2018年高三最新 高考模拟题精编详解试题七 精品
2018年高考物理全真模拟题(新课标Ⅰ卷)(3月)(第三练)(附精品解析)
⋯⋯Evaluation Only. Created with Aspose.PDF. Copyright 2002-2020 Aspose Pty Ltd. ⋯ ⋯⋯ ⋯ ⋯ ○ ⋯ ○2018 年高考理科综合(物理)全真模拟试卷(新课标Ⅰ卷)⋯ ⋯ ( 3 月份)(第三套) ⋯⋯第Ⅰ卷⋯⋯二、选择题: 此题共 8 小题, 每题6 分。
在每题给出的四个选项中, 第 14~18题只有一项切合题目要求, ⋯ ⋯线 线 ⋯ ⋯ 第 19~21题有多项切合题目要求。
所有选对的得 6 分,选对但不全的得 3 分,有选错的得 0 分。
A.电压表的示数为2 10 V ⋯ ⋯ B.电流表的示数为10 A 14.A 、B 两个物体在水平面上沿同向来线运动,它们的 v ﹣t 图象以下图.在 t=0时辰, B 在 A 的前面,两 ⋯ ⋯ 物体相距 7m ,B 物体做匀减速运动的加快度大小为2m/s2.则A 物体追上 B 物体所用时间是( ) C.电阻 R 的功率为10W⋯ ⋯D.电路中的电流在 1s 内方向改变50 次_○ ○_ 18.质量为m 的带电小球在 a 点水平射入竖直向上的匀强电场中,运动轨迹以下图,则正确的说法是 _ _⋯ ⋯_ _ _ _⋯ ⋯_ _ _⋯ ⋯:⋯ ⋯号A. 5 sB. sC. 7 sD. 8 s考 _订 订_ _15.以下图, A , B 两质点从同一点 O 分别以同样的水平速度 v 0 沿 x 轴正方向抛出, A 在竖直平面内运动,落_⋯ ⋯_地址为P 1;B 沿圆滑斜面运动,落地址为P 2,P 1 和 P 2 在同一水平面上,不计阻力,则以下说法正确的选项是 ( )_ A. 小球带正电 _⋯ ⋯_ _ B. 小球在 b 点的加快度大于在 a 点的加快度 _⋯ ⋯_C. 小球的电势能增大: ⋯ ⋯ 级D. 在相等的时间间隔内重力做的功相等○⋯⋯⋯⋯装⋯⋯⋯⋯○班_ __ __ __ __ __:名姓_ __ __ __ ___ _:校学○⋯⋯⋯⋯装⋯⋯⋯⋯○A. A、B的运动时间同样B. A、B沿x轴方向的位移同样C.A、B运动过程中的加快度大小同样D. A、B落地时速度大小同样16.用一个半球形容器和三个小球能够进行碰撞实验,已知容器内侧面圆滑,半径为R,三个质量分别为m1、m2、m3,两两的小球1、2、3,半径同样且可视为质点,自左向右挨次静置于容器底部的同向来线上且相互相互接触,若将质量为m,的球移至左边离容器底高h处无初速开释,以下图,各小球间的碰撞时间极短且碰1撞时无机械能损失,小球 1 与2、2 与3 碰后,球 1 停在0 点正下方,球 2 上涨的最大高度为R,球3 恰能9滑出容器,则三个小球的质量之比为19.以下图,一根轻弹簧下端固定,直立在水平面上.其正上方 A 地点有一只小球.小球从静止开始着落,不计阻力,在B 地点接触弹簧的上端,在C 地点小球所受弹力大小等于重力,在D 地点小球速度减小到零.小球降落阶段以下说法中正确的选项是A. 从A→C地点小球重力势能的减少大于小球动能的增添⋯⋯ B. 从A→D地点小球重力势能的减少大于弹簧弹性势能的增添⋯⋯ C. 在C 地点小球动能最大D. 在B 地点小球动能最大⋯⋯20.在半径为R的圆形地区内,存在垂直圆面的匀强磁场。
2018年高三最新 高考仿真试题(三)试卷及答案 精品
试卷类型:A2018年高考数学仿真试题(三)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分.共150分.考试时间120分钟.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.不等式(1+x )(1-|x |)>0的解集是A.{x |-1<x <1}B.{x |x <1}C.{x |x <-1或x >1=D.{x |x <1且x ≠-1=2.对一切实数x ,不等式x 2+a |x |+1≥0恒成立,则实数a 的取值范围是 A.(-∞,-2) B.[-2,+∞) C.[-2,2] D.[0,+∞)3.设O 为矩形ABCD 的边CD 上一点,以直线CD 为旋转轴,旋转这个矩形所得体积为V ,其中以OA 为母线的圆锥体积为4V,则以OB 为母线的圆锥的体积等于A.12V B. 9VC. 15VD. 4V4.设偶函数f (x )=log a |x -b |在(-∞,0)上递增,则f (a +1)与f (b +2)的大小关系是A.f (a +1)=f (b +2)B.f (a +1)>f (b +2)C.f (a +1)<f (b +2)D.不确定5.复数z 1、z 2在复平面上对应点分别是A 、B ,O 为坐标原点,若z 1=2(cos60°+i sin 60°)z 2,|z 2|=2,则△AOB 的面积为A.43B.23C.3D.26.如果二项式(xx 23-)n的展开式中第8项是含3x 的项,则自然数n 的值为 A.27 B.28 C.29 D.30 7.A 、B 、C 、D 、E ,5个人站成一排,A 与B 不相邻且A 不在两端的概率为 A.103B.53 C.101D.以上全不对8.把函数y =cos x -3sin x 的图象向左平移m 个单位(m >0)所得的图象关于y 轴对称,则m 的最小值是A.6π B.3π C.32π D.65π 9.已知抛物线C 1:y =2x 2与抛物线C 2关于直线y =-x 对称,则C 2的准线方程是 A.x =-81 B.x =21 C.x =81 D.x =-21 10.6人一个小组,其甲为组长,乙为副组长,从6人中任选4人排成一排,若当正、副组长都入选时,组长必须排在副组长的左边(可以不相邻),则所有不同排法种数是A.288B.276C.252D.7211.如图△ABD ≌△CBD ,则△ABD 为等腰三角形,∠BAD =∠BCD =90°,且面ABD ⊥面BCD ,则下列4个结论中,正确结论的序号是①AC ⊥BD ②△ACD 是等边三角形 ③AB 与面BCD 成60°角 ④AB 与CD 成60°角A.①②③B.①②④C.①③④D.②③④12.台风中心从A 地以每小时20千米的速度向东北方向移动,离台风中心30千米内的地区为危险区,城市B 在A 的正东40千米处,B 城市处于危险区内的时间为A.0.5小时B.1小时C.1.5小时D.2小时第Ⅱ卷 (非选择题 共90分)二、填空题(本大题共4小题,每小题4分,共16分.把答案填在题中横线上)13.在△ABC 中,3cos(B +C )+cos(2π+A )的取值范围是 . 14.函数f (x )= 13+-x ax (x ≠-1),若它的反函数是f -1(x )= xx -+13,则a = .15.S n 是等差数列{a n }的前n 项和,a 5=2,a n -4=30(n ≥5,n ∈N ),S n =336,则n 的值是 .16.给出四个命题:①两条异面直线m 、n ,若m ∥平面α,则n ∥平面α ②若平面α∥平面β,直线m ⊂α,则m ∥β ③平面α⊥平面β,α∩β=m ,若直线m ⊥直线n ,n ⊂β,则n ⊥α ④直线n ⊂平面α,直线m ⊂平面β,若n ∥β,m ∥α,则α∥β,其中正确的命题是 .三、解答题(本大题共6小题,共74 17.(本小题满分12分)解关于x 的方程:log a (x 2-x -2)=log a (x -a2)+1(a >0且a ≠1). 18.(本小题满分12分)已知等差数列{a n }中,a 2=8,S 10=185. (Ⅰ)求数列{a n }的通项公式a n ;(Ⅱ)若从数列{a n }中依次取出第2,4,8, (2),…项,按原来的顺序排成一个新数列{b n },试求{b n }的前n 项和A n .19.(本小题满分12分)在Rt △ABC 中,∠ACB =30°,∠B =90°,D 为AC 中点,E 为BD 的中点,AE 的延长线交BC 于F ,将△ABD 沿BD 折起,二面角A —BD —C 大小记为θ.(Ⅰ)求证:面AEF ⊥面BCD ; (Ⅱ)θ为何值时,AB ⊥CD . 20.(本小题满分12分)某公司取消福利分房和公费医疗,实行年薪制工资结构改革,该公司从2000年起每人的工资由三个项目并按下表规定实施如果公司现有5名职工,计划从明年起每年新招5(Ⅰ)若今年(2000年)算第一年,试把第n 年该公司付给职工工资总额y (万元)表示成年限n 的函数;(Ⅱ)试判断公司每年发给职工工资总额中,房屋补贴和医疗费的总和能否超过基础工资总额的20%? 21.(本小题满分12分)设双曲线C 的中心在原点,以抛物线y 2=23x -4的顶点为双曲线的右焦点,抛物线的准线为双曲线的右准线.(Ⅰ)试求双曲线C 的方程;(Ⅱ)设直线l:y =2x +1与双曲线C 交于A 、B 两点,求|AB |;(Ⅲ)对于直线y =kx +1,是否存在这样的实数k ,使直线l 与双曲线C 的交点A 、B 关于直线y =ax (a 为常数)对称,若存在,求出k 值;若不存在,请说明理由.22.(本小题满分14分)已知函数f (x )=ax 2+bx +c (a >b >c )的图象上有两点A (m ,f (m 1))、B (m 2,f (m 2)),满足f (1)=0且a 2+(f (m 1)+f (m 2))·a +f (m 1)·f (m 2)=0.(Ⅰ)求证:b ≥0;(Ⅱ)求证:f (x )的图象被x 轴所截得的线段长的取值范围是[2,3); (Ⅲ)问能否得出f (m 1+3)、f (m 2+3)中至少有一个为正数?请证明你的结论.2018年高考数学仿真试题(三)答案一、1.D 2.B 3.A 4.B 5.B 6.C 7.D 8.C9.C 10.A 11.B 12.B二、13.[-2,3] 14. 1 15. 21 16.②③ 三、17.解:原方程可化为log a (x 2-x -2)=log a (ax -2)2分 ⎩⎨⎧-=---⇔22022ax x x ax 4分 由②得x =a +1或x =0,当x =0时,原方程无意义,舍去.8分 当x =a +1由①得1022 a a a a ⇒⎩⎨⎧-+10分 ∴a >1时,原方程的解为x =a +112分18.解:(Ⅰ)设{a n }首项为a 1,公差为d ,则⎪⎩⎪⎨⎧=+=+1852)92(10811d a d a ,解得⎩⎨⎧==351d a∴a n =5+3(n -1),即a n =3n +26分(Ⅱ)设b 1=a 2,b 2=a 4,b 3=a 8, 则b n =a 2n =3×2n +2∴A n =(3×2+2)+(3×22+2)+…+(3×2n +2) =3×(2+22+…+2n )+2n=3×12)12(2--n +2n=6×2n -6+2n12分① ②19.(Ⅰ)证明:在Rt △ABC 中,∠C =30°,D 为AC 的中点,则△ABD 是等边三角形 又E 是BD 的中点,∵BD ⊥AE ,BD ⊥EF , 折起后,AE ∩EF =E ,∴BD ⊥面AEF ∵BD ⊂面BCD ,∴面AEF ⊥面BCD 6分(Ⅱ)解:过A 作AP ⊥面BCD 于P ,则P 在FE 的延长线上,设BP 与CD 相交于Q ,令AB =1,则△ABD 是边长为1的等边三角形,若AB ⊥CD ,则BQ ⊥CD 6331==⇒AE PE ,又AE =23∴折后有cos AEP =31=AE PE 由于∠AEF =θ就是二面角A —BD —C 的平面角, ∴当θ=π-arccos31时,AB ⊥CD12分20.解:(Ⅰ)第n 年共有5n 个职工,那么基础工资总额为5n (1+101)n(万元) 医疗费总额为5n ×0.16万元,房屋补贴为5×0.18+5×0.18×2+5×0.18×3+…+5×0.18×n =0.1×n (n +1)(万元)2分∴y =5n (1+101)n+0.1×n (n +1)+0.8n =n [5(1+101)n+0.1(n +1)+0.8](万元)6分(Ⅱ)5(1+101)n×20%-[0.1(n +1)+0.8]=(1+101)n -101(n +9)=101[10(1+101)n -(n +9)] ∵10(1+101)n =10(1+C n 1C n 1101+C n 21001+…)>10(1+10n)>10+n >n +9故房屋补贴和医疗费总和不会超过基础工资总额的20% 12分21.