2014--2015学年度高二年级10月月考试题及参考答案

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2014-2015学年高二10月月考生物试题(卷)及参考答案

2014-2015学年高二10月月考生物试题(卷)及参考答案

合阳中学2013级期10月月考生物试题(卷)及参考答案班级 姓名 考号试题说明:1、本试题题型分为选择题和非选择题。

作答时将选择题答案填涂在答题卡上,非选择题写在答题纸的相应答题区域。

2、本试题分值100分,考试时间90分钟。

第I 卷 选择题(60分)说明:本题共30小题,每小题2分,每题只有一个选项符合题意。

1.在高等动物体内,细胞与内环境之间的物质交换的正确关系是()2.下列关于人体内环境的叙述,正确的是( )A .毛细血管壁细胞的具体内环境是血浆和淋巴B .甲状腺激素、葡萄糖、氧均可以存在于内环境中C .血浆中的蛋白质都可以透过毛细血管壁到达组织液中D .体内细胞只通过内环境就可以与外界环境进行物质交换 3.下列哪些疾病是由内环境稳态的破坏直接引起的( )①血友病 ②色盲 ③糖尿病 ④尿毒症A .①②B .①③C .②④D .③④4.在一简单反射弧中,只有感觉神经元A 和运动神经元B ,则当A 接受刺激后,兴奋的传导方向是( )A .A 的树突→B 的轴突 B .B 的轴突→A 的轴突C .B 的轴突→A 的胞体D .A 的轴突→B 的树突 5.如图为水盐平衡调节机理,请据图判断A 、B 、C 依次是( )A .抗利尿激素 渴觉中枢 肾小管、集合管B .渴觉中枢 抗利尿激素 肾小管、集合管C .抗利尿激素 肾小管、集合管 渴觉中枢D .渴觉中枢 肾小管、集合管 抗利尿激素 6.当人所处的环境温度从25 ℃降到5 ℃时,耗氧量、尿量、抗利尿激素的变化依次为( )A .增加、增加、减少B .减少、减少、增加C .增加、减少、增加D .增加、增加、增加7.右图能表示人体在某种环境条件发生变化时,内环境中某种激素的含量变化。

这种条件变化和激素分别是( )A .食物缺碘 促甲状腺激素释放激素B .饥饿 胰岛素C .寒冷 刺激生长激素分泌D .气温 甲状腺激素8.下列有关学习和记忆的叙述,错误的是 ( ) A.学习和记忆相互联系,不可分割B.学习和记忆涉及脑内神经递质的作用以及某些蛋白质的合成C.记忆是将获得的经验进行贮存和再现D.学习和记忆的中枢位于下丘脑9.含羞草的小叶受到外力触碰会立即闭合,这个过程 ( )A.是反射,是对外界刺激作出的反应B.是反射,具有一定的规律性C.不是反射,没有中枢神经系统的参与D.不是反射,只有人有反射10.如图表示一种中枢神经元的联系方式,若在图中箭头处施一强刺激,则图中a 、b 、c 、d 、e 能检测到兴奋的有几处( )A .2处B .3处C .4处D .5处 11.下列与下丘脑功能无关的是( ) A .能感受渗透压变化 B .是有意识控制排尿的高级中枢C .是水平衡调节中枢D .对垂体某些激素的释放具有调节作用12.右图表示人体生命活动调节过程的示意图,下列说法正确的是( ) A .该图可以表示神经调节的过程B .如果细胞1是垂体细胞,细胞2可以表示甲状腺细胞C .如果细胞1是胰岛B 细胞,则细胞2只能表示肝细胞D .细胞1的分泌物,只能是蛋白质类物质 13.下列关于人体体温调节的叙述正确的是( )A .人体热量只来源于肝脏细胞中有机物的氧化分解放能B .人体在炎热环境中只需通过增加散热来调节体温C .受到寒冷刺激时,人体可通过骨骼肌不自主的战栗增加产热D .人体体温调节的中枢位于大脑皮层14.下图表示人进食后血液中胰岛素和胰高血糖素相对含量的变化,其中两条曲线表示健康人两种激素的变化趋势,另一条曲线表示糖尿病患者胰岛素的变化趋势,下列有关叙述中错误的是( )A.曲线b表示糖尿病患者血液中胰岛素相对含量的变化趋势B.在曲线c上升时,人体下丘脑还可通过有关神经的作用,促进肾上腺素的分泌C.曲线a表示的激素是人体内唯一能降低血糖含量的激素D.人体通过a、b激素的拮抗作用,可使血糖含量维持在相对稳定的水平上15.下列有关人体生命活动调节的叙述中,错误的是 ( )。

