公安县博雅中学2018年高一年级6月半月考-答题卡
2018-2019学年湖北省荆州市博雅中学高一数学理测试题
2018-2019学年湖北省荆州市博雅中学高一数学理测试题一、选择题:本大题共10小题,每小题5分,共50分。
在每小题给出的四个选项中,只有是一个符合题目要求的1. 函数的定义域为()A.B.C.D.参考答案:B2. 已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,|φ|<)的部分图象如图所示,下列说法正确的是()A.函数f(x)的图象关于直线x=﹣对称B.函数f(x)的图象关于点(﹣,0)对称C.若方程f(x)=m在[﹣,0]上有两个不相等的实数根,则实数m∈(﹣2,﹣]D.将函数f(x)的图象向左平移个单位可得到一个偶函数参考答案:C【考点】函数y=Asin(ωx+φ)的图象变换.【分析】由函数的图象的顶点坐标求出A,由周期求出ω,由五点法作图求出φ的值,可得f(x)的解析式;再利用正弦函数的定义域和值域,正弦函数的图象和性质,判断各个选项是否正确,从而得出结论.【解答】解:根据函数f(x)=Asin(ωx+φ)(A>0,ω>0,|φ|<)的部分图象,可得A=2,=﹣,∴ω=2.再根据五点法作图,可得2?+φ=π,∴φ=,f(x)=2sin(2x+).当x=﹣时,f(x)=0,不是最值,故函数f(x)的图象不关于直线x=﹣对称,故排除A;当x=﹣时,f(x)=﹣2,是最值,故函数f(x)的图象关于直线x=﹣对称,故排除B;在[﹣,0]上,2x+∈[﹣,],方程f(x)=m在[﹣,0]上有两个不相等的实数根,则实数m∈(﹣2,﹣],故C正确;将函数f(x)的图象向左平移个单位,可得y=2sin(2x++)=﹣sin2x 的图象,故所得函数为奇函数,故排除D,故选:C.【点评】本题主要考查由函数y=Asin(ωx+φ)的部分图象求解析式,由函数的图象的顶点坐标求出A,由周期求出ω,由五点法作图求出φ的值,正弦函数的定义域和值域,正弦函数的图象和性质,属于中档题.3. (5分)设集合A={x|1≤x≤2},B={x|x≥a}.若A?B,则a的范围是()A.a<1 B.a≤1C.a<2 D.a≤2参考答案:B考点:集合的包含关系判断及应用.分析:根据题意,A?B,在数轴上表示集合A,分析a的值,可得答案.解答:根据题意,A?B,而A={x|1≤x≤2},在数轴上表示可得,必有a≤1,故选B.点评:本题考查集合间的包含关系的运用,难点在于端点的分析,有时需要借助数轴来分析.4. 若正数x,y满足,则的最小值为( )A.9 B.10 C.11 D.12参考答案:A5. △ABC的外接圆的圆心为O,半径为1,2=+,且||=||,则?=()A.1 B.2 C.D.参考答案:A【考点】平面向量数量积的运算.【分析】根据向量加法的平行四边形法则,知O是BC的中点,由△ABC的外接圆的圆心为O,知BC是圆O的直径,从而求得AB⊥AC,另由||=||,可得∠ABC=60°,故利用向量数量积的定义可以求得【解答】解:∵△ABC的外接圆的圆心为O,半径为1,2=+,∴O是BC的中点,且BC是圆O的直径,∴AB⊥AC,AO=1,BC=2,∵||=||,∴AB=1,∴∠ABC=60°,∴?=1×2×cos60°=1,故选A.【点评】此题是个基础题.考查向量在几何中的应用,以及直角三角形有关的性质,同时考查学生灵活应用知识分析解决问题的能力和计算能力.6. 圆与圆的位置关系是A.内切 B.相交 C.外切 D.相离参考答案:B略7. 已知集合( )A. ( 2, 3 )B. [-1,5]C. (-1,5) D. (-1,5]参考答案:B8. (5分)集合A={1,2,3},B={3,4},则A∩B=()A.{3} B.{1,2,4} C.{1,2,3,4} D.?参考答案:A考点:交集及其运算.专题:计算题.分析:由A与B,找出两集合的交集即可.解答:∵A={1,2,3},B={3,4},∴A∩B={3}.故选A点评:此题考查了交集及其运算,熟练掌握交集的定义是解本题的关键.9. 设与是不共线向量,,若且,则实数的值为()A.0 B.1 C. D.参考答案:C10. 函数f(x)=a x﹣1+4(a>0,且a≠1)的图象过一个定点,则这个定点坐标是()A.(5,1)B.(1,5)C.(1,4)D.(4,1)参考答案:B【考点】指数函数的单调性与特殊点.【分析】由题意令x﹣1=0,解得x=1,再代入函数解析式求出y的值为5,故所求的定点是(1,5).【解答】解:令x﹣1=0,解得x=1,则x=1时,函数y=a0+4=5,即函数图象恒过一个定点(1,5).故选B.二、填空题:本大题共7小题,每小题4分,共28分11. 若函数的定义域是, 则其值域为_________.参考答案:略12. 已知函数y=f(x)是定义在R上的奇函数,当x≥0时,f(x)=x(1+x),则x<0时,f(x)的表达式是.参考答案:f(x)=x(1﹣x)【考点】函数奇偶性的性质.【分析】设x<0,则﹣x>0,由已知条件可得f(﹣x)=﹣x(1﹣x),即﹣f(x)=﹣x (1﹣x),由此求得x<0时,f(x)的表达式.【解答】解:设x<0,则﹣x>0,由当x≥0时f(x)=x(1+x)可得:f(﹣x)=﹣x(1﹣x).再由函数为奇函数可得﹣f(x)=﹣x(1﹣x),∴f(x)=x(1﹣x).故x<0时f(x)的表达式为:f(x)=x(1﹣x).故答案为:f(x)=x(1﹣x)【点评】本题主要考查利用函数的奇偶性求函数的解析式,属于基础题.13. 若则的最小值是参考答案:,即,,当且仅当即时取等号.14. 已知点A(1,﹣2),若向量与=(2,3)同向,||=2,则点B 的坐标为.参考答案:(5,4)【考点】9J:平面向量的坐标运算.【分析】先假设A、B点的坐标,表示出向量,再由向量与a=(2,3)同向且||=2,可确定点B的坐标.【解答】解:设A点坐标为(x A,y A),B点坐标为(x B,y B).∵与a同向,∴可设=λa=(2λ,3λ)(λ>0).∴||==2,∴λ=2.则=(x B﹣x A,y B﹣y A)=(4,6),∴∵∴∴B点坐标为(5,4).故答案为:(5,4)【点评】本题主要考查两向量间的共线问题.属基础题.15. 已知偶函数()的值域为,则该函数的解析式为▲ .参考答案:16. 函数在上单调递减,则实数a的取值范围是___________.参考答案:略17. 已知四边形ABCD是⊙O的内接梯形,AB∥CD,AB=8cm,CD=6cm,⊙O的半径等于5cm,则梯形ABCD的面积为.参考答案:7cm2或49cm2【考点】圆內接多边形的性质与判定.【专题】计算题;分类讨论;综合法;推理和证明.【分析】过点O作OE⊥AB,E为垂足,OF⊥CD,F为垂足,由勾股定理得OE=3, OF=4,当圆心O在梯形ABCD内部时,EF=3+4=7,当圆心O在梯形ABCD外部时,EF=4﹣3=1,由此能求出梯形ABCD的面积.【解答】解:连接OA,OB,OC,OD,过点O作OE⊥AB,E为垂足,OF⊥CD,F为垂足,E,O,F三点共线.等腰三角形OAB中,AE==4,由勾股定理得,OE==3同理得,OF==4,当圆心O在梯形ABCD内部时,EF=3+4=7,∴梯形ABCD的面积S==49(cm2)当圆心O在梯形ABCD外部时,EF=4﹣3=1,∴梯形ABCD的面积S=(cm2).故答案为:7cm2或49cm2.【点评】本题考查梯形面积的求法,是中档题,解题时要注意勾股定理的合理运用,易错点是容量丢解.三、解答题:本大题共5小题,共72分。
2018-2019学年高一下学期期中考试生物试题(选考班)附答案(20190911035457)
公安县车胤中学2018—2019学年度高一年级下学期期中考试(生物学考)试题卷班级:姓名:一、选择题(每小题3分,共60分)1.在进行豌豆杂交试验时,为避免其自花传粉,孟德尔采取的措施是( )①花蕾期,不去雄蕊②花蕾期,去雄蕊③去雄后,套上纸袋④去雄后,不套纸袋⑤待花成熟时,采集另一株植物的花粉涂在雌蕊的柱头上⑥待花成熟时,拿开纸袋任其在自然状况下传粉受精A.②④⑥ B.①③⑥ C.②③⑤ D.②③⑥2.下列有关相对性状的叙述正确的是( )A.梨的果皮光滑和桃的果皮有毛是相对性状 B.家兔的黑色毛、白色毛和棕色毛是相对性状C.番茄的红色果实和圆形果实是相对性状 D.生物的同一性状的不同表现形式就是相对性状3.番茄果实的颜色由一对遗传因子A、a控制,下表是关于番茄果实颜色的3个杂交实验及其结果。
下列分析正确的是( )实验组亲本表现型F1的表现型和植株数目红果黄果1 红果×黄果492 5012 红果×黄果997 03 红果×红果 1 511 508A.番茄的果色中,黄色为显性性状B.实验组1的亲本遗传因子组成:红果为AA,黄果为aaC.实验组2的后代中红果番茄均为杂合子D.实验组3的后代中黄果番茄的遗传因子组成可能是Aa或AA4.关于一对相对性状遗传的叙述,正确的是( )A.若仅考虑一对等位基因,在一个生物群体中,有4种交配类型B.自交是鉴别和保留纯合的抗锈病(显性)小麦最简便易行的方法C.F2的表现型比为3∶1的结果最能说明基因分离定律的实质D.通过测交可以推测被测个体产生配子的种类和数量5.孟德尔主要通过豌豆的杂交实验,总结出了遗传学的两大基本规律,以下与之有关的说法中,正确的是( )A.孟德尔在实验中所运用的科学研究方法叫作假说验证法B.豌豆是闭花受粉的植物,所以杂交实验不需要套袋C.F1均表现为高茎,所以高茎是显性性状,矮茎是隐性性状D.孟德尔通过豌豆杂交实验提出了基因的概念6.下列关于杂合子和纯合子的叙述中,正确的是( )A.杂合子的双亲中至少一方是杂合子 B.纯合子的细胞中无控制相对性状的基因C.纯合子测交后代都是纯合子 D.杂合子自交后代都是杂合子7.将基因型为Aa的玉米自交一代的种子全部种下,待其长成幼苗,人工去掉隐性个体,并分成①、②两组,①组全部让其自交;②组让其自由传粉。
湖北省公安县车胤中学2018-2019学年高一下学期期中考试历史试题(学考班)附答案
车胤中学2018-2019学年度下学期高一期中考试历史试卷(学考)注意事项:1.答题前填写好自己的姓名、班级、考号等信息2.请将答案正确填写在答题卡上第I卷(选择题)一、单选题(40*2.5=100分)1.下列工具,所使用的行业与其他三个不同的是A.耧车 B.水排 C.桔槔 D.翻车2.下列图片能反映唐代生产力发展水平的是A. B. C. D.3.严国海在《20世纪20 、30 年代中国民族企业发展的宏观环境》一文中提到:“国民政府颁布了《华侨回国兴办实业奖励办法》。
至1936年,共核发民丰造纸厂船牌卷烟纸等专利证书共69 件。
”这说明对该时期民族企业发展起到重要作用的是A.政府举措 B.社会思潮 C.观念转变 D.反帝运动4.我国的二十四节气一直流传至今,主要原因在于它有利于农事安排。
由此可以推断,影响农耕文明的一个重要因素是A.地质特点 B.气候条件C.地理环境 D.生产经验5.下图是创作于1854年的版画《英格兰的“白人奴隶”》,反映了纺织厂里发生的现象。
据此可以判断A.奴隶贸易对欧洲影响较深远B.工业革命提高妇女政治地位C.英国工人阶级工作环境恶劣D.此画体现了现代主义的风格6.甲午中日战争失败以后,李鸿章伤感地说:“我办了一辈子事,练兵也,海军也,都是纸糊的老虎……不过勉强涂饰。
