淮南二中2020届高一期末考试
安徽省淮南市寿县第二中学2019-2020学年高一上学期期末考试化学试卷
化学试卷本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,共100分,考试用时90分钟。
可能用到的相对原子质量:H 1 C 12 N 14 O 16 Na 23 Mg 24 Al 27 P 31 S 32 Cl 35.5K 39 Ca 40 Mn 55 Fe 56 Cu 64 Zn 65 Br 80 I 127 Ba 137 Si 28 F 19第I卷(选择题共60分)一、选择题(本题共20小题,每小题3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.古诗是古人为我们留下的宝贵精神财富。
下列诗句中不涉及氧化还原反应的是() A.野火烧不尽,春风吹又生B.粉身碎骨浑不怕,要留清白在人间C.春蚕到死丝方尽,蜡炬成灰泪始干D.爆竹声中一岁除,春风送暖入屠苏2.下列实验装置进行相应实验,不能达到实验目的的是()A.用图1所示装置可制备氢氧化亚铁B.用图2所示装置从碘的CCl4溶液中分离出碘单质C.用图3所示装置验证Na和水反应是否放热D.用图4所示装置蒸干NaCl饱和溶液制备NaCl晶体3.关于O2与O3气体,下列比值一定为2 : 3的是()A.若两种气体所占体积相同,两种气体的质量之比B.若温度及压强相同,两种气体的密度之比C.若两种气体原子数相同,两种气体的质子数之比D.若两种气体的质量相同,两种气体的分子数之比4.某同学在实验报告中记录下列数据,其中正确的是()A.用100 mL 量筒量取12.5 mL 盐酸B.称量NaOH 固体时,将NaOH 直接放在托盘上的纸上C.需用220 mL, 1 mol·L-1 CuSO4溶液,配制时需称62.5g 的CuSO4·5H2O 晶体D.配制稀硫酸时,先向烧杯中注入浓硫酸,再加水稀释5.朱自清在《荷塘月色》中写道:“薄薄的青雾浮起在荷塘里……月光是隔了树照过来的,高处丛生的灌木,落下参差的斑驳黑影……”月光穿过薄雾所形成的种种美景的最本质...原因是()A.空气中的小液滴颗粒直径大小约为1 nm ~ 100 nm B.雾是一种胶体C.月光通过胶体产生了丁达尔效应D.荷塘里的水产生蒸汽形成胶体6.分类是化学学习和研究的常用方法。
淮南市寿县第二中学2019-2020学年高一上学期期末考试物理试卷含答案
物理试卷一、选择题(本大题共12小题,每小题4分,共计48分.在每小题给出的四个选项中,第1—8题只有一项符合题目要求,第9—12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.下列哪一位科学人物首先创造了一套把实验和逻辑推理(包括数学演算)和谐地结合起来的科学方法,从而发展了人类的科学思维方式和科学研究方法( )2. 一名宇航员在某星球上完成自由落体运动实验:让一个小球从一定的高度自由下落,测得在第1 s 内的位移是2 m ,则( )A . 小球在第2 s 末的速度是8 m/sB . 小球在第5 s 内的平均速度是3。
6 m/sC . 小球在前5 s 内的位移是45 mD . 小球在第2 s 内的位移是8 m3.如图OA 为可以绕O 点转动的光滑挡板,AB 为垂直于OA 的光滑挡板.OA 开始时处于水平状态,有一小球静止与AB 和OA 的连接处.现让挡板OA 绕O 点逆时针缓慢转过=60θ︒,该过程中OA 和AB 对小球的作用力N 1和N 2的大小变化情况为 ( ) θ0AA.N1和N2均一直增大B.N1和N2均一直减小C.N1一直减小、N2一直增大D.N1先减小后增大、N2一直增大4.如图所示,用大小为100 N的握力握住一个重为40 N的瓶子.瓶子竖直,始终处于静止状态.已知手掌与瓶子间的动摩擦因数μ=0。
5,则( )A.瓶子受到的摩擦力大小为40 NB.瓶子受到的摩擦力大小为50 NC.当握力进一步增大时,瓶子受到的摩擦力将成正比增大D.当握力持续减小时,瓶子受到的摩擦力大小将持续减小5.一架无人机质量为2kg,运动过程中空气阻力大小恒定.该无人机从地面由静止开始竖直向上运动,一段时间后关闭动力,其v—t 图象如图所示,g取10m/s2。
下列判断正确的是( )A.无人机上升的最大高度为72mB.6~8s内无人机下降C.无人机的升力大小为28ND.无人机所受阻力大小为4N6。
安徽省淮南第二中学2020-2021学年高一下学期期末考试历史试题
安徽省淮南第二中学2020-2021学年高一下学期期末考试历史试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.古代耕作方式决定了农业生产的发展。
中国传统农业的主要耕作方式是A.刀耕火种B.耒耜耕作C.石器助耕D.铁犁牛耕2.南宋年初“中原士民、扶携南渡,不知其几千万人”,南方地区小麦价格暴涨,“农获其利,倍于种稻”,小麦在南方大规模种植,南稻北麦的粮食作物分布格局被打破,对此认识正确的是①南迁的北方人民对面食的需求推动小麦种植②《农政全书》的刊刻推广了先进的种植技术③稻麦兼种技术的发展为小麦种植提供了条件④曲辕犁开始从北方引入,促进生产效率提高A.①②B.①③C.③④D.②③3.《北史•艺术列传》记载北齐綦母怀文(人名)“造宿铁刀,其法烧生铁精,以重柔铤,数宿则成钢”(即用液态生铁对熟铁渗碳)。
