山西省临猗县临晋中学2019届高三9月月考数学(理)试卷 Word版含答案
临晋中学高三年级9月份月考数学试题(理) 命题人:刘志平(考试时间:120分钟;满分:150分 )第I 卷(选择题)一、单选题(每小题5分,共12题)1.已知集合{|A y y ==和集合2{|}B y y x ==,则A B ⋂等于 A .(0,1) B .[0,1] C . (0,)+∞ D . {(0,1),(1,0)}2.0,2sin x x x ∀>>“”的否定是( )A . 0,2sin x x x ∀><B .0,2sin x x x ∀>≤C . 0000,2sin x x x ∃≤≤D .0000,2sin x x x ∃>≤ 3.已知函数()()33,1,{log ,1a a x x f x x x --≤=>在R 上单调递增,则实数a 的取值范围为( )A . 13a <<B . 36a <<C . 36a <≤D . 01a << 4.已知角α的终边经过点P (4,-3),则2sin cos αα+的值等于( ) A . 25-B .45C .35- D .25 5.sin17sin 223cos17cos(43)+-等于( )A .12 B .12- C .6.ABC ∆中,,A B C 的对边分别是,,a b c ,其面积2224a b c S +-=,则角C 的大小是( )A .30B .90C . 45D .1357.已知函数2()4ln f x ax ax x =--,则()f x 在(1,3)上不单调的一个充分不必要条件.......是( )A .1(,)6a ∈-∞ B . 1(,)2a ∈-+∞ C . 1(,)2a ∈+∞ D . 11(,)26a ∈-8.已知ABC ∆的三边长构成公差为2的等差数列,且最大角为120°,则这个三角形的周长为 ( )A . 15B . 18C . 21D . 249.已知函数()sin()f x A wx ϕ=+(其中0,0,0A w ϕπ>><<)的图象关于点5(,0)12M π成中心对称,且与点M 相邻的一个最低点为2(,3)3N π-,则对于下列判断: ①直线2x π=是函数()f x 图象的一条对称轴;②点(,0)12π-是函数()f x 的一个对称中心;③函数1y =与35()()1212y f x x ππ=-≤≤的图象的所有交点的横坐标之和为7π. 其中正确的判断是( )A . ①②B . ①③C . ②③D . ①②③10.若关于x 的方程||()e ||x f x x =+=k.有两个不同的实根,则实数k 的取值范围是( )A .(0,1)B .(1,)+∞C .(1,0)-D .(,1)-∞-11.在ABC ∆中,角,,A B C 的对边分别为,,a b c ,若2222017a b c +=,则tan tan tan tan C CA B+=( ) A .12016 B . 12017 C . 11008D . 2201712.设函数'()f x 是奇函数()()∈f x x R 的导函数,当0>x 得2(4)()0->x f x 成立的x 的取值范围是( ) A .()()2,00,2- B .()(),22,-∞-+∞ C .()()2,02,-+∞D .()(),20,2-∞-第II 卷(非选择题)二、填空题(每小题5分,共4题) 13.()2322xdx -+=⎰ .14.若sin()313πθ+=,(0,)θπ∈,则cos θ=___________. 15.已知函数f (x )=log 13(x 2-ax +3a )在[1,+∞)上单调递减,则实数a 的取值范围是________.16.若实数,,,a b c d 满足222(3ln )(2)0b a a c d +-+-+=,则22)()(d b c a -+-的最小值为 .三、解答题17.(本小题满分10分)已知m >0,p :x 2﹣2x ﹣8≤0,q :2﹣m ≤x ≤2+m .(1)若p 是q 的充分不必要条件,求实数m 的取值范围;(2)若m=5,“p ∨q ”为真命题,“p ∧q ”为假命题,求实数x 的取值范围. 18.(本小题满分12分)已知函数f (x )是定义在R 上的偶函数,f (0)=0,当x >0时,f (x )=log 12x .(1)求函数f (x )的解析式; (2)解不等式f (x 2-1)>-2. 19.(本小题满分12分)已知函数f (x)=sin(ωx +φ) (ω>0,0<φ<π),其图像经过点M ⎝ ⎛⎭⎪⎫π3,12,且与x 轴两个相邻的交点的距离为π. (1)求f (x)的解析式;(2)在△ABC 中,a =13,f (A)=35,f (B)=513,求△ABC 的面积.20. (本小题满分12分) 锐角的内角,,的对边分别为,,,已知的外接圆半径为,且满足.(1)求角的大小; (2)若,求周长的最大值.21.(本小题满分12分) 已知函数1()ln(1)f x a x x=++. (Ⅰ)当2a =时,求()f x 的单调区间和极值;(Ⅱ)若()f x 在[2,4]上为增函数,求实数a 的取值范围. 22. (本小题满分12分)已知函数.ln )2()(2x x a ax x f ++-=(1)当1=a 时,求曲线)(x f y =在点))1(,1f (处的切线方程;(2)当0>a 时,若)(x f 在区间],1[e 上的最小值为-2,求a 的取值范围;26(3)若对任意2121),,0(,x x x x <+∞∈,且22112)(2)(x x f x x f +<+恒成立,求a 的取值范围.九月月考参考答案一、选择题 BDCAA CCACB CD B . 填空题13. 8 14. ⎝ ⎛⎦⎥⎤-12,2 15. 16. 8三、解答题17.解:(1)由x 2﹣2x ﹣8≤0得﹣2≤x ≤4,即p :﹣2≤x ≤4, 记命题p 的解集为A=[﹣2,4],……1分∵p 是q 的充分不必要条件,∴A ⊊B ,∴⎩⎨⎧≥+-≤-4222m m ,解得:m ≥4.………4分(2)∵“p ∨q ”为真命题,“p ∧q ”为假命题,∴命题p 与q 一真一假,………6分 ①若p 真q 假,则⎩⎨⎧>-<≤≤-7或342x x x ,无解,②若p 假q 真,则⎩⎨⎧≤≤->-<734或2x x x ,解得:﹣3≤x <﹣2或4<x ≤7.综上得:﹣3≤x <﹣2或4<x ≤7.………………10分 18、解:(1)当x <0时,-x >0,则f (-x )=log 12(-x ).因为函数f (x )是偶函数,所以f (-x )=f (x ).所以函数f (x )的解析式为f (x )=⎩⎨⎧log 12x ,x >0,0,x =0,log 12-x,x <0.………6分(2)因为f (4)=log 124=-2,f (x )是偶函数,所以不等式f (x 2-1)>-2可化为f (|x 2-1|)>f (4).又因为函数f (x )在(0,+∞)上是减函数,所以|x 2-1|<4,解得-5<x <5, 即不等式的解集为(-5,5). ………12分 19.解:(1)依题意知,T =2π,∴ω=1,∴f (x )=sin(x +φ)∵f (π3)=sin(π3+φ)=12,且0<φ<π ∴π3<π3+φ<4π3 ∴π3+φ=5π6 即φ=π2 ∴f (x )=sin ⎝ ⎛⎭⎪⎫x +π2=cos x . ………6分 (2)∵f (A )=cos A =35,f (B )=cos B =513, ∴A ,B ∈(0,π2)∴sin A =45,sin B =1213 ………7分∴sin C =sin(A +B )=sin A cos B +cos A sin B =5665 ………9分∵在△ABC 中a sin A =bsin B ∴b =15. ………11分∴S △ABC =12ab sin C =12×13×15×5665=84. ………12分20.解:(1)由正弦定理,得,再结合,得,解得,由为锐角三角形,得. ………5分(2)由、及余弦定理,得, ………7分即,结合,得,解得(当且仅当时取等号), ………10分所以(当且仅当时取等号),故当为正三角形时,周长的最大值为6. ………12分21、解:(1)由010()(1,0)(0,)x x f x ≠+>-⋃+∞且得函数的定义域为,又22221121(1)(21)()1(1)(1)x x x x f x x x x x x x ---+'=-+==+++,由()f x '>0得,所以()f x 的单调增区间为1(1,)(1,)2--+∞和,单调递减区间为1(0)(01)2-,和,.()f x 和()f x '随x 的变化情况如下表:由表知()f x 的极大值为极小值为(1)12ln 2f =+. ………6分(Ⅱ)221()(1)ax x f x x x --'=+,若()f x 在区间[2,4]上为增函数,则当[2,4]x ∈时,()0f x '≥恒成立,即2210(1)ax x x x --≥+, ………12分22、解:(Ⅰ)当1=a 时,xx x f x x x x f 132)(,ln 3)(2+-=+-= 因为2)1(,0)1('-==f f . 所以切线方程是.2-=y ………3分(Ⅱ)函数x x a ax x f ln )2(2)(++-=的定义域是),(∞+0当0>a 时,)0(1)2(21)2(2)('2>-+-=++-=x x x a ax x a ax x f令0)('=x f ,即0)1)(12(1)2(2)('2=--=++-=xax x x x a ax x f ,所以21=x 或a x 1= 当110≤<a,即1≥a 时,)(x f 在[1,e]上单调递增,所以)(x f 在[1,e]上的最小值是2)1(-=f ; 当e a <<11时,)(x f 在[1,e]上的最小值是2)1()1(-=<f af ,不合题意; 当e a≥1时,)(x f 在(1,e)上单调递减, 所以)(x f 在[1,e]上的最小值是2)1()(-=<f e f ,不合题意 综上所述1≥a ………7分 (Ⅲ)设x x f x g 2)()(+=,则x ax ax x g ln )(2+-=,只要)(x g 在),(∞+0上单调递增即可 而xax ax x a ax x g 1212)('2+-=+-=当0=a 时,01)('>=xx g ,此时)(x g 在),(∞+0上单调递增; 当0≠a 时,只需0)('≥x g 在),(∞+0上恒成立,因为),0(+∞∈x ,只要0122≥+-ax ax ,则需要0>a ,对于函数122+-=ax ax y ,过定点(0,1),对称轴041>=x ,只需082≤-=∆a a , 即80≤<a . 综上80≤≤a ………12分。