虚有其表。
”从他的话中,我们更能看出洋务运动是一次A.使中国走上富强道路的运动B.失败了的封建统治者的自救运动C.失败了的抗击外来侵略运动D.资产阶级的民主革命运动7.1914年至1922年,(荣氏)无锡茂新系统发展为4个厂,上海福新系统发展为8个厂,日产面粉8.6万余包,占当时全国面粉总产量的29%。
荣氏企业在当时稳操“面粉大王”的桂冠。
在此期间荣氏企业得以发展的国际因素是A.兴办实业的热情 B.政府的扶植奖励C.提倡国货运动的促进 D.西方列强放松了对中国市场的控制8.劳斯莱斯公司CEO约翰·罗斯于90年代曾说:“10年前公司98%的技术研究工作是在英国完成的,而现在这个比例不足40%,很多工作是在德国、印度、新加坡等完成的。
18学年高一下学期第一次双周考英语试题(附答案)
荆州中学2017—2018学年春季高一年级第一次考试英语试题时间:120分钟满分:150分第I卷第一部分:听力(共两节,满分20分)做题时,先将答案划在试卷上。
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分,满分5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
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。
1.What does the woman ask the man to do?A.Go to work on time.B.Get his watch repaired.C.Have a talk with his boss.2.What does the woman want to do?A.Find a parking lot.B.Get back her driving permit.C.Rent a cat.3.Where are the speakers now?A.In a church.B.In a shop.C.In a restaurant.4.What does the woman mean?A.She wants to talk with the man.B.She doesn’t want to sit with Alan.C.She doesn’t like the movie.5.Where does the conversation take place?A.In a flower shop.B.In a garden.C.In a hotel.第二节(共15小题;每小题1分,满分15分)听下面5段对话或独白。
每段对话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。
湖北省公安县车胤中学17—18学年下学期高一期中考试物理试题(附答案)$862800
公安县车胤中学2017—2018学年度下学期高一(2017级)期中物理试卷一、选择题(每小题只有一个....选项是正确的,每小题5分,共60分)1、下列几种运动中,不属于...匀变速运动的是()A.斜下抛运动 B.斜上抛运动 C.平抛运动 D.匀速圆周运动2、从地面上方某点,将一小球以5m/s的初速度沿水平方向抛出。
小球经过1s落地。
不计空气阻力,g =10m/s2。
则可求出()A.小球抛出时离地面的高度是5 mB.小球从抛出点到落地点的位移大小是5mC.小球落地时的速度大小是15m/sD.小球落地时的速度方向与水平地面成300角3、一质点在xoy平面内运动的轨迹如图所示,已知质点在x方向的分运动是匀速运动,则关于质点在y方向的分运动的描述正确的是()A.匀速运动B.先加速运动后减速运动C.先减速运动后加速运动D.先匀速运动后加速运动4、如图所示,a、b、c三个相同的小球,a从光滑斜面顶端由静止开始自由下滑,同时b、c从同一高度分别开始自由下落和平抛.下列说法正确的有()A.它们的落地时间相同B.运动过程中重力做的功相等C.它们的落地时的动能相同D.它们落地时重力的瞬时功率相等5、如图所示,A、B、C三颗人造地球卫星绕地球做匀速圆周运动,已知m A=m B<m C,则三颗卫星 ( )A.线速度大小关系:v A<v B=v CB.加速度大小关系:a A>a B=a CC.向心力大小关系:F A=F B<F CD .周期关系:T A >T B =T C6、如图所示,甲、乙、丙三个轮子依靠摩擦传动,相互之间不打滑,其半径分别为r 1、r 2、r 3.若甲轮的角速度为ω1,则丙轮的角速度为( )A .311r r ω B .133r r ωC .213r r ω D .211r r ω7、水平面上甲、乙两物体,在某时刻动能相同,它们仅在摩擦力作用下停下来,如图所示的a 、b 分别表示甲、乙两物体的动能E 和位移s 的图象,则( ) ①若甲、乙两物体与水平面动摩擦因数相同,则甲的质量较大②若甲、乙两物体与水平面动摩擦因数相同,则乙的质量较大 ③若甲、乙质量相同,则甲与地面间的动摩擦因数较大 ④若甲、乙质量相同,则乙与地面间的动摩擦因数较大 以上说法正确的是( ) A .①③ B .②③ C .①④ D .②④8、如图所示,在抗洪救灾中,一架直升机通过绳索,用恒力F 竖直向上拉起一个漂在水面上的木箱,使其由水面开始加速上升到某一高度,若考虑空气阻力而不考虑空气浮力,则在此过程中,以下说法不正确...的有( )A .力F 和阻力的合力所做的功等于木箱机械能的增量B .木箱克服重力所做的功等于重力势能的增量C .力F 、重力、阻力,三者合力所做的功等于木箱动能的增量D .力F 所做功减去克服阻力所做的功等于重力势能的增量9、下列物体中,机械能不守恒...的是 ( ) A .做平抛运动的物体B .轻绳的一端系一小球,绳的另一端固定,使小球在竖直平面内做圆周运动C .光滑曲面上自由运动的物体D .以g 54的加速度竖直向上做匀减速运动的物体10.如图所示,在倾角为θ的斜面上的A 点,以水平速度v 0抛出一个小球,不计空气阻力,则小球落到斜面上的B 点时所用的时间为( )A.2v 0sin θgB.2v 0tan θgC.v 0sin θgD.v 0tan θg11、如图所示,长为L 1的橡皮条与长为L 2的细绳的一端都固定在O 点,另一端分别系两球A 和B ,A 和B 的质量相等,现将两绳都拉至水平位置,由静止释放放,摆至最低点时,橡皮条和细绳长度恰好相等,若不计橡皮条和细绳的质量,两球经最低点速度相比 ( )A .A 球大B .B 球大C .两球一样大D .条件不足,无法比较12、如图所示,轻弹簧一端固定在挡板上。
福建省宁德市博雅培文学校2023-2024学年高一6月月考英语试题
福建省宁德市博雅培文学校2023-2024学年高一6月月考英语试题一、阅读理解Volunteer Art &Architecture Tour Guide for Boston Public Library, Copley SquareThe goal is to generate public interest in the history, art, and architecture of Boston Public Library, including its special collections and exhibitions at the Central Library in Copley Square.ROLE AND EXPECTATIONS●To conduct public and private group tours of the Central Library’s art, architecture, and exhibitions, answering questions from groups and recording attendance statistics after tours conclude.●To continue to inform oneself of the art, architecture, history, holdings, and exhibitions of Boston Public Library.QUALIFICATIONS● Interest in history, art, and architecture in general, and of Boston Public Library in particular.● Confidence in addressing and presenting information to large groups; prior guiding or public speaking experience desirable.●A strong command of the English language is required, and fluency in other languages is highly preferred.TRAININGAccepted candidates will be asked to attend tour guide training meetings. New guides are expected to complete training around four months. Progress evaluations will be ongoing throughout the training period, and continue through the first six months of working as a full guide.REQUIREMENTS●Minimum commitment of two tours per month (or 24 tours per year).●Commitment to attending tour guide meetings and enrichment programs for continuing education.REVIEWRegular assessments and evaluations will be conducted based on the above criteria to ensure that volunteers meet the necessary qualifications.Interested candidates should complete the application form below and send it to *************.1.What does a volunteer tour guide need to do after tours?A.Ensure safety of the artworks.B.Maintain cleanness of the hall.C.Document the numbers of visitors.D.Answer questions about qualifications.2.How long will the progress evaluations last?A.4 months.B.6 months.C.10 months.D.12 months. 