考前强化小题训练12月6日

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2023届广东省广州市高三上学期12月调研测试高效提分物理试题(基础必刷)

2023届广东省广州市高三上学期12月调研测试高效提分物理试题(基础必刷)

2023届广东省广州市高三上学期12月调研测试高效提分物理试题(基础必刷)一、单项选择题(本题包含8小题,每小题4分,共32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)(共8题)第(1)题如图所示,三个完全相同的带负电的小球,b处于水平向右的匀强电场中,c处于垂直于纸面向里的匀强磁场中。

不计空气阻力,三小球从同一高度静止落下,设它们落地前瞬间的速度大小分别为,则( )A.b小球在空中做匀变速曲线运动,轨迹是一条抛物线B.三小球在落地前动量变化率恒定不变C.D.第(2)题一辆客车以v0=36km/h的速度在平直的公路上匀速行驶。

因意外急刹车,刹车的加速度大小为5m/s2,开始刹车的同时,车厢顶部A点脱落一个螺钉。

若车厢内高度为1.8m,螺钉落到车厢地板上B点不弹起,则B点距A点的水平距离为(取g=10m/s2)( )A.1.2m B.0.9m C.0m D.3.2m第(3)题如图所示,一卫星在赤道平面内绕地球做匀速圆周运动,其轨道半径小于地球同步卫星的轨道半径,某时刻该卫星位于赤道上一建筑物的正上方。

下列说法正确的是( )A.地球自转角速度大于该卫星的角速度B.建筑物随地球运动的向心加速度大于该卫星运动的向心加速度C.建筑物随地球运动的线速度大于该卫星运动的线速度D.经过一段时间该卫星可以再一次出现在此建筑物上空第(4)题如图所示,轻绳AO和BO共同吊起质量为m的重物.AO与BO垂直,BO与竖直方向的夹角为,OC连接重物,则( )A.AO所受的拉力大小为mg tanB.AO所受的拉力大小为C.BO所受的拉力大小为mg cosD.BO所受的拉力大小为第(5)题滹沱河生态区的水景喷泉和灯光秀美丽壮观,如图所示,水流从喷嘴喷出,其初速度与竖直方向的夹角为30°。

现制作一个大小为实际尺寸的的模型展示效果,若模型中水流由喷嘴喷出的初速度为1m/s,则水流实际的初速度为(重力加速度g取)( )A.4m/s B.8m/s C.10m/s D.12m/s第(6)题关于物理学的研究方法,下列说法正确的是( )A.法拉第用归纳法得出了电磁感应的产生条件B.由牛顿运动定律可知加速度,该公式体现了比值定义法C.伽利略猜想自由落体运动的速度与下落时间成正比,并直接用实验进行了验证D.在推导匀变速直线运动位移公式时,把整个运动过程划分成很多小段,每一小段近似看作匀速直线运动,然后把各小段的位移相加,这里采用了理想模型法第(7)题如图所示,A、B两物体叠放在一起,以相同的初速度上抛(不计空气阻力),到回到出发点的过程中,下列说法正确的是( )A.上升过程A、B处于超重状态,下降过程A、B处于失重状态B.上升和下降过程A、B两物体均为完全失重C.上升过程中A物体对B物体的压力大于A物体受到的重力D.下降过程中A物体对B物体的压力大于A物体受到的重力第(8)题关于光电效应,下列说法正确的是( )A.从金属表面逸出的光电子的最大初动能越大,此金属的逸出功越小B.无论光的频率多低,只要光照时间足能长就能产生光电效应C.同种金属逸出光电子的最大初动能与入射光的频率有关D.遏止电压与入射光的频率无关二、多项选择题(本题包含4小题,每小题4分,共16分。

高三化学考前强化训练

高三化学考前强化训练

6.用N A 表示阿伏加德罗常数的值,下列叙述正确的是A .标准状况下,11.2L 氯仿中含有的C-Cl 键的数目为1.5N AB .标准状况下,30g NO 和16gO 2混合所生成的气体分子数为N AC .12g 石墨晶体中碳原子构成的正六边形的数目为0.5N AD .28g 铁粉与足量Cl 2反应时转移的电子数为N A 7.某混合溶液中可能含有下列离子中的若干种:K +、Na +、Fe 2+、Fe 3+、SO 42-、NO 2-、CO 32-,现取三份20mL 该 溶液进行如下实验:(1)第一份加入足量盐酸,无任何气体产生(2)第二份加入足量NaOH 溶液,经搅拌、 过滤、洗涤、灼烧,最后得到xg 固体(3)第三份滴加0.10 mol ·L -l酸性KMnO 4溶液,恰好完全反应,消耗 其体积为VmL(4)另用洁净的铂丝蘸取该混合溶液置于浅色火焰上灼烧,发现火焰呈现黄色根据上述实验, 以下说法正确的是A .原混合溶液中只存在Na +、Fe 3+、SO 42-,不可能存在K +、CO 32- B .由实验(1)无法推断原混合溶液中是否含有SO 42-C .由实验(2)、(3)可判定原混合溶液中是否含有Fe 3+D .由实验(3)可判定原混合溶液中存在NO 2- 8.下列热化学方程式或离子方程式中,正确的是:A .甲烷的标准燃烧热△H 为-890.3kJ ·mol -1,则甲烷燃烧的热化学方程式可表示为:CH 4(g)+2O 2(g)=CO 2(g)+2H 2O(g) ; △H=-890.3kJ ·mol -1B .500℃、30MPa 下,将0.5molN 2(g )和1.5mol H 2(g )置于密闭容器中充分反应生成NH 3(g ),放热19.3kJ ,其热化学方程式为:N 2(g )+3H 2(g )2NH 3(g ) ;△H= -38.6kJ ·mol -1C. 向明矾溶液中加入过量的氢氧化钡溶液:322442222422Al SO Ba OH BaSO AlO H O +-+--+++=↓++D. 用浓盐酸酸化的K M n O 4溶液与H 2O 2反应,证明H 2O 2具有还原性:2MnO 4-+6H ++5H 2O 2=2Mn 2++5O 2↑+8H 2O 9. 某课外实验小组设计的下列实验合理的是10.用水热法制备Fe 3O 4纳米颗粒的总反应如下:3Fe 2++2S 2O 32-+O 2+4OH -=Fe 3O 4+S 4O 62-+2H 2O 。

2021年高三12月练习试题(政治)

2021年高三12月练习试题(政治)

2021年高三12月练习试题(政治)一.单项选择题:在每题给出的四个选项中,只有一项最符合题意,每题2分,共66分。

1.北大校长接受记者提问时说:“我们要求理科专业的学生要重视文科知识的学习,文科专业的学生要重视理科知识的学习。

”这说明A.哲学是对自然和社会知识的概括和总结,缺乏文科或理科知识,很难形成科学的世界观和方法论B.单一的文科或理科知识都不是独立的完整的知识C.随着科学的发展,文理科知识的界限正在消失D.文理知识相互贯通,只有精通理科才能学好文科,反之亦然2. 承办xx年第二届夏季青年奥运会是南京市委、市政府从南京的实际出发,为全面展示南京历史文化名城的魅力以及现代化都市的生机和活力,进一步加快南京经济社会发展的一项重大决策。

这体现了A.物质与意识不可分 B.物质与意识同等重要C.思维与存在具有同一性 D.思维是对存在的正确反映3. “一个人不过是自然界一株脆弱的芦苇,但这是一株会思考的芦苇,人因思想而伟大。

”与此观点意义相同的是A.我思故我在 B.思维是地球上最美的花朵C.物是观念的集合 D.人是万物的尺度4. 魔术是一门集知识性、科学性、趣味性于一体的艺术,它是魔术表演者依据科学的原理,运用特制的道具,进行的种种奇幻莫测的表演。

关于魔术,下列说法正确的是A.魔术表演是对规律的利用和改造 B.魔术制造的奇幻现象是不存在的C.魔术表演的神奇来自对客观条件的利用D.魔术表演者的创造性思维是奇幻现象的来源5.世界旅游胜地敦煌由于生态环境恶化,过度开采地下水,导致党河、疏勒河下游断流,湿地萎缩,树林锐减,沙化面积平均每年增加近2万亩。

“沙进人退”趋势如得不到遏制,敦煌有可能成为人类历史上第二个楼兰古国,世界文化遗产莫高窟和国家级风景名胜区月牙泉也将不复存在。

上述材料说明①规律是客观存在的②规律的存在和发生作用不以人的意志为转移③违背规律必然受到规律的惩罚④规律起作用的条件和方式不会发生变化A.①②③ B.①②④ C.①③④D.②③④6.漫画《没有过不去的桥》告诫我们:发挥人的主观能动性A.能够限制或排除不利条件的影响B.可能会受到客观条件的阻碍C.就能办好一切事情D.必须尊重客观规律、正视客观条件7.塑料袋,这种既轻便又结实的包装物在当时无异于一场革命,受到人们的广泛欢迎,然而随着塑料袋产生的垃圾对地球的污染越来越严重,各国都在采取对策应对这一“白色污染”。

高考数学12月月考考前强化与演练一理 试题

高考数学12月月考考前强化与演练一理 试题

卜人入州八九几市潮王学校2021高考理科数学12月月考考前强化与演练〔一〕一、选择题〔本大题一一共12小题,每一小题5分,一共60分,每一小题给出的四个选项里面,只有一项为哪一项哪一项符合题目要求的,请将正确答案的代号填在答卷的相应表格内〕 1.全集U=R ,那么正确表示集合{}1,0,1M=-和{}2|0N x x x =+=的关系韦恩〔Venn 〕图是〔〕2.1=3-=〔〕A .{}1-B .{}3C .{}1,3-D .φ3.函数()f x ,x F ∈,那么集合{}{}(,)|(),(,)|1x y y f x x F x y x =∈=中所含元素的个数是〔〕A .0B .1C .0或者1D .0或者24.假设函数()y f x =的值域为1,32⎡⎤⎢⎥⎣⎦,那么函数1()()()F x f x f x =+的值域是〔〕 A .1,32⎡⎤⎢⎥⎣⎦B .102,3⎡⎤⎢⎥⎣⎦C .510,23⎡⎤⎢⎥⎣⎦D .103,3⎡⎤⎢⎥⎣⎦5.为了得到函数3lg10x y +=的图象,只需把函数lg y x =的图象上所有的点〔〕 A .向左平移3个单位长度,再向上平移1个单位长度 B .向右平移3个单位长度,再向上平移1个单位长度 C .向左平移3个单位长度,再向下平移1个单位长度 D .向右平移3个单位长度,再向下平移1个单位长度6.对,a b R ∈,设max(,)a a ba b b a b⎧≥⎪=⎨⎪⎩,那么函数{}()max |1|,|2|f x x x =+-x R ∈的最小值是〔〕 A .0B .12C .32D .3 7.“a <0”是方程“2210ax x ++=至少有一个负根〞的〔〕A .必要不充分B .充分不必要C .充要条件D .既不充分也不必要ABCD8.如图是幂函数m y x =与n y x =在第一象限内的图象,那么〔〕A .-1<n <0<m <1B .0<m <1C .-1<n <0,m >1D .n <-1,m >19.定义在R 上的偶函数()y f x =在[)0,+∞上递减,且1()02f =,那么满足不等式14(log )0x f 的x 的集合为〔〕A .1(,)(2,)2-∞+∞B .1(,1)(1,2)2C .1(,1)(2,)2+∞D .1(0,)(2,)2+∞ 10.:定义在R 上的奇函数()f x 满足(4)()f x f x -=-,且在[0,2]上是增函数,那么〔〕A .f(-25)<f(11)<f(80)B .f(80)<f(11)<f(-25)C .f(11)<f(80)<f(-25)D .f(-25)<f(80)<f(11)11.图形M 是由底为1,高为1的等腰三角形及高为2和3的两个矩形构成,函数()SS a =〔a ≥0〕是图形M 介于平行线y=0及y=a 之间的那一局部的面积,那么函数()S a 的图象大致是〔〕12.定义在R 上的函数()f x 满足(1)2log 0()(1)(2)0x x f x f x f x x-⎧≤⎪=⎨---⎪⎩那么(2009)f 的值是〔〕A .-1B .0C .1D .2二、填空题〔本大题一一共4小题,每一小题4分,一共16分,请将正确答案填写上在横线上〕 13.{0,1},{|},A B x x A ==⊆则AB(用,,,∈∉⊆⊂≠填空)。

