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安徽省合肥市2019届高三第一次教学质量检测(物理)

安徽省合肥市2019届高三第一次教学质量检测(物理)

合肥市2019年高三第一次教学质量检测(考试时间:90分钟满分:100分)注意事项:1.选择题用答题卡的考生,答第Ⅰ卷前,务必将自己的姓名、准考证号、试题科目用2B 铅笔涂写在答题卡上。

2.选择题用答题卡的考生,在答第Ⅰ卷时,每小题选出答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其它答案,不能答在试题卷和答题卷的选择题栏中;不用答题卡的考生,在答第Ⅰ卷时,每小题选出答案后,填在答题卷相应的选择题栏上。

3.答第Ⅱ卷时,考生务必将自己的学校、姓名、考点、准考证号填在答题卷相应的位置;答题时,请用0.5毫米的黑色签字笔直接答在答题卷上,不要在试题卷上答题。

4.考试结束,监考人将答题卷和答题卡一并收回,第Ⅰ、Ⅱ卷不收回。

第Ⅰ卷选择题一、选择题(每小题4分,共40分)每小题给出的4个选项中,只有一个选项正确)1.关于电磁场和电磁波,下列说法正确的是A.电磁场是一种物质,它只能在真空中传播B.电磁波在真空中传播时,它的电场强度和磁感应强度方向互相平行C.由于微波衍射现象不明显,所以雷达用它测定物体的位置D.大气对蓝光的吸收较强,所以天空看起来是蓝色的2.如图所示,弹簧振子在振动过程中,振子从a到b历时0.2s,振子经a、b两点时速度相同,若它从b再回到a的最短时间为0.4 s,则该振子的振动频率为A.1HzB.1.25 HzC.2 HzD.2.5 Hz3.如图所示,在粗糙水平地面上放着一个截面为四分之一圆弧的柱状物体A,A的左端紧靠竖直墙,A与竖直墙之间放一光滑圆球B,整个装置处于静止状态,若把A向右移动少许后,它们仍处于静止状态,则A.球B对墙的压力增大B.物体A与球B之间的作用力增大C.地面对物体A的摩擦力减小D.物体A对地面的压力减小4.将物体以一定的初速度竖直上抛,经过时间t0回到抛出点,空气阻力大小恒为重力的13。

物体速度v随时间t变化的图像正确的是5.地球同步卫星轨道半径约为地球半径的6.6倍,设月球密度与地球相同,则绕月球表面附近做圆周运动的探月探测器的运行周期约为A.1hB.1.4hC.6.6hD.24h6.一列沿x辅正向传播的横波在t=0时刻的波形图如图(甲)所示,a、b、c、d为介质中四个质点的平衡位置,则图(乙)是下面哪个质点的振动图象A.平衡位置在a处的质点B.平衡位置在b处的质点C.平衡位置在c处的质点D.平衡位置在d处的质点7.如图所示,电源电动势为E,内电阻为r,平行板电容器两金属板水平放置,开关S是闭合的,两板间一质量为m、电量为q的油滴恰好处于静止状态,G为灵敏电流计。

合肥市2019届高三第一次教学质量检测语文试卷含答案解析

合肥市2019届高三第一次教学质量检测语文试卷含答案解析

合肥市2019届高三第一次教学质量检测语文试题(考试时间:150分钟满分:150分)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。

19世纪以来,人工智能已成为科幻小说、科幻电影最钟爱的主题,以至于它占据了我们关于未来的主要想象空间。

不幸的是,这些作品所描述的人工智能窄化了我们对于未来生命和生活形式的想象,似乎人类未来的主要内容就是与机器人的斗争。

同时,过去一百年充斥在科幻文化中的拟人化手法也把人工智能窄化了。

机器人只是人工智能的一种典型形式和一个发展方向,而人工智能对我们的意义不只是它可以模拟、延伸和拓展人的思维,更重要的是,人工智能技术的发展对我们理解人的语言、思维和智能本身有巨大的推进作用。

科幻文化对人工智能的窄化还在于,好莱坞电影中总是将机器人和人的根本差别归于感情或者说是“爱”,其实人的社会性存在是人工智能尤其是人工生命研究领域最大的难题。

人工智能必须建立一个可预测的世界模型以及反应、修正机制,这都是建立在一个理性个体的假设之上。

问题在于,世界上不止有一个个体,还有无数他者,如何以算法应对无数社会性个体之间复杂的、充满非理性和偶然性的相互作用?这才是目前人工智能技术的难点所在。

心灵没有方程式,社会性的心灵更加无法用算法解决,这或许正是艺术的机会。

然而,人的社会性在今天这个网络社会受到了新的挑战。

近20年来,在日常生活的层面上,技术在明显加速,我们能够感觉到各种技术对生活的“重置”。

技术的发展在引诱着也在强迫着我们跟随,不断跟它一起更新换代——引诱是因为花样翻新、追求时尚,而强迫是因为整个服务系统在更新,我们只能跟着更新,否则等待你的是脱离网络、去社会化。

这种加速度,这种迅即的自动化、现成性,取消了我们自主的学习与生产。

那么,我们是不是还能保持艺术创造的欲望?在大数据、人工智能最切近的应用场景中,淘宝、京东设置了众多的“推荐”和“方便”,这些“方便”不但是引导消费的诱饵,更是对我们自身性的诱导和窄化。

