湖北省鄂东南省级市范高中教育教学改革联盟学校高三理综5月联考试题(扫描版)
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一、单选题1.已知双曲线的一个焦点在圆上,则双曲线的渐近线方程为( )A.B.C.D.2. 命题“,”的否定是( )A .,B .,C .,D .,3. 某人周一至周五每天6:30至6:50出发去上班,其中在6:30至6:40出发的概率为0.4,在该时间段出发上班迟到的概率为0.1;在6:40至6:50出发的概率为0.6,在该时间段出发上班迟到的概率为0.2,则小王某天在6:30至6:50出发上班迟到的概率为( )A .0.3B .0.17C .0.16D .0.134. 设复数z在复平面内对应的点位于第一象限,且,则的值为( )A.B.C.D.5. 天文学中为了衡量星星的明暗程度,古希腊天文学家喜帕恰斯(,又名依巴谷)在公元前二世纪首先提出了星等这个概念.星等的数值越小,星星就越亮;星等的数值越大,它的光就越暗.到了1850年,由于光度计在天体光度测量中的应用,英国天文学家普森()又提出了衡量天体明暗程度的亮度的概念.天体的明暗程度可以用星等或亮度来描述.两颗星的星等与亮度满足.其中星等为的星的亮度为.已知“心宿二”的星等是1.00.“天津四” 的星等是1.25.“心宿二”的亮度是“天津四”的倍,则与最接近的是(当较小时,)A .1.24B .1.25C .1.26D .1.276. 2023年“三月三”期间,广西交通部门统计了2023年4月19日至4月25日的高速公路车流量(单位:万车次),并与2022年比较,得到同比增长率(同比增长率=(今年车流量-去年同期车流量)÷去年同期车流量×100%))数据,绘制了如图所示的统计图,则下列结论错误的是()A .2023年4月19日至4月25日的高速公路车流量的极差为23B .2023年4月19日至4月25日的高速公路车流量的中位数为17C .2023年4月19日至4月21日的高速公路车流量的标准差小于2023年4月23日至4月25日的高速公路车流量的标准差D .2022年4月23日的高速公路车流量为20万车次7. 已知实数,满足,,其中是自然对数的底数,则的值为( )A.B.C.D.8.已知三棱锥的所有顶点在球的球面上,平面,是等腰直角三角形,,是的中点,过点作球的截面,则截面面积的最小值是A .B.C.D.湖北省鄂东南省级示范高中教育教学改革联盟学校2023届高三下学期5月模拟联考数学试题二、多选题9. 中国空间站(China Space Station )的主体结构包括天和核心舱、问天实验舱和梦天实验舱.2022年10月31日15:37分,我国将“梦天实验舱”成功送上太空,完成了最后一个关键部分的发射,“梦天实验舱”也和“天和核心舱”按照计划成功对接,成为“T ”字形架构,我国成功将中国空间站建设完毕.2023年,中国空间站将正式进入运营阶段.假设空间站要安排甲、乙等6名航天员开展实验,三舱中每个舱至少一人至多三人,则不同的安排方法有( )A .450种B .72种C .90种D .360种10. 某微信群中有甲、乙、丙、丁、戊五个人玩抢红包游戏,现有4个红包,每人最多抢一个,且红包被全部抢完,4个红包中有2个6元,1个8元,1个10元(红包中金额相同视为相同红包),则甲、乙都抢到红包的情况有A .18种B .24种C .36种D .48种11.已知数列满足,其前n 项和为,若,则( )A.B .0C .2D .412. 点到双曲线的一条渐近线的距离为,则双曲线的离心率为( )A.B.C.D .513.函数的定义域是A.B.C.D.14. 复数的虚部是( )A.B.C.D.15. 定义:设函数在上的导函数为,若在上也存在导函数,则称函数在上存在二阶导函数,简记为.若在区间上,则称函数在区间上为“凹函数”.已知在区间上为“凹函数”,则实数的取值范围为( )A.B.C.D.16. 若双曲线C :过点,则双曲线C 的离心率为( )A .2B .4C.D.17. 已知,下列说法正确的是( )A .时,B.若方程有两个根,则C .若直线与有两个交点,则或D .函数有3个零点18. 数学家切比雪夫曾用一组多项式阐述余弦的倍角公式,即,称为第一类切比雪夫多项式.第一类切比雪夫多项式的前几项为:,探究上述多项式,下列选项正确的是( )A.B.C.D.19. 下列命题中,正确的命题有()A.已知随机变量X服从正态分布且,则B.设随机变量,则C.在抛骰子试验中,事件,事件,则D.在线性回归模型中,表示解释变量对于预报变量变化的贡献率,越接近于1,表示回归的效果越好20. 进入21世纪以来,全球二氧化碳排放量增长迅速,自2000年至今,全球二氧化碳排放量增加了约40%,我国作为发展中国家,经济发展仍需要大量的煤炭能源消耗.下图是2016—2020年中国二氧化碳排放量的统计图表(以2016年为第1年).利用图表中数据计算可得,采用某非线性回归模型拟合时,;采用一元线性回归模型拟合时,线性回归方程为,.则下列说法正确的是()A.由图表可知,二氧化碳排放量y与时间x正相关B.由决定系数可以看出,线性回归模型的拟合程度更好C.利用线性回归方程计算2019年所对应的样本点的残差为-0.30D.利用线性回归方程预计2025年中国二氧化碳排放量为107.24亿吨21. 某地建立了农业科技图书馆,供农民免费借阅,收集了近5年的借阅数据如下表:年份20162017201820192020年份代码x12345年借阅量y/万册 4.9 5.1 5.5 5.7 5.8根据上表,可得y关于x的线性回归方程为,则()A.B.估计近5年借阅量以0.24万册/年的速度增长C.y与x的样本相关系数D.2021年的借阅量一定不少于6.12万册22. 已知椭圆的离心率为,,分别是的左、右焦点,过的直线与交于,两点,过的直线与交于,两点,当时,,则()A.椭圆的标准方程为B.椭圆的短轴长为2C.若,则直线的斜率的平方大于2D.当时,23. 某港口一天24h内潮水的高度S(单位:m)随时间t(单位:h,0≤t≤24)的变化近似满足关系式,则下列说法正确的有()三、填空题四、解答题A .在[0,2]上的平均变化率为m/hB .相邻两次潮水高度最高的时间间距为24hC .当t =6时,潮水的高度会达到一天中最低D .18时潮水起落的速度为m/h24. 如图,点是棱长为的正方体中的侧面上的一个动点(包含边界),则下列结论正确的是()A .有无数个点满足B.当点在棱上运动时,的最小值为C .若,则动点的轨迹长度为D .在线段上存在点,使异面直线与所成的角是25. 双曲线绕坐标原点旋转适当角度可以成为函数的图象,关于此函数有如下四个命题:① 是奇函数;②的图象过点或;③的值域是;④函数有两个零点;则其中所有真命题的序号为________.26.若,则_________.27.若,则_______________.28.已知集合则_____.29. 已知角,的顶点为坐标原点,始边与轴的非负半轴重合,角的终边与单位圆交于点,角的终边与角的终边关于轴对称,则______.30. 展开式中的常数项为_________.31. 在《九章算术》第五卷《商功》中,将底面为正方形,顶点在底面上的射影为底面中心的四棱锥称为方锥,也就是正四棱锥.已知球内接方锥的高为6,体积为48,则该球的表面积为__________.32. 某科技攻关青年团队共有8人,他们的年龄分别是29,35,40,36,38,30,32,41,则这8人年龄的25%分位数是______.33. 化简,并求函数的值域和最小正周期.34.已知(1)求的值;(2)若是第三象限的角,化简三角式,并求值.五、解答题35.已知数列满足.(1)求数列的通项公式;(2)求数列的前项和.36. 某同学解答一道解析几何题:“已知圆:与直线和分别相切,点的坐标为.两点分别在直线和上,且,,试推断线段的中点是否在圆上.”该同学解答过程如下:解答:因为圆:与直线和分别相切,所以所以由题意可设,因为,点的坐标为,所以,即. ①因为,所以 .化简得②由①②可得所以 .因式分解得所以或解得或所以线段的中点坐标为或.所以线段的中点不在圆上.请指出上述解答过程中的错误之处,并写出正确的解答过程.37.已知(1)化简;(2)若,求的值;(3)若,求的值.38. 已知函数,,.若,,且的最小值为,,求解下列问题.(1)化简的表达式并求的单调递增区间;(2)请完善表格并利用五点作图法绘制该函数在一个周期内的图象,并求在区间上的最值.39. 2020年某地在全国志愿服务信息系统注册登记志愿者8万多人.2019年7月份以来,共完成1931个志愿服务项目,8900多名志愿者开展志愿服务活动累计超过150万小时,为了了解此地志愿者对志愿服务的认知和参与度,随机调查了500名志愿者,得到其平均每月的志愿服务时长(单位:小时)频数分布表如下:500名志愿者平均每月的志愿服务时长频数分布表:服务时长频数1050100190904020(1)在答题卡上作出这500名志愿者平均每月的志愿服务时长的频率分布直方图;(2)求这500名志愿者每月志愿服务时长的样本平均数和样本方差(同一组中的数据用该组区间的中间值代表).40. “城市公交”泛指城市范围内定线运营的公共汽车及轨道交通等交通方式,也是人们日常出行的主要方式.某城市的公交公司为了方便市民出行,科学规划车辆投放,在一个人员密集流动地段增设一个起点站,为了研究车辆发车间隔时间x与乘客等候人数y之间的关系,经过调查得到如下数据:间隔时间(x分钟)68101214等候人数(y人)1518202423(1)根据以上数据作出折线图,易知可用线性回归模型拟合y与x的关系,请用相关系数加以说明;(2)建立y关于x的回归直线方程,并预测车辆发车间隔时间为20分钟时乘客的等候人数.附:对于一组数据,,…,其回归直线的斜率和截距的最小二乘估计分别为,;相关系数;.41. 在某市的一次数学测试中,为了解学生的测试情况,从中随机抽取100名学生的测试成绩,被抽取成绩全部介于40分到100分之间(满分100分),将统计结果按如下方式分成六组:第一组,第二组,,第六组,画出频率分布直方图如图所示.(1)求第三组的频率;(2)估计该市学生这次测试成绩的平均值(同一组中的数据用该组区间的中点值为代表)和第25百分位数.42. 已知四棱锥的底面为平行四边形,且平面ABCD,,,分别为中点,过作平面分别与线段相交于点.(1)在图中作出平面,使面平面SAD (不要求证明);(2)若,是否存在实数,使二面角的平面角大小为?若存在,求出的值,若不存在,请说明理由.43. 2018年“双十一”全网销售额达亿元,相当于全国人均消费元,同比增长,监测参与“双十一”狂欢大促销的家电商平台有天猫、京东、苏宁易购、网易考拉在内的综合性平台,有拼多多等社交电商平台,有敦煌网、速卖通等出口电商平台.