2024年河北省张家口市高三上学期12月阶段检测高效提分物理试题(基础必刷)

2024年河北省张家口市高三上学期12月阶段检测高效提分物理试题(基础必刷)

2024年河北省张家口市高三上学期12月阶段检测高效提分物理试题(基础必刷)学校:_______ 班级:__________姓名:_______ 考号:__________(满分:100分时间:75分钟)总分栏题号一二三四五六七总分得分评卷人得分一、单项选择题(本题包含8小题,每小题4分,共32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)(共8题)第(1)题图甲是浇花的一种喷壶,图乙是喷壶的切面图,假设喷壶中装有一部分酒精但未装满,里面有一部分大气压为p0的空气。

现将喷壶的盖盖好并密封阀门后,再通过打气筒向喷壶内充入一部分大气压也为p0的气体,并保持阀门关闭,假设此充气过程中壶内气体温度保持不变。

研究的气体可视为理想气体,不考虑酒精的蒸发,下列说法正确的是( )A.壶内充入气体,壶内气体的分子的平均动能增加B.阀门打开后喷嘴中有雾状酒精喷出是由瓶内酒精分子存在斥力C.阀门打开后壶内气体的压强不断减小D.从喷壶中喷出的酒精水雾飘在空中后,水雾的运动为布朗运动第(2)题如图所示,壁虎在竖直玻璃面上斜向上匀速爬行,关于它在此平面内的受力分析,下列示意图中正确的是( )A.B.C.D.第(3)题在图(a)所示的交流电路中,电源电压的有效值为20V,理想变压器原、副线圈的匝数比为,电阻、、阻值相同。

通过理想电流表的电流随时间t变化的正弦曲线如图(b)所示。

下列说法正确的是( )A.交流电的频率为100Hz B.理想电压表的示数为4VC.的阻值为D.副线圈的输出功率为第(4)题如图所示,在同一竖直平面内,小球A、B上系有不可伸长的细线a、b、c和d,其中a的上端悬挂于竖直固定的支架上,d跨过左侧定滑轮、c跨过右侧定滑轮分别与相同配重P、Q相连,调节左、右两侧定滑轮高度达到平衡。

已知小球A、B和配重P、Q 质量均为,细线c、d平行且与水平成(不计摩擦),则细线a、b的拉力分别为( )A.,B.,C.,D.,第(5)题氡222()衰变为钋218()的半衰期为3.8天,则氡222衰变释放出的粒子和密闭房间中氡气浓度减少87.5%需要的时间分别为( )A.中子,11.4天B.α粒子,7.6天C.中子,19天D.α粒子,11.4天第(6)题如图所示,轻杆OA与轻杆OB通过光滑铰链安装在竖直墙面上,另一端通过铰链连接于O点。

淮阴中学小升初数学分班考前强化训练试题(共18套)

淮阴中学小升初数学分班考前强化训练试题(共18套)

淮阴中学小升初考前强化训练试题(一)一、填空题(每题5分,共60分)1.6.3÷2.2=( )……( )2.3.6×27 +1819 ×47 +419 ×17 =( )3.=⨯+⋯⋯+⨯+⨯+⨯2002200114313212111( )4.已知a +234 =a ×234,那么a=( )5.把三个完全相等的正方体拼成一个长方体,这个长方体的表面积是350平方厘米,每个正方体的表面积是( )平方厘米。

6.某市奥林匹克学校进行速算比赛,共出了1000道题,甲每分可算出30道题,乙每算出50道题比甲算同样多的题少用3秒,乙做完1000题,甲还有( )题没有做出。

7.有一个分数约成最简分数是511,约分前分子分母的和等于48,约分前的分数是( )。

8.甲、乙两人加工同一种零件,甲加工的零件个数比乙少20%,乙加工的时间比甲少16,乙的工作效率是甲的( )%。

9.10000千克葡萄在新疆测得含水量是99%,运抵太原后测得含水量为98%,问葡萄运抵太原后还剩( )千克。

(途中损失不计)10.有两根长短粗细不同的蚊香,短的一根可燃8小时,长的一根可燃的时间是短的12,同时点燃两根蚊香,经过3小时,它们的长短正好相等,未点燃之前,短蚊香比长蚊香短( )。

11.如图所示,以B 、C 为圆心的两个半圆的直径都是2厘米,则阴影部分的周长是( )厘米。

(保留两位小数)12.一个直圆锥的体积是120立方厘米,将圆锥体沿高的13处横截成圆台,将这个圆台放入圆柱形纸盒,纸盒的容积至少是( )立方厘米。

二、应用题(写出主要的解答过程或推理过程,每题10分,共60分)1.小明看一本故事书,第一天看了20页,第二天看了余下的25,这时,未看的与已看的页数相等,这本书共有多少页?(至少用3种方法)2.修一条公路,将总任务按5:6的比例分配给甲、乙两个工程队,甲队先修了630米,完成了分配任务的70%,后来甲队调走,余下的任务由乙队修完,乙队一共修了多少米?3. 有一批书要打包后邮寄,要求每包内所装书的册数相同,用这批书的712打了14个包还多35本,余下的书连同第一次多的零头刚好又打了11包,这批书共有多少本?4. 水果商店运来桔子、苹果和梨共410千克,其中桔子是梨的2倍,梨比苹果的21少10千克,三种水果各多少千克?5. 小明早上从家步行去学校,走完一半路程时,爸爸发现小明的数学书丢在家里,随即骑车去给小明送书,追上时,小明还有310的路程未走完,小明随即上了爸爸的车,由爸爸送往学校,这样小明比独自步行提早5分钟到校。

高考数学12月月考考前强化与演练二理 试题

高考数学12月月考考前强化与演练二理 试题

2021高考理科数学12月月考制卷人:歐陽文化、歐陽理複;制卷時間:二O 二二年二月七日考前强化与演练〔二〕一、选择题〔本大题一一共12小题,每一小题5分,一共60分,每一小题给出的四个选项里面,只有一项是哪一项符合题目要求的,请将正确答案的代号填在答卷的相应表格内〕 1.集合{}0,2,A a =,{}21,B a =,假设{}0,1,2,4,16AB =,那么a 的值是〔 〕A .0B .1C .2D .42.设函数⎩⎨⎧<+≥+-=0,60,64)(2x x x x x x f 那么不等式)1()(f x f >的解集是 〔 〕A ),3()1,3(+∞⋃-B ),2()1,3(+∞⋃-C ),3()1,1(+∞⋃-D )3,1()3,(⋃--∞3.函数y〔 〕A .奇函数B .偶函数C .非奇非偶函数D .既是奇函数又是偶函数4.命题“对任意的x ∈R ,3210x x -+≤〞的否认是〔 〕A .不存在x ∈R ,3210x x -+≤B .存在x ∈R ,3210x x -+≤C .存在x ∈R ,3210x x -+> D .对任意的x ∈R ,3210x x -+>5.以下四个函数中,在区间〔-1,0〕上为减函数的是〔 〕A .x y 2log =B .y=cosxC .xy )21(-=D .31x y =6.假设一系列函数的解析式一样,值域一样,但定义域不同,那么称这些函数为“孪生函数〞, 那么函数解析式为122+=x y ,值域为{5,19}的“孪生函数〞一共有〔 〕A .10个B .9个C .8个D .7个7.设全集)},1ln(|{},12|{,)3(x y x B x A R U x x --==<==+那么右图中阴影局部表示的集合为 〔 〕 A .{x |x >0}B .}03|{<<-x xC .}13|{-<<-x xD .}1|{-<x x8、幂函数(1) 1-=xy以及〔2〕直线y=x ,〔3〕y=1,〔4〕x=1将直角坐标系第一象限分成八个“卦限〞:Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ、Ⅷ,〔如下图〕,那么函数23-=x y 的图象在第一象限中经过的“卦限〞是〔 〕A 、Ⅳ、ⅦB 、Ⅳ、ⅧC 、Ⅲ、ⅧD 、Ⅲ、Ⅶ9.设函数)0()(2≠++=a c bx ax x f ,对任意实数t 都有)2()2(t f t f -=+成立,那么函数值)5(),2(),1(),1(f f f f -中,最小的一个不可能是 〔 〕A .)1(-fB .)1(fC .)2(fD .)5(f10、如图,正方形ABCD 的顶点2(0,)2A ,2(,0)2B ,顶点CD 、 位于第一象限,直线:(02)l x t t =≤≤将正方形ABCD 分成两局部,记位于直线l 左侧阴影局部的面积为()f t ,那么函数()S f t =的图象大致是〔 〕)(x f 是定义在实数集R 上的不恒为零的偶函数,且对任意实数x 都有)()1()1(x f x x xf +=+,那么)25(f 的值是A. 0B. 21C. 1D. 2512、.对于正实数α,记M α为满足下述条件的函数()f x 构成的集合:12,x x ∀∈R 且21x x >,有212121()()()()x x f x f x x x αα--<-<-.以下结论中正确的选项是 ( ) A .假设1()f x M α∈,2()g x M α∈,那么12()()f x g x M αα⋅⋅∈ B .假设1()f x M α∈,2()g x M α∈,且()0g x ≠,那么12()()f x M g x αα∈ C .假设1()f x M α∈,2()g x M α∈,那么12()()f x g x M αα++∈D .假设1()f x M α∈,2()g x M α∈,且12αα>,那么12()()f x g x M αα--∈二、填空题〔本大题一一共4小题,每一小题4分,一共16分,请将正确答案填写上在横线上〕13.命题“对任意的x R ∈,321x x -+≤0”的否认为 。

