怀化市2015上期高三二模学生成绩(理科)
2015年5月高三模拟考成绩统计表
陈姝婧 吴浩 胡定都 方博杨 吴奕飞 楼海锋 徐子涵 方子林 刘纯如 丁子涵 王美佳 庄程 朱子薇 徐杰 蔡晨曦 王凌轩 张叙 潘乐扬 杨皓天 陈朝真 邹伊祺 曾柏瑞 胡振宇 余子毅 吴可歆 郑彦琪 祝翊 叶祥飞 陈傲雪 叶绍琛 周方杭 胡晨 徐一格 周思成 戴方文 胡学俊 王雨菲 陶晨希 陈凯乐 丁倩彬 商超群 朱禹臣 沈慧燕 徐文雨 黄豪杰 王荣 黄华 周依依 叶可为 金悦莹 金建刚
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132 121 132 131 138 145 132 134 121 130 144 133 139 135 122 136 121 124 143 138 143 127 125 143 136 133 128 126 143 118 132 129 133 139 139 135 129 144 136 144 124 126 130 114 136 125 139 121 129 130 132
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湖南省十三校2015届高三第二次联考 理科综合 Word版含答案
湖南省2015届高三十三校联考第二次考试理科综合试卷总分:300分时量:150分钟 2015年4月12日长郡中学;衡阳八中;永州四中;岳阳县一中;湘潭县一中;湘西州民中由麓山国际联合命题石门一中;澧县一中;郴州一中;益阳市一中;桃源县一中;株洲市二中可能用到的相对原子质量:Na-23 S-32 O-16 H-1 C-12 Mg-24 N-14一.选择题:本题包括13小题,每小题6分。
每小题只有一个选项符合题意。
1.下列叙述正确的是:A.在花生子叶薄片上滴加苏丹Ⅲ染液,若发现满视野都呈现橘黄色,可以滴1~2滴50%盐酸洗去浮色B.人体用于维持体温的热能来自于ATP水解释放的能量C.用透气的消毒纱布包扎伤口可抑制破伤风芽孢杆菌增殖D.紫色洋葱鳞片叶外表皮细胞发生质壁分离复原过程中,液泡里的色素渗透出细胞导致细胞液颜色变浅2.对下列图中有关的生物学意义的描述正确的是:A.甲图若在c点切断,则刺激b点后,a点会兴奋,肌肉会收缩B.乙图人体物质交换中体内细胞与B间不能直接进行物质交换,体内细胞与A之间才能直接进行物质交换C.丙图中,对向光弯曲的植物而言,若茎背光侧为B对应的生长素浓度,则茎向光侧不可能为C对应的浓度D.图丁中靶细胞裂解与效应T细胞内的溶酶体有关3.下图1表示胰岛素浓度与血糖的补充速率和消耗速率之间的关系,图2表示描述某种生命活动的模型。
下列相关分析错误的是:A.曲线甲表示血糖的补充速率,曲线乙表示血糖的消耗速率B.胰岛素作用于肝脏、肌肉等细胞导致曲线甲上升C.若E为调节中枢,a为血糖浓度下降,则b、c可分别代表胰高血糖素和肾上腺素分泌增加D.若E为神经中枢,a为渗透压升高,则b、c可分别代表抗利尿激素释放增加和产生渴觉4.如图表示在采用不同网目(网眼直径)和不同捕捞强度时对大西洋鳕鱼捕获量的影响。
下列相关分析中不正确的是:A.保持捕捞强度33%同时用大网目捕鱼更有利于保持鱼群的持续发展B.保持捕捞强度45%同时用中网目捕鱼使鱼群的年龄组成更接近稳定型C.持久保持捕捞强度45%会导致鳕鱼的种群数量不断减小D.调查鳕鱼的种群密度可以采用标志重捕法5、下列关于细胞的分子组成的说法不正确的是:A.动物细胞膜表面除糖蛋白外还有糖类和脂质分子结合成的糖脂B.生物细胞内吸能反应一般与ATP水解的反应联系C.核苷酸、DNA、RNA和蛋白质可以作为鉴定不同生物是否为同一物种的辅助手段D.1摩尔ATP水解成ADP时所释放的能量多达30.54KJ6.科学家用黄色大鼠与黑色大鼠进行杂交实验,结果如下图。
湖南省怀化市高三理综(物理部分)第二次模拟考试试题(含解析)
图1 2015年怀化市高三第二次模拟考试理科综合能力测试本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
第Ⅰ卷 1 页至5 页,第Ⅱ卷 6页至16 页,共300分。
1.考生注意:答题前,考生务必将自己的姓名、准考证号涂写在答题卡上。
考生要认真核对答题卡上粘贴的条形码的“准考证号、姓名、考试科目”与本人的准考证号、姓名是否一致。
2.第I 卷每小题选出答案后,用2B 铅笔把答题纸上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其它答案标号。
第II 卷用黑色字迹的签字笔或钢笔分别填写在试卷答题纸规定的位置上。
在试题卷上作答,答案无效。
3.考试结束后,监考人员将试题卷、答题卡一并收回。
第Ⅰ卷(选择题 共126分)本卷共21小题,每小题6分,共126分以下数据可供解题时参考:可能用到的相对原子质量H-1 C-12 N-14 O-16 Na-23 Cl-35.5二、选择题:本题共8小题,每小题6分。
在每小题给出的四个选项中,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求。
全部选对的得6分,选对但不全的得3分,有选错的得0分。
14.在人类对物质运动规律的认识过程中,许多物理学家大胆猜想、勇于质疑,取得了辉煌的成就,下列有关科学家及他们的贡献描述中正确的是A .安培发现了电流的热效应规律B .奥斯特由环形电流和条形磁铁磁场的相似性,提出分子电流假说,解释了磁现象电本质C .开普勒潜心研究第谷的天文观测数据,提出行星绕太阳做匀速圆周运动D .伽利略在对自由落体运动研究中,对斜面滚球研究,测出小球滚下的位移正比于时间的平方,并把结论外推到斜面倾角为90°的情况,推翻了亚里士多德的落体观点【答案】D【命题立意】本题旨在考查物理学史【解析】电流的热效应规律是焦耳发现的,A 错误;安培提出分子电流假说,解释了磁现象电本质,B 错误;哥白尼提出行星绕太阳做匀速圆周运动,C 错误。
【真题】15年湖南省怀化市高三(上)数学期中试卷含答案(理科)
2014-2015学年湖南省怀化市高三(上)期中数学试卷(理科)一、选择题:本大题共10小题,每小题5分,共计50分,在每小题给出的四个选项中,只有一项符合题目要求,请把正确答案的代号填在答题卡上. 1.(5分)已知全集U={0,1,2,3,4,5}集合A={1,2,3,5},B={2,4},则(∁U A)∪B为()A.{0,2,4}B.{2,3,5}C.{1,2,4}D.{0,2,3,5}2.(5分)设0<a<b<1,则下列不等式成立的是()A.a3>b3B.C.a b>1 D.lg(b﹣a)<03.(5分)已知向量=(3,1),=(x,﹣2),=(0,2),若⊥(﹣),则实数x的值为()A.B.C.D.4.(5分)运行如图的程序框图,则输出s的结果是()A.B.C.D.5.(5分)函数f(x)=x+sinx(x∈R)()A.是偶函数,且在(﹣∞,+∞)上是减函数B.是偶函数,且在(﹣∞,+∞)上是增函数C.是奇函数,且在(﹣∞,+∞)上是减函数D.是奇函数,且在(﹣∞,+∞)上是增函数6.(5分)由下列条件解△ABC,其中有两解的是()A.b=20,A=45°,C=80°B.a=30,c=28,B=60°C.a=12,c=15,A=120° D.a=14,c=16,A=45°7.(5分)从装有2个黄球和2个蓝球的口袋内任取2个球,则恰有一个黄球的概率是()A.B.C.D.8.(5分)方程(x2+y2﹣4)=0的曲线形状是()A.B.C.D.9.(5分)函数f(x)=2x﹣﹣m的一个零点在区间(1,3)内,则实数m的取值范围是()A.(﹣1,7)B.(0,5) C.(﹣7,1)D.(1,5)10.(5分)已知定义域为(0,+∞)的单调函数f(x),若对任意的x∈(0,+∞),都有,则方程f(x)=2﹣x3的解的个数是()A.0 B.1 C.2 D.3二、填空题:本大题共5小题,每小题5分,共25分.把答案填在答题卡上的相应横线上.11.(5分)已知数列{a n}满足a1=2,a n+1=(n∈N*),则a3的值为.12.(5分)(文科)已知α∈(,π),sinα=,则tan=.13.(5分)已知函数f(x)=,则f(x)的定义域为.14.(5分)已知一个正三棱柱的所有棱长均等于2,它的俯视图是一个边长为2的正三角形,那么它的侧(左)视图面积的最小值是.15.(5分)已知集合M={x|mx+1﹣=0,x∈R},若M=∅,则实数m的取值范围是.三、解答题:本大题共6小题,共75分.解答应写出文字说明、证明过程或演算步骤.16.(12分)函数f(x)=Asin(ωx+φ)部分图象如图所示.(Ⅰ)求f(x)的最小正周期及解析式;(Ⅱ)设g(x)=f(x)﹣cos2x,求函数g(x)在区间上的最大值和最小值.17.(12分)设p:|4x﹣3|≤1;q:x2﹣(2a+1)x+a(a+1)≤0.若¬p是¬q 的必要而不充分条件,求实数a的取值范围.18.(12分)如图,在四棱锥S﹣ABCD中,底面ABCD是正方形,SA⊥底面ABCD,SA=AB,点M是SD的中点,AN⊥SC且交SC于点N.(1)求证:平面SAC⊥平面AMN;(2)求二面角D﹣AC﹣M的余弦值.19.(13分)设等差数列{a n}的前n项和为S n,且a2=8,S4=40.数列{b n}的前n 项和为T n,且T n﹣2b n+3=0,n∈N*.(Ⅰ)求数列{a n},{b n}的通项公式;(Ⅱ)设c n=,求数列{c n}的前n项和P n.20.(13分)在平面直角坐标系xOy中,O为坐标原点,以O为圆心的圆与直线x﹣y﹣4=0相切.(Ⅰ)求圆O的方程;(Ⅱ)若直线l:y=kx+3与圆C交于A,B两点,在圆C上是否存在一点M,使得=+,若存在,求出此时直线l的斜率;若不存在,说明理由.21.(13分)已知函数f(x)=a x+x2﹣xlna(a>0,a≠1).(1)求函数f(x)在点(0,f(0))处的切线方程;(2)求函数f(x)单调增区间;(3)若存在x1,x2∈[﹣1,1],使得|f(x1)﹣f(x2)|≥e﹣1(e是自然对数的底数),求实数a的取值范围.2014-2015学年湖南省怀化市高三(上)期中数学试卷(理科)参考答案与试题解析一、选择题:本大题共10小题,每小题5分,共计50分,在每小题给出的四个选项中,只有一项符合题目要求,请把正确答案的代号填在答题卡上. 1.(5分)已知全集U={0,1,2,3,4,5}集合A={1,2,3,5},B={2,4},则(∁U A)∪B为()A.{0,2,4}B.{2,3,5}C.{1,2,4}D.{0,2,3,5}【解答】解:∵全集U={0,1,2,3,4,5},集合A={1,2,3,5},∴∁U A={0,4},∵B={2,4},∴(∁U A)∪B={0,2,4}.故选:A.2.(5分)设0<a<b<1,则下列不等式成立的是()A.a3>b3B.C.a b>1 D.lg(b﹣a)<0【解答】解:因为0<a<b<1,由不等式的基本性质可知:a3<b3,故A不正确;,所以B不正确;由指数函数的图形与性质可知a b<1,所以C不正确;由题意可知b﹣a∈(0,1),所以lg(b﹣a)<0,正确;故选:D.3.(5分)已知向量=(3,1),=(x,﹣2),=(0,2),若⊥(﹣),则实数x的值为()A.B.C.D.【解答】解:∵⊥(﹣),∴•(﹣)=0,即,∵向量=(3,1),=(x,﹣2),=(0,2),∴3x﹣2﹣2=0,即3x=4,解得x=,故选:A.4.(5分)运行如图的程序框图,则输出s的结果是()A.B.C.D.【解答】解:当n=2时,满足进入循环的条件,执行循环体后,S=,n=4;当n=4时,满足进入循环的条件,执行循环体后,S=,n=6;当n=6时,满足进入循环的条件,执行循环体后,S=,n=8;当n=8时,满足进入循环的条件,执行循环体后,S=,n=10;当n=10时,不满足进入循环的条件,故输出的S值为,故选:B.5.(5分)函数f(x)=x+sinx(x∈R)()A.是偶函数,且在(﹣∞,+∞)上是减函数B.是偶函数,且在(﹣∞,+∞)上是增函数C.是奇函数,且在(﹣∞,+∞)上是减函数D.是奇函数,且在(﹣∞,+∞)上是增函数【解答】解:∵f(x)=x+sinx,x∈R,∴f(﹣x)=﹣x﹣sinx=﹣f(x),∴f(x)是奇函数求导函数可得f′(x)=1+cosx∵﹣1≤cosx≤1∴f′(x)=1+cosx≥0∴函数f(x)=x+sinx(x∈R)在(﹣∞,+∞)上是增函数故选:D.6.(5分)由下列条件解△ABC,其中有两解的是()A.b=20,A=45°,C=80°B.a=30,c=28,B=60°C.a=12,c=15,A=120° D.a=14,c=16,A=45°【解答】解:A、由A=45°,C=80°,得到B=55°,根据正弦定理==得:a==,c=,则此时三角形只有一解,本选项错误;B、由a=30,c=28,B=60°,根据余弦定理得:b2=a2+c2﹣2accosB=844,解得b=2,即此三角形只有一解,本选项错误;C、由a=12,c=15,得到a<c,有A<C,而A=120°,得到C也为钝角,则此三角形无解,本选项错误;D、由a=14,c=16,A=45°,根据正弦定理=得:sinC==>,又c>a,得到C>45°,根据正弦函数的图象与性质得到C有两解,本选项正确,故选:D.7.(5分)从装有2个黄球和2个蓝球的口袋内任取2个球,则恰有一个黄球的概率是()A.B.C.D.【解答】解:从装有2个黄球和2个蓝球的口袋内任取2个球共有=6种方法,恰有一个黄球共有=4种,∴所求概率为P==故选:C.8.(5分)方程(x2+y2﹣4)=0的曲线形状是()A.B.C.D.【解答】解:由(x2+y2﹣4)=0,得,或x+y+1=0.它表示直线x+y+1=0和圆x2+y2=4在直线x+y+1=0右上方的部分.故选:C.9.(5分)函数f(x)=2x﹣﹣m的一个零点在区间(1,3)内,则实数m的取值范围是()A.(﹣1,7)B.(0,5) C.(﹣7,1)D.(1,5)【解答】解:∵f(x)=2x﹣﹣m,∴可判断(0,+∞)单调递增函数,∵f(x)=2x﹣﹣m的一个零点在区间(1,3)内,∴f(1)<0,f(3)>0,即:m>﹣1且m<7,﹣1<m<7故选:A.10.(5分)已知定义域为(0,+∞)的单调函数f(x),若对任意的x∈(0,+∞),都有,则方程f(x)=2﹣x3的解的个数是()A.0 B.1 C.2 D.3【解答】解:由题意,∵对任意的x∈(0,+∞),都有,且f(x)是定义在(0,+∞)上的单调函数;故f(x)﹣log2x=c(c为常数);故f(x)=log2x+c;故f(c)=3=log2c+c;故c=2;则方程f(x)=2﹣x3可化为log2x=﹣x3;作函数y=﹣x3与y=log2x的图象如下,仅有一个交点,故选B.二、填空题:本大题共5小题,每小题5分,共25分.把答案填在答题卡上的相应横线上.11.(5分)已知数列{a n}满足a1=2,a n+1=(n∈N*),则a3的值为.【解答】解:∵a n=(n∈N*),+1∴,a3=.a1=2,∴,=﹣.故答案为:.12.(5分)(文科)已知α∈(,π),sinα=,则tan=.【解答】解:∵α∈(,π),sinα=,∴cosα=﹣,∴tanα=﹣.∴tan==,故答案为:.13.(5分)已知函数f(x)=,则f(x)的定义域为(,1] .【解答】解:要使函数有意义,则,解得<x≤1,则函数的定义域是(,1].故答案为:(,1].14.(5分)已知一个正三棱柱的所有棱长均等于2,它的俯视图是一个边长为2的正三角形,那么它的侧(左)视图面积的最小值是.【解答】解:∵正三棱柱的所有棱长均等于2,它的俯视图是一个边长为2的正三角形,故它的侧(左)视图一定是一个高为2的矩形,当侧(左)视图的底面为俯视图的高时侧(左)视图面积最小,此时侧(左)视图面积S=2×=故答案为:15.