綦母怀文不可能A.使用水排鼓风冶铁B.使用煤炭做燃料C.采用灌钢法D.使用粉彩瓷碗在炉旁喝茶4.明朝的一位商人从事纺织业生产和销售,由于生意兴隆,遂雇佣了5位技术工人。
这一历史现象反映的本质问题是A.手工业生产力的提高B.社会商品经济的发展C.资本主义萌芽的出现D.工商业得到政府支持5.徽商是明清时期著名的商帮,他们讲究诚信,吃苦耐劳,将棉布、粮食、食盐进行大区域的贩运,积累了巨额的财富,但很多徽商致富后或“弃贾从儒”,或买田置地。
这说明当时①徽商将积累的财富都用于扩大再生产②农本思想依然占主导地位③传统四民观念对徽商影响很深④商人社会地位显著提高A.①②B.②③C.②④D.①④6.小农经济作为我国古代最重要的经济形式受到历代封建统治者的重视,主要是因为A.受到儒家“仁政”学说的影响B.农民是封建国家赋税的主要承担者C.封建统治者是农民利益的代表D.小农经济满足了人民群众生活需求7.“富者田连阡陌,贫者无立锥之地”是中国古代经济生活中普遍的现象,造成这种现象的原因是A.政局动荡不安B.社会分配不公C.土地兼并严重D.重农抑商政策8.有学者描述某位航海家:“这要感谢他,因为他至死都坚持自己的错觉,认为到达了马六甲附近,找到日本和中国是指日可待。
安徽省淮南第二中学2020学年高一语文下学期期末考试试题
淮南二中 2020 学年度第二学期期末教课质量检测高一语文试题(考试时间:150 分钟,试题满分:150 分)一、现代文阅读(27 分)(一)文学类文本阅读(此题共 3 小题,15 分)阅读下边的文字,达成1~3题。
李一笛刘富强李一笛,原名李谟。
幼年学笛于西域异人,开元年间凭一支竹笛闯荡长安教坊,技压西门追烟、柳如影、张野狐等能手,成为教坊首席乐师,声名直追李龟年、马仙期等大师,朋友赠匾“李一笛”。
那年,他十九岁。
李一笛成名后,长安权贵争相重金宴请。
李一笛约法有三:境不好不吹,客不雅不吹,一次只吹三曲。
一日,李一笛因故宿于越州。
寓居旅馆的十位进士闻讯,醵资相请,会于镜湖水云阁,并商定各带一客捧场。
那夜,云疏,月晕,风清,湖面如镜,澄波万顷,静影沉璧。
李一笛身着一袭水纹银袍,立于水云阁中,举目环顾:客人倒也英俊精致——不过东南角那褐衣老者佝偻席地,似一乞丐。
他皱了皱眉头。
轻云闭月,细风拂浪,波涛陡兴。
李一笛轻启朱唇,吹出一曲《临江仙》,微风飒飒,氤氲齐开,幽香浮动,霓仙飘临。
曲终,众来宾交相赞叹,褐衣老者却哈欠连连,昏昏欲睡。
众来宾面有讥色。
李一笛不语,略深思,另起一曲,倒是《诉衷情》。
笛声哭泣,如泣如诉,潜蛟起舞,嫠妇欲哭。
来宾沉醉其中,曲终许久,砰然叫绝。
老者似被惊醒,微翻眼皮,竟又睡去。
李一笛面有愠色,众来宾面带怒色。
卢进士抱拳道:“孤单丈乃在下街坊,孤傲贫穷,卢某带他来,意在让其一饱耳福,想是老丈久居孤村僻壤,不懂丝竹之雅,望公子包涵,莫要扫了大家兴致。
”大家揶揄不已,孤单丈似又被惊醒,憨憨一笑。
李一笛又吹一曲《水调歌头》,一时愁云出岫,明月孤悬,烟波浩渺,潮打空城;忽而衰草离离,鹧鸪鸣叫,杜鹃啼血,众来宾无不动容伤怀,唏嘘不已。
孤单丈不过浅笑而已。
李一笛面有怒色,道:“老丈这样怠慢,莫不是轻浮李某,抑或是此道妙手,嗤之以鼻?”孤单丈幽幽说道:“李公子认为老朽不会吹笛?”众来宾笑道:“疯了,疯了!”孤单丈渐渐说道:“请李公子试吹一曲《凉州词》,如何?”李一笛即吹《凉州词》曲终,孤单丈静静说道:“公子吹得也还不错,不过曲中夹杂胡乐,难道公子有龟兹朋友?”李一笛大骇,拱手而揖,道:“老丈真乃神人,晚辈吹笛二十载,竟未觉察曲中夹杂胡乐 --- 家师确为龟兹人。
高一英语下学期期末考试试题(74)【2019-2020学年度】
14. What does the woman think of shopping online?
A. Easy.B. Cheap.C. Interesting.
1 5. What do the speakers decide to buy in the end?
高一英语下学期期末考试试题(74)【2019-2020学年度】
编 辑:__________________
时 间:__________________
淮南二中2020届高一年级期末考试英语试卷
第I卷(选择题 100分)
第一部分 听力(共20题,每小题1.5分,共30分)
做题时,先将答案标在试卷上。录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。
12. How will the woman go to the music festival?
A. By underground.B. By bus. C. By taxi.
听下面一段对话,回答第13至第16四个小题。
13. What does the man want to get for Grace at first?
23. If you are interested in sea creatures, you may visit_____ .
A. The Pyramid.B. The Safari Park
C. The Future Tower.D.The Ocean Park.
B
in his cupboards. He asked if we could let him have the food on trust. He promised to repay me the next day.