安徽合肥2019年高三第一次教学质量检测

安徽合肥2019年高三第一次教学质量检测

安徽合肥2019年高三第一次教学质量检测数学试题(文〕第一卷(选择题 共50分)【一】选择题〔本大题共10小题,每题5分,共50分,在每题给出的四个选项中,只有一项为哪一项最符合题目要求的〕2.双曲线1234:22=-y x C 的焦距是〔)项中为真命题的是A.p ⌝B.q p ⌝∧ C.p q ⌝∨ D.qA.[3,)+∞B.[,1)[2,)-∞+∞C.[,1)[3,)-∞+∞D.[,0)[2,)-∞+∞5.以n S 表示等差数列{}n a 的前n 项和,假设6572=-+a a a ,那么7S =()A.42B.28C.21D.146.函数)(x f y =是定义在R 上的奇函数,且当0>x 时,32)(1-=-x x f ,那么))1((f f =()A.1B.-1C.2D.-2无穷多个,那么实数k 的值是〔)第II 卷(总分值100分〕【二】填空题〔本大题共5小題,每题5分,共25分.把答案填在答题卡的相应位置〕13.假设正数b a 、满足32=+b a ,且使不等式02m a b +->恒成立,那么实数m 的取值范围是_____.①cos 1cos C B <-;【三】解答题〔本大题共6小题,共75分.解答应写出文字说明、证明过租或演算步碟〕16.(本小題总分值12分〕17.(本小題总分值12分〕某市针对交通拥堵、出行不便的现状,提出优先发展公共交通.为了合理调度,优化配置,现随机调査200位市民,统计他们每天等候公共汽车的平均时间,得下表:(I )完成上述表格;(II)绘制等候时间的频率分布直方图;(III)试估计该市市民每天等候公共汽车时间的平均值.18.(本小題总分值12分〕矩形ABCD 中,12==AD AB ,为CD 的中点,沿AE 将DAE ∆折起到AE D 1∆的位置,使ABCE AE D 平面平面⊥1(I)假设F 为线段A D 1的中点,求证:EF ∥BC D 1平面;(II)求证:A D BE 1⊥19.(本小題总分值13分〕巳知数列{}n a 的前n 项和为n S ,且)(332*N n a S n n ∈=+(I)求数列{}n a 的通项公式;20.(本小題总分值13分〕函数)(ln )(2R a ax x x x f ∈++=(I)假设函数)(x f y =图像在点))1(,1(f P 处的切线与直线012=-+y x 垂直,求实数a 的值〔II)求函数)(x f y =的单调区间.21.(本小題总分值13分〕(I)求椭圆C 的方程;(II)过点(0,3)作直线l ,直线l 与圆C 交于不同的两点A,B,求直线l 倾斜角θ的取值范围;(III )在〔II)的条件下,使得MB MA =成立的直线l 是否存在,假设存在,求直线l 的方程;假设不存在,请说明理由.。

【2019合肥语文一模】安徽省合肥市2019届高三第一次教学质量检测语文试题

【2019合肥语文一模】安徽省合肥市2019届高三第一次教学质量检测语文试题

合肥市2019年高三第一次教学质量检测语文试题(考试时间:150分钟满分:150分)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。

19世纪以来,人工智能已成为科幻小说、科幻电影最钟爱的主题,以至于它占据了我们关于未来的主要想象空间。

不幸的是,这些作品所描述的人工智能窄化了我们对于未来生命和生活形式的想象,似乎人类未来的主要内容就是与机器人的斗争。

同时,过去一百年充斥在科幻文化中的拟人化手法也把人工智能窄化了。

机器人只是人工智能的一种典型形式和一个发展方向,而人工智能对我们的意义不只是它可以模拟、延伸和拓展人的思维,更重要的是,人工智能技术的发展对我们理解人的语言、思维和智能本身有巨大的推进作用。

科幻文化对人工智能的窄化还在于,好莱坞电影中总是将机器人和人的根本差别归于感情或者说是“爱”,其实人的社会性存在是人工智能尤其是人工生命研究领域最大的难题。

人工智能必须建立一个可预测的世界模型以及反应、修正机制,这都是建立在一个理性个体的假设之上。

问题在于,世界上不止有一个个体,还有无数他者,如何以算法应对无数社会性个体之间复杂的、充满非理性和偶然性的相互作用?这才是目前人工智能技术的难点所在。

心灵没有方程式,社会性的心灵更加无法用算法解决,这或许正是艺术的机会。

然而,人的社会性在今天这个网络社会受到了新的挑战。

近20年来,在日常生活的层面上,技术在明显加速,我们能够感觉到各种技术对生活的“重置”。

技术的发展在引诱着也在强迫着我们跟随,不断跟它一起更新换代——引诱是因为花样翻新、追求时尚,而强迫是因为整个服务系统在更新,我们只能跟着更新,否则等待你的是脱离网络、去社会化。

这种加速度,这种迅即的自动化、现成性,取消了我们自主的学习与生产。

那么,我们是不是还能保持艺术创造的欲望?在大数据、人工智能最切近的应用场景中,淘宝、京东设置了众多的“推荐”和“方便”,这些“方便”不但是引导消费的诱饵,更是对我们自身性的诱导和窄化。

2019年合肥一模考试化学答案

2019年合肥一模考试化学答案

高三化学试题答案 第1 页(共2页)合肥市2019年高三第一次教学质量检测化学试题参考答案及评分标准第Ⅰ卷 选择题 (第I 卷包括14小题,每小题3分,共42分。