山西省临猗县临晋中学高三物理9月月考试题
山西省临猗县临晋中学2019届高三物理9月月考试题一、选择题(本大题共12个小题,每小题4分,共48分。
其中1~8题只有一个选项符合题意,9~12题有多个选项符合题意。
请将正确答案填写在答题纸相应位置。
)1.在物理学史上,最先通过实验正确认识力与运动的关系并且推翻“力是维持运动的原因”的物理学家是A.亚里士多德B.伽利略C.牛顿D.笛卡尔2. 做匀加速直线运动的物体,依次通过A、B、C三点,位移x AB=x BC,已知物体在AB段的平均速度为3m/s,在BC段的平均速度为6m/s,那么物体在B点时的瞬时速度大小为()A.4m/s B.4.5m/s C.5m/s D.5.5m/s3.如图所示,木盒中固定一质量为m的砝码,木盒和砝码在桌面上以一定的初速度一起滑行一段距离后停止。
现拿走砝码,而持续加一个竖直向下的恒力F(F=0.5mg),若其他条件不变,则木盒滑行的距离A. 变小B. 不变C.变大D.变大变小均可能4.甲、乙两车同时从同一地点沿同一方向运动,其中甲车由静止开始以0.5 m/s2的加速度做匀加速直线运动,经过30 s后立即以0.5 m/s2的加速度做匀减速直线运动直到停止。
乙车一直以9 m/s的速度做匀速直线运动,则下列判断正确的是A.在甲车加速过程中两车相遇B.在甲车减速过程中两车相遇C.两车不可能相遇D.两车可能相遇两次5. 在一根轻绳的两端各拴一个小球,一人用手拿绳上端的小球站在三层楼的阳台上放手让小球自由下落,两球落地时间差为△t.如果站在四楼阳台上,重复上述实验,则两球落地时间差会()A .不变B .变小C .变大D .由于层高未知,无法比较6.如图所示,一条细绳跨过光滑轻定滑轮连接物体A 、B ,A 悬挂起来,B 穿在一根竖直光滑杆上。
当绳与竖直杆间的夹角为θ时,B 沿杆下滑的速度为v,则下列判断正确的是A.A 的速度为vcos θB.A 的速度为vsin θC.细绳的张力一定大于A 的重力D.细绳的张力一定小于A 的重力7.如图所示,足够长的传送带与水平面夹角为θ,以速度v 0逆时针匀速转动。
2019届高三上学期开学考试(9月月考)数学(理)试题.docx
第I卷(选择题)一、选择题(本大题共12个小题,每小题5分,共60分,)1. 1.复数满足51)z = l + 3i,是的共轨复数,则同=A. UB. l + 2iC.初D.褐2. 小思说“浮躁成绩差”,他这句话的意思是:“不浮躁”是“成绩好”的( )A.充分条件B.必要条件C.充分必要条件D.既非充分也非必要条件3. 若等差数列{色}满足吗+。
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2016 =3,贝!1{色}的前2016项之和S2016 =( )A. 1506B. 1508C. 1510D. 15124. 如图,已知平行四边形ABCD中,BC = 2f= 45°, E为线段BC的中点,—BF 丄CD ,则AE BF=( )A. 2^/2B. 2C. A/2D. 15. 为得v = sin3x + cos3x的图象,可将y = J^sin3x的图象TT TTA.向右平移一个单位氏向左平移—个单位4 4TT TTC.向右平移一个单位D.向左平移一个单位12 12(ax-Rx + 苹36. 如果' 4x八x丿的展开式中各项系数的和为16,则展开式中x项的系数为39 39 21 21A. 2B. 2 c. 2 D. 27•为计算S=1气+ » +…+吉-歸设计了下面的程序框图,则在空白框中应A. Z = i + 1B. i = i + 2C. i = i + 3D. f = 7 + 4+, 8. 如果圆工+ (yT )‘T 上任意一点P(xj)都能使x+y+clO 成立'那么实数c的取值范围是"A. c 2 —>/2 — 1B. c S —>/2 — 1C. cN -^2 — 1D. c S -J2 — 1 <- 9. 在直角坐标系xQ ,中,直线/的参数方程为{;二;+上C 为参数),以原点O 为极点,以x 轴的正半轴为极轴建立极坐标系,曲线C 的极坐标方程为"Wisin ; & + £ ,则直线/和曲线C 的公共点有"A. 0个B. 1个C. 2个D.无数个“pX r < 0; 一 ,5(%) = /(%)+% +a,若9(幻存在2个零点,贝归的 lnx , x > 0取值范围是* A. [-1, 0) B. [0, -H=o) C. [-1, +<o) D. [1, +oo) *11.已知实数m e [0,4],则函数f (x) = minx - 2x 2 +渣定义域内单调递减的摭率为”A - 4B - IC - ;D - Af(x) =「x +1,O<X<1 12.设f (x)是定义在R 上的偶函数,且当x 2 0时, I 2-2X ,X >1 ,若对任意的x€[m,m + l],不等式f(l-x) <f(x + m)恒成立,则实数m 的最大值是第n 卷(非选择题)二、填空题:本大题共4小题,每小题5分,共20分,把答案填在答题卷的横线上。
山西省临猗县临晋中学高三数学9月月考试题 理
山西省临猗县临晋中学2019届高三数学9月月考试题 理(考试时间:120分钟;满分:150分 )第I 卷(选择题)一、单选题(每小题5分,共12题)1.已知集合{|A y y ==和集合2{|}B y y x ==,则A B ⋂等于 A .(0,1) B .[0,1] C . (0,)+∞ D . {(0,1),(1,0)}2.0,2sin x x x ∀>>“”的否定是( )A . 0,2sin x x x ∀><B .0,2sin x x x ∀>≤C . 0000,2sin x x x ∃≤≤D .0000,2sin x x x ∃>≤ 3.已知函数()()33,1,{log ,1a a x x f x x x --≤=>在R 上单调递增,则实数a 的取值范围为( )A . 13a <<B . 36a <<C . 36a <≤D . 01a << 4.已知角α的终边经过点P (4,-3),则2sin cos αα+的值等于( ) A . 25-B .45C .35- D .25 5.sin17sin 223cos17cos(43)+-等于( )A .12B .12-C .2- D6.ABC ∆中,,A B C 的对边分别是,,a b c ,其面积2224a b c S +-=,则角C 的大小是( )A .30B .90C . 45D .1357.已知函数2()4ln f x ax ax x =--,则()f x 在(1,3)上不单调的一个充分不必要条件.......是( )A .1(,)6a ∈-∞ B . 1(,)2a ∈-+∞ C . 1(,)2a ∈+∞ D . 11(,)26a ∈-8.已知ABC ∆的三边长构成公差为2的等差数列,且最大角为120°,则这个三角形的周长为 ( )A . 15B . 18C . 21D . 249.已知函数()sin()f x A wx ϕ=+(其中0,0,0A w ϕπ>><<)的图象关于点5(,0)12M π成中心对称,且与点M 相邻的一个最低点为2(,3)3N π-,则对于下列判断: ①直线2x π=是函数()f x 图象的一条对称轴;②点(,0)12π-是函数()f x 的一个对称中心;③函数1y =与35()()1212y f x x ππ=-≤≤的图象的所有交点的横坐标之和为7π. 其中正确的判断是( )A . ①②B . ①③C . ②③D . ①②③10.若关于x 的方程||()e ||x f x x =+=k.有两个不同的实根,则实数k 的取值范围是( )A .(0,1)B .(1,)+∞C .(1,0)-D .(,1)-∞-11.在ABC ∆中,角,,A B C 的对边分别为,,a b c ,若2222017a b c +=,则tan tan tan tan C CA B+=( ) A .12016 B . 12017 C . 11008D . 2201712.设函数'()f x 是奇函数()()∈f x x R 的导函数,当0>x 得2(4)()0->x f x 成立的x 的取值范围是( ) A .()()2,00,2- B .()(),22,-∞-+∞ C .()()2,02,-+∞D .()(),20,2-∞-第II 卷(非选择题)二、填空题(每小题5分,共4题) 13.()2322xdx -+=⎰ .14.若sin()313πθ+=,(0,)θπ∈,则cos θ=___________. 15.已知函数f (x )=log 13(x 2-ax +3a )在[1,+∞)上单调递减,则实数a 的取值范围是________.16.若实数,,,a b c d 满足222(3ln )(2)0b a a c d +-+-+=,则22)()(d b c a -+-的最小值为 . 三、解答题17.(本小题满分10分)已知m >0,p :x 2﹣2x ﹣8≤0,q :2﹣m ≤x ≤2+m .(1)若p 是q 的充分不必要条件,求实数m 的取值范围;(2)若m=5,“p ∨q ”为真命题,“p ∧q ”为假命题,求实数x 的取值范围. 18.(本小题满分12分)已知函数f (x )是定义在R 上的偶函数,f (0)=0,当x >0时,f (x )=log 12x .(1)求函数f (x )的解析式; (2)解不等式f (x 2-1)>-2. 19.(本小题满分12分)已知函数f (x)=sin(ωx +φ) (ω>0,0<φ<π),其图像经过点M ⎝ ⎛⎭⎪⎫π3,12,且与x 轴两个相邻的交点的距离为π. (1)求f (x)的解析式;(2)在△ABC 中,a =13,f (A)=35,f (B)=513,求△ABC 的面积.20. (本小题满分12分) 锐角的内角,,的对边分别为,,,已知的外接圆半径为,且满足.(1)求角的大小; (2)若,求周长的最大值.21.(本小题满分12分) 已知函数1()ln(1)f x a x x=++. (Ⅰ)当2a =时,求()f x 的单调区间和极值;(Ⅱ)若()f x 在[2,4]上为增函数,求实数a 的取值范围. 22. (本小题满分12分)已知函数.ln )2()(2x x a ax x f ++-=(1)当1=a 时,求曲线)(x f y =在点))1(,1f (处的切线方程;(2)当0>a 时,若)(x f 在区间],1[e 上的最小值为-2,求a 的取值范围;(3)若对任意2121),,0(,x x x x <+∞∈,且22112)(2)(x x f x x f +<+恒成立,求a 的取值范26围.