3.Which will result in a poor review of the position?A.Insufficient (不足的) working hours.B.Absence of a second language.C.Little relevant volunteer experience.D.Limited knowledge about exhibitions.Many years ago, my dad was facing a serious heart condition. He was unable to do a steady job. He fell suddenly ill and had to be admitted to the hospital.He wanted to do something to keep himself busy, so he decided to volunteer at the local children’s hospital. My dad loved kids. It was the perfect job for him. He ended up working with the seriously ill children. He would talk, play, and do arts with them.One of his kids was a girl with a rare disease that paralyzed (瘫痪) her from the neck down. She couldn’t do anything, and she was very depressed. My dad decided to try to help her. He started visiting her in her room, bringing paints, brushes and paper. He stood the paper up, put the paintbrush in his mouth and began to paint. He didn’t use his hands at all. All the while he would tell her, “See, you can do anything you set your mind to.”At the end of the day, she began to paint using her mouth, and she and my dad became friends. Soon after, the little girl was sent home because the doctors felt there was nothing else they could do for her. My dad also left thechildren’s hospital for a little while because he became ill. Some time later after my dad had recovered and returned to work, in came the little girl who had been paralyzed and only this time she was walking. She ran straight over to my dad and hugged him really tight. She gave him a picture she had done using her hands. At the bottom it read: “Thank you for helping me walk.”My dad would cry every time he told us this story and so would we. He would say sometimes love is more powerful than doctor, and my dad—who died just a few months after the little girl gave the picture—loved every single child in that hospital.4.The author’s father worked at the local hospital to_______________.A.make his serious heart condition less serious B.keep himself occupied and pleased C.realize his childhood dream D.earn money to pay for treatment5.How did the author’s father help the paralyzed little girl?A.He helped her practice walking.B.He visited her and made a toy for her.C.He showed her she could still do things.D.He painted special pictures for her. 6.According to Paragraph 3, the paralyzed girl _______________.A.eventually became a unique painterB.was sent home and never seen againC.gradually recovered and walkedD.sent the author’s dad a picture painted with her mouth7.What message does the passage mainly convey?A.It’s better to give than to receive.B.A sick person should not focus on his disease.C.Volunteering is a worthwhile thing to do.D.Love can sometimes bring great results.Plastic is everywhere, from the Arctic ice to vital organs in the human body. In fact, previous estimates suggest that the average person swallows a credit card-worth of microscopic plastic particles(颗粒) every week. But new research shows that this could actually be an understatement.Microplastics are plastics smaller than 5 millimeters, found in industrial waste, beauty products, and formed during the degradation of larger plastic pieces. Over time, they break downinto even smaller nanoplastics. These tiny particles can pass through our intestines and lungs into our bloodstreams, reaching vital organs like the heart and brain.While the idea of eating plastic is unsettling in itself, the major concern here is that these plastic particles contain chemicals that can interrupt our body’s natural release of hormones, potentially increasing our risk of reproductive disorders and certain cancers. They can also carry toxins(毒素) on their surface like heavy metals.In the past, researchers have shown bottled water can contain tens of thousands of identifiable plastic fragments in a single container. However, until recently, only the larger microplastics were detectable with available measuring tools, leaving the area of nanoplastics largely a mystery.Using Raman microscopy (显微镜学), capable of detecting particles down to the size of a flu virus, the team measured an average of 240, 000 particles of plastic per liter of bottled water, 90 percent of which were nanoplastics, a revelation 10 to 100 times larger than previous estimates.These plastics likely originate from the bottle material, filters used to “purify” the water, and the source water itself. “It is not totally unexpected to find so much of this stuff, ” the study’s lead author, Columbia graduate student Naixin Qian, said in a statement. His team hopes to expand their research into tap water and other water sources to better inform our exposure to these potentially dangerous particles. “The idea is that the smaller things get, the more of them I reveal, ” he added.8.What is the primary focus of the new research?A.The presence of plastic particles.B.The use of plastic in everyday products.C.The detection methods for microplastics.D.The potential risks of nanoplastics to human. 