解:(Ⅰ)由抛物线y 2=23x -4,即y 2=23 (x -32),可知抛物线顶点为(32,0),准线方程为x =63.在双曲线C 中,中心在原点,右焦点(32,0),右准线x =63,∴⎪⎪⎪⎩⎪⎪⎪⎨⎧===⇒⎪⎪⎪⎩⎪⎪⎪⎨⎧+===33213363322222c b a b a c c a c ∴双曲线c 的方程3x 2-y 2=14分(Ⅱ)由0241)12(3131222222=++⇒=+-⇒⎩⎨⎧=-+=x x x x y x x y ∴|AB |=2108分(Ⅲ)假设存在实数k ,使A 、B 关于直线y =ax 对称,设A (x 1,y 1)、B (x 2,y 2),则⎪⎪⎩⎪⎪⎨⎧+⋅=+++=+-=222)(121212121x x a y y x x k y y ka 由022)3(1312222=---⇒⎩⎨⎧-=+=kx x k x y kx y ④ 由②③,有a (x 1+x 2)=k (x 1+x 2)+2 ⑤ 由④知:x 1+x 2=232kk-代入⑤ 整理得ak =3与①矛盾,故不存在实数k ,使A 、B 关于直线y =ax 对称. 12分 22.(Ⅰ)证明:因f (m 1),f (m 2)满足a 2+[f (m 1)+f (m 2)]a +f (m 1)f (m 2)=0 即[a +f (m 1)][a +f (m 2)]=0 ∴f (m 1)=-a 或f (m 2)=-a ,∴m 1或m 2是f (x )=-a 的一个实根, ∴Δ≥0即b 2≥4a (a +c ). ∵f (1)=0,∴a +b +c =0 且a >b >c ,∴a >0,c <0, ∴3a -c >0,∴b ≥0 5分 (Ⅱ)证明:设f (x )=ax 2+bx +c =0两根为x 1,x 2,则一个根为1,另一根为ac, 又∵a >0,c <0, ∴ac<0, ∵a >b >c 且b =-a -c ≥0, ∴a >-a -c >c ,∴-2<ac≤-1 2≤|x 1-x 2|<310分(Ⅲ)解:设f (x )=a (x -x 1)(x -x 2)=a (x -1)(x -ac ) 由已知f (m 1)=-a 或f (m 2)=-a 不妨设f (m 1)=-a 则a (m 1-1)(m 1-ac)=-a <0, ∴ac<m 1<1 ∴m 1+3>ac+3>1②③∴f(m1+3)>f(1)>0∴f(m1+3)>0 12分同理当f(m2)=-a时,有f(m2+3)>0,∴f(m2+3)或f(m1+3)中至少有一个为正数14分。
2018年普通高等学校招生全国统一考试仿真卷 理综(七)教师版
绝密★启用前2018年普通高等学校招生全国统一考试仿真卷理科综合能力测试(七)本试卷共16页,38题(含选考题)。
全卷满分300分。
考试用时150分钟。
★祝考试顺利★注意事项:1、答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。
用2B铅笔将答题卡上试卷类型A后的方框涂黑。
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写在试题卷、草稿纸和答题卡上的非答题区域均无效。
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5、考试结束后,请将本试题卷和答题卡一并上交。
可能用到的相对原子质量:H 1 C 12N 14O 16Na 23S 32 Cl 35.5K 39Fe 56 Pb 207第Ⅰ卷一、选择题:本大题共13小题,每小题6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. 关于细胞膜结构和功能的叙述,错误的是A. 脂质和蛋白质是组成细胞膜的主要物质B. 当细胞衰老时,其细胞膜的通透性会发生改变C. 甘油是极性分子,所以不能以自由扩散的方式通过细胞膜D. 细胞产生的激素与靶细胞膜上相应受体的结合可实现细胞间的信息传递【答案】C【解析】脂质和蛋白质是组成细胞膜的主要物质,此外还有少量的糖类,A正确;当细胞衰老时,其细胞膜的通透性会改变,物质运输功能降低,B正确;细胞膜主要由脂质和蛋白质组成,甘油是极性分子,能以自由扩散的方式通过细胞膜,C错误;细胞产生的激素与靶细胞膜上相应受体的结合可实现细胞间的信息传递,D正确。
2. 甲硫酸乙酯(EMS)能使鸟嘌呤变成7-乙基鸟嘌呤,后者不与胞嘧啶配对而与胸腺嘧啶配对。
普通高等学校2018届高三招生全国统一考试仿真卷(二)理综试题含答案
绝密 ★ 启用前2018年普通高等学校招生全国统一考试仿真卷理科综合能力测试(二)本试卷共18页,38题(含选考题)。
全卷满分300分。
考试用时150分钟。
★祝考试顺利★注意事项:1、答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。
用2B 铅笔将答题卡上试卷类型A 后的方框涂黑。
2、选择题的作答:每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑,写在试题卷、草稿纸和答题卡上的非答题区域均无效。
3、非选择题的作答:用签字笔直接答在答题卡上对应的答题区域内。
写在试题卷、草稿纸和答题卡上的非答题区域均无效。
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答案写在答题卡上对应的答题区域内,写在试题卷、草稿纸和答题卡上的非答题区域均无效。
5、考试结束后,请将本试题卷和答题卡一并上交。
可能用到的相对原子质量H 1 C 12 N 14 O 16 S 32 Cl 35.5 Ca 55 Zn 65第Ⅰ卷一、选择题:本大题共13小题,每小题6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.膜流是指由于膜泡运输,真核细胞生物膜在各个膜性细胞器及细胞膜之间的常态性转移。
下列有关叙述正确的是A .质壁分离和复原是膜流现象的例证B .蛋白质和RNA 进出细胞核的过程发生了膜流C .浆细胞分泌抗体的过程发生了膜流D .大肠杆菌和酵母菌都能发生膜流2.下列有关遗传信息的传递与表达的叙述,错误的是A .一个mRNA 上可以同时结合多个核糖体B .转录时DNA 双链解旋需要RNA 聚合酶C .复制产生的子代DNA 分子中只有一条链和亲代DNA 分子完全相同班级 姓名 准考证号 考场号 座位号D.RNA既能作为生物的遗传物质,还能在逆转录酶的作用下合成DNA3.地震发生时,灾民们面对的困难不仅仅是恶劣的自然环境,还有食物、饮用水的缺乏和各种疾病。
普通高校招生全国统一考试2018届高三仿真模拟卷(二)语文试题及答案(解析版) 人教版高三总复习
普通高校招生全国统一考试2018届高三仿真模拟卷(二)语文试题及答案(解析版)人教版高三总复习普通高校招生全国统一考试模拟试卷2018仿真模拟卷.语文(二)一、现代文阅读(35分)(一)论述类文本阅读(本题共3小题,9分)阅读下面的文章,完成文后各题。
作为藏文化中特有的绘画形式,传统唐卡大多作为一种用彩缎装裱的宗教卷轴画,供奉于寺庙和民居中,营造出宏大高深的佛教思想镜像,直抵信奉者的心灵;营造出一个充满神性力量的佛国世界,建立起现实世界与宗教信仰之间的关联。
唐卡的宗教性体现在其题材、内容上,也体现在绘制流程中。
对于画师而言,创作唐卡的过程本身也是一种修行的过程,纯洁且虔诚的信仰自始至终贯穿于作者的襟怀与笔端。
画师会在数月或数年的精耕细作中,追求极致的唐卡艺术之美;而高原特有的矿物和植物染料,更是赋予唐卡艺术历久弥新的效果,如佛教精神永绽光芒。
进入现代社会,社会环境的开放、文化交流的激荡、市场的兴起等,使唐卡艺术的流通和传承发生了变化----由寺庙供奉走向广阔的天地。
如今,在传统的寺院传承、流派传承、师徒传承等方式基础上,拓展出唐卡作坊、唐卡学校等多元化的流布方式,更广层面、更大力度促进了唐卡艺术的繁荣发展。
面对新的文化需求,唐卡艺术走出了两条方向不同的道路:一种继承传统,依旧以传统神本范畴的题材、内容、审美理念为主,技法愈加工细,色彩愈加艳丽,材质也更加新奇。
这类唐卡依然是寺庙和民居供奉的对象。
另一种是具有创新意义的“新唐卡”。
它从内容到表现手法,都体现着“从神本走向人本”的时代命题。
另外“新唐卡”还从古老绘画仪轨中挣脱出来,从而获得更为自由的表现空间,题材内容更接地气,审美也更加趋向社会大众的文化需求,在与时俱进的过程中为唐卡艺术掀开了新的篇章。
近年来,在国家政策的支持与推动下,唐卡艺术走出雪域高原被更多的人所认知,一些濒临失传的技艺也得到了保护和传承。
但这并不意味着唐卡艺术发展可以高枕无忧。
2018届全国高考复习综合模拟预测卷(七)英语试题(解析版)
2018届全国高考复习综合模拟预测卷(七)英语试题(解析版)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
第Ⅰ卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5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选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.How much should the man pay?A.$3.50. B.$4. C.$5.50.2.What does the woman mean?A.She is nervous too.B.She has prepared well.C.She is good at studying.3.What do we know about John?A.He is fond of watching news.B.He is mad at his teacher.C.He is into the lecture.4.What's the relationship between the speakers?A.Boss and employee.B.Teacher and student.C.Husband and wife.5.Why is the man going to New York?A.To work.B.To visit a friend.C.To have a vacation.第二节(共15小题;每小题1.5分,满分22.5分)听下面5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选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,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。
2018年黑龙江省高考模拟精编大考卷物理试卷(七)答案
由 共点 力 平衡 可 知 : 2. B㊀ 当 物 块受 到 的摩 擦 力沿 斜 面向 上 时 ,
m s i n3 7 ʎ - m c o s3 7 ʎ -F=0 g g μ
解得 : F=m s i n3 7 ʎ - m c o s3 7 ʎ g g μ
即 μ>t 选项 A 正确; 7. AD㊀ 由 题 意 知 μ m c o s θ>m s i nθ, a nθ, 0~ t g g 1 内, 物 块的 摩 擦 力 对 传 送 带 做 负 功 , 选项 B 错误; 合外力对 0~ t 2 内, 1 2, 2 物 块做 功 为 W = 1 m 由能量守 恒 定 律 知, v - m v 选项 C 错误; 2 2 2 1 与 传送 带 因物 块 多 输入 的 能量 之 和 , 选项 D 正 确 .