九月月考参考答案一、选择题 BDCAA CCACB CD B . 填空题13. 8 14. ⎝ ⎛⎦⎥⎤-12,2 15. 16. 8三、解答题17.解:(1)由x 2﹣2x ﹣8≤0得﹣2≤x ≤4,即p :﹣2≤x ≤4, 记命题p 的解集为A=[﹣2,4],……1分∵p 是q 的充分不必要条件,∴A ⊊B ,∴⎩⎨⎧≥+-≤-4222m m ,解得:m ≥4.………4分(2)∵“p ∨q ”为真命题,“p ∧q ”为假命题,∴命题p 与q 一真一假,………6分 ①若p 真q 假,则⎩⎨⎧>-<≤≤-7或342x x x ,无解,②若p 假q 真,则⎩⎨⎧≤≤->-<734或2x x x ,解得:﹣3≤x <﹣2或4<x ≤7.综上得:﹣3≤x <﹣2或4<x ≤7.………………10分 18、解:(1)当x <0时,-x >0,则f (-x )=log 12(-x ).因为函数f (x )是偶函数,所以f (-x )=f (x ).所以函数f (x )的解析式为f (x )=⎩⎨⎧log 12x ,x >0,0,x =0,log 12-x,x <0.………6分(2)因为f (4)=log 124=-2,f (x )是偶函数,所以不等式f (x 2-1)>-2可化为f (|x 2-1|)>f (4).又因为函数f (x )在(0,+∞)上是减函数,所以|x 2-1|<4,解得-5<x <5, 即不等式的解集为(-5,5). ………12分 19.解:(1)依题意知,T =2π,∴ω=1,∴f (x )=sin(x +φ)∵f (π3)=sin(π3+φ)=12,且0<φ<π ∴π3<π3+φ<4π3 ∴π3+φ=5π6 即φ=π2 ∴f (x )=sin ⎝ ⎛⎭⎪⎫x +π2=cos x . ………6分 (2)∵f (A )=cos A =35,f (B )=cos B =513, ∴A ,B ∈(0,π2)∴sin A =45,sin B =1213 ………7分∴sin C =sin(A +B )=sin A cos B +cos A sin B =5665 ………9分∵在△ABC 中a sin A =bsin B ∴b =15. ………11分∴S △ABC =12ab sin C =12×13×15×5665=84. ………12分20.解:(1)由正弦定理,得,再结合,得,解得,由为锐角三角形,得. ………5分(2)由、及余弦定理,得, ………7分即,结合,得,解得(当且仅当时取等号), ………10分所以(当且仅当时取等号),故当为正三角形时,周长的最大值为6. ………12分21、解:(1)由010()(1,0)(0,)x x f x ≠+>-⋃+∞且得函数的定义域为,又22221121(1)(21)()1(1)(1)x x x x f x x x x x x x ---+'=-+==+++,由()f x '>0得,所以()f x 的单调增区间为1(1,)(1,)2--+∞和,单调递减区间为1(0)(01)2-,和,.()f x 和()f x '随x 的变化情况如下表:由表知()f x 的极大值为极小值为(1)12ln 2f =+. ………6分(Ⅱ)221()(1)ax x f x x x --'=+,若()f x 在区间[2,4]上为增函数,则当[2,4]x ∈时,()0f x '≥恒成立,即2210(1)ax x x x --≥+, ………12分22、解:(Ⅰ)当1=a 时,xx x f x x x x f 132)(,ln 3)(2+-=+-= 因为2)1(,0)1('-==f f . 所以切线方程是.2-=y ………3分(Ⅱ)函数x x a ax x f ln )2(2)(++-=的定义域是),(∞+0当0>a 时,)0(1)2(21)2(2)('2>-+-=++-=x x x a ax x a ax x f令0)('=x f ,即0)1)(12(1)2(2)('2=--=++-=xax x x x a ax x f ,所以21=x 或a x 1= 当110≤<a,即1≥a 时,)(x f 在[1,e]上单调递增,所以)(x f 在[1,e]上的最小值是2)1(-=f ; 当e a <<11时,)(x f 在[1,e]上的最小值是2)1()1(-=<f af ,不合题意; 当e a≥1时,)(x f 在(1,e)上单调递减, 所以)(x f 在[1,e]上的最小值是2)1()(-=<f e f ,不合题意 综上所述1≥a ………7分 (Ⅲ)设x x f x g 2)()(+=,则x ax ax x g ln )(2+-=,只要)(x g 在),(∞+0上单调递增即可 而xax ax x a ax x g 1212)('2+-=+-=当0=a 时,01)('>=xx g ,此时)(x g 在),(∞+0上单调递增; 当0≠a 时,只需0)('≥x g 在),(∞+0上恒成立,因为),0(+∞∈x ,只要0122≥+-ax ax ,则需要0>a ,对于函数122+-=ax ax y ,过定点(0,1),对称轴041>=x ,只需082≤-=∆a a , 即80≤<a . 综上80≤≤a ………12分。
山西省运城市临猗县临晋中学高三数学9月月考试题 文(
临晋中学高三年级9月份月考数学试题(文)第Ⅰ卷 (选择题 共60分)一、选择题:本大题共12小题,每小题5分,共60分,在每小题给出的四个选项中,只有一项是符合题目要求的。
1.若复数22(3)(56)i m m m m -+-+(R m ∈)是纯虚数,则m 的值为( )A .0B .2C .0或3D .2或3 2.设U =R ,A ={x |x 2-3x -4>0},B ={x |x 2-4<0},则=B A C U )(( )A .{x |x ≤-1,或x ≥2}B .{x |-1≤x <2}C .{x |-1≤x ≤4}D .{x |x ≤4} 3.已知错误!未找到引用源。
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,则αcos =( ) A .54 B .53 C .53- D .54-4.已知命题:p 对任意x R ∈,总有20x>;:"1"q x >是"2"x >的充分不必要条件,则下列命题为真命题的是( )A .q p ⌝∧ .B p q ⌝∧⌝ .C p q ⌝∧ D.q p ∧ 5.曲线2xy x =-在点(1,-1)处的切线方程为( ) A .y =x -3 B .y =-2x +1 C .y =2x -4 D .y =-2x -3 6.函数x xx f 2log 1)(+-=的一个零点落在下列哪个区间 ( ) A .)1,0( B .)2,1( C .)3,2( D .)4,3(7.已知函数2(1)y f x =-定义域是0,5⎡⎤⎣⎦,则y =f (2x +1)的定义域( )A .[]052, B .]7,4[- C .]4,4[- D . ]23,1[- 8.将函数)32cos(3π+=x y 的图像向右平移()0m m >个长度单位后,所得到的图像关于原点对称,则m 的最小值是( ) A .4π B .3π C .56π D .125π9.函数)2(log )(ax x f a -=在[]3,0上为增函数,则a 的取值范围是( )A .⎪⎭⎫⎝⎛1,32 B .(0,1) C .⎪⎭⎫ ⎝⎛32,0 D .[)+∞,310.函数y =2x 2–e |x |在[–2,2]的图像大致为 ( )A B C D 11.设f (x )是奇函数,且在(0,+∞)内是增加的,又f (-3)=0,则x·f (x )<0的解集是( )A .{x |-3<x <0,或x >3}B .{x |x <-3,或0<x <3}C .{x |-3<x <0,或0<x <3}D .{x |x <-3,或x >3}12.已知函数()y f x =的定义在实数集R 上的奇函数,且当(,0)x ∈-∞时,'()()xf x f x <-(其中'()f x 是()f x 的导函数),若3(3)a f =,(lg3)(lg3)b f =,2211(log )(log )44c f =,则( )A .c a b >>B .c b a >>C .a b c >>D .a c b >>第Ⅱ卷(非选择题 共90分)本卷包括必考题和选考题两部分.第13题~第21题为必考题,每个试题考生都必须做答.第22题~第24题为选考题,考生根据要求做答. 二、填空题:本大题共4小题,每小题5分.13.将函数)(32sin2π+=x y 的图像向右平移41个周期后,所得图像对应的函数为____________. 14.已知偶函数()f x 在[)0,+∞单调递减,若f (x -2)>f(3),则x 的取值范围是__________. 15.已知直线y =e x +1与曲线)ln(a x y +=相切,则a 的值为 .16.已知函数f (x )=2,0ln ,0x e x x x ⎧-≤⎨>⎩(其中e 为自然对数的底数),则函数y =f (f (x ))的零点等于 .三、解答题:本大题共6小题,共74分.解答应写出文字说明,证明过程或演算步骤. 17.(本小题满分12分)已知函数()sin()1f x A x ωϕ=++(0,0A ω>>,22ππϕ-≤≤)的图像关于直线x =π3对称,最大值为3,且图像上相邻两个最高点的距离为π。
山西省临猗县临晋中学2019届高三数学9月月考试题 文
山西省临猗县临晋中学2019届高三数学9月月考试题 文第Ⅰ卷一、 选择题:本大题共12小题。
每小题5分,在每个小题给出的四个选项中,只有一项是符合要求的。