9.What is the advantage of Raman microscopy?A.Finding the source of plastic particles.B.Helping to cure the deadly flu virus.C.Detecting the smaller plastic particles.D.Improving the quality of bottled water. 10.Why will the team expand their research into tap water?A.To focus on areas with higher plastic pollution.B.To be aware of the dangerous particles in daily life.C.To further measure the types of particles in tap water.D.To detect the smaller plastic particles in industrial areas.11.What is Qian’s attitude towards his research?A.Skeptical.B.Objective.C.Conservative.D.Positive.Why was school created? 12 Especially on test days, many students wonder exactly why they’re being subjected to such terrible and unusual punishment!If you’re honest with yourself, though, you know what a great place school is. 13 . Sure, tests can be stressful, but think of how boring life would be if you didn’t get to learn new things and see other people so often!Schools are not a new invention. You may have seen some old one-room schoolhouses that have been around for several hundred years or more. 14 .In fact, education dates back to the very first humans ever to live on Earth. Why? To survive, every generation has found it necessary to pass on its knowledge, skills, values, and traditions to the next generation. How can they do this? Education! Each subsequent generation (后代) must be taught these things.15 They educated young people within the family unit. Over time, however, populations grew and societies formed.Rather than every family being responsible for education, people soon found out that it would be easier and more efficient to have a small group of adults teach a larger group of children.16 .A.In this way, the idea of school was born.B.The earliest schools, though, date back thousands of years.C.At that time, schools focused on reading, writing, and maths.D.Ancient schools weren’t like the schools we know today, though.E.We’re sure that’s a question that every student asks from time to time.F.The earliest human beings didn’t need schools to pass along information.G.You have fun, learn all kinds of interesting things, and get to spend time with your friends.二、完形填空Forty years ago, Mrs. Austen was my first-grade teacher, an old lady with salt-and-pepperhair, firm but kind, patient and 17 . She let us bake gingerbread men in the school cafeteria — a delightful 18 that amazed me. And whenever we read the “Jack and Janet” books, she wouldn’t let the other kids 19 my classmate Jack or me.But I came to truly 20 Mrs. Austen when a dress-up day was 21 . On that day, we were encouraged to wear clothes in the 22 of the mid-1800s. My mother, a superb tailor, made a pioneer-style dress for me. I was so proud 23 it as I walked to school that day. When I got there, however, I was the only one in my class who had dressed up, feeling kind of 24 . Mrs. Austen oohed and aahed over my 25 and then went to her office. It didn’t take long before she 26 in a frontier-style dress! She explained that she had asked her husband to bring the costume.We moved away two years later, and I still 27 that I never told Mrs. Austen how 28 I was to her, a teacher who went out of her way, and even 29 her husband’s help, to keep a little girl from feeling30 . I had many wonderful teachers throughout the years, but Mrs. Austen has always held a(n) 31 place in my heart.17.A.neighborly B.cowardly C.grandmotherly D.scholarly 18.A.treat B.view C.journey D.story19.A.call on B.work through C.laugh at D.engage with 20.A.remember B.appreciate C.believe D.approach 21.A.advanced B.canceled C.established D.scheduled 22.A.exhibition B.style C.course D.show 23.A.making B.holding C.wearing D.owning 24.A.contented B.frightened C.disappointed D.embarrassed 25.A.recipe B.present C.costume D.material 26.A.reappeared B.displayed C.judged D.modeled 27.A.assume B.regret C.imagine D.pretend 28.A.dedicated B.significant C.attached D.grateful 29.A.sought B.responded C.offered D.declined 30.A.at ease B.in order C.out of place D.under control 31.A.typical B.special C.obvious D.ideal三、完成句子32.She wants to (贷款上学) for school . (根据汉语提示完成句子) 33.When we help someone, should we expect to get something (作为回报)?(根据汉语提示完成句子)34.Have you ever (和...打赌) your best friends? (根据汉语提示完成句子)35.It’s not so difficult. (事实上), it’s quite easy. (根据汉语提示完成句子)36.The train ( 火车就快开了) and I was not even on the platform. (根据汉语提示完成句子)37.(既然那样), we won’t go overseas for our further study. (根据汉语提示完成句子)38.Your daughter took my car (未经许可) . (根据汉语提示完成句子) 39.(说实话), I doubt whether they will finish the hard task in two days. (根据汉语提示完成句子)40.On my way to the museum, I met one of my teachers (偶然地).