每小题只有一个选项符合题意) 题号1 2 3 4 5 6 7 答案A C D CB AC 题号8 9 10 11 12 13 14 答案 D D B D D C B第Ⅱ卷 非选择题15.(7分)(1)第二周期、第VIIA 族 (1分)(2) (2分)(3)2Al + 2OH −+ 2H 2O === 2AlO 2− + 3H 2↑ (2分)(4)AlCl 3易水解产生挥发性物质HCl ,加热促进HCl 挥发,促使AlCl 3水解,最终得不到无水AlCl 3 (2分)16.(8分)(1)裂解 (1分) 加成反应 (1分)(2)甲酸甲酯 (1分) CH 2BrCH 2Br (1分)(3) (2分)2CH 3COOH+HOCH 2CH 2OH CH 3COOCH 2CH 2OOCCH 3+ 2H 2O (2分)17.(14分)(1)检查装置的气密性 (1分) 冷凝使NO 2完全液化 (1分)(2)赶走装置中的氧气防止对一氧化氮的检验造成干扰 (2分) 把装置中残留的有毒气体全部赶入E 中被吸收 (2分)高三化学试题答案 第2 页(共2页)289a 213(3)打开K 2,向D 中通氧气后,出现红棕色气体 (2分)2NaNO 2 + H 2SO 4 = Na 2SO 4 + NO ↑ + NO 2↑ + H 2O (2分)(4)4NO 2 + O 2 + 4OH − = 4NO 3− + 2H 2O (2分)水会与NO 2反应生成NO ,影响后面NO 的检验 (2分)18.(14分)(1)2ClO 3− + SO 2 = 2ClO 2 + SO 42− (2分) 稀释二氧化氯,防止爆炸 (2分) (2)2NaOH + 2ClO 2 + H 2O 2 = 2NaClO 2 + O 2 + 2H 2O (2分) A (2分) (3)蒸发浓缩 (1分) 冷却结晶 (1分) 重结晶 (1分)(4) (或1.36a ) (3分) 19.(15分)(1)(a −b )kJ·mol −1 (2分) 764 (2分)(2)2CO 2 + 12e − + 12H + = C 2H 4 + 4H 2O (2分)(3)该反应为放热反应,升高温度,平衡逆向移动,从图中可知在相同投料比时,T 1温度下CO 2转化率大于T 2温度下CO 2转化率,可知T 1<T 2 (2分)K A =K C >K B (2分) (4)1.08mol·L −1·min −1 (2分) (3分,其它合理答案均给分)3260.9 2.71.20.6⨯⨯。

安徽省合肥市2019届高三一模数学(文)试题(附解析)

安徽省合肥市2019届高三一模数学(文)试题(附解析)

合肥市2019年高三第一次教学质量检测数学试题(文科)一、选择题:本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.若集合,,则=( ).A. B. C. D.【答案】C【解析】【分析】直接根据并集的定义求解即可.【详解】因为,,所以,根据并集的定义:是属于或属于的元素所组成的集合,可得,故选C.【点睛】研究集合问题,一定要抓住元素,看元素应满足的属性.研究两集合的关系时,关键是将两集合的关系转化为元素间的关系,本题实质求满足属于集合或属于集合的元素的集合.2.设是虚数单位,复数为纯虚数,则实数为( ).A. -2B. 2C.D.【答案】B【解析】【分析】利用复数代数形式的乘除运算化简复数,再由实部为0且虚部不为0列式求得值.【详解】为纯虚数,,解得,故选B.【点睛】复数是高考中的必考知识,主要考查复数的概念及复数的运算.要注意对实部、虚部的理解,掌握纯虚数、共轭复数、复数的模这些重要概念,复数的运算主要考查除法运算,通过分母实数化转化为复数的乘法,运算时特别要注意多项式相乘后的化简,防止简单问题出错,造成不必要的失分.3.设双曲线()的虚轴长为4,一条渐近线为,则双曲线的方程为( ).A. B.C. D.【答案】A【解析】【分析】由虚轴长求,再由渐近线方程求,从而可得到结果.【详解】因为双曲线()的虚轴长为4,所以,,因为双曲线()的一条渐近线为,所以,双曲线的方程为,故选A.【点睛】本题考査双曲线的方程与简单性质,考査双曲线的渐近线,是基础题. 若双曲线方程为,则渐近线方程为.4.执行如图所示的程序框图,则输出的值为( ).A. 63B. 47C. 23D. 7【答案】C【解析】【分析】本道题不断的代入i,n,直到,退出循环,即可。

【详解】n=15,i=2不满足条件,继续循环,得到n=11,i=3不满足条件 ,继续循环,n=23,i=4,满足条件,退出循环,输出n,即可。

安徽省合肥市2019届高三一模数学(文)试题(附解析)

安徽省合肥市2019届高三一模数学(文)试题(附解析)

