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thrift of excellent traditional and style lack deep of understanding, one-sided think in now of good situation Xia, economic smooth more fast development, and reform made major progress, and people living significantly improve, and social the career made new progress, no necessary always hard has, no awareness to China also has many poverty area, and also has many poverty population of exists, more living improve has, more need keep hard of style. Three is not strictly honest. Total thought units is a water sector, clean self-discipline away from himself too far, no real processing good living of improve and hard, and thrift excellent traditional of relationship, no effective do comply with Constitution and party of regulations must from I do up, no right mercy good bitter Le, and wealth of relationship, no right awareness to in comply with Constitution and party of regulations aspects everyone has accountability. Four, future direction and improvement measures 1, belief and faith, strengthen party spirit. One is to firmly establish the noble ideals of struggle for the ideals of communism, communist struggle for life, ready to sacrifice everything for the party and the people. Second is to continuously improve the quality and standard of political, conscientiously study Deng Xiaoping theory and "three represents" important thought and the scientific Outlook on development, implement the party's basic program for the primary stage of socialism, adhere to the correct political orientation, maintain highly consistent with the CPC Central Committee, is good at theories of socialism with Chinese characteristics to analyze and solve problems. Third, strengthening the party spirit and the world transformation, perseverance of the party Constitution, relive Party vows to establish correct world Outlook, Outlook on life and the world, practically embodies ideals and beliefs into action, combine lofty ideals and practical activities, transforming the objective world, actively participate in the great practice of building socialism with Chinese characteristics. 2, keep the purpose in concept, changing the style of work. First, keep in mind that the purpose of serving, adhere to assuming power for the people, keep in mind the people and care about people, and the joys and sorrows of the masses, ...
According to city discipline, and municipal organization Department requirements, today we held "implement implementation independent Commission against corruption guidelines effective strengthening led cadres style construction" topic democratic life, main task is close contact thought, and work actual, control check district Standing Committee team and the personal in implementation independent Commission against corruption guidelines Shang exists of problem, in-depth carried out criticism and self-critical, further clear rectification direction and measures, effective enhanced clean politics of consciousness and initiative, firm set good of ruling image. Before the meeting, the way we take surveys solicited a views, combed, related to team building
绝密★启用前
2010年普通高等学校招生全国统一考试
理科数学
第I卷(选择题)
注意事项:
1.答第I卷前,考生务必将自己的姓名、准考证号、考试科目涂写在答题卡上。
2.每小题选出答案后,用铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。不能答在试题卷上。
3.本卷共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。
参考公式:
如果事件互斥,那么 球的表面积公式
如果事件相互独立,那么 其中R表示球的半径
球的体积公式
如果事件A在一次试验中发生的概率是,那么
次独立重复试验中事件恰好发生次的概率 其中R表示球的半径
一、选择题
(1)复数
(A) (B) (C) (D)
(2)函数的反函数是
(A) (B)
(C) (D)
(3)若变量满足约束条件则的最大值为
(A)1 (B)2 (C)3 (D)4
(4)如果等差数列中,,那么
(A)14 (B)21 (C)28 (D)35
(5)不等式的解集为
(A) (B)
(C) (D)
(6)将标号为1,2,3,4,5,6的6张卡片放入3个不同的信封中.若每个信封放2张,其中标号为1, 2的卡片放入同一信封,则不同的方法共有
(A)12种 (B)18种 (C)36种 (D)54种
(7)为了得到函数的图像,只需把函数的图像
(A)向左平移个长度单位 (B)向右平移个长度单位
(C)向左平移个长度单位 (D)向右平移个长度单位
(8)中,点在上,平方.若,,,,则
(A) (B) (C) (D)
(9)已知正四棱锥中,,那么当该棱锥的体积最大时,它的高为
(A)1 (B) (C)2 (D)3
(10)若曲线在点处的切线与两个坐标围成的三角形的面积为18,则 (A)64 (B)32 (C)16 (D)8
(11)与正方体的三条棱、、所在直线的距离相等的点
(A)有且只有1个 (B)有且只有2个
(C)有且只有3个 (D)有无数个
(12)已知椭圆的离心率为,过右焦点且斜率为的直线与相交于两点.若,则
(A)1 (B) (C) (D)2
第Ⅱ卷
注意事项:
1.用0.5毫米的黑色字迹签字笔在答题卡上作答。
2.本卷共10小题,共90分。
二、填空题:本大题共4小题,每小题5分,共20分.[来源:学&科&网]
(13)已知是第二象限的角,,则 .