2024届安徽省淮南市第二中学高一数学第二学期期末教学质量检测试题含解析
2024届安徽省淮南市第二中学高一数学第二学期期末教学质量检测试题注意事项:1. 答题前,考生先将自己的姓名、准考证号填写清楚,将条形码准确粘贴在考生信息条形码粘贴区。
2.选择题必须使用2B 铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整、笔迹清楚。
3.请按照题号顺序在各题目的答题区域内作答,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。
4.保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。
一、选择题:本大题共10小题,每小题5分,共50分。
在每个小题给出的四个选项中,恰有一项是符合题目要求的1.下列函数中,在区间()0,∞+上单调递增的是( )A .12y x =B .12xy ⎛⎫= ⎪⎝⎭C .12log xy =D .1y x=2.已知直线3230x y +-=和610x my ++=互相平行,则它们之间的距离是( )A .51313B .91326C .41313D .713263.设1122511,, 7241a b c log --⎛⎛⎫⎪⎫=== ⎝⎝⎭⎪⎭,则( ) A .a b c >>B .c a b >>C .b a c >>D .a c b >>4.如图,在正方体1111ABCD A B C D -,点P 在线段1BC 上运动,则下列判断正确的是( )①平面1PB D ⊥平面1ACD ②1//A P 平面1ACD③异面直线1A P 与1AD 所成角的取值范围是0,3π⎛⎤ ⎥⎝⎦④三棱锥1D APC -的体积不变 A .①② B .①②④C .③④D .①④5.已知02πα-<<,则点(cot ,cos )αα在( )A .第一象限B .第二象限C .第三象限D .第四象限6.已知数列{}n a 的通项公式()2019112n n n a -⎧-⎪=⎨⎛⎫⎪ ⎪⎝⎭⎩120192020n n ≤≤≥,前n 项和为n S ,则关于数列{}n a 、{}n S 的极限,下面判断正确的是() A .数列{}n a 的极限不存在,{}n S 的极限存在 B .数列{}n a 的极限存在,{}n S 的极限不存在 C .数列{}n a 、{}n S 的极限均存在,但极限值不相等 D .数列{}n a 、{}n S 的极限均存在,且极限值相等7.已知l 为直线,α,β为两个不同的平面,则下列结论正确的是( ) A .若l α,l β∥,则αβ∥ B .若l α⊥,l β⊥,则αβ⊥ C .若l α⊥,l β∥,则αβ⊥D .若l α⊥,βα⊥,则l β∥8.圆222440x y x y ++-+=的半径为( ) A .1B .2C .3D .49.与直线2:10l mx m y --=垂直于点(2,1)P 的直线的一般方程是 ( ) A .30x y +-= B .30x y ++= C .30x y --=D .210m x my +-=10.预测人口的变化趋势有多种方法,“直接推算法”使用的公式是()0 1nn P P k =+(1k >-),n P 为预测人口数,0P 为初期人口数,k 为预测期内年增长率,n 为预测期间隔年数.如果在某一时期有10k -<<,那么在这期间人口数 A .呈下降趋势B .呈上升趋势C .摆动变化D .不变二、填空题:本大题共6小题,每小题5分,共30分。
安徽省淮南市寿县第二中学2019_2020学年高一数学下学期期末考试试题
安徽省淮南市寿县第二中学2019-2020学年高一数学下学期期末考试试题第I 卷(选择题 共60分)一、单选题(本大题共12小题,每题5分,共60分.每小题只有一个选项符合题意) 1.已知x y >,则下列各式中一定成立( )A .11x y <B .12x y +>C .11()()22x y> D .222x y-+>2.等差数列{}n a 的前n 项和为n S ,且,35,13782==+S a a ,则8a =( ) A .8B .9C .10D .113.一个等差数列共有12+n 项,其奇数项的和为512,偶数项的和为480,则中间项的值为( ) A .30B .31C .32D .334.已知数列的通项公式为,它的前项和,则项数等于( )A .B .C .D .5.已知b a ,是不相等的正数,且0--22=++ab b b a a ,则b a +的取值范围是( )A .)34,0( B .)34,1( C .)23,0( D .)23,1(6.在公比为2的等比数列{a n }中,前n 项和为S n ,且S 7﹣2S 6=1,则a 1+a 5=( ) A .5B .9C .17D .337若不等式组033x y x y x y a ->⎧⎪+<⎨⎪+>⎩表示一个三角形内部的区域,则实数a 的取值范围是( )A .3,4⎛⎫+∞⎪⎝⎭B 3,2⎛⎫+∞ ⎪⎝⎭C .3,4⎛⎫-∞ ⎪⎝⎭D .3,2⎛⎫-∞ ⎪⎝⎭8.在ABC ∆中,2AB AC =,AD 是A ∠的平分线,且AC tAD =,则t 的取值范围是( )A .3,4⎛⎫+∞ ⎪⎝⎭B .41,3⎛⎫⎪⎝⎭C .30,4⎛⎫ ⎪⎝⎭D .3,14⎛⎫ ⎪⎝⎭9.设正实数,,x y z 满足22240x xy y z -+-=,则xy z当取得最大值时,211x y z+-的最大值为( )A .1B .4C .94 D .9210.设x,y 满足约束条件若目标函数z=ax+by(a>0,b>0)的最大值为12,则4922b a +的最小值为( ) A .21 B .2513 C .1 D .211.在数列{}n a 中,21nn a =-,一个5行6列的数表中,第i 行第j 列的元素为ij i j i j c a a a a =⋅++(1,2,,5,1,2,,6)i j ==,则该数表中所有元素之和为( )A .132410-B .132380-C .12214-D .1224-12.已知函数21(01)()(1)(1)x x f x f x m x ⎧-≤≤=⎨-+>⎩在定义域[)0,+∞上单调递增,且对于任意0a ≥,方程()f x a =有且只有一个实数解,则函数()()g x f x x =-在区间*0,2()n n N ⎡⎤∈⎣⎦上的所有零点的和为( )A .(1)2n n +B .21122n n --+C .2(21)2n +D .21n -第II 卷(非选择题 共90分)二、填空题(本大题共4题,每题5分,共20分)13.已知等比数列{a n }的前n 项和为S n ,且S 3=7a 1,则{a n }的公比q 的值为_____.14.设ABC ∆的内角A 、B 、 C 所对的边分别为a ,b ,c ,3b =,()2cos 3cos a c B C -=,则ABC ∆面积的最大值是__________..15关于x 的一元二次方程01)1-(2=++x m x 在区间[]2,0上有实数解则实数m 的取值范围为______.16.若存在实数,a b ,对任意实数[0,4]x ∈,使不等式x m ax b x m -≤+≤+恒成立,则m 的取值范围为______.三、解答题(本大题共6题,17题10分,18—22题每题12分,共70分)17.在△ABC 中,角A ,B ,C 对应的边分别是a ,b ,c ,已知cos2A ﹣3cos (B+C )=1. (1)求角A 的大小; (2)若△ABC 的面积S=5,b=5,求sinBsinC 的值.18.已知函数2()1()f x ax ax a R =--∈.(1)若对任意实数x ,()0f x <恒成立,求实数a 的取值范围;(2)解关于x 的不等式()23f x x <-19.已知数列{}n a 的前n 项和为n S ,且2n n S a n =-. (1) 求出数列{}n a 的通项公式;(2) 记(21)(1)n n b n a =-+,求数列{}n b 的前n 项和n T .20.在ABC ∆中,内角,,A B C 所对的边分别是,,a b c ,已知sin 4sin 5sin b B a B a A =+.(1)若c =,求角C 的大小;(2)若2a =,且ABC ∆的面积为,求ABC ∆的周长.21.已知数列{}n a 的前n 项和为n S ,且112n n n S na a =+-. (1)求数列{}n a 的通项公式;(2)若数列22n a ⎧⎫⎨⎬⎩⎭的前n 项和为n T ,证明:32n T <.22.已知函数()()()3log 101x f x x x +=>+的图象上有一点列()()*,n n n P x y n N ∈,点n P 在x 轴上的射影是(),0n n Q x ,且132n n x x -=+(2n ≥且*n N ∈),12x =. (1)求证:{}1n x +是等比数列,并求出数列{}n x 的通项公式; (2)对任意的正整数n ,当[]1,1m ∈-时,不等式21363n t mt y -+>恒成立,求实数t 的取值范围.