(根据汉语提示完成句子)41.Who is (值班) today? (根据汉语提示完成句子)四、语法填空课文语法填空Henry was walking along the street 42 (hold) the bank note in his hand. His coat was 43 (wear) in several places. He saw a sign for a tailor’s shop. Henry walked into the shop and wanted to buy a suit coat. One clerk treated him in 44 rude manner. Then another clerk came up to serve him. Finally, Henry took a suit coat. When he said he had no any small change and 45 (pay) it in a month, the clerk tried to control his anger, saying, “I suppose a gentleman like you only 46 (carry) very large bills.” Henry told him not to judge people 47 their clothes and that he just didn’t want to cause him trouble with a large note. The clerk said no trouble. So Henry gave the bank note to the clerk. The clerk was so 48(astonish) that he dropped Henry’s coat. He folded the bill and 49 (slow) unfolded it again, as if looking at something he couldn’t believe was there .Seeing the scene, the owner asked the clerk to give Henry the change quickly. However, when he saw the bank note, he changed his attitude and took Henry to another part of the shop, 50 there was a wide range of 51 (option) for Henry to choose from.五、书面表达52.最近,你班同学就“Is it better to employ self-study or teamwork study?”进行了讨论,大家观点不一。
最新-湖北省公安县博雅中学高一数学测试题 精品
第一章 集合测试一、选择题(共12小题,每题5分,四个选项中只有一个符合要求)1.下列选项中元素的全体可以组成集合的是 ( )A.学校篮球水平较高的学生B.校园中长的高大的树木C.2018年所有的欧盟国家D.中国经济发达的城市2.方程组错误!未找到引用源。
的解构成的集合是( ) A .错误!未找到引用源。
B .错误!未找到引用源。
C .(1,1) D .错误!未找到引用源。
3.已知集合A ={a ,b ,c },下列可以作为集合A 的子集的是 ( )A. aB. {a ,c }C. {a ,e }D.{a ,b ,c ,d }4.下列图形中,表示错误!未找到引用源。
的是 ( )5.下列表述正确的是 ( )A.错误!未找到引用源。
B. 错误!未找到引用源。
C. 错误!未找到引用源。
D. 错误!未找到引用源。
6、设集合A ={x|x 参加自由泳的运动员},B ={x|x 参加蛙泳的运动员},对于“既参加自由泳又参加蛙泳的运动员”用集合运算表示为 ( )A.A∩BB.A 错误!未找到引用源。
BC.A∪BD.A 错误!未找到引用源。
B7.集合A={x 错误!未找到引用源。
} ,B={错误!未找到引用源。
} ,C={错误!未找到引用源。
}又错误!未找到引用源。
则有 ( )A.(a+b )错误!未找到引用源。
AB. (a+b) 错误!未找到引用源。
BC.(a+b) 错误!未找到引用源。
C D. (a+b) 错误!未找到引用源。
A 、B 、C 任一个8.集合A ={1,2,x },集合B ={2,4,5},若错误!未找到引用源。
={1,2,3,4,5},则x =( )A. 1B. 3C. 4D. 59.满足条件{1,2,3}错误!未找到引用源。
M 错误!未找到引用源。
{1,2,3,4,5,6}的集合M 的个数是( )A. 8B. 7C. 6D. 510.全集U = {1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 }, A= {3 ,4 ,5 }, B= {1 ,3 ,6 },那么集合 { 2 ,7 ,8}是 ( )A. 错误!未找到引用源。
2018-2019学年湖北省荆州市博雅中学高一英语下学期期末试题
2018-2019学年湖北省荆州市博雅中学高一英语下学期期末试题一、选择题1. He made up his mind ____his life to preventing pollution______ happily.A. to devote; to liveB. to devote; from livingC. to devoting; to liveD. to devoting; from living参考答案:A2. Before Liam crossed the street, he stood watching for the traffic ________ to change.A. signalB. sightC. ruleD. post参考答案:A考查名词辨析。
句意:Liam在穿过街道前,他站着等交通信号灯变绿。
A. signal信号;B. sight视野;C. rule规则;D. post职位。
根据语境,故选A.3. ---Excuse me. Can you tell me what “DIY” stands for?---It’s for “Do it yourself”.A. shortB. fitC. suitableD. famous参考答案:A4. Our neighbor offered to look after our baby while we were away, ____ was very kind of her.A. itB. thatC. whichD. such参考答案:C5. I didn’t like the color1 of the coat my mother bought me, so she went back to _______ it for another one.A. replaceB. exchangeC. affordD. measure参考答案:B6. .I didn’t like the way ________ he looked at me.A.in which B.that C./ D.all the above参考答案:D7. The computers that we use at the moment are old and slow, and they often ________ and are not connected to the Internet.A. breakB. crashC. contractD. react参考答案:B略8. Father ______ goes to the gym with us although he dislikes going there.A. hardlyB. seldomC. sometimesD. never参考答案:C9. Good friends usually share the same interest and agree _____ most things but sometimes they also disagree _____ each other _____somethingA. on; with; toB. to; with; aboutC. on; with; onD. with; with; on参考答案:C10. An excellent teacher is believed to be one who cares about his students but asks for nothing __________.A. in turnB. in shortC. in returnD. in general参考答案:C试题分析:考查介词短语辨析。
2018-2019湖北省公安县高一下学期期中考试化学试题(选考班)
2018-2019学年湖北省公安县车胤中学高一下学期期中考试化学试题(选考班)可能用到的相对原子质量(H:1; C:12; N:14;O:16; F:19; Na:23;Mg:24;Al:27; S:32;Cl:35.5; K:39; Ca:40; Fe:56; Cu:64; Zn:65; Br:80;Ag:108; I:127;Ba:137 )一、单选题(本大题共20小题,每小题3分共60.0分)1.0.1mol某金属单质与足量的盐酸反应,放出1.12LH2(标准状况),并转变为具有Ar原子的电子层结构的离子,该金属元素在元素周期表中的位置是()A. 第三周期第IA族B. 第四周期第IA族C. 第三周期第ⅡA族D. 第四周期第ⅡA族2.铅蓄电池的两极分别为Pb、,电解液为硫酸,工作时的反应为,下面结论正确的是()A.Pb为正极,被氧化B. 溶液的pH不断减小C. 只向处移动D. 电解液密度不断减小3.下列关于化学键的说法正确的是 ( )4.①含有金属元素的化合物一定是离子化合物5.②第ⅠA族和第ⅦA族原子化合时,一定生成离子键6.③由非金属元素形成的化合物一定不是离子化合物7.④活泼金属与非金属化合时,能形成离子键8.⑤含有离子键的化合物一定是离子化合物9.⑥离子化合物中可能同时含有离子键和共价键10.⑦非极性键只存在于双原子单质分子中11.⑧不同元素组成的多原子分子中的化学键一定都为极性键A. B. C. D.12.既有离子键又有共价键的化合物是()A. Na2OB. H2O2C. CH4D. NaOH13.下列反应符合如图所示的反应是()14.A. 金属钠与水的反应15.B. 氢气燃烧16.C. 浓硫酸的稀释17.D. Ba(OH)2•8H2O和NH4Cl(固体)混合18.19.某小组为研究电化学原理,设计如图装置.下列叙述不正确的是()20.A. a和b不连接时,铁片上会有金属铜析出21.B. a 和 b 用导线连接时,铜片上发生的反应为:Cu2++2e-=Cu22.C. 无论a和b是否连接,铁片均会溶解23.D. a和b用导线连接后,Fe片上发生还原反应,溶液中的Cu2+向铜电极移动24.25.