高考考前数学小题强化训练六

高考考前数学小题强化训练六

高考考前数学小题强化训练六时量:45分钟 满分:70分一、选择题(本大题共10个小题,每小题5分,在每小题给出的选项中,只有一项符合题目要求的)1.已知m 为实数,则函数f (x ) = x 2cos x + m 是( B )A .奇函数B .偶函数C .非奇非偶函数D .既奇又偶函数2.下列直线中,不是圆C :(x +1)2 + (y –1)2 = 1的切线方程的是( C ) A .x = 0 B .y = 0 C .y = x – 1D .y = x +2+2【解析】数形结合知y = x – 1不是圆C 的切线. 3.已知等差数列{a n }中a 5 + a 7 = 12,a 2 = 3,则a 10的值是( B ) A .10 B .9 C .8D .7【解析】∵a 5 + a 7 = a 2 + a 10 = 12,又a 2 = 3, ∴a 10 = 9.4.在锐角△ABC 中,设x =sin A sin B ,y =cos A ·cos B ,则x ,y 的大小关系是( C ) A .x ≥y B .x ≤y C .x >yD .x <y【解析】∵y – x = cos A cos B – sin A sin B = cos (A + B ),又A 、B 为锐角三角形两内角. 则ππ<+<B A 2,∴cos(A + B )<0,即y – x <0,∴x >y .5.已知球O 的截面把垂直于截面的直径分成1:3的两部分,若截面圆的半径为3,则球O 的体积为( A ) A .16πB .316πC .π332D .π34【解析】设球的半径为R ,则R 2=22)2(3R +,∴R 2= 4,∴S 球 = 4ππ162=R .6.已知条件p :|x + 1|>2,条件q :5x – 6>x 2,则┐p 是┐q 的( B )A .充分和要条件B .充分非必要条件C .必要非充分条件D .既非充分又非必要条件【解析】∵┐p :|x + 1|≤2⇔–2≤x + 1≤2⇔–3≤x ≤1,又┐q :5x – 6≤x 2即x 2 – 5x + 6≥0⇔x ≤2或x ≥3,故┐p ⇒┐q ,但┐q ⇒┐p .7.若f (m ) =nnm n ni n n c m c m mc c m ++++∑= 220100,则)1(log)3(log 22f f 的值为( B )A .21 B .2 C .31D .3【解析】∵f (m ) = m 0C n 0 + m 1C n 1 + m 2C n 2 +…+m n C n n = (1 + m )n ,∴f (3) = 4n ,f (1) = 2n , ∴22log4log )1(log)3(log 2222==nn f f .8.已知向量a = (1, 1),b = (1, –1),c =αcos 2(,)sin 2α)(R ∈α,实数m 、n 满足m a + n b = c ,则(m – 3)2 + n 2的最大值为( D ) A .2 B .3 C .4D .16【解析】由已知m a + n b = (m + n , m – n ) = c =)sin 2,cos 2(αα∴⎪⎩⎪⎨⎧=-=+ααsin 2cos 2n m n m ,∴⎪⎪⎩⎪⎪⎨⎧-=+=)sin (cos 22)sin (cos 22ααααn m∴(m – 3)2 + n 2 = m 2 + n 2 – 6m + 9 = 10 – 32(cos α+ sin α) = 10 – 6sin )4(πα+≤16.9.从6人中选出4个人分别到巴黎、伦敦、悉尼、莫斯科四个城市游览,要求每个城市有一人游览,每人只游览一个城市,且这6人中甲、乙两人不去巴黎游览,则不同的选择方案共有( B ) A .300种 B .240种 C .144种D .96【解析】先进1人到巴黎有4种方案,再从余下的5人中选3人到伦敦、悉尼、莫斯科,有A 35= 60种方案,由分步计数原理,共有4×60 = 240种,选B. 10.定义运算bcad db ca -=,则符合条件121211-+--x yy x = 0的点P (x , y )的轨迹方程为( A )A .(x – 1)2+ 4y 2= 1 B .(x –1)2 – 4y 2= 1 C .(x –1)2+ y 2 = 1D .(x –1)2– y 2= 1【解析】由已知)21()1(1212112y x x yy x +--=-+--(1 – 2y ) = 0,即(x – 1)2 + 4y 2 = 1.二、填空题(本大题共5个小题,每小题4分,共20分) 11.计算:αααcos )60cos()30sin(︒++︒+= 1 . (数字作答)【解析】原式=αααcos )60cos()60cos(+︒+-︒=1cos cos 60cos 2=︒αα12.为了让学生了解丢弃塑料袋对环境的影响,某班环保小组的六名同学记录了自己家中一周内丢弃的塑料袋的数量,结果如下(单位:个)33,25,28,26,25,31;如果该班有45名学生,根据提供的数据估计本周全班同学各家共丢弃的塑料袋共约 1512 个.【解析】五家庭丢弃塑料袋的平均数51685312526282533=+++++=x ,则45个家庭丢弃的塑料袋总量为45×15125168=.13.若函数f (x ) =⎪⎩⎪⎨⎧≥<+-)2(2)2()2(x x x f x,则f (–3)的值为81.【解析】f (–3) = f (–3 + 2) = f (–1 + 2) = f (1 + 2)= f (3) = 2–3 =81.14.甲、乙二人各有一个装有3张卡片的盒子,从中取卡片来比胜负,甲的盒子中卡片的号码是2张1,1张3;乙的盒子中卡片的号码是1张1,2张2,甲、乙两人同时从自己的盒子中取出1张比较,取出的不再放回,直到二人取的卡片号码不相同时,号码大的一方为胜,则甲获胜的概率是 .【解析】取一张卡片甲获胜的概率3133311=⨯⨯=P ,取两张卡片后甲获胜的概率91)21)(12(23232=⋅⨯⨯=A A P .故甲获胜的概率为P = P 1 + P 2 =949131=+.15.以下同个关于圆锥曲线的命题中①设A 、B 为两个定点,k 为非零常数,kPB PA =-||||,则动点P 的轨迹为双曲线;②过定圆C 上一定点A 作圆的动点弦AB ,O 为坐标原点,若)(21OB OA OP +=,则动点P的轨迹为椭圆;③方程2x 2 – 5x + 2 = 0的两根可分别作为椭圆和双曲线的离心率; ④双曲线92522yx-=1与椭圆13522=+yx有相同的焦点.其中真命题的序号为 4 . (写出所有真命题的序号)【解析】依题意有:P = 4n,S = 2n, ∴4n + 2n = 272, ∴22n + 2n – 272 = 0, ∴2n = 16,∴n = 4.。

2023届广东省广州市高三上学期12月调研测试全真演练物理试题(基础必刷)

2023届广东省广州市高三上学期12月调研测试全真演练物理试题(基础必刷)

2023届广东省广州市高三上学期12月调研测试全真演练物理试题(基础必刷)学校:_______ 班级:__________姓名:_______ 考号:__________(满分:100分时间:75分钟)总分栏题号一二三四五六七总分得分评卷人得分一、单项选择题(本题包含8小题,每小题4分,共32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)(共8题)第(1)题2024年我国新出土的一批文物,有人猜测可能为西汉(公元前202年到公元8年)前后的产物,经机构检测该批文物的含量为原来的70.7%。

已知的半衰期为5730年,则下列说法正确的是( )A.该批文物是西汉之后的产物B.该批文物是西汉之前的产物C.该批文物是西汉年间的产物D.考虑气候和地理环境对半衰期的影响,不能确定该批文物的年代第(2)题下列说法正确的是()A.光电效应表明光具有能量,具有波粒二象性B.根据玻尔理论可知,氢原子辐射出一个光子后,氢原子的电势能增大,核外电子的运动速度减小C.一束光照射到某金属上没能产生光电效应,是因为该束光的波长太短D.原子核所含核子单独存在时的总质量大于该原子核的质量第(3)题如图所示,匀强磁场的边界为平行四边形ABDC,其中AC边与对角线BC垂直,一束电子以大小不同的速度沿BC方向从B点射入磁场,不计电子的重力和电子之间的相互作用,关于电子在磁场中运动的情况,下列说法中正确的是( )A.入射速度越大的电子,其运动时间越长B.入射速度越大的电子,其运动轨迹越长C.从AB边出射的电子的运动时间都相等D.从AC边出射的电子的运动时间都相等第(4)题平时我们所处的地球表面,实际上存在场强大小为的电场,可将其视为匀强电场,在地面立一金属杆后空间中的等势面如图所示。

空间中存在a、b、c三点,其中a点位于金属杆正上方,b、c等高。

则下列说法正确的是( )A.b、c两点的电势差B.a点场强大小大于C.a点场强方向水平向右D.a点的电势低于c点第(5)题如图,固定的弹性金属圆环与螺线管共轴,在闭合开关S的瞬间,有关环中的感应电流I的方向(从环的右侧往左侧看)和环形变的说法正确的是( )A.顺时针方向,扩张B.顺时针方向,收缩C.逆时针方向,扩张D.逆时针方向,收缩第(6)题关于速度、加速度、合力间的关系,正确的是( )A.物体的速度越大,则物体的加速度越大,所受合力也越大B.物体的速度为零,则物体的加速度一定为零,所受合力也为零C.若物体的速度发生反向,加速度也发生反向D.物体的速度很大,加速度可能为零,所受的合力也可能为零第(7)题下列四幅图涉及不同的物理知识,其中说法正确的是( )A.图甲中1射线粒子流带正电B.图乙中氡的半衰期为3.8天,则经过11.4天,氡的质量减少了C.图丙中的玻尔能级理论可以解释衰变现象D.图丁中用中子轰击铀核使其发生裂变,方程式为第(8)题如图甲所示为用起重机将质量为m的重物吊起时的情形。

高考考前数学小题强化训练十三

高考考前数学小题强化训练十三

高考考前数学小题强化训练十三时量:45分钟 满分:70分一、选择题(本大题共10个小题,每小题5分,共50分,每小题给出的选项中,只有一项符合题目要求的)1.已知集合P = {x | x (x – 1)≥0},Q = {x |11-x >0},则P ∩Q 等于( C ) A .φB .{x |x ≥1}C .{x |x >1}D .{x |x ≥1或x <0}【解析】P = {x |≥0或x ≤0},Q = {x |x >1},∴P ∩Q = {x | x >1},选C. 2.在等差数列{a n }中,已知a 4 + a 6 = 12,S n 是数列{a n }的前n 项和,则S 9的值是( B ) A .48 B .54 C .60 D .66 【解析】因为S 9 = 9a 5,又a 4 + a 4 = 12 = 2a 5,∴S 9 = 54.3.若θ是第三象限角,且95cossin 44=+θθ,则sin2θ 的值为( C ) A .32 B .32-C .322 D .322-【解析】94)cos(sin 1cos sin 24422=+-=θθθθ,又0cos ,0sin <<θθ,故322cos sin 22sin ==θθθ.4.已知函数f (x ) = 3x – 1的反函数为y =)(1x f-,g (x ) = log 9(3x + 1),若)(1x f -<g (x ),则x 的取值范围是( B ) A .[0, 1] B .(0, 1) C .(–1, 0)D .[–1, 0]【解析】原不等式可化为: log 3 (1 + x ) < log 9 (3x + 1)⇔⎪⎩⎪⎨⎧>++<+⇔0113)1(2x x x 0<x <1.5.a 、b 、c 、d ∈R ,若a >0,b >0,a 2 – 2ab + c 2 = 0,bc >a 2,则a 、b 、c 的大小关系是( A ) A .b >c >a B .a >b >c C .c >b >aD .b >a >c【解析】a 2 + c 2= 2ab ≥2ac ,故b ≥c ,又bc >a 2,b >a ,故a 2+ c 2= 2ab >2a 2,故c >a ,从而b >c >a .6.设F 1、F 2是椭圆的两个焦点,若椭圆上存在点P ,使∠F 1PF 1 = 120°,则椭圆离心率e 的取值范围是( A )A .)1,23[B .)1,23(C .)23,0(D .)23,0(【解析】323||||2122121⋅=⋅=∆b PF PF S PFF ≤222143)2||||(43aPF PF =+⋅,即a 2≥4b 2 = 4(a 2– c 2),故e ≥23.7.如图在正三角形ABC 中,D 、E 、F 分别为各边的中点,G 、H 、I 分别为DE ,FC 、EF 之中点,将△ABC 沿DE 、EF 、DF 折成三棱锥以后,BG 与IH 所成的角为( A )A .6πB .3πFH I G A D BECC .arccos32 D .arccos33【解析】设A 、B 、C 重合于点O ,HI ∥OE ,所以BG ,IH 所成的角等于∠EOG ,易求∠EOG =6π.8.某地一天内的气温Q (t ) (单位:℃)与时刻t (单位:时)之间的关系如图所示,令C (t )表示时间段[0,t ]内的温差 (即时间段[0,t ]内最高温度与最低温度的差). C (t )与t 之间的函数关系用下列图象表示,则正确的图象大致是( D )【解析】由图看出,t = 0时,C (t ) = 0,排除B ;t = 4时,C (t ) = 2,排除A 、C ,故选D. 9.从0,1,2,3,4,5共6个数字中,取出3个数字组成没有重复数字的三位数,这些三位数中任取一个,则取出的三位数能被3整除的概率是( B ) A .51 B .52 C .53 D .31【解析】符合条件的三位数共有A 51A 52个,其中能被3整除的共有4A 21A 22 + 4A 33,故所求的概率P =52)(43515332212=+A A A A A .10.在实数x 1,x 2及函数f (x )满足)(1)(14x f x f x-+=,且f (x 1) + f (x 2) = 1,则f (x 1 + x 2)的最小值为( C )A .4B .2C .54D .41【解析】由题设得14211414)(+-=+-=xxx x f ,f (x 1)+ f (x 2) = 2 – 2)141141(21+++x x = 1,即1411+x +211412=+x . 设u =214,4x xv =,∵x 1>0,x 2>0,∴u >1,v >1,且211111=+++v u ⇒uv = u + v +3≥2323--⇒+uv uv uv ≥0uv⇒≤–1(舍去)或uv ≥3,∴uv ≥9,∴f (x 1 + x 2) =121142121+-=+-+uv x x ≥1–54192=+. 故应选C.二、填空题(本大题共5个小题,每小题4分,共20分,将最后结果填在题中的横线上) 11.一个社会调查机构就某地居民的月收入调查了10000人,并根据所得数据画了样本的频率分布直方图(如下图),为了分析居民的收入与年龄、学历、职业等方面的联系,要从这10000人中再用分层抽样的方法抽出100人作进一步调查,则在[2500,3000](元)月收入段应抽出 25 人.【解析】在[2500,3000]月收入段应抽出0005.020004.00003.00002.00001.00005.0⨯++++×100=25(人). 12.12)13(x x -展开式中x –3的系数是 594 .【解析】T r +1 =231212123)1(r rrr xC ---,令2312r -=–3得r = 10,∴x –3的系数是594.13.直线x + y = a 与圆x 2 + y 2 = 1相交于A 、B 两点,且||||OB OA OB OA-=+(O为原点),则实数a的值是 ±1 .解析:利用向量的加、减运算的几何意义易得a =±1.14.如下图,都是正方体的表面展开图,还原成正方体后,其中两个完全一样的是 (3)、(4).【解析】因为在还原正方体后,图形①、、③中的阴影部分总是相对着的,所以在图(1)中 和 , 和 , 和 是相对着的;同理可得图(2)中 和 、 和 、 和 是相对着的;图(3)中 和 、 和 、 和 是相对着的;图(4)中 和 , 和 , 和 是相对的,从而知(2)、(3)、(4)的相对面是相同的.又(2)、(3)、(4)平面图中 的相邻四个面分别为,由此图示可得仅(3)、(4)完全一样,故应填(3)、(4).15.计算机执行以下程序:(1)初始值x = 3,y = 0;(2)x = x + 2;(3)y = y + x ;(4)如果y ≥2006,则进行(5),否则从(2)继续运行;(5)打印x ;(6)stop ,则由语句(5)打印出的数值是 89 ,此时y 的值是 2021 .【解析】数值x 构成的数列{x n }满足:x 1 = 3,x 2 = 5,…,x n +1 = x n + 2,∴{x n }是公差为2的等差数列,且x n = 2n + 1,又由数值y 构成的数列{y n }满足y 1 = 0,y 2 = 5,…,y n +1 – y n = 2n + 3,∴y n = y 1 +(y 2 – y 1) + (y 3 – y 2) +…+(y n – y n +1)= 0 +5 + 7 +…+(n + 1) = (n – 1) (n + 3),由y n ≥2006,n ∈N *,解得n = 44,此时x 44 = 89,y 44 = 2021.※ ⊙ + △◇ × △ + ×◇ ⊙ ※ + △ ⊙ ※ × ◇ ⊙ + △ ⊙ ※ ◇ ×。