(3)设四边形11n n n n P Q Q P ++的面积是n S ,求证:1211132nS S nS ++⋯+<答案1 ~ 12 DDCDB CDABA AB13.2或﹣3 143315. 1-≤m 1614m ≥ 17.试题解析:(1)由cos 2A -3cos(B +C)=1, 得2cos 2A +3cos A -2=0, 即(2cos A -1)(cos A +2)=0,解得cos A =或cos A =-2(舍去).因为0<A<π,所以A =.(2)由S =bcsin A =bc×=bc =5,得bc =20,又b =5,知c =4.由余弦定理得a 2=b 2+c 2-2bccos A =25+16-20=21,故a =.从而由正弦定理得sin B sin C =sin A×sin A =sin 2A =×=.18试题解析:(1)当0a =时,()10f x =-<恒成立;当0a ≠时,要使对任意实数x ,()0f x <恒成立,需满足()()20410a a a <⎧⎪⎨∆=---<⎪⎩, 解得40a ,故实数a 的取值范围为04-≤<a .(2)由不等式()23f x x <-得()2220ax a x -++<, 即()()210ax x --<.方程()()210ax x --=的两根是11x =,22(0)x a a=>. ①当0a <时,20a<,不等式的解为2x a <或1x >;②当0a =时,不等式的解为1x >; ③当02a <<时,21a <不等式的解为21x a<<; ④当2a =时,21a=,不等式无解; ⑤当2a >时,21a >,不等式的解为21x a<< 综上:①当0a <时,不等式的解为{x 2x a<或}1x >; ②当0a =时,不等式的解为{x }1x >;③当02a <<时,不等式的解为{}21x x a<<;④当2a =时,,不等式解集为∅ ; ⑤当2a >时,不等式的解为{}21xx a<< 19(1)2n n S a n =-(n ∈N*), 可得n =1时,a 1=S 1+1=2a 1, 即a 1=1,当n ≥2时,a n =S n ﹣S n ﹣1,S n +n =2a n ,S n ﹣1+n ﹣1=2a n ﹣1,相减可得a n +1=2a n ﹣2a n ﹣1,可得a n =2a n ﹣1+1,即a n +1=2(a n ﹣1+1),则数列{a n +1}为首项为2,公比为2的等比数列, 可得a n +1=2n,即a n =2n﹣1;(2)(21)(1)=(21)2nn n b n a n =-+-⋅前n 项和为T n =()1212+32+212n n ⋅⋅-⋅①2T n =()23+112+32+212n n ⋅⋅-⋅②① ②相减可得﹣T n =2+2(22+…+2n)﹣()+1212n n -⋅=()()114122+221212n n n -+-⋅--⋅-化简可得1(23)26n nT n +=-⋅+20.试题解析:(1)∵sin 4sin 5sin b B a B a A =+,∴22540a ab b +-=,∴5b a =.∵c =,∴2222251cos 2102a b c a C ab a +--===-.∵()0,C π∈,∴23C π=. (2)∵2a =,∴10b =,∴1sin 10sin 2ab C C ==sin 2C =. 当C 为锐角时,由余弦定理得,2222cos c a b ab C =+-=141002210842+-⨯⨯⨯=,∴c =,此时ABC ∆的周长为12+当C 为钝角时,由余弦定理得,2222cos c a b ab C =+-=1410022101242⎛⎫+-⨯⨯⨯-= ⎪⎝⎭,∴c =此时ABC ∆的周长为12+21【详解】(1)当1n =时,111112S a a =+-,即12a =, 当2n ≥时,112n n n S na a =+-①, ()1111112n n n S n a a ---=-+-②, ①-②,得:()112122n n n n n a na n a a a --=--+-,即()11n n na n a -=+,11n n a a n n-∴=+,且112a=,∴数列1n a n ⎧⎫⎨⎬+⎩⎭是以每一项均为1的常数列,则11n a n =+,即()*1n a n n N =+∈;(2)由(1)得1n a n =+,()()2222211221n a n n n n n ∴=<=-+++, 11111111113113243522122n T n n n n ∴<-+-+-++-=+--<+++. 22.(1)解:由132n n x x -=+(2n ≥且*n N ∈)得()1131n n x x -+=+(2n ≥且*n N ∈)∵113x +=,∴10n x +≠,∴1131n n x x -+=+,(2n ≥且*n N ∈)∴{}1n x +是首项为3,公比为3的等比数列. ∴()111133n n n x x -+=+=.∴31nn x =-,*n N ∈.(2)∵()()3log 3113113n n nn nn y f x -+===-+,∵1113133n n n n y n n y n n++++=⋅=,*n N ∈,又312111n n n n =++->+>,∴11n ny y +<故数列{}n y 单调递减,(此处也可作差10n n y y +-<证明数列{}n y 单调递减) ∴当1n =时,n y 取得最大值为13. 要使对任意的正整数n ,当[]1,1m ∈-时,不等式21363n t mt y -+>恒成立, 则须使()2max 113633n t mt y -+>=,即220t mt ->,对任意[]1,1m ∈-恒成立, ∴222020t t t t ⎧->⎨+>⎩,解得2t >或2t <-, ∴实数t 的取值范围为()(),22,-∞-⋃+∞.(3)()()11313123n n n n n Q Q ++=---=⋅,而3n n n n P Q =, ∴四边形11n n n n P Q Q P ++的面积为()11112n n n n n n n S P Q P Q Q Q +++=+ 11141232333nn n n nn +++⎛⎫=+⋅⋅=⎪⎝⎭()()131211111112123414414414441n nS n n n n n n n n n n ⎛⎫⎛⎫⎛⎫===-<-=- ⎪ ⎪ ⎪+++++⎝⎭⎝⎭⎝⎭12111111111113131322233411n S S nS n n n ⎛⎫⎛⎫++⋯+<-+-+-+⋯+-=-< ⎪ ⎪++⎝⎭⎝⎭, ∴故1211132nS S nS ++⋯+<.。
安徽省淮南第二中学高一 物理第一学期期末考试卷含答案
安徽省淮南第二中学高一物理第一学期期末考试卷含答案一、选择题1.如图所示,游乐场中,从高处A到水面B处有两条长度相同的光滑轨道,甲、乙两小孩沿不同轨道同时从A处自由向B处,滑过B处时的速率相等,下列说法正确的是()A.甲比乙先到达B处B.甲通过的位移比乙通过的位移小C.甲、乙下滑的加速度大小时刻相等D.甲、乙在同一时刻总能到达同一高度2.一汽车通过拱形桥顶点时速度为10 m/s,车对桥顶的压力为车重的3/4,如果要使汽车在桥顶对桥面没有压力,车速至少为;A.15 m/s B.20 m/sC.25 m/s D.30 m/s3.对于平抛运动,下列说法正确的是()A.落地时间和落地时的速度只与抛出点的高度有关B.平抛运动是加速度方向变化的曲线运动C.做平抛运动的物体,在任何相等的时间内位移的增量都是相等的D.做平抛运动的物体,在任何相等的时间内速度的增量都是相同的4.如图所示,在前进的车厢的竖直后壁上放一个物体,物体与壁间的动摩擦因数μ,要使物体不致下滑,车厢前进的加速度至少应为(重力加速度为g,最大静摩擦力等于滑动摩擦力)A.μg B.gμC.gμD.g5.如图所示,位于斜面上的物块m在沿斜面向上的力F作用下,处于静止状态,则斜面作用于物块的静摩擦力说法错误的是( )A.方向可能沿斜面向上B.方向可能沿斜面向下C.大小可能等于零D.大小一定不等于零6.下列关于弹力的说法中正确的是()A.直接接触的两个物体间必然有弹力存在B.不接触的物体间也可能存在弹力C.只要物体发生形变就一定有弹力D.直接接触且发生弹性形变的物体间才产生弹力7.下列说法中正确的是()A.重心一定在物体上B.当物体浮在水中时,所受重力比在地面上时要小C.形状规则的物体其重心一定在物体的几何中心D.重力的方向是竖直向下8.一汽车以36km/h的速度在水平路面上匀速行驶,驾驶员发现正前方斑马线上有行人后立即刹车使汽车做匀减速运动。