在温度不变下,在恒容的容器中进行下列反应:N2O4(g)=2NO2(g),若N2O4的浓度由0.1mol•L-1降到0.07mol•L-1需要15s,那么N2O4的浓度由0.07mol•L-1降到0.05mol•L-1所需的反应时间()A. 等于5sB. 等于10sC. 小于10sD. 大于10s26.将4mol甲烷与氯气发生取代反应,待反应完全后测知四种取代物物质的量相同,测消耗的氯气有()A. 2molB. 10molC. 7.5molD. 6mol27.在2A+B⇌3C+4D反应中,表示该反应速率最快的是()A. v(A)=0.5 mol•L-1•s-1B. v(B)=0.3 mol•L-1•s-1C. v(C)=0.8 mol•L-1•s-1D. v(D)=30 mol•L-1•min-110.下列有关说法正确的是( )A. 石墨和金刚石互为同位素B. 乙烷和丙烷互为同素异形体C. 正丁烷与异丁烷互为同分异构体D. 12C和13C互为同系物11.反应C(s)+H2O(g)⇌CO(g)+H2(g)在一可变容积的密闭容器中进行,下列条件的改变对其反应速率几乎无影响的是()①增加C的量②将容器的体积缩小一半③保持体积不变,充入N2使体系压强增大④保持压强不变,充入N2使容器体积变大.A.①④B. ②③C. ①③D. ②④12.下列过程中,只破坏共价键的是()A. 酒精溶于水B. HCl溶于水得盐酸C. 将Na2SO4熔融呈液态D. 从NH4HCO3中闻到了刺激性气味13.金刚石和石墨是碳元素的两种结构不同的单质.在100kPa时,1mol石墨转化为金刚石,要吸收1.9kJ的热能.下列说法不正确的是()A. 石墨比金刚石稳定B. 金刚石和石墨的物理性质相同C. 1mol金刚石比1mol石墨的总能量高D. 1mol金刚石完全燃烧释放的能量比1mol石墨完全燃烧释放的能量多14.在2L容积不变的容器中,发生N2+3H2⇌2NH3的反应.现通入4mol H2和4mol N2,10s 内用H2表示的反应速率为0.12mol/(L•s),则10s后容器中N2的物质的量是()A. 1.6molB. 2.8molC. 3.2molD. 3.6mol15.能说明氯元素的非金属性比硫元素强的事实是①Cl2与H2S溶液发生置换反应②受热时H2S能分解,HCl则不能③单质硫可在空气中燃烧,Cl2不能④HCl是强酸,H2S是弱酸A. ①④B. ①②C. ③④D. ②④16.下列说法中正确的一组是()A. H2和D2互为同位素B. 和互为同分异构体C. 正丁烷和异戊烷是同系物D. 和不是同一种物质17.下列化学用语的使用正确的是()A. N2的结构式:N≡NB. CO2的比例模型:C. 氯化氢的电子式:D. F的原子结构示意图:18.一个原电池的总反应的离子方程式是Fe+Cu2+=Fe2++Cu,该反应的原电池组成正确的是()A B C D正极Fe Fe Cu Cu负极Cu Cu Fe Fe电解质溶液CuSO4H2SO4CuCl2酒精A. AB.BC. CD. D19.反应在一个密闭容器中进行,下列措施可以使反应速率增大的是()①增加少量②升高温度③体积不变,再通入④缩小体积增大压强⑤体积不变,再通入He ⑥压强不变,再通入HeA.①②③⑥B. ①②③④C. ②③④⑤D.②③④20.Mg-AgCl电池是一种能被海水激活的一次性贮备电池,电池反应方程式为:2AgCl+Mg=Mg2++2Ag+2Cl-.有关该电池的说法正确的是()A.Mg为电池的正极B. 负极反应为AgCl+e-=Ag+Cl-C. 不能被KCl 溶液激活D. 可用于海上应急照明供电二、填空题(本大题共1小题,共10.0分)21.Ⅰ.(1)把一块纯净的锌片插入盛有稀硫酸的烧杯中,可观察到锌片逐渐溶解,并有气泡产生;平行地插入一块铜片(如图甲装置所示),可观察到铜片上___(1分)(填“有”或“没有”)气泡产生;若用导线把锌片和铜片连接起来(如图乙装置所示),可观察到铜片上____(1分)(填“有”或“没有”)气泡产生。
2018-2019湖北省公安县高一下学期期中考试物理试题(选考班)
2018-2019学年湖北省公安县车胤中学高一下学期期中考试物理试题(选考班)考试时间:90分钟;总分:100分一、选择题(共10小题,其中1-7题为单选题,8-10题为多选题.错选或不选得0分,少选得3分。
每小题5分,共50分)1.下列说法正确的是()A.曲线运动速度一定改变 ,加速度一定改变B.不共线的匀速直线运动和匀变速直线运动的合运动可能是直线也可能是曲线运动C.平抛运动是匀变速运动D.匀速圆周运动是匀变速运动2.下列关于匀速圆周运动的向心加速度的说法中,不正确...的是( )A.它的方向始终与线速度方向垂直;B.它的大小是不断变化的;C.它描述了线速度方向变化的快慢;D.它的大小可以通过公式来计算3.一质量为2.0×103kg的汽车在水平公路上行驶,路面对轮胎的径向最大静摩擦力为1.4×104N,当汽车经过半径为80m的弯道时,下列判断正确的是()A.汽车转弯时所受的力有重力、弹力、摩擦力和向心力B.汽车转弯的速度为20m/s时所需的向心力为1.4×104NC.汽车转弯的速度为30m/s时汽车不会发生侧滑D.汽车能安全转弯的向心加速度不超过7.0m/s24.“神舟九号”已于2012年6月与在轨的“天宫一号”实现交会对接。
如图所示,“神舟九号”在飞行过程中,沿曲线从M点向N点飞行的过程中,速度逐渐减小。
在此过程中“神舟九号”所受合力方向可能是下列图中的( )A. B. C. D.5.物体以初速度v0水平抛出,当抛出后竖直方向速度和水平方向速度相等时水平方向位移和竖直方向位移之比是A.2∶1B.4∶1C.3∶1D.1∶26.A、B、C三个物体放在旋转的水平圆台上,A的质量是2m,B、C质量各为m;C离轴心的距离是2r,A、B离轴心距离为r,当圆台匀速转动时,A、B、C都没发生滑动,则A、B、C 三个物体的线速度、角速度、向心加速度和向心力的大小关系正确的是()A. B.C. D.7.如图所示,长为L的细线一端固定,另一端系一质量为m的小球。
2018-2019学年湖南省常德市博雅中学高三英语月考试题
2018-2019学年湖南省常德市博雅中学高三英语月考试题一、选择题1. I bought this computer because it was ______ I could find.A. the lightestB. the lighterC. the lightD. lighter参考答案:A2. During the terrible storm last night, a ________ tree fell over a ________ car and caused ________.A. falling; sleeping; a great deal of damageB. fallen; slept; a great deal of damageC. falling; slept; great damageD. falling; sleeping; great damages参考答案:A3. Bank statement helps you__________ where your money is going.A. keep track ofB. put up withC. come up withD. fit in with参考答案:A4. It is well known that knowledge is ____ treasure house, but practice is ____key to it.A. a; theB. the; theC. a; xD. x; the参考答案:A略5. Many things _____ impossible in the past have already come true today.A. consideringB. to considerC. being consideredD. considered参考答案:D6. Besides his own work, the class master does everything he can do for the class, hoping his efforts will not be in the end.A.in forceB.in effectC.in needD.in vain参考答案:D考查介词短语。
2018届高一年下学期期初考试答题卡及答案.doc
65 ___________ .70 订线 内 请 n|r > 拦 61 62 63 64 66 _______ ______ 67 _______ _______ 68 ______ ______69 第I 卷第II 卷 总分 I 听力 II 阅读 III 完形 IV 填空 V 改错 VI 作文第I 卷(共115分)信息匹配(共5小题,每小题2分,满分10分)36 37 38 39 40第四部分写作(共两节,满分35分) 第一节短文改错(共10小题;每小题1分,满分10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。
文中共有10 处语言错误,每句中最多有两处。
每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(A ),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:每处错误及其修改均仅限一词;只允许修改10处,多者(从第11处起)不计分。
People have always been interested in bees. This interest may have begun with the honey what bees make. In the fact, it has found that people have been eating honey for thousand of years. In the more recently past, people were interested in the way bees made honey. They admired the way bees seemed to working so hard. Some languages even developed expressions about people working like bees. InEnglish, for example, we talk with a "busy bee". Now scientists has a new reason to be interested in 线 bees. We have discovered that bees are able to communicate with each other. Research has revealedsome surprised facts about this, but there are still many mysteries.第二节 书面表达(满分25分)(提示:请勿超出边框作答!)