起 跳的 竖 直速 度 相 同 , 由 PG =m 得两 球 的 重 力 功 率 相 等 , v A正 g������ y
2 可得两球飞行时间 所 以两 球 的 速 度 变 化 率 相 同 , 由 h= 1 g B 错. t 2
2 π r 其 向 心 加 速 度 为 a=4 3. D㊀ 卫 星 运行 时 的 轨道 半 径为r=R+h, = T2 2( ( 4 π R+ h) π r 2 π R+ h) , , 选 项 A 错误 . 运 行 时 的 线 速 度 为 v=2 选 = T T T2
从x 6. C㊀ 负 点 电 荷 从 O 点 到 x2 位 置 做 减 速 运 动 , 2 位置到 O 点做加 速 度先 增 大再 减 小 , 又 增大 后 减 小 的 加 速 运 动 , 从 O 点 到 x3 位 置 做 匀 减速 运 动 , 选项 A㊁ 负点电荷从x 由动能 B错误; 2 位置到x 3 位 置, 定 理得q 则选 项 C 正确 ; 负 点 电 荷运 动 中 仅 有 电 场 力 做 功 , Ux2x3 =0, 动 能和 电 势能 之 和 一 定 , 在x 电 势 能 最 大, 选 x 2㊁ 3 位 置 的 动 能 最 小, 项 D 错误.
2018高三全真模拟卷数学卷参考答案
1 ,得 sin n, OS 2
2 3
3
∴ tan n, OS
2 2 3 1 3
2 2 .即二面角 N CM B 的正切值为 2 2 .
„„10 分
⑶由⑴⑵得 MB (1, 3,0) ,又 n ( 2 , 6 ,1) 为平面 CMN 的一个法向量, | n | 3 , ∴点 B 到平面 CMN 的距离 d 17.(本题满分 14 分) 1 解:设 BC=x 米(x>1) ,AC=y 米,则 AB=y- . 2 1 2 2 2 在△ABC 中,由余弦定理,得(y- ) =y +x -2xycos60. 2 1 4 所以 y= (x>1) . x- 1
1 2 1 13.答案: 2
14.答案: , 1
1,
二、解答题:本大题共 6 小题,共计 90 分.请把答案写在答题卡相应的位置上.解答时应 写出文字说明,证明过程或演算步骤.
-2南京清江花苑严老师
15.解:⑴由三角函数的定义知 tan
2 ( 4 3) 2 4 1 (3)
(当且仅当 t 4 ,即 b 4a 4c 时取“=” 10.答案: m 5 或 1 。
-1南京清江花苑严老师
解析:本题考查三角函数的图象与性质。 由 f( 故当 x
t ) f ( t ) 可知 x 是该函数的一条对称轴, 8 8 8
时,sin( x ) 1 或 1 。 又由 f ( ) 3 可得 m 5 或 1 。
x +y =1,„„① 因为点 A,B 在圆上,所以 x +y =1,„„②
2 1 2 1 2 2 2 2
由①×4-②,得(2x1+x2)(2x1-x2)=3.所以 2x1-x2= 3,解得 x1= 3 1 ,得 y1= . (以下同方法一) 2 2 (法三)如图,设 AB 中点为 T. 由 x1 = 1 3 则 TM=TA-MA= AB,OM= . 6 3
2018届普通高等学校高三招生全国统一考试模拟试题英语试题(解析版)
2018届普通高等学校高三招生全国统一考试模拟试题英语(三)注意事项:1.答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。
2.选择题的作答:每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑,写在试题卷、草稿纸和答题卡上的非答题区域均无效。
3.非选择题的作答:用签字笔直接答在答题卡上对应的答题区域内。
写在试题卷、草稿纸和答题卡上的非答题区域均无效。
4.考试结束后,请将本试题卷和答题卡一并上交。
第I 卷(选择题) 一、完形填空During the Nov. 11 shopping event, many people tend to buy more than they need because of salespromotions or just plain urge. But what normally ______ the shopping spree (疯狂购物) is not ______ butregret. That’s because many people just buy things to fill the ______ in their hearts, but accumulating thingsactually ______ the burden in their minds.The concept of Danshari may provide a(n)______ to the problem. Danshari was based on three Chinesecharacters, duan she li,______ refusal, disposal (清除) and separation. It promotes the idea of getting rid of ______ things and separating oneself from the drive to own ______ possessions. There are two basic rules that ______ whether you should keep something---the relationship between you and the item under ______as well as the timing. So before you ______ your payment password for something, ask yourself twoquestions: Do I ______ it now? Does it suit me?Danshari encourages you not only to ______ yourself things, but to give up the unreasonable desireassociated with owning them. Nowadays, people need to learn to ______ their daily lives. Buy only thenecessities and ______ items, regularly ______ things you don’t need any more, then you’ll get freedom in your heart.However, it doesn’t mean that you should ______ your desire and live a less interesting life. Instead,you should ______ yourself rather than material goods. Through ______ what to buy and what to get rid of,you can see a deeper reflection of yourself,______ learning to make wise decisions about more important things.1.A. prevents B. follows C. starts D. promotes2.A. expectation B. wealth C. satisfaction D. relief 3.A. emptiness B. needs C. silence D. space 4.A. measures B. covers C. relieves D. indicates 5.A. limit B. alternative C. solution D. introduction 6.A. meaning B. abolishing C. violating D. predicting 7.A. updated B. temporary C. used D. unnecessary 8.A. private B. material C. valuable D. popular 9.A. prove B. permit C. decide D. affect 10.A. guarantee B. consideration C. control D. discussion 11.A. change B. create C. provide D. enter 12.A. need B. try C. want D. match 13.A. deny B. prepare C. spare D. serve 14.A. fix B. risk C. enrich D. simplify 15.A. special B. cheap C. suitable D. optional 16.A. discover B. recycle C. update D. abandon 17.A. fuel B. identify C. kill D. balance 18.A. reflect on B. focus on C. give up D. cheer up 19.A. choosing B. avoiding C. comparing D. mentioning 20.A. rather B. otherwise C. therefore D. still 二、阅读理解 A The Grand Canyon(大峡谷)Helicopter Tour You'11 discover the natural beauty of the Grand Canyon as your helicopter flies to the west edge ,passing over Lake Las Vegas ,Lake Mead and the Hoover Dam .During the flight ,you can listen to a recorded introduction to the Grand Canyon and its surroundings via headphones .At noon ,you’11 land for an unforgettable champagne picnic ,3,200 feet below the edge .While you share a bottle of champagne ,your pilot and guide will be happy to answer any questions you may have .Your flight ends with a low-level pass over the famous Las Vegas Strip .On landing ,a comfortable car is waiting to bring you back to your hotel . Each helicopter carries a maximum of 6 people including your pilot .For a roomier experience ,upgrade your flight to an EC-130 helicopter which provides larger leg room and can accommodate more weight per seat .See Additional Info for details on weight restrictions .此卷只装订不密封 班级姓名准考证号考场号座位号Pricing Information●Services included:45-minute(approx)flight each way,hotel pickup and drop-off by 1imousine,1unch.●Our price is constantly updated.Click to check pricing & availability on your preferred travel date.Additional Information●The maximum weight per passenger to ride in an A-Star helicopter is 2751bs.If passengers weigh in between 2751bs and 3001bs,you will be required to upgrade to the EC-130.●Pickup is available from selected Las Vegas hotels.You must contact the local travel agency to fix your pickup time.●All flight times are approximate and might be influenced by weather conditions.Traveler ReviewThis is an absolute must do.The view of the Grand Canyon at his height was absolutely amazing! Our pilot was funny,knowledgeable and a great guide.All the staff from booking to check-in and helicopter departure were fantastic.I would recommend this tour to everyone.21.Where will you have your lunch during the tour?A. In the hotel.B. On the helicopter.C. In the Canyon.D. On the Las Vegas Strip.22.In what condition will you be advised to take an EC-130 flight?A. You weigh less than 2751bs.B. You travel with over 6 people.C. You want to spend less money.D. You want to travel more comfortably.23.What should you do to be picked up from the hotel?A. Turn to your guide.B. Call the travel agency.C. Book in advance.D. Pay an extra charge.24.What’s the purpose of the last part of the text?A. To praise the pilot and staff.B. To describe the view of the tour.C. To encourage potential consumers.D. To introduce the writer of the review.BIt was with heavy hearts that my son and I worked to prepare his car for a milestone journey—the day he moved across the country after twenty years of living under my roof.Our work went slowly into the afternoon.The Sunday baseball game came on.Our hometown Cardinals were playing the Atlanta Braves.I overheard bits of the TV broadcast—Atlanta took a two-run lead as we were packing the trunk.After that I became absorbed in glum thoughts about his departure and forgot about the game.Suddenly I heard the door open.“Dad,”he said,“let’s watch the game.They’re only down by a run.”His red-colored eyes instantly told me that he,too,found this to be difficult and wanted to share one last father-son moment.Without hesitation I led the way to the TV set.There,we found the Cards losing 3—1.“Oh,”he said,“they’re down two runs.”His voice cracked with do ubt.“I thought they were coming back.”“That’s fine,”I said,wanting so much to string this moment.