四川省营山县回龙中学高三12月检测 (2)

四川省营山县回龙中学2015-2016学年高一12月检测物理试题一、单选题1．质量为m=1kg的物体静止在水平面上,物体与水平面之间的动摩擦因数为μ=0.2。

现对物体施加一个大小变化、方向不变的水平力F,为使物体在3s时间内发生的位移最大,力F 的大小应如下面的哪一幅图所示【答案】D【解析】物体与地面间的滑动摩擦力F f=μmg=2N,A、C中第1s内F=1N,物体不会动,比较可知这两种情况下3s内的位移一定小于D中3s内的位移。

B中第1s内加速、第2s内减速、第3s内加速,而D中前2s内一直加速,分析可知B中3s内的位移也比D中3s内的位移小,选项ABC错误，D正确。

2．如图所示,两根等长的轻绳将日光灯悬挂在天花板上,两绳与竖直方向的夹角都为45°,日光灯保持水平,所受重力为G,左右两绳的拉力大小分别为A.G和GB.G和GC.G和GD.G和G【答案】B【解析】日光灯受重力G及两根绳子的拉力F T作用而处于平衡状态,其受力如图所示。

由于两个拉力的夹角成直角,则由力的平行四边形定则可知G=,故F T=G,选项B正确，ACD错误。

3．远程洲际导弹在飞行过程中,如果不考虑其质量的变化,下列说法中正确的是A.导弹重力的大小和方向都变化B.导弹重力的大小和方向都不变化C.导弹重力的大小变化,方向不变化D.导弹重力的大小不变化,方向变化【答案】A【解析】远程洲际导弹因飞行距离大,在飞行过程中,其所在处的重力加速度的大小和方向均发生变化,因此其重力的大小和方向都变化,选项A正确,B、C、D错误。

4．如图所示，物体B的上表面水平，B上面载着物体A，当它们一起沿固定斜面C匀速下滑的过程中物体A受力是A.只受重力B.只受重力和支持力C.有重力、支持力和摩擦力D.有重力、支持力、摩擦力和斜面对它的弹力【答案】B【解析】由于A物体随着B物体匀速运动，对A进行受力分析，只受到重力及支持力，没有与B物体有相对运动或相对运动的趋势，因而没有摩擦力，选项B正确，ACD错误。

四川省营山县回龙中学2016届高三12月检测政治试卷注意事项：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：共12题每题4分共48分1．黄金具有商品和金融资产两种属性，其价格是在多种因素综合影响、共同作用下形成的，各种力量相互影响、相互作用，通过影响供求关系而形成黄金价格的波动和变化。

下列关于影响国际黄金价格变动分析合理的是①欧美主要国家的通胀率上升—纸币的购买力削弱—黄金的吸引力上升②美元在外汇市场上走势强劲—投资美元升值机会增大—黄金的吸引力上升③现代高新技术产业对黄金的需求增加—黄金的开采成本下降—黄金价格下跌④全球股市剧烈震荡—避险情绪升温—黄金的投资价值上升A.①②B.②③C.③④D.①④【答案】D【解析】本题考查影响价格的因素的知识。

美元在外汇市场上走势强劲，投资美元升值机会增大，人们会更多的投资美元，黄金的吸引力会下降，②分析错误。

现代高新技术产业对黄金的需求增加，黄金价格会上升，而不是下跌，③错误。

①④是对影响国际黄金价格变动的合理分析，符合题意。

本题选D。

2．2015年，我国各地推动农民专业合作社发展。

某地通过“资源变股权、资金变股金、农民变股民”的“三变”方式，推动农村资产股份化、土地股权化，采取存量折股、土地入股等多种形式，将这些资源转换为企业、合作社或其他经济组织的股权。

这一做法①是以公司股份制形式替代家庭承包责任制②促进了混合所有制经济在农村进一步发展③通过土地经营权流转增加了农民非劳动收入④通过整合农业生产要素促进了农业产业化经营A.①②B.③④C.①④D.②③【答案】B【解析】本题考查我国的分配制度的知识。