某大学学生社团在本校名大一学生中采用男女分层抽样,分别随机调查了若干个男生和个女生的网购消费情况,制作出男生的频率分布表、直方图(部分)和女生的茎叶图如下:男生直方图分组(百元)男生人数频率合计女生茎叶图(1)请完成频率分布表的三个空格,并估计该校男生网购金额的中位数(单位:元,精确到个位).(2)若网购为全国人均消费的三倍以上称为“剁手党”,估计该校大一学生中的“剁手党”人数为多少?从抽样数据中网购不足元的同学中随机抽取人发放纪念品,则人都是女生的概率为多少?(3)用频率估计概率,从全市所有高校大一学生中随机调查人,求其中“剁手党”人数的分布列和期望.44. 如图,已知多面体EABCDF的底面ABCD是边长为2的正方形,,,且.六、解答题(1)记线段的中点为,在平面内过点作一条直线与平面平行,要求保留作图痕迹,但不要求证明;(2)求直线与平面所成角的正弦值.45. 已知,函数,.(1)讨论的单调性;(2)过原点分别作曲线和的切线和,求证:存在,使得切线和的斜率互为倒数;(3)若函数的图象与轴交于两点,,且.设,其中常数、满足条件,,试判断函数在点处的切线斜率的正负,并说明理由.46. 已知函数,,(1)设,讨论函数的单调区间;(2)求证:对任意正数a ,总存在正数x ,使得不等式成立.47. 在四棱锥中,平面,四边形为矩形,为棱的中点,与交于点为的重心.(1)求证:平面;(2)已知,,若与平面所成角的正切值为,求到平面的距离.48. 已知数列是各项为正的等比数列,满足,.数列的前n 项和为且满足,,对任意恒成立.(1)求,的通项公式;(2)数列满足,求证:.49. 设设是一个公差为的等差数列,它的前10项和,且成等比数列.(1)证明:;(2)求公差的值和数列的通项公式.50. 如图所示,已知是棱长为3的正方体,点E 在上,点F 在上,G 在上,且,H是的中点.七、解答题(1)求证:四点共面(2)求证:平面平面.51. 某厂分别用甲、乙两种工艺生产同一种零件,尺寸在[223,228]内(单位:mm )的零件为一等品,其余为二等品.在两种工艺生产的零件中,各随机抽取10个,其尺寸的茎叶图如图所示:(1)分别计算抽取的两种工艺生产的零件尺寸的平均数;(2)已知甲工艺每天可生产300个零件,乙工艺每天可生产280个零件,一等品利润为30元/个,二等品利润为20元/个.视频率为概率,试根据抽样数据判断采用哪种工艺生产该零件每天获得的利润更高?52. 我国是世界上严重缺水的国家,某市为了制定合理的节水方案,对居民用水情况进行了调查.通过抽样,获得了某年200位居民家庭的月平均用水量(单位:吨),将数据按照,分成6组,制成了如图所示的频率分布直方图.(1)求直方图中的值;(2)该市决定设置议价收费标准,用水量低于的居民家庭按照“民用价”收费,不低于的按照“商业价”收费,为保障有的居民能享受“民用价”,请设置该标准;(3)以每组数据的中点值作为该组数据的代表,分别是.规定“最佳稳定值”是这样一个量:与各组代表值的差的平方和最小.依此规定,请求出的值.53. 袋中装有大小相同的4个红球,2个白球.某人进行摸球游戏,一轮摸球游戏规则如下:①每次从袋中摸取一个小球,若摸到红球则放回袋中,充分搅拌后再进行下一次摸取;②若摸到白球或摸球次数达到4次时本轮摸球游戏结束.(1)求一轮摸球游戏结束时摸球次数不超过3次的概率;(2)若摸出1次红球计1分,摸出1次白球记2分,求一轮游戏结束时,此人总得分的分布列和数学期望.54. 某贫困县在政府“精准扶贫”的政策指引下,充分利用自身资源,大力发展茶叶种植.该县农科所为了对比两种不同品种茶叶的产量,在试验田上分别种植了两种茶叶各20亩,所得亩产数据(单位:千克)都在内,根据亩产数据得到频率分布直方图如下:(1)从种茶叶亩产的20个数据中任取两个,记这两个数据中不低于56千克的个数为,求的分布列及数学期望;(2)在频率分布直方图中,若平均数大于中位数,则称为“右拖尾分布”,若平均数小于中位数,则称为“左拖尾分布”,试通过计算判断种茶叶的亩产量属于上述哪种类型.55. 共享单车给市民出行带来了诸多便利,某公司购买了一批单车投放到某地给市民使用,据市场分析,每辆单车的营运累计利润y (单位:八、解答题元)与营运天数x ()满足函数关系式.(1)要使营运累计利润高于800元,求营运天数的取值范围;(2)每辆单车营运多少天时,才能使每天的平均营运利润的值最大?56.某种病菌在某地区人群中的带菌率为,目前临床医学研究中已有费用昂贵但能准确检测出个体是否带菌的方法.现引进操作易、成本低的新型检测方法:每次只需检测,两项指标,若指标的值大于4且指标的值大于100,则检验结果呈阳性,否则呈阴性.为考查该检测方法的准确度,随机抽取50位带菌者(用“*”表示)和50位不带菌者(用“+”表示)各做1次检测,他们检测后的数据,制成如下统计图:(1)从这100名被检测者中,随机抽取一名不带菌者,求检测结果呈阳性的概率;(2)能否在犯错误概率不超过0.001的前提下,认为“带菌”与“检测结果呈阳性”有关?(3)现用新型检测方法,对该地区人群进行全员检测,用频率估计概率,求每个被检者“带菌”且“检测结果呈阳性”的概率.附:.0.0500.0100.0013.8416.63510.82857.已知函数(1)当时,求函数的单调增区间;(2)求函数在区间上的最小值;(3)在(1)的条件下,设,证明:.(参考数据:)58. 如图,在四棱锥中,底面为矩形,侧面底面,侧棱和侧棱与底面所成的角均为,,为中点,为侧棱上一点,且平面.(1)请确定点的位置;(2)求平面与平面所成夹角的余弦值.59. 如图,在四棱锥中,侧面PAD 是边长为2的正三角形,平面平面PBC ,E 是AD的中点,,,.(1)证明:平面PBC ;(2)求平面PCD 与平面PAB 所成的锐二面角的余弦值.60. 已知椭圆的离心率为,椭圆的右焦点和抛物线的焦点相同.(1)求椭圆的方程.(2)如图,已知直线与椭圆及抛物线都有两个不同的公共点,且直线与椭圆交于两点;过焦点的直线与抛物线交于两点,记,求的取值范围.61. 若,求的值.62. 如图,在三棱柱中,侧面的面积为4,且四棱锥的体积为.(1)求点到平面的距离;(2)若平面平面,侧面是正方形,为的中点,,求平面与平面所成锐二面角的余弦值.。
鄂东南省级示范高中教育教学改革联盟学校 2024年五月模拟考高三地理试卷命题学校:黄冈中学考试时间: 2024年5月10日下午14:30—17:05 试卷满分: 100分一、选择题。
(共有15道小题,每小题只有一个选项符合题意,每小题3分,共45分)2024年2月初,湖北省遭遇严重的冰冻雨雪灾害天气,对交通、通讯、供电设施、植物等造成严重影响。
冻雨,又称“雨凇”,是过冷水滴落到低于0℃的物体上时,迅速冻结成外表光滑而透明冰层的降水现象。
此次气象灾害,湖北省交通“受伤”严重。
图1为冻雨景观图,图2为冻雨形成1.形成冻雨的关键因素有 ( )①过冷水②凝结核丰富③存在逆温层④近地面气温高于0℃A. ①②B. ①③C. ②③D. ②④2.湖北省本次遭受冻雨灾害最严重的植被类型是 ( )A.常绿硬叶林B.常绿阔叶林C.落叶阔叶林D.针阔混交林3.此次冻雨的发生对湖北省交通影响巨大,主要原因有 ( )①暴雪、冻雨齐袭,道路结冰严重②降雨量大,道路冲毁③气温回升快,积雪融化,路面湿滑④社会防灾准备不足⑤为中部交通枢纽,春节前返乡人车量大⑥输电线结冰,高铁停运A. ①②③④B. ①③④⑥C. ①④⑤⑥D. ②③⑤⑥伴随着城市经济向都市区经济的转变,城市空间加速向郊区扩张,远郊区域由此得到快速发展,郊区发展进入新的阶段——后郊区化。
图3为我国超大城市上海的后郊区化空间发育模式演变图。
据此完成4—6题。
鄂东南教改联盟学校2024年五月模拟考高三地理试卷 (共6页)第1页4.下列关于该城市后郊区化空间发育演变的特点,叙述正确的是 ( )①阶段一:生产要素郊区化明显,生活、消费要素郊区化缓慢②阶段二:一区多园现象开始出现③阶段三:生活、消费要素开始在郊区集聚④阶段三:新城成为郊区空间开发建设的重要载体A. ①②③B. ②③④C. ①③④D. ①②④5.阶段二的郊区空间开发模式是 ( .)A.产业园、工业区B.工业卫星城C.开发区、高新区D.新城、新区6.关于阶段三郊区要素空间重构的特点,以下说法不正确的是( )A.居住郊区化进程减慢B.后期新增企业以技术型、创新型为主C.远郊新城功能空间更加复杂多样D.购物中心在运输轴线周围密集布局雅鲁藏布江地处青藏高原南部的断裂带上,河床平均海拔接近4000m,河谷宽窄相间。
湖北省鄂东南省级市范高中教育教学改革联盟学校2022届高三五月联鄂东南省级示范高中教育教学改革联盟学校2022年五月联考高三理科综合试卷可能用到的相对原子质量:H1He4C12O16P31S32Cl35.5K39Ca40第I卷(选择题共126分)一、选择题(本题共13小题,每小题6分,共78分。
在每小题给出的四个选项中,只有一项符合题目要求)1.下列有关生物学事实正确的是A.种子萌发初期增加的主要元素为C元素B.鉴定高温是否使蛋白质变性可以用双缩脲试剂C.跳水运动员在很短的时间内作出复杂的动作,只是通过神经调节来完成的D.酵母菌计数时可以采用抽样检测的方法2.呼吸熵指植物组织在单位时间内,放出二氧化碳与吸入的氧气的摩尔数(或体积)的比率,下图表示玉米种子萌发时呼吸熵的变化,以下说法不正确的是A.第10~20天时呼吸熵逐渐降低,呼吸底物可能还利用了脂眆B.在氧气充足的情况下,用呼吸熵的数值可推断呼吸底物C.第30~40天时呼吸熵最低,此时无氧呼吸最强D.环境中的氧气浓度也会影响呼吸熵的变化3.实验人员用脱落酸(ABA)和脱落酸抑制剂(ABAI)处理某植物,分析其果实成熟过程中果实硬度、乙烯释放量和呼吸速率的变化,得出下图结果。
下列说法正确的是A.由图甲可知ABA处理能够使果实细胞中纤维素酶和果胶酶的活性降低B.由图乙可知短途运输水果可用ABAI处理,长途运输可用ABA处理C.乙烯释放量和细胞呼吸速率呈正相关,ABA可使两者峰值提前出现D.ABA能够促进细胞呼吸,所以将要脱落的器官和组织中含量少4.育种专家通过杂交育种技术和常规育种方法,结合分子标记辅助选择,对耐盐、耐碱、抗病、优质、高产等多种基因进行聚合,选育出新型耐盐碱海水稻,耐盐碱海水稻可以广泛地种植于沿海滩涂、内陆盐碱地和咸水湖周边。
下列有关说法错误的是A.在培育海水稻过程中既有人工选择育种又有杂交育种方法B.海水稻体内耐盐、耐碱、抗病等基因转录时模板链可能不同C.直接对海水稻的花药进行离体培养可以获得可育植株D.海水稻体内的tRNA中含有氢键5.红树林指生长在热带、亚热带低能海岸潮间带上部,受周期性潮水浸淹,以红树植物为主体的常绿灌木或乔木组成的潮滩湿地木本生物群落。
鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第1页鄂东南省级示范高中教育教学改革联盟学校2023年五月模拟考高三数学参考答案选择题题号123456789101112答案CBDCADABADABDABDACD填空题13.1614.15.(0,1)16.1;4小题详解1.C 【解析】2{|230}{|13}A x x x x x =--<=-<< ,{|ln(1)}{|1}B x y x x x ==+=>-,{|1U A x x ∴=- ð或3}x ≥,{|1}U x B x =- ð,U A B ∴Úð,U A B ðÚ,A B U ≠ ,()U A B U = ð,故选C .2.B 【解析】已知2i(i -是虚数单位)是关于x 的方程20(,)x bx c b c ++=∈R 的一个根,则2(2i)(2i)0b c -+-+=,即44i 12i +0b b c --+-=,即32040b c b ++=⎧⎨--=⎩,解得45b c =-⎧⎨=⎩,故1b c +=,故选B .3.D 【解析】 ||2a =,||1b = ,且|2|a b - 222|2|4410a b a a b b ∴-=-+=,即44410a b -+= ,12a b =- ,∴b 在a方向上的投影向量为21||cos ,||8||||||||||a a b a a b b a b b a a a a b a a <>=⋅==-,故选D .4.C 【解析】函数()sin(2)f x x ϕ=+的图象向左平移3π个单位,得2()sin(2)3g x x πϕ=++的图象,又函数()g x 是偶函数,232k ππϕπ∴+=+,(k ∈Z ),6k πϕπ∴=-,k ∈Z;3tan t 6an()3k πϕπ∴=-=-,故选C .5.A 【解析】在AMB △中,由勾股定理可得:1000AB ===米,连接PO ,鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第2页则在APO △中,sin 42670PO AP =⋅︒≈米,连接OB ,OC ,OM ,则在OBM △中,60060sin 67067BM BOM BO =∠==,故 1.1BOM ∠≈, 2.2BOC ∠≈,则彩虹( BPC )的长度约为(2 2.2)67013401474ππ-⨯=-,故选A .6.D 【解析】法一:设“两名女生都到岗”为事件A ,“两名女生不在同一岗位”为事件B ,则2423122254512265424562()6563C C C C C P A C C C C ⨯⨯===⨯⨯,2312211254223512265424()815424()656C C C C C C C P AB C C C C ⨯==⨯⨯-=,∴()84(|)=()15532P AB P B A P A =⨯=,故选D .法二:3122122254235423312212225412211142225442()5()()(|)=()24430()C C C C C C C C P AB n AB P B A P A C C C C C C C C n C C A C C --=====.7.A 【解析】由题意可得2()260g x x ax a =-++=有解,所以28(6)0a a ∆=-+ ,解得4a - 或12a ,当12a ≥时,必有14(1)260a g a a ⎧>⎪⎨⎪=-++⎩ ,解得12a ≥;当4a -≤时,必有14(1)280ag a ⎧<-⎪⎨⎪-=+⎩ ,不等式组无解,综上所述,12a ≥,a ∴的取值范围为[)12+∞,,故选A .8.B 【解析】设此正三棱锥框架为P ABC -,球1O 的半径为R ,球2O 的半径为r ,底面ABC 外接圆的圆心为O ,连接PO ,AO ,延长AO 交BC 于点N . 圆气球2O 在此框架内且与正三棱锥所有的棱都相切,设球2O 与棱PA 和BC 相切于点M ,N ,则323AO =⨯,3212ON =⨯=,PO ⊥ 底面ABC ,PO AO ∴⊥,又PA =2PO ∴==,在直角三角形2OO N中,2OO =,1r <<,在直角三角形2PMO 中,2PM MO r ==,2PO =,由22PO PO OO =+,可得2=+r =,则球2O的表面积为2244(44r πππ=⨯=-,又2OA OB OC OP ====,则O 与1O 重合,球1O 的半径2R =,球1O的表面积为鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第3页2244216R πππ=⨯=,综上可得:两球表面积之和为(4416(60πππ-+=-,故选B .9.AD 【解析】对于A 选项,平面EFG 截正方体1111ABCD A B C D -的截面图形为正六边形EFGHIJ ,其中,,H I J 分别为11C D ,11A D ,1AA 的中点,11AC //HI ,HI ⊂平面EFGHIJ ,11AC ⊄平面EFGHIJ ,∴11A C //平面EFGHIJ ,故A 正确;对于B 选项,过P 作PM AD ⊥交AD 于点M ,则直线CP 和平面ABCD 所成的角为PCM ∠,tan PMPCM CM ∠=,设PM x =,正方体的棱长为1,则tan PMPCM CM∠===,(01x ≤≤),∴2tan 2PCM ⎡∠∈⎢⎣⎦,∴直线CP 和平面ABCD 所成的角不为定值,故B 错误;对于C 选项, 1BC ⊥平面11A B CD ,1BC //FG ,∴FG ⊥平面11A B CD ,又CP ⊂平面11A B CD ,CP FG ∴⊥,故C 错误;对于D 选项,设IJ 1A D M =,FG 1B C N =,则平面11A B CD 平面EFGHIJ =MN , //CP 平面EFG ,CP ⊂平面11A B CD ,∴//CP MN ,又在平面11A B CD 内,易知1114A M A D =,114CN CB =,∴点P 为线段1A D 的中点,故D 正确,故选AD .10.ABD 【解析】对于A 选项,由题意知,,a b 是函数1()111x h x x x ==+--分别与函数()2x f x =,2()log g x x =图象交点的横坐标, ()f x ,()g x 两个函数的图象关于直线y x =对称,()h x 的图象也关于y x =对称,故两交点(,2)a a ,2(,log )b b 关于直线y x =对称,所以2log a b =,2a b =,故A 正确;对于B 选项,由21a a b a ==-可得ab a b =+即111a b+=,故B 正确;对于D 选项, 11()()24b aa b a b a b a b+=++=++>,故D 正确;对于C 选项,2log (24)a b b b b -=-<<,令鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第4页2()log b b b ϕ=-,则1()10ln 2b b ϕ'=-<,∴2()log b b b ϕ=-在(2,4)上单调递减,则2()log 442b ϕ>-=-,故C 错误,故选ABD .11.ABD 【解析】对于A 选项,由已知可得1,2a b ==,∴C 的渐近线方程为2y x =±,故A 正确;对于B 选项,由题意得,AM 的直线方程为:0014y yx x -=,AM ∴为双曲线的切线,由双曲线的光学性质可知,AM 平分12F AF ∠,故B 正确;对于C 选项,延长1F H ,与2AF 的延长线交于点E ,则AH 垂直平分,即点H 为的中点.又O 是的中点,12.ACD 【解析】对于A 选项, 2222()sin ()cos ()cos sin ()222n n n n n n f x x x x x f x πππ-=-+-=+=,故A 正确;对于B 选项,当1n =时,1()1f x =.当1n >时,设2sin x t =,则2cos 1x t =-,令[]()(1),0,1n n h t t t t =+-∈,1111()(1)(1)n n n n h t nt n t n t t ----'⎡⎤=--=--⎣⎦,102t <<时,011t t <<-<,∴11(1)n nt t --<-,∴()0h t '<,112t <<时,()0h t '>,∴min111()()22n h t h -==,即112n n a -=,∴1231171244a a a ++=++=,故B 错误;对于C 选项,由ln(1)x x +≤得ln(1)i i a a +<,∴1111112ln(1)221212nnn i i n i i a a -==-+<==-<-∑∑,故C 正确;对于D 选项,=,∴>+,1121222n n --∴>,∴12112222n n n ---<-,又12nn b -=,∴11211212242222n S ---=+++<-++鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第5页214422n n b ++=-=-,即有*24()n n S b n +<-∈N ,故D 正确,故选ACD .13.16【解析】 2~(,)N ξμσ,(14)(180.10.91P P ξξ+<=+=) ,∴(14)1(18(18)P P P ξξξ=-<=)≥ ,14+18=162μ∴=.14.77±【解析】根据题意,圆22:430C x y x +-+=即22(2)1x y -+=,若ABC ∆为直角三角形,则有=,解得:77k =±.15.(0,1)【解析】记()ln (01)g x x x =-<<,()ln (1)h x x x =≥,由函数()f x 图象可知,不妨设1l 与()g x 相切于点11(,ln )A x x -,2 l 与()ln h x x =相切于点22(,ln )B x x ,则1201,1x x <<>. 1()g x x '=-,1()h x x'=,∴111l k x =-,221l k x =,12l l ⊥,∴12111x x -⋅=-,即121=x x , 1 l 的方程为:1111ln ()y x x x x +=--,2 l 的方程为:2221ln ()y x x x x -=-,联立方程组可求得点Q 的横坐标122Q x x x =+,121=x x ,∴122x x +>=,∴01Q x <<,即Q 点横坐标的取值范围是(0,1).16.1;4【解析】设(,)N x y ,1(A x ,1)y ,2(B x ,2)y ,14OA OB k k ⋅=- ,121214y y x x ∴⋅=-,121240x x y y ∴+=,ON OA OB λμ=+ ,1122(,)(,)(,)x y x y x y λμ∴=+,∴1212x x x y y y λμλμ=+⎧⎨=+⎩,(,)N x y 在椭圆上,221212()4()4x x y y λμλμ∴+++=.