(5分)已知集合M={x|mx+1﹣=0,x∈R},若M=∅,则实数m的取值范围是m<或m>.【解答】解:由题意,方程mx+1﹣=0无解,令=t(t≥0),则x=t2+3,则m(t2+3)+1﹣t=0在[0,+∞)上无解.即mt2﹣t+1+3m=0,则若m=0,方程有解.若m<0,则1+3m<0,则m<,若m>0,则△=1﹣4m(1+3m)<0或,解得,m>,故答案为:m<或m>.三、解答题:本大题共6小题,共75分.解答应写出文字说明、证明过程或演算步骤.16.(12分)函数f(x)=Asin(ωx+φ)部分图象如图所示.(Ⅰ)求f(x)的最小正周期及解析式;(Ⅱ)设g(x)=f(x)﹣cos2x,求函数g(x)在区间上的最大值和最小值.【解答】解:(Ⅰ)由图可得A=1,,所以T=π.(2分)所以ω=2.当时,f(x)=1,可得,因为,所以.(5分)所以f(x)的解析式为.(6分)(Ⅱ)===.(10分)因为,所以.当,即时,g(x)有最大值,最大值为1;当,即x=0时,g(x)有最小值,最小值为.(13分)17.(12分)设p:|4x﹣3|≤1;q:x2﹣(2a+1)x+a(a+1)≤0.若¬p是¬q 的必要而不充分条件,求实数a的取值范围.【解答】解:∵p:|4x﹣3|≤1;q:x2﹣(2a+1)x+a(a+1)≤0,∴p:﹣1≤4x﹣3≤1,解得{x|≤x≤1},q:{x|a≤x≤a+1},∵¬p是¬q的必要而不充分条件,∴¬q⇒¬p,¬p推不出¬q,可得p⇒q,q推不出p,∴解得0≤a≤,验证a=0和a=满足题意,∴实数a的取值范围为:a∈[0,];18.(12分)如图,在四棱锥S﹣ABCD中,底面ABCD是正方形,SA⊥底面ABCD,SA=AB,点M是SD的中点,AN⊥SC且交SC于点N.(1)求证:平面SAC⊥平面AMN;(2)求二面角D﹣AC﹣M的余弦值.【解答】解:(1)证明:∵SA⊥底面ABCD,底面ABCD是正方形,∴DC⊥SA,DC⊥DA,∴DC⊥平面SAD,∴DC⊥AM,又∵SA=AD,M是SD的中点,∴AM⊥SD,∴AM⊥平面SDC∴SC⊥AM.由已知AN⊥SC,∴SC⊥平面AMN.又SC⊂平面SAC,∴平面SAC⊥平面AMN.(2)取AD的中点F,则MF∥SA.作FQ⊥AC于Q,连结MQ.∵SA⊥底面ABCD,∴MF⊥底面ABCD,∵FQ⊥AC,∴MQ⊥AC,∴∠FQM为二面角D﹣AC﹣M的平面角.设SA=AB=a在Rt△MFQ中,,,∴,∴二面角D﹣AC﹣M的余弦值为.解法2:(1)如图,以A为坐标原点,建立空间直角坐标系A﹣xyz,由于SA=AB,可设AB=AD=AS=1,则A(0,0,0),B(0,1,0),C(1,1,0),D(1,0,0),S(0,0,1),,∴,∵,∴….(4分)又∵SC⊥AN且AN∩AM=A,∴SC⊥平面AMN.又SC⊂平面SAC∴平面SAC⊥平面AMN.(2)∵SA⊥底面ABCD,∴是平面ABCD的一个法向量,,设平面ACM的一个法向量为,∵,,则得∴,∴二面角D﹣AC﹣M的余弦值是.19.(13分)设等差数列{a n}的前n项和为S n,且a2=8,S4=40.数列{b n}的前n 项和为T n,且T n﹣2b n+3=0,n∈N*.(Ⅰ)求数列{a n},{b n}的通项公式;(Ⅱ)设c n=,求数列{c n}的前n项和P n.【解答】解:(Ⅰ)设等差数列{a n}的公差为d,由题意,得,解得,∴a n=4n,∵T n﹣2b n+3=0,∴当n=1时,b1=3,当n≥2时,T n﹣1﹣2b n﹣1+3=0,两式相减,得b n=2b n ﹣1,(n≥2)则数列{b n}为等比数列,∴;(Ⅱ).当n为偶数时,P n=(a1+a3+…+a n﹣1)+(b2+b4+…+b n)=.当n为奇数时,n=1时,P1=c1=a1=4,(法一)n﹣1为偶数,P n=P n﹣1+c n=2(n﹣1)+1+(n﹣1)2﹣2+4n=2n+n2+2n﹣1,(法二)P n=(a1+a3+…+a n﹣2+a n)+(b2+b4+…+b n﹣1)=.∴.20.(13分)在平面直角坐标系xOy中,O为坐标原点,以O为圆心的圆与直线x﹣y﹣4=0相切.(Ⅰ)求圆O的方程;(Ⅱ)若直线l:y=kx+3与圆C交于A,B两点,在圆C上是否存在一点M,使得=+,若存在,求出此时直线l的斜率;若不存在,说明理由.【解答】解:(Ⅰ)设圆O的半径为r,圆心为(0,0),∵直线x﹣y﹣4=0与圆O相切,∴d=r==2,…(3分)∴圆O的方程为x2+y2=4;…(5分)(Ⅱ)在圆O上存在一点M,使得=+,理由为:法1:∵直线l:y=kx+3与圆O相交于A,B两点,∴圆心O到直线l的距离d=<r=2,解得:k>或k<﹣,…(7分)假设存在点M,使得=+,∴四边形OAMB为菱形,…(8分)∴OM与AB互相垂直且平分,…(9分)∴圆心O到直线l:y=kx+3的距离d=|OM|=1,…(10分)即d==1,整理得:k2=8,…(11分)解得:k=±2,经验证满足条件,…(12分)则存在点M,使得=+;…(13分)法2:记OM与AB交于点C(x0,y0),∵直线l斜率为k,显然k≠0,∴OM直线方程为y=﹣x,…(7分)将直线l与直线OM联立得,解得;∴点M坐标为(,),…(9分)又点M在圆上,将M坐标代入圆方程得:+=4,解得:k2=8,…(11分)∴k=±2,经验证满足条件,…(12分)则存在点M,使得=+.…(13分)21.(13分)已知函数f(x)=a x+x2﹣xlna(a>0,a≠1).(1)求函数f(x)在点(0,f(0))处的切线方程;(2)求函数f(x)单调增区间;(3)若存在x1,x2∈[﹣1,1],使得|f(x1)﹣f(x2)|≥e﹣1(e是自然对数的底数),求实数a的取值范围.【解答】解:(1)∵f(x)=a x+x2﹣xlna,∴f′(x)=a x lna+2x﹣lna,∴f′(0)=0,f(0)=1即函数f(x)图象在点(0,1)处的切线斜率为0,∴图象在点(0,f(0))处的切线方程为y=1;(3分)(2)由于f'(x)=a x lna+2x﹣lna=2x+(a x﹣1)lna>0①当a>1,y=2x单调递增,lna>0,所以y=(a x﹣1)lna单调递增,故y=2x+(a x ﹣1)lna单调递增,∴2x+(a x﹣1)lna>2×0+(a0﹣1)lna=0,即f'(x)>f'(0),所以x>0故函数f(x)在(0,+∞)上单调递增;②当0<a<1,y=2x单调递增,lna<0,所以y=(a x﹣1)lna单调递增,故y=2x+(a x﹣1)lna单调递增,∴2x+(a x﹣1)lna>2×0+(a0﹣1)lna=0,即f'(x)>f'(0),所以x>0故函数f(x)在(0,+∞)上单调递增;综上,函数f(x)单调增区间(0,+∞);(8分)(3)因为存在x1,x2∈[﹣1,1],使得|f(x1)﹣f(x2)|≥e﹣1,所以当x∈[﹣1,1]时,|(f(x))max﹣(f(x))min|=(f(x))max﹣(f(x))min≥e﹣1,(12分)由(2)知,f(x)在[﹣1,0]上递减,在[0,1]上递增,所以当x∈[﹣1,1]时,(f(x))min=f(0)=1,(f(x))max=max{f(﹣1),f(1)},而f(1)﹣f(﹣1)=(a+1﹣lna)﹣(+1+lna)=a﹣﹣2lna,记g (t )=t ﹣﹣2lnt (t >0), 因为g′(t )=1+﹣=(﹣1)2≥0(当t=1时取等号),所以g (t )=t ﹣﹣2lnt 在t ∈(0,+∞)上单调递增,而g (1)=0, 所以当t >1时,g (t )>0;当0<t <1时,g (t )<0, 也就是当a >1时,f (1)>f (﹣1); 当0<a <1时,f (1)<f (﹣1)(14分)①当a >1时,由f (1)﹣f (0)≥e ﹣1⇒a ﹣lna ≥e ﹣1⇒a ≥e ,②当0<a <1时,由f (﹣1)﹣f (0)≥e ﹣1⇒+lna ≥e ﹣1⇒0<a ≤, 综上知,所求a 的取值范围为a ∈(0,]∪[e ,+∞).(16分)赠送—高中数学知识点【1.3.1】单调性与最大(小)值 (1)函数的单调性②在公共定义域内,两个增函数的和是增函数,两个减函数的和是减函数,增函数减去一个减函数为增函数,减函数减去一个增函数为减函数.③对于复合函数[()]y f g x =,令()u g x =,若()y f u =为增,()u g x =为增,则[()]y f g x =为增;若()y f u =为yxo减,()u g x =为减,则[()]y f g x =为增;若()y f u =为增,()u g x =为减,则[()]y f g x =为减;若()y f u =为减,()u g x =为增,则[()]y f g x =为减.(2)打“√”函数()(0)af x x a x=+>的图象与性质 ()f x分别在(,-∞、)+∞上为增函数,分别在[、上为减函数.(3)最大(小)值定义①一般地,设函数()y f x =的定义域为I ,如果存在实数M 满足:(1)对于任意的x I ∈,都有()f x M ≤;(2)存在0x I ∈,使得0()f x M =.那么,我们称M 是函数()f x 的最大值,记作max ()f x M =.②一般地,设函数()y f x =的定义域为I ,如果存在实数m 满足:(1)对于任意的x I ∈,都有()f x m ≥;(2)存在0x I ∈,使得0()f x m =.那么,我们称m 是函数()f x 的最小值,记作max ()f x m =.【1.3.2】奇偶性(4)函数的奇偶性①定义及判定方法②若函数()f x 为奇函数,且在0x =处有定义,则(0)0f =.第21页(共21页)③奇函数在y 轴两侧相对称的区间增减性相同,偶函数在y 轴两侧相对称的区间增减性相反.④在公共定义域内,两个偶函数(或奇函数)的和(或差)仍是偶函数(或奇函数),两个偶函数(或奇函数)的积(或商)是偶函数,一个偶函数与一个奇函数的积(或商)是奇函数.。
2015怀化二模 湖南省怀化市2015年高三第二次模拟考试文综试题 Word版含答案
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怀化市中小学课程改革教育质量监测试卷2015年高三第二次模考文科综合命题:怀化三中谢开良审题:市教科院王新建邱续发刘勇芙蓉中学向校宏怀铁一中阳富玉怀铁一中肖用成怀化三中肖军全大用溆浦一中周志华中方一中娄鸿要湖天中学谢珲杰本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,其中第Ⅱ卷第42—48题为选考题,其它题为必考题。
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第Ⅰ卷本卷共35个小题,每小题4分,共140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。
2015年2月,蛟龙号上的科学家在印度洋海底发现了大量的黑烟囱。
新生的大洋地壳温度较高,海水沿裂隙向下渗透可达几公里,在地壳深部加热升温,溶解了周围岩石中多种金属元素后,又沿着裂隙对流上升并喷发在海底,形成黑烟囱。
图1为“90°经线圈穿越的四大板块示意图”,图2为海底烟囱示意图。
据图回答1-2题。
1.图中Ⅰ板块为A.太平洋板块B.南极洲板块C.亚欧板块D.美洲板块2.可能发现黑海底烟囱的是A.1和2板块交界地带B.3板块内部C.4板块内部D.2和3板块交界地带某集团原董事长2002年开始在云南哀牢山承包荒地种橙。
以下是本来生活网对哀牢山橙园的介绍:干热的河谷气候,2000小时年日照量,1200毫米年降水量,充足的日照和最佳的温差使甜橙充分积累糖分,达到24:1的黄金甜酸比。
2015届2模成绩统计(云二)
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2015湖南怀化高考理科状元:杨凡
2015湖南怀化高考理科状元:杨凡
2015湖南怀化高考理科状元!
2015湖南怀化高考理科第一名是靖州一中考生杨凡(女),其总分为676分。
根据今天上午11:30公布的2015年湖南高考的分数控制线,靖州县对上线考生进行了初步统计,结果如下:
文科:参考人数348人,本科一批上线55人,上线率15.80%;本科二批上线人数130人,上线率37.36%;本科三批上线197人,上线率56.61%;专科批上线347人,上线率99.71%。
理科:参考人数446人,本科一批上线104人,上线率23.32%;本科二批上线人数211人,上线率47.31%;本科三批上线305人,上线率68.39%;专科批上线445人,上线率99.78%。
靖州考生600分以上共25人,其中文科3人、理科22人;靖州一中考生梁怀元(女)以档分652分获得怀化市文科状元,并一举夺得湖南省文科第三名;靖州一中考生杨凡(女)以档分676分获得怀化市理科状元。
怀化市2016上期高三二模成绩(理科)
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2015年湖南省怀化市高考数学二模试卷(理科)(解析版)
2015年湖南省怀化市高考数学二模试卷(理科)一、选择题:本大题共10小题,每小题5分,共计50分,在每小题给出的四个选项中,只有一项符合题目要求,请把正确答案的代号填在答题卡上.1.(5分)设集合M={x|0≤x<3},N={x|x2﹣3x﹣4<0},则集合M∩N等于()A.{x|0≤x<1}B.{x|0≤x≤1}C.{x|0≤x<3}D.{x|0≤x≤3} 2.(5分)复数(其中i为虚数单位)的虚部等于()A.﹣i B.﹣1C.1D.03.(5分)某程序框图如图所示,该程序运行后输出的结果为()A.7B.6C.5D.44.(5分)在△ABC中,“sin(A﹣B)cos B+cos(A﹣B)sin B≥1”是“△ABC是直角三角形”的()A.充分必要条件B.充分不必要条件C.必要不充分条件D.既不充分也不必要条件5.(5分)某几何体的三视图如图所示,且该几何体的体积是,则正视图中的x的值是()A.2B.C.D.36.(5分)若数列{a n}满足=0,n∈N*,p为非零常数,则称数列{a n}为“梦想数列”.已知正项数列为“梦想数列”,且b1b2b3…b99=299,则b8+b92的最小值是()A.2B.4C.6D.87.(5分)定积分dx的值为()A.B.C.πD.2π8.(5分)已知双曲线﹣=1(b>0),过其右焦点F作图x2+y2=9的两条切线,切点记作C,D,双曲线的右顶点为E,∠CED=150°,则双曲线的离心率为()A.B.C.D.9.(5分)定义在R上的函数f(x)满足:f'(x)>1﹣f(x),f(0)=6,f′(x)是f(x)的导函数,则不等式e x f(x)>e x+5(其中e为自然对数的底数)的解集为()A.(0,+∞)B.(﹣∞,0)∪(3,+∞)C.(﹣∞,0)∪(1,+∞)D.(3,+∞)10.(5分)已知A(1,0),曲线C:y=e ax恒过点B,若P是曲线C上的动点,且•的最小值为2,则a的值为()A.﹣2B.﹣1C.1D.2二、填空题:本大题共1小题,考生作答5小题,每小题5分,共25分.把答案填在答题卡上的相应横线上.(一)选作题(请考生在11、12、13三题中任选2题作答,如果全做,则按前2题记分)11.(5分)在极坐标系中,定点A(2,),点B在直线ρcosθ+ρsinθ=0上运动,则线段AB的最短长度为.一、选做题12.(5分)如图,P AB、PCD为圆O的两条割线,若P A=5,AB=7,CD=11,AC=2,则BD=.一、选做题13.若不等式|x+3|+|x﹣7|≥a2﹣3a的解集为R,则实数a的取值范围是.五、填空题(共3小题,每小题5分,满分15分)14.(5分)某班有50名同学,一次数学考试的成绩X服从正态分布N(105,102),已知p (95≤X≤105)=0.34,估计该班学生数学成绩在115分以上的有人.15.