1.已知集合}11|{≤≤-=x x M ,},|{2M x x y y N ∈==,则=N M A . ]1,1[- B.),0[+∞ C. )1,0( D. ]1,0[ 2.已知复数z 满足5)2(=-z i ,则z 在复平面内对应的点位于 A.第一象限 B.第二象限 C.第三象限 D.第四象限 3.下列函数中,既是偶函数又在区间)2,1(内是增函数的是A.x y 2cos =B.x y 2log =C.2x x e e y --= D.13+=x y4.不等式20x x m -+>在R 上恒成立的一个必要不充分条件是 A .0m >B .01m <<C .14m >D .1m >5.已知数列{}n a 的前n 项和238n S n n =+(*n N ∈),则{}n a 的通项公式为( )A .68n a n =+B .65n a n =+C .38n a n =+D .35n a n =+6.已知函数()122,11log ,1x x f x x x -⎧≤=⎨->⎩,则满足 ()2f x ≤的x 的取值范围是A .[1,2]-B .[0,2]C .[1,)+∞D .[0,)+∞ 7. 已知()(),ln 1xf x e xg x x x =-=++,命题():,0p x R f x ∀∈>,命题()0:0,q x ∃∈+∞,使得()00g x =,则下列说法正确的是 A .p 是真命题,()00:,0p x R f x ⌝∃∈< B .p 是假命题,()00:,0p x R f x ⌝∃∈≤ C .q 是真命题,()():0,,0q x g x ⌝∀∈+∞≠D .q 是假命题,()():0,,0q x g x ⌝∀∈+∞≠8.函数331x x y =-的图象大致是9.在△中,为边上的中线,为的中点,则EB =A .3144AB AC - B .1344AB AC - C .3144AB AC + D . 1344AB AC + 10.如图所示,是函数sin()y A x k ωϕ=++(0A >,0ω>,||2πϕ<)的图象的一部分,则函数解析式是 A .2sin(2)16y x π=++ B .sin(2)13y x π=++C .12sin()226y x π=++ D .sin(2)23y x π=++11.已知函数()x f 的定义域为R .当x < 0时,();13-=x x f 当-1 ≤ x ≤ 1时,()();x f x f -=-当x >12时,11()()22f x f x +=-,则()=6f A .2 B .0 C .-1D .-212. 已知函数()33f x x x =-,过点(1,)(2)A m m ≠-可作曲线()f x 的三条切线,则m 的取值范围是A .(1,1)-B .(2,3)-C .(2,1)-D .(3,2)--第Ⅱ卷二、填空题:共4小题,每小题5分.13.已知向量→→b a ,,满足)3,2(=→a ,)()(→→→→-⊥+b a b a ,则=→||b . 14.曲线在点处的切线方程为__________.15.下面有四个命题:①函数y =sin 4x -cos 4x 的最小正周期是;②在同一坐标系中,函数y =sin x 的图象和函数y =x 的图象有三个公共点; ③把函数;④函数。
山西省运城市临猗中学高三上学期第一次月考数学理试题含答案
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20.(12 分)在△ABC 中,内角 A,B,C 所对的边分别为 a,b,c,已知 b+c=2a, 3c sin B=4a sin C. (1)求 cos B;
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山西省临猗县临晋中学2019_2020学年高一数学9月月考试题
山西省临猗县临晋中学2019-2020学年高一数学9月月考试题(无答案)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
考试内容必修一第一章。
满分100分。
考试时间90分钟。
第Ⅰ卷(选择题 共30分)一、选择题(本大题共10个小题,每小题3分,共30分,在每小题给出的四个选项中,只有一项是符号题目要求的)1.已知M ={x|x≤5,x ∈R},a =11,b =26则( )A .a ∈M,b ∉MB .a ∈M,b ∈MC .a ∈M,b ∈MD .a ∈M,b ∈M2.已知集合A ={x|0<x <3},B ={x|1≤x<2}则A ∪B =( )A .{x|x≤0}B .{x|x≥2}C .{x|1≤x<3}D .{x|0<x <2}3.如图,可作为函数y =f(x)的图象是( )4.已知集合A ={1,2,3,4,5},B ={(x,y)|x ∈A,y ∈A,x -y ∈A};则B 中所含元素的个数为( )A .3B .6C .8D .105.设函数f(x)=⎩⎨⎧2,<x -1,,则f(f(f(1)))=( )A .0 B. 2 C .1 D .26.f(x)=-x 2+mx 在(-∞,1]上是增函数,则m 的取值范围是( )A .{2}B .(-∞,2]C .[2,+∞)D .(-∞,1]7.如果奇函数f(x)在区间[1,5]上是减函数,且最小值为3,那么f(x)在区间[-5,-1]上是( )A .增函数且最小值为3B .增函数且最大值为3C .减函数且最小值为-3D .减函数且最大值为-38.若函数f(x)=(m -1)x 2+(m -2)x +(m 2-7m +12)是偶函数,则m 的值是( )A .1B .2C .3D .49.已知11252f x x ⎛⎫-=- ⎪⎝⎭,且()6f a =,则a 等于( ) A. 74- B. 74 C. 43 D. 43- 10.若f(x)是偶函数且在(0,+∞)上减函数,又f(-3)=1,则不等式f(x)<1的解集为( )A .{x|x>3或-3<x<0}B .{x|x<-3或0<x<3}C .{x|x<-3或x>3}D .{x|-3<x<0或0<x<3}第Ⅱ卷(非选择题 共70分)二、填空题(本大题共6个小题,每小题3分,共18分,把正确答案填在题中横线上)11.已知反比例函数x 2-k =y ,其图像在第一、三象限内,则k 的取值范围为________12.已知集合{}{}1,2,3,4,1,2A B ==,则满足条件B C A ⊆⊆的集合C 的个数为__________.13.若函数f(x)=x 2-|x +a|为偶函数则a =________.14.已知函数25,(1)()(1)x ax x f x a x x⎧---≤⎪=⎨>⎪⎩是R 上的增函数,则a 的取值范围是. 15.设函数f(x)(x ∈R)为奇函数,f(1)=12,f(x +2)=f(x)+f(2),则f(5)=_______. 16. 若函数f(x)=x 2-3x -4的定义域为[0,m],值域为[-254,-4],则m 的取值范围________.三、解答题(本大题共5个小题,共52分,17,18每题8分,19,20,21每题12分。
山西省运城市临猗中学2019届高三上学期第一次月考理数试卷
2018-2019学年第一学期高三第一次月考理 数 试 卷一、选择题(共12小题,每小题5分,共60分,在每小题列出的四个选项中,选出符合题目要求的一项)1. 已知{A x y =,{}1,B m =,若B A ⊆,则 (A ). 20≤<m (B ).2110≤<<<m m 或 (C ). 10<<m (D ). 21≤<m2. 下列函数中,其定义域和值域分别于函数lg 10=x y 的定义域和值域相同的是(A )=y x (B )lg =y x (C )2=x y (D )=y3. 函数()ln ||f x x x =的图像大致是(A )(B )(C )(D )4. 设,a b 都是不等于1的正数,则“333>>a b ”是“log 3log 3<a b ”的( )(A )必要不充分条件 (B )充分不必要条件 (C )充分必要条件 (D )既不充分也不必要条件5. 由曲线,x y =直线y x y 及2-=轴所围成的图形的面积为( )(A )310 (B) 4 (C )316(D )6()()=-+-+44264lg 2158lg 500lg .6e (A).4-e (B).3lg2-e (C )2+e (D )e7. 已知函数222,0()2,0x x x f x x x x ⎧--≥⎪=⎨-<⎪⎩,若()()2(1)f a f a f --≤,则a 的取值范围是(A )[1,)+∞ (B )(,1]-∞ (C )[1,1]- (D )[2,2]-8.给出下列四个命题:①;”的逆否命题为假命题,则命题“若14==απαtan②;1sin ,:,1sin ,:00>∈∃⌝≤∈∀x R x p x R x p 则命题③();为偶函数”的充要条件”是“函数“ϕππϕ+=∈+=x y Z k k 2sin )(2④)(其中正确命题的个数是为真命题。
山西省运城市临猗县临晋中学高三数学理联考试卷含解析
山西省运城市临猗县临晋中学高三数学理联考试卷含解析一、选择题:本大题共10小题,每小题5分,共50分。
在每小题给出的四个选项中,只有是一个符合题目要求的1. 若变量x,y满足则z=3x+2y的最大值是()A.90 B.80 C.70 D.40参考答案:C【考点】简单线性规划的应用.【分析】本题考查的知识点是简单线性规划的应用,我们要先画出满足约束条件的平面区域,然后分析平面区域里各个角点,进一步求出目标函数z=3x+2y的最大值.【解答】解:满足约束条件的平面区域如下图示:由图可知,当x=10,y=20时,z=3x+2y有最大值70故选C.2. 已知变量满足,则的最大值为()A.4 B.7 C.10 D.12 参考答案:C先作可行域,则直线过点A(4,2)时取最大值10,选C.3. 已知实数x, y满足条件,则目标函数A.有最小值0,有最大值6 B.有最小值,有最大值3C.有最小值3,有最大值6 D.有最小值,有最大值6参考答案:D画出不等式组表示的平面区域如图中阴影部分所示。
当目标函数过直线与直线的交点(3, 0),目标函数取得最大值6;当目标函数过直线与直线的交点(0, 2)时,目标函数取得最小值。
故选D。