已知该驾驶员的反应时间为0.4s,汽车行驶过程中的v-t 图象如图所示,则汽车刹车的加速度大小为()A.15m/2s B.18m/2s C.5m/2s D.4.2m/2s9.下列物理量中不属于矢量的是()A.速率B.速度C.位移D.静摩擦力10.在科学研究中,可以用风力仪直接测量风力的大小,其原理如图所示,仪器中有一根轻质金属丝,悬挂着一个空心金属球,无风时金属丝竖直下垂;当受到沿水平方向吹来的风时,金属丝偏离竖直方向一个角度θ,风力仪根据偏角θ的大小指示出风力大小.若m=1kg,θ=30°,g取10m/s2.则风力大小为()A.5N B.53N C.1033N D.103N11.下列物理量中,属于矢量的有()A.路程B.时间C.加速度D.质量12.如图所示,质量为m的物体在恒力F的作用下沿天花板匀速滑动,F与水平方向的夹角为θ,物体与天花板之间的动摩擦因数为μ,则物体受到的摩擦力大小是( )A.F cosθB.F sinθC.μ(F sinθ+mg)D.μ(mg-F sinθ)13.如图所示,质量为10kg的物体,在水平地面上向左运动,物体与水平地面间的动摩擦因数为0.2,与此同时,物体受到一个水平向右的拉力F=20N的作用,则物体的加速度为()A.0 B.2m/s2,水平向右C.4m/s2,水平向右D.2m/s2,水平向左14.金属小桶侧面有一小孔A,当桶内盛水时,水会从小孔A中流出.如果让装满水的小桶自由下落,不计空气阻力,则在小桶自由下落过程中()A.水继续以相同的速度从小孔中喷出B.水不再从小孔喷出C.水将以更大的速度喷出D.水将以较小的速度喷出15.在下列叙述中,哪些是表示时间的?()A.上学途中用了40分钟B.下午5点30分放学C.早晨8点钟开始上课D.晚上10点30分睡觉16.下列两个实验中体现出的共同的物理思想方法是()A.极限法B.控制变量法C.放大法D.等效替代法17.一物体受到三个共面共点力F1、F2、F3的作用,三力的矢量关系如图所示(各小方格边长相等),则下列说法正确的是()A.三力的合力为F1+F2+F3,方向不确定B.三力的合力为3F2,方向与F2同向C.三力的合力为2F3,方向与F3同向D.由题给条件无法求出合力大小18.甲乙两人同时同地步行出发做直线运动,前1小时的位移-时间图像如图所示,则()A.0.2-0.5小时内,甲的加速度比乙大B.0.2-0.5小时内,甲的速度比乙大C.0.2-0.8小时内,甲的位移比乙大D.0.8小时内,甲乙步行的路程相等19.在水平传送带上的物体P,随传送带一起沿水平方向匀速运动,并且P与传送带保证相对静止,如图所示,此时传送带对物体P的摩擦力()A.方向可能向左B.方向一定向左C.方向一定向右D.一定为零20.如图所示,在加速上升的电梯中,小明站在一个台秤上.下列说法正确的是A.人对秤的压力与秤对人的支持力是一对平衡力B.秤对人的支持力与人的重力是一对平衡力C.秤对人的支持力等于人对秤的压力D.人处于失重状态二、多选题21.如图所示,A、B、C三球质量均为m,轻质弹簧一端固定在斜面顶端、另一端A球相连,A、B间固定一个轻杆,B、C间由一轻质细线连接。
安徽省淮南市第二中学2020-2021学年高一上学期期末考试物理试题
安徽省淮南市第二中学2020-2021学年高一上学期期末考试物理试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.在29届奥运会上,甲、乙两运动员同时参加了在北京奥林匹克中心体育场举行的400m田径决赛,甲在第二道(田径赛场最内道为第一道),乙在第六道,终点线在两运动员起跑线的后方,则两人在比赛过程中通过的位移和路程的大小关系是()A.甲的位移大B.乙的位移大C.甲的路程大于乙的路程D.乙的路程大于甲的路程2.甲、乙两辆汽车从同一地点沿同一条平直的公路运动,它们的v-他图象如图所示,由此可知()A.在t1时刻,甲和乙相遇B.在t1时刻,甲和乙的速度大小相等,方向相反C.在t2时刻,甲和乙的速度方向相同,加速度方向相反D.在t2时刻,甲和乙的速度相同,加速度也相同3.做匀减速直线运动的物体,最后停下来,以下说法中正确的是()A.速度和加速度都随时间减小B.速度和位移都随时间减小C.速度和加速度的方向相反D.速度和加速度都为负值4.下列说法中,正确的是()A.有摩檫力存在的接触面上,一定同时有弹力存在B.有弹力存在的接触面上,一定同时有摩檫力存在C.两个接触且相对运动的物体,其接触面之间一定有摩檫力存在D.两个接触且没有相对运动的物体,其接触面之间一定没有摩檫力存在5.一根轻质弹簧一端固定,用大小为F1的力压弹簧的另一端,平衡时长度为l1;改用大小为F 2的力拉弹簧,平衡时长度为l 2。
弹簧的拉伸或压缩均在弹性限度内,该弹簧的劲度系数为( )A .2121F F l l --B .2121F F l l ++C .2121F F l l -+D .2121F F l l +- 6.下列关于力的合成和分解的说法,正确的是( )A .两个力的合力,不可能小于一个分力B .两个分力的大小和方向都被确定,则合力也被确定C .5N 、2N 、6N 三个共点力最大合力为13N ,最小合力为1ND .静止在斜面上的物体的重力,可以分解为一个使物体沿斜面下滑的力,另一个是物体对斜面的压力7.质量为 0.5kg 的物体由静止开始沿光滑斜面下滑,下滑到斜面的底端后进入粗糙水平面滑行,直到静止,它的v-t 图象如图所示.(g 取10g⁄s 2)那么,下列说法中正确的是( )A .斜面的倾角为60°B .物体在斜面上受到的合外力是5NC .物体与水平面的动摩擦因数为0.25D .物体在水平面上受到的合外力是2.5N8.两辆汽车在同一水平路面上行驶,它们的质量之比为1∶2,速度之比为2∶1.设两车与地面的动摩擦因数相等,则当两车紧急刹车后,滑行的最大距离之比为( ) A .1∶2 B .1∶1 C .2∶1 D .4∶19.如图所示,质量M ,中空为半球型的光滑凹槽放置于光滑水平地面上,光滑槽内有一质量为m 的小铁球,现用一水平向右的推力F 推动凹槽,小铁球与光滑凹槽相对静止时,凹槽圆心和小铁球的连线与竖直方向成α角.则下列说法正确的是( )A .小铁球受到的合外力方向水平向左B .凹槽对小铁球的支持力为sin mgC .系统的加速度为a= gtanαD .推力F= Mgtanα 10.“神舟七号”宇宙飞船的返回舱在重返大气层时,速度可达几千米每秒.为保证返回舱安全着陆,在即将落地时要利用制动火箭使返回舱减速到某一安全值,在这段时间内( )A .飞船处于失重状态B .飞船处于超重状态C .宇航员受到的重力变大了D .宇航员受到的重力与返回舱对他的支持力相等11.如图所示,河的宽度为L ,河水流速为,甲、乙两船均以相同的静水中速度同时渡河。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
淮南二中2020届高一年级期末考试英语试卷第I卷(选择题 100分)第一部分听力(共20题,每小题1.5分,共30分)做题时,先将答案标在试卷上。
录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。
第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
例:How much is the shirt?A. £ 19. 15.B. £ 9. 15.C. £ 9. 18.答案是B。
1. Where is the woman from?A. The USA.B. Canada.C. Japan.2. What color dress does the man tell the woman to wear?A. Red.B. Blue.C. Grey.3. What do the speakers decide to do?A. Have dinner late.B. Meet in the man’s office.C. See a movie.4. What are the speakers mainly talking about?A. Some songs.B. Their hobbies.C. A band.5. Why hasn’t the man taken a photo?A. The fog is thick.B. The temple is too far.C. The camera is broken.第二节(共 15 小题;每小题 1.5 分,满分 22.5 分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C 三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听下面一段对话,回答第6和第7两个小题。
6. What did the man do in summer?A. He visited his brother.B. He went swimming.C. He traveled to Italy.7. What is the relationship between the speakers?A. Classmates.B. Teacher and student.C. Guide and tourist. 听下面一段对话,回答第8和第9两个小题。