合肥市2019年高三第一次教学质量检测数学试题(文科)一、选择题:本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.若集合,,则=( ).A. B. C. D.【答案】C【解析】【分析】直接根据并集的定义求解即可.【详解】因为,,所以,根据并集的定义:是属于或属于的元素所组成的集合,可得,故选C.【点睛】研究集合问题,一定要抓住元素,看元素应满足的属性.研究两集合的关系时,关键是将两集合的关系转化为元素间的关系,本题实质求满足属于集合或属于集合的元素的集合.2.设是虚数单位,复数为纯虚数,则实数为( ).A. -2B. 2C.D.【答案】B【解析】【分析】利用复数代数形式的乘除运算化简复数,再由实部为0且虚部不为0列式求得值.【详解】为纯虚数,,解得,故选B.【点睛】复数是高考中的必考知识,主要考查复数的概念及复数的运算.要注意对实部、虚部的理解,掌握纯虚数、共轭复数、复数的模这些重要概念,复数的运算主要考查除法运算,通过分母实数化转化为复数的乘法,运算时特别要注意多项式相乘后的化简,防止简单问题出错,造成不必要的失分.3.设双曲线()的虚轴长为4,一条渐近线为,则双曲线的方程为( ).A. B.C. D.【答案】A【解析】【分析】由虚轴长求,再由渐近线方程求,从而可得到结果.【详解】因为双曲线()的虚轴长为4,所以,,因为双曲线()的一条渐近线为,所以,双曲线的方程为,故选A.【点睛】本题考査双曲线的方程与简单性质,考査双曲线的渐近线,是基础题. 若双曲线方程为,则渐近线方程为.4.执行如图所示的程序框图,则输出的值为( ).A. 63B. 47C. 23D. 7【答案】C【解析】【分析】本道题不断的代入i,n,直到,退出循环,即可。

【详解】n=15,i=2不满足条件,继续循环,得到n=11,i=3不满足条件 ,继续循环,n=23,i=4,满足条件,退出循环,输出n,即可。

2019合肥一模语文作文范文(通用5篇)

2019合肥一模语文作文范文(通用5篇)

2019合肥一模语文作文范文第1篇我出生在合肥,上幼儿园也在合肥,在我童年的记忆里,合肥的楼房没有这么高,街道没有这么宽,车辆也没有这么多,听爸爸讲那时的合肥市区面积也没有这么大。

看到家乡变化这么大,我就闹着爸爸、妈妈带我到市区玩。

第二天,爸爸开着车,我们穿过市区,再顺着外环高架绕一圈,透过车窗向外看,尽揽家乡的风光。

我一边看着窗外的风景,一边听妈妈给我讲合肥的历史和变化。

合肥是一座科教之城,素以“三国故地、包拯家乡、淮军摇篮、科教名城”而闻名海内外。

并拥有中国科技大学、合肥工业大学、安徽大学等学府,还有各类科研机构。

合肥是一个生态之城,逍遥津、包河等处公园,更是使合肥呈现“城在园中、园在城中、城园交融、浑然一体”的独特城市园林风貌。

但是在九十年代以前,合肥虽然是安徽省的省会城市,但市区面积比较小,高楼大厦还比较少,城市的街道窄而拥挤,与上海、南京相比也只能算是一座小城市。

自从合肥划入长三角地区后,城市面积在不断扩大,人口在不断增加,经过合肥人的努力奋斗,现在合肥已经发展成为一座不仅具有文化底蕴的古城,更具有现代都市气息的城市,我的家乡变化真大。

2019合肥一模语文作文范文第2篇你好!我是第一次这样称呼自己,说实话我没有想过,会给自己写一封信。

我很惊讶,我不知道一模后的我会是什么样,成绩是好是坏我都不知道,首先我要祝福自己,祝福自己第一次给未来的自己写信,祝福自己第一次在不知道成绩好坏的情况下写这封信。

希望我自己能考好一点,希望我自己能咸鱼翻身,不再是全班倒数几名。

也许,我已经知道了一模的成绩,也许,我已经知道了一模的严重性和重要性。

一模的成绩的好坏关系到了我的毕业和将来的工作。

一模后的自己,如果考试没有考好,那么希望你中考能够考好,也有可能我心太大了,一模决定着我的命运,一定要重视,不过一模后的自己你一定要记住:老师和家长都在看着你,看着你迈过成功的一步,加油!一模后的自己。

我相信未来的我,我相信你一定能行!因为你是我最了解,最熟悉的.一个人。

2019年合肥市第一次教学质量检测(合肥一模)数学试题

2019年合肥市第一次教学质量检测(合肥一模)数学试题


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2019届安徽省合肥市高三一模数学(文)试题(解析版)

2019届安徽省合肥市高三一模数学(文)试题(解析版)

2019届安徽省合肥市高三一模数学(文)试题一、单选题1.若集合,,则=().A.B.C.D.【答案】C【解析】直接根据并集的定义求解即可.【详解】因为,,所以,根据并集的定义:是属于或属于的元素所组成的集合,可得,故选C.【点睛】研究集合问题,一定要抓住元素,看元素应满足的属性.研究两集合的关系时,关键是将两集合的关系转化为元素间的关系,本题实质求满足属于集合或属于集合的元素的集合.2.设是虚数单位,复数为纯虚数,则实数为().A.-2 B.2 C.D.【答案】B【解析】利用复数代数形式的乘除运算化简复数,再由实部为0且虚部不为0列式求得值.【详解】为纯虚数,,解得,故选B.【点睛】复数是高考中的必考知识,主要考查复数的概念及复数的运算.要注意对实部、虚部的理解,掌握纯虚数、共轭复数、复数的模这些重要概念,复数的运算主要考查除法运算,通过分母实数化转化为复数的乘法,运算时特别要注意多项式相乘后的化简,防止简单问题出错,造成不必要的失分.3.设双曲线()的虚轴长为4,一条渐近线为,则双曲线的方程为().A.B.C.D.【答案】A【解析】由虚轴长求,再由渐近线方程求,从而可得到结果.【详解】因为双曲线()的虚轴长为4,所以,,因为双曲线()的一条渐近线为,所以,双曲线的方程为,故选A.【点睛】本题考査双曲线的方程与简单性质,考査双曲线的渐近线,是基础题. 若双曲线方程为,则渐近线方程为.4.执行如图所示的程序框图,则输出的值为( ).A.63 B.47 C.23 D.7【答案】C【解析】本道题不断的代入i,n,直到,退出循环,即可。