(5分)已知点P(x,y)满足条件(k为常数),若z=x+3y的最大值为8,则k=.16.(5分)设f(x)是定义在R上的增函数,且对于任意的x都有f(1﹣x)+f(1+x)=0恒成立.如果实数m、n满足不等式组,那么m2+n2的取值范围是.三、解答题:本大题共6小题,共75分.解答应写出文字说明、证明过程或演算步骤. 17.(12分)已知向量=(sinωx,cosωx),=(cosωx,cosωx),(ω>0),函数f(x)=•﹣的最小正周期为π.(Ⅰ)求函数f(x)的单调增区间;(Ⅱ)如果△ABC的三边a、b、c所对的角分别为A,B,C,且满足b2+c2=a2﹣bc,求f(A)的值.18.(12分)从6名男同学和4名女同学中随机选出3名同学参加一项竞技测试,每位同学通过测试的概率为0.7,试求:(Ⅰ)选出的三位同学中至少有一名女同学的概率;(Ⅱ)选出的三位同学中同学甲被选中并且通过测试的概率;(Ⅲ)设选出的三位同学中男同学的人数为ξ,求ξ的概率分布列和数学期望.19.(12分)如图,在斜三棱柱ABC﹣A1B1C1中,侧面AA1B1B⊥底面ABC,侧棱AA1与底面ABC成60°的角,AA1=2.底面ABC是边长为2的正三角形,其重心为G点,E是线段BC1上一点,且BE=BC1.(1)求证:GE∥侧面AA1BB;(2)求平面B1GE与底面ABC所成锐二面角的正切值.20.(13分)已知数列{a n}是等差数列,数列{b n}是等比数列,a1b1=3,且对任意的n∈N+,都有a1b1+a2b2+a3b3+…+a n b n=.(Ⅰ)求数列{a n b n}的通项公式;(Ⅱ)若数列{b n}的首项为3,公比为3,设c n=b n+(﹣1)n﹣1λ•2an+1,且对任意的n∈N+,都有c n+1>c n成立,求实数λ的取值范围.21.(13分)已知抛物线Γ:y2=2px(p>0)的焦点为F,若过点F且斜率为1的直线与抛物线Γ相交于M、N两点,且|MN|=4.(Ⅰ)求抛物线Γ的方程;(Ⅱ)若点P是抛物线Γ上的动点,点B、C在y轴上,圆(x﹣1)2+y2=1内切于△PBC,求△PBC面积的最小值.22.(13分)已知函数f(x)=lnx﹣mx+m,m∈R.(Ⅰ)求函数f(x)的单调区间.(Ⅱ)若f(x)≤0在x∈(0,+∞)上恒成立,求实数m的取值范围.(Ⅲ)在(Ⅱ)的条件下,任意的0<a<b,.2015年湖南省怀化市高考数学二模试卷(理科)参考答案与试题解析一、选择题:本大题共10小题,每小题5分,共计50分,在每小题给出的四个选项中,只有一项符合题目要求,请把正确答案的代号填在答题卡上.1.(5分)设集合M={x|0≤x<3},N={x|x2﹣3x﹣4<0},则集合M∩N等于()A.{x|0≤x<1}B.{x|0≤x≤1}C.{x|0≤x<3}D.{x|0≤x≤3}【解答】解:由集合N中的不等式x2﹣3x﹣4<0,因式分解得:(x﹣4)(x+1)<0,可化为:或,解得:﹣1<x<4,∴集合N={x|﹣1<x<4},又集合M={x|0≤x<3},则M∩N=M={x|0≤x<3}.故选:C.2.(5分)复数(其中i为虚数单位)的虚部等于()A.﹣i B.﹣1C.1D.0【解答】解:由于,所以虚部为﹣1,故选:B.3.(5分)某程序框图如图所示,该程序运行后输出的结果为()A.7B.6C.5D.4【解答】解:模拟执行程序框图,可得k=0,S=0满足条件S<100,S=1,k=1满足条件S<100,S=1+2=3,k=2满足条件S<100,S=3+8=11,k=3满足条件S<100,S=11+2048=2059,k=4不满足条件S<100,退出循环,输出k的值为4.故选:D.4.(5分)在△ABC中,“sin(A﹣B)cos B+cos(A﹣B)sin B≥1”是“△ABC是直角三角形”的()A.充分必要条件B.充分不必要条件C.必要不充分条件D.既不充分也不必要条件【解答】解:sin(A﹣B)cos B+cos(A﹣B)sin B=sin(A﹣B+B)=sin A∵在△ABC中,sin(A﹣B)cos B+cos(A﹣B)sin B≥1,∴sin(A﹣B+B)=sin A≥1,∵0<A<π,∴A=90°,∵“△ABC是直角三角形”∴A=90°或B=90°或C=90°,根据充分必要条件的定义可判断;“sin(A﹣B)cos B+cos(A﹣B)sin B≥1”是“△ABC是直角三角形”的充分不必要条件,故选:B.5.(5分)某几何体的三视图如图所示,且该几何体的体积是,则正视图中的x的值是()A.2B.C.D.3【解答】解:由三视图可知:原几何体是一个四棱锥,其中底面是一个上、下、高分别为1、2、2的直角梯形,一条长为x的侧棱垂直于底面.则体积为=,解得x=.故选:C.6.(5分)若数列{a n}满足=0,n∈N*,p为非零常数,则称数列{a n}为“梦想数列”.已知正项数列为“梦想数列”,且b1b2b3…b99=299,则b8+b92的最小值是()A.2B.4C.6D.8【解答】解:依题意可得b n+1=qb n,则数列{b n}为等比数列.又,则b50=2.∴,当且仅当b8=b92,即该数列为常数列时取等号.故选:B.7.(5分)定积分dx的值为()A.B.C.πD.2π【解答】解:∵y=,∴(x﹣1)2+y2=1表示以(1,0)为圆心,以1为半径的圆,∴定积分dx所围成的面积就是该圆的面积的四分之一,∴定积分dx=,故选:A.8.(5分)已知双曲线﹣=1(b>0),过其右焦点F作图x2+y2=9的两条切线,切点记作C,D,双曲线的右顶点为E,∠CED=150°,则双曲线的离心率为()A.B.C.D.【解答】解:如图,∵双曲线﹣=1(b>0),过其右焦点F作圆x2+y2=9的两条切线,切点记作C,D,双曲线的右顶点为E,∠CED=150°,∴∠FOC=180°﹣2∠OEC=30°,∠OCF=90°,∴OC=a,OF=c,CF=c,∴a2+(c)2=c2,解得c=a,∴e==.故选:D.9.(5分)定义在R上的函数f(x)满足:f'(x)>1﹣f(x),f(0)=6,f′(x)是f(x)的导函数,则不等式e x f(x)>e x+5(其中e为自然对数的底数)的解集为()A.(0,+∞)B.(﹣∞,0)∪(3,+∞)C.(﹣∞,0)∪(1,+∞)D.(3,+∞)【解答】解:设g(x)=e x f(x)﹣e x,(x∈R),则g′(x)=e x f(x)+e x f′(x)﹣e x=e x[f(x)+f′(x)﹣1],∵f'(x)>1﹣f(x),∴f(x)+f′(x)﹣1>0,∴g′(x)>0,∴y=g(x)在定义域上单调递增,∵e x f(x)>e x+5,∴g(x)>5,又∵g(0)=e0f(0)﹣e0=6﹣1=5,∴g(x)>g(0),∴x>0,∴不等式的解集为(0,+∞)故选:A.10.(5分)已知A(1,0),曲线C:y=e ax恒过点B,若P是曲线C上的动点,且•的最小值为2,则a的值为()A.﹣2B.﹣1C.1D.2【解答】解:因为e0=1所以B(0,1).考察•的几何意义,因为=,故•取得最小时,在上的投影长应是,所以P,B重合.这说明曲线C:y=e ax在点B(0,1)处的切线与垂直,所以y′|x=0=1,即a•e0=1,∴a=1,故选:C.二、填空题:本大题共1小题,考生作答5小题,每小题5分,共25分.把答案填在答题卡上的相应横线上.(一)选作题(请考生在11、12、13三题中任选2题作答,如果全做,则按前2题记分)11.(5分)在极坐标系中,定点A(2,),点B在直线ρcosθ+ρsinθ=0上运动,则线段AB的最短长度为.【解答】解:∵x=ρcosθ,y=ρsinθ,代入直线ρcosθ+ρsinθ=0,可得x+y=0…①,∵在极坐标系中,定点A(2,),∴在直角坐标系中,定点A(0,2),∵动点B在直线x+y=0上运动,∴当线段AB最短时,直线AB垂直于直线x+y=0,∴k AB=,设直线AB为:y﹣2=x,即y=x+2…②,联立方程①②求得交点B(﹣,),∴|AB|==.故答案为:.一、选做题12.(5分)如图,P AB、PCD为圆O的两条割线,若P A=5,AB=7,CD=11,AC=2,则BD=6.【解答】解:设PC=x,则根据割线定理得P A×PB=PC×PD,即5(5+7)=x(x+11),解之得x=4(舍去﹣15)∴PC=4,PD=15∵四边形ABDC是圆内接四边形∴∠B=∠ACP,∠D=∠CAP,可得△P AC∽△PDB∴,即,可得BD=6故答案为:6.一、选做题13.若不等式|x+3|+|x﹣7|≥a2﹣3a的解集为R,则实数a的取值范围是[﹣2,5].【解答】解:∵|x+3|+|x﹣7|≥|(x+3)+(7﹣x)|=10,∴|x+3|+|x﹣7|≥a2﹣3a的解集为R⇔a2﹣3a≤10,解得﹣2≤a≤5.∴实数a的取值范围是[﹣2,5].故答案为:[﹣2,5].五、填空题(共3小题,每小题5分,满分15分)14.(5分)某班有50名同学,一次数学考试的成绩X服从正态分布N(105,102),已知p (95≤X≤105)=0.34,估计该班学生数学成绩在115分以上的有8人.【解答】解:∵考试的成绩ξ服从正态分布N(105,102).∴考试的成绩X关于X=105对称,∵P(95≤X≤105)=0.34,∴P(X≥105)=(1﹣0.68)=0.16,∴该班数学成绩在115分以上的人数为0.16×50=8故答案为:8.15.(5分)已知点P(x,y)满足条件(k为常数),若z=x+3y的最大值为8,则k=﹣6.【解答】解:画出可行域将z=x+3y变形为y=,画出直线平移至点A时,纵截距最大,z最大,联立方程得,代入,∴k=﹣6.故答案为﹣616.(5分)设f(x)是定义在R上的增函数,且对于任意的x都有f(1﹣x)+f(1+x)=0恒成立.如果实数m、n满足不等式组,那么m2+n2的取值范围是(13,49).【解答】解:由于对于任意的x都有f(1﹣x)+f(1+x)=0恒成立,则﹣f(n2﹣8n)=f(2﹣n2+8n),即有f(m2﹣6m+23)+f(n2﹣8n)<0,即为f(m2﹣6m+23)<f(2﹣n2+8n),由于f(x)是定义在R上的增函数,则m2﹣6m+23<2﹣n2+8n,即有(m﹣3)2+(n﹣4)2<4,又m>3,则原不等式组表示的平面区域为右半圆内的部分,由于m2+n2表示点(m,n)与原点的距离d的平方,由图象可得d∈(|OA|,|OB|),即d∈(,7).即有m2+n2的取值范围是(13,49).故答案为:(13,49).三、解答题:本大题共6小题,共75分.解答应写出文字说明、证明过程或演算步骤. 17.(12分)已知向量=(sinωx,cosωx),=(cosωx,cosωx),(ω>0),函数f(x)=•﹣的最小正周期为π.(Ⅰ)求函数f(x)的单调增区间;(Ⅱ)如果△ABC的三边a、b、c所对的角分别为A,B,C,且满足b2+c2=a2﹣bc,求f(A)的值.【解答】解:(Ⅰ)f(x)=sinωx cosωx+cos2ωx﹣=sin2ωx+cos2ωx=sin(2ωx+),∵f(x)的最小正周期为π,且ω>0∴=π,∴ω=1,∴f(x)=sin(2x+),令﹣+2kπ≤2x+≤+2kπ,k∈Z,得到﹣+kπ≤x≤+kπ,k∈Z,则f(x)的增区间为[﹣+kπ,+kπ],k∈Z;(Ⅱ)∵b2+c2=a2﹣bc,∴b2+c2﹣a2=﹣bc,由余弦定理得:cos A===﹣,∴在△ABC中,A=,∴f(A)=sin(2×+)=sin2π=0.18.(12分)从6名男同学和4名女同学中随机选出3名同学参加一项竞技测试,每位同学通过测试的概率为0.7,试求:(Ⅰ)选出的三位同学中至少有一名女同学的概率;(Ⅱ)选出的三位同学中同学甲被选中并且通过测试的概率;(Ⅲ)设选出的三位同学中男同学的人数为ξ,求ξ的概率分布列和数学期望.【解答】解:(Ⅰ)至少有一名女同学的概率为1﹣=…(4分)(Ⅱ)同学甲被选中的概率为=0.3,则同学甲被选中且通过测试的概率为0.3×0.7=0.21 …(8分)(Ⅲ)根据题意,ξ的可能取值为0、1、2、3,P(ξ=0)==,P(ξ=1)==,P(ξ=2)==,P(ξ=3)==所以,ξ的分布列为:E(ξ)=0×+1×+2×+3×=1.8 …(12分)19.(12分)如图,在斜三棱柱ABC﹣A1B1C1中,侧面AA1B1B⊥底面ABC,侧棱AA1与底面ABC成60°的角,AA1=2.底面ABC是边长为2的正三角形,其重心为G点,E是线段BC1上一点,且BE=BC1.(1)求证:GE∥侧面AA1BB;(2)求平面B1GE与底面ABC所成锐二面角的正切值.【解答】解:(1)延长B1E交BC于F,∵△B1EC1∽△FEB,BE=EC1∴BF=B1C1=BC,从而F为BC的中点.(2分)∵G为△ABC的重心,∴A、G、F三点共线,且=,∴GE∥AB1,又GE⊄侧面AA1B1B,AB1⊂侧面AA1B1B,∴GE∥侧面AA1B1B(4分)(2)在侧面AA1B1B内,过B1作B1H⊥AB,垂足为H,∵侧面AA1B1B⊥底面ABC,∴B1H⊥底面ABC.又侧棱AA1与底面ABC成60°的角,AA1=2,∴∠B1BH=60°,BH=1,B1H=(6分)在底面ABC内,过H作HT⊥AF,垂足为T,连B1T.由三垂线定理有B1T⊥AF,又平面B1GE与底面ABC的交线为AF,∴∠B1TH为所求二面角的平面角(8分)∴AH=AB+BH=3,∠HAT=30°,∴HT=AH sin30°=,在Rt△B1HT中,tan∠B1TH=(10分)从而平面B1GE与底面ABC所成锐二面角的大小为arctan (12分).20.(13分)已知数列{a n}是等差数列,数列{b n}是等比数列,a1b1=3,且对任意的n∈N+,都有a1b1+a2b2+a3b3+…+a n b n=.(Ⅰ)求数列{a n b n}的通项公式;(Ⅱ)若数列{b n}的首项为3,公比为3,设c n=b n+(﹣1)n﹣1λ•2an+1,且对任意的n∈N+,都有c n+1>c n成立,求实数λ的取值范围.【解答】解:(Ⅰ)∵对任意的n∈N+,都有a1b1+a2b2+a3b3+…+a n b n=.∴当n≥2时,a1b1+a2b2+a3b3+…+a n﹣1b n﹣1=.两式相减,得a n b n=n•3n(n≥2),又当n=1时,a1b1=3,适合上式,从而得a n b n=n•3n(n∈N*).(Ⅱ)∵数列{b n}的首项为3,公比为3,∴.又a n b n=n•3n(n∈N*).因此a n=n,∴c n=b n+(﹣1)n﹣1λ•2an+1=3n+(﹣1)n﹣1λ•2n+1,∵对任意的n∈N+,都有c n+1>c n成立,∴3n+1+(﹣1)n•2n+2>3n+(﹣1)n﹣1λ•2n+1,化简得(﹣1)n﹣1•λ,当n为奇数时,λ恒成立,∴,即,当n为偶数时,恒成立,∴=﹣,即,综合可得:λ∈.21.(13分)已知抛物线Γ:y2=2px(p>0)的焦点为F,若过点F且斜率为1的直线与抛物线Γ相交于M、N两点,且|MN|=4.(Ⅰ)求抛物线Γ的方程;(Ⅱ)若点P是抛物线Γ上的动点,点B、C在y轴上,圆(x﹣1)2+y2=1内切于△PBC,求△PBC面积的最小值.【解答】解:(Ⅰ)抛物线Γ:y2=2px(p>0)的焦点为F(,0),则过点F且斜率为1的直线方程为y=x﹣,联立抛物线方程y2=2px,消去y得:x2﹣3px+=0,设M(x1,y1),N(x2,y2),则x1+x2=3p,由抛物线的定义可得,|MN|=x1+x2+p=4p=4,解得p=1.所以抛物线Γ的方程为y2=2x;(Ⅱ)设P(x0,y0),B(0,b),C(0,c)不妨设b>c,直线PB的方程为y﹣b=x,化简得(y0﹣b)x﹣x0y+x0b=0,又圆心(1,0)到直线PB的距离为1,故=1,即(y0﹣b)2+x02=(y0﹣b)2+2x0b(y0﹣b)+x02b2,不难发现x0>2,上式又可化为(x0﹣2)b2+2y0b﹣x0=0,同理有(x0﹣2)c2+2y0c﹣x0=0,所以b,c可以看做关于t的一元二次方程(x0﹣2)t2+2y0t﹣x0=0的两个实数根,则b+c=,bc=,所以(b﹣c)2=(b+c)2﹣4bc=,因为点P(x0,y0)是抛物线Γ上的动点,所以y02=2x0,则(b﹣c)2=,又x0>2,所以b﹣c=.所以S△PBC=(b﹣c)x0==x0﹣2++4≥2+4=8,当且仅当x0=4时取等号,此时y0=±2,所以△PBC面积的最小值为8.22.(13分)已知函数f(x)=lnx﹣mx+m,m∈R.(Ⅰ)求函数f(x)的单调区间.(Ⅱ)若f(x)≤0在x∈(0,+∞)上恒成立,求实数m的取值范围.(Ⅲ)在(Ⅱ)的条件下,任意的0<a<b,.【解答】解:(Ⅰ)当m≤0时,f′(x)>0恒成立,则函数f(x)在(0,+∞)上单调递增;…2分当m>0时,由则,则f(x)在上单调递增,在上单调递减.…4分(Ⅱ)由(Ⅰ)得:当m≤0时显然不成立;当m>0时,只需m﹣lnm﹣1≤0即….6分令g(x)=x﹣lnx﹣1,则,函数g(x)在(0,1)上单调递减,在(1,+∞)上单调递增.∴g(x)min=g(1)=0.则若f(x)≤0在x∈(0,+∞)上恒成立,m=1.…8分(Ⅲ)由0<a<b得,由(Ⅱ)得:,则,则原不等式成立.…12分。