即22222211221212(4)(4)2(4)4x y x y x x y y λμλμ+++++=.①又221144x y +=,222244x y +=,代入①得221λμ+=.=3ON OA OB OM OB λλμμ=++ ,由,,M N B 三点共线,得+=13λμ,34==55λμ∴,1455ON OB ∴=+ ,14=55MN NB ∴ ,||=4||MN BN ∴.鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第6页解答题17.(10分)【答案】(1;(2【解析】(1)在ABC ∆中,由余弦定理得2222cos AC AB BC AB BC ABC =+-⨯⨯⨯∠,271BC BC ∴=++,解得2BC =,11sin 1222ABC S AB BC ABC ∆∴=⨯⨯⨯∠=⨯⨯⨯.·················5分(2)设CAD θ∠=,在ACD ∆中,由正弦定理得sin sin AC CDADC CAD =∠∠,∴sin sin 3AC =πθ①,·················6分在ABC ∆中,2BAC πθ∠=-,6BCA ∠=-πθ,则sin sin AC ABABC BCA =∠∠,即12sin sin(6)3AC =-ππθ②,················8分由①②得:sin ,6-=πθθ31cos )sin 22∴-=θθθ,整理得2sin =θθ,3tan 2CAD ∴∠=.·················10分18.(12分)【答案】(1)n a n =;(2)证明见解析【解析】(1)222n n n a a n S +-= ,当2n 时,21112(1)2n n n a a n S ---+--=,两式相减得:22112212n n n n n a a a a a --+---=,整理得221(1)n n a a -=+,················4分0n a > ,11n n a a -∴=+(2n ),当1n =时,2111212a a a +-=,11a ∴=-(舍)或11a =,················5分∴{}n a 是以1为首项,1为公差的等差数列,则n a n =;·················6分(2)由(1)知,31nn b =-,113111((31)(31)23131n n n n n n c ++==--⋅---················8分∴12212311111111()2313131313131n n n c c c +=-+-++-----++-+- 1111111(223142(31)n n ++=-=---,鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第7页1102(31)n +>-,111142(31)4n +∴-<-,即1214nc c c +++< .·················12分19.(12分)【答案】(1)证明见解析;(2)23417【解析】(1)证明:1AC ⊥ 平面11BB C C ,11B C ⊂平面11BB C C ,111AC B C ∴⊥;又2ABC π∠=,1112A B C π∴∠=,即1111B C B A ⊥,··················2分111AC B C ⊥ ,1111B C B A ⊥,1111AC B A A = ,111,AC B A ⊂平面11A B C ,11B C ∴⊥平面11A B C ,··················4分又11B C ⊂平面111A B C ,∴平面11A B C ⊥平面111A B C ;··················5分(2)1AC ⊥ 平面11BB C C ,1B C ⊂平面11BB C C ,11AC B C ∴⊥;又11B C ⊥平面11A B C ,11B C //BC ,∴BC ⊥平面11A B C , 1B C ⊂平面11A B C ,1BC B C ∴⊥,11AC B C ⊥,1BC B C ⊥,1AC BC C = ,1,AC BC ⊂平面1A BC ,∴1B C ⊥平面1A BC ,··················6分法一:(坐标法)分别以CB 为x 轴,1CB 为y 轴,1CA为z 轴建立如图所示平面直角坐标系,则1(0,0,2)A,(B ,(0,0,0)C ,1(0,2,0)B,1(2)A B =-,1(2,0)B B =-,···················7分设平面1AA B 的法向量1(,,)n x y z =, 1B B ⊂平面1AA B ,则111100n A B n B B ⎧⋅=⎪⎨⋅=⎪⎩,即0220z y ⎧=⎪⎨=⎪-⎩-,取1n = ,···················9分取平面1CA B 的一个法向量2(0,1,0)n =, (10)分则12cos,3417n n<>===,故平面1AA B与平面1CA B···················12分法二:(几何法)在平面1A BC内,过点C作CH⊥1A B交1A B于点H,连接1B H,则1A B⊥平面1B CH,1CB H∠为二面角11B A CB--的平面角,即为平面1AA B与平面1CA B的夹角.·················8分 11=AC B C,1111=A B CB=,=AB BC=,∴11=2AC B C=,又在直角三角形1A BC中,16A B==,∴112424263BA C BCCHA⋅⋅===,则在直角三角形1B CH中,114t32an CBHBHCC==∠=,故17c2341os HCB=∠=,∴平面1AA B与平面1CA B.····················12分20.(12分)【答案】(1)925;(2)36k=【解析】(1)设事件A:“顾客甲第一次抽中”,事件B:“顾客甲第二次抽中”,A与B是相互独立事件,所以A与B相互独立,由于19992010099!20119!80!()()100!100520!80!CP A P BC=====,故14()()155P A P B==-=,∴甲被抽中的概率251(5492P=-=;···················4分(2)“由系统独立、随机地从这100名顾客中抽取20名顾客,抽取两次”所包含的基本事件总数鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第8页鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第9页为220100()C ,当X k =时,两次都中奖的人数为40k -,只在第一次中奖的顾客人数为20k -,只在第二次中奖的顾客人数也为20k -,由乘法原理知:事件{}X k =所包含的基本事件数为02020204020201002081002080k k k k C C C C C C ----=,2040201002080208020201000202012()()k k k k C C C C C P X k C C ----===,2040k ,···················6分由()(1)()(1)P X k P X k P X k P X k ==+⎧⎨==-⎩ 可得:22019208020802021202201908008021k k k k k k k k C C C C C C C C --------⎧⎪⎨⎪⎩ ,····················8分整理得:20!80!20!80!(20)!(40)!(20)!(100)!(19)!(39)!(19)!(99)!20!80!20!80!(20)!(40)!(20)!(100)!(21)!(41)!(21)!(101)!k k k k k k k k k k k k k k k k ⎧⋅⋅⎪--------⎪⎪⎨⎪⎪⋅⋅--------⎪⎩ ,化简得:21(40)(100)(19)(19)(0)(20)(41)(101)111k k k k k k k k ⎧⎪----⎪⎪⎨⎪⎪----⎪⎩,则有(19)(19)(40)(100)(41)(101)(20)(20)k k k k k k k k ----⎧⎪⎨⎪----⎩ ,整理得10236391023741k k ⎧⎪⎨⎪⎩ ,解得121334341247k,即233536343423k ,···················11分 k 为整数,∴36k =,()P X k ∴=取到最大值时,36k =.··················12分21.(12分)【答案】(1)24x y =;(2)(i )证明见解析;(ii )1【解析】(1)设圆心(,)D x y 1y =+,化简整理得:24x y =,∴曲线C 的方程为:24x y =. (4)分∴直线PA 的方程为:()111=2y x x y -+,即21111=24y x x x -,鄂东南教改联盟学校2023年五月模拟考高三数学参考答案(共12页)第10页同理可得直线PB 的方程为:22211=24y x x x -,1212,0,0,1222x x x x M N P +⎛⎫⎛⎫⎛⎫∴- ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭,,,··················6分又(0,1)F ,1212,1,1,2222x x x x FM FN FP +⎛⎫⎛⎫⎛⎫∴+=-+-=-= ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭,∴11||||sin 2S MA MF AMF =∠ ,21||||sin 2S PM PN MPN =∠,31||||sin 2S NB NF BNF =∠,22213(||||)|||||||||||||1.|||S PM PN PM PN S S MA MF NB NF MA NB ∴=⋅⋅=⋅⋅=⋅⋅··················12分22.(12分)【答案】(1)0e a < ;(2)0e a < 时,关于x 的方程(())(())h f x h g x =在(0,)+∞上有唯一解.【解析】(1)由题意,211e 122x x x ax +-+- ,即211e 22x x x a x-+-,令211e 22()x x x x x ϕ-+-=,211(1)(e )22()x x x x xϕ---'=,··················2分由e 1x x + 知11e 022x x -->,故当01x <<时,()0x ϕ'<,()x ϕ单调递减,1x >时,()0x ϕ'>,()x ϕ单调递增,所以()(1)e x ϕϕ= ,所以0e a < .···················4分(2)ln ()xh x x=,易求得()h x 在(0,e)上单调递增,在(e,)+∞上单调递减;①当e a =时,211()e 22g x x x =+-,且由(1)知()()f x g x ,()e 0g x x '=+>,()e 10x f x '=+>,即()f x ,()g x 均单调递增;此时(1)(1)e f g ==,有((1))((1))h f h g =.1︒当(0,1)x ∈时,()()(1)e g x f x f <<=,()h x 在(0,e)上单调递增,所以(())(())h f x h g x >;。