“Let’s watch anyway.”The Cards got to bat last.First a single,and then another.Suddenly the game became very interesting.When David Eckstein parked the third pitch(投球)into the seats,we were transformed,jumping up and down.That’s when the magic moment came.The sadness of that day was replaced by the exciting baseball game,something we had done many times together before.Then he left.It was a sad day when I helped my son pack and get ready to move away to college.But this moment of joy mixed with sadness made the day,the trip and our life seem so right.25.What does the underlined word“glum”in Paragraph 2 probably mean?A. Anxious.B. Curious.C. Hopeful.D. Upset.26.What brought joy to the author?A. The victory of Atlanta.B. The work done for his son.C. The time spent with his son.D. The memory of the past time.27.Why did the author’s son leave home?A. To work.B. To study.C. To play a game.D. To go on a vacation.CMany people feel stressed out about buying and giving gifts around holidays.But have the holidays become too materialistic and more about the gifts than the feelings behind them?Throughout the world,many cultures mark holidays with gifts and food.Holiday traditions bring people together and allow us to feel a part of family and community.The gifts and food that we share are all about expressing a sense of appreciation and joy.The gifts of a few generations ago were probably more common and homemade.Even the people who could afford expensive presents probably didn’t do as much buying and spending as we do today.But with our culture growing more commercial,sometimes the original meaning behind the tradition gets lost.Not only is the pressure on spending money on the right present,but many people also find that when gifts become the focus of a holiday,it puts too much emphasis on receiving.It’s too easy to have high expectations of what’s in that beautifully wrapped box—and that can set anyone up for disappointment.No wonder we often hear about people having the“holiday blues”—feeling sad or empty.Not all people think the holidays are too materialistic,of course.Most appreciate the traditional aspects of the holidays.And some love shopping and are just fine with a11 the giving and receiving.But if you’re feeling a little empty about the holidays,what can you do? One key to a relaxing and meaningful holiday is finding what works best for you,both in terms of gift giving and other holiday traditions.Putting some thought into what the holidays mean to you and then focusing your energies on those aspects that leave you feeling most satisfied can help you let go of the stuff that may be stressing you out.28.What can we learn about the holiday gifts generations ago?A. They were valueless.B. They were highly valued.C. They were given little attention.D. They were more about expressing feelings.29.What is the result of focusing too much on receiving?A. Receivers are often disappointed.B. Gifts become the focus of holidays.C. Our culture grows more commercial.D. Much more money was spent on gifts.30.According to the text,how can we make holidays more meaningful?A. Avoiding giving and receiving gifts.B. Figuring out your real expectations.C. Doing some shopping in the holidays.D. Putting more thought into the gifts to give.31.What can be the best title for the text?A. The Changes in Giving GiftsB. What Stresses You out on Holidays?C. Are the Holidays Too Materialistic?D. The Development of Holiday TraditionsDAsking a patient to hum(哼唱)piano tunes and play fin instrument while undergoing brain surgery(手术)may sound like a strange request from a doctor.However,that is exactly what a team of brain specialists,led by Pilcher,requested Dan Fabbio to do.In 2015,the then 25-year-old musician was diagnosed with a brain tumor(肿瘤),which was located in the part of the brain known to be active when people listen to and make music.“Removing a tumor from the brain can have significant consequences depending on its location,”Pilcher says.“Both the tumor and the operation can damage tissue and affect communication between different parts of the brain.”Fabbio,therefore,feared the surgery would cause him to lose his musical ability.To prevent that from happening,Pilcher and his colleague designed many tests,including asking Fabbio to listen to piano tunes and hum back during MRI scans.This enabled the physicians to locate the area that is vital for music and language processing and create a 3-D map of Fabbio’s brain.Despite the great starting point,it was not a perfect way to prevent possible damage to the.The only way was to keep the patient awake and ask him to hum piano tunes during the surgery so that the surgeons could identify the areas to avoid.While the surgery went smoothly,the real test came when Fabbio was asked to play a song on his saxophone.The tunehad been simplified to ensure that it would not require too much strength and cause harm to the stitches(缝线)in the brain.He played it faultlessly,and when he finished,the entire operating room erupted in applause.The researchers say that a year after the groundbreaking surgery,the young musician can once again hear tunes in everything—even his electric toothbrush.32.What can we infer from P ilcher’s words in Paragraph 2?A. Fabbio’s brain was seriously damaged.B. The surgery would be a huge challenge.C. Fabbio’s brain parts failed to communicate.D. The surgery had to be performed immediately.33.What’s the major difficulty in Fabbio’s surg ery?A. To keep his brain active.B. To help him overcome fear.C. To protect his musical ability.D. To enable him to play an instrument.34.What does the underlined word“it”in Paragraph 4 refer to?A. Creating a 3-D map of Fabbio’s brain.B. Removing the tumor from Fabbio’s brain.C. Keeping Fabbio awake during the surgery.D. Listening to piano tunes during MRI scans.35.Why was Fabbio requested to hum piano tunes during the surgery?A. To save his strength.B. To check the surgery result.C. To make the stitches work easier.D. To locate the vital area for music.三、七选五Gratitude(感恩)is a social feeling.Many people see it as relationship—strengthening because it requires us to see how we’ve been supported and recognized by other people.First,it’s belief o f goodness.We are convinced that there are good things in the world,gifts and benefits we’ve received.The second part of gratitude is figuring out where that goodness comes from.36.It doesn’t come from anything we necessarily did ourselves.Instead,we acknowledge that other people gave us many gifts to help us achieve the goodness in our lives.37.Of course,there are various important reasons.Here are some of them.Gratitude allows us to celebrate the present.38.We notice the positives more,and that enlarge the pleasures you get from life.Instead of adapting to goodness,we celebrate goodness.Gratitude blocks negative feelings.You cannot feel envious and grateful at the same time.39.If you’re grateful,you can’t hate someone for having something that you don’t.Those are very different ways of connecting to the world,and sure enough,research has suggested that people who have high levels of gratitude have low levels of negative feelings.40.That’s because when you’re grateful,you have the sense that someone else has provided for your happiness.You notice a network of relationships of people think it’s worthwhile to help you get to where you are right now.Realizing someone has seen the value in you transforms the way you see yourself.A.They’re contradictory feelings.B.It strengthens positive feelings.C.Gratitude heightens your sense of self-worth.D.Most of the time,it makes you feel confused.E.Gratitude allows us to participate more in life.F.So why gratitude has such effects on people’s lives?G.We recognize the sources of it as being outside of ourselves.第II卷(非选择题)四、短文改错41.假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。
2018年高考模拟试卷语文试题与答案
2018年高考模拟试卷语文试题一、现代文阅读(35 分)(一)论述类文本阅读(本题共 3 小题,9 分)阅读下面的文字,完成 1~3 题。
中国古代关于良法善治的追求,大致可以概括为几个方面:以礼法为良法善治之法,以中道为良法善治之道,以德政为良法善治之政,以乡治为良法善治之基,以刑罚为良法善治之剑。
而“中道”则一以贯之于其他几方面之中,成为传统中华法系的“法统”。
传统中华法系中的“中道”可以从三个方面来理解。
一是“中和”。
礼之用,和为贵。
“和”是“中道”的基本涵义。
和谐、和合、和衷共济、和而不同,都是“中和”的衍生词。
孔子说:“君子和而不同,小人同而不和。
”儒家将自然、社会与人看成一个相互联系、生生不息的大系统,“中和”便是这个系统存在发展的基本条件,也是一种基本状态。
人与人之间、家与家之间、国家之间、民族之间,乃至人与自然之间、天人之间,都是和为贵。
这种观念深深地渗入到中国古代法律文化之中。
对于政出多门、朝令夕改、立法偏私等等,古人将其斥为恶法、败法、非法之法,皆因这些法背离了中和。
法是一定社会关系的调节器、稳定器,它所维护的是社会关系的平衡、稳定。
稳定性是法的基本属性之一。
“中和”之道求统合、求和谐、求稳定的价值取向正与法的这一属性和功能相契合。
二是“中正”。
中,含有适当、适度、公平、准确、不轻不重、不偏不倚等内涵。
正,意为端正、公正、合规矩。
程子云:“不偏之谓中,不易之谓庸,中者,天下之正道;庸者,天下之定理。
”可见,中道即是正道。
中正而不偏颇是中道的又一基本义,其核心是追求公平、正义。
这也正是法的基本价值和属性。
孔子主张博施济众、忠恕爱人、立人达人,反对聚敛和不教而杀;认为治国理民重在导德齐礼、宽严相济;要求统治者“使民以时”,做到“惠而不费,劳而不怨,欲而不贪,泰而不骄,威而不猛”;提出“政者,正也”,强调执政者首先要正己,言行合规范,秉公办事。
从这些主张中可以看出,他所追求的正是“天下有道”,“有道”,即有仁道,仁道也就是“正道”,亦即“中道”,体现了公平、正义的价值。
江苏省高考2018年高三招生考试20套模拟测试 英语试题七 含解析