怀化市高三一模成绩
学校
最 高 分 586 647 425 637 560 594 583 537 555 635 500 626 584 595 598 594 483 613 531 599 513 517 434 617 506
姓 名 仇礼鸿 聂智林 彭洋 张媛 王倩倩 杨烨华 姚梓豪 李昱欣 王杰 梁久久 张扬扬 杨凡 蒙简简 刘勰民 姚金圳 舒俊 李云飞 刘玉洁 余秋梅 张鑫 朱偌辉 吴 健 舒正文 曹力元 石春霞
2015年高三一模考试总分分段统计表(理科) (2015年3月)
项目 参考
人数 怀化一中 314 怀化三中 631 怀化五中 153 怀铁一中 450 湖天中学 182 中方一中 297 黔阳一中 368 芙蓉中学 198 洪江一中 98 会同一中 385 会同三中 201 靖州一中 507 通道一中 309 芷江一中 401 新晃一中 274 麻阳一中 464 麻阳民中 222 辰溪一中 449 辰溪二中 195 溆浦一中 625 溆浦二中 170 溆浦三中 117 江维中学 28 沅陵一中 585 沅陵二中 286
合计
149 212 239 530
) (2015年3月)
450 以 下 249 372 153 307 157 275 323 175 91 256 196 410 283 350 243 414 220 370 185 483 162 116 28 440 283 6541 合 计 314 631 153 450 182 297 368 198 98 385 201 507 309 401 274 464 222 449 195 625 170 117 28 585 286 7909
449 440 16 31 0 21 7 5 7 6 0 21 1 15450 以 上 65 259 0 143 25 22 45 23 7 129 5 97 26 51 31 50 2 79 10 142 8 1 0 145 3 1368
湖南省怀化市2015年高三第二次模拟考试数学文试题
湖南省怀化市2015年高三第二次模考 文科数学本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,共150分. 时量:120分钟.第Ⅰ卷(选择题 共50分)一、选择题:本大题共10小题,每小题5分,共计50分,在每小题给出的四个选项中,只有一项符合题目要求,请把正确答案的代号填在答题卡上.1. 已知集合{}220A x x x =--≤,}1|{<=x x B ,则B A 为A. ()12,B. (]12,C. [)11-,D. ()11-,2. 下列说法正确的是A .命题“若21x =,则1x =”的否命题为“若21x =,则1x ≠”;B .命题“01,02<-+≥∀x x x ”的否定是“01,02<-+<∃x x x ”;C .命题“若x y =,则sin sin x y =”的逆否命题为真命题;D .“1x =-” 是“2560x x --=”的必要不充分条件.3. 设i i z +-=|3|(i 为虚数单位),则z 的共轭复数为 A .2i - B .2i + C .4i - D .4i + 4.对任意非零实数b a ,,定义b a ⊗的算法原理 如右侧程序框图所示.设52a =,2=b ,则计算 机执行该运算后输出的结果是7.5A 7.4B 7.3C 7.2D 5.某几何体的三视图如图所示,且该几何体的体积是3, 则正视图中的x 的值是 A.2 B.92 C.32D.3 6. 定义在R 上的奇函数()f x 满足(1)()f x f x +=-,当10,2x ⎛⎤∈ ⎥⎝⎦时,)1(log )(2+=x x f ,则()f x 在区间31,2⎛⎫ ⎪⎝⎭内是A.减函数且()0f x >B.减函数且()0f x <C.增函数且()0f x >D.增函数且()0f x <7.若正项数列{}n a 满足1lg lg 1n n a a +-=,且20152010200320022001=++++a a a a ,则2020201320122011a a a a ++++ 的值为A .2015×1010B .2015×1011C .2016×1010D .2016×10118.设1F 、2F 是椭圆的两个焦点,若椭圆上存在点P ,使12021=∠PF F ,则椭圆离心率e 的取值范围是 A.)1,23[B.)1,23(C.)23,0(D.]23,0( 9.已知非零向量,a b满足a b a b +=-= ,则a b + 与a b - 的夹角为A.6π B.3π C.23π D.56π10.定义域为R 的函数1,22()1,2x x f x x ⎧≠⎪-=⎨⎪=⎩,若关于x 的函数21)()()(2++=x af x f x h有5个不同的零点1x ,2x ,3x ,4x ,5x ,则2222212345x x x x x ++++等于 A.15 B.20 C.30 D.35第Ⅱ卷(非选择题 共100分)二、填空题:本大题共5小题,每小题5分,共25分. 把答案填在答题卡上的相应横线上. 11.在极坐标系中,圆4cos ρθ=的圆心到直线()6R πθρ=∈的距离是 .12.已知(,)M x y为由不等式组02x y x ⎧≤≤⎪≤⎨⎪≤⎩所确定的平面区域上的动点,若点)A,则z OM OA =⋅的最大值为 .13.已知命题P :[]0,1,xx a e ∀∈≥,命题q :2,40,x R x x a ∃∈++=若命题“q p ∧”是真命题,则实数a 的取值范围是 .14. 式子70sin 220sin 10cos 2-的值为 .15.设函数)(x f 定义域为D ,若存在非零实数t ,使得对任意)(D M M x ⊆∈,都有M t x ∈+,且)()(x f t x f ≥+成立,则称)(x f 为M 上的“t 频函数”. 若22)(x x f =为区间),21[+∞-上的“t 频函数”,则t 的取值范围是 .三、解答题:本大题共6小题,共75分.解答应写出文字说明、证明过程或演算步骤. 16.(本小题满分12分)设函数23()sin cos 2f x x x x =-+. (Ⅰ)求)(x f 的最小正周期及值域;(Ⅱ)已知ABC ∆中,角C B A ,,的对边分别为c b a ,,,若()0f A =,3=a ,3=+c b ,求ABC ∆的面积.17.(本小题满分12分)在中学生综合素质评价某个维度的测评中,分“优秀、合格、尚待改进”三个等级进行学生互评.某校高一年级有男生500人,女生400人,为了了解性别对该维度测评结果的影响,采用分层抽样方法从高一年级抽取了45名学生的测评结果,并作出频数统计表如下: 表1:男生 表2:女生(Ⅰ)从表2的非优秀学生中随机选取2人交谈,求所选2人中恰有1人测评等级为合格的概率;(Ⅱ)由表中统计数据填写右边22⨯列联表,并判断 是否有90%的把握认为“测评结果优秀与性别有关”.参考数据与公式:()()()()()22n ad bc K a b c d a c b d -=++++,其中n a b c d =+++.临界值表:18.(本小题满分12分)如图,四棱锥ABCD P -中,PAB ∆是正三角形,四边形ABCD 是矩形,且面⊥PAB 面ABCD ,1=PA ,2=PC .(Ⅰ) 若点E 是PC 的中点,求证://PA 面BDE ; (Ⅱ) 若点F 在线段PA 上,且13PF PA =, 求三棱锥AFD B -的体积.19.(本小题满分13分)已知数列{}n a 是等差数列,数列{b }n 是等比数列,113a b =,且对任意的+∈N n ,都有1112233(21)334n n n n a b a b a b a b +-+++++=….(Ⅰ)求数列{}n n a b 的通项公式;(Ⅱ)若数列{b }n 的首项为3,公比为3,设11(1)2n a n n n c b λ+-=+-⋅,且对任意的+∈N n ,都有1n n c c +>成立,求实数λ的取值范围.20.(本小题满分13分)已知抛物线的顶点是坐标原点O ,焦点F 在x 轴正半轴上,抛物线上一点),3(m 到焦点距离为4,过点F 的直线l 与抛物线交于A B 、两点. (Ⅰ)求抛物线的方程;(Ⅱ)若点P 在抛物线准线上运动,其纵坐标的取值范围是[2,2]-,且16=⋅PB PA ,点Q 是以AB 为直径的圆与准线的一个公共点,求点Q 的纵坐标的取值范围.21. (本小题满分13分)已知函数1()ln f x x x=+. (Ⅰ)求函数()f x 在(2,(2))f 处的切线方程;(Ⅱ)若mx x f x g +=)()(在[)1,+∞上为单调函数,求实数m 的取值范围; (Ⅲ)若在],[e 1上至少存在一个0x ,使得0002x ex f kx >-)(成立,求实数k 的取值范围.怀化市中小学课程改革教育质量监测试卷2015年高三二模 文科数学参考答案一、选择题:11、1; 12、4; 13、[],4e ; 14; 15、),1[∞+.16解: (Ⅰ)23()sin cos 2f x x x x =-+=cos 213x π⎛⎫++ ⎪⎝⎭ …… 3分所以()f x 的最小正周期为T π= ………………… 4分∵x R ∈∴1cos 213x π⎛⎫-≤+≤ ⎪⎝⎭, 故()f x 的值域为[02],…………… 6分 (Ⅱ)由()cos 2103f A A π⎛⎫=++= ⎪⎝⎭得cos(2)13A π+=-,又(0)A π∈,,得3A π=………………… 8分由余弦定理,得2222cos3a b c bc π=+-=2()3b c bc +-,又a =3b c +=,所以393bc =-,解得2bc = ……………… 10分所以ABC ∆的面积11sin2232S bc π==⨯=…………………12分 17解:(Ⅰ)设从高一年级男生中抽出m 人,则45500500400m =+,25m =, ∴ 21820,52025=-==-=y x …………… 2分表2中非优秀学生共5人,记测评等级为合格的3人为,,a b c ,尚待改进的2人为,A B , 则从这5人中任选2人的所有可能结果为:),(b a ,),(c a ,),(c b ,),(B A ,),(A a ,),(B a ,),(A b ,),(B b ,),(A c ,),(B c 共10种 ………………… 4分设事件C 表示“从表二的非优秀学生5人中随机选取2人,恰有1人测评等级为合格”, 则C 的结果为:()()()()()(),,,,,,,,,,,a A a B b A b B c A c B ,共6种……………6分∴63()105P C ==, 故所求概率为35………………… 8分 (Ⅱ)∵10.90.1-=,2( 2.706)0.10P K ≥=, 而()2245155151091.1252.706301525208K ⨯-⨯===<⨯⨯⨯…………………11分所以没有90%的把握认为“测评结果优秀与性别有关” …………………12分 18解:(Ⅰ)连接AC ,设AC BD O = ,E PC 点是的中点。
2015级高三摸底考试数学理科答案及评分意见
数学(理科)参考答案及评分意见
第 Ⅰ 卷 (选 择 题 ,共 60 分 )
一 、选 择 题 :(每 小 题 5 分 ,共 60 分 )
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第 Ⅱ 卷 (非 选 择 题 ,共 90 分 )
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湖南省怀化市2015届高三第一次模拟考试数学(理)试题
2015 年高三第一次模考
理科数学
命题人:湖天中学 刘 华
审题人:王 杏、丁亚玲、蒋晖林、张理科
试卷分第 Ⅰ 卷(选择题)和第Ⅱ卷(非选择题)两部分,共
150 分 . 时量: 120 分钟 .
第 Ⅰ卷(选择题 共 50 分)
一、选择题 :本大题共 10 小题,每小题 5 分,共计 50 分,在每小题给出的四个选项中,只有一项符合题
10 a 3x 万元 (a 0) , 500
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1000 名员工创造的年总利润,则最多调整出多少
名员工从事第三产业?
(Ⅱ)在( Ⅰ )的条件下,若调整出的员工创造出的年总利润始终不高于剩余员工创造的年总利润,
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高三十校联考二理科成绩册
123 112 103 119 117 115 120 113 121 106 118 107 114 109 112 122 103 116 115 100 109 103 108 114 113 108 114 111 119 117 120 120 119 103 109 104 103 104 113 103 92 118 113 110 114 106 118 101 93 111 107 93 107 116 106 106 104 98 120 99 94 105 108
138 125 133 130 125 124 120 116 110 122 110 117 119 121 126 118 113 128 97 124 110 127 127 98 96 96 115 100 114 112 112 94 129 108 101 114 115 103 106 107 114 90 86 104 101 100 103 104 102 100 95 93 93 102 91 97 104 101 87 105 92 87 48
1 16 2 6 16 20 32 52 89 24 89 46 37 31 13 40 72 9 254 20 89 10 10 236 276 276 55 211 63 78 78 301 8 110 193 63 55 171 141 121 63 364 429 161 193 211 171 161 185 211 289 315 315 185 346 254 161 193 412 153 332 412 866
2014-2015学年高三上期十校联考2理科三(
考号 姓名
)班成绩册