8. What does the man want to do with the trousers at first?A. To exchange them.B. To return them.C. To repair them.9. When will the man go to a party?A. On Wednesday.B. On Friday.C. On Saturday.听下面一段对话,回答第10至第12三个小题。
10. What will the man do on Saturday night?A. Attend a music festival.B. Visit his friend.C. Invite his friends to dinner.11. What is the woman’s problem?A. Her car has broken down.B. Her boss told her to work at weekends.C. Her sister can’t drive her to the music festival.12. How will the woman go to the music festival?A. By underground.B. By bus.C. By taxi.听下面一段对话,回答第13至第16四个小题。
13. What does the man want to get for Grace at first?A. A cat.B. Pet food.C. Books.14. What does the woman think of shopping online?A. Easy.B. Cheap.C. Interesting.15. What do the speakers decide to buy in the end?A. Sweets.B. Flowers.C. A plant.16. Where are the speakers?A. At home.B. At a pet shop.C. At a bookstore.听下面一段独白,回答第17至第20四个小题。
17.How did the speaker know about the good news?A. From Julie’s mother.B. From a TV programme.C. From Julie’s friends.18. What does the speaker guess Julie is celebrating for?A. A new club.B. Her new novel.C. Her graduation.19. How does the speaker feel about Julie?A. Disappointed.B. Worried.C. Satisfied.20. What did Julie do as a child?A. She won a competition.B. She joined a writing club.C. She gave some lectures.第二部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
AWelcome to Adventureland!Everyone loves Adventureland! The Parks and Exhibitions were built for you to explore, enjoy, and admire their wonders. Every visit will be an unforgettable experience. You will go away enriched, longing to come back. What are you going to do this time?The Travel PavilionExplore places you have never been to before, and experience different ways of life. Visit the Amazon jungle(丛林)village, the Turkish market, the Tai floating market, the Berber mountain house and others. Talk to the people there who will tell you about their lives, and things they make. You can try making a carpet, making nets, fishing…The Future TowerThis exhibition shows how technology will affect our lives. It allows us to look into the future and explore the cities of the next century and the way we’ll be living then. Spend some time in our space station and climb into our simulator(模拟装置)for the Journey to Mars! The Nature ParkThis is not really one park but several. In the Safari Park you can drive among African animals in one of our Range Cruisers: see lions, giraffes, elephants in the wild. Move on to the Ocean Park to watch the dolphins and whales. And then there is still the Aviary to see…The PyramidThis is the center of Adventureland. Run out of film, need some postcards and stamps? For all these things and many more, visit our underground shopping center. Come here for information and ideas too.21. The Travel Pavilion might interest people_______ .A. who like shoppingB. who like huntingC. who want to experience different lifestylesD. who want to live an old-fashioned lifestyle22.The Future Tower is designed to help us____.A.go on a journey to Mars B.explore cities worldwide C.experience effects technology will have on lifeD.learn about the latest technology23. If you are interested in sea creatures, you may visit_____ .A. The Pyramid.B. The Safari ParkC. The Future Tower.D. The Ocean Park.BCompassion(同情心) is a desire within us to help others. With effort, we can translate compassion into actions. An experience last weekend showed me this is true. I work part-time in a supermarket across from a building for the elderly. These old people are our main customers, and it’s not h ard to lose patience over their slowness. But last Sunday, one aged gentleman appeared to teach me a valuable lesson. This untidy man walked up to my register (收款机)with a box of biscuits. He said he was out of cash, had just moved into his room, and had