装• 第II 卷(非选择题,共35分) 语法填空(共10小题,每小题L5分,满分南安一中2015〜2016学年度下学期期初考答案听力1-5ABABC 6-10BAACB 11-15ACCBB 16-20AACBC阅读理解21-23CCB 24-27DBBC 28〜31 BAAC 32-35CACD七选五:36-40 FBAEG完形填空41-45 ACBDB 46-50 CCADA 51-55 BADBD 56-60CACBD语法填空:61. lives 62. reliable 63. waiting 64. had stopped 65. to find66. the 67. annoyed短文改错:68.it 69. if 70. so1. what — that / which2.去掉the (fact)3. found 前加been 4. thousand 一thousands 5. recently 一recent 6. working 一work7. with 一about(busybees)10. surprised 一surprisingPossible version:8. has 一have9. We 一They1 would like to tell you that our school has worked out a new program.The aims of the program are to make our school more beautiful, to make the air cleaner and fresher, and to turn our school into a better place for us to study and live in.According to the program, we will plant different kinds of trees and flowers in and around our school. A botanical garden will be built for us to visit and have practical lessons, where we will learn much that we cannot learn in class. Besides, we are to build a small garden in which we can do some reading and take a rest. Whafs more, some statues of famous people will be set up to encourage us to work harder. How do you think about this program? I'm confident that when everything is finished according to the program, our school will look wonderful.Welcome to our school if you have the chance to come.Yours,Li Hua。
湖北省荆州市博雅中学2018-2019学年高三英语下学期期末试卷含解析
湖北省荆州市博雅中学2018-2019学年高三英语下学期期末试卷含解析一、选择题1. ﹣I had a fever the day before the exam,______ I failed.﹣What a pity!Good luck next time.()A.or B.so C.for D.but参考答案:B"or"或者,否则;"so"因此(表示结果);"for"因为;"but"但是(表示转折).根据句意.考试前一天我发烧了,因此没有及格.表示的是结果,故选B.2. —Some toys have very small parts that children swallow.—Yeah, and others have an unpleasant smell of plastics.A.couldB. mustC.shouldD.shall参考答案:A3. The noise from the top floor,loud and constant,of the meeting-room_________ can be clearly heard in our classroom.A.to decorate B.having been decoratedC.being decorated D.decorating参考答案:C4. The beautiful mountain village we spent our holiday last year is located inis now part of Hefei.A. which; whereB. where; whatC. that; whatD. when; which参考答案:5. --- I can't stand the loud music any longer. Could you turn down your radio?--- Pardon? What _______?A.had you said B.did you say C.have you said D.are you saying参考答案:B6. —Do you need any help, Lucy?—Yes. The job is _________ I could do myself.A. less thanB. more thanC. no more thanD. not more than参考答案:B考查比较级。
公安县博雅中学2018年高一年级6月半月考
公安县博雅中学2018年高中一年级6月半月考化 学 试 题考试时间:90分钟相对原子质量:K-39 Ca-40 Na-23 Mg-24 Al-27 Zn-65 Fe-56 Cu-64 H-1 C-12 O-16 S-32 Cl-35.5 N-14第I 卷(选择题)一、选择题(每小题只有一个正确选项。
3分×16=48分)第Ⅰ卷 (选择题,共48分)本卷包括16个小题,每小题3分,共计48分,每小题只有一个选项符合题意。
1、某反应的反应过程中能量变化如图所示(图中E 1表示正反应的活化能,E 2表示逆反应的活化能)。
下列有关叙述正确的是( ) A .该反应为放热反应 B .催化剂能改变该反应的焓变C .催化剂能降低该反应的活化能D .逆反应的活化能大于正反应的活化能 2、对于可逆反应3H 2+N 22NH 3,下列措施能使反应物中活化分子百分数、化学反应速率和化学平衡常数都变化的是( )A .增大压强B .充入更多N 2C .使用高效催化剂D .降低温度 3、下列关于S 、SO 2、H2SO 4的叙述中,正确的是( ) A .硫是一种易溶于水的黄色晶体 B .SO 2溶于水生成H 2SO 4C .用氢氧化钠溶液处理含有SO 2的尾气D .浓H 2SO 4不稳定,光照易分解 4.相同条件下,下列各反应均为放热反应,放出的热量最少的是( ) A .2A(l)+B(l)===2C(g) B .2A(g)+B(g)===2C(g) C .2A(l)+B(l)===2C(l) D .2A(g)+B(g)===2C(l) 5、下列叙述正确的是 ( ) A .NH 3易液化,液氨常用作制冷剂B .与金属反应时,稀HNO 3可能被还原为更低价态,则稀HNO 3氧化性强于浓HNO 3C .氨盐受热易分解,因此贮存氨态氮肥时要密封保存,不需放在阴凉通风处D .稀HNO 3和活泼金属反应时主要得到氢气6、自来水常用适量氯气杀菌消毒,不法商贩用自来水冒充纯净水牟取暴利,可用化学试剂鉴别真伪,该试剂是( )A .酚酞试液B .氯化钡溶液C .氢氧化钠溶液D .硝酸银溶液 7、下列有关叙述正确的是A .元素性质呈周期性变化的根本原因是元素化合价呈周期性变化B .BF 3和CO 2分子中所有原子均满足最外层为8电子结构C .已知114号元素的一种核素的质量数为298,则该元素的相对原子质量为298D .[14NH 3T] +中,电子数、质子数、中子数之比为10∶11∶98、将 4 mol A 气体和 2 mol B 气体在 2 L 的容器中混合并在一定条件下发生如下反应: 2A(g)+B(g)2C(g),若经 2 s (秒)后测得 C 的浓度为 0.6 mol ·L -1 ,现有下列几种说法,其中正确的是( )A .用物质A 表示的反应的平均速率为0.3 mol ·L -1·s -1B .用物质B 表示的反应的平均速率为0.6 mol ·L -1·s -1C .2 s 时物质A 的转化率为70%D .2 s 时物质B 的浓度为1.4 mol ·L -1910、设N A 为阿伏加德罗常数的数值,下列说法正确的是( ) A .标准状况下,22.4L 苯含有约N A 个C 6H 6分子 B .1mol Na 与足量乙醇完全反应,失去2N A 电子 C .1 mol 苯分子中含有C===C 双键数为3N A D .常温常压下,8gCH 4含有5N A 个电子11、化学与工农业生产、人类生活密切相关,下列说法中正确的是( ) A .14C 可用于文物年代的鉴定,14C 与12C 互为同素异形体 B .葡萄糖注射液不能产生丁达尔效应,不属于胶体 C .汽油、柴油和植物油都是碳氢化合物D .“春蚕到死丝方尽,蜡炬成灰泪始干”中的“丝”和“泪”分别是指纤维素和油脂12、 “绿色化学”对化学反应提出了“原子经济”(原子节约)的新概念及要求,理想原子经济反应是原料中的原子全部转化成所需要的产物,不产生副产物,实现零排放。
湖南省常德市博雅中学2018年高一数学文联考试卷含解析
湖南省常德市博雅中学2018年高一数学文联考试卷含解析一、选择题:本大题共10小题,每小题5分,共50分。