试题习题、尽在百度江苏省普通高等学校招生考试高三模拟测试卷(七)英语本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分.满分120分,考试时间120分钟.第Ⅰ卷(选择题共85分)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选项,并标在试卷的相应位置.听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题.每段对话仅读一遍.()1. What has been fixed according to the woman?A. The dates.B. The schedule.C. Optional books.()2. How does the woman sound?A. Excited.B. Relaxed.C. Worried.()3. How many trips does the school organize on a weekday afternoon?A. 2.B. 3.C. 5.()4. When does the man usually go off work?A. At 4:30.B. At 5 o'clock.C. At 8 o'clock.()5. Where is the woman?A. In a soap factory.B. In her house.C. At an information desk.第二节(共15小题;每小题1分,满分15分)听下面5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选项,并标在试卷的相应位置.听每段对话或独白前,你将有时间阅读各个小题,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. What did the woman forget to do?A. To turn off the stove.B. To wash the pan after using it.C. To leave some breakfast for the man.()7. Who might Maria be?仔细审题、认真作答.试题习题、尽在百度A. The man's girlfriend.B. The couple's neighbor.C. The woman's roommate.听第7段材料,回答第8至10题.()8. Why won't Mr. Stone come to the clinic tomorrow?A. He can't spare the time.B. The clinic will be closed.C. Dr. Milton won't come to work.()9. When is the clinic open in a week?A. From Monday to Friday.B. On weekdays except Thursday.C. During the whole week.()10. When will Mr. Stone finally come to the clinic?A. 5:20 p.m. Wednesday.B. 6:15 p.m. Wednesday.C. 6:15 p.m. Thursday. 听第8段材料,回答第11至13题.()11. What was the woman doing when her husband complained?A. Sewing a tablecloth.B. Getting rid of the smoke.C. Trying a newly-bought dress.()12. Why did the man lose his temper?A. He was tired of his daily life.B. His wife didn't allow him to smoke.C. He met with some difficulties in his work.()13. Why did the couple decide to try Italian foot at last?A. The advertisement put the husband in the mood.B. The food in the restaurant was inexpensive.C. The husband had borrowed some money.听第9段材料,回答第14至16题.()14. Who is to blame for Buster's missing?A. Lily.B. Ben.C. Johnson.()15. What does Buster often do?A. Walk with Lily to school.B. Chase Johnson in the yard.C. Wait for the man in the park.()16. What has the woman been doing?A. Telling him a story about her dog.B. Asking the man to give up.C. Comforting the man.仔细审题、认真作答.试题习题、尽在百度听第10段材料,回答第17至20题.()17. In what way was the bear dangerous?A. It was following people during the day.B. It often attacked farm animals.C. It had killed several people.()18. How many people carried out the robbery in Brussels?A. Two.B. Three.C. Eight.()19. What is TRUE about the robbers?A. They shot fifty people.B. They stole some diamonds.C. They knew an official at the airport.()20. What will happen to the snakes on the island of Guam?A. They will be poisoned to death.B. They will be killed by power lines.C. They will be used for scientific tests.第二部分:英语基础知识运用(共两节,满分35分)第一节:单项填空(共15小题;每小题1分,满分15分)请认真阅读下面各题,从题中所给的A、B、C、D四个选项中,选出最佳选项.()21. It is important for parents to remain ________ in educating their children asforbidding a thing one day and excusing it the next is not foundation for morality.A. conservativeB. conventionalC. contradictoryD. consistent()22. There is no doubt, from my point of view, ________ matters is not what happens to you, but what you remember and how you remember it.A. what thatB. that thatC. what ifD. that what()23. A Russian plane broke up in the air, ________ all 224 people on board which was believed ________ by a bomb planted by Islamic State.A. killing; to have been causedB. having killing; to have been causedC. killing; to be causedD. having killed; to have caused()24. The official statement of the Communist Party offered people a glimpse into howChina's leaders ________ the country's urban development, including the role public policy would 仔细审题、认真作答.试题习题、尽在百度play in guiding the trend.A. advocatedB. assessedC. anticipatedD. allocated()25. Four thousand seven hundred meters above sea level ________,its glaciers beingthe source of Asia's most important rivers.A. the Tibetan Plateau liesB. lies the Tibetan PlateauC. does the Tibetan Plateau lieD. lying the Tibetan Plateau()26. Scholars from the University of Kansas published the results of a decade-longstudy recently, suggesting that sending children to “pre-school”at the age of 4 comes too late to ________ educational drawbacks at home.A. account forB. answer forC. compensate forD. allow for()27. The WFP has launched a new app called ShareTheMeal, ________ potential,people believe, is enormous as it allows smartphone users to make donations with a simple tap on their phone.A. whoseB. thatC. whereD. which()28. Over 80 people were killed by gunmen inside the Bataclan Music Venue in Paris,which urged all the nations to ________ anti-terrorism movement.A. pick upB. follow upC. keep upD. hold up()29. So far, there has been no scientific consensus about ________ induces the risk ofeating GM food.A. what is it thatB. what it is thatC. it is whatD. what is it()30. —I hear that you've been shown the new scheme.—Oh, yes, but how to carry it out ________ at the meeting.A. didn't clarifyB. hasn't been clarifiedC. wasn't clarifiedD. hasn't clarified()31. Though born poor, Elvis Presley, king of rock and roll, became a huge success as a singer, whose story is really ________ of the American Dream.A. everythingB. nothingC. the oneD. one()32. There ________ more difficulties than they had expected, they ________ theproject ahead of schedule.A. were; couldn't finishB. being; couldn't have finished仔细审题、认真作答.试题习题、尽在百度C. have been; couldn't finishD. must have been; couldn't have finished()33. China and UK would strengthen the strategic partnership ________ climatescience and service so as to benefit people of the two countries.A. in view ofB. in face ofC. in favor ofD. in terms of()34. All the passengers, according to the new regulation, ________ before boarding the subway.A. will inspectB. are to be inspectedC. are going to inspectD. are about to be inspected()35. Uncle Joe is ________ in the family. Instead of getting a job, all he does is drinktoo much, gamble away any money he gets and chase after women.A. a black sheepB. a dark horseC. a good SamaritanD. a Scrooge第二节:完形填空(共20小题;每小题1分,满分20分)请认真阅读下面短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项.Kobe Bryant, a super basketball star, announced that he would retire at the end of the 2015-16 season via a letter poem. In the letter, he __36__ the moment he started rolling his dad's tubesocks and shooting __37__ game-winning shots, indicating his deep love for basketball.“This season is all I have left to give,”the 37-year-old wrote, “My heart can take the pounding. My mind can __38__ the grind(苦差) but my __39__ knows it's time to say goodbye.”As the only son of Joe Bryant, a former NBA player, Bryant was crazy about basketball andstarted __40__ in at 6, and his favorite team growing up was the Lakers. Bryant earned national__41__ during an amazing high school career and his basketball skills would have ensured __42__to any college he chose, but he decided to go directly into the NBA. He finally made it and was__43__ out of high school in 1996 and was then traded to the Lakers, for which he has played his entire career.__44__,Bryant played limited minutes, but as the season continued, he began to see somemore playing time and in his second season, he began to show more of his abilities as a talented young guard. The 1998-99 season __45__ Bryant's appearance as a premier guard in the league.__46__,even at an early stage of his career, sportswriters were comparing his skills to those of Michael Jordan and Magic Johnson.仔细审题、认真作答.试题习题、尽在百度There are always different interpretations of Bryant, making him the most __47__ figure in). He received criticism for getting his modern sports, a combination of hero and villain(反面人物__48__ in the games, completely neglecting his teammates; he was suspended __49__ deliberatelyAllwith 17 NBA breaking rules; he was even charged by the court with sex assault. __50__,Star selections, five NBA championships with the Lakers, two Olympic gold medals, Kobe has -him indeed, but the way he brought his fans __51__ memories. His best days are long __52__ approaches the game as well as life is always glamorous.We've always known, and __53__ are mentally prepared, that one day Kobe Bryant will notfarewell when It simply __55__ retirement note still caught us off guard. __54__. be Yet histime greats in basketball.) from one of the all-words are uttered(说出D. retold C. recorded B. recalled ()36. A. rememberedD. critical B. successful C. practical ()37. A. imaginaryD. handle B. operate C. assess ()38. A. treatD. teammatesB. soulC. body ()39. A. coachD. throwingC. participating ()40. A. involving B. divingD. recommendation C. realization )41. A. confirmation B. recognition (D. submission C. admission )42. A. permission B. occupation (D. employed C. substituted )43. A. drafted B. registered (D. Initially C. Basically )44. A. Previously B. Firstly (D. reflected C. marked B. symbolized ()45. A. representedD. ThenB. In factC. Therefore ()46. A. In additionD. authentic B. ridiculous C. controversial ()47. A. outstandingD. benefitC. manner ()48. A. way B. scoresD. in case of C. on account of )49. A. in response to B. in terms of (D. However C. Otherwise )50. A. Instead B. Besides (D. thrilling B. disappointing C. shocking ()51. A. boringD. beyondC. behind ()52. A. above B. beforeD. by and by C. now and then )53. A. more or less B. sooner or later (D. about C. there ()54. A. around B. hereD. counts()55. A. works B. hurts C. suffers仔细审题、认真作答.