材料中某地的做法通过整合农业生产要素促进了农业产业化经营，通过土地经营权流转增加了农民非劳动收入，③④符合题意。

家庭承包责任制是我国农村集体经济的经营体制，不可能被公司股份制形式替代，①错误。

农民专业合作社属于集体经济，不是混合所有制经济，②不符合题意。

四川省营山县回龙中学2015-2016学年高二12月检测数学试题一、单选题1．下列命题中的假命题是A. B.C.x,D.x,>02．若在边长为4的等边三角形的边上任取一点,则使得的概率为A. B. C. D.3．如图,四边形ABCD为矩形,AB＝,BC＝1,以A为圆心,1为半径作四分之一个圆弧DE,在∠DAB 内任作射线AP,则射线AP与线段BC有公共点的概率为A. B. C. D.4．已知等比数列满足,则A. B. C. D.5．在Δ中,若则Δ的面积是A. B.C. D.6．定义域为的函数满足时,若时,恒成立,则实数的取值范围是A. B.C. D.7．一个多面体的三视图如图所示,则该多面体的表面积为A.21+B.18+C.21D.188．已知正四棱锥S-ABCD的侧棱长与底面边长都相等,E是SB的中点,则AE、SD所成的角的余弦值为A. B. C. D.9．若实数满足,则的最小值为A.-2B.-1C.1D.210．若都是锐角,且,则A. B. C.或 D.或11．如图,棱长为1的正方体ABCD－A1B1C1D1中,P为线段A1B上的动点,则下列结论错误的是A.DC1⊥D1PB.若直线l是平面ABCD内的直线,直线m是平面DD1C1C内的直线,若l与m相交,则交点一定在直线CD上C.若P为A1B上动点,则AP＋PD1的最小值为D.∠PAD1最小为12．在数列中, =1,,则的值为A.99B.49C.102D.101二、填空题13．已知双曲线的离心率为2,焦点与椭圆的焦点相同,那么双曲线的渐近线方程为.14．已知,,则的取值范围是__________.15．在△ABC中,若,则最大角的余弦是__________.16．已知定义域为的函数满足:①对任意的实数,都有;②当时,.记函数,则函数在区间内的零点个数是_____.三、解答题17．在中,内角对边的边长分别是,已知．(Ⅰ)若的面积等于,求；(Ⅱ)若,求的面积．18．已知,数列是首项为,公比也为的等比数列,记.(1)求数列的前项和;(2)若数列中每一项总小于它后面的项,求的取值范围.19．已知函数(1)当时,求函数的单调区间;(2)若函数对恒成立,求实数的取值范围.20．如图,四棱锥S-ABCD中,SD底面ABCD,AB//DC,AD DC,AB=AD=1,DC=SD=2,E为棱SB上的一点,二面角D-EC-B等于90º.(Ⅰ)证明: DE⊥平面SBC;(Ⅱ)证明:SE=2EB;(Ⅲ)求二面角A-DE-C的余弦值.21．在平面直角坐标系中,曲线与两坐标轴的交点都在圆C上.(1)求圆C的方程;(2)判断直线与圆C的位置关系.22．若不等式的解集是.(1)求的值;(2)求不等式的解集.参考答案1-5 CDBAC 6-10 DACBA 11-12 CD13.14. (－,)15.16. 1017. (Ⅰ)由余弦定理及已知条件得,,又因为的面积等于,所以,得．联立方程组解得．(Ⅱ)由题意得,即,当时,,当时,得,由正弦定理得,联立方程组解得．所以的面积．18. (1)两式作差得:所以(2)由当当所以或又,所以或19. (1),,(x>0)f’(x),当0<x<2时, f’(x)>0,f(x)在(0,2)单调递增;当x>2时, f’(x)<0,f(x)在单调递减;所以函数的单调递增区间是(0,2),单调递减区间是. (2)由题意得对恒成立, 设,则求导得,当时,若,则,所以在单调递减成立,得;当时,,在单调递增,所以存在,使,则不成立;当时,,则在上单调递减,单调递增,则存在,有, 所以不成立,综上得.20. (Ⅰ)连接BD,取DC的中点G,连接BG,由此知即Δ为直角三角形,故.又,所以,.作,故平面EDC,内的两条相交直线都垂直. 所以,DE⊥平面SBC(Ⅱ) 由,,所以,.(Ⅲ)由知又.故Δ为等腰三角形.取中点F,连接,则.连接,则.所以,是二面角的平面角.连接AG,AG= ,所以,二面角的余弦值为.21. (1)由已知可知曲线与坐标轴的交点坐标为(1,0),(3,0),(0,3),且都在圆C上，由圆的性质可得圆心坐标为(2,b),则圆的半径为r,r2=(1-2)2+(0-b)2=(0-2)2+(3-b)2,解得b=2，r2=5，则圆C的方程是：；(2)由题意可得,即直线过定点(3,1),显然定点(3, 1)在圆内，所以，直线与圆相交22. (1)依题意,可知方程的两个实数根为和2,由韦达定理得:+2=,解得:－2.(2)－2时不等式等价于即计算得所以解集为。