高三语文考前强化练习题3套

高三语文考前强化练习题3套

高三语文考前强化练习题3套高三语文考前强化练习题一、标点复习1.(河北省唐山一中2011届下学期高三年级高考仿真考试(四)语文试卷) 下列各句标点符号使用正确的一项是( )A.中国社会科学院15日在京发布2009年“农村经济绿皮书”,指出今年农业生产仍将保持良好态势,农业增加值和农民人均纯收入实际增长预计均为6%。

B.经济危机的影响使得大学生就业问题雪上加霜,有识之士马上支出奇招:大学生要就业首先要放下精英观念。

据说,只要不用精英教育的观念看待大学生就业,就不存在就业问题。

C.最近几十年来,因为“以药补医”机制,形成了扭曲的公立医院经济补偿机制和追求自身利益最大化的内在驱动,导致公立医院公益性弱化,群众“看病难、看病贵。

”D.官者,社会生活的组织者和管理者。

商者,社会财富的创造与流通的推动者。

学者,科学文化艺术的传承与弘扬者。

三者各司其职(“官”用好权,“商”赚得钱,“学”尊且贤)。

如此一来,百姓获益,社会有序,可曰:和谐。

2.(黑龙江省大庆实验中学2011届下学期高三年级高考考前得分训练考试(四)语文试卷)下列句子中标点符号的使用,没有错误的一句是( )A.中国共产党的《一号文件》详细说明了为提高农村收入而进一步采取的措施。

文件要求其他省份也取消农业税。

根据这个文件,在追加的卫生保健和教育开支中,至少70﹪要拨给农村地区。

(通常大部分给了城市)文件还呼吁增加补贴和政府加大对农业的投入。

B.我不会怀疑,哪怕是一分钟的怀疑,如果我现在还是二、三十岁、是个没有子女的单身汉,那从大学一毕业,我就会收拾行囊到中国去生活。

C.最近几周,我们看到“林肯”号航空母舰上的美国海军飞行员为营里亚齐省的海啸受灾者运去了救灾物资。

按照奈的划分方法,我们应该把这一举动归为哪一类呢?这是带人情味的硬实力?还是穿着防弹衣的软实力?不管它是什么,它受到了当地人的欢迎。

D.美国商会驻北京办事处负责人埃默里威廉斯说,对人民币升值问题:“我们还没有形成真正的观点。

2024届湖南省金太阳百校高三12月联考高效提分物理试题(基础必刷)

2024届湖南省金太阳百校高三12月联考高效提分物理试题(基础必刷)

2024届湖南省金太阳百校高三12月联考高效提分物理试题(基础必刷)一、单项选择题(本题包含8小题,每小题4分,共32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)(共8题)第(1)题下列说法中正确的是( )A.γ射线的电离本领比β射线强B.镉棒在“核反应堆”中的作用是控制反应速度C.衰变成要经过6次α衰变和8次β衰变D.原子核所含核子单独存在时的总质量小于该原子核的质量第(2)题《天问》是屈原笔下的不朽诗篇,而“天问”行星探索系列代表着中国人对深空物理研究的不懈追求。

如下图所示,半径均为R的两球形行星A、B的密度之比为,A、B各有一个近地卫星C、D,其绕行周期分别为:、。

站在行星表面的宇航员从距A行星表面高为h处以水平抛出一物体a,从距B行星表面高为2h处以水平抛出另一物体b。

下列说法正确的是( )A.C、D绕A、B运行的速度之比为B.C、D绕A、B运行的周期满足C.由于不知道a与b的质量,所以无法求出二者落地时速度之比D.a、b两物体从抛出到落地的位移之比为第(3)题如图所示,边长为L的正六边形ABCDEF的5条边上分别放置5根长度也为L的相同绝缘细棒。

每根细棒均匀带上正电。

现将电荷量为+Q的点电荷置于BC中点,此时正六边形几何中心O点的场强为零。

若移走+Q及AB边上的细棒,则O点强度大小为( )(k为静电力常量)(不考虑绝缘棒及+Q之间的相互影响)A.B.C.D.第(4)题2023年3月24日傍晚,如图所示的一轮弯月与比地球离太阳更近的金星在西南方天空上演了一场奇妙的天象——月掩金星,即月球运行至地球与金星之间,当三者排成一条直线时,月球把金星完全遮挡住。

下列说法正确的是( )A.时隔一年将再次出现“月掩金星”的天文现象B.金星公转的向心加速度大于地球公转的向心加速度C.“月掩金星”时月球、金星与地球三者的速度方向相同D.“月掩金星”时金星对月球的引力等于地球对月球的引力第(5)题疫情期间“停课不停学”,小明同学在家自主开展实验探究。