4. 的三内角所对边的长分别为设向量,,若,则角的大小为()A. B. C. D.参考答案:B5. 已知命题p:“?x∈(0,+∞),lnx+4x≥3”;命题q:“?x0∈(0,+∞),8x0+≤4”.则下列命题为真命题的是()A.(¬p)∧q B.p∧q C.p∨(¬q)D.(¬p)∧(¬q)参考答案:A【考点】复合命题的真假.【分析】分别判断出p,q的真假,从而判断出复合命题的真假即可.【解答】解:取x=,可知lnx+4x<3,故命题p为假命题;当x0>0时,8x0+≥2=4,当且仅当x0=时等号成立,故命题q为真命题;所以(¬p)∧q为真命题,p∧q、p∨(¬q)、(¬p)∧(¬q)为假命题,故选:A.6. 如图,在△ABC中,∠ACB=30°,点D在BC上,AD=BD=1,AB=,则∠BAC=( )A.120°B.150°C.135°D.90°参考答案:A 考点:余弦定理的应用.专题:解三角形.分析:在△ABD中,由余弦定理可求得cos∠ADB=﹣.cos∠DAB=,从而可求∠ADB,∠DAB的值,即可求∠ADC.∠CAD,从而可求∠BAC=∠CAD+∠DAB的值.解答:解:∵在△ABD中,cos∠ADB===﹣.cos∠DAB===,∴∠ADB=120°,∠DAB=30°∴∠ADC=180°﹣∠ADB=60°.∴∠CAD=180°﹣∠ACB﹣∠ADC=90°∴∠BAC=∠CAD+∠DAB=90°+30°=120°.故选:A.点评:本题主要考查了余弦定理,三角形内角和定理的综合应用,属于基本知识的考查.7. (2011·天津高考)若x,y∈R,则“x≥2且y≥2”是“x2+y2≥4”的()A.充分而不必要条件 B.必要而不充分条件C.充分必要条件 D.既不充分也不必要条件参考答案:A8. (05年全国卷Ⅱ理)函数的反函数是(A)(B)(C)(D)参考答案: 答案:B9. 函数的定义域为( )D解答: 解:要使函数有意义,必须,解得x ≥0且x ≠1.所以函数的定义域为[0,1)∪(1,+∞). 故选D .10. 在中,分别是内角的对边,则( )A .B .C .D .参考答案:A二、 填空题:本大题共7小题,每小题4分,共28分11. 某城市修建经济适用房.已知甲、乙、丙三个社区分别有低收入家庭360户、270户、180户,若首批经济适用房中有90套住房用于解决住房紧张问题,采用分层抽样的方法决定各社区户数,则应从乙社区中抽取低收入家庭的户数为____________.参考答案:30 略12. 已知无穷等比数列的前项和的极限存在,且,,则数列各项的和为 .参考答案: 32 略13. 设函数则方程有实数解的个数为 .参考答案:14. 关于几何体有以下命题:①有两个面平行,其余各面都是平行四边形的几何体叫棱柱; ②有一个面是多边形,其余各面都是三角形的几何体叫棱锥;③棱台是由平行于底面的平面截棱锥所得到的平面与底面之间的部分;④两个底面平行且相似,其余各面都是梯形的多面体是棱台; ⑤一个直角三角形绕其一边旋转一周所形成的封闭图形叫圆锥. 其中正确的有------________.(请把正确命题的题号写上)参考答案:略15. 已知定义域为(0,+∞)的函数f (x )满足:(1)对任意x∈(0,+∞),恒有f (2x )=2f(x )成立;(2)当x∈(1,2]时,f (x )=2﹣x .给出如下结论: ①对任意m∈Z,有f (2m )=0; ②存在n∈Z,使得f (2n +1)=9; ③函数f (x )的值域为[0,+∞);④“函数f (x )在区间(a ,b )上单调递减”的充要条件是“存在k∈Z,使得(a ,b )?(2k ,2k+1)”.其中所有正确结论的序号是 .参考答案:①③④【考点】必要条件、充分条件与充要条件的判断;函数的值域;抽象函数及其应用.【专题】规律型.【分析】依据题中条件注意研究每个选项的正确性,连续利用题中第(1)个条件得到①正确;利用反证法及2x变化如下:2,4,8,16,32,判断②命题错误;连续利用题中第③个条件得到③正确;据①③的正确性可得④是正确的.【解答】解:①f(2m)=f(2?2m﹣1)=2f(2m﹣1)=…=2m﹣1f(2)=0,正确;②f(2n+1)=2n+1﹣2n﹣1,假设存在n使f(2n+1)=9,即存在x1,x2,﹣=10,又,2x变化如下:2,4,8,16,32,显然不存在,所以该命题错误;③取x∈(2m,2m+1),则∈(1,2];f()=2﹣,f()=…=2m f()=2m+1﹣x从而f(x)∈[0,+∞),正确④根据③的分析容易知道该选项正确;综合有正确的序号是①③④.故答案为①③④【点评】本题通过抽象函数,考查了函数的周期性,单调性,以及学生的综合分析能力,难度不大.16. 在平面直角坐标系中,有一定点,若线段的垂直平分线过抛物线()的焦点,则抛物线的方程为_____________.参考答案:17. 已知S n是等差数列{a n}的前n项和,且S11=35+S6,则S17的值为.参考答案:119考点:等差数列的前n项和.专题:计算题.分析:由S11=35+S6可得S11﹣S6=35即a7+a8+a9+a10+a11=35,由等差数列的性质可得,5a9=35 从而可得a9=7代入等差数列的和公式可求解答:解:∵S11=35+S6∴S11﹣S6=35即a7+a8+a9+a10+a11=35由等差数列的性质可得,5a9=35∴a9=7∴=故答案为119点评:本题主要考查了等差数列的性质(若m+n=p+q,则a m+a n=a p+a q)的应用,还考查了等差数列的前n项和公式的应用.三、解答题:本大题共5小题,共72分。
2019届山西省临猗县临晋中学高三9月月考英语试卷
临晋中学2019届高三年级9月份月考英语试题★祝考试顺利★注意事项:1、考试范围:高考考查范围。
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一阅读理解(每小题3分,共60分)A.Suppose you’re in a rush¸felling tired¸not paying attention to your screen¸and you send an email that could get you in trouble.Realisation will probably set in seconds after you’ve clicked “send”.You freeze in horrors and burn with shame.What to do? Here are four common email accidents¸and how to recover.Clicking “send” too soonDon’t waste your time trying to find out if the receivers has read it yet.Write another email as swiftly as you can and send it with a brief explaining that this is the correct version and the previous version should be ignored.Writing the wrong nameThe sooner you notice¸the better.Respond quickly and briefly¸apologizing for your mistake.Keep the tone measured: don’t handle it too lightly¸as people can be offened¸especially if your error suggests a misunderstanding of their culture(i.e.incorrect ordering of Chinese names).Clicking “reply all” unintentionallyYou accidentally reveal(透露)to entire company what menu choices you would prefer at the staff Christmasdinner¸or what holiday you’d like to take.In this instance¸the best solution is to send a quick¸light-hearted apology to explain your awkwardness.But it can quickly rise to something worse¸when everyone starts hitting “reply all” to join in a long and unpleasant conversation.In this instance¸step away from your keyboard to allow everyone to calm down.Sending an offensive message to its subjectThe most awkward email mistake is usually committed in anger.You write an unkind message about someone¸intending to send it to a friend¸but accidentally send it to the person you’re discussing.In that case ¸ask to speak in person as soon as possible and say sorry.Explain your frustrations calmly and sensibly—see it as an opportunity to clear up any difficulties you may have with this person.1.After realising an email accident¸you are likely to feel _______.A.curious B.tired C.awful D.funny2.If you have written the wrong name in an email¸it is best to ________.A.apologise in a serious manner B.tell the receiver to ignore the errorC.learn to write the name correctly D.send a short notice to everyone3.What should you do when an unpleasant conversation is started by your “reply all” email?A.Try offering other choices.B.Avoid further involvement.C.Meet other staff members.D.Make a light-hearted apology.4.How should you deal with the problem caused by an offensive email?A.By promising not to offend the receiver again.B.By seeking support from the receiver’s friends.C.By asking the receiver to control his anger.D.By talking to the receiver face to face.5.What is the passage mainly about?A.Defining email errors.B.Reducing