B.1/2C.D.2.A.B.C.D.3.已知角α的终边经过点(-4,3),则cosα()A.4/5B.3/5C.-3/5D.-4/54.下列函数为偶函数的是A.B.y=7xC.y=2x+15.某商场以每件30元的价格购进一种商品,试销中发现,这种商品每天的销量m(件)与x售价(元)满足一次函数:m=162-3x,若要每天获得最大的销售利润,每件商品的售价应定为()A.30元B.42元C.54元D.越高越好6.A.B.C.7.己知向量a=(3,-2),b=(-1,1),则3a+2b等于( )A.(-7,4)B.(7,4)C.(-7,-4)D.(7,-4)8.过点A(1,0),B(0,1)直线方程为()A.x+y-1=0B.x-y-1=0C.x+y+1=0D.x-y+1=09.若等比数列{a n}满足,a1+a3=20,a2+a4=40,则公比q=()A.1B.2C.-2D.410.在正方体ABCD-A1B1C1D1中,二面角D1-AB-D的大小是( )A.30°B.60°C.45°D.90°11.点A(a,5)到直线如4x-3y=3的距离不小于6时,则a的取值为()A.(-3,2)B.(-3,12)C.(-,-3][12,+)D.(-,-3)(12,+)12.若集合A={1,2,3},B={1,3,4},则A∩B的子集的个数为()A.2B.3C.4D.1613.若事件A与事件ā互为对立事件,则P(A) +P(ā)等于( )A.1/4B.1/3C.1/2D.114.函数y =的定义域是( )A.(-2,2)B.[-2,2)C.(-2,2]D.[-2,2]15.“a=0”是“a2+b2=0”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件16.设S n为等差数列{a n}的前n项和,S8=4a3,a7=-2,则a9等于()A.-6B.-4C.-2D.217.A.B.C.D.18.过点A(-1,0),B(0,-1)直线方程为()A.x+y-1=0B.x-y-1=0C.x+y+l=0D.x-y+l=019.△ABC的内角A,B,C的对边分别为a,b,c已知a=,c=2,cosA=2/3,则b=()A.B.C.2D.320.若sinα与cosα同号,则α属于( )A.第一象限角B.第二象限角C.第一、二象限角D.第一、三象限角二、填空题(20题)21.方程扩4x-3×2x-4=0的根为______.22.某校有老师200名,男学生1200名,女学生1000名,现用分层抽样的方法从所有师生中抽取一个容量为240的样本,则从女生中抽取的人数为______.23.以点(1,2)为圆心,2为半径的圆的方程为_______.24.若直线的斜率k=1,且过点(0,1),则直线的方程为。
2021年陕西省汉中市普通高校高职单招数学测试题(含答案)
2021年陕西省汉中市普通高校高职单招数学测试题(含答案)学校:________ 班级:________ 姓名:________ 考号:________一、单选题(20题)1.已知A={x|x+1>0},B{-2,-1,0,1},则(C R A)∩B=( )A.{-2,-1}B.{-2}C.{-1,0,1}D.{0,1}2.设a,b为实数,则a2=b2的充要条件是()A.a=bB.a=-bC.a2=b2D.|a|=|b|3.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.100B.150C.200D.2504.下列函数为偶函数的是A.B.C.5.下列四组函数中表示同一函数的是( )A.y=x与y=B.y=2lnx与y=lnx2C.y=sinx与y=cos()D.y=cos(2π - x)与y=sin(π - x)6.下列句子不是命题的是A.B.C.D.7.直线x+y+1=0的倾斜角为()A.B.C.D.-18.下列函数是奇函数且在区间(0, 1)内是单调递增的是( )A.y = xB.y = lgxC.y = e xD.y = cosx9.两个三角形全等是两个三角形面积相等的()A.充分条件B.必要条件C.充要条件D.既不充分也不必要条件10.某人从一鱼池中捕得120条鱼,做了记号之后,再放回池中,经过一定的时间后,再从该鱼池中捕得100条鱼,结果发现有记号的鱼为10条(假定鱼池中鱼的数量既不减少,也不增加),则鱼池中大约有鱼()A.120条B.1000条C.130条D.1200条11.函数y=-(x-2)|x|的递增区间是()A.[0,1]B.(-∞,l)C.(l,+∞)D.[0,1)和(2,+∞)12.若实数a,b满足a+b=2,则3a+3b的最小值是()A.18B.6C.D.13.下列函数中是偶函数的是()A.y=x|x|B.y=sinx|x|C.y=x2+1D.y=xsinx+cosx14.圆x2+y2-2x-8y+13=0的圆心到直线ax+y-1=0的距离为1,则a=()A.-4/3B.-3/4C.D.215.设S n为等差数列{a n}的前n项和,S8=4a3,a7=-2,则a9等于()A.-6B.-4C.-2D.216.设集合M={1,2,4,5,6},集合N={2,4,6},则M∩N=()A.{2,4,5,6}B.{4,5,6}C.{1,2,3,4,5,6}D.{2,4,6}17.已知一元二次不等式ax2+bx+1>0的解是<x<,那么()A.B.C.D.18.A.B.C.19.设集合,,则()A.A,B的都是有限集B.A,B的都是无限集C.A是有限集,B是无限集D.B是有限集,A是无限集20.A.B.C.二、填空题(20题)21.己知等比数列2,4,8,16,…,则2048是它的第()项。
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陕西省单招数学真题试卷-CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN2017年陕西交通职业技术学院高职单招考试模拟试题三英语第一部分:英语知识运用(共两节,满分45分)第一节:单项填空(共15小题;每小题1分,满分15分)1.Give me a chance, ________ I’ll give you a wonderful surprise.A.ifB. orC. andD. while2.---Ok, I’ll fix your computer right now. ---Oh, take your time.__________.A.I can’t stand itB. I’m in no hurryC. That’s a great ideaD. It’s not mycup of tea3.Wind is now the world’s fastest growing ________ of power.A.sourceB. senseC. resultD. root4._______ you start eating in a healthier way, weight control willbecome much easier.A. unlessB. AlthoughC. BeforeD. Once5. Anxiously, she took the dress out of the package and tried it on, only _________ id didn’t fitA. to findB. foundC. findingD. having found6. _______ the school, the village has a clinic, which was also built with government support.A. In reply toB. In addition toC. In charge ofD. In place of7. Clearly and thoughtfully________, the book inspires confidence in students who wish to seek their own answers.A. writingB. to writeC. writtenD. being