2014.11.19 74 71 74 74 73 75 72 68 69 74 71 73 68 62 69 68 71 63 68 72 70 65 72 61 72 68 69 70 69 62 68 62 71 50 68 61 71 64 63 62 61 34 63 67 57 62 62 61 65 65 67 70 68 66 62 61 60 59 67 62 58 64 34 31 64 12 46 12 12 18 7 32 76 66 12 46 18 76 177 66 76 46 162 76 32 55 120 32 209 32 76 66 55 66 177 76 177 46 421 76 209 46 137 162 177 209 804 162 92 288 177 177 209 120 120 92 55 76 108 177 209 230 246 92 177 266 137 804 849 137 653 633.8 632.4 630.3 627.8 625 621.6 615.8 613.9 612.8 606.8 606.1 604.8 599.9 595.1 592.4 588.4 587.4 585.9 585.8 583.8 581 581 580.5 579.8 576.4 576 575.3 572.3 568.3 565.4 565.3 562.9 562.1 560.9 555.1 551.5 549.4 549.3 547.8 545 543.1 543 541.8 540.6 539.6 537.1 537.1 530.8 529.3 528.3 528 526.9 525.5 525.1 520.1 519.8 514.1 512.6 504.9 498.6 490.1 432.5 398.5 558 2 6 7 9 10 13 16 18 20 21 26 27 29 36 38 41 47 48 51 52 54 56 56 58 62 65 66 67 69 74 76 77 82 84 87 98 102 107 108 110 117 119 120 121 123 127 135 135 150 153 156 158 160 162 163 173 174 188 193 213 233 256 432 550 93 2 4 5 7 8 10 12 14 15 16 20 21 23 28 30 33 39 40 42 43 44 46 46 48 51 53 54 55 57 60 61 62 66 68 70 77 79 80 81 82 85 86 87 88 89 91 93 93 103 106 107 109 110 111 112 119 120 127 131 142 153 168 261 342 73 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 1
怀化市2015期高三期考成绩(怀化理科)
87.0 90.0 75.0 82.0 97.0 98.0 98.0 80.0 78.0 80.0 88.0 90.0 87.0 93.0 92.0 103.0 101.0 93.0 72.0 79.0 89.0 84.0 89.0 83.0 85.0 99.0 80.0 91.0 73.0 70.0 89.0 73.0 92.0 90.0 90.0 62.0 80.0 82.0 81.0 79.0
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03 04 04 02 01 01 01 03 02 03 04 04 01 02 04 02 01 04 04 02 01 03 04 01 02 02 01 03 03 02 01 04 01 01 02 04 04 02 04 01
怀化市2015下期高三期考成绩(怀化
考号 2901150802 2902150801 2902150808 2901150805 2902150815 2901150803 2902150806 2902150807 2902150812 2904150906 2904150901 2901150816 2902150814 2902150820 2902150809 2901150917 2904150904 2901150922 2901150825 2902150817 2904150905 2904150910 2903150932 2902150810 2902150818 2902151104 2901150920 2901150938 2904150930 2901150838 2902150941 2904150926 2902150828 2902150929 2904150918 2902150831 姓名 左良森 滕坛军 裴运申 刘藤藤 田玉堂 秦梅芳 陈林丽 向峰 向征 韩俊 陈丽平 张娟 邓茂娇 龚晶 满云冰 陈芳莉 颜雪 滕召秀 王梅 傅明芹 田芬 刘迎 刘文君 段凯 向文洋 滕鑫 张佳佳 滕梅芹 刘心怡 谭丽林 熊伟杰 张楠 滕诗梅 张绍鹏 陈慧林 满俊宏 班级 01 02 02 01 02 01 02 02 02 04 04 01 02 02 02 01 04 01 01 02 04 04 03 02 02 02 01 01 04 01 02 04 02 02 04 02 学校 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 麻阳民中 语文 90.0 104.0 82.0 99.0 89.0 91.0 90.0 95.0 88.0 91.0 87.0 88.0 96.0 96.0 102.0 80.0 86.0 105.0 88.0 95.0 88.0 93.0 88.0 95.0 97.0 100.0 101.0 100.0 87.0 94.0 89.0 94.0 81.0 83.0 91.0 87.0 理数 82.0 91.0 101.0 77.0 116.0 58.0 101.0 90.0 90.0 87.0 80.0 85.0 69.0 40.0 70.0 73.0 86.0 58.0 57.0 99.0 82.0 71.0 91.0 51.0 69.0 71.0 58.0 42.0 86.0 56.0 83.0 79.0 56.0 77.0 67.0 77.0
英语高考模拟卷-怀化市2015年高三第二次模拟考试英语试题及答案
湖南省怀化市2015年高三第二次模拟考试英语试题命题:刘蓉审题: 邓全生张兰英吴岚陈燕玲温馨提示:本试题卷分四个部分,包括听力理解、语言知识运用、阅读和书面表达共10页。
时量120分钟。
满分150分。
PartⅠListening Comprehension (30 marks)Section A (22.5 marks)Directions: In this section, you will hear six conversations between two speakers. For each conversation, there are several questions and each question is followed by three choices marked A, B and C. Listen carefully and then choose the best answer for each question.You will hear each conversation TWICE.Example:When will the magazine probably arrive?A. Wednesday.B. Thursday.C. Friday.The answer is B.Conversation 11. Why won’t the woman take psychology?A. The professor is not good.B. She has taken it before.C. She is not interested in it.2. What does the man plan to do this term?A. To do part-time work.B. To take many courses.C. To work as a journalist. Conversation 23. What did the woman think of Jack at first?A. He was not a good choice.B. He was suitable for the job.C. He knew much about sales.4. What made Calvin think that Jack was dishonest?A. His knowledge of IT.B. His story of working experience.C. His grades on the CV.Conversation 35. Who lost the semi-final of the World Snooker Championships?A. Judd Trump.B. Mark Selby.C. Ding Junhui.6. Where does Judd Trump come from?A. England.B. China.C. America. Conversation 47. What might the woman be?A. A reporter.B. A waitress.C. A teacher.8. What was the man doing when the fire broke out?A. Sleeping.B. Discussing something.C. Watching TV.9. How did the man escape from the fire successfully?A. By climbing down from the outside.B. By taking the lift.C. By running down the stairs.Conversation 510. What’s the possible relationship between the speakers?A. Friends.B. Strangers.C. Classmates.11. What’s the usual weather like for March in New York?A. Cool.B. Dry.C. Very hot.12. How often should the bus come?A. Every 20 minutes.B. Every 15 minutes.C. Every 30 minutes. Conversation 613. Why does the man choose the evening train?A. It’s cheap.B. It’s fast.C. It’s time-saving.14.Which train did the man take?A. D818.B. D808.C. D801.15. How much did the man pay in all?A. 1000 yuan.B. 960 yuan.C. 986 yuan.Section B (7.5 marks)Directions: In this section, you will hear a short passage. Listen carefully and then fill in the numbered blanks with the information you have heard. Fill in each blank with NO MORE THAN THREE WORDS. You will hear the short passage TWICE.Part ⅡLanguage Knowledge (45 marks)Section A (15 marks)Directions: Beneath each of the following sentences there are four choices marked A, B,C and D. Choose the one answer that best completes the sentence.21.Modern Chinese technology _____ good progress in the last decade.A. has madeB. had madeC. makesD. made22. Most Americans prefer private schools, _____, they believe, offer better education.A. thatB. whereC. whenD. which23. The electronic dictionary that I got _____ the other day cost me much money.A. repairedB. repairingC. to repairD. to be repaired24. The boss left the meeting room angrily, _____ he was strongly against the plan.A. to meanB. meaningC. meanD.meant25. Chinese people are hopeful for _____ 2015 will bring for their families and the country.A. howB. whichC.whatD. that26. Look ! A national basketball match _____ live on TV.A. is broadcastingB. has broadcastC. is being broadcastD. was broadcast27. There is nothing wrong with surfing the Internet _____ it doesn’t keep you from doingsomething important.A. untilB. unlessC. thoughD. if28. We are looking for a teacher, especially _____ with patience and imagination.A. itB. oneC. thatD. the one29. Was it _____ the conference of APEC that made Shanghai the focus of the world?A. holdingB. to holdC. having been heldD. held30. It is suggested that children _____ to school at seven years old.A. sendB. should sendC. will be sentD.be sent31. The New York Times _____ widely accepted in America.A. hasB. isC. areD. have32. Nowhere else in the world ______ cheaper Prada handbags than in Paris.A. a tourist can findB. can a tourist findC. a tourist will findD. had a tourist found33. —I don’t think you have seen the new film Cinderella.