2014年12月大学英语四级考试备考资料《阅读理解》考前强化训练(第11-20篇)及答案

2014年12月大学英语四级考试备考资料《阅读理解》考前强化训练(第11-20篇)及答案

2014年12月大学英语四级考试备考资料《阅读理解》考前强化训练及答案(第11-20篇)第十一篇Social customs and ways of behaving change. Things which were considered i mpolite many years ago are now acceptable. Just a few years ago, it was cons idered impolite behaviour for a man to smoke on street. No man who thought of himself by smoking when a lady was in a room.Customs also differ from country to country. Does a man walk on the left or the right of a woman in your country? Or doesn't it matter? Should you use b oth hands when you are eating? Should leave one in your lap,or on the table? The Americans and the British not only speak the same language but also shar e a large number of social customs. For example, in both America and Englan d people shake hands when they meet each other for the first time. Also, most Englishmen will open a door for a wonman or offer their seat to a woman , and so will most Americans. Promptness is important both in England and in America. That is , if a dinner invitation is for 7 o'clock , the dinner guest ei ther arrives close to that time or calls up to explain his delay.The important thing to remember about social customs is not to do anything t hat might make other people feel uncomfortable-----especially if they are your guests. When the food was served , one of the guests strated to eat his peas with a knife . The other guests were amused or shocked , but the host calmly picked up his knife and began eating in the same way. It would have been b ad manners to make his guest feel foolish or uncomfortable.1.If one has accepted a dinner invitation ,what should he do if he is tobe late for the dinner?a.He should find an excuseb.He should adk for excuse.c.He should say sorryd.He should telephone to explain his being late.2."It would have been bad manners to make his guests feel foolish or uncomf ortable." "Bad manners " means ________.a.uglyb.dishonestc.impolited.shameful3.which of the following do you think is the best tiltle for this passage?a.Social Customs and Customsb.Social Lifec.American and British Customsd.Promptness Is Important4.According to the text, the best host_______.a.tries his best to make his guests feel comfortableb.makes his guests feel excitedc.tries to avoid being naughty to his guestsd.tries to avoid being foolish5.The author of this article may agree with which of the following?a.The guest who ate his peas with a knifeb.The other guests who were amused or shockedc.The host who picked up his knife and began eating in the same wayd.None of the above答案:dcaac第十二篇New Orleans, Louisiana, was established as part of the French Empire in 171 8.Its location on the east bank of the Mississippi River gave it control of the A merican hinerland and it became strategically important to many nations. It wa s transferred from France to Spain, returned to France,and finally sold by Nap oleon to the United States in 1803. The city was the site of a famous battle f ought in 1815 between the British, who hoped to control it , and the America ns under General And rew Jackson.The riverbed of the Mississippi is constantly silting and the river is now actual ly higher than the city. Levees hold back the river and giant pumps are used t o move water from the city into the river.Although New Orleans haas beena part of the United States for almost two ce nturies, its population takes great pride in its French heritage. Louisiana still re tains parts of the Code Napoleon which,form many years,was its only law. New Orleans is carefree city and it boasts its hot, spicy Creole seafood and it s native Dixieland Jazz. The jackson Square neighborhood maintains its French colonial homes and in other sections are pre-Civil War mansions. Visitors are surprised to find that behind this interesting facade of yesteryear, is a busy in dustrial and port city. Grain and coal come from the Midwest and foreigh carg oes are unloaded here. New Orleans is no longer a sleepy Southern town----bu t it's still fun to visit.1.What accounts for the levees and pumps in New Orleans?a.The Mississippi frequently floods the city.b.The riverbed has raised inthe past 200 years.c.The torrential rains flood the city frequently.d.The high humidity cannot otherwise be comtrolled.2.The battle of New Orleans was fought by jackson against______.a.Franceb.Britainc.Spaind.The North3.The Code Napoleon was _______.a.an agreement to sell Louisianab.a body of lawsc.a city pland.a military code for the army4.Which of the following elements does not apply to the attiude of the inhabit ants of New Orleans?a.Pride in their French heritage.b.A desire to retain picturesque colonial buildings.c.A refusal to engage in trade and commerced.A praising of Dixieland Jazz.5.Tourists visiting New Orleans are surprised to encounter_____.a.Creole foodb.Dixieland jazzc.bustling cityd.authentic colonial homes答案:bbbcc第十三篇The United States is on the verge of losing its leading place in the world's te chnology. So says more than one study in recent years. One of the reasons for this decline is the parallel decline in the number of U.S. scientists and engine ers.Since 1976,employment of scientists and engineers is up 85 percent. This trend is expected to continue. However, the trend shows that the number of 22-year -olds--the near term source of future PH.D.s-is declining. Further adding to the problem is the increased competition for these candidates from other fields-law,medicine,business,etc. While the number of U.S. PH.D.s in science and engin eering declines,the award of PH.D.s to foreign nationals is increasing rapidly. Our inability to motivate students to pursue science and engineering careers at the graduate level is compounded because of the intense demand industry has f or bright Bachelor's and Master's degree holders. Too often, promising PH.D.ca ndidates, confronting the cost and financial sacrifice of pursuing their education, find the attraction of industry irresistible.1.The U.S.will come to lose its leading place in technology probably because ________.a. the number of PH.D. degree holders is decliningb. the number of scientists and engineers is decreasingc. the number of 22-year-ilds is decliningd. scientists and engineers are not employed2.The field of science and engineering is facing a competition from ________ .a. technologyb. foreign nationalsc. such fields as law, medicine and businessd. postgraduatesrge-scale enterprises now need _______.a. bright graduates and postgraduatesb. new inventionsc. advanced technologyd. engineers4.Many promising postgraduates are unwilling to pursue a PH.D. degree because _________.a. they are not encouraged to be engaged in scienceb. industry does not require PH.D. holdersc. they have financial difficultiesd. they will spend much time and energy completing PH.D.5.PH.D. candidates "find the attraction of industry irresistible" means that ____ _____.a. they find industry is attracting more and more college studentsb. they don't think they can prevent themselves from working for industryc. they cannot resist any attraction from all sidesd. they cannot work for industry any longer答案:bcadb第十四篇Newdays,a standard for measuring power has changed.These changes foretell a new standard for measuring power.No longer will a nation's political influence be based solely on the strength of its military forces. Of course, military effect iveness will remain a primary primary measure of power.But political influence is also closely tied to industrial competitiveness. It's often said that without it s military the Soviet Union would really be a third-world nation. The new sta ndard of opwer and influence that is evolving now places more emphasis on t he ability of a country to compete effectively in the economic markets of the world.America must recognize this new course of events. Our success in shaping wo rld events over the past 40 years has been the direct result of our ability to a dapt technology and to take advantage of the capabilities of our people for the purpose of maintaining peace. Our industrial prowess over most of this period was unchallenged. It is ironic that it is just this prowess that has enabled oth er countries to prosper and in turn to threaten our industrial leadership.The competitiveness of America's industrial base is an issue bigger than the D epartment of Defense and is going to require the efforts of the major institutio nal forces in our society-government,industry,and education. That is not to say that the Defense Department will not be a strong force in the process because we will. But we simply cannot be, nor should we be, looked upon by others as the savior of American industry.1. Now a nation's political influence depends on _________.a. the strength of its military forcesb. its ability to compete in industryc. economic marketsd. both a and b2. The Soviet Union was not listed as a third-world nation just because of __ _______.a. its powerful military forcesb. its vast landc. its industrial competitivenessd. its contributions to world peace3. The author indicates that ______ is threatening American political power.a. other countriesb. the declining U.S. industrial basec. a new standard for measuring powerd. less advanced technology4. America succeeded in shaping world events over past 40 years probably bec ause of ___________.a. its ability to adapt technologyb. its ability to take advantage of the capabilities of its peoplec. its ability to compete in the world marketsd. both a and b5. The purpose of writing this article is __________.a. to draw the readers' attention to a new standard for measuring powerb. to demonstrate American political influence in the worldc. to emphasize that efforts must be made to strengthen the declining U.S. ind ustrial based. to show American industrial prowess答案:dabdc第十五篇Trees should only be pruned when there is a good and clear reason for doing so and , fortunately,the number of such reasons is small. Pruning involves the cutting away of obergrown and unwanted branches, and the inexperienced gard ener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or si ze. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance o r give it a special shape. Secondly, pruning may be done to make the tree hea lthier. You may cut diseaed or dead wood, or branches that are rubbing agains t each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the fr ee movement of air.One result of pruning is that an open wound is left on the tree and this provi des an easy entry for disease, but itis a wound that will heal. Often there is a race between the healing and the desease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healin g will be slowed down by roughness. You should allow the cut surface to dry for a few hurs and then paint it with one of the substances available from ga rden shops produced especially for this purpose. Pruning is usually without inte rference from the leaves and also it is very unlikely that the cuts yu make wil l bleed. If this does happen,it is, of course,impossible to paint them properly.1.Pruning should be done to ______.a.make the tree grow tallerb.improve the shape of the treec.get rid of the small branchesd.make the small branches thicker2.Trees become unhealthy if the gardener ______.a.allows too many branches to grow in the middleb.does not protect them from windc.forces them to grow too quicklyd.damages some of the small side branches3.Why is a special substance painted on the tree?a.To make a wound smoothb.To prevent disease entering a woundc.To cover a rough surfaced.To help a wound to dry4.A good gardener prunes a tree______.a.at intervals throughout the yearb.as quickly as possiblec.occasionally when necessaryd.regular every winter5.What was the author's purpose when writing this passage?a.To give pratical instruction for pruning a tree.b.To give a general description of pruningc.To explain how trees develop diseasesd.To discuss different methods of pruning.答案:babca第十六篇On Thursday afternoon Mrs. Carke, dressed for going out, took her handbag w ith her money and her key in it, pulled the door behind her to lock it and we nt to the over 60s Club. She always went there on Thursdays. It was a nice o uting for an old woman who lived alone.At six o'clock she cane home, let herself in and at once smelt cigarette smoke. Cigarette smoke in her house? How? How? Had someone got in? She checked the back door and the windows. All were locked or fastened, as usual. There was no sign of forced entry.Over a cup of tea she wondered whether someone might have a key that fitte d her front door-"a master key"perhaps. So she stayed at home the following Thursday. Nothing happened. Was anyone watching her movements? On the Th ursday after that she went out at her usual time,dressed as usual, but she didn' t go to the club. Instead she took a short cut home again, letting herself in th rough her garden and the back door. She settled down to wait.It was just after four o'clock when the front door bell rang.Mrs. Clarke was m aking a cup of tea at the time. The bell rang again, and then she heard her le tter-box being pushed open. With the kettle of boiling water in her hand, she moved quietly towards the front door. A long piece of wire appeared through the letter-box, and then a hand. The wire turned and caught around the knob on the door-lock. Mrs. Clarke raised the kettle and poured the water over the hand. There was a shout outside, and the skin seemed to drop off the fingers like a glove. The wire fell to the floor, the hand was pulled back, and Mrs. C larke heard the sound of running feet.1.Mrs. Clarke looded forward to Thursday because_______.a.she worked at a club on the dayb.she said visitors on Thursdaysc.she visited a club on Thursdayd.a special visitor came on Thursday2.If someone had made a forced entery,_______.a.Mrs.Clarke would have found a broken door or windowb.he or she was still in the housec.things would have been thown aboutd.he or she would have needed a master key3.On the third Thursday Mrs. Clarke went out_______.a.because she didn't want to miss the club againb.to see if the thief was hnging about outsidec.to the club but then changed her mindd.in an attempt to trick the thief4.The lock on the front door was one which_______.a.needed a piece of wire to open itb.could he opened from inside without a keyc.could't be opened without a keyed a knob instead of a key5.The wire feel to the floor_______.a.because Mrs.Clarke refused to open the doorb.when the man's glove dropped offc.because it was too hot to holdd.because the man justwanted to get away答案:cadbd第十七篇Many people believe the glare from snow causes snowblindnenss. Yet, dark gla sses or not , they find themselves suffering from headaches and watering eyes, and even snowblindness,when exposed to several hours of "snow light" .The United States Army has now determined that glare from snow does not ca use snowblindness in troops in a snow-covered country.Rather, a man's eyes fr equently find nothing to foucs on in a broad expanse of barren snow-covered t errain. So his gaze continually shifts and jumps back and forth over the entire landscape in search of tsomething to look at. Finding nothing, hour after hour, the eyes never sotp searching and the eyeballs become sore and the eye musc les ache. Nature offsets this irritation by producing more and fluid which cove rs the eyeball. The fluid coversthe eyeball in increasing quantity until vision blurs, then is obsured,and the result is total, even though temporary,snowblindnes s.Experiments led the Army to a simple method of overcoming this problem. Sc outs ahead of a main body of troops are trained to shake snow from evergree n bushes, creating a dotted line as they cross completely snow-covered landsca pe,Even the scouts themselves throw lightweight , dark colored objects ahead o n which they too can focus . The men following can then see something.Their gaze is arrested. Their eyes focus on a bush and having found something to see,stop scouring the snow-blanketed lanscape. By focusing their attention on o ne object at a time,the men can cross the snow without becoming hopelessly s nowblind or lost. In this way the problem of crossing a solid white terrain is overcome.1.To prevent headaches, watering eyes and blindness caused by the glare from snow, dark glasses are_____.a.indispensibleefulc.ineffectived.available2.When the eyes are sore tears are produced to ________.a.clear the visionb.remedy snowblindnessc.ease the irritationd.loosen the muscles3.Snowblindness may be avoided by_______.a.concentrating to the solid white terrainb.searching for something to look at in snow-covered terrainc.providing the eyes with something to foucs ond.covering the eyeballs with fluid4.The scouts shake snow from evergreen bushes in order to _______.a.bive the men behind something to seeb.beautify the landscapec.warm themselves in the coldd.prevent the men behind from losing their way5.A suitable title for this passage would be _______.a.snowblindness and how to overcome itb.natrue's cure for snowblindnessc.soldiers in the snowd.snow vision答案:CCCAA第十八篇Water problems in the future will become nore intense and more complex. Our increasing population will tremendously increase urban wastes,primarily sewage. On the other hand, increasing demands for water will decease substantialy the amount of water available for diluting wastes. Rapidly expanding industries w hich involve more and more complex chemical processes will produce large vo lumes of liquid wastes, and many of these will contain chemicals which are n oxious. To feed our rapidly expanding population, agriculture will have to be i ntensified. This will involve ever-increasingquantities of agricultural chemicals, From this , it is apparent that drastic steps must be taken immediately to deve lop corrective measures for the pollution problem.There are two ways by which this pollution problem can be dwindled. The fir st relates to the treatment of wastes to decrease their pollution hazard. This in volves the processing of solid wastes "prior to " disposal and the treatment ofliquid wastes, or efflunets,to permit the reuse of the water or minimize polluti on upon final disposal.A second approach is to develop an economic use for all or a part of the was tes. Farm manure is spread in fields as a nutrient or organic supplement . Effl uents from sewage disposal plants are used in some areas both for irrigation a nd for the nutrients contained. Efflunets from other processing plants may also be used as a supplemental source of water. Many industries, such as meat an d poultry processing plants, are currently converting former waste products into marketable byproducts. Other industries are potential eonomic uses for waste products.1.The purpose of this passage is ______.a.to alert the reader to the dwindling water supplyb.to explain industrial uses of waterc.to acquaint the reader with water pollution problemsd.to demostrate various measures to solve the pollution problem2.Which of the following points is NOT INCLUDED in the passage?a.In dustrial development incudes the simplification of complex chemical proces ses.b.Diluting wastes needs certain amount of waterc.Demands for water will go up along with the expanding populationd.Intensive cultivation of land requires more and more chemicals3.The reader can conclued that________.a.countries of the world will work together on polution problemsb.byproducts from wastes lead to a more prosperous marketplacec.science is making great progress on increasing water suppliesd.some industries are now ,aking economic use of wastes4.The author gives substance to the passage through the use of _______.a.interviews with authorities in the field of water controlsb.opinions and personal observationsc.definitions which clarify important termsd.strong arguments and persuasions5.The words "prior to "(para.2) probably mean______.a.afterb.duringc.befored.beyond答案:cadbc第十九篇One of the qualities that most people admire in others is the willingness to ad mit one's mistakes. It is extremely hard sometimes to say a simple thing like "I was wrong about that," and it is even harder to say, "I was wrong , and y ou were right about that."I had an experience recently with someone admitting to me that he had madea mistake fifteen years ago. He told me he had been the manager of a certain grocery store in the neighbourhood where I grew up, and he asked me if I r emembered the egg cartons. Then he related an incident and Ibegan to rememb er vaguely the incident he was describing.I was about eight years old at the time, and I had gome into the store with may mother to do the weekly grocery shopping. On that particular day, I must have found my way to the dairy food department where the incident tood pla ce.There must have been a special sale on eggs that day because there was an i mpressive display of eggs indozen and half-dozen cartons. The cartons were st acked three or four feet high. I must have stopped in front of a display to ad mire the stacks. Just then a woman came by pushing her grocery cart and kno cked off the stacks of cartons. For some reason, I decided it was up to me to put the display back together, so I want to work.The manager heard the moise and came rushing over to see what had happene d. When he appeared, I was on my knees inspecting some of the cartons to s ee if any of the eggs were broken, but to him it looked as though I was the culprit. He severely reprimanded me and wanted me to pay for any broken eg gs. I protested my innocence and tried to explain, but it did no good. Even th ough I quickly forgot all about the incident, apparently the manager did not.1.How old was the author when he wrote this article?a.about 8b.about 18c.about 23d.about 152.Who was to blame for knocking off the stacks of cartons?a.The authorb.The managerc.A womand.The author's mother3.Which of the following statements is not true?a.The woman who knocked off the stacks of cartons was seriously criticized b y the manangerb.The author was severely critizized by the manager.c.A woman carelessly knocked off the stacks of cartonsd.It was the author who put the display back together4.Which of the following can serve as the best title for the passage?a.Its Harder to Admit One's Mistakeb.I was once the culpritc.I remember an incidentd.A case of mistaken identity5.The tone of the article expresses the author's_______.a.admiration for the manager's willingness to admit mistakesb.anger to the manager for his wrong accusationc.indignation against the woman who knocked off the stacks of cartonsd.reget for the mistake the made in the store答案:ccada第二十篇Flying over a desert area in an airplane, two scientists looked down with train ed eyes at trees and bushes. After an hour's flight one of the scientists wrote i n his book, 'Look here for probable metal' Scientists in another airplane, flying over a mountain region,sent a message to other scientists on the ground,'Gold possible.' Walking across hilly ground, four scientists reported,'This ground sh ould be searched for metals.' From an airplane over a hilly wasteland a scienti st sent back by radio one word,'Uranium'.None of the scientists had X-ray eyes: they had no magic powers for looking down below the earth's surface. They were merely putting to use one of the n ewest methods of location minerals in the ground---using trees and plants as si gns that certain minerals may lie beneath the ground on which the trees and p lants are growing.This newest method of searching for minerals is based on the fact that mineral s deep in the earth may affect the kind of bushes and trees that grow on the surface.At Watson Bar Creek, a brook six thousand feet high in the mountains of Brit ish Columbia, Canada,a mineral search group gathered bags of tree seeds. Box ed were filled with small banches from te trees. Roots were dug and put into boxes. Each bag and box was carefully marked. In a scientific laboratory the p arts of the forest trees were burned to ashes and tested .Each small part was e xamined to learn whether there were minerals in it.Study of the roots , branches,and seeds showed no silver. But there were smal l amounts of gold in the roots and a little less gold in the branches and seeds. The seeds growing nearest to the tree trunk had more gold than those growin g on the ends of the branches.If the trees had not indicated that there was gold in the ground, the scientists would not have spent money to pay for digging into the deeper. They did dig and found more fold below. They dug deeper. They found large quantities of gold.1.Scientists were flying over a desert or hilly wasteland or a mountain region i n order to search for _____ in the ground.a.goldb.silverc.metalsd.minerals2.The study of trees,branches and roots indicates that_______.a.there were larger amounts of gold in the branches than in the seeds.b.there were small amounts of gold in the roots than in the branchesc.there were larger amounts of gold in the seeds growing nearest to the tree tr unk than seeds growing on the ends of branches.d.there were more gold in the branches than in the roots3.Which is the best title ?a.Scientists searching for metals with sepcial powerb.New methods of searching for mineralsc.Gold could be found by trees and plantsd.A new method of searching for minerals---using trees and plants4.Which of the following is not mentioned as part of a tree that can help find minerals?a.leavesb.rootsc.branchesd.seeds5.The scientists were searching for minerals by using ______.a.X-rayb.magic powerc.a special instrumentd.trained eyes答案:dcdad。