written8. Life the like ________ ocean; Only ________strong-willed can reach the other shore.A. an; theB. the; aC. the ;/D. / ; a9. My parents always _______ great importance to my getting a good education.A. haveB. attachC. acceptD. pay10. ---How long have you been learning English ----_________! Your English is so good.A. You can’t be seriousB. You got itC. I couldn’t agree moreD. I’m stuck11. We won’t start the work until all the preparations __________.A. are being madeB. will be madeC. have been madeD. had been made12. English is a language shared by several diverse cultures, _________ uses it differently.A. all of whichB. each of whichC. all of themD. each of them13. The two countries are going to meet to _______ some barriers to trade between them.A. make upB. use upC. turn downD. break down14. I think _______ impresses me about his painting is the colours he uses.A. whatB. thatC. whichD. who15. ________ the morning train, he would not have been late for the meeting.A. Did he catchB. should be catchC. has he caughtD. Had he caught第二节:完形填空(共20小题,每小题1.5分,满分30分)阅读下面短文,掌握其大意,然后从16-35各题所给A,B,C,D的四个选项中,选出最佳选项。
One night, when I was eight , my mother gently asked me a question I would never forget. “Sweetie, my company wants to 16 me but needs me to work in Brazil. This is like your teacher telling that you’ve done 17 and allowing you to skip a grade(跳级), but you’ll have to 18 your friends. Would you say yes to your teacher?” She gave me a hug and asked me to think about it. I was puzzled. The question kept me 19 for the rest of the night I had said “yes” but for the first time, I realized the 20 decisions adults had to make.For almost four years, my mother would call us from Brazil every day. Every evening I’d 21 wait for the phone to ring and then tell her every detail of my day. A phone call, however, could never replace her 22 and it was difficult not to feel lonely at times.During my fourth-grade Christmas break, we flew to Rio to visit her. Looking at her large 23 apartment, I became 24 how lonely my mother must have been in Brazil herself. It was then 25 I started to appreciate the tough choices she had to make on 26 family and work. 27 difficult decisions, she used to tell me, you wouldn’t know whether you make the right choice, but you could always make the best out of the situation, with passion and a 28 attitude.Back home , I 29 myself that what my mother could do, I could, too. If she 30 to live in Rio all by herself, I, too, could learn to be 31 . I learn how to take care of myself and set high but achievable 32.My mother is now back with us. But I will never forget what the 33 has really taught me. Sacrifices 34 in the end. The separation between us has proved to be 35 for me.16. A. attract B. promote C. surprise D. praise17. A. little B. much C. well D. wrong18. A. leave B. refuse C. contact D. forgive19. A. explaining B. sleeping C. wondering D. regretting20. A. poor B. timely C. final D. tough21. A. eagerly B. politely C. nervously D. curiously22. A. patience B. presence C. intelligence D. Influence23. A. Comfortable B. Expensive C. Empty D. Modern24. A. Interested in B. aware of C. doubtful D. satisfied with25. A. when B. where C. which D. that26. A. abandoning B. balancing C. comparing D. mixing27. A. Depending on B. supplied with C. Faced with D. Insisting on28. A. different B. friendly C. positive D. general29. A. criticized B. informed C. warned D. reminded30. A. managed B. offered C. attempted D. expected31. A. grateful B. energetic