2024届湖北省鄂东南省级示范联盟学校高三5月第一次联考(一模)英语试题一、阅读理解Genes aren’t the only things we inherit. Readers share the rules and traditions that made them the parents they are today.Like a ChampI grew up a very athletic tomboy. My mother occasionally told me to let the boys win, because they wouldn’t like me if I always beat them, so I did. My daughter is also quite athletic and has never heard anything even slightly resembling those words. I tell her she’s as good as those boys and to do her best and win. And she has. She has grown up very confident and is even more broadly admired for her determination. What a difference a generation makes.—Klari Frederick Linden, Michigan Buckle Up!When I was growing up, my brother and I were told to buckle up on every drive — no exceptions to Dad’s rule.Now that I have kids of my own, they also have to wear their seat belts on every trip. During my daughter’s driver’s education lesson, she hopped into the back seat and put her seat belt on when it was another student’s turn to drive. An oncoming vehicle hit them head-on. A paramedic said the seat belt had broken my daughter’s sternum — but that if it hadn’t been there, she’d have gone through the windshield. My dad’s rule saved my daughter’s life.—Penny Males Lucas, Texas Snow Time like the PresentMy mom always prioritized exposing me to new experiences. We visited Canada when I was 11. My heart was brimming with excitement when I saw my first snow. My grandmother suggested that it was too late and that I could play tomorrow. But my mom said, “No, I think I’ll let him play a little now.” It’s a philosophy I’ve implemented in my own parenting. Just one exception for my dear daughter: No skydiving, please!—Jonathan Gewirtz Monsey, New York1.What can we learn about the passage?A.Klari’s daughter doesn’t like sports.B.Klari follows the exact rule that made her the parent today.C.Jonathan wants to expose her daughter to every new experience.D.If Penny’s daughter hadn’t buckled up, she would have been seriously injured.2.What docs the passage want to tell us?A.We should not expect our children to follow our path.B.Parents’ love for their children is significant in a family.C.Whatever happens, we should do our best to be good parents.D.Our growing experience has a influence on our parenting skills.3.What is this text?A.A research paper.B.A survey result.C.A magazine article.D.A book review.Tom is an expert from a robotics company who can communicate smoothly with people through computers, phones, and other means. However, when facing the crowd on site, he will feel uneasy. His boss arranged for Tom to showcase to the audience the innovative work their company is doing. In response to the boss’ trust in him, Tom bravely began preparing for this matter.One day, while watching TV, he happened to see a program where the ventriloquist (腹语术者) Arthur interacted with the audience through a dummy (假人) to convey information. This gave him inspiration. The next day, he discussed his idea with his colleagues in the company and everyone supported his plan. On the day of the exhibition, they arrived at the scene early and prepared everything, although Tom was still a bit nervous.The much-anticipated presentation started. The presenter began with a light-hearted joke and then proceeded to share some interesting facts about Reality Robotics Company before revealing the innovative work the company was undertaking. Throughout the presentation, there were no pauses or instances of Tom’s dreaded phrase: “but what I really meant to say was.” The audience was impressed by the innovative product the presenter described and hoped for a demonstration to see how effective the new invention was. As the presentation drew to a close, the presenter said calmly and confidently, “And now I would like to share this stage with the man who invented me.”Tom walked onto the stage, looking exactly like the presenter. The “identical twins” tookthe audience by surprise. Tom then spoke slowly, “What you have just witnessed is a demonstration of the latest invention from the company — a presentation robot.” Suddenly it all clicked and the audience erupted in cheers. Tom then explained how the company created such a robot and programmed it to speak. “As you could see and