高考考前数学小题强化训练十二

高考考前数学小题强化训练十二

高考考前数学小题强化训练十二时量:45分钟 满分:70分一、选择题(本大题共10个小题,每小题5分,共50分,每小题给出的选项中,只有一项符合题目要求的)1.在100张奖券中,有4张中奖,从中任取2张.则2张都中奖的概率是( C ) A .501 B .251 C .8251D .495012.一函数图象沿向量a)2,3(π=平移后,得到函数y = 2cos x + 1的图象,则原函数在[0,π]上的最大值为( C ) A .2B .1C .0D .33.若方程2a ·9sin x + 4a ·3sin x +a – 8 = 0有实数解,则实数a 的取值范围为( D ) A .(–∞,–8]∪[0,+∞) B .[0,+∞) C .]318,0(D .]2372,318[4.已知a >0且a ≠1,f (x ) = x 2 – a x ,当x ∈(–1, 1)时均有f (x )<21,则实数a 的取值范围是( C )A .]21,0(∪[2,+∞) B .[≠, 1)∪(1, 4] C .)1,21[∪(1, 2]D .]41,0(∪[4, +∞)5.等边△ABC 的边长为a ,将它沿平行于BC 的线段PQ 折起,使平面APQ ⊥平面BPQC ,若折叠后AB 的长为d ,则d 的最小值是( D ) A .a43 B .a 45C .43aD .a4106.设点P 为函数y = ln (2x – 1)图象上任意一点,点P 到直线2x – y + 3 = 0的距离为d ,则d 的最小值是( A ) A .5B .52C .53D . 57.已知集合A = {(x , y ) | x – y + m ≥0},集合B = {(x , y ) | x 2 + y 2≤1},全集n = {(x , y )| x ∈R ,y ∈R},若A ∩( U B ) = A ,则实数m 的取值范围是( C ) A .(–∞,]2 B .2(, +∞) C .(–∞,]2-D .2(-, +∞)8.若直线ax + by + 1 = 0 (a , b >0)过圆x 2 + y 2 + 8x + 2y + 1 = 0的圆心,则ba 41+的最小值为( C )A .8B .12C .16D . 209.已知正方形的棱长为4,在正方体内放八个半径均为1的球,再在这八个球中间放一个最大的球,则这个球的半径为( D ) A .1 B .2 C .21D .13-10.已知四边形ABCD 的对角线AC 与BD 相交于点O ,若S △AOB = 9,S △COD = 16,则四边形ABCD 面积的最小值为( ) A .50 B .7 C .49D . 144二、填空题(本大题共5个小题,每小题4分,共20分,将最后结果填在题中的横线上) 11.已知a = (cos α, sin α),b = (cos β, sin β),a和b 之间有关系式|k a + b | =3|a – k b |,其中k >0,则a ·b 的最小值等于21.12.某赛区“超级女声”前5名中有2人会跳舞,现从中任选2人,则选出的2人中至少有1人能歌善舞的概率为107.13.已知函数f (x ) = (x – 1) (x – 2) (x – 3) (x – 4)则f ′(0)的值为 24 . 14.设点P 是椭圆14922=+yx上一动点,F 1、F 2是椭圆的两个焦点,则cos ∠F 1PF 2的最小值是91-.15.已知数列{a n }满足a 1 = 1,a n = a 1 +323121a a ++…+111--n a n (n >1,n ∈N +),若a n= 2006,则n = 4012 .。

2023届广东省广州市高三上学期12月调研测试物理试题(基础必刷)

2023届广东省广州市高三上学期12月调研测试物理试题(基础必刷)

2023届广东省广州市高三上学期12月调研测试物理试题(基础必刷)一、单项选择题(本题包含8小题,每小题4分,共32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)(共8题)第(1)题2024年4月20日,碳14靶件从秦山核电重水堆机组中成功抽出,这是中国首次利用核电商用堆批量生产碳14同位素,中国也从此彻底破解了国内碳14同位素依赖进口的难题,实现碳14供应全面国产化。

重水堆生产碳14的主要核反应方程为,下列说法中正确的是( )A.是质子B.是电子C.该反应质量守恒D.该反应是核聚变反应第(2)题在秋天,一天的气温变化很大,一个空教室内,早上温度为17 ℃时,气体质量为,下午温度为27 ℃时,气体质量为,假定教室内的气体压强保持不变,气体可以看成理想气体,则等于()A.17:27B.29:30C.27:17D.30:29第(3)题2023年7月10日,经国际天文学联合会小行星命名委员会批准,中国科学院紫金山天文台发现的、国际编号为381323号的小行星被命名为“樊锦诗星”。

如图所示,“樊锦诗星”绕日运行的椭圆轨道面与地球圆轨道面间的夹角为20.11度,轨道半长轴为3.18天文单位(日地间距离为1天文单位)。

若只考虑太阳对行星的引力,则“樊锦诗星”绕太阳一圈大约需要( )A.3.7年B.5.7年C.7.7年D.9.7年第(4)题如图所示,该装置是某医院内给病人输液的部分装置示意图,乙瓶内液体不断通过Q管输入病人体内,刚开始输液时,甲、乙两瓶内药液量相等,液面相平.过了一会儿,观察两个输液瓶时会发现(此时两个输液瓶内还有大量的溶液)( )A.甲瓶中的液面高B.乙瓶中的液面高C.甲、乙两瓶中的液面一样高D.以上三种情况均有可能第(5)题为吸引更多消费者,商场会在中庭悬挂很多节日装饰物,如图所示,轻绳AB一端系有重为G的装饰物,另一端A可在竖直面内旋转,轻绳BC一端系在B点,另一端通过固定在天花板上的定滑轮上的C点,由工人拉住静止不动。