email mistakes.C.Handling email accidents.D.Improving email writing.BGetting less sleep has become a bad habit for most American kids.According to a new survey(调查) by the National Sleep Foundation¸51% of kids aged 10 to 18 go to bed at 10 pm or later on school nights¸even though they have to get up early.Last year the Foundation reported that nearly 60% of 7- to 12-year-olds said they felt tired during the day¸and 15% said they had fallen asleep at school.How much sleep you need depends a lot on your age.Babies need a lot of rest: most of them sleep about 18 hours a day! Adults need about eight hours.For most school-age children¸ten hours is ideal(理想的).But the new National Sleep Foundation survey found that 35% of 10- to 12-year-olds get only seven or eight hours.And guess what almost half of the surveyed kids said they do before bedtime? Watch TV.“More children are going to bed with TVs on¸and there are more opportunities(机会) to stay awake¸with more homework¸the Internet and the phone¸” says Dr.Mary Carskadon¸a sleep researcher at Brown University Medical School.She says these activities at bedtime can get kids all excited and make it hard for them to calm down and sleep.0ther experts say part of the problem is chemical.Changing levels of body chemicals called hormones not only make teenagers’ bodies develop adult characteristics¸but also make it hard for teenagers to fall asleep before 11 pm.Because sleepiness is such a problem for teenagers¸some school districts have decided to start high school classes later than they used to.Three years ago¸schools in Edina¸Minnesota¸changed the start time from 7:25 am to 8:30 am.Students¸parents and teachers are pleased with the results.6.What is the new National Sleep Foundation survey on?A.American kid s’ sleeping habits.B.Teenagers’ sleep-related diseases.C.Activities to prevent sleeplessness.D.Learning problems and lack of sleep.7.How many hours of sleep do 11-year-olds need every day?A.7 hours.B.8 hours.C.10 hours.D.18 hours.8.Why do teenagers go to sleep late according to Carskadon?A.They are affected by certain body chemicals.B.They tend to do things that excite them.C.They follow their parents’ examples.D.They don’t need to go to schoo l early.CPassenger pigeons(旅鸽) once flew over much of the United States in unbelievable numbers.Written accounts from the 18th and 19th centuries described flocks(群) so large that they darkened the sky for hours.It was calculated that when its population reached its highest point, there were more than 3 billion passenger pigeons – a number equal to 24 to 40 percent of the total bird population in the United States, making it perhaps the most abundant bird in the world.Even as late as 1870 when their numbers had already become smaller, a flock believed to be 1 mile wide and 320 miles (about 515 kilometers) long was seen near Cincinnati.Sadly, the abundance of passenger pigeons may have been their undoing.Where the birds were most abundant, people believed there was an ever-lasting supply and killed them by the thousands.Commercial hunters attracted them to small clearings with grain, waited until pigeons had settled to feed, then threw large nets over them, taking hundreds at a time.The birds were shipped to large cities and sold in restaurants.By the closing decades of the 19th century, the hardwood forests where passenger pigeons nested had been damaged by Americans’ need for wood, which scattered (驱散) the flocks and forced the birds to go farther north, where cold temperatures and spring storms contributed to their decline.Soon the great flocks were gone, never to be seen again.In 1897, the state of Michigan passed a law prohibiting the killing of passenger pigeons, but by then, no sizable flocks had been seen in the state for 10 years.The last confirmed wild pigeon in the United States wasshot by a boy in Pike County, 0hio, in 1900.For a time, a few birds survived under human care.The last of them, known affectionately as Martha, died at the Cincinnati Zoological Garden on September 1, 1914.9.In the 18th and early 19th centuries, passenger pigeons _______.A.were the biggest bird in the world B.lived mainly in the south of AmericaC.did great harm to the natural environmentD.were the largest bird population in the US10.The underlined word “undoing” probably refers to the pigeons’ ______.A.escape B.ruin C.liberation D.evolution11.What was the main reason for people to kill passenger pigeons?A.To seek pleasure.B.To save other birds.C.To make money.D.To protect crops.12.What can we infer about