试题习题、尽在百度第三部分:阅读理解(共15小题;每小题2分,满分30分)请认真阅读下列短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项.A1. Cartridge exchange indicator2. Lid3. Funnel (漏斗)4. MAXTRA cartridge (MAXTRA 滤芯)5. Jug (水壶)Congratulations on your new BRITA water filter jug(滤水壶) with MAXTRA!Thank you for choosing BRITA quality for cleaner, clearer great tasting BRITA filtered water MAXTRA is the key for cleaner, clearer great tasting BRITA filtered waterMAXTRA filtration technology●Reduces limescale(水垢) and substances, that affect taste and odour.●Reduces for your wellbeing metals such as lead and copper that may be present in your water due to domestic water pipe.—due to the natural MicroporeFilter and powerful ProtectFilter.MAXTRA FlowControl: Perfect filtrationMAXTRA FlowControl ensures the perfect filtration time for best results through the ideal combination of the MAXTRA cartridge and the funnel of the BRITA water filter.Lifetime of the MAXTRA cartridgeMAXTRA cartridge life depends on local water quality, such as water hardness.To ensure perfect performance you should change your MAXTRA cartridge every four weeks,仔细审题、认真作答.试题习题、尽在百度in which case a cartridge exchange indicator may help you.Over 40 years of experience is a guarantee of qualityFor over 40 years, BRITA has stood for constant innovation and the highest quality in the development of water filter solutions. To justify high quality requirements at BRITA there areV SD guarantees strict internal and external quality controls. The independent institution TD certifies the quality of household water filters and cartridges on a regular basis. T theV Sfood grade quality of BRITA water filters and the MAXTRA cartridge according to German and European legislation.()56. All the following statements are true EXCEPT that ________.A. lead and copper are metals which harm our healthB. the life-span of a MAXTRA cartridge is one monthC. filtration time is related to the quality and taste of waterD. when the time for changing MAXTRA cartridge comes, you will find signals on the lid()57. Why can the new BRITA water filter jug provide cleaner, clearer tasting water?A. Because the MAXTRA filtration technology has been applied to the jug.B. Because BRITA company has strict internal and external quality controls.V SD is very famous in this field.C. Because the independent institution TD. Because BRITA company stands for constant innovation and highest quality.BA global survey of charitable giving conducted on 135 nations might give us a renewed senseof faith in humanity.The World Giving Index 2014 examined whether people donated money to a charity, volunteered their time to an organization or offered assistance to someone they didn't know who needed help. About 2.3 billion people worldwide reported helping a stranger over the course of one month last year, and over 1.4 billion donated money to charitable causes in 2013.It may not be surprising that the United States, one of the wealthiest countries in the world, came on top as the most generous nation. What is astonishing is that the accolade(荣誉)was shared with Myanmar, a nation ranking 151 spots lower than the US on the GDP per capita scale. In fact, the report found that a nation's economic prosperity doesn't automatically translate to generosity. Only five of the countries in this year's World Giving Index Top 20 are members of the 仔细审题、认真作答.试题习题、尽在百度G20, a forum of the world's largest economies. Less wealthy places like Sri Lanka and Trinidad and Tobago featured in the top 10.Other factors, like following a religious philosophy or responding to a natural disaster, were found to be major drivers of donations. Myanmar earned its top place mainly due to the fact that nearly all of the respondents, 91%, donated money to charity, a practice which is rooted in the country's Theravada Buddhist community. Another high-ranking country with a large population of the followers of that religion is Sri Lanka, which ranked ninth in the Index.Malaysia's high jump in the ranking, from 71st place to 7th, was attributed to the outpouringof the humanitarian aid after the destructive Typhoon Haiyan hit the neighboring Philippines.In Africa, Kenya has moved 18 places up this year, ranking 15th in the global index. It's themost charitable country in the continent, ahead of larger economies like Nigeria, which is in the 21st place, and South Africa with ranks 34th.Africans are also three times more likely to extend a helping hand to strangers than donate money or volunteer, which seems to show that they are more likely to show their generosity through community support than formalized channels.From a global perspective, the report concludes that the diverse nature of the top giving countries signals that regardless of geography or culture, people universally appear to respond to those in need.()58. Which of the following is NOT the factor contributing to people's generosity?A. A nation's economic prosperity.B. A religious philosophy.C. The response to a natural disaster.D. The requirement of the government.()59. The author may agree with the following versions EXCEPT that ________.A. Kenya is the most charitable country in the continent of AfricaB. Africans tend to show their generosity through formalized channelsC. Malaysia ranked higher this year due to its abundant aid to PhilippinesD. many people in Myanmar and Sri Lanka share the same religious philosophy()60. Which of the following shows the correct order of the countries in the WorldGiving Index?A. Kenya—Tobago—Nigeria—Myanmar.B. America—Tobago—Nigeria—Trinidad.C.Myanmar—Malaysia—Kenya—Nigeria.D.SriLanka—Kenya—South仔细审题、认真作答.试题习题、尽在百度Africa—Trinidad.()61. The passage mainly tells us that ________.A. America took the lead in charitable givingB. people have more faith in humanity nowadaysC. most people are willing to lend a hand when necessaryD. some poor countries are more likely to show their generosityCBiologists believe that love is fundamentally a biological rather than a cultural construct,because the capacity for love is found in all human cultures and similar behaviour is found insome other animals. In humans the purpose of all the desire is to focus attention on the raising of offspring. Children demand an unusual amount of parenting, and two parents are better than one. Love is a signal that both partners are committed, and makes it more likely that this commitmentwill continue as long as necessary for children to reach independence. But what does science haveto say about the notion of love at first sight?In recent years the ability to watch the brain in action has offered a wealth of insight into the mechanics of love. Researchers have shown that when a person falls in love, a dozen differentparts of the brain work together to release chemicals that trigger feelings of euphoria, bonding and excitement. It has also been shown that the unconditional love between a mother and a child is associated with activity in different regions of the brain from those associated with pair-bonding love.Passionate love is rooted in the reward circuitry of the brain—the same area that is activewhen humans feel a rush from cocaine. In fact, the desire, motivations and withdrawals involvedin love have a great deal in common with addiction. Its most intense forms tend to be associatedwith the early stages of a relationship, which then give way to a calmer attachment form of loveone feels with a long-term partner.What all this means is that one special person can become chemically rewarding to the brainof another. Love at first sight, then, is only possible if the mechanism for generating long-term attachment can be triggered quickly. There are signs that it can be. One line of evidence is that people are able to decide within a second how attractive they find another person. This decision appears to be related to facial attractiveness, although men may favour women with waist-to-仔细审题、认真作答.