2020-2021学年四川营山县回龙中学高一12月检测英语试卷学校:___________姓名：___________班级：___________考号：___________一、单项选择1．She is such a good girl _____ we all like.A．whom B．as C．that D．who2．—I’m sorry for breaking the cup.—Oh, —I’ve got plenty.A．forget it B．my pleasureC．help yourself D．pardon me3．He started to study hard and decided to________his whole life to the science. A．ignore B．devote C．prefer D．lead4．―More than fifty students competed ________ each other in the composition competition.―But they coul d only compete________three medals.A．against; with B．against; onC．with; for D．for; for5．—Frequent lack of breakfast does harm to health.—, why do you always do that?A．So what B．If so C．If any D．Even so6．_______nearly all behavior is learned behavior is a basic assumption________has been put forward by the social scientists.A．What ， that B．That ， whatC．What ， what D．That ， that7．The dog had such to its master that it would not leave him, even when he was dead. A．invitation B．attention C．protection D．devotion 8．Tom suggested that we such a meeting, but Jenny insisted that it_________of great importance.A．not hold,should be B．didn't hold,beC．hold, was D．not hold,was9．In the park I saw an old lady I thought was your grandmother. A．who B．whom C．which D．whoever10．He failed in the examination but I don’t think he does care very much,?A．do I B．doesn’t he C．does he D．don’t I 11．“Please close the window,” he said to me. →He ______ me _____ the window.A．said to; to close B．told to; closingC．asked ; to close D．said to; please close12．Up to now the Nepal earthquake coming with the aftershocks _____ huge damage to people of Tibet as well.A．causes B．caused C．have caused D．has caused 13．The book tells stories of the earthquake through the eyes of those lives were affected.A．whose B．that C．who D．which14． an important decision more on emotion than on reason， you will regret it sooner or later.A．Based B．Basing C．Base D．To base15．—What should I wear for the party, darling?—We’re already late!A．Come on! B．Cheer up!C．It’s a long story. D．Don’t mention it.二、完形填空“Where’s the light?” My dad used to ask me that16 when I was little. It’s one of those questions that parents use to 17 how smart their young children are. During my teenage years, my dad 18 told me that he thought I was going to be foolish because I 19at him whenever he asked me where the 20 was.I consider myself to be a “Daddy’s girl”. Dad never21 me, but he did buy me nice things---dolls and shoes---for my birthday. I am now 28, and I 22 live with my parents in Baguio, Philippines. 23 my father is always very busy, we still 24 time with each other. We 25 go for a drive in the country. Most girls of my 26 would rather go out with their friends than be with their family, but my family has always felt a bit 27 Looking at my father now, I can see he is a(n) 28 man. So many difficulties were in his life, but his dream of a better life kept him 29 At 14, he began working at his high school to 30 himself.During his life, my father has overcome a lot of difficulties and he always 31 education. When we were 32 , he would tell my brother and me to seek improvement in ourselvesthrough 33Like a light, he shines with respect, but he sends out the brightest light for 34 our family as a unit with love and faith as its 35 There are times when my dad makes jokes a nd asks me, using my childhood nickname, “Sasi, where’s the light?” I just smile, and point at him.16．A．secret B．address C．way D．question 17．A．look for B．find out C．take in D．give away 18．A．jokingly B．sadly C．surprisingly D．calmly 19．A．shouted B．laughed C．pointed D．knocked 20．A．doll B．gift C．light D．family 21．A．spoiled B．taught C．cheated D．missed 22．A．never B．still C．suddenly D．finally 23．A．Because B．Unless C．When D．Though 24．A．waste B．divide C．gain D．spend 25．A．ever B．even C．later D．soon 26．A．age B．height C．style D．kind 27．A．happy B．puzzled C．different D．strange 28．A．strict B．broadminded C．independent D．easy-going 29．A．going B．coming C．smiling D．waiting 30．A．enjoy B．support C．behave D．control 31．A．worries B．provides C．receives D．values 32．A．young B．helpless C．proud D．busy 33．A．working B．speaking C．learning D．reading 34．A．showing B．keeping C．imagining D．starting 35．A．tool B．basis C．goal D．trick三、阅读选择Finally, I entered the university．