在每小题给出的四个选项中,只有是一个符合题目要求的1. 一平面截球O得到半径为cm的圆面,球心到这个平面的距离是2cm,则球O的体积是( ).A.12π cm3B.36π cm3 C.c m3 D.cm3参考答案:B略2. 已知,则函数的最小值为()A. -2B.C. 1D. 2参考答案:A【分析】先分离,再根据基本不等式求最值,即得结果.【详解】,当且仅当,即时,等号成立. 选A.3. 已知一空间几何体的三视图如题图所示,其中正视图与左视图都是全等的等腰梯形,则该几何体的体积为()A.17 B.C.D.18参考答案:B【考点】由三视图求面积、体积.【分析】由已知中的三视图,可知该几何体是一个四棱台切去一个三棱锥所得的几何体,分别求出相应的体积,相减可得答案.【解答】解:由已知中的三视图,可知该几何体是一个四棱台切去一个三棱锥所得的几何体,棱台的上下底面的棱长为2和4,故棱台的上下底面的面积为4和16,侧高为,故棱台的高h==2,故棱台的体积为:=,棱锥的底面是棱台上底面的一半,故底面面积为2,高为2,故棱锥的体积为:×2×2=,故组合体的体积V=﹣=,故选:B4. 已知点D为等腰直角三角形ABC斜边AB的中点,则下列各式中不恒成立的是()A.B.C.D.参考答案:D5. 已知△ABC的一个内角为,并且三边的长构成一个公差为4的等差数列,则△ABC 的面积为()A. 15B. 14C.D.参考答案:C6. (5分)已知两组样本数据x1,x2,…x n的平均数为h,y1,y2,…y m的平均数为k,则把两组数据合并成一组以后,这组样本的平均数为()A.B.C.D.参考答案:B考点:众数、中位数、平均数.专题:计算题.分析:首先根据所给的两组数据的个数和平均数做出这两组数据的和,把两组数据合成一组以后,数据的个数是m+n,要求两组数据合成一组的平均数,只要用两组数据的和除以数据的个数即可.解答:∵样本数据x1,x2,…x n的平均数为h,y1,y2,…y m的平均数为k,∴第一组数据的和是nh,第二组数据的和是mk,把两组数据合成一组以后,数据的个数是m+n,所有数据的和是nh+mk,∴这组数据的平均数是,故选B.点评:本题考查两组数据的平均数,考查平均数的做法和意义,实际上这是一个加权平均数的做法,本题是一个基础题.7. ,( )A. B.C. D.参考答案:C8. 已知向量,满足?=0,||=1,||=2,则|2﹣|=()A.0 B.C.4 D.8参考答案:B【考点】93:向量的模.【分析】利用题中条件,把所求|2|平方再开方即可【解答】解:∵ =0,||=1,||=2,∴|2|====2故选B.9. 是( )A.第一象限B. 第二象限C. 第三象限 D. 第四象限参考答案:B10. 已知函数,若且,则的取值范围是()A BC D参考答案:A二、填空题:本大题共7小题,每小题4分,共28分11. 我国古代数学名著《算法统宗》中有如下问题:“远望巍巍塔七层,红光点点倍加增,共灯三百八十一,请问尖头几盏灯?”意思是:一座7层塔共挂了381盏灯,且相邻两层中的下一层灯数是上一层灯数的2倍,则塔的顶层灯数为_____________参考答案:3分析:设塔的顶层共有a1盏灯,则数列{a n}公比为2的等比数列,利用等比数列前n项和公式能求出结果.详解: 设塔的顶层共有a1盏灯,则数列{a n}公比为2的等比数列,∴S7==381,解得a1=3.故答案为:3.点睛:本题考查了等比数列的通项公式与求和公式,考查了推理能力与计算能力.12. 函数的定义域为,若存在闭区间,使得函数满足:①在内是单调函数;②在上的值域为,则称区间为的“倍值区间”。
2018-2019学年湖北省荆州市博雅中学高一生物期末试卷含解析
2018-2019学年湖北省荆州市博雅中学高一生物期末试卷含解析一、选择题(本题共40小题,每小题1.5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. 下列有关细胞的认识中,正确的是A.细胞是一切生物的结构和功能单位B.一只草履虫就是一个细胞C.精子不具有细胞的结构,只有形成受精卵,才具有细胞的结构和功能D.SARS病毒不具有细胞的结构,所以不具有生命特征参考答案:B2. 有关基因、DNA、蛋白质、性状的叙述,不正确的是()A.基因控制性状是通过控制蛋白质的合成来实现的B.基因是有遗传效应的DNA片段C.白化病症状的出现,是由于基因直接控制合成异常的色素D.基因与性状之间不是简单的一对一关系参考答案:C3. 牡丹花色种类多种多样,其中白色的不含花青素,深红色的含花青素最多,花青素含量多少决定着花瓣颜色的深浅,由两对独立遗传的基因(A和a,B和b)所控制;显性基因A和B可以使花青素含量增加,两者增加量相等,并且可以累加。
若一深红色牡丹同一白色牡丹杂交,就能得到中等红色的个体,若这些个体自交其子代将出现花色的种类和比例分别是A.3种;9∶6∶1 B.4种;9∶3∶3∶1C.5种;1∶4∶6∶4∶1 D.6种;1∶4∶3∶3∶4∶1参考答案:C4. 下列传染病的病原体中,能够独立完成生命活动的是A.艾滋病病原体(HIV)B.流行性感冒病原体(流感病毒)C.非典型性肺炎病原体(SARS病毒)D.肺结核的病原体(结核杆菌)参考答案:D5. 下列基因型的个体中,只能产生一种配子的是A.ddTt B.DDtt C.DdTt D.DDTt参考答案:B6. 孟德尔对于遗传学的重要贡献之一是利用设计巧妙的实验否定了融合遗传方式。
为了验证孟德尔遗传方式的正确性,有人用一株开红花的烟草和一株开白花的烟草作为亲本进行实验。
在下列预期结果中,支持孟德尔遗传方式而否定融合遗传方式的是A.红花亲本与白花亲本杂交的F1代全为红花B.红花亲本与白花亲本杂交的F1代全为粉红花C.红花亲本与白花亲本杂交的F2代按照一定比例出现花色分离D.红花亲本杂交,子代全为红花;白花亲本自交,子代全为白花参考答案:A7. 溶酶体具有细胞内消化功能,其内部水解酶的最适pH在5.0左右。
2018年安徽省安庆市博雅高级中学高三物理下学期期末试题含解析
2018年安徽省安庆市博雅高级中学高三物理下学期期末试题含解析一、选择题:本题共5小题,每小题3分,共计15分.每小题只有一个选项符合题意1. (单选)贝克勒尔发现天然放射现象,揭示了( )A. 原子不可再分B. 原子的核式结构C. 原子核还可再分D. 原子核由质子和中子组成参考答案:C2. 如图所示的虚线框为一长方形区域,该区域内有一垂直于纸面向里的匀强磁场,一束电子以不同的速率从O点垂直于磁场、沿图中方向射入磁场后,分别从a、b、c、d四点射出磁场,比较它们在磁场中的运动时间ta、tb、tc、td,其大小关系是()A.ta<tb<tc<tdB.ta=tb=tc=tdC.ta=tb<tc<tdD.ta=tb>tc>td参考答案:D3. 如图所示,小物体A沿高为h,倾角为的光滑斜面以初速度从顶端滑到底端,而相同的物体B以同样大小的初速度从同等高度竖直上抛,则()A.两物体落地时速度大小相等B.两物体落地时,重力的瞬时功率相等C.从开始运动至落地过程中,重力对它们做功相等D.两物体从开始至落地,动能变化量相等参考答案:ACD两个小球在运动的过程中都是只有重力做功,机械能守恒,所以根据机械能守恒可知两物体落地时速率相同,动能变化量相等,故A、D正确.重力做功只与初末位置有关,物体的起点和终点的高度差一样,所以重力做的功相同,所以C正确.由于两个物体落地时的速度的方向不同,由瞬时功率的公式可以知道,重力的瞬时功率不相同,所以B错误.4. 下列关于物理思想方法的说法中正确的是A.伽利略否定“力是维持物体运动的原因”利用了理想斜面实验B.在探究加速度、力和质量三者之间关系时,应用了控制变量法C.在推导匀变速运动位移公式时,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,采用了微元法D.在不需要考虑物体本身的大小和形状时,用质点来代替物体的方法叫假设法参考答案:ABC5. (单选)以下有关物理学概念或物理学史说法正确的有()A.行星绕恒星运动轨道为圆形,则它运动的周期平方与轨道半径的三次方之比为常数,此常数的大小与恒星的质量和行星的速度有关B.匀速圆周运动是速度大小不变的匀变速曲线运动,速度方向始终为轨迹上该点的切线方向C.牛顿发现的万有引力定律,卡文迪许用实验方法测出万有引力恒量的数值,从而使万有引力定律有了真正的实用价值D.奥斯特发现了电与磁间的关系,即电流的周围存在着磁场;同时他通过实验发现了磁也能产生电,即电磁感应现象参考答案:C二、填空题:本题共8小题,每小题2分,共计16分6. 在将空气压缩装入气瓶的过程中,温度保持不变,外界做了24 kJ的功。
湖北省公安县车胤中学2018-2019学年高一下学期期中考试地理试题(学考班)附答案
绝密★启用前车胤中学2018-2019学年度下学期高一学考考试地理试题考试范围:必修2第1章——第四章考试时间:60分钟总分:100分注意事项:1.答题前填写好自己的姓名、班级、考号等信息;2.请将答案正确填写在答题卡上。
一、单选题(每小题2分,30题共60分)下图为人口迁移的模式图,据图完成1~2题。
1. 属于国际人口迁移的是( )A.①②B.②③C.①③D.③④2.不属于人口迁移的是( )A.④⑤B.⑥⑦C.⑤⑦D.④⑥大别山区某国家级贫困县农民可分为跨村种田大户农民、种植自家承包地农民、本地务工务农兼业农民和常年外出务工农民等类型。
该县以当地优势资源为基础的加工企业在县城活力较弱,但在中心集镇活力较强。
下图示意该县居民点的等级结构。
据此回答下列3-5题。
3.与县城相比,中心集镇以当地优势资源为基础的加工企业活力较强的主要原因是()。
A. 基础设施较完善B. 更接近消费市场C. 资金供应较充裕D. 更易招募劳动力4. 面向某类型农民的需求,有专家建议在该县推进“村—中心集镇双栖”居住模式。
这种模式旨在方便该类型农民()A. 从事商业活动B. 留守子女上学C. 兼顾务工务农D.扩大种田规模5. 为了实施乡村振兴战略,带领农民脱贫致富,该国家级贫困县可采取的有效措施是()①推广大规模机械化种植②鼓励外出务工农民回乡创业③引导传统农民多种经营④推进中心集镇房地产开发A. ①②B. ②③C. ③④D. ①④读某城市土地利用付租能力距离递减示意图,完成下列6-7题。
6. 图中交通便捷程度最好的区域是()A. ①区B. ②区C. ③区D. ④区7. ③处最有可能形成的功能区是()A. 商业中心B. 低级住宅区C. 工业区D. 文化区右图是城市地租等高线分布图,该图表示地租立体分布状况(单位:元/平方米),读图回答第8题。
8.符合A、D、F、G四处地租高低排列顺序的选项是:()A、B、C、D、9.下图为是城市化进程示意图,下列国家当前城市化所处阶段正确的是()A.美国处于a阶段B.英国处于b阶段C.中国处于b阶段D.印度处于c阶段下图是江西省泰和县千烟洲立体农业示意图。
荆州市2018年高一语文学年考试题
荆州市2018年高中一年级学年质量检查语文试题注意事项:1. 答题前,考生务必将自己的姓名、准考证号填写在试题卷和答题卡上。
2. 选择题的作答: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。
写在试题卷、草稿纸和答题卡上非答题区域均无效。
3. 非选择题的作答:用0.5毫米黑色的签字笔直接答在答题卡上对应的答题区域内。
写在试题卷、草稿纸和答题卡上非答题区域均无效。
4. 考试结束后,监考人员将答题卡收回,试题卷由学生保存。
本科目考试时间:2018年6月29日下午14∶30~17∶00一、现代文阅读(36分)(一)论述类文本阅读(本题共3小题,9分)阅读下面的文宇,完成1~3题。
从政治地理角度来看,适宜建都的地点一般有几个层次的考虑,其中有两个层次最为要紧:一是在全国领土范围内的地理区位,二是建都地点本身的地理环境,包括自然条件与人文基础。
在第一层次中的考虑又分为两方面,一是选择全国的地理中心或是有利的控内御外的位置,二是与统治集团的发源地是否相近的原则。
当然从最简单最普通的思路而言,作为一国的政治中心应当位于国家的地理中心位置上,以便于对全国进行行政管理。
唐代以前中国的政治经济重心在黄河流域,比较大范围的天下之中就在三河地区,从政治地理上来说就是所谓核心区。
而从三河缩小到一个地点的天下之中则是洛阳。
所以,从西周到唐代,都有在洛阳建都的事实或打算。
虽然王朝领土范围的中心位置是建都的理想位置,但有时却不一定是最合适的现实位置。
因为除了理想以外,政治军事经济因素要起着实际的作用。
为了王朝的长治久安,一方面要控制内部的敌对势力,另一方面要抵御外部的侵略行为。
在这种考量下,首都就可能设在有所偏向的位置而不是地理中心。
具体而言,在唐代以前,适合这一要求的是西安一带。
西安所处的关中平原,对山东地区(即崤山以东黄河下游地区)而言是居高临下,起着明显的控制作用。
《盐铁论·非鞅》所说:“诸侯敛衽,西面而向风。