—But I_____ it last night.A. will seeB. seeC. sawD. have seen34. Everyone in the city is sure to benefit from the new shopping mall _____ next year.A. to be completedB. having completedC. completedD. completing35. I told Lily how to get here, but perhaps I _____ it out for her.A. must have writtenB. should writeC. had to writeD. ought to have writtenSection B (18 marks)Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentence.A few weeks ago, I was taking a quiet 36 in my backyard. When I came to the maple tree, I saw a baby bird 37 on the grass. Looking up, I saw the nest high in the branches. The baby had fallen from the tall tree and I was sure it was dead. 38 it moved when I reached down to pick it up. Its bald head was moving slightly from side to side 39 its mother.Amazed, I knew what I should do next. I got a 40 from my basement and placed it against the tree. It was then that I heard a sound “miaow”. Looking through the leaves, I saw the culprit (肇事者), a neighborhood cat. He must have shaken the bird out of the 41 and gotten himself trapped up in the tree as well. Climbing up through the branches, I 42 him, gave him a scolding and dropped him softly to the ground. Then I gently picked up the baby bird and slowlyreached my arm out as 43 as I could to place it in the nest.In the following weeks I have looked up the nest several times, but have only been able to see the mother bird. I may never know whether the baby that I 44 remains alive or not, but trying is 45 . Sometimes we don’t get to know if our efforts have 46 a difference or not. Sometimes we have to just hold the belief and do good to others. Sometimes love has to be its own 47 .36. A. walk B. rest C. sleep D. hike37. A. running B. lying C. flying D. jumping38. A. Slowly B. Immediately C. Suddenly D. Finally39. A. looking out B. looking at C. looking for D. looking into40. A. ladder B. chair C. torch D. cage41. A. hole B. backyard C. branches D. nest42. A. guided B. seized C. protected D. blamed43. A. thick B. shallow C. deep D. far44. A. saved B. controlled C. changed D. held45. A. simple B. enough C. quick D. obvious46. A. told B. formed C. settled D. made47. A. source B. respect C. reward D. reactionSection C (12 marks)Directions: Complete the following passage by filling in each blank with one word that best fits the context.In the future, air travel could be 48 expensive, thanks to a new aircraft design which plans to seat passengers facing each other in rows.The design is intended 49 save space and money. Howard Guy, director of the UK company Design Q, said the design could see a 50 percent increase in 50 number of passengers and a 30 percent reduced cost of a seat. 51 , he did admit that the seats would not be comfortable as traditional ones. Another drawback to the seating design is 52 food carts would not be able to pass down the plane 53 the aisles(走廊) are too narrow.Some travelers have doubts about the new seating, while 54 support the idea. “Soldiers are used to traveling in that way 55 have a positive reaction to the idea,” Guy said.Part ⅢReading Comprehension (30 marks)Directions: Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage.AChildren love to play and laugh throughout their days at school or at home. Finding the time to laugh with your children may be the best thing you can do for the relationship. Encourage your children to develop a good humor by laughing at the jokes they make up on the spot. This will help them grow confident and build their self-esteem. If you do not get the joke, you can ask why they think the joke is funny.Honest feedback will help your children develop funnier jokes. You can take them to your local library and have them pick up a few joke books. Then you can head back home or out to the park and read it together for a good laugh. You can take turns reading jokes to each other from the book or make up a few yourselves. But if they make a joke at the expense of another person, you may want to discuss the difference between making fun of yourself and making fun of others. In turn try not to make jokes at your children’s expense, you need to set an example that they can follow.Learning to laugh at oneself is a great quality to attain. You can set an example by laughing at your own mistakes. This is a great way to help reduce your own stress as well as your children’s. Laughing may make the situation seem lighter and easier to work through. By doing this your children will be better prepared to handle any difficulties.Most importantly laughing will bring you closer together as a family. You can have your family find different ways to laugh. You can play games. You can start a staring contest, arm wrestling contest, thumb wars contest and have a prize for the winners. You can all watch your best funny movies and act out the best parts together after the movies done. You could hold acontest to see who can make the other members of the family laugh more by doing something funny. Kids will be able to enjoy the good time they had with their parents. The family that laughs together stays together!56. If you often play and laugh with your children, you can .A. develop a good humorB. become proud and confidentC. make up some funny jokesD. get along well with each other57. The underlined word“them” refers to .A. funny jokesB. interesting booksC. your childrenD. the family58. We can infer that when your children make mistakes you should .A. teach them to laugh at the mistakesB. blame them seriouslyC. punish them at onceD. tell them to do better in future59. The author advises in Para.4 that people make their family members laugh by .A. having a partyB. having some kinds of contestsC. doing some houseworkD. reading joke books60. What can be the best title for the text?A. The More You laugh, the Better You’ll BeB. Laughing Every Day Is SimpleC. How to Laugh in Everyday LifeD. Laughter Is Good for Your FamilyBDanish scientists studied more than 1,000 healthy joggers and non-joggers over a 12-year period. Those who jogged at a steady pace for less than two and a half hours a week were least likely to die in this time. But those who ran more than four hours a week or did no exercise had the highest death rates.Analysing questionnaires filled out by all the people in the study, scientists concluded the ideal pace was about 8km/h and that it was best to jog no more than three times a week or for 2.5hours in total. People who jogged more closely—particularly those who jogged more than three times a week or at a pace of more than11km/h—were as likely to die as those who did no exercise.Researcher Jacob Louis Marott, from the Frederiksberg Hospital in Copenhagen, said: "You don't actually have to do that much to have a good impact on your health.”"And perhaps you shouldn't actually do too much. No exercise recommendations