nothing in his cupboards. He asked if we could let him have the food on trust. He promised to repay me the next day.I couldn’t help staring at him. I wondered what kind of person he had been ten or twenty years before, and what he would be like if luck had gone his way. I had a hurt in my heart for this kind of human soul, all alone in the world. I told him that I was sorry, but store rules didn’t allow me to do so. I felt stupid and unkind saying this, but I valued my job.Just then, another man, standing behind the first, spoke up. If anything, he looked more pitiable. “Change it to me. ” was all he said.What I had been feeling was pity. Pity is soft and safe and easy. Compassion, on the other hand, is caring in action. I thanked the second man but told him that was not allowed either. Then I reached into my pocket and paid for the biscuits myself. I reached into my pocket because these two men had reached into my heart and taught me compassion.24. The author lost patience on customers mainly because _________ .A. They were poor and meanB. They were untidyC. They were old and slowD. They were lonely25. Why did the author refuse the old man?A . he didn’t want to lose his present jobB.he was cold-bloodedC.he thought of the man as poorD.he wanted someone else to pay26. Who finally paid for the the box of biscuits?A. the old man himselfB. the authorC. another customerD. none of them27. According to the last paragraph, which of the following is true about pity and compassion?A. Pity can certainly lead to compassionB. Pity can’t lead to compassion.C. Pity is the feeling while compassion shows in action.D. Pity has nothing to do with compassionCHere is some mustknow information from a handbook on how people behave in doing business in some countries.In BrazilBrazilians are warm and friendly.They often stand close when talking and it is common for them to touch the person on the shoulder.People often greet each other (particularly women) with light cheek kisses.Schedules tend to be flexible,with business meetings sometimesstarting later than planned. But to be safe, be on time. Meals can stretch for hours—there's no such thing as rushing a meal in Brazil. Lunches also can start in the mid to lateafternoon.Brazilians are social,preferring face-to-face communication over e-mails or phone calls.In SingaporeSingaporeans shake hands when they meet and often also greet each other with a small,polite bow. Business cards should be offered and received with two hands.Arriving late is considered disrespectful.So be on time. Efficiency(效率) is the goal, so meetings and dealings often are fast-paced.Singaporeans are direct in their discussions,even when the subject is about money.Rank is important and authority is respected.This determines how people interact in meetings.For example,people avoid disagreeing outright with someone of a higher rank.In the United Arab EmiratesIn the UAE,status is important, so the most senior or oldest should be greeted first with their titles.The handshake seems to be longer than elsewhere. So do not pull away from the handshake. Women should cover themselves when it comes to dress.Men also tend to be covered from neck to elbows(肘部) and down to the knees.People do not avoid entertaining in their homes,but they also hold business meals at restaurants.Touching or passing food or eating with your left hand is to be avoided.When meetings are one-to-one, if your host offers you coffee,you should refuse.It might seem odd,but it is a cultural tradition.Coffee should only be accepted if it is already set out or presented.In SwitzerlandThe Swiss tend to be formal and address each other by last name.They also are respectful of private lives.You should be careful not to ask about personal topics.Punctuality (守时) is vital,something that comes from a deep respect for others' time. Arrive at any meeting