试题习题、尽在百度hip ratio of 0.7, no matter what their overall weight is. (This ratio may indicate a woman's reproductive health)Another piece of evidence comes from work by a psychologist at Ben-Gurion University,who found in a survey that a small percentage (11%) of people in long-term relationships said that they began with love at first sight. In other words, in some couples the initial favorable impressions of attractiveness triggered love which sustained a lengthy bond. It is also clear that some couples need to form their bonds over a longer period, and popular culture tells many tales of friends who become lovers.One might also assume that if a person is looking for a partner with traits that cannot be quantified instantly, such as compassion, intellect or a good sense of humour, then it would be hard to form a relationship on the basis of love at first sight. Those more concerned with visual appearances, though, might find this easier. So it appears that love at first sight exists, but is not a very common basis for long-term relationships.()62. When a person falls in love, ________.A. he feels as if he were addicted to cocaineB. he will be committed to the beloved as long as necessaryC. he will experience complex feelings brought on by different regions of his brainD. he will experience a calmer attachment form of love before he feels the extreme love()63. We can infer from the passage that ________.A. pair-bonding love comes from a long stable friendshipB. the mechanism for creating long-term attachment ensures love at first sightC. it is impossible for those ordinary-looking people to fall in love at first sightD. men may be attracted by a girl whose figure suggests her admirable reproductive capacity()64. The underlined word “traits”in the last paragraph probably means ________.A. characteristics of your behaviourB. something typical in your temperC. particular qualities in your personalityD. attitudes that show your moral standards()65. Which of the following may be the best title of the passage?A. The Stages of Passionate Love仔细审题、认真作答.试题习题、尽在百度B. The Science of Love at First SightC. The Biological Construct of Pair-Bonding LoveD. The Mechanism for Generating Long-Term LoveDErnest Hemingway was not only a commanding figure in 20th-century literature, but wasalso a_pack_rat. He saved even his old passports and used bullfight tickets, leaving behind one ofthe longest paper trails of any author.“Ernest Hemingway: Between Two Wars”,which opens on Friday at the Morgan Library& Museum, is the first major museum exhibition devoted to Hemingway and his work. The largest and most interesting section focuses on the '20s, Hemingway's Paris years, and reveals a writer we might have been in danger of forgetting:Hemingway_before_he_became_Hemingway.The exhibition does not fail to include pictures of the bearded, manly, Hem. He's shownposing with some kudu he has just shot in Africa and on the bridge of his beloved fishing boat, the Pilar, with Carlos Gutiérrez, the fisherman who became the model for “The Old Man and the Sea”. But the first photo the viewer sees is a big blowup of a handsome, clean-shaven, 19-year-old standing on crutches. This is from the summer of 1918, when Hemingway was recoveringfrom wounds at the Red Cross hospital in Milan and trying to turn his wartime experiences into fiction.The evidence at this exhibition suggests that, in the early days, he often wrote in pencil,mostly in cheap notebooks but sometimes on whatever paper came to hand. The first draft of theshort story “Soldier's Home”was written on sheets he appeared to have snatched from a telegraph office. The impression you get is of a young writer seized by inspiration and sometimes barreling ahead without an entirely clear sense of where he is going.F. Scott Fitzgerald (some of whose letters with Hemingway is also on view) famously urgedhim to cut the first two chapters of “The Sun Also Rises”,complaining about the “elephantine facetiousness”of the beginning, and Hemingway obliged, getting rid of a clunky opening thatnow seems almost “meta”. In 1929, in a nine-page penciled critique, Fitzgerald also suggested numerous revisions for “A Farewell to Arms”. Hemingway took some of these, but less graciously, and soon afterward his friendship with Fitzgerald came to an end.The papers at the Morgan show a Hemingway who is not always sure of himself. There are仔细审题、认真作答.试题习题、尽在百度running lists of stories he kept fiddling with, and there are lists and lists of possible titles,including the 45 he considered for “Farewell”and 47 different endings for the novel.In display case after display case, you see Hemingway during his Paris years inventing and reinventing himself, discovering as he goes along just what kind of writer he wants to be. In amoving 1925 letter to his parents, who refused to read “In Our Time”,his second story collection, he writes: “You see I'm trying in all my stories to get the feeling of the actual lifeacross —not just to describe life —or criticize it —but to actually make it alive. So that when you have read something by me you actually experience the thing. You can't do this withoutputting in the bad and the ugly as well as what is beautiful.”By the time the Second World War broke out, Hemingway had solidified into the iconicfigure we now remember: Papa. Even J. D. Salinger calls him this. And a blustery, cranky Hemingway appears in 1949 when aboard the Pilar he grabs an old fishing diary and begins scrawling an angry letter to Harold Ross, the editor of The New Yorker, complaining about Alfred Kazin's review of “Across the River and into the Trees”,not, in truth, a very good book. But, Hemingway, often drinking and depressed, didn't know it, his best work was behind him by then.()66. Which of the following is closest in meaning to the underlined words “a pack rat”in Paragraph 1?A. a person who doesn't waste anythingB. a person who cannot be relied onC. a person who likes to collect rubbishD. a person who enjoys collecting things()67. How many of Hemingway's works are mentioned in this passage?A. 4.B. 5.C. 6.D. 7.()68. We can conclude from the Morgan show that sometimes Hemingway was a person________.A. unconfident but full of inspirationsB. stubborn but full of enthusiasm about loveC. casual but full of heroismD. bad-tempered but full of strange habits()69. What does the writer truly mean by saying “Hemingway before he became Hemingway”?A. Hemingway wrote many masterpieces before he killed himself.B. Hemingway was once a war correspondent before he became a famous writer.C. Hemingway devoted all his strengths to writing before he won the Nobel Prize.仔细审题、认真作答.试题习题、尽在百度D. Hemingway kept exploring the world and adjusting himself before he became acommanding figure in literature.()70. According to the Morgan show, readers are likely to see ________ in Hemingway'sworks.①tough men who can't be defeated②anti-war fighters③the dark side of the worldas well as its beauty④love affairs between a man and a woman⑤the story of a family businessA. ①③B. ②④C. ①⑤D. ③⑤第Ⅱ卷(非选择题共35分)第四部分:任务型阅读(共10小题;每小题1分,满分10分)请认真阅读下面短文,并根据所读内容在文章后表格中的空格里填入一个最恰当的单词.注意:每个空格只填1个单词.Following one million middle-aged women in Britain for 10 years, a study finds that thewidely held view that happiness enhances health and longevity is unfounded.The results come from the so-called Million Women Study, which took on women aged 50to 69 from 1996 to 2001, and tracked them with questionnaires and official records of deaths and hospital admissions. The questionnaires asked how often the women felt happy, in control, relaxed and stressed, and also instructed them to rate their health and list ailments like high blood pressure, diabetes, depression or anxiety.When the answers were analyzed statistically, unhappiness and stress were not associatedwith an increased risk of death. It is not clear whether the conclusion applies to men.Professor Peto said particularly important data came from 500,000 women who reported thatthey were in good health, with no history of heart disease, cancer or stroke. A minority of these healthy women said they were stressed or unhappy, he said, but over the next decade they were no more likely to die than the women who were generally happy.“This finding refutes(驳斥)the large effects of unhappiness and stress on deathrate thatothers have claimed,”Dr. Peto said. Unhappiness itself may not affect health directly, but it cando harm in other ways, by driving people to suicide, alcoholism or other dangerous behaviors, he warned.This type of study, in which people involved depend on their self-assessments, is not仔细审题、认真作答.。
2018年普通高等学校招生全国统一考试高三数学仿真卷 理(七)
2018年普通高等学校招生全国统一考试高三数学仿真卷 理(七)本试题卷共14页,23题(含选考题)。
全卷满分150分。
考试用时120分钟。