Because of my careful savings, I did not have to work during the school year. Then, summer came and it was time to work harder than ever. I continued working as a waitress at night, instructed tennis camps several mornings a week and worked as a secretary for a few hours in the afternoons. I even decided to take a class at a community college. This class at the community college saved me $650. It was an extremely tiringsummer and made me anxious to return to my relatively easy life at the university.During my second and third years of undergraduate schooling, I decided to work about five hours per week in the campus admissions office answering phones. This provided a little spending money and kept me from drawing my savings out. The overall situation looked hopeful as I approached my senior year as long as I could make as much money as I had the previous summer. I wanted to go to Israel to study for 3 weeks, but I hesitated in making this decision because it would cost me $1,600 more to get the credits in Israel. About two weeks later my Mom called to tell me that I had $1,600 in the bank that I had forgotten about! One of my concerns about this trip was not only the cost, but the loss of time to make money; however, I made as much that summer in the ten weeks when I was at home as I had made during the fourteen weeks when I was at home the summer before. The way everything worked together to make this trip possible was one of the most exciting things that have ever happened to me.This experience has shaped me in many important ways. The first thing that I learned was the importance of a strong work ethic. Working long hours did a lot to develop my character and helped me learn the value of a dollar. It also made me learn how to search for creative ways to settle difficult situations.36．Where did the writer probably work part-time before attending the university?A．In the tennis camps B．In a restaurantC．In a company D．In the admissions office37．The writer took a class at a community college mainly because_____.A．summer time was tiringB．life there was relatively easyC．she wanted to save moneyD．it was required by the university38．The writer’s concern about the trip to Israel was that _____.A．her mother would not give her approvalB．she would fail to get credits in IsraelC．$1,600 couldn’t be drawn out in timeD．a summer job would be lost39．The passage is mainly about how the writer _____.A．was shaped by working part-time through collegeB．managed to make full use of her vacationC．was forced to support herself by her motherD．made money on the college campusWhen it comes to cultural heritage protection, the Grand Canal of China is probably the world’s greatest project of its kind. The big inland waterway system in the north-eastern and central eastern plains passes through eight of the country’s present-day provinces.The Canal runs from Beijing in the north to Zhejiang Province in the south. Constructed in sections from the 5th century BC onwards, it was designed as a means of communication in the 7th century AD．The Canal is the world’s greatest civil engineering project before the Industrial Revolution.The Grand Canal reached a peak in the 13th century, providing an inland navigation(航行) network consisting of more than 2,000 kilometers of artificial waterways, linking five of the most important river basins in China, including the Yellow River and the Yangtze. It entered a bid as a UNESCO(联合国教科文组织) cultural heritage site in 2008.The Grand Canal cultural square is located in Beijing’s Tongzhou district. Ever since the Yuan dynasty 800 years ago, the Tongzhou section of the Grand Canal has been the life blood of Beijing. Grain and building materials were all transported to meet the endless demands of the big cities. Even today, the Grand Canal plays a major role in the lives of its citizens."I grew up near the Gran d Canal. In the past the waterway was a lot narrower, but now it’s nice and wide and bridges are built over it. I think if the bid for world heritage status succeeds, it will greatly make Tongzhou more famous in the world, especially with Tongzhou aiming to be a sub-center of the capital Beijing," a citizen said.The result of the bid is set to be released next week, and no doubt it will certainly make it into the history books if the Canal is listed as a world heritage site.40．