the law passed in Michigan?A.It was ignored by the public.B.It was declared too late.C.It was unfair.D.It was strict.DHollywood’s theory that machines with evil(邪恶) minds will drive armies of killer robots is just silly.The real problem relates to the possibility that artificial intelligence(AI) may become extremely good at achieving something other than what we really want.In 1960 a well-known mathematician Norbert Wiener¸who founded the field of cybernetics(控制论)¸put it this way:“If we use¸to achieve our purposes¸a mechanical agency with whose operation we cannot effectively interfere(干预)¸we had better be quite sure that the purpose put into the machine is the purpose which we really desire.”A machine with a specific purpose has another quality¸one that we usually associate with living things:a wish to preserve its own existence.For the machine¸this quality is not in-born¸nor is it something introduced by humans; it is a logical consequence of the simple fact that the machine cannot achieve its original purpose if it is dead.So if we send out a robot with the single instruction of fetching coffee¸it will have a strong desire to secure success by disabling its own off switch or even killing anyone who might interfere with its task.If we are not careful¸then¸we could face a kind of global chess match against very determined¸super intelligent machines whose objectives conflict with our own¸with the real world as the chessboard.The possibility of entering into and losing such a match should concentrate the minds of computer scientists.Some researchers argue that we can seal the machines inside a kind of firewall¸using them to answer difficult questions but never allowing them to affect the real world.Unfortunately¸that plan seems unlikely to work:we have yet to invent a firewall that is secure against ordinary humans¸let alone super intelligent machines.Solving the safety problem well enough to move forward in AI seems to be possible but not easy.There areprobably decades in which to plan for the arrival of super intelligent machines.But the problem should not be dismissed out of hand¸as it has been by some AI researchers.Some argue that humans and machines can coexist as long as they work in teams—yet that is not possible unless machines share the goals of humans.0thers say we can just “switch them off” as if super intelligent machines are too stupid to think of that possibility.Still others think that super intelligent AI will never happen.0n September 11¸1933¸famous physicist Ernest Rutherford stated¸with confidence¸“Anyone who expects a source of power in the transformation of these atoms is talking moonshine.” However¸on September 12¸1933¸physicist Leo Szilard invented the neutron-induced(中子诱导) nuclear chain reaction.13.Paragraph 1 mainly tells us that artificial intelligence may .A.run out of human control B.satisfy hu man’s real desiresC.command armies of killer robots D.work faster than a mathematician14.Machines with specific purposes are associated with living things partly because they might be able to .A.prevent themselves from being destroyedB.achieve their original goals independentlyC.do anything successfully with given ordersD.beat humans in international chess matches15.What does the author think of the safety problem of super intelligent machines?A.It will disappear with the development of AI.B.It will get worse with human interference.C.It will be solved but with difficulty.D.It will stay for a decade.E 七选五Money MattersParents should help their children understand money.16 So you may start talking about money when your child shows an interest in buying things,candy or toys,for example.1.The basic function of moneyBegin explaining the basic function of money by showing how people trade money for goods or-services.It is important to show your child how money is traded for the things he wants to have.If he wants to have a toy,give him the money and let him hand the money to the cashier (收银员).17 When your child grows a bit older and understands the basic function of money,you can start explaining more complex ways of using money.2.Money lessonsApproach money lessons with openness and honesty.18 If you must say no to a child's request to spend money,explain,"You have enough toy trucks for now." 0r,if the request is for many different things,say,"You have to make a choice between this toy and that toy."3.19Begin at the grocery store.Pick out two similar brands of a product — a name-brand butter and a generic (无商标产品),for example.You can show your child how to make choices between different brands of a product so that you can save money.20 If he chooses the cheaper brand,allow him to make another purchase with the money saved.Later,you may explain how the more expensive choice leaves less money for other purchases.A.Wise decisionsB.The value of moneyC.Permit the child to choose between them.D.Tell your child why he can — or cannot — have certain things.E.Ask yourself what things that cost money are most important to you.F.Talk about how the money bought the thing after you leave the toy store.G.The best time to teach a child anything about money is when he shows an interest.