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第Ⅰ卷一、选择题:本大题共12小题,每小题5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.[2018·孝义模拟]已知全集{}1,2,3,4U =,若{}1,3A =,{}3B =,则()()U UA B 痧等于( )A .{}1,2B .{}1,4C .{}2,3D .{}2,4【答案】D【解析】根据题意得到{} 2,4U A =ð,U B ð{}1,2,4=,故得到()()U UA B 痧{}2,4=.故答案为:D .2.[2018·海南二模]已知复数z 满足()34i 34i z +=-,z 的共轭复数,则z =( ) A .1 B .2C .3D .4【答案】A,1z ==,故选:A .3.[2018·大同一中]如果数据1x ,2x ,…,n x 的平均数为x ,方差为28,则152x +,252x +,…,52n x +的平均数和方差分别为( )A .2,8x B .252,8x +C .252,258x +⨯D .2,258x ⨯【答案】C2258⨯,故选C .4.[2018·龙岩期末]《九章算术》有这样一个问题:今有女子善织,日增等尺,七日共织二十八尺,第二日、第五日、第八日所织之和为十五尺,则第十日所织尺数为( ) A .9 B .10C .11D .12【答案】B【解析】设第一天织布1a 尺,从第二天起每天比第一天多织d 尺,由已知得:1111721284715a d a d a d a d +=⎧⎨+++++=⎩,解得11a =,1d =,∴第十日所织尺数为101910a a d =+=,故选B .5.[2018·宁德质检]已知0.41.9a =,0.4log 1.9b =, 1.90.4c =,则( ) A .a b c >>B .b c a >>C .a c b >>D .c a b >>【答案】C 【解析】0.401.9 1.91a =>=,0.40.4log 1.91log 0b =<=, 1.9000.40.41c <=<=,a cb ∴>>,故选C .6.[2018·江西联考]如图,在圆心角为直角的扇形OAB 区域中,M ,N 分别为OA ,OB 的中点,在M ,N 两点处各有一个通信基站,其信号的覆盖范围分别为以OA ,OB 为直径的圆,在扇形OAB 内随机取一点,则能够同时收到两个基站信号的概率是( )A B C D 【答案】B【解析】设C 为两端弧的交点,由OA 的中点为M ,则90CMO ∠=︒,半径为OA r =,所以扇形OAB2221112168OMC OC S S r r =-=π-△,两个圆的弧OC 围成的阴B .7.[2018·深圳中学]某几何体的三视图如图所示,则此几何体的体积为( )A .23B .1C .43D .83【答案】C【解析】该几何体为三棱锥,其直观图如图所示,体积114222323V ⎛⎫=⨯⨯⨯⨯= ⎪⎝⎭. 故选C .8.[2018·海南二模]已知函数()20172017log xf x =+)20173x x -+-+,则关于x的不等式()()126f x f x -+>的解集为( ) A .(),1-∞ B .()1,+∞ C .()1,2 D .()1,4【答案】A【解析】由题意易知:()201720172017log xxg x -=-+)x 为奇函数且在()-∞+∞,上单调递增,∴()()12336g x g x -+++>,即()() 21g x g x >-,∴21x x >-,∴1x <,∴不等式()()126f x f x -+>的解集为(),1-∞,故选:A .9.[2018·宿州一模]在如图所示的程序框图中,若输入的2s =,输出的2018s >,则判断框内可以填入的条件是( )开始输入x结束是否输出s 2s s =1i =1i i =+A .9i >B .10i ≤C .10i ≥D .11i ≥【答案】D【解析】输入2S =,1i =,242S ==;2i =,382S ==;当10i =,1122048S ==; 当10111i =+=,当11i ≥时,满足条件,退出循环,2048S =,故选D . 10.[2018·华师附中]已知关于x 在区间[)0,2π上有两个根12,x x m 的取值范围是( )A .()B .(⎤⎦C .⎡⎣D .[)0,1【答案】Dsin cos x x m +=[)0,2x ∈π的图像,由图可知,要使得方程在区间[)0,2π上有两个根1,x ,2x ,即01m <≤.故选D .11.[2018·阳春一中]已知()f x '是函数()f x 的导函数,且对任意的实数x 都有()()()e 23x f x x f x '=++(e 是自然对数的底数),()01f =,若不等式()0f x k -<的解集中恰有两个整数,则实数k 的取值范围是( )A B C D 【答案】C23G x x x c =++(),()()001G f ==,1c ∴=.()()231e x f x x x ∴=++,()()()()254e 14e x x f x x x x x ∴'=++=++.可得:4x =-时,函数()f x 取得极大值,1x =-时,函数()f x 取得极小值.()110e f -=-<,()01f =x →-∞时,()0f x →()0f x k -<的解集中恰有两个整数1-,2-.故k C . 12.[2018·佳木斯一中]已知椭圆2215y x +=与抛物线2x ay =有相同的焦点F ,O 为原点,点P 是抛物线准线上一动点,点A 4AF =,PA PO +的最小值为( )A .B .C .D .【答案】A【解析】椭圆2215y x +=,2514c ∴=-=,即2c =,则椭圆的焦点为()0,2±,不妨取焦点()0,2,抛物线2x ay =44a y ⎛⎫= ⎪⎝⎭,∴抛物线的焦点坐标为0,4a ⎛⎫⎪⎝⎭,椭圆2215y x +=与抛物线2x ay =有相同的焦点F ,24a∴=,即8a =,则抛物线方程为28x y =,准线方程为2y =-,4AF =,由抛物线的定义得:A ∴到准线的距离为4,24y +=,即A 点的纵坐标2y =,又点A 在抛物线上,4x ∴=±,不妨取点A 坐标()4,2A ,A 关于准线的对称点的坐标为()4,6B -PA PO PB PO OB +=+≥,即O ,P ,B 三点共线时,有最小值,最小值为OB ====,故选A .第Ⅱ卷本卷包括必考题和选考题两部分。
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说明:试时间:120分钟.第Ⅰ卷(选择题,共60分)一、本题共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个选项是符合题目要求的.1.(文)已知命题甲为x >0;命题乙为0||>x ,那么( )A .甲是乙的充分非必要条件B .甲是乙的必要非充分条件C .甲是乙的充要条件D .甲既不是乙的充分条件,也不是乙的必要条件 (理)已知两条直线1l :ax +by +c =0,直线2l :mx +ny +p =0,则an =bm 是直线21//l l 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 2.(文)下列函数中,周期为π的奇函数是( )A .x x y cos sin =B .x y 2sin =C .x y2tan = D .x x y 2cos 2sin +=(理)方程⎪⎩⎪⎨⎧=+=ty t x sin 6π(t 是参数,R t ∈)表示的曲线的对称轴的方程是( )A .)Z (3ππ2∈+=k k xB .)Z (3π2π∈+=k k x C .)Z (6ππ2∈-=k k x D .)Z (6ππ∈+=k k x3.在复平面中,已知点A (2,1),B (0,2),C (-2,1),O (0,0).给出下面的结论: ①直线OC 与直线BA 平行; ②;③; ④.其中正确结论的个数是( )A .1个B .2个C .3个D .4个4.(文)在一个锥体中,作平行于底面的截面,若这个截面面积与底面面积之比为1∶3,则锥体被截面所分成的两部分的体积之比为( )A .1∶3B .1∶9C .1∶33D .1∶)133(- (理)已知数列}{n a 的通项公式是1+=bn ana n ,其中a 、b 均为正常数,那么n a 与1+n a 的大小关系是( )A .1+>n n a aB .1+<n n a aC .1+=n n a aD .与n 的取值相关5.(文)将4张互不相同的彩色照片与3张互不相同的黑白照片排成一排,任何两张黑白照片都不相邻的不同排法的种数是( )A .3444A A B .3344A A C .3544C A D .3544A A(理)某农贸市场出售西红柿,当价格上涨时,供给量相应增加,而需求量相应减少,具体调查结果如下表:) A.(2.3,2.6)内 B .(2.4,2.6)内 C .(2.6,2.8)内 D .(2.8,2.9)内 6.椭圆122=+my x 的焦点在y 轴上,长轴长是短轴长的两倍,则m 的值为( )A .41 B .21C .2D .4 7.若曲线x x x f -=4)(在点P 处的切线平行于直线3x -y =0,则点P 的坐标为( )A .(1,3)B .(-1,3)C .(1,0)D .(-1,0)8.已知函数)(x f y =是R 上的偶函数,且在(-∞,]0上是减函数,若)2()(f a f ≥,则实数a 的取值范围是( )A .a ≤2B .a ≤-2或a ≥2C .a ≥-2D .-2≤a ≤2 9.如图,E 、F 分别是三棱锥P -ABC 的棱AP 、BC 的中点,PC =10, AB =6,EF =7,则异面直线AB 与PC 所成的角为( )A .60°B .45°C .0°D .120°10.圆心在抛物线)0(22>=y x y 上,并且与抛物线的准线及x 轴都相切的圆的方程是( )A .041222=---+y x y x B .01222=+-++y x y x C .01222=+--+y x y x D .041222=+--+y x y x11.双曲线的虚轴长为4,离心率26=e ,1F 、2F 分别是它的左、右焦点,若过1F 的直线与双曲线的右支交于A 、B 两点,且||AB 是||2AF 的等差中项,则||AB 等于( )A .28B .24C .22D .8.12.如图,在正方形ABCD 中,E 、F 、G 、H 是各边中点,O 是正方形中心,在A 、E 、B 、F 、C 、G 、D 、H 、O 这九个点中,以其中三个点为顶点作三角形,在这些三角形中,互不全等的三角形共有( )A .6个二、填空题:本题共4小题,共16分,把答案填在题中的横线上 13.若n S 是数列}{n a 的前n 项的和,2n S n =,则=++765a a a ________.14.有A 、B 、C 、D 、E 五名学生参加网页设计竞赛,决出了第一到第五的名次,A 、B 两位同学去问成绩,教师对A 说:“你没能得第一名”.又对B 说:“你得了第三名”.从这个问题分析,这五人的名次排列共有________种可能(用数字作答).15.若x 、y 满足⎪⎪⎩⎪⎪⎨⎧≥≥≤+≤+009382y x y x y x ,,,则y x z 2+=的最大值为________.16.若对n 个向量21a a ⋅,…,n a 存在n 个不全为零的实数1k ,2k ,…,n k ,使得2211=+++n n a k a k a k 成立,则称向量1a ,2a ,…,n a 为“线性相关”.依此规定,能说明=1a (1,2),=2a (1,-1),=3a (2,2)“线性相关”的实数1k ,2k ,3k 依次可以取________(写出一组数值即中,不必考虑所有情况).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.(12分)已知53)4πcos(=+x ,求xx x tan 1sin 22sin 2--的值.18.(12分)已知等比数列}{n a 的公比为q ,前n 项的和为n S ,且3S ,9S ,6S 成等差数列. (1)求3q 的值;(2)求证:2a ,8a ,5a 成等差数列.19.(12分)一个口袋中装有大小相同的2个白球和3个黑球. (1)从中摸出两个球,求两球恰好颜色不同的概率;(2)从中摸出一个球,放回后再摸出一个球,求两球恰好颜色不同的概率.注意:考生在(20甲)、(20乙)两题中选一题作答,如果两题都答,只以(19甲)计分. 20甲.(12分)如图,正三棱柱111C B A ABC -的底面边长为a ,点M 在边BC 上,△1AMC 是以点M 为直角顶点的等腰直角三角形. (1)求证点M 为边BC 的中点; (2)求点C 到平面1AMC 的距离; (3)求二面角C AC M --1的大小.20乙.(12分)如图,直三棱柱111C B A ABC -中,底面是以∠ABC 为直角的等腰直角三角形,AC =2a ,1BB =3a ,D 为11C A 的中点,E 为C B 1的中点. (1)求直线BE 与C A 1所成的角;(2)在线段1AA 上是否存在点F ,使CF ⊥平面DF B 1, 若存在,求出||;若不存在,说明理由.21.(12分)已知双曲线C :12222=-by a x (a >0,b >0),B 是右顶点,F 是右焦点,点A在x 轴正半轴上,且满足||、||、||成等比数列,过F 作双曲线C 在第一、第三象限的渐近线的垂线l ,垂足为P .(1)求证:⋅⋅=;(2)若l 与双曲线C 的左、右两支分别相交于点D 、E , 求双曲线C 的离心率e 的取值范围.22.(14分)设函数)1(2)(2<<++=b c c bx x x f ,0)1(=f ,且方程01)(=+x f 有实根. (1)证明:-3<c ≤-1且b ≥0;(2)若m 是方程01)(=+x f 的一个实根,判断)4(-m f 的正负并加以证明.参考答案1.(文)A (理)C 2.(文)A (理)B 3.C 4.(文)D (理)B 5.(文)D (理)C 6.A 7.C 8.B 9.A 10.D 11.A 12.C 13.33 14.18 15.716.只要写出-4c ,2c ,c (c ≠0)中一组即可,如-4,2,1等17.解析:x x x x x x x x x x 2sin sin cos )sin (cos sin 2cos tan 1sin 22sin 2=--=--⋅ )4π(cos 2)2π2cos(2+-=+-=x x 1+2592⨯-=2571=+.18.解析:(1)由3S ,9S ,6S 成等差数列,得9632S S S =+,若q =1,则1639a S S =+,19182a S =,由1a ≠0 得 9632S S S ≠+,与题意不符,所以q ≠1. 由9632S S S =+,得qq a q q a q q a --=--+--1)1(21)1(1)1(916131. 整理,得9632q q q =+,由q ≠0,1,得213-=q .(2)由(1)知:262841a q a a =⨯=,232521a q a a -=⨯=8528a a a a -=-,所以2a ,8a ,5a 成等差数列.19.解析:(1)记“摸出两个球,两球恰好颜色不同”为A ,摸出两个球共有方法1025=C 种,其中,两球一白一黑有61312=⋅C C 种. ∴ 53)(251312==C C C A P . (2)法一:记摸出一球,放回后再摸出一个球“两球恰好颜色不同”为B ,摸出一球得白球的概率为4.052=,摸出一球得黑球的概率为6.053=, ∴ P (B )=0.4×0.6+0.6+×0.4=0.48法二:“有放回摸两次,颜色不同”指“先白再黑”或“先黑再白”. ∴ 2512552332)(=⨯⨯+⨯=B P∴ “有放回摸两次,颜色不同”的概率为48.0)1()1(122=-=⋅⋅p p C P .20.解析:(甲)(1)∵ △1AMC 为以点M 为直角顶点的等腰直角三角形,∴M C AM 1⊥且M C AM 1=.∵ 正三棱柱111C B A ABC -, ∴ ⊥1CC 底面ABC .∴ M C 1在底面内的射影为CM ,AM ⊥CM .∵ 底面ABC 为边长为a 的正三角形, ∴ 点M 为BC 边的中点.(2)过点C 作CH ⊥1MC ,由(1)知AM ⊥M C 1且AM ⊥CM , ∴ AM ⊥平面CM C 1 ∵ CH 在平面CM C 1内, ∴ CH ⊥AM , ∴ CH ⊥平面AM C 1,由(1)知,a CM AM 23==,a CM 21=且BC CC ⊥1.∴ . ∴ . ∴ 点C 到平面1AMC 的距离为底面边长为a 66.(3)过点C 作CI ⊥1AC 于I ,连HI , ∵ CH ⊥平面AM C 1, ∴ HI 为CI 在平面AM C 1内的射影,∴ HI ⊥1AC ,∠CIH 是二面角C AC M --1的平面角.在直角三角形1ACC 中, ,CIH ∠sin CI CH =223366==a,∴ ∠CIH =45°, ∴ 二面角C AC M --1的大小为45°(乙)解:(1)以B 为原点,建立如图所示的空间直角坐标系.∵ AC =2a ,∠ABC =90°, ∴ a BC AB 2==. ∴ B (0,0,0),C (0,a 2,0),A (a 2,0,0), 1A (a 2,0,3a ),1C (0,a 2,3a ),1B (0,0,3a ).∴ a D 22(,a 22,)3a ,0(E ,a 22,)23a ,∴ a CA 2(1=,a 2-,)3a ,=BE 0(,a 22,)23.∴ a CA 13||1=,||a 211=, ∴ 222127290a a a BE CA =+-=⋅,∴ 1431437||cos 111==⋅CA CA θ. 故BE 与C A 1所成的角为1431437arccos . (2)假设存在点F ,要使CF ⊥平面DF B 1,只要B 1⊥且B 1⊥.不妨设AF =b ,则F (2,0,b ),a CF 2(=,a 2-,)b ,a F B 2(1=,0,)3a b -,a a a CC 224143221=-=aaa a M C CM C C CH 6623212211=⨯=⨯=a a a a a AC AC CC CI 33)22(222211=+⨯=⨯==B 1a 22(,a 22,)0, ∵ 0221=-=⋅a a B , ∴ B 1⊥恒成立.a b a b b a CF F B =⇔=-+=⋅0)3(221或a b 2=,故当a AF =||或2a 时,⊥CF 平面DF B 1.21.解析:(1)法一:l :)(c x bay --=, ⎪⎪⎩⎪⎪⎨⎧=--=,,x a b y c x ba y )( 解得c a P 2(,)c ab . ∵ ||、||、||成等比数列, ∴c a A 2(,)0 ∴ 0(=,)c ab - c a 2(=,)c ab ,cb 2(-=,)c ab , ∴ 222c b a OP PA -=⋅,222cb a FP PA -=⋅. ∴ FP PA OP PA ⋅⋅=法二:同上得ca P 2(,)c ab .∴ P A ⊥x 轴.0==-⋅⋅⋅OF PA FP PA OP PA . ∴ FP PA OP PA ⋅⋅=.(2)⎪⎩⎪⎨⎧=---=,,222222)(b a y a x b c x ba y ∴ 2222422)(b a c x b a x b =--. 即 0)(2)(22224242242=+-+-b a bc a cx b a x b a b ,∵ 0)(2422222421<-+-=⋅ba b b a b c a x x , ∴ 44a b >,即 22a b >,222a a c >-. ∴ 22>e ,即 2>e .22.解析:(1)210210)1(+-=⇒=++⇒=c b c b f . 又c <b <1,故313121-<<-⇒<+-<c c c 方程f (x )+1=0有实根, 即0122=+++c bx x 有实根,故△=0)1(442≥+-c b即30)1(4)1(2≥⇒≥+-+c c c 或1-≤c又c <b <1,得-3<c ≤-1,由21+-=c b 知0≥b .(2))1)(()1(2)(22--=++-=++=x c x c x c x c bx x x f ,01)(<-=m f .∴ c <m <1 ∴ c m c <-<-<-344.∴ 0)14)(4()4(>----=-m c m m f . ∴ )4(-m f 的符号为正.。