It can be concluded from the passage that .A．The bid’s result of the Canal will be announced soonB．the Canal is the UNESCO’s newest world heritage siteC．the Canal is to connect Tongzhou with Zhejiang ProvinceD．the Canal will be a bid for a UNESCO cultural heritage site41．The Grand Canal was in the most glorious time .A．when it was aimed as a means of communicationB．when it crossed the Yellow River and the YangtzeC．when it was born about six hundred years laterD．when it was designed as an artificial waterway42．What can we infer by reading the passage?A．Tongzhou used to be the capital of the Yuan dynasty.B．Most citizens living in Tongzhou depend on the Canal.C．Tongzhou will benefit if the Canal is made a heritage site.D．Some citizens think the Canal not to be a cultural heritage item.Think of life as a game in which you are playing with five balls in the air. You name them work, family, health, friends and spirit (精神)and you keep all of them in the air. You will soon understand that work is a rubber ball. If you drop it, it will bounce (弹跳) back.But the other four balls, family, health, friends and spirit, are made of glass. If you drop one of these，it will be broken. They will never be the same. You must understand that and try to have balance in your life. How?Don't look down on your worth by comparing yourself with others. It is because we are different and each of us is special.Don't let other people set goals for you. Only you know what is best for yourself.Don't give up when you still have something to give.____________________________. Don't be afraid of difficulties. It is by taking chances that we learn how to be brave.Don't shut love out of your life by saying it's impossible. The quickest way to receive love is to give it; the fastest way to lose love is to hold it too tightly (紧紧地)；the best way to keep love is to give it wings.Don't run through life so fast that you forget not only where you've been, but also where you are going.Don't be afraid to learn. Knowledge is a treasure (珍宝) you can always carry easily.Don't use time or words carelessly. You can't get them back. Yesterday is history, tomorrow is a mystery (秘密),and today is a gift: that's why we call it "the present". Life is not a competition, but a trip, step by step.43．The passage tells us not to ________ because everyone is special.A．be afraid of difficultiesB．be afraid to learnC．run through life so fastD．compare yourself with others to look down on your worth44．The sentence " Nothing is really over until the moment you stop trying. " means that "________".A．nothing is possibleB．if we don't give up,there is always hopeC．you should learn to give upD．although you try, nothing will change45．Why can't we use time carelessly?A．Because time is too expensive.B．Because time never returns.C．Because we are too poor.D．Because time will get back.46．If you run through life so fast, you will________.A．lose your own treasure that you can always carry easilyB．lose love by holding it too tightlyC．forget not only where you've been, but also where you are goingD．not be afraid of difficulties47．According to the passage, which is the best title?A．Nothing is impossibleB．Glass balls are easy to be brokenC．Things you can't doD．Treat your life in a right waySo you think you know your dog. But how well does your dog know you? She probably recognizes you when she sees you. But can a dog tell by simply looking at you whether you have a happy or an angry expression on your face? Researchers in Austria have taught pet dogs to know the difference.Dogs are very mindful of sound. When dog owners shout or speak in a strong, harsh(刺耳的) voice, dogs often act guilty and quietly move away from the area. Researchers have found that dogs can look at our faces, and tell the difference between a smile and a frown. The animals were able to recognize a look of approval from one of disapproval.Researchers performed a series of experiments. They taught dogs to recognize facial expressions. They showed the dogs two pictures of either the upper of lower half of a p erson’s face. On one picture, the person looked happy. The