二完形填空(每小题2分,共40分)If you want to learn a new language¸the very first thing to think about is why.Do you need it for a 21 reason¸such as your job or your studies? 22 perhaps you're interested in the 23 ¸films or music of a different country and you know how much it will help to have a 24 of the language.Most people learn best using a variety of 25 ¸but traditional classes are an ideal(理想的) start for many people.They 26 an environment where you can practice under the 27 of someone who's good at the language.We all lead 28 lives and learning a language takes 29 .You will have more success if you study regularly¸so try to develop a 30 .It doesn't matter if you haven't got long.Becoming fluent in a language will take years¸but learning to get by takes 31 .Many people start learning a language and soon give up."I'm too 32 ¸"they say.Yes¸children do learn languages more 33 than adults¸but research has shown that you can learn a language at any 34 .And learning is good for the health of your brain¸too.I've also heard people 35 about the mistakes they make when 36 .Well¸relax and laugh about your mistakes 37 you're much less likely to make them again.Learning a new language is never 38 .But with some work and devotion¸you'll make progress.And you'll be 39 by the positive reaction of some people when you say just a few words in 40 own language.Good luck !21.A.technical B.political C.practical D.physical22.A.After B.So C.Though D.0r23.A.literature B.transport C.agriculture D.medicine24.A.view B.knowledge C.form D.database25.A.paintings B.regulations C.methods D.computers26.A.protect B.change C.respect D.provide27.A.control B.command C.guidance D.pressure28.A.busy B.happy C.simple D.normal29.A.courage B.time C.energy D.place30.A.theory B.business C.routine D.project31.A.some risks B.a lot less C.some notes D.a lot more32.A.old B.nervous C.weak D.tired33.A.closely B.quickly C.privately D.quietly34.A.age B.speed C.distance D.school35.A.worry B.hesitate C.think D.quarrel36.A.singing B.working C.bargaining D.learning37.A.if B.and C.but D.before38.A.tiresome B.hard C.interesting D.easy39.A.blamed B.amazed C.interrupted D.informed40.A.their B.his C.our D.Your三语篇填空(每小题1.5分,共15分)Mary will never forget the first time she saw him. He suddenly appeared in class one day,41 (wear) sun glasses. He walked in as if he 42 _ ( buy) the school. And the word quickly got around that he was from New York City.For some reason he sat beside Mary. Mary felt 43 (please), because there were many empty seats in the room. But she quickly realized that it wasn't her,it was probably the fact that she sat in 44 last row.45 he thought he could escape attention by sitting at the back,he was wrong. It might have made it a little 46 (hard) for everybody because it meant they had to turn around,but that didn't stop the kids in the class. 0f course whenever they turned to look at him,they had to look at Mary, 47 made her feel like a star.“Do you need those glasses for medical reasons?” the teacher asked. The new boy shook his head. "Then I'd appreciate it if you didn't wear them in class,I like to look at your eyes when I'm speaking to you. " The new boy looked at the teacher 48 a few seconds and all the other students wondered 49 _ the boy would do. Then he took 50 off, gave a big smile and said,"That's cool."四短文改错(共10分)Christine was just a girl in one of my classes.I never knew much about her except for that she was strange.She didn't talk many.Her hair was black and purple,and she worn black sports shoes and a black sweater,although in the summer.She was,in fact,rather attractively,and she never seemed care what the rest of us thought about her.Like the rest of my classmate,I didn't really want to get closest to her.It was only when we did their chemistry project together that I begin to understand why Christine dressed the way she did.五. 书面表达(共......25..分)..假定你是李华¸你校英文报“外国文化”栏目拟刊登美国节日风俗和中学生生活的短文。