across the world mention an upper limit for safe exercise, but perhaps there is one."Scientists are not yet sure what is behind this trend —but they say changes to the heart during extreme exercise could contribute. In their report, they suggest: "Long-term strenuous exercise may change pathological (病理的) structure of the heart and arteries (动脉)."Maureen Talbot, senior cardiac nurse at the British Heart Foundation, said: "This study shows that you don't have to run marathons to keep your heart healthy.""Light and moderate jogging was found to be more beneficial than being inactive or undertaking strenuous jogging, possibly adding years to your life.""National guidelines recommend we do 140 minutes of moderate-intensity activity a week.""If it may sound like a lot for you, brisk walking (快走)is also a good exercise. And if you’re bit of a couch potato, this is a good place to start.61. From paragraph one, we could know ______.A. the study took 10 yearsB. more than 1000 joggers took part in the studyC. people with no exercise had the highest death ratesD. joggers and non-joggers are likely to die62. How should we jog properly from the study?A. Jog at a pace of about 8km/h no more than three times a week.B. Jog at a pace of about 11km/h for 2.5 hours in total in a week.C. Jog at a pace of about 11km/h more than three times a week.D. Jog at a pace of about 8km/h for 2.5 hours a day.63. The underlined word “strenuous” means ______.A. lightB. strongC. enoughD. frequent64. According to the passage, which of the following is Not True?A. There isn’t an upper limit for safe exercise across the world now.B. Running marathons helps keep your heart healthy.C. Light and moderate jogging may help people live longer.D. The moderate-intensity activity time in a week could be about 140 minutes.65. What is the main idea of the passage?A. Jogging everyday is good to health.B. Brisk walking is better than jogging.C. Jogging is not a good activity for people who suffer heart diseases.D. Jogging too much is no better than doing no exercise.CIn Silicon Valley, it's never too early to become an entrepreneur. Just ask 13-year-old David Moore. The eighth-grader has launched a company last October to develop low-cost machines to print Braille (布莱叶盲文). David built a Braille printer with a Lego Mindstorms EV3 kit as a school science fair project last year after he asked his parents a simple question: How do blind people read? "Google it," they told him. David then did some online research and was shocked to learn that Braille printers cost at least $2,000 —too expensive for most blind readers."I just thought that price should not be there. I know that there is a simpler way to do this," said David, who demonstrated how his printer works at the kitchen table where he spent many late nights building it. David wants to improve the “Braigo”—a name that combines Braille and Lego—and develop a desktop Braille printer that costs around $350 and weighs just a few pounds, compared with current models that can weigh more than 20 pounds. "My end goal would probably be having most of the blind people ... using my Braille printer," said David, who lives in the Silicon Valley suburb of Santa Clara, just minutes away from Intel headquarters.After the Braigo won numerous awards and enthusiastic support from the blind community, David started Braigo Labs last summer with an initial $35,000 investment from his dad. "We asparents started to get involved more, thinking that he's on to something and this new way process has to continue," said his father, Matthew Moore, an engineer who works for Intel.Intel officials were so impressed with David's printer that in November they invested an undisclosed sum in his start-up. They believe he's the youngest entrepreneur to receive venture capital money invested in exchange for a financial stake in the company. "He's solving a real problem, and he wants to go off and challenge an existing industry," said Edward Ross, director of Inventor Platforms at Intel. Now the company is using the money to hire professional engineers and advisers to help design and build Braille printers based on David’s ideas. It aims to have a prototype (样机) ready for blind organizations to test this summer and have a Braigo printer on the market later this year.66. Which of the followings is Not the description of Braigo?A. The name "Braigo" comes from Braille and Lego.B. The blind are in favor of the new type of printer.C. It costs less money and weighs just a few pounds.D. David planned to improve Braigo and make it lighter but easier to use.67. Which of the following words can best describe David’s personalities?A. Adventurous and enthusiastic.B. Trustworthy and active.C. Childish and outgoing.D. Creative and independent.68. Which of the following is the correct order?①. Intel officials invested money in David’s start-up.②. David launched a company.③. David got an initial $35,000 investment from his dad.④. David created a new Braille printer model called Braigo.⑤. Braigo Labs hired professional engineers and advisers to help design and build BraillePrinters.A. ④③②①⑤B. ④②⑤①③C. ③⑤④②①D. ②①④⑤③69. What can we learn from Paragraph 4?A. Intel didn’t announce the amount of money it invested.B. No one else has ever received venture capital from Intel.C. Intel purchased David’s ideas to design and build Braille printers.D. Braigo printers have been on the market and proved a great success.70. The passage is most probably taken from .A. a sports sectionB. a science sectionC. a culture sectionD. an entertainment sectionPart ⅣWriting (45 marks)Section A (10 marks)Directions: Read the following passage. Fill in the numbered blanks by using the information fromthe passage.Write NO MORE THAN THREE WORDS for each answer.The festival season is on us again and like every year, we work hard in terms of cleaning, cooking, shopping, and so on for the season. With it, it also brings a lack of sleep. This could be because you are feeling overworked and stressed out.We should always sleep for at least 6–8 hours but a recent survey has shown that more women than men do not get enough sleep and at times some women are functioning on less than five hours of sleep a day.Often, some choose sleeping tablets to aid their sleep. If you are going through an extreme period of stress or pain, your doctor may subscribe to you some sleeping tablets. However, they should be taken with care, as the body takes just two weeks to adjust to them and they are not as effective. Then there is a problem that they are dependent on sleeping tablets. So you can try the healthier alternatives listed below to deal with the sleeping problem.Use the bedroom to sleep—not as an extension of your office or entertainment center. Keep the TV switched off.Relax before