other appeared angry. The dogs were then shown images of the eyes or mouths of people they had never seen before. They were also shown the left half of the faces used in training. Once the dogs learned to recognize which image was happy or angry, they could easily identify the same expressions in pictures of any face.Corsin Muller, who led the study, says future studies will try to show whether dogs can learn the meaning of facial expressions—for example, whether a frown shows that someone is angry. “What we can say with our study is that they can tell these ones are different. But what we cannot be sure of at this point is what exact meaning they are associating with these different expressions.”“Of course it seems likely that they would associate (联系)some positive meanings with the smiley face and they would associate some rather negative meanings with the angry face. But what exactly they are associating with these expressions we cannot know at t his point.” Corsin says.48．The passage tells us mainly about _____________.A．how dogs communicate with each otherB．What are the best ways to train our dogsC．Why it’s necessary to know our pet dogs wellD．whether dogs can recognize our facial expressions49．We know from the second paragraph that a dog_____________.A．pays little attention to its owner’s looksB．has to be trained to recognize our voicesC．is very sensitive to its owner’s voicesD．will feel guilty if their owner frowns50．Accordi ng to Corsin Muller, it’s been proven that dogs know_____________.A．the exact meaning of a frownB．a frown is an angry expressionC．human looks carry different meaningsD．a smiley face may have negative meanings51．In which part of a website does the text probably appear?A．Technology. B．Education.C．Language. D．Economics.四、七选五七选五How to Avoid Mistakes in the IELTS TestMany students, some with very good English skills, take the academic IELTS (International English Language Testing System) test and fail to achieve the score they expected or hoped for. In order to avoid this, it is important to have an understanding of what you need to do in each part of the exam and have some basic strategies.52．Don’t give very short answersDon’t just answer "yes" or "no" to questions. The examiner needs to hear you speak, so always give extra information.For example, for part 1:Q: Do you have a big family?A: Yes, I do. I have my parents, and I also have three brothers and two sisters. My aunt lives with us as well.53．It can be quite noisy in our house, but it’s still a lot of fun!54．It is important to extend your answers, but at the same time you must be answering the question or talking about things related to the topic. You won’t gain extra marks for talking for the sake of it, if it has nothing to do with what you have been asked!Listen carefullyAlways listen carefully to what the examiner asks you. Again, you aren’t be expected to be talking about something different to what you are asked.55．If you don’t understand a q uestion or you don’t hear it, then ask the examiner to repeat it. There is nothing wrong with needing to do this a few times during the test.Talk for two minutesIt is OK to give extra information, so feel free to tell the examiner everything you can think about the topic.56．You can plan what you say in the 1-minute preparation time and think of what extra information you can give.A．Keep to the topicB．Ask if you don’t understandC．Think carefully before speakD．There is no need to talk too much.E.So I would say that is quite a large family.F.But remember you need to speak fluently and clearly.G.In this article, I will provide you with speaking strategies.五、短文改错57．短文改错After school I went to home for supper. When I got home, I found my mother laying in bed She was ill. Unluckily, my father was away from home in business. "What shall I do?" I thought to me. Since Mother was ill, I must take well care of her. So I decided to try cooking by myself. I did the cooking with great difficulty but it got burnt at last. I had thought Mother would never like. To my joy, Mother praised me for the meat I have cooked. She said, "It tastes delicious. I'm very pleasing with it.” I knew Mother was encouraging us to do more by myself.六、读后续写58．阅读下面两则新闻报道,然后按照要求写一篇150词左右的英语短文。