高考数学12月月考考前强化与演练十理 试题

高考数学12月月考考前强化与演练十理 试题

2021高考理科数学12月月考 考前强化与演练〔十〕一、选择题〔本大题一一共10小题,每一小题5分,一共50分,每一小题给出的四个选项里面,只有一项是哪一项符合题目要求的,请将正确答案的代号填在答卷的相应表格内〕 12345,U ={,,,,}集合14135M N =={,},{,,},那么U N M ⋂()=〔 〕 A 、{1,3}B 、{1,5}C 、{3,5}D 、{4,5}S 不可用[()()]b a S f x g x dx =⎰-求出的是〔 〕3.O 为平面内的动点,A ,B ,C 是平面内不一共线的三点,满足0,OA OB OC λ+=≠那么O 点轨迹必过ABC ∆的〔 〕A 、垂心B 、外心C 、重心D 、内心 ,x y 是两个实数,命题",x y 中至少有一个数大于1”成立的充分不必要条件是〔 〕A 、2x y +=B 、2x y +>C 、222x y +>D 、1xy >5.以下函数既是奇函数,又在区间[1,1]-上单调递减的是〔 〕A 、()sin f x x =B 、()|1|f x x =-+C 、2()ln2xf x x-=+D 、1()()2x x f x a a -=+2()(),f x g x x =+曲线y ()g x =在点(1,(1))g 处的切线方程为21,y x =+那么曲线()y f x =在点(1,(1))f 处切线的斜率为〔 〕A 、4B 、14-C 、2D 、12-{}n a 中,前n 项的和为,n S 假设81126,a a =+那么9S =〔 〕A 、54B 、45C 、36D 、278.,,A B C 是锐角ABC ∆的三个内角,向量(sin ,1),(1,cos ),p A q B =-=那么p 与q 的夹角是〔 〕A 、锐角B 、钝角C 、直角D 、不确定9.P 为角α的终边上一点,且33sin sin cos sin()2142ππαβαπββα⎛⎫-++=<<< ⎪⎝⎭,那么角β等于〔 〕A 、12πB 、6πC 、4πD 、3π 2()25f x x ax =-+在(],2-∞上是减函数,且对任意的12,[1,1],x x a ∈+总有12|()()|4,f x f x -≤那么实数a 的取值范围为〔 〕A 、[1,4]B 、[2,3]C 、[2,5]D 、[)3,+∞二、填空题〔本大题一一共5小题,每一小题5分,一共25分,请将正确答案填写上在横线上〕11.63)21)(1(x x -+展开式中5x 项的系数为 。

高考考前数学小题强化训练四

高考考前数学小题强化训练四

高考考前数学小题强化训练四时量:45分钟 满分:70分一、选择题(本大题共10个小题,每小题5分,共50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.设|a n |是递增等差数列,前三项的和为12,前三项的积为48,则它的首项是( B ) A .1 B .2 C .4D .6【解析】等差数列的前3项和为12, 则第2项是4,设公差为d >0,由条件可得(4 – d )×4×(4 + d ) = 48,得d = 2. 所以首项为2,选B. 2.若0<α<β<4π,sin α+ cos α= a ,sin β+cos β=b ,则( A ) A .a <b B .a >b C .ab <1D .ab >2【解析】a 2 = (sin α+cos α)2 = 1 + sin2α, b 2 = (sin β+cos β)2 = 1 + sin2β. 0<α<β<4π,令α=6,12πβπ=,得a 2 = 1 +2321=,b 2 = 1 +.23223+=所以a 2<b 2,又a >0,b >0, 故a <b .选A.3.已知函数f (x ) = 2x 的反函数f –1 (x ),若f –1 (a )+ f –1 (b ) = 4,则ba 11+的最小值为( B ) A .1B .21C .31D .41【解析】因为f (x ) = 2n ,所以其反函数为f – 1 (x ) = log 2 ab ,则f – 1(a ) + f – 1(b ) = 4,得log 2 a +log 2b = log 2 ab = 4,解得ab = 16..21161621621611==≥+=+=+ab b a abb a b a 故选B.4.设A (– 1,2)、B (2, – 2)、C (0,3),M (a ,b )(a ≠0)是线段AB 上的一点,则直线MC 的斜率k 的取值范围是( D ) A .[1,25-] B .[25,1-]C .[1,0()0,25⋃-]D .),1[]25,(+∞⋃--∞【解析】画出图形知k ≥k AC = 1,或k ≤k BC =25-∴k ∈(–∞,]25-∪[1,+∞),故选D.5.设)1,0(),21,1(==ON OM,则满足条件0≤OMOP ,≤1,0≤ON OP ⋅≤1的动点P 的变动范围(图中 阴影部分,含边界)是( A )【解析】设点P (x ,y ),则0≤(x ,y )·(1,21)≤l ,0≤(x ,y )·(0,1)≤1,即0≤x +21y ≤1,0≤y≤1. 因此动点P 的变化范围是A 中的阴影部分.故选A .6.若正三棱锥P 一ABC 的三条侧棱两两互相垂直,则该正三棱锥的内切球与外接球的半径之比为( D )A .1:3B .1:(3 +3)C .(3+ 1):3D .(3– 1 ):3【解析】设正三棱锥侧棱长为a ,则底面边长为a 2,把正三棱锥补成正方体,它们的外接球相同,其半径为aR 23=,由体积法求得内切球半径为.313,633-=-=Rr a r故选D .7.若m 、n 是不大于6的非负整数,则2626y C x C n m += 1表示不同的椭圆个数为( C ) A .27A B .26C C .24A D .24C【解析】m 、n 分别可以取0,1,2,3,4,5,6,又因为462656166606,,C C C C C C ===,所以m C 6取值只有4个不同的值,故m C 6与n C 6的不同取值种数为24A ,从而选C.8.男女生共8人,从男生中选2人,女生中选1人,共有30种不同的选法,其中女生人数是( D ) A .2人 B .3人 C .4人D .2人或3人【解析】设有n 个女生,则281n nC C -= 30, ∴n (8 – n ) (7 – n ) = 60,将2,3,4分别代入上式验算得D 正确. 9.若a >b >1,P =21,lg lg =⋅Q b a (lg a + lg b ),R =2lgb a +,则( B )A .R <P <QB .P <Q <RC .Q <P <RD .P <R <Q【解析】取a = 100,b = 10,则P =2,Q = 1.5,R =Q>-=>2lg 22110lg2110lg. 故选B.10.已知集合}2|{a x x M ≤≤-=,},32|{M x x y y P ∈+==,},|{2M x x z z T ∈==且P T ⊆,则实数a的取值范围是( A )A.321≤≤aB.32≤<-aC.32≤≤aD.221≤≤a【解析】因为}2|{a x x M ≤≤-=,}321|{+≤≤-=a y y P当}4|{022≤≤=⇒≤≤-z a z T a ,要使 P T ⊆,则21432≥⇒≥+a a (舍去);当}40|{20≤≤=⇒<<z z T a ,要使 P T ⊆,则21432≥⇒≥+a a ,所以221<≤a ;当}0|{22a z z T a ≤≤=⇒≥,要使 P T ⊆,则31322≤≤-⇒≥+a a a ,所以32<≤a ;综合得:.321≤≤a二、填空题:(本大题共5小题,每小题4分,共20分,把答案填在题中横线上)11.已知}32|),{(22=+=y x y x M ,N = {(x , y ) |y = mx + b }.若对于所有∈m R ,均有∅≠N M ,则b 的取值范围是]26,26[-.【解析】≠N M ∅相当于点(0,b)在椭圆132322=+y x上或它的内部,1322≤∴b.2626≤≤-∴b12.已知函数f (x ) =122+-xa 是R 上的奇函数,则f– 1(53) =2 .【解析】f (–x ) = – f (x ),即122+-xa =122++-xa ,∴a = 1;∵531221=+-x,∴12252+=x,∴x =2,即f– 1(53) = 2.13.设x , y满足⎪⎩⎪⎨⎧≥+≥+-≤006,3y x y x x ,则该不等式组表示的平面区域的面积为36 . 【解析】如图,S =)]3(9[21--×[3 – (–3)] =36. 14.nxx )22(3-的展开式中,前三项系数的绝对值依次组成一个等差数列,则展开式中第五项的二项式系数为70 (用数字作答).【解析】前三项系数的绝对值依次为:1,211n C ,)21(2-n C 2,∴2×2141121nn C C +=,即n =1+8)1(-n n ,∴n = 1(舍去)或n = 8,则第五项的二项系系数为48C = 70.15.过双曲线1by ax 2222=-的右焦点F(c ,0)的直线交双曲线于M 、N 两点,交y 轴于P 点,则有NFMF+的定值为22b a2.类比双曲线这一结论,在椭圆1b y ax 2222=+(a >b >0)中,NFMF+是定值22ba 2-.【解析】用特值法去研究.。

2024年新高考高三12月联考物理试卷考前冲刺版

2024年新高考高三12月联考物理试卷考前冲刺版

一、单选题二、多选题1. 如图所示,将两根劲度系数均为k 、原长均为L 的轻弹簧,一端固定在水平天花板上相距2L 的两点,另一端共同连接一质量为m 的物体,平衡时弹簧与竖直方向的夹角为37°。

若将物体的质量变为M ,平衡时弹簧与竖直方向的夹角为53°,sin37°=0.6,则 等于()A.B.C.D.2. 一个定值电阻,两端电压为2V ,通过的电流是0.5A ,如果两端的电压是6V ,通过的电流是( )A .0.5AB .1AC .1.5AD .2A3.下列说法正确的是( )A .某黑体在不同温度下的辐射强度与波长的关系如图甲所示,则温度T 1<T 2B .同一光电管的光电流与电压之间的关系曲线如图乙所示,则入射光的频率关系为ν甲=ν乙>ν丙C .图丙为康普顿效应的示意图,科学家通过X 射线的衍射来获得晶体的结构图像,已知普朗克常量为h ,真空的光速为c ,若X 射线在真空中的波长为λ,其对应的光子能量,该光子与电子碰撞后其波长将变大D .在两种固体薄片上涂上蜡,用烧热的针接触固体背面上一点,蜡熔化的范围如图丁所示,则a 一定是非晶体,b 一定是晶体4. 如图所示,直线A 、B 分别为电源a 、b 的路端电压与流过电源电流的关系图像。

若将一定值电阻R 0分别接到a 、b 两电源上,通过R 0的电流分别为I a 和I b,则( )A .I a >I bB .I a <I bC .I a =I bD .以上情况都有可能5. 如图为远距离输电示意图,发电机的输出电压U 1和输电线的电阻、理想变压器匝数均不变,且n 1:n 2=n 4:n 3.当用户消耗的功率增大时,下列表述正确的是A .用户的电压U 4增加B .恒有U 1:U 2=U 4:U 3C .输电线上损耗的功率减小D .发电机的输出功率不变2024年新高考高三12月联考物理试卷考前冲刺版三、实验题6. 一列简谐横波某时刻的波形如图所示,则关于质点A的受力,下列说法正确的是( )A .如果波向右传播,则质点A 受到向上的作用力B .如果波向右传播,则质点A 受到向下的作用力C .如果波向左传播,则质点A 受到向上的作用力D .如果波向左传播,则质点A 受到向下的作用力7. 一台小型发电机与计算机相连接,计算机能将发电机产生的电动势随时间变化的图象记录下来,如图甲所示,让线圈在匀强磁场中以不同的转速匀速转动,计算机记录了两次不同转速所产生正弦交流电的图象如图乙所示。

高考数学12月月考考前强化与演练九理 试题

高考数学12月月考考前强化与演练九理 试题

卜人入州八九几市潮王学校2021高考理科数学12月月考考前强化与演练〔九〕一、选择题〔本大题一一共12小题,每一小题5分,一共60分,每一小题给出的四个选项里面,只有一项为哪一项哪一项符合题目要求的,请将正确答案的代号填在答卷的相应表格内〕 1.假设集合{|21},{|02},M x x N x x =-<<=<<那么集合MN =A .{|11}x x -<<B .{|21}x x -<<C .{|22}x x -<<D .{|01}x x << 2.函数()34xf x x =+的零点所在的一个区间是 A .〔-2,-1〕B .〔-1,0〕C .〔0,1〕D .〔1,2〕 3.在锐角△ABC 中,“π3A =〞是“3sin A =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 4.0,0a b >>,且231a b +=,那么23a b+的最小值为 A .24B .25 C .26D .27 512sin(π4)cos(π4)-++A .sin4cos4-B .cos4sin4-C .sin4cos4--D .sin4cos4+6.函数()y f x =是定义在R 上的偶函数,当0x <时,()y f x =是减函数,假设12||||x x <,那么 A .12()()0f x f x -<B .12()()0f x f x -> C .12()()0f x f x +<D .12()()0f x f x +>7.设m n >,函数2()()y x m n x =--的图象可能是8.31log 2,,ln 22a b c ===,那么 A .a b c <<B .b c a <<C .c a b <<D .b a c << 9.函数π2sin(ω)(ω0,||)2y x φφ=+><的局部图象如图,那么 A .πω2,6φ==B .πω2,6φ==- C .3πω,28φ==D .3πω,28φ==-10.设,x y 满足360203x y x y x y --≤⎧⎪-+≥⎨⎪+≥⎩,假设目的函数(0)z ax y a =+>的最大值为14,那么a =A .1B .2C .23D .53911.等比数列{}n a 中,各项都是正数,且21312,,32a a a=A .427B .2C .36D .12 12.用max{,}a b 表示,a b 中的最大值.22()()5,()(3)5f x x t g x x =-++=--+,假设函数()max{(),()}h x f x g x =的图象关于直线12x =对称,那么t 的值是 A .-2B .-1 C .1D .2二、填空题〔本大题一一共4小题,每一小题4分,一共16分,请将正确答案填写上在横线上〕 13.2(42)x dx -=⎰;14.假设不等式||1x a -<成立的充分不必要条件是1322x <<,那么实数a 取值范围是。

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考前强化小题训练1.下列加点字的读音全都正确的一组是()A.跻.(jī)身敷.(fū)衍媲.(pì)美饿殍.(piǎo)遍野B.娉.(pīng)婷寒碜.(chen)谙.(ān)熟提纲挈.(xié)领C.震慑.(shè)服膺.(yīng)鞭挞.(tà)踽踽.(yǔ)独行D.炫.(xuàn)耀逮.(dǎi)捕缜.(zhěn)密栉.(zhì)风沐雨2.下列各组词语中,没有错别字的一组是()A.斡旋疏浚循私枉法望风披靡 B.脉搏赋予不揣冒昧进退维谷C.焦燥就绪哗众取宠青春永驻 D.怠慢蛰伏察颜观色沽名钓誉3.下列各句中加点的成语,使用正确的一项是()A.有的人真心地宣传科学启蒙民众,也有的人利用科学以售其奸,一时间,令人真假难辨,莫衷一是....。

B.我们公司的灯光设计师,在室内灯光设计大赛中拿过一等奖,他的设计一定会让您的新居蓬筚生辉....。

C.工作缺乏通盘考虑,目无全牛....,顾此失彼,这是许多人干不好工作的重要原因。

D.林林自卫失手致人死命,的确有罪,但罪不当死;判林林死刑,量刑过重,罚不当...罪,同样有损法律的公正。

4.下列各句中意思明确,没有语病的一句是()A.每一个时代的先进文化,总是在推动历史进步中展示了巨大力量。

先秦诸子的学说,至今仍有借鉴意义;一篇《共产党宣言》,开辟了人类思想史的新纪元。

B.世界水文专家协会主席来歇尔曾披露:全世界至少有五万人每天死于由水污染引起的各种疾病。

C.商务部近日颁布了《酒类流通管理办法》,该办法要求酒类经营者不得向未成年人和在校中小学生出售酒类商品。

D.宋代以来,欧阳修的《醉翁亭记》、苏轼的《石钟山记》、刘基的《卖柑者言》等作品有积极的思想倾向,因而文笔清新,耐人寻味。

5.下列横线上的语句顺序已打乱,请重新排列,正确的一项是()宋朝画家张择端的《清明上河图》是我们熟悉的画。

[1]画家利用树木、船只、房屋,特别是那无尽的瓦垄的一些共同特征,重复排列,以取得几条街道(亦即画面)的统一性。

[2]它的手卷的形式赋予它以空间、时间都很长的“持续性”。

[3]当然,在重复之中同时还闪烁着无穷的变化。

[4]画家在你还未意识到以前,就已经成功地以各式各样的重复把你的感受的方向控制住了。

[5]不同的阶段的重点也螺旋式地变换着在画面上的位置,步步引入胜。

A.[4][3][2][1][5] B.[2][1][3][5][4]C.[1][3][4][5][2] D.[1][2][4][3][5]6.用斜线(/)给下面的短文断句。

(1)子贡曰君子之过也如日月之食焉过也人皆见之更也人皆仰之必修四默写复习题1.___________________________,人道是、_____________________。

2..乱石穿空,_____________________________________,卷起千堆雪。

3._________________________,小乔初嫁了,___________________。

4.________________________,谈笑间、________________________。

5.人生如梦,__________________________________________。

6.莫听穿林打叶声,__________________________________________。

7.竹杖芒鞋轻胜马,谁怕,____________________________________。

8.______________________________________,微冷,山头斜照却相迎。

9.回首向来萧瑟处,归去,______________________________________。

10._________________________,献愁供恨________________________。

11.把吴钩看了,_______________________________,无人会、登临意。

12._______________________________________,尽西风、季鹰归未?13.倩何人唤取,__________________,___________________________!14.____________________________,风流总被雨打风吹去。

15________________,__________________,人道寄奴曾住。

16.想当年,_____________________________,气吞万里如虎。

17.元嘉草草,封狼居胥(xū),________________________。

18.四十三年,____________________,___________________。

19.可堪回首,__________________,一片神鸦社鼓。

20.薄雾浓云愁永昼,____________________。

21佳节又重阳,__________________________________,半夜凉初透。

22.。

_________________________________,帘卷西风,人比黄花瘦。

23.寻寻觅觅,冷冷清清,__________________________。

24.____________________________,怎敌他晚来风急?25 满地黄花堆积,__________,_________________?26.梧桐更兼细雨,__________,___________________。

27..廉颇曰:“我为赵将,有攻城野战之大功,___________________,而位居我上,且相如素贱人,吾羞,不忍为之下。

”28.已而相如出,望见廉颇,___________________________。

29.于是舍人相与谏曰:“___________________________,徒慕君之高义也。

”30.“今两虎共斗,其势不俱生。

吾所以为此者,___________________________”廉颇闻之,肉袒负荆,因宾客至蔺相如门谢罪。

“五段三分四环节”典范作文欣赏[分论点并列式]钻石有价,我心泰然林徽因曾说:“真正的平静,不是远离车马喧嚣,而是在内心修篱种菊,即使如流往事,涛声依旧,放弃执念,便可寂静安然。

”真正的平静正如此,面对钻石的天价,唯有放弃心中的杂念,泰然处之,方能收获价值。

(开篇提出论点)心之泰然,是坦荡之果,唯有无视价值,方知价值可贵。

(分论点一)“一身正气,两袖清风,三餐温饱,四大皆空”,这是闲士隐者的追求,是清廉的表率。

(阐述句)作为一代名臣的杨震虽无闲士隐者之志,但却有清官廉士之心;面对“暮夜无知”的诱惑,杨震头顶天,脚立地,严词拒绝了以金钱来换取仕途的虚假之人,并留下了“天知,地知,你知,我知,何为暮夜无知?”的千古忠言。

真正的价值彰显于自身,面对金钱,手不曾抖,眼不曾眨,泰然视之,方显自身价值的可贵。

(举例加论钩)心之泰然,是慧硕之花,无所念想便无所犹豫,便也了无牵挂,使之花开绚丽。

(分论点二)经典之所以被奉为经典,就在于它的无需标榜,无人超越。

(阐述句)1984年那经典名著《西游记》的拍摄,使人们记住了那一张张传神俏皮的脸,记住了那一招招活灵活现的演绎,记住了那一次次翻上跃下的惊险传奇……孙悟空的扮演者六小龄童回忆说,当时拍摄,每集工资一百多,钱虽少,却从未抱怨,只是用心投入,没想到这部电视剧能大红大紫,家喻户晓。

成功往往源于没有在不应过分专注之事上分神,抛弃杂念,专心投入,收获的便是成功。

(举例加论钩)心之泰然,是成功之源,任他风雨飘摇,我自安之若素。

(分论点三)静水流深,不露不显,并不影响他滋润万物。

抛却杂念,安然前行。

唯有经受一季明媚春光的诱惑,蝶才能破茧成蝶;否则,便要面对残酷的死亡。

唯有不去念想钻石的价值,钻石的价值才能倍增,关键在于自身是否经得起这一世的浮华。

(阐述句)陶渊明甘愿荷衣担锄行于农耕田亩却不正视官场一眼,那是勇气;李白敢于高唱“天子呼来不上船,自称臣是酒中仙”,仗剑行走天涯,那是勇气,是斜侧荣华富贵,只求一世洒脱的勇气。

(举例加论钩)钻石有价,唯有我心泰然,那一刻,才能闪出绝美光华,收获内心真正的无价。

(结尾升华)[分论点递进式]常怀敬畏之心敬畏之心是对世间事物心怀尊重的态度,以最起码的道德底线规范自己、引导自己的行为,使自我心灵宁静、满足,同时也使世界逐渐失去丑陋得一面。

我们一些人重物质,重享受,这无可厚非,但我们不能不常怀敬畏之心,处理好人与自然、人与人、人与社会的关系。

常怀敬畏之心,就要始终地敬畏自然。

在社会文明不发达的的过去,我们用“天人合一”的观念看待自然。

这是一种敬畏的心理,于是我们做到了人与自然的和谐。

可是,如今,当我们忽视自然规律,不停向自然索求更多,排放更多时我们可有想过,这种漠视自然的态度会让我们自吃恶果吗?还记得因砍伐红树林而减弱了自然对人们的保护作用而使苏门答腊的大海啸酿成逾十万人的死亡的惨痛教训吗?因此,我们面对自然时要时刻抱着敬畏之心,节制自己的生产、生活的行为与欲望,实现人与自然的和谐。

常怀敬畏之心,还要始终地尊重生命。

特蕾莎修女对贫苦人们的爱就是处于她对生命的尊重,哪怕这个生命如此卑微。

她曾把一个濒临死亡的老人带回救护所,他躺在床上,紧紧地握住修女的手,说:我一生活得像条狗,如今我活得像个人,谢谢你!”尊重人的生命,视他人与自我生命平等,看到每个人的价值与尊严,而不因他的种族、财富、地位、学识等而鄙视他、漠视他。

特蕾莎修女用敬畏生命的准则使自己成为“上帝的沉思者”,获得内心的宁静与满足,也用自己的一生践行这个准则,用“用伟大的爱做小小的事”的理念唤起全世界的良知。

这就是常怀敬畏之心的最高体现了。

因此,我们要常怀敬畏之心,敬畏每一个生命,平等地关爱自己、关爱他人。

常怀敬畏之心,还应该对文化有一种敬畏的态度。

季羡林回忆自己的梵文老师西克先生时,说他虽然年过八十,但仍然认真地指导他唯一的学生,并把传承自己毕生之学给一个异国学生看作他余生神圣的使命。

我想,这就是一个真正学者的态度:负责任地研究、谨慎地传承。

这与当今一些对传统文化毫不怀抱敬畏态度,戏说历史的“学者”形成鲜明的对比。

因此,我们要常怀敬畏之心,敬畏知识与学问、文化与传统,这也是学问的生命所在。

无论是对自然、对生命,还是对知识,我们都要常怀敬畏的心理,不要纵容自己逾越那条道德准线,让自己的行为始终与起码的道德操守、人的良知相一致。

否则,我们不仅背叛了自己,也造成世界的混乱、无序。

人啊,还是要常怀敬畏之心,勿以善小而不为,勿以恶小而为之,才能使自己的内在与外在和谐,使人与人之间达到和谐!(甘肃省2010年高考满分作文)。

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