going to bed. Drinking some milk and listening to music will be beneficial.Have a hot shower and keep the room cool. Often a temperature change can cause sleep.Don’t do anything which may raise anxiety levels just before bed. It takes your mind a long time to get calm after anxiety.Try to get to bed at the same time every day for a week, and wake up at the same time every day for a week. Once you get used to the routine, sleep will become a natural experience.So these are alternative ways of helping you to relax before bed. Try some or a combination of the above tips to experiment what suits you most.Title: How to deal with71. ______Section B (10 marks)Directions: Read the following passage. Answer the questions according to the information given in the passage. Section C (10 points)What I remember most about visiting my boyfriend’s parents is the loud tick of the clock in the dinner room as we silently ate our meal. With so little conversation I was quick to regard his family as cold. When we got into the car to go home, his father suddenly appeared. Carefully, he began to wash the car’s windscreen. I could feel he was a caring man through the glass.I learned another lesson about the ways of showing love. My father often telephoned me early in the morning. “Buy Printer. It’s a good sharp price,” he might say when I answered the phone. No pleasant greeting or inquiry about my life, just financial instructions. We often quarreled about it. But one day, I thought about my father’s success in business and realized that his concern for my financial security lay behind his short morning calls. The next time he called and told me to buy a stock, I thanked him.When my social style conflicted with that of my friends, I often felt disappointed. For example, I always returned phone calls without delay and regularly contacted with my friends. I expected the same from them. I had one friend called Ailsa who rarely called, answering my messages with short e-mails. I rushed to that judgment: She wasn’t a good friend! My anger grew as the holidays approached. But then she came to a gathering I hosted and handed me a beautiful dress I had fallen in love with when we did some window-shopping the previous month. I was shocked at her thoughtfulness. Clearly I needed to change my expectation of friends.81.What did the author hear when eating meal with her boyfriend’s parents?(No more than 11 words) (2 marks)82. Why did the author’s father often give her morning calls? (No more than 9 words) (2 marks)83. How did Ailsa change the author’s judgment about herself?(No more than 8 words) (3 marks)84. What’s the passage mainly about? (No more than 9 words) (3marks)Section C (25 marks)Directions: Write an English composition according to the instructions given below in Chinese.请阐述一件2015年你最期待的事情,谈谈你期待的原因及你在2015年的打算。
物理高考模拟卷-高三物理试题及答案-怀化市年高三第二次模拟考试理综
2015年怀化市高三第二次模拟考试理科综合能力测试命题:怀铁一中理科综合组审题:物理:怀化三中陈锋怀化一中尹智勤市教科院周乐灿化学:怀化三中赵群怀化一中李雪梅市教科院肖建成生物:怀化三中印文怀化一中黄冬芳市教科院邹安福本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
第Ⅰ卷 1 页至5 页,第Ⅱ卷 6页至16 页,共300分。
1.考生注意:答题前,考生务必将自己的姓名、准考证号涂写在答题卡上。
考生要认真核对答题卡上粘贴的条形码的“准考证号、姓名、考试科目”与本人的准考证号、姓名是否一致。
2.第I卷每小题选出答案后,用2B铅笔把答题纸上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其它答案标号。
第II卷用黑色字迹的签字笔或钢笔分别填写在试卷答题纸规定的位置上。
在试题卷上作答,答案无效。
3.考试结束后,监考人员将试题卷、答题卡一并收回。
第Ⅰ卷(选择题共126分)本卷共21小题,每小题6分,共126分以下数据可供解题时参考:可能用到的相对原子质量H-1 C-12 N-14 O-16 Na-23 Cl-35.5二、选择题:本题共8小题,每小题6分。
在每小题给出的四个选项中,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求。
全部选对的得6分,选对但不全的得3分,有选错的得0分。
14.在人类对物质运动规律的认识过程中,许多物理学家大胆猜想、勇于质疑,取得了辉煌的成就,下列有关科学家及他们的贡献描述中正确的是A.安培发现了电流的热效应规律B.奥斯特由环形电流和条形磁铁磁场的相似性,提出分子电流假说,解释了磁现象电本质C.开普勒潜心研究第谷的天文观测数据,提出行星绕太阳做匀速圆周运动D.伽利略在对自由落体运动研究中,对斜面滚球研究,测出小球滚下的位移正比于时间的平方,并把结论外推到斜面倾角为90°的情况,推翻了亚里士多德的落体观点【答案】D【命题立意】本题旨在考查物理学史【解析】电流的热效应规律是焦耳发现的,A错误;安培提出分子电流假说,解释了磁现象电本质,B错误;哥白尼提出行星绕太阳做匀速圆周运动,C错误。
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113.0 109.0 95.0 108.0 115.0 106.0 114.0 106.0 114.0 106.0 98.0 110.0 116.0 103.0 108.0 113.0 109.0 99.0 113.0 101.0 100.0 112.0 104.0 106.0 100.0 110.0 107.0 102.0 96.0 101.0 91.0 106.0 107.0 103.0 97.0 110.0 104.0 108.0
怀化三中 怀铁一中 会同一中 辰溪一中 辰溪一中 沅陵一中 会同一中 靖州一中 怀化三中 怀化三中 怀化三中 凤凰华鑫 凤凰高中 麻阳一中 中方一中 凤凰华鑫 沅陵一中 溆浦一中 怀化三中 怀化三中 芷江一中 会同一中 怀化三中 怀化三中 怀铁一中 辰溪二中 怀铁一中 怀化三中 怀化一中 怀铁一中 靖州一中 靖州一中 会同一中 溆浦一中 溆浦一中 沅陵一中 沅陵一中 沅陵一中
谢成元 冯旭 邓明 刘玉洁 田淇予 雷尧 杨俊杰 申家豪 郑字佳 龙华强 张志来 向宇森 罗娟 罗平明 张清 朱家宬 郑欣悦 李昌眉 石珧 黄祺航 李程 何玉玲 杨远洋 刘昆俐 罗佳琪 侯悦颜 杨成仁 邱俊滔 张卫萍 张杰 郑阳昊 张峰 宋友爱 梁雨琪 杨沂川 肖哲 熊胗婷 杨洁
12 03 03 02 21 31 03 03 05 31 37 32 03 17 17 16 11 32 37 37 01 11 02 03 32 11 24 01 02 03 02 21 11 37 37 03 03 01
会同一中 靖州一中 怀铁一中 怀化三中 怀化三中 辰溪一中 溆浦一中 怀化一中 会同一中 怀化三中 怀化三中 怀化三中 怀化三中 靖州一中 溆浦一中 新晃一中 会同一中 凤凰高中 沅陵一中 芷江一中 会同一中 溆浦一中 麻阳一中 麻阳一中 怀化三中 会同一中 沅陵一中 凤凰华鑫 怀化三中 怀化三中 怀化三中 通道一中 会同一中 怀化三中 怀化三中 怀化三中 会同一中 芙蓉中学
2001150605 3317150714 3001150705 4009151903 5731150401 2403151123 1201151405 5521151105 4011151914 3316150703 5731150407 1202151432 1428150315 1425150522 2403151116 1203151326 1203151406 1138150901 1710150803 2237151615 2237151403 2237150935 1201151311 3317150706 3316150704 4011151941 1203151331 2403151108 2403151126 3316150719 3002150703 1203151430 1201151534 1203151316 1425150402 1507150602 1648150602 2632151019
怀化市2015上期高三二模学生成绩(理科)2015041
考号 2237151635 2403151104 1203151308 5521151101 1425150203 1203151301 3317150701 2705150905 2705151013 1203151310 1203151303 1203151307 4011151907 3317150702 1203151312 2403151107 1203151324 4011151901 1423150723 1201151304 1203151401 1203151306 1203151319 2403151106 2502150902 1203151314 2403151101 2237150929 2237151630 1203151309 1203151505 1424150134 2403151102 4009151902 1425150612 姓名 梁久久 杨凡 宁坤奇 田雪飞 张媛 聂智林 张鑫 姚金圳 姚鸿波 刘晨 李柯霖 艾倍兆 彭志娴 伍舟云 沈悦 吴林烨 刘睿 曹力元 申毅杰 姚湘玲 谢平 廖星宇 郑惠文 易芳如 姚礼志 刘峰林 龙月 张秀华 梁林缘 余凌翔 刘鹤洋 张子阳 姚菁 谢育星 王皓 班级 37 03 03 21 25 03 17 05 05 03 03 03 11 17 03 03 03 11 23 01 03 03 03 03 02 03 03 37 37 03 03 24 03 09 25 学校 会同一中 靖州一中 怀化三中 凤凰高中 怀铁一中 怀化三中 溆浦一中 新晃一中 新晃一中 怀化三中 怀化三中 怀化三中 沅陵一中 溆浦一中 怀化三中 靖州一中 怀化三中 沅陵一中 怀铁一中 怀化三中 怀化三中 怀化三中 怀化三中 靖州一中 通道一中 怀化三中 靖州一中 会同一中 会同一中 怀化三中 怀化三中 怀铁一中 靖州一中 沅陵一中 怀铁一中 语文 115.0 109.0 128.0 111.0 100.0 112.0 107.0 103.0 118.0 104.0 119 117.0 107.0 111.0 101.0 109.0 106.0 108.0 96.0 109.0 105.0 97.0 105.0 115.0 99.0 94.0 114.0 113.0 105.0 107.0 104.0 111.0 103.0 105.0 98.0
沅陵一中 靖州一中 怀化三中 辰溪一中 凤凰高中 凤凰华鑫 靖州一中 靖州一中 怀化三中 凤凰华鑫 会同一中 芷江一中 怀化三中 溆浦一中 溆浦一中 溆浦一中 沅陵一中 芷江一中 会同一中 会同一中 辰溪一中 沅陵一中 怀化三中 怀化三中 芷江一中 沅陵一中 怀铁一中 怀化三中 怀化三中 怀化三中 麻阳一中 怀化三中高二 沅陵一中 会同一中 会同一中 怀化三中 怀化三中 怀化三中
2237151818 2403151111 1423151006 1203151328 1203151305 3002150702 3316150709 1138150904 2237151719 1201151320 1203151302 1203151315 1203151511 2403151105 3317150708 2705151006 2237151701 5521151102 4011151906 2632151001 2237151733 3317150725 2801150101 2801150102 1203151330 2237151325 4011151917 5731150404 1203151329 1203151317 1201151313 2502150901 2237151902 1203151332 1203151518 1203151404 2237151929 2001150602