or event a few minutes early to be safe.They also have clear structure in theircompanies.Higher-ups make the final decisions,even if others might disagree.Neat,clean dress is expected.The Swiss follow formal table manners.They also keep their hands visible at the table and their elbows off the table.It is polite to finish the food on your plate.28.The passage is mainly about ________.A.customs and business mannersB.the workplace atmosphereC.lifestyles in different countriesD.living conditions29.Which of the following is true about Brazil?A. Meetings start strictly as plannedB. They like to keep a distance when talkingC. Meals can last for hoursD. People prefer e-mails rather than face-to-face communication30. Why do Singaporeans avoid disagreeing straight with the boss?A. Efficiency is highly valuedB. They don’t like to talk to their bossC. They want to save timeD. To show respect for someone of a higher rank31. In which country do people care about which hand to use when eating?A. in Brazil.B. in Singapore.C. in the United Arab Emirates.D. in Switzerland.DNearly every week, we hear news about the latest successes and failures in driverless vehicles. But we hear little about how other industries are developing this same kind of technology.One industry heavily involved in researching and developing artificial intelligence, or AI, is agriculture. Companies are experimenting with high-tech tools that can help farmers save time and money, while reducing environment-harming chemicals.One of the companies is ecoRobotix of Switzerland. It created a robot equipped with AI and cameras to identify all plants on a farm. The robot has four wheels to carry it through the fields in search of weeds. Computer-controlled arms then lower and spray the weeds with small amounts of chemicals.Company officials say the robot can fully operate on its own for up to 12 hours a day while being powered by the sun. It uses the same kind of sensor and positioning technology used to guide driverless vehicles. A farmer can also control the equipment through a smartphone. The co-founder of ecoRobotix, Aurelien Demaurex, says the farm robot can kill weeds with 20 times less chemicals than traditional methods. This is because the system uses exactly the right amount of chemical in the exact place required to kill the weeds.Currently, farmers spread weed killers over huge areas to destroy unwanted plants.This method led to a huge industry of genetically engineered crop products created to resist chemicals. The process of changing the genetic structure of food crops has been debated for some time. Critics of genetically engineered crops believe they can harm people. Large chemical companies have been criticized for supporting genetic crop engineering in order to keep driving chemicals sales.Aurelien Demaurex says the ecoRobotix system can revolutionize farming by greatly reducing chemical usage, while operating without additional equipment or people. The company is planning to bring its robot to the market by early next year.32.which is closest in meaning to the bold faced word “weeds”_____A. seedsB. cropsC. unwanted plantsD. unwanted seeds33.Which statement is true about the robot created by ecoRobotix?_____A . it will cost farmers more money.B . it can be controlled through smartphones by farmersC.it’s powered by wind energyD.it’s already in wide use34.Why do chemical companies support genetic crop engineering?A.because genetically engineered crop can resist chemicalsB.because genetically engineered crop can grow fastC.because chemical companies want to promote chemical salesD.because chemical companies are not aware of its danger.35.which is probably the best title?A.Smart Farm EquipmentB.Agriculture in the FutureC.Genetic Crop EngineeringD.Artificial Intelligence第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,并在答题卡上将该项涂黑。