(14)若的展开式中的系数是,则 .
(15)已知抛物线的准线为,过且斜率为的直线与相交于点,与的一个交点为.若,则 .
(16)已知球的半径为4,圆与圆为该球的两个小圆,为圆与圆的公共弦,.若,则两圆圆心的距离 .
三、解答题:本大题共6小题,共70分.解答应写出文字说明,证明过程或演算步骤.
(17)(本小题满分10分)
中,为边上的一点,,,,求.
(18)(本小题满分12分)
已知数列的前项和.
(Ⅰ)求;(Ⅱ)证明:.
(19)(本小题满分12分)
如图,直三棱柱中,,,为的中点,为上的一点,.
(Ⅰ)证明:为异面直线与的公垂线;
(Ⅱ)设异面直线与的夹角为45°,求二面角
的大小.
(20)(本小题满分12分)
如图,由M到N的电路中有4个元件,分别标为T1,T2,T3,T4,电流能通过T1,T2,T3的概率都是p,电流能通过T4的概率是0.9.电流能否通过各元件相互独立.已知T1,T2,T3中至少有一个能通过电流的概率为0.999.
(Ⅰ)求p;
(Ⅱ)求电流能在M与N之间通过的概率;
(Ⅲ)表示T1,T2,T3,T4中能通过电流的元件个数,求的期望.
(21)(本小题满分12分)
己知斜率为1的直线l与双曲线C:相交于B、D两点,且BD的中点为.
(Ⅰ)求C的离心率;
(Ⅱ)设C的右顶点为A,右焦点为F,,证明:过A、B、D三点的圆与x轴相切.
(22)(本小题满分12分)
设函数.
(Ⅰ)证明:当时,;
(Ⅱ)设当时,,求a的取值范围.
参考答案
评分说明:
1.本解答给出了一种或几种解法供参考,如果考生的解法一本解答不同,可根据试题的主要考查内容比照评分参考制订相应的评分细则。
2.对计算题,当考生的解答在某一步出现错误时,如果后继部分的解答未改变该题的内容和难度,可视影响的程度决定后继部分的给分。但不得超过该部分正确解答应得分数的一半;如果后继部分的解答有较严重的错误,就不再给分。
3.解答右端所注分数,表示考生正确做到这一步应得的累加分数。
4.只给整数分数。选择题不给中间分。
一、选择题
1—6 ADCCCB 7—12 BBCADB
二、填空题
(13)- (14)1 (15)2 (16)3
三、解答题
(17)解:
由
由已知得 …………2分
从而
…………6分
由正弦定理得
所以
…………10分
(18)解:
(I)
…………4分
所以 …………6分
(II)当n=1时,
当时,
…………10分
所以,当 …………12分
19.解法一
(I)连结A1B,记A1B与AB1的交点为F。
因为面AA1B2B为正方形,故A1B⊥AB1,且
AF=FB1,又AE=3EB1,所以FE=EB1,又D
为BB2的中点,故DE//BF,DE⊥AB1。…………3分
作CG⊥AB,G为垂足,由AC=BC知,G为AB中点。
又由底面ABC⊥面AA2B1B,得CG⊥面AA1B1B,
连结DG,则DG//AB2,故DE⊥DG,由三垂线定理,得DE⊥∠∑。
所以DE为异面直线AB1与CD的公垂线。 …………6分
(II)因为DG//AB1,故为异面直线AB1与CD的夹角,
,
设AB=2,得
作B2H⊥A1C1,H为垂足,因为底面A1B1C1⊥面AA1C1C,故B1H⊥面AA2C2C,
又作HK⊥AC1,K为垂足,连结B2K,由三垂线定理,得
因此为二面角A1—AC1—B1的平面角。 …………9分
所以二面角 …………12分
解法二:
(I)以B为坐标原点,射线BA为x轴正半轴,建立如图所示的空间直角坐标系B—xyz,
设AB=2,则A(2,0,0),B1(0,2,0),D(0,1,0),
又设C(1,0,c),则…………3分
于是
故,
所以DE为异面直线AB1与CD的公垂线。 …………6分
(II)因为等于异面直线与CD的夹角。
故,
即
解得
又
所以 …………9分
设平面AA1C1的法向量为
则
即
令
设平面AB2C2的法向量为
则
即
令
所以
由于等于二面角A1—AC1—B1的平面角,
所以二面角A1—AC1—B1的大小为 …………12分
(20)解:
记A1表示事件,电流能通过
A表示事件:中至少有一个能通过电流,
B表示事件:电流能在M与N之间通过。
(I)相互独立,
又
故 …………4分
(III)由于电流能通过各元件的概率都是0.9,且电流能通过各元件相互独立。
故
…………12分
(21)解:
(I)由题设知,的方程为
代入C的方程,并化简得,
设
则①
由为B D的中点知故
即 ②
故
所以C的离心率
(II)由①、②知,C的方程为:
A(a,0),F(2a,0),
故不妨设
…………9分
又
故
解得(舍去)
故
连结MA,则由A(1,0),M(1,3)知|MA|=3,从而
MA=MB=MD,且MA⊥x轴,因此以M为圆主,MA
为半径的圆经地A、B、D三点,且在点A处与x轴相切,
所以过A、B、D三点的圆与x轴相切。 …………12分
(22)解:
(I)当时,
当且仅当
令 …………2分
当,是增函数;
当是减函数。
于是在x=0处达到最小值,因而当时,
所以当 …………6分、
(II)由题设
当不成立;
当则
当且令当
…………8分
(i)当时,由(I)知
是减函数,…………10分
(ii)当时,由(I)知
当时,
综上,a的取值范围是 …………12分
我乡在本轮隐患排查中共出动37组次,155人次进行安全隐患排查,对区域内山洪、堰渠、道路、输电线路铁塔等可能存在安全隐患的地方均进行多次安全排查project work, cadres, cadres selection and other aspects of a total of 19, further defined the direction of rectification, enhancing the pertinence and effectiveness of democratic life. Good for this meeting, we requested the Standing Committee of the municipal party Committee, municipal Secretary General Tang Wenjin, the City Commission for discipline inspection Standing Committee Yang Xu, Jiang Jixue, Deputy Director of the personnel office, and other leading comrades present guidance allows us to warm applause for their welcome and thanks! Below, I first District Committee member of the 20XX team annual democratic meeting implementation of the corrective measures, as well as member of the team and of my own report guidelines for the implementation of the independent Commission against corruption statement invited leaders and comrades criticism. First, annual party on the 20XX team, Member of democratic life action plan implementation year 20XX, district democratic meeting a member of the team on "study and practice the scientific Outlook on development" theme, find a project supporting strong enough, the industry well enough, urban construction management level needs to be improved, livelihood improvement needs to be strengthened, district team itself, such as the five aspects. Year of 20XX, we find out the problems mentioned above, based on actual Shunqing construction and development, conscientiously sum up improvements, achieving significant development results and effectiveness of their work. (A) highlight the project handle, maintain high growth of investment. Adhere to the strategy as a Foundation, carrying out projects to promote increased stamina important. One is to increase the intensity of projects towards. Actively seek national and provincial policy support, superior special transfer payments, a variety of additional income will top 700 million Yuan, a number of key infrastructure projects, livelihood projects, industrial projects into the cage. Second, increasing the project attracts. This year a total of 23 signed a major project, of which 14 billion project, China Metallurgical group, vanke group, Guangdong hengda group, Taiwan Ruentex group, on the RI group, Shenzhen Kaisa, jifeng agricultural machinery, Mercedes-Benz, Audi 4S store and other large enterprises and projects have settled in Shunqing. Third, strengthen project construction. Annual implementation focus project 39 a, fixed assets investment total will breakthrough 12 billion yuan, created district yilai history high, South door dam, and five in shop old city transformation, and Ying China industrial concentrated district construction, and city main road construction, and Northeast steam Trade Center, and modern farmers industry Park, and vocational education city, and low rental, and also room construction, and features blocks build, and farmers market transformation, and "rural version" Street transformation, focus engineering speed up implementation, effectiveness obviously. Expected to be achieved this year, area-wide GDP 17 billion
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