【详解】n=15,i=2不满足条件,继续循环,得到n=11,i=3不满足条件,继续循环,n=23,i=4,满足条件,退出循环,输出n,即可。

故选C。

【点睛】本道题考查了程序框图的意义,关键找出当对应的n,输出,即可,难度较容易。

5.设向量,向量与向量方向相反,且,则向量的坐标为().A.B.C.D.【答案】D【解析】设,利用求出,从而可得结果.【详解】因为向量与向量方向相反,所以可设,,,,故选D.【点睛】本题主要考查平面向量的线性运算以及向量模的坐标表示,意在考查对基础知识的掌握与应用,属于中档题.6.设,,,则().A.B.C.D.【答案】D【解析】根据指数函数的单调性以及对数函数的单调性分别判断出的取值范围,从而可得结果.【详解】由指数函数的性质可得,;由对数函数是性质可得,,,所以,故选D.【点睛】本题主要考查对数函数的性质、指数函数的单调性及比较大小问题,属于难题.解答比较大小问题,常见思路有两个:一是判断出各个数值所在区间(本题是看三个区间);二是利用函数的单调性直接解答;数值比较多的比大小问题也可以两种方法综合应用.7.某调查机构对全国互联网行业进行调查统计,得到整个互联网行业从业者年龄分布饼状图、90后从事互联网行业者岗位分布条形图,则下列结论中不一定正确的是( ).注:90后指1990年及以后出生,80后指1980-1989年之间出生,80前指1979年及以前出生.A.互联网行业从业人员中90后占一半以上B.互联网行业中从事技术岗位的人数超过总人数的20%C.互联网行业中从事运营岗位的人数90后比80前多D.互联网行业中从事技术岗位的人数90后比80后多【答案】D【解析】本道题分别将各个群体的比例代入,即可。

安徽省合肥市2019届高三第一次教学质量检测物理试题 含答案

安徽省合肥市2019届高三第一次教学质量检测物理试题 含答案

合肥市2019年高三第一次教学质量检测物理试题(考试时间:90分钟满分:100分)第I卷(满分40分)一、选择题(本题共10小题,每小题4分,共40分0 1-6题在每小题给出的四个选项中,只有一项是正确的,7-10题有多个选项是正确的。

全部选对的得4分,选对但不全的得2分,有错选或不答的得0分。

)1.原子核俘获一个中子,生成一个核并释放一个质子。

由此可知A. A=13 Z=6B.A= 13 Z=7C.A=14 Z=6D.A=14 Z=72.甲、乙两物体由同一点沿同一条直线运动,它们的v-t图像如图所示,则在0~4 s内A.两物体始终同向运动B.2s末两物体相距最远C.两物体平均速度相等D.4s末两物体相遇3. 2019年1月3日10时26分,嫦娥四号探测器成功在月球背面着陆,标志着我国探月航空工程进入了一个新高度,图示是“嫦娥四号”到达月球背面的巡视器。

已知地球和月球的半径之比为4:1,其表面重力加速度之比为6:1。

则地球和月球的密度之比为A. 2:3B. 3:2C. 4:1D. 6:14.如图所示,真空中位于x轴上的两个等量负点电荷,关于坐标原点O对称。

下列关于E随x变化的图像正确的是5.图示为一带电粒子在水平向右的匀强电场中运动的一段轨迹,A、B为轨迹上的两点。

已知该粒子质量为m、电荷量为q,其在A点的速度大小为v o,方向竖直向上,到B点时速度方向与水平方向的夹角为30°,粒子重力不计。

则A、B两点间的电势差为A. B.C. D.6.如图所示,一有界区域磁场的磁感应强度大小为B,方向垂直纸面向里,磁场宽度为L;正方形导线框abcd的边长也为L,当bc边位于磁场左边缘时,线框从静止开始沿x轴正方向匀加速通过磁场区域。

若规定逆时针方向为电流的正方向,则反映线框中感应电流变化规律的图像是7.如图所示,倾斜直杆的左端固定在地面上,与水平面成θ角,杆上穿有质量为m的小球a和轻质环b,两者通过一条细绳跨过定滑轮相连接。

安徽省合肥市2019届高三一模数学(理)试卷(解析版)

安徽省合肥市2019届高三一模数学(理)试卷(解析版)

合肥市2019年高三第一次教学质量检测数学试题(理科)第Ⅰ卷(共60分)一、选择题:本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.已知为虚数单位,,则复数的虚部为( ).A. B. C. 2 D.【答案】D【解析】【分析】本道题结合复数的运算,化简z,计算虚部,即可。

【详解】,故虚部即为i的系数,为-2,故选D。

【点睛】本道题看考查了复数的化简,考查了复数的意义,关键在于化简z,属于较容易的题。

2.集合,,则= ( ).A. B.C. D.【答案】C【解析】【分析】先化简集合A,B,结合并集计算方法,求解,即可。

【详解】解得集合,所以,故选C。

【点睛】本道题考查了集合的运算,考查了一元二次不等式解法,关键化简集合A,B,难度较小。

3.执行如图所示的程序框图,则输出的值为( ).A. 63B. 47C. 23D. 7【答案】C【解析】【分析】本道题不断的代入i,n,直到,退出循环,即可。

【详解】n=15,i=2不满足条件,继续循环,得到n=11,i=3不满足条件,继续循环,n=23,i=4,满足条件,退出循环,输出n,即可。

故选C。

【点睛】本道题考查了程序框图的意义,关键找出当对应的n,输出,即可,难度较容易。

4.已知正项等差数列的前项和为(),,则的值为( ).A. 11B. 12C. 20D. 22【答案】D【解析】【分析】本道题结合等差数列性质,结合,代入,即可。

【详解】结合等差数列的性质,可得,而因为该数列为正项数列,可得,所以结合,可得,故选D。

【点睛】本道题考查了等差数列的性质,关键抓住,即可,难度中等。

5.已知偶函数在单调递增,则对实数是的()A. 充分不必要条件B. 必要不充分条件C. 充要条件D. 既不充分也不必要条件【答案】D【解析】【分析】由函数的单调性以及充分条件和必要条件的定义即可判定出结果.【详解】因为为偶函数,且在单调递增,所以函数在单调递减,且函数关于y轴对称.若时,根据函数单调性可得,即,所以由不能推出;若,根据函数的单调性可得:,也不能推出,综上,是的既不充分也不必要条件.故选D【点睛】本体主要考查充分条件和必要条件的判定,结合函数的单调性即可作答,属于基础题型.6.某调查机构对全国互联网行业进行调查统计,得到整个互联网行业从业者年龄分布饼状图、90后从事互联网行业者岗位分布条形图,则下列结论中不一定正确的是( ). 注:90后指1990年及以后出生,80后指1980-1989年之间出生,80前指1979年及以前出生.A. 互联网行业从业人员中90后占一半以上B. 互联网行业中从事技术岗位的人数超过总人数的20%C. 互联网行业中从事运营岗位的人数90后比80前多D. 互联网行业中从事技术岗位的人数90后比80后多【答案】D【解析】【分析】本道题分别将各个群体的比例代入,即可。

2019年安徽合肥高三一模英语试卷-学生用卷

2019年安徽合肥高三一模英语试卷-学生用卷

2019年安徽合肥高三一模英语试卷-学生用卷一、阅读理解(共15小题,每题2分,计30分)1、【来源】 2019年安徽合肥高三一模第11题6分(每题2分)2019~2020学年高三上学期单元测试(A篇)第1~3题6分(每题2分)Panama City, PanamaFor beach vacations that get you out of town and invite you and your family to dive into culture, consider a trip to Panama City. Here, you will enjoy beaches and city exploring. Book your stay at the Westin Playa Bonita, where you can book a room starting at $222 a night. There are various programs, including beach Olympics, stargazing(天体观察)and Spanish lessons.Jupiter, FloridaThis place offers you quality time you can spend with your loved ones. Book your stay at Jupiter Beach Resort & Spa, with rates for a family of four starting at $207 a night. Here, you can shoot baskets at the basketball courts, take a dip in the pool or teach your children beach yoga.San Diego, CaliforniaThe West Coast is a great spot for cheap beach vacations, so tell your family to pack their bags for a visit to San Diego. A cheap$10 Uber ride from the airport will have you pulling up the Kona Kai Resort & Spa. Here, a family of four can stay in a Deluxe Guest Room starting at$159 per night. Your kids can practice cannonballs at the pool after a visit to the world-famous San Diego Zoo.Kihei Maui, HawaiiFor West Coasters who are growing bored with their backyard, fly to the islands of Hawaii. Stay at the Aston at the Maui Banyan, with a charge of $179 a night for a family of four. Here, you'll witness some of the best sunsets of your life while your kids splash(戏水)in the Pacific, And if you're set on cookinga fancy meal, you'll enjoy suites that come with a full kitchen.(1) Which of the following charges you least a nightA. The Aston at the Maui Banyan.B. The Westin Playa Bonita.C. The Kona Kai Resort & Spa.D. Jupiter Beach Resort & Spa.(2) What can you do at the Aston at the Maui Banyan?A. Admire beautiful sunsets.B. Visit a world-famous zoo.C. Observe fantastic stars.D. Play some beach sports.(3) What is the common feature of the four destinationsA. They all offer rooms with a full kitchen.B. They are all intended for family trips.C. They all pick up visitors from the airport.D. They all provide bike riding on the beach.2、【来源】 2019年安徽合肥高三一模第12题8分(每题2分)Created in 1998 by Casey and Shelley Black, the Northern Lights Wildlife Wolf Center focuses on not only rescuing young abandoned wolves but educating the public. Unlike other centers, you can actually walk with the wolves and have exciting, hands-on interaction with them here. And so, we gathered one late winter morning to learn, prepare and walk.Scrappy and Flora, our wolves that day, were brought to the center when only a few days old. "They lived in the house with us for the first several months. We treated them like human babies, fed them and slept with them, "said Shelley. So, they are totally used to people. However, these are wild animals. For that reason, Shelley and Casey explained, the walk is totally on the wolf's terms. "We don't approach them, but if they come up to us, we can touch them."With all this in mind, we headed for the woods. We were walking on a logging road when suddenly, Flora, all 60 pounds of her, hurried up to me and raised up on her legs. She was almost as tall as me. As she leaned in, put her huge muddy paws on my shoulders and sniffed my face, apparently she was saying hello in wolf talk.We walked farther, maybe half a mile, while Scrappy and Flora dashed in and out of the woods stopping to occasionally roll in the snow, dig for this or that and just play. Then we all headed into the trees to a picturesque stream where the wolves splashed, drank and had a great time.One could point out that this whole adventure was staged and quite artificial. But the purpose, Casey and Shelley said, is to explain the wolves' place in the environment and, primarily, to let people know wolves don't have to be universally feared—they really don't hide secretly in the woods just waiting to eat people, but they'd rather avoid people, for the most part.(1) How is the Northern Lights Wildlife Wolf Center different from others?A. It trains and educates wild wolves.B. It aims to rescue young abandoned wolves.C. It raises wolves for commercial purposes.D. It allows visitors to take a walk with wolves.(2) What can be inferred from Shelley and Casey's explanation in Paragraph 2A. The walk can be potentially dangerous.B. The wolves have lost all their wildness.C. People should get close to the wolves actively.D. The wolves can read people's mind like human babies.(3) Why did Flora behave like that when she saw the author on the logging roadA. To express curiosity.B. To show friendliness.C. To attract attention.D. To seek companionship.(4) Why do Casey and Shelley organize such an adventureA. To advertise the center.B. To publicize wolf hunting.C. To promote environmental protection.D. To clarify some conventional views of wolves.3、【来源】 2019年安徽合肥高三一模第13题8分(每题2分)Have you ever heard of agritourism where you can experience farm life? If not, Dr. Cindy Ayers Elliott will tell you the real story of Foot Print Farms.The original concept of building Foot Print Farms was simple. When Ayers Elliott returned to her hometown after graduation, she didn't have to look any further than her state's alarming health statistics to find a mission. Everywhere she turned, there were reports of high blood pressure, diabetes, obesity and heart disease. "The problem was already identified. " explains Ayers Elliott. "Too many Mississippianswere seriously unhealthy and it didn't take research to see that. And many of the state's greatest health challenges could directly result from poor diet. "These days, Foot Print Farms, which started with a few raised beds of herbs and vegetables, is making fresh, naturally grown food. "When speaking of the key to my success, the co-op model works because we share the work and rewards, " notes Ayers Elliott. " A perfect example is the Wingfield High School football team. To earn the money for equipment and other items, players committed to working five hours a week on the farm, and by the end of the summer they had produced 1, 000 melons and the profits from their sales helped to buy weights, T shirts, sweat suits and pregame meals. But the lessons they learned about the rewards of hard work and working together to accomplish something were even more valuable products of their efforts. ""It's a model that can easily be learned in other places and I'm looking forward to seeing some of our current partners do just that—to take what they have learned here and spin it off in other communities, " Ayers Elliott remarks. She is now looking forward to developing an agritourism aspect to the farm, where visitors can experience farm life, learn new skills and take with them seeds of inspiration they can sow in their own communities when they return home.(1) What made Ayers Elliott set up Foot Print Farms?A. The problems faced by local farmers.B. Her further research into heart disease.C. The failure of her career after graduation.D. The health state of people in her hometown.(2) Why does the author take the football team as an example?A. To advocate the concept of independence.B. To stress the importance of teamwork.C. To support the idea of co-op model.D. To explore the key to success.(3) What is Ayers Elliott's attitude towards the future of Foot Print Farms?A. Optimistic.B. Skeptical.C. Cautious.D. Ambiguous.(4) What is the main idea of the text?A. Naturally grown food benefits people's health.B. Food Print Farms is making a difference in Mississippi.C. Ayers Elliott encourages people to experience farm.D. Agritourism is becoming increasingly popular in America.4、【来源】 2019年安徽合肥高三一模第14题8分(每题2分)2018~2019学年5月湖南长沙雨花区雅礼中学高三下学期月考第28~31题8分(每题2分) We can video chat with astronauts aboard the International Space Station and watch live footage from the frozen heights of Everest. But communicating with a submarine (潜艇)or a diver is not so easy. The lack of practical methods for sharing data between underwater and airborne devices has long been a frustration for scientists. The difficulty stems from the fact that radio signals work perfectly in air travel but poorly in water. Sonar (声呐)signals used by underwater sensors reflect off the surface of the water rather than reaching the air.Now, researchers at MIT have developed a method with the potential to revolutionize underwater communication. "What we've shown is that it's actually TAL#NBSP feasible to communicate from underwater to the air, " says Fadel Adib, a professor at MJT's Media Lab, who led the research.The MIT researchers designed a system that uses an underwater machine to send sonar signals to the surface, making vibrations (震动)corresponding to the 1s and 0s of the data. A surface receiver then reads and decodes these tiny vibrations. The researchers call the system TARF. It has any number of potential real-world uses, Adib says. It could be used to find downed planes underwater by reading signals from sonar devices in a plane's black box and it could allow submarines to communicate with the surface.Right now the technology is low-resolution. The initial study was conducted in the MIT swimming pool at maximum depths of around 11 or 12 feet. The next steps for the researchers are to see if TARF is workable at much greater depths and under varying conditions-high waves, storms, schools of fish. They also want to see if they can make the technology work in the other direction-air to water.If the technology proves successful in real-world conditions, expect "texting while diving" to be the latest underwater fashion.(1) What does the author mainly talk about in Paragraph 1A. The future of video chat underwater and in air.B. The frustrations of developing underwater devices.C. The difficulty of communication from water to air.D. The current situation of communicating with a submarine.(2) What does the underlined word "feasible" mean?A. Achievable.B. Convenient.C. Changeable.D. Alternative.(3) What do we know about TARFA. It is widely used to find downed planes.B. It can work well at great depths underwater.C. It is an underwater machine that sends signals.D. It can send, receive and read signals from underwater.(4) What is the best title for the textA. The Real-world Uses of Sonar TechnologyB. Full Water-to-air Communication Closer to RealityC. A Breakthrough in the Application of Video ChatD. TARF Becoming a New Means of Communication二、短文填空(共5小题,每题2分,计10分)5、【来源】 2019年安徽合肥高三一模第15题10分(每题2分)Apologizing the Right Way to a Friend Why are apologies so difficult? Saying you are sorry can be one of the most difficult things you do. But we all make mistakes, so you'll probably have an occasion when you need to apologize.Perhaps you had a big blow up and realized later you reacted poorly.1. Whatever the reason, apologizing can help you both heal and move on from the situation.2. First, you acknowledge that you did something wrong. With an apology, you take responsibility for your actions, which allows your friend to forgive you. Second, anapology gives you sincerity as a friend.3, but that doesn't mean you still shouldn't apologize.Now, what are elements of a proper apology?4, depending on what the offense was, where it was done, and who you are apologizing to. In general, a good apology should include the following: a request for their attention, an acknowledgment of what happened, sincerity in admitting you did something wrong and the words. "I'm sorry" or "I apologize. "Here are things never to say when apologizing. Note that the art of apologizing involves taking responsibility. Never apologize as a way to "shut someone up" when they are saying you hurt their feelings and you don't think you did.5, you should talk things through with your friend until you see why they are hurt or how you came across. You'll really need to self-reflect so you can see things from your friend's point of view.A. When you make your apology in personB. If you really believe you did nothing wrongC. Apologies benefit friendships in a variety of waysD. The way you apologize is going to be slightly differentE. Or maybe you just didn't show support when you needed toF. Apologizing the right way, however, may take a little practiceG. Sometimes our pals forgive us easily for the minor things we do wrong三、完形填空(共20小题,每题1.5分,计30分)6、【来源】 2019年安徽合肥高三一模第16题30分Greenberg was a lucky guy to enter Columbia University on full scholarship. But just before junior year, Greenberg's1changed. One day his vision"2up" and later he was diagnosed(诊断)with glaucoma(青光眼). Then doctors operated on Greenberg's eyes.3, the surgery didn't work. Greenberg was going blind. He was so4that he refused to see anyone.As Greenberg's best friend, Arthur persuaded Greenberg to go back to Columbiaand5to be his reader. Arthur read6to him every day, taking time out from his own study, and Greenberg7scoring straight A's. Still, he was8about getting around alone and relied on his friend.Then, one afternoon, Greenberg and Arthur went to Midtown Manhattan. When it was time to go back to campus, Arthur said he couldn't9him because of an appointment. Greenberg10. They argued, and Arthur walkedoff,11Greenberg alone in Grand Central Terminal.Greenberg, who was completely12, stumbled(蹒跚)through the rush-hour crowd. He took a shuttle train west to Times Square, and then transferred to an uptown train. Four miles later, he13at the Columbia University stop.At the university's gates, someone14him. "Oops, excuse me, sir." Greenberg15the voice. It was Arthur's. Greenberg's first reactionwas16, but in the next second, he realized what he hadjust17—and realized, too, who had made itpossible.18, Arthur had been with him the whole way, using one of the most19strategies.Blindness doesn't make Greenberg fail to appreciate the20of life. He always says he is the luckiest man in the world.A. faithB. attitudeC. fortuneD. reputationA. litB. steamedC. clearedD. cheeredA. OtherwiseB. MoreoverC. ThereforeD. HoweverA. shyB. desperateC. selfishD. nervousA. offeredB. pretendedC. happenedD. learnedA. lettersB. newspapersC. textbooksD. magazinesA. ended upB. carried onC. imaginedD. consideredA. curiousB. confidentC. excitedD. tentativeA. abandonB. rescueC. comfortD. accompanyA. compromisedB. panickedC. explainedD. apologizedA. leavingB. findingC. consultingD. servingA. tiredB. amusedC. confusedD. satisfiedA. got offB. pulled overC. looked aroundD. ran awayA. turned toB. shouted atC. knocked intoD. quarreled withA. raisedB. lostC. controlledD. recognizedA. angerB. pleasureC. reliefD. sorrowA. missedB. questionedC. ignoredD. achievedA. GraduallyB. FinallyC. ObviouslyD. StrangelyA. brilliantB. familiarC. defensiveD. complexA. magicB. beautyC. wisdomD. truth四、适当形式填空(共10小题,每题1.5分,计15分)7、【来源】 2019年安徽合肥高三一模第17题15分The makeup of British families has changed1(rapid)over the last two hundred years. The traditional family structure(结构)before the Industrial Revolution was the extended family in2three generations lived under one roof. The early twentieth century saw the3( grow)of the nuclear family-parents and a small numberof4(child)would form a single family. In the last thirty years, however, the UK5( see)a breakdown of the typical nuclear family.Increased divorce rates, later marriage and a move away from marriage altogether haveresulted6new forms of family; divorced parents will develop new relationships and take their kids with them. A survey7( conduct)by researchers shows that over 50% of kids are now born to parents who are not married.Some minority communities stick to the extended family structure, and it iscommon8(find)that three generations are living together in an Indian family. They say that apart from strengthening traditional family ties,9can provide security for older people when they cannot work anymore. They believe that the phenomenon of other old people living in care homes10(indicate)that many old people in the wider community are abandoned in their old age.五、短文改错(共10小题,每题1分,计10分)8、【来源】 2019年安徽合肥高三一模第18题10分(每题1分)假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。

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