hear, it had the confidence I could never exhibit in such a presentation. We can model it into an exact copy of you.” The audience got excited at the prospect. The boss smiled approvingly. Maybe Tom deserved a promotion, he thought.4.What’s Tom’s problem?A.He tended to get nervous easily.B.He failed to win his boss’ recognition.C.Ho was not confident to speak in front of the public.D.He can’t communicate with people in his daily life.5.What do we know about the presenter?A.He was quite serious.B.He didn’t live up to Tom’s expectations.C.He was inspired by the dummy that Arthur worked with.D.Though confident, he was a bit nervous giving the presentation.6.What does Tom’s company do?A.It creates innovative robots.B.It helps present new ideas.C.It advertises new products.D.It produces ventriloquist’s dummies. 7.What mainly contributes to the presentation’s success?A.Luck and humor.B.Teamwork and creativity.C.Caution and responsibility.D.Courage and friendliness.Alan Jamieson remembers seeing it for the first time: a small, black fiber floating in liquid. It resembled a hair, but when Jamieson examined it under a microscope, he realized that the fiber was clearly synthetic (人工合成) — a piece of plastic. And worryingly, his student Lauren Brooks had pulled it from the gut of a small amphipod (片脚类动物) living in one of the deepest parts of the ocean.For the past decade, Jamieson, a marine biologist at Newcastle University, has been sendingvehicles to the bottom of marine trenches (海沟), which can be as deep as the Himalayas are tall. These landers have collected amphipods — scavenger relatives of crabs and shrimp that thrive in the depths. Jamieson originally wanted to know how these animals differ from one distant trench to another. But a few years ago, he decided to analyze their body for toxic, human-made pollutants, which have been banned for decades but which persist in nature for much longer.“It’s not a good result,” Jamieson said. “I don’t like doing this type of work.” When he submitted his findings to a scientific journal, the researchers who reviewed the paper reasonably asked how he could tell that the fibers were actually plastic. To satisfy the critics, his team chemically analyzed a subset of the fibers and found that all of it was synthetic.Food is scarce in the deep, so amphipods eat pretty much anything, which makes them particularly vulnerable to plastics. And since they sit at the bottom of the ocean food webs, their appetite can upset entire ecosystems, “They’re like bags of peanuts,” Jamieson says, “Everything else eats amphipods — shrimp, fish — and they’ll end up consuming plastics, too. And when the fish die, they get consumed by amphipods, and it goes round and round in circles.”“So what can we do? The International Union for the Conservation of Nature recommends we protect 30 percent of every marine habitat to address human impacts, but that will only help if we’re also sustainably managing the remaining 70 percent, reducing carbon emissions, and limiting the pollution being dumped in the ocean in the first place.”8.Which conclusion can NOT be drawn about the fiber?A.It has been proved to be generated by human.B.It won’t appear again through human’s efforts.C.It was found in the body of a small amphipod.D.It indicates plastic pollution in the deep ocean.9.What docs Jamieson’s research focus on?A.The food of amphipods.B.The habitat of amphipods.C.The difference between amphipods in different trenches.D.The existence of human-made pollutants in amphipods.10.What’s the scientific journal’s initial attitude towards Jamieson’s findings?A.Negative.B.Doubtful.C.Supportive.D.Disapproving.11.By saying “their appetite can upset entire ecosystems”, the author means ________.A.amphipods have occupied a lot of ocean space because of their appetiteB.amphipods’ habitat should be protected so as to address human impactsC.amphipods can produce chain effects since they are food resources of othersD.amphipods consuming too much marine resources affect the balance of natureTo say that the child learns by imitation and that the way to teach is to set a good example oversimplifies. No child imitates every action he sees. Sometimes the example the parent wants him to follow is ignored while he takes over contrary patterns. Therefore we must turn to a more subtle theory than “Monkey see, monkey do”.Look at it from the child’s point of view. Here he is in a new situation, lacking a ready response. He is seeking a response which will gain certain ends. If he lacks a ready response for the situation, and cannot reason out what to do, he observes a model who seems able to get the right result. In other words, the child looks for an authority or expert who can show what to do.There is a second clement at work in this situation. The child may attain his immediate goal only to find that his method brings criticism from people around. When shouting across the house achieves his immediate end of delivering a message, he is told that such an action is unpleasant, and that he should walk into the next room to say his say quietly. Thus, the desire to solve a problem is overlaid by the desire to solve it properly. One early thing the child learns is that he gets more affection and approval when his parents like his response. If one is to maintain others’ support and his own self-respect, he must adopt responses his social groups approves.In finding trial responses, the child does not choose models at random. He imitates the person who seems a good person to be liked, rather than a person whose social status he wishes to avoid. If the pupil wants to be a good violinist, he will observe and try to copy the techniques of capable players, rather than those who may most influence his approach to books.Admiring one quality often leads us to admire a person as a whole, and he becomes an identifying figure. We use some people as models over a wide range of situations, imitating much that they do. We know they are dependable and rewarding models because imitating them leads to success.12.What does the author mean to do with the last sentence of the first paragraph?A.To compare children’s behaviors to monkeys’.B.To tell us that children do not learn by imitation.C.To warm that children should not learn by imitating their parents.D.To show it is partial to regard imitation as “Monkey see, monkey do”.13.According to the passage, what’s the first element at work when a child learns by imitation?A.The desire to please others.B.The need to avoid criticism.C.The need to ensure a safe result.D.The desire to fit into a new culture. 14.What are the last two paragraphs mainly about?A.How children choose models.B.How children learn by imitation.C.The motives of children’s imitation.D.The influence of children’s imitation. 15.Which of the following serves as the best title of the passage?A.Admiration for Children’s Imitation.B.Misunderstanding of Children’s Imitation.C.Children’s Imitation: Not a Simple TrickD.Children’s Imitation: Not Unique to HumansNo woman can be too rich or too thin. This saying from the late Dutchess (公爵夫人) of Windsor reflects much of the odd spirit of our times. Being thin is recognized as such a virtue. The problem with this view is that some people actually attempt to live by it. 16 Consequently, I have been on a diet for the better-or-worse-part of my life.17 And when did eating butter become a sin (原罪)? All religions l have certain days when people contain their desire from eating and excessive eating is one of Christianity’s seven deadly sins. However, until quite recently, most people had a problem getting enough to eat. In some social groups, wealth was a blessing and a symbol of high morals, and fatness a sign of wealth and well-being.18 We have shifted to thinness us our new mark of virtue. The result is that being fat, or somewhat overweight, is bad because it implies a lack of moral strength. 19 It is true that we have more overweight people than before, and that being overweight correlates with an increased risk of heart and blood diseases. These diseases, however, may have as much to do with our way of life and our high-fat diets as with extra weight. And the risk of cancer in thedigestive system may be more of a dietary problem—too much fat und a lack of fibre—than a weight problem.The real concern, then, is not that we weigh mo much, but that we neither exercise enough nor eat well. Exercise is necessary for strong bones and overall health. A balanced diet can also help the body avoid diseases. Simply being thin is not enough. It is actually dangerous if those thin people think they are automatically healthy and thus free from caring about their lifestyle.20A.Today the opposite is true.B.Thinness makes a big difference.C.Then where did we go off the track?D.It is time to change their (and our) concept of thinness.E.There is much to do when we realize we’ve gone too far.F.Our addiction to thinness is also fueled by health concerns.G.I myself have fantasies of slipping into narrow designer cloches.二、完形填空Several years ago I was teaching in Melbourne, Australia. Like most Brits down under, I wanted to 21 my time in this country, so I would take every chance to travel around the far 22 of Australia.On one trip, I and three friends went as far into the Outback (内陆地区) as it was possible to go, camping and 23 Arnhem Land in the Northern Territory. In these riverine areas, there were plenty of crocodiles and smaller, deadly 24 to make us nervous.After picking up some 25 from an isolated shop near an even more isolated settlement, we reached a 26 which had to be forded (涉过). It was a likely 27 for dangerous salt water crocodiles to be loitering (游荡), so all of us were warned to 28 any “salties” as our vehicle entered the water.At first the water only reached the top of the 29 , but within seconds it was lapping at the windows. My heart was beating fast as I peered out, searching for any 30 logs floating towards us.31 there was a scream from the back seat. “Ah! Get it off, it hurts!” I turned round, feeling quite 32 that I was about to see a horrifyingly grizzly animal. As it 33 , one of my friends had bought a hot pie in the isolated little store. The contents, hotter than the Arnhem Land sunshine, had 34 onto his bare legs as we bumped through the stream.We made it to the other side with no “salties” 35 . Just one passenger with a very sore leg.21.A.run out of B.take hold of C.make the most of D.catch sight of 22.A.fields B.corners C.villages D.surroundings 23.A.exploring B.searching C.swimming D.climbing 24.A.mammals B.humans C.plants D.creatures 25.A.water B.supplies C.clothes D.friends 26.A.stream B.lake C.valley D.cliff 27.A.station B.channel C.spot D.yard 28.A.reach out for B.wait up for C.turn a deaf ear to D.keep an eye out for 29.A.wheels B.walls C.seats D.legs 30.A.easy-going B.fun-loving C.suspicious-looking D.fast-flowing 31.A.Interestingly B.Unbelievably C.Occasionally D.Suddenly 32.A.curious B.certain C.amazed D.bored 33.A.turned out B.stood out C.made out D.found out 34.A.cracked B.extended C.spilled D.crashed 35.A.lost B.caught C.missed D.sighted三、语法填空阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
鄂东南省级示范高中教育教学改革联盟学校五月联考高三理科综合试卷(物理)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。
)1. 关于原子结构与原子核的知识,下列说法正确的是A. I→Xe+e属于重核裂变反应,反应过程有质量亏损B. Th(钍核)的半衰期是24天,对它施加压力后,半衰期可能变短C. α、β、γ三种射线中,α射线的穿透能力最强D. 卢瑟福根据α粒子散射实验,提出了原子的核式结构模型【答案】D【解析】A、I→Xe+e属于裂变反应,反应过程有质量亏损,故A错误;B、半衰期是由原子核内部自身决定的,与地球环境不同,所以半衰期不变,故B错误;C、α、β、γ三种射线中,γ射线的穿透能力最强,α射线的穿透能力最弱,电离能力最强,故C错误;D、卢瑟福根据α粒子散射实验,提出了原子的核式结构模型,故D正确;故选D。
2. 两个质点A、B放在同一水平面上,从同一位置沿相同方向做直线运动,其运动的v-t图象如图所示.对A、B运动情况的分析,下列结论正确的是A. 在6s末,质点A的加速度大于质点B的加速度B. 在0-12s时间内,质点A的平均速度为msC. 质点A在0-9s时间内的位移大小等于质点B在0-3s时间内的位移大小D. 在12s末,A、B两质点相遇【答案】A学_科_网...学_科_网...学_科_网...学_科_网...B、在0~12s时间内,质点A的位移为,平均速度为,故B错误;C、质点A在0-9s时间内的位移大小,质点B在0-3s时间内的位移大小,故C错误;D、在12s末,A、B两质点相距的距离等于它们的位移之差,为,故D错误;故A正确;【点睛】在速度-时间图象中,图线的斜率表示加速度,图象与时间轴围成的面积表示物体通过的位移;根据几何关系求出质点A、B在0~12s内的位移,再由位移与时间之比求其平均速度,根据位移关系分析何时两质点相遇。
绝密★启用前考试时间:2022年5月11日上午10:30-11:45湖北省鄂东南省级示范高中教育教学改革联盟学校2019级2022届高三毕业班下学期高考模拟联合考试物理试题试卷满分:100分一、选择题:本题共11小题,每小题4分,共44分。
在每小题给出的四个选项中,第1-7题只有一项符合题目要求,第8-11题有多项符合题目要求。
全部选对的得4分,选对但不全的得2分,有选错的得0分。
1.如图所示,a、b两束单色光分别沿不同方向射向横截面为半圆形玻璃砖的圆心O,已知a光刚好发生全反射,b光的折射光线(反射光线未画出)刚好与a光的反射光线重叠,且αβ>,则判断()A.若将b光沿a光的光路射向O点,b光也能发生全反射B.用a、b单色光分别检查同一光学平面的平整度时,b光呈现的明暗相间的条纹要宽些C.用a、b单色光分别照射同一光电管的阴极材料时,用a光照射打出的光电子的遏止电压小D.用a、b单色光分别以相同入射角斜射入同一平行玻璃砖,a光发生的侧移小2.“玉兔二号”月球车是采用核能来提供能量的,它的核能电池系统能使钚(23994uP)衰变产生的核能转化为电能,这一系统设计使用寿命为14年。
钚(23994uP)静止时衰变为激发态23592U和α粒子,而激发态铀核23592U立即衰变为稳态铀核23592U,并放出能量为E γ的γ光子。
已知钚23994u P 、稳态轴核23592U 和α粒子的质量分别记为,u P U m m 和m α,衰变放出光子的动量可忽略且该过程释放的核能除去γ光子的能量E γ外全部转化为23592U 和α粒子的动能。
若将衰变产生的23592U 和α粒子(均不计重力)垂直射入同一垂直纸面向里的匀强磁场中,下列说法正确的是( )A .23592U 和α粒子在磁场中匀速圆周运动轨迹为外切圆,且两粒子均做顺时针匀速圆周运动B .23592U 和α粒子在磁场中匀速圆周运动轨迹半径之比为46:1 C .23592U 和α粒子的动能之和为()2u P U m m m c E αγ--- D .α粒子的动能为()2u U P U U m m m m c E m m αγα⎡⎤--+⎣⎦+ 3.第24届冬季奥林匹克运动会于2022年2月4日在中国北京和张家口同时举行,跳台滑雪是冬奥会中最具观赏性的项目之一。
湖北省鄂东南省示范高中改革联盟学校2021届高三化学5月联考试题考试时间:2021年05月11月下午14:30—17:05 试卷满分:100分可能用到的相对原子质量:H1 O16 C12 N14 F19 S32 Cl35.5 P31 Si28 Na23 Fe56 Mg24Cu64一、选择题(本题共15小题,每小题3分,共45分,每小题只有一个选项符合题意。
)1. 2021年饮品行业响应国家“吸管禁塑令”,多地奶茶店、咖啡店换成了纸质或聚乳酸(PLA)吸管,乳酸的结构简式为下列有关聚乳酸(PLA)的说法错误的是( )A.常温下难溶于水B.由乳酸合成聚乳酸(PLA)的反应类型为缩聚反应C.其分子式为(C 3H 6O 3)nD.聚乳酸(PLA)在自然环境中可降解2. 设N A 表示阿伏加德罗常数的值,下列叙述正确的是( )A.1mo 环戊二烯()中含有σ键的数目为5N A ,π键的数目是2N A B.4MnO 4-+5HCHO+12H +=4Mn 2++5CO 2↑+11H 2O,1 mol MnO 4-完全反应转移的电子数为5N AC.235g 核素23592U 发生裂变反应:23592U +10n −−−→裂变9038Sr +13654Xe +1010n ,浄产生的中子(10n )数为10N AD.100g46%的甲酸水溶液中所含的氧原子数目为2N A3. 下列离子方程式书写错误的是( )A.(NH 4)2Fe(SO 4)2溶液与少量Ba(OH)2溶液反应:Fe 2++24SO -+Ba 2++20H -===BaSO 4↓+Fe(OH)2↓ B.乙酰水杨酸与NaOH 溶液共热:C.AgCl 溶于过量浓氨水中:+32322AgCl+2NH H O===Ag NH +Cl [()O ]+2H -⋅D.向碘化亚铁溶液中滴加少量稀硝酸:23+32NO +3Fe +4H ===3Fe +NO +2H O -++↑ 4. 中医经典方剂组合对新冠肺炎病毒治疗具有良好的效果。