C. independent D. practical32. A. examples B. limits C. rules D. goals33. A. question B. experience C. history D. occasion34. A. pay off B. come back C. run out D. turn up35. A. blessing B. gathering C. failure D. pleasure第二部分:阅读理解(共20小题,每小题2.5分,满分50分)AA Guide to the UniversityFoodThe TWU Cafeteria is open 7am to 8pm. It serves snacks(), drinks, ice cream bars and meals. You can pay with cash or your ID cards. You can add meal money to your ID cards at the Front Desk. Even if you do not buy your food in the cafeteria, you can use the tables to eat your lunch, to have meetings and to study.If you are on campus in the evening or lat at night, you can buy snacks, fast food, and drinks in the Lower Café located in the bottom level of theGouglas Centre. This area is often used for entertainment such as concerts, games or TV watching.RelaxationThe Globe, located in the bottom level of McMillan Hall, is available for relaxing, studying , cooking, and eating. Monthly activities are held here for all international students. Hours are 10 am to 10 pm, closed on Sundays.HealthLocated on the top floor of Douglas Hall, the Wellness Centre is committed to physical, emotional and social health. A doctor and nurse is available if you have health questions or need immediate medical help or personal advice. The cost of this is included in your medical insurance. Hours are Monday to Friday, 9am to noon and 1;00 to 4;30pm. Academic SupportAll students have access to the Writing Centre on the upper floor of Douglas Hall. Here, qualified volunteers will work with you on written work, grammar, vocabulary, and other academic skills. You can sign up for an appointment on the sign-up sheet outside the door two 30 –minute appointments per week maximum. This service is free. TransportationThe TWU Express is a shuttle() service. The shuttle transports students between campus and the shopping centre, leaving from the MattsonCentre. Operation hours are between 8am and 3pm. Saturdays only. Round trip fare is $1.36. What can you do in the TWU Cafeteria?A. Do homework and watch TVB. Buy drinks and enjoy concertsC. have meals and meet with friendsD. Add money to your ID and play chess37. Where and when can you cook your own food?A. The Globe, FridayB. The Lower Café, SundayC. The TWU Cafeteria , FridayD. The McMillan Hall , Sunday.38. The Guide tells us that the Wellness Centre _________.A. is open six days a weekB. offers services free of chargeC. trains students in medical careD. gives advice on mental health39. How can you seek help from the Writing Centre?A. By applying onlineB. By calling the centreC. By filling in a sign-up formD. By going to the centre directly40. What is the function of TWU Express?A. To carry students to the lecture halls.B. To provide students with campus toursC. To take students to the Mattson Centre.D. To transport students to and from the stores.BA world-famous Canadian author, Margaret Atwood, has created the world’s first long-distance signing device(装置), the LongPen.After many tiring……from city to city, Atwood thought there must be a better way to do them . She hired some technical experts and started her own company in 2004. Together they designed the LongPen. Here’s how it works: The author writes a personal message and signature on a computer tablet(手写板) using a special pen. On the receiving end, in another city, a robotic arm fitted with a regular pen signs the book. The author and fan can talk with each other via webcams(网络摄像机) and computer screens。