湖南省衡阳八中2014-2015学年高二10月月考(六科联赛)英语试题 Word版含答案

湖南省衡阳八中2014-2015学年高二10月月考(六科联赛)英语试题 Word版含答案

高二10月月考(六科联赛)英语试题‘时量:120 分钟满分:100分考生注意:本试卷分为四个部分,包括听力、语言知识运用、阅读理解和书面表达。

考试结束后,将答卷收回。

第一部分:听力技能(共两节,满分20分)第一节听力理解(共15小题;满分15分)Directions: In this section, you’ll hear 6 conversations between 2 speakers. For each conversation, there are several questions and each question is followed by 3 choices. Listen to the conversations carefully and then answer the questions by marking the corresponding letters (A,B or C) on the question booklet.You will hear each conversation TWICE.Conversation 11.What’s the most probable relationship between the two speakers?A. Neighbors.B. Husband and wife.C. Policeman and witness.2. What caused the fire?A. The rubbish.B. The curtains.C. The lamp.Conversation 23.What does the man want to do?A. Get high-speed Internet.B. Open an online shop.C. Have his computer checked.4. When does the man fix for the appointment?A. At 3:00 pm on Friday.B. At 11:00 am on Saturday.C. At 3:00 pm on Saturday.Conversation 35.Where will the two speakers go?A. Bath.B. Wells.C. Stratford.6. How will the two speakers go there?A. By train.B. By bus.C. By car.Conversation 47.How long has Michael Wilson been cooking?A. Since he was twenty years old.B. For about twenty years.C. Since he was a kid.8. What kind of food is popular in Northern Europe?A. Rice.B. Beef.C. Chicken.9. What does Michael Wilson probably use in his dishes?A. Fancy sauces.B. Expensive spices.C. Local fruits and vegetables. Conversation 510. Why does the man need a book?A. To kill time on the plane.B. To learn more about China.C. To read it when he is in China.11. What will the woman do?A. Get the book for the man.B. Tell the man some good books.C. Tell the man how to get the book.12. When will the man leave for China?A. On August 14th.B. On August 15th.C. On August 16th.第二节笔录要点(共5小题;满分5分)Directions: In this section, you will hear a mini-talk. Listen carefully and then fill in the numbered blanks with the information you have got. Fill in each blank with NO MORE THAN THREE WORDS.第二部分:知识运用(共三节,满分30分)第一节单项填空(共10题;满分10分)21. He couldn’t remember when he first listened to Obama’s speech,but he was sure it was________ Monday because everybody was at ________ work.A. /,theB. the, /C. a, /D. /, a22. They ________ on the program for almost one week before I joined them,and now we________ on it as no good results have come out so far.A. had worked,were still workingB. had been working,are still workingC. have been working,have workedD. have been worked,are still working23. When ________ in the sand,the plant grows close to the ground,________ narrow leaves andsmall flowers.A. grown,to haveB. growing,havingC. growing,and haveD. grew,having24. The judge paid no attention to ________ he had just lost his wife.A. thatB. whichC. WhatD. the fact that25. I was fortunate to pick up a wallet ______ on the ground, but unfortunately for me I found mycolor TV set _______ when I got home.A. laying; stealingB. lying; stolenC. lay; stolenD. lying; stealing26. Only after a person has realized the importance of knowledge, ____________.A. he can devote himself to learnB. he may devote himself to learningC. can he devote himself to learnD. can he devote himself to learning27. If I ___________ the doctor’s advice and kept a balanced diet, I wouldn’t be in such a bad shape now.A. followedB. had followedC. should followD. have followed28. I can’t believe that you got fined for speeding. I _________ of you as a careful driver.A. thinkB. thoughtC. have thoughtD. am thinking29. The computer system ________ suddenly while he was searching for information on the Internet.A. broke downB. broke outC. broke upD. broke in.30. Idon’t think Linda could have done such a stupid thing last night,_________?A. d o IB.didn’t sheC. d id sheD.don’t I第二节完型填空1(共12小题;满分12)31. A. shop B. bar C. counter D. car32. A. textbooks B. cards C. keys D. gloves33. A. home B. school C. party D. restaurant34. A. manager B. secretary C. guest D. waiter35. A. slowly B. briefly C. effectively D. successfully36. A. get across B. get around C. get back D. get over37. A. busy B. broken C. full D. ready38. A. take B. repair C. drive D. get39. A. excitement B. anger C. hopelessness D. surprise40. A. offered B. refused C. wanted D. hesitated41. A. wait B. go C. waste D. spend42. A. doubt B. argue C. regret D. realize第三节完型填空2 (共8小题;满分8分)Directions: Complete the following passage by filling in each blank with one word that best fits the context.Only mother’s love is true love. It gives everybody everything in all his life. When you are still43 boy, your mother takes good care of you. In your walking hours, she always holds you in her arms. 44 you are ill, she stops her work right now to look after you day and night but forgets about 45 . