最新-2018届黑龙江省大庆第一中学高三下学期第二次阶

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黑龙江省大庆第一中学2017-2018学年高一下学期第二次

黑龙江省大庆第一中学2017-2018学年高一下学期第二次

大庆一中高一年级下学期第二次阶段考试英语试题第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,并标在试卷相应的位置。

听完每段对话后,你都有10秒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.Where is the woman going?A.The Children’s park.B. The National MuseumC. The Financial Center2.What is the man going to do next?A.Fix the computerB. Make a phone callC. Wait for the repairer3.When may they see Tom?A.At 10:30B. At 10:20C. At 10:004.What is Danny?A. A teacherB. A touristC. A student5.How’s the weather now?A.SunnyB. WindyC. Rainy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至7题。

6.What is the conversation about?A.Offering a liftB. Buying a computerC. Asking for a favor7.Why does the woman call the man?A.To repair her computerB. To carry the boxC. To wait for the deliverer听第7段材料,回答第8至10题。

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试数学(理)试题附答案

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试数学(理)试题附答案

大庆一中高二年级下学期第二次阶段考试数学试题一、选择题(12×5=60)1、已知积分,则实数k =( )A. 2B.C. 1D.2、已知某物体的运动方程是s=+t ,则当t=3s 时的瞬时速度是( )A.B.C.D.3、P 为椭圆上异于左右顶点A 1、A 2的任意一点,则直线PA 1与PA 2的斜率之积为定值.将这个结论类比到双曲线,得出的结论为:P 为双曲线上异于左右顶点A 1、A 2的任意一点,则( )A. 直线与的斜率之和为定值B. 直线与的斜率之和为定值2C. 直线与的斜率之积为定值 D. 直线与的斜率之积为定值24、设函数()f x 在R 上可导,其导函数为()f x ',且函数(1)()y x f x '=-的图象如图所示,则下列结论中一定成立的是( )A .函数()f x 有极大值(2)f 和极小值(1)fB .函数()f x 有极大值(2)f -和极小值(1)fC .函数()f x 有极大值(2)f 和极小值(2)f -D .函数()f x 有极大值(2)f -和极小值(2)f 212-xyO5、幻方,是中国古代一种填数游戏.n (n ∈N *,n ≥3)阶幻方是指将连续 n 2个正整数排成的正 方形数阵,使之同一行、同一列和同一对角线上的 n 个数的和都相等.中国古籍《周易本义》中的《洛书》记载了一个三阶幻方(如图 1),即现在的图 2.若某3 阶幻方正中间的数是 2018,则该幻方中的最小数为( ) A. 2013B. 2014C. 2015D. 20166、函数()e3xf x x=的部分图象大致为( )A. B.C. D.7、设直线x t =与函数2(),()ln f x x g x x ==的图象分别交于点,M N ,则当||MN 达到最小时t 的值为( )A . 1B .12 C 5 D 28、已知函数()32231,0{ 1,0axx x x f x e x -+≥=+<在[]2,2-上的最大值为5,则实数a 的取值范围是( )A. [)2ln2,-+∞ B. []0,ln2 C. (],0-∞ D. [)ln2,-+∞9、函数的定义域是R,,对任意x∈R,,则不等式的解集为()f x 2)0(=f 1)()(>'+x f x f ()1x x e f x e >+( )A .{x|x>0}B .{x|x<0}C .{x|x<-1或x>1 }D .{x|x<-1或0<x<1}10、已知函数()g x 满足()()()121'102x g x g e g x x -=-+,且存在实数0x 使得不等式()021m g x -≥成立,则m 的取值范围为( )A. [)1,+∞ B. (],3-∞ C. (],2-∞ D. [)0,+∞11、已知函数f(x)=ax 3-3x 2+1,若f(x)存在唯一的零点x 0,且x 0>0,则a 的取值范围是( ) A.B.C.D.12、对于任意的实数[]1,x e ∈,总存在三个不同的实数[]1,4y ∈-,使得21ln 0yy xe ax x ---=成立,则实数a 的取值范围是( )A. 23161,e e e ⎡⎫-⎪⎢⎣⎭ B. 3160,e ⎛⎤ ⎥⎝⎦ C. 23163,e e e ⎡⎫-⎪⎢⎣⎭ D. 3163,e e ⎡⎤⎢⎥⎣⎦二、填空题(4×5=20)13、已知函数(x ∈R)上任一点处的切线斜率则该函数的单调递增区间为)(x f y =))(,(00x f x 200)1)(3(+-=x x k _____________14计算定积分 =________________15、已知函数f(x)与f′(x)的图象如图所示,则函数g(x)=的递减区间为__________.f xe x 16、若函数有两个极值点,其中,且2()ln 2f x x ax bx a b =-++--12,x x 10,02a b -<<>,则方程的实根个数为 .221()f x x x =>22[()]()10a f x bf x +-=三、解答题(合理写出解题步骤)17、已知二次函数的图像与直线 相切于点,(1)求函数 的解析式;(2)求由的图像、直线及直线所围成的封闭区域的面积.18、已知函数()316f x x x =+-.(1)求曲线()y f x =在点()2,6-处的切线的方程.(2)若直线l 为曲线()y f x =的切线,且经过坐标原点,求直线l 的方程及切点坐标.19、某礼品店要制作一批长方体包装盒,材料是边长为60cm 的正方形纸板.如图所示,先在其中相邻两个角处各切去一个边长是xcm 的正方形,然后在余下两个角处各切去一个长、宽分别为30cm 、xcm 的矩形,再将剩余部分沿图中的虚线折起,做成一个有盖的长方体包装盒.(1)求包装盒的容积()V x 关于x 的函数表达式,并求函数的定义域;(2)当x 为多少时,包装盒的容积最大?最大容积是多少?20、已知函数2()ln ,()x x f x x x g x e e==-.(Ⅰ)求函数()f x 在区间[1,3]上的最小值;(Ⅱ)证明:对任意,(0,)m n ∈+∞,都有()()f m g n ≥成立.21、已知函数,||ln )(2x x x f =(1)求函数的单调区间;)(x f (2)若关于的方程有实数解,求实数的取值范围.x 1)(-=kx x f k 22、已知函数2()ln(1)()f x x ax a x a R =---∈(1) 当1a =时,求函数()f x 的最值;(2) 求函数()f x 的单调区间;(3) 试说明是否存在实数(1)a a ≥使()y f x =的图象与5ln 28y =+无公共点二阶段数学考试答案A C C DB / D D D A A /CD 13【答案】14. 答案 15答案.(0,1),(4,+∞) 16. 答案 5[)+∞,317解:(1)由得,因为二次函数的图像与直线相切于点,所以,即,解得,因此.(2)作函数的图像、直线及直线的图象如下:则由的图像、直线及直线所围成的封闭区域的面积为;.18解析:(1)()231f x x ='+.2所以在点()2,6-处的切线的斜率,∴切线的方程为1332y x =-;4(2)设切点为()00,x y ,则直线l 的斜率为()20031f x x ='+,所以直线l 的方程为:()()2300003116y x x x x x =+-++-,6所以又直线l 过点()0,00=,∴()()23000003116x x x x x =+-++-,整理,得308x =-,∴02x =-,8∴()()30221626y =-+--=-,l 的斜率13k =,10∴直线l 的方程为13y x =,切点坐标为()2,26--.1219解析:(1)因为包装盒高h x =,底面矩形的长为602x -,宽为30x -,所以铁皮箱的体积()()()60230V x x x x =-⋅-⋅3221201800x x x =-+.函数的定义域为()0,30.(2)由(1)得,()()()26240180061030V x x x x x =-'-+=-,令()()()610300V x x x =-'-=,解得10x =.当()0,10x ∈时,()0V x '>,函数()V x 单调递增;当()10,30x ∈时,()0V x '<,函数()V x 单调递减.所以函数()V x 在10x =处取得极大值,这个极大值就是函数()V x 的最大值.又()()()()31060203010108000cm V =-⋅-⋅=.答:切去的正方形边长10x cm =时,包装盒的容积最大,最大容积是38000cm .20【答案】(Ⅰ)由()ln f x x x =,可得()ln 1f x x '=+.当1(0,()0,()x f x f x e'∈<单调递减,当1(,),()0,()x f x f x e'∈+∞>单调递增.所以函数()f x 在区间[1,3]上单调递增,又(1)0f =,所以函数()f x 在区间[1,3]上的最小值为0.(Ⅱ)由(Ⅰ)可知()ln ((0,))f x x x x =∈+∞在1x e=时取得最小值,又11()f ee =-,可知1()f m e ≥-.由2()x x g x e e =-,可得1'()x xg x e-=.所以当(0,1),'()0,()x g x g x ∈>单调递增,当(1,),'()0,()x g x g x ∈+∞<单调递减.所以函数()(0)g x x >在1x =时取得最大值,又1(1)g e=-,可知1()g n e≤-,所以对任意,(0,)m n ∈+∞,都有()()f m g n ≥成立.21解:(1)函数的定义域为且关于坐标原点对称)(x f R x x ∈|{}0≠x 为偶函数)(ln ||ln )()(22x f x x x x x f ==--=-)(x f ∴当时, 0>x )1ln 2(1ln 2)('2+=⋅+=x x xx x x x f 令 0)1ln 2()('>+=x x x f 01ln 2>+⇒x 2101ln 2->⇒>+⇒e x x ee x >⇒令0)1ln 2()('<+=x x x f 01ln 2<+⇒x 21001ln 2-<<⇒<+⇒e x x ee x <<⇒0所以可知:当时,单调递减, ),0(eex ∈)(x f 当时,单调递增, ),(+∞∈eex )(x f 又因为是偶函数,所以在对称区间上单调性相反,所以可得:)(x f当时,单调递增, )0,(eex -∈)(x f 当时,单调递减, ,(eex --∞∈)(x f 综上可得:的递增区间是:,; )(x f )0,(e e -),(+∞ee的递减区间是: , )(x f ,0(e e ),(ee --∞(2)由,即,显然, 1)(-=kx xf 1||ln )(2-==kx x x x f 0≠x 可得:令,当时, k x x x =+1||ln x x x x g 1||ln )(+=0>x xx x x g 1ln )(+= 211ln ')('x x x x x x g -⋅+=211ln xx -+=221ln x x x -+=显然,当10<<x 时,,单调递减, 0)1('=g 0)('<x g )(x g 当时,,单调递增,1>x 0)('>x g )(x g 时,0>∴x 1)1()(min ==g x g 又,所以可得为奇函数,所以图像关于坐标原点对称 )()(x g x g -=-)(x g )(x g 所以可得:当时,0<x 1)1()(max -=-=g x g ∴)(x g 的值域为 ∴k 的取值范围是 ),1[]1,(+∞--∞ ),1[]1,(+∞--∞ 22(1) 函数f(x)= x 2-ax-aln(x-1)(a∈R)的定义域是(1,+∞)当a=1时,'32()12()2111x x f x x x x -=--=--,所以f (x)在3(1,)2为减函数在3(,)2+∞为增函数,所以函数f (x)的最小值为3(2f =3ln 24+(2) '22()2()2,11a x x a f x x a x x +-=--=--若a≤0时,则21,2a +≤f(x)22()21a x x x +-=-0>在(1,+∞)恒成立,所以f(x)的增区间为(1,+∞).若a >0,则21,2a +>故当21,2a x +⎛⎤∈ ⎥⎝⎦,'()f x 22()21a x x x +-=-0≤,当2,2a x +⎡⎫∈+∞⎪⎢⎣⎭时,f(x) 22()21a x x x +-=-0≥,所以a >0时f(x)的减区间为21,2a +⎛⎤ ⎥⎝⎦,f(x)的增区间为2,2a +⎡⎫+∞⎪⎢⎣⎭.(3) a ≥1时,由(1)知f(x)在(1,+∞)的最小值为22(1ln 242a a af a +=-+-,令2()(2a g a f +=21ln 42a a a =-+-在 [1,+∞)上单调递减,所以max 3()(1)ln 2,4g a g ==+则max 51()(ln 2)88g a -+=>0,因此存在实数a(a≥1)使f(x)的最小值大于5ln 28+,故存在实数a(a≥1)使y=f(x)的图象与5ln 28y =+无公共点。

黑龙江省大庆一中高三数学下学期第二次阶段考试 理 新人教A版

黑龙江省大庆一中高三数学下学期第二次阶段考试 理 新人教A版

黑龙江省大庆一中2014年度高三年级下学期第二次阶段考试数学(理)试题一、选择题(本大题共12小题,每小题5分,满分60分.在每小题给出的四个选项中,只有一项符合要求)1.在复平面内,复数122ii -+对应的点的坐标为( )A .(0,1)B .(0,-1)C .(45,-35)D .(45,35) 2.设随机变量δ服从正态分布N (3,7),若p (δ>a+2)=p (δ<a -2),则a=( )A .1B .2C .D .4 3.已知某几何体的三视图(右上图),则该几何体的体积为( )A .4+52πB .4+32πC .4+2πD .4+π4.如右图,已知K 为如图所示的程序框图输出结果,二项式(xk+1x )n 的展开式中含有非零常数项,则正整数n 的最小值为( )A .4B .5C .6D .75.先后掷骰子(骰子的六个面分别标有1、2、3、4、5、6个点)两次落在水平桌面后,记正面朝上的点数分别为x 、y ,设事件A 为“x+y 为偶数”,事件B 为“x 、y 中有偶数,且x ≠y ”,则概率P(B|A)=( )A .12B .13C .14 D .256.正项等比数列{an }中,存在两项am 、an,且a6=a5+2a4,则14+的最小值是( )A .32 B .2 C .73 D .2567.函数f(x)=sin ωx+acos ωx (ω>0)的图象关于M (π,0)对称,且在x=π处函数有最小值,则a+ω的一个可能取值是( )A .0B .3C .6D .98.已知半径为5的球O 被互相垂直的两个平面所截,得到两圆的公共弦长为4,若其中一圆的半径为4,则另一圆的半径为( ) ABC.D9.设x 、y 满足约束条件223231x y x y x y --⎧⎪-⎨⎪+⎩≥≤≥,若x2+y2≥a 恒成立,则实数a 的最大值为( )A .12B .34C .45D .5610.若函数()()⎪⎩⎪⎨⎧<-⎪⎭⎫ ⎝⎛≥-=2,1212,2x x x a x f x是R 是的单调递减函数,则实数a 的取值范围是( )A. ()2,∞-B. ⎪⎭⎫⎢⎣⎡2,813C.()2,0D. ⎥⎦⎤ ⎝⎛∞-813, 11.已知向量b a ,是垂直单位向量,||c =13,⋅=3,4=⋅,对任意实数t1,t2,求|c -t1a -t2b |的最小值. ( ) A. 12 B. 13 C. 14 D. 14412. 已知函数,ln )(x e exx f -=,若)(503)2013(20121b a kef k +=∑=,则22b a +的最小值为( )A .6B .8C .9D .12二、填空题(本大题共4小题,每小题5分,满分20分.请将答案填在答题卡对应题号的位置上,答错位置,书写不清、模棱两可均不得分)13.已知函数f(x)=111xx e x ->⎩≤≤,则21()f x dx -⎰= .14.已知,71tan ,31tan -==βα且,2,20πβππα<<<<则βα-2的值_________15.某校高三(1)班的一次数学测试成绩的茎叶图和频率分布直方图都受到不同程度的破坏,但可见部分如下,据此解答如下问题:(1)频率分布直方图中[80,90)间的矩形的高为 . (2)若要从分数在[80,100]之间的试卷中任取两份分析学生失分情况,在抽取的试卷中,至少有一份分数在[90,100]之间的概率为 . 16.已知函数()()()()()()212,211122+<<'=∈x xf x f x f f R x x f 则不等式的导数,且满足的解集为______________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.(本小题满分12分) 在△ABC 中,c b a ,,分别为A ,B ,C 所对的边,且A c a sin 23=. (1)求角C 的大小;(2)若7=c ,且△ABC 的面积为233,求b a +值.18.(本小题满分12分)公安部最新修订的《机动车驾驶证申领和使用规定》于2013年1月1日起正式实施,新规实施后,获取驾照要经过三个科目的考试,先考科目一(理论一),科目一过关后才能再考科目二(桩考和路考),科目二过关后还要考科目三(理论二).只有三个科目都过关后才能拿到驾驶证.某驾校现有100名新学员,第一批参加考试的20人各科目通过的人数情况如下表:请你根据表中的数据:(Ⅰ)估计该驾校这100名新学员有多少人一次性(不补考)获取驾驶证;(Ⅱ)第一批参加考试的20人中某一学员已经通过科目一的考试,求他能通过科目二却不能通过科目三的概率;(Ⅲ)该驾校为调动教官的工作积极性,规定若所教学员每通过一个科目的考试,则学校奖励教官100元.现从这20人中随机抽取1人,记X 为学校因为该学员而奖励教官的金额数,求X 的数学期望. 19.(本小题满分12分)如图,在四棱锥P —ABCD 中,PA ⊥AD ,AB ∥CD ,CD ⊥AD ,AD = CD = 2AB = 2,E ,F 分别为PC ,CD 的中点,DE = EC(1)求证:平面ABE ⊥平面BEF ;(2)设PA = a ,若平面EBD 与平面ABCD 所成锐二面角[,]43ππθ∈,求a 的取值范围。

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试语文试题 Word版含答案

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试语文试题 Word版含答案

大庆一中高二年级下学期第二次阶段考试语文试题一、现代文阅读(36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。

中国旧小说的第三人称全知视角,是指叙述人并不进入作品,而是站在统揽全局的位置上,仿佛世间万事万物无所不知晓、无所不能表现。

如此,虽便于展现广阔的生活场景,自由地刻画、剖析人物,但失掉了文学联系生活和读者的最宝贵的东西:真情实感。

鲁迅对全知全能的外视角叙事的突破和改造,运用的是限制叙述原则。

所谓限制叙述,是指叙事者所知道的和书中的人物一样多,这就从根本上破除了作者那种居高临下妄断一切的专制态度,以有限的职能和平等态度建立起作者与读者的新型关系,从而赋予作品以真诚性和逼真感。

第一人称小说在《呐喊》和《彷徨》中超过半数。

第一人称叙事的一种情况是内部第一人称叙述,“我”是故事的主人公或当事人,如《狂人日记》。

鲁迅在必须真实的体裁——日记中去虚构一个“迫害狂”的文学故事。

当狂人成了小说的叙述者后,立刻把读者引入到他自己观察和体验到的世界,他对世俗社会、历史文化的“吃人”本质的认识,他的浓重的“罪感”意识和容不得吃人的人、救救孩子的精神挣扎,在常人看来是语无伦次甚至荒唐的格调中显示出惊人的真实性。

以第一人称叙述所冲淡和消解的文学故事的虚构性也许是《狂人日记》的最大艺术成功。

第一人称叙事的另一种情况是,“我”虽是故事的讲述人,却以旁观者的身份出现。

这可称之为外部第一人称叙述。

如《孔乙己》。

《孔乙己》中的“我”只是咸亨酒店的一个很不起眼的小伙计,他对周围的世界和社会世相没有多少明确的冷暖感受和是非观念,但孔乙己的穷酸、迂腐、落魄、善良和痛苦,以及这个世界对社会“苦人儿”的态度,都在他的带有童真的眼光和心灵中被不动声色甚至朦朦胧胧地折射出来。

读者自然会伴随着叙述人,开始以一种超然的、调侃的态度对待孔乙己,说不定还会“附和着笑”。

最后随着孔乙己的惨死而“我”的叙述口吻反倒越发轻松、平静起来时,表层叙述与真正意义的矛盾冲突也达到了高潮。

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试英语试题附答案

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试英语试题附答案

大庆一中高二年级下学期第二次阶段考试英语试题注意事项:1.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。

2.请将第Ⅰ卷的答案填涂在答题卡上;第Ⅱ卷非选择题部分的答案必须使用0.5毫米黑色签字笔书写在答题卷上,字体工整、笔迹清楚。

第I卷(三部分共 115分)第一部分:听力(共两节,满分30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,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 will Dorothy do on the weekend?A. Go out with her friend.B. Work on her paper.C. Make some plans.2. What was the normal price of the T-shirt?A. $15.B. $30.C. $50.3. What has the woman decided to do on Sunday afternoon?A. To attend a wedding.B. To visit an exhibition.C. To meet a friend.4. When does the bank close on Saturday?A. At l:00 pm.B. At 3:00 pm.C. At 4:00 pm.5. Where are the speakers?A. In a store.B. In a classroom.C. At a hotel.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。

黑龙江省大庆第一中学2018-2019学年高一下学期第二次阶段考试数学(文)试题 含解析

黑龙江省大庆第一中学2018-2019学年高一下学期第二次阶段考试数学(文)试题 含解析

大庆一中高二年级下学期第二次阶段考试文科数学试卷一、选择题(共12小题;共60分)1. ( )A. B. C. D.【答案】D【解析】【分析】根据复数的除法运算得到结果.【详解】=2-i.故选D.【点睛】这个题目考查了复数的除法运算,复数常考的还有几何意义,z=a+bi(a,b∈R)与复平面上的点Z(a,b)、平面向量都可建立一一对应的关系(其中O是坐标原点);复平面内,实轴上的点都表示实数;虚轴上的点除原点外都表示纯虚数.涉及到共轭复数的概念,一般地,当两个复数的实部相等,虚部互为相反数时,这两个复数叫做互为共轭复数,复数z的共轭复数记作.2.在极坐标系中,曲线是()A. 过极点的直线B. 半径为2的圆C. 关于极点对称图形D. 关于极轴对称的图形【答案】D【解析】试题分析:,表示圆心为半径为1的圆,关于极轴对称的图形,所以选D.考点:极坐标3.设,则()A. 既是奇函数又是减函数B. 既是奇函数又是增函数C. 是有零点的减函数D. 是没有零点的奇函数【答案】B【解析】试题分析:函数的定义域为,关于原点对称,,因此函数是奇函数,不恒等于0,函数是增函数,故答案为B.考点:函数的奇偶性和单调性.4.已知点P的极坐标是,则过点P且垂直极轴所在直线的直线方程是A. B. C. D.【答案】C【解析】分析:利用点P的直角坐标是,过点P且垂直极轴所在直线的直线方程是,化为极坐标方程,得到答案.详解:点P的直角坐标是,则过点P且垂直极轴所在直线的直线方程是,化为极坐标方程为,即,故选:C.点睛:本题考查参数方程与普通方程之间的转化,得到过点P且垂直极轴所在直线的直线方程是,是解题的关键.5.可以将椭圆变为圆的伸缩变换是()A. B.C. D.【答案】D【解析】【分析】圆x2+y2=4化为,设伸缩变换为,代入椭圆方程,对应项系数相等,求出即可得到该伸缩变换。

【详解】解:圆x2+y2=4化为,令代入圆方程可得,即,由,故,,所以.故选:D.【点睛】本题考查了椭圆化为圆的伸缩变换公式,考查了计算能力,属于基础题.6.在极坐标系中,直线与圆的位置关系为()A. 相交且过圆心B. 相交但不过圆心C. 相切D. 相离【答案】B【解析】【分析】首先把直线和圆的极坐标方程转化为直角坐标方程,进一步可利用点到直线的距离公式求出结果.【详解】解:直线l:,转换为直角坐标方程为:.圆C:ρ=2cosθ,转换为直角坐标方程为:x2+y2=2x,整理得:(x﹣1)2+y2=1,所以圆心(1,0)到直线的距离d==r,所以直线与圆相交。

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试英语试题附答案

黑龙江省大庆第一中学2018-2019学年高二下学期第二次阶段考试英语试题附答案

大庆一中高二年级下学期第二次阶段考试英语试题注意事项:1.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。

2.请将第Ⅰ卷的答案填涂在答题卡上;第Ⅱ卷非选择题部分的答案必须使用0.5毫米黑色签字笔书写在答题卷上,字体工整、笔迹清楚。

第I卷(三部分共 115分)第一部分:听力(共两节,满分30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,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 will Dorothy do on the weekend?A. Go out with her friend.B. Work on her paper.C. Make some plans.2. What was the normal price of the T-shirt?A. $15.B. $30.C. $50.3. What has the woman decided to do on Sunday afternoon?A. To attend a wedding.B. To visit an exhibition.C. To meet a friend.4. When does the bank close on Saturday?A. At l:00 pm.B. At 3:00 pm.C. At 4:00 pm.5. Where are the speakers?A. In a store.B. In a classroom.C. At a hotel.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。

黑龙江省大庆第一中学2018-2019学年高一下学期第二次阶段考试数学(理)试题(含精品解析)

黑龙江省大庆第一中学2018-2019学年高一下学期第二次阶段考试数学(理)试题(含精品解析)

大庆一中高二年级下学期第二次阶段考试数学试题一、选择题(12×5=60)1.已知积分,则实数k=( )A. 2B. -2C. 1D. -1【答案】A【解析】【分析】先求出被积函数的一个原函数,利用微积分基本定理即可得出答案。

【详解】因为,所以,所以k+1=k,所以k=2.【点睛】本题主要考察微积分基本定理的应用,属于基础题。

2.已知某物体的运动方程是,则当时的瞬时速度是()A. B. C. D.【答案】C【解析】【分析】根据瞬时速度为位移对应导数值求解.【详解】当时的瞬时速度是为导函数在的值,因为,所以,因此当时的瞬时速度是,选C.【点睛】本题考查导数在物理上的应用,考查基本分析求解能力,属基础题.3.为椭圆()上异于左右顶点、的任意一点,则直线与的斜率之积为定值.将这个结论类比到双曲线,得出的结论为:为双曲线()上异于左右顶点、的任意一点,则( )A. 直线与的斜率之和为定值B. 直线与的斜率之和为定值2C. 直线与的斜率之积为定值D. 直线与的斜率之积为定值2【答案】C 【解析】【分析】验证直线PA 1与PA 2的斜率之积为定值即可.【详解】设 则即,,故选C.【点睛】本题主要考查了类比的思想,双曲线的简单性质,属于中档题.4.设函数在R 上可导,其导函数为,且函数的图像如题(8)图所示,则下列结论中一定成立的是A. 函数有极大值和极小值B. 函数有极大值和极小值C. 函数有极大值和极小值D. 函数有极大值和极小值【答案】D【解析】:则函数增;则函数减;则函数减;则函数增;【考点定位】判断函数的单调性一般利用导函数的符号,当导函数大于0则函数递增,当导函数小于0则函数递减5.幻方,是中国古代一种填数游戏.阶幻方是指将连续个正整数排成的正方形数阵,使之同一行、同一列和同一对角线上的个数的和都相等.中国古籍《周易本义》中的《洛书》记载了一个三阶幻方(如图),即现在的如图.若某3阶幻方正中间的数是2018,则该幻方中的最小数为()A. 2013B. 2014C. 2015D. 2016【答案】B【解析】【分析】根据三阶幻方对应关系可得结果.【详解】由题意得3阶幻方正中间的数是5时,幻方中的最小数为1;因此3阶幻方正中间的数是2018时幻方中的最小数为,选B.【点睛】本题考查合情推理,考查基本分析求解能力,属基础题.6.函数的部分图象大致为( )A. B.C. D.【答案】C【解析】【分析】可得为奇函数,,排除,当时,可得,在区间上单调递增,排除即可得到结论【详解】,定义域为,关于原点对称,,则,为奇函数,故排除,,故排除,当时,可得,当时,,为增函数,故排除故选【点睛】本题考查了函数的图象的判断,一般通过函数的定义域,值域,单调性,奇偶性,变化趋势等知识来解答。

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第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上,录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。

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的阅读下一小题,每段对话仅读一遍。

例:How much is the shirt?A £19.15B £9.15C £9.18答案是B1. What will Dorothy do on the weekend?A. Go out with her friendB. work on her paperC. Make some plans2. What was the normal price of the T-shirt?A. $15B. $30C. $503. What has the woman decided to do on Sunday afternoon?A. To attend a weddingB. To visit an exhibitionC. To meet a friend4. When does the bank close on Saturday?A. AT 1:00 pmB. AT 3:00 pmC.AT 4:00 pm5. Where are the speakers?A. In a storeB. In a classroomC. At a hotel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,每段对话和独白后有几个小题,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,听每段对话和独白前,你将有时间阅读各个小题,每小题5分钟;听完后,各小题给出5秒钟的作答时间。

每段对话和独白读两遍。

听第6段材料,回答第6、7题。

6. What do we know about Nora?A. She prefers a room of ownB. She likes to work with other girlsC. She lives near the city center7. What is good about the flat?A. It has a large sitting roomB. It has goodfurniture C. It has a big kitchen听第七段材料,回答第8、9题。

8. Where has Barbara been?A. Milan.B. Florence.C. Rome.9. What has Barbara got in her suitcase?A. Shoes.B. Stones.C. Books.听第8段材料,回答第10至12题。

10. Who is making the telephone call?A. Thomas Brothers.B. Mike Landon.C. Jack Cooper.11. What relation is the woman to Mr. Cooper?A. His wife.B. His boss.C. His secretary.12. What is the message about?A. A meeting.B. A visit to France.C. The date for a trip.听第9段材料,回答第13至16题。

13. Who could the man speaker most probably be?A. A person who saw the accident.B. The driver of the lorry.C. A police officer.14. What was Mrs. Franks doing when the accident took place?A. Walking along Churchill Avenue.B. Getting ready to cross the road.C. Standing outside a bank.15. When did the accident happen?A. At about 8:00 am.B. At about 9:00 am.C. At about 10:00 am.16. How did the accident happen?A. A lorry hit a car.B. A car ran into a lorry.C. A bank clerk rushed into the street.听第10段材料,回答第17至20题。

17. What is the talk mainly about?A. The history of the school.B. The courses for the term.C. The plan for the day.18. Where can the visitors learn about the subjects fornew student?A. In the school hall.B. In the science labs.C. In the classrooms.19. What can students do in the practical areas?A. Take science courses?B. Enjoy excellent meals.C. Attend workshops.20. When are the visitors expected to ask question?A. During the lunch hour.B. After the welcome speech.C. Before the tour of labs.第二部分:阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)AWhen Armida Armato’s daughter, Alexia, came home from school one day last year keen to go on a school trip to Ecuador, she wasn’t too sure how to feel. She was happy that her daughter could experience something she never did as a teen but was fearful of letting her travel to such a remote part of the world.Alexia was 16 at the time, a student at Westwood High School. The school sponsored a humanitarian trip for 26 students and two teachers to spend 18 days living in a mountain village to build a one-room school. Even though Armato trusted her daughter, the other students and the teachers, she was worried about the side effects from the travel vaccines, possible accidents, and medical care.Now that Alexia was home, Armato said she saw her daughter’s new maturity, greater confidence and independence. “This is the best thing I ever did,”Alexia said. “The experience was so eye-opening andlife-changing. You’re with people who are not as lucky as you are. They live in very poor conditions but they’re so happy and outgoing. You say, ‘My God. I’m taking everything for granted back home.’”She said they built a one-room school from scratch with no mechanical cement mixers. They used their hands, shovels and basic tools. She and another student lived with a local family in a small village about eight hours outside the capital, Quito. Despite the initial strangeness and knowing only basic Spanish, she said they grew very close and felt like a family.Every year, groups of students at Montreal High School like Alexia pack their bags and fly off with classmates and teachers to developing countries where they volunteer for a variety of projects.“Armato’s worries are very common among parents,”says Bill Nevin, a teacher at St. George’s High School. He organizes a humanitarian rip to India to the Sheela Bal Bhavan orphanage and says the three biggest fears families have are health, security and contact.21. When hearing the news that her daughter would go ona school trip to Ecuador, Armato was _______.A. proud and happyB. supportive but concernedC. fearful and nervousD. excited but puzzled22. The underlined phrase “from scratch”in Paragraph4 probably means “______”.A. having great helpB. using high technologyC. ending up in failureD. starting from the beginning23. What would be the best title for the text?A. Volunteering helps students grow and develop.B. School trips make parents worried about their children.C. Ecuador is the most attractive travel destination in the world.D. Brave Alexia dreams to work in Ecuador one day.BHomestay UK/Great BritainHere you will find a selection of homestay hosts and host families in the UK. If you want to learn more about the British host family of your choice, please click on information at www. Homestaybooking. Com. You will then see a personal introduction of the UK homestay host. If you don’t want to search yourself, just register forfree and receive our matching recommendations.Chika and Tara from London, the United Kingdom Information about the homestay hostChika is 28 years old. She is away from home most of the time. Tara is 18 years old. She is at home every day. They both speak English.Chika and Tara’s guests can stay for at least 5 nights and up to a maximum of 365 nights. Chika and Tara have no children living at home. It is a non-smoking residence(住宅). No pets live in this household. Information about the homestay accommodation The accommodation is in London. The name of the neighborhood is Greenwich. The distance to the city center is 1.6km. The next access point to public transport is at 15 m distance.Three guests can stay in Tara and Chika’s house at the same time. The following accommodation is generally available:Single room with shared use of the family bathroom *Size: 12.0 ㎡*Facilities: desk, Internet access, mirror, hairdryer and wardrobe(衣橱)*Price per night per person: £20.00 per night(one single)Twin room with shared use of the family bathroom *Size: 15.0 ㎡*Facilities: TV, desk, Internet access, mirror, hairdryer and wordrobe*Price per night per person:£20.00 per night(one guest)£17.00 per night(two guests)The room charge includes the following services: Internet access, regular room cleaning, breakfast, free use of the washing machine.Additional available service at an extra charge: Pick-up service(£60.00 one-way); Lunch(£6.00 per person per day); Dinner(£6.00 per person per night) Vegetarian(素食的) meals are available.24. Chika and Tara’s house would be a good choice for _______.A. a pet loverB. a heavy smokerC. a person who eats no meatD. one who needs a one-night stay25. What do we know about Chika and Tara’s house?A. It lies in the center of the city.B. It is not far away from Greenwich.C. Public transport is convenient there.D. The distance from the house to London is 1.6 km.26. If Mary chooses a twin room and pick-up service(two-way), how much should she pay per day? A. £140. B. £137. C. £80. D. £77CAs many as 4 out of every 1,000 infants born today have permanent hearing loss. When parents learn that their child has hearing loss, they are faced with many difficult decisions. These decisions can include choosing therapies and schools, as well as finding financial help for hearing aids or cochlear implants (人工耳蜗).Help Me Hear Foundation is a public charity that gives the gift of hearing to deaf children from families existing on very low incomes around the world. The foundation offers life-changing services for impoverished families, and provides real help forchildren with hearing impairment who may otherwise be left behind in schools or society due to their lack of hearing.Help Me Hear Foundation believes that a child’s first years of development are critical. Being able to hear is vital to human, and Help Me Hear Foundation seeks to provide a positive lasting impression on society through its programs. Help Me Hear Foundation has many goals, including relieving the burden on communities with hearing-impaired infants and children, and strengthening the social structure of families and neighborhoods.Recipients of Help Me Hear Foundation’s benefits receive state-of-the-art hearing devices that otherwise would cost thousands of dollars per child over the course of their lifetime. The Foundation raises money through donations for hearing aids and cochlear implants, which saves recipients and their families on average over $50,000 on related expenses.The Foundation tries to be a transparent charity, and wants to be a catalyst for allowing deaf and hearing-impaired children to develop in a typicalfashion alongside their peers.Needy families can obtain information on specific services, and find out about deafness education by visiting the Help Me Hear Foundation’s website. The website offers helpful information on how hearing aids work, and how hearing aids ease many of the learning and language challenges that hearing-impaired children deal with on a daily basis.27. Help Me Hear Foundation was probably set up to _____.A. build schools for deaf childrenB. research deaf children’s behaviorC. protect deaf children from being ignoredD. offer real help to poor deaf children28. We learn from the text that _____.A. the local government is in charge of the foundationB. the work of the foundation depends on donationsC. even blind children can turn to the foundationD. poor deaf African children cannot get help from the foundation29. Visit the foundation’s website, and you will learn about _____.A. the function of hearing aidsB. the specific services the foundation needsC. the challenges that children face every dayD. the prices of a variety of hearing aids30. For whom is the text most probably written?A. Poor parents who have deaf children.B. Doctors who want to improve skills.C. Students who cannot see the blackboard clearly.D. Teachers who have deaf children in their class.31. The author writes the text mainly to _____.A. tell how to avoid permanent hearing lossB. explain how hard a life deaf children liveC. introduce Help Me Hear FoundationD. advise people to give money to Help Me Hear FoundationDHave you ever noticed that the more you have the more you want? Let’s face it. Thinking our life is good enough doesn’t come naturally to many people. When we have high expectations of everything in life we will run into disappointment. Only when we are aware that needs are different from desires can we live with satisfaction.Here are a few ideas to help you be happier with what you have and who you are.Focus on what you are thankful for. Most people want things to be better than they are, or when things are going well, we forget to appreciate what we have. Learn to reflect on how much better things are than they could be. Focus on what you are thankful for. Write down 5 things you are grateful for right now.When we hold onto regrets from decisions we have made, it can really poison our well-being. Many people regret something they can no longer change, which ends up holding them back from moving forward in a more positive manner. What happened in the past is done and gone, so work to stay present and be mindful of the current moment to find more joy and fulfillment.When we use other people as the measuring stick for our personal success and quality of life we are likely to be less satisfied. Social comparisons can provide useful information when we try to learn from others, but they also hold our perspective in a discontented position. Compare yourself less with others so you can be satisfied more.When you are focused on your big ambitions and future goals you might elide the daily pleasures that surround you. Learn to slow down and absorb the wonder and beauty around you. Stay present and focus on the task you’re undertaking at the moment. Don’t let the life pass you by because you’re always on the go and distracted by ambition.Practice looking at life through the lens of contentment and it will become more natural.32. How can we live with contentment?A. To change our lifestyle.B. To have a motivation in life.C. To give less attention to what we are grateful for.D. To realize the difference between needs and desires.33. What’s the main idea of Paragraph 3?A. Make wise decisions.B. Know the present situationC. Let go of regrets.D. Remember the past.34. The underlined word “elide”(in Paragraph 5) probably means “__”.A. enjoyB. changeC. createD. neglect35. What should you do to put yourself in a good mood?A. Make time for simple pleasures.B. Learn from successful people.C. Focus on your future goals.D. Create chance to learn more.第二节七选五(共5小题;每小题2分,满分10分)Mary is digging in the ground for a photo, when along comes John. Seeing that there is no one in sight, John starts to scream. John’s angry mother rushes over and drives Mary away. Once his mum has gone, John helps himself to Mary’s potato.We’ve all experienced similar annoying tricks when we were young—the brother who stole your ball and then got you into trouble by telling your parents you had hit him. But Mary and John are not humans. They’re African baboons(狒狒). ___36___John’s scream and his mother’s attack on Mary could have been a matter of chance, but John was later seen playing the same tricks on others. ___37___ Studying behavior like this is complicated but scientists discovered apes(猿) clearly showed that they intended to cheat and knew when they themselves had beencheated. ___38___ An ape was annoying him, so he tricked her into going away by pretending he had seen something interesting. When she found nothing, she “walked back, hit me over the head with her hand and ignored me for the rest of the day.”Another way to decide whether an animal’s behavior is deliberate is to look for actions that are not normal for that animal. A zoo worker describes how an ape dealt with an enemy. “He slowly stole up behind the other ape, walking on tiptoe. When he got close to his enemy, he pushed him violently in the back, then ran indoors.”Wild apes do not normally walk on tiptoe. ____39___ But looking at the many cases of deliberate trickery in apes, it is impossible to explain them all as simple copying.It seems that trickery does play an important part in ape societies. ____40___ Studying the intelligence of our closest relative could be the way to understand the development of human intelligence.A. In most cases the animal probably doesn’t know it is cheating.B. An amusing example of this comes from a psychologist working in Tanzania.C. And playing tricks is as much a part of monkey behavior as it is of human behavior.D. So the psychologists asked his colleagues if they had noticed this kind of trickery.E. The ability of animals to cheat may be a better measure of their intelligence than their use of toolsF. This use of a third individual to achieve a goal is only one of the many tricks commonlyused by baboons.G. Of course it’s possible that it could have learntfrom humans that such behavior works, without understanding why.第三部分英语知识运用(共两节,满分45分)第一节完型填空(共20小题;每小题1.5分,满分30分)I am a mom of two young children whom we home-school.drive-thru lane, holding doors, etc. So, they are verydo "nice" things for others.store to pick up a few things which quickly turned into an entire cart load of stuff. We got into one of the twohis basket. I told him to go ahead of us as we were inHe seemed very pleasantly surprised and graciouslythey moved around and they were generally very entertaining. (To me, anyway.)I could see the young man watching and listening witha smile on his face.bubble-gum and asked the clerk to ring it through twice before putting it back. He then told my kids that hehim go ahead in the queue.The experience really drove home the 60 that good begets(产生,引起) good for my lovely little kiddos(亲呢的称呼:小伙子).41. A.tells B. leaves C. means D. ensures42. A.entertain B. serve C.functionD. perform43. A.important B.impressiveC.suitableD. simple44. A.satisfied B. occupied C.familiarD. pleased45. A.supported B. taught C.encouragedD. supposed46. A. near B. by C. with D. against47. A.opportunityB. returnC. turnD. time48. A. fruit B.vegetablesC. itemsD. sales49. A. time B. hurry C. case D. sense50. A. accepted B.collectedC. carriedD. agreed51. A. change B. remove C.continueD. stop52. A. badly B. poorly C. well D. ill53. A.constantly B.immediatelyC. usuallyD. rudely54. A. belt B. bench C. basket D. cart55. A. her B. his C. their D. our56. A. complainabout B. allow for C. ask for D. concernabout57. A. So B. But C. Or D. For58. A. when B. unless C. because D. until 59. A. happy B. helpful C. serious D. nice 60. A. idea B. reward C. chance D.instruction 第二节语法填空(共10小题;每小题1.5分,满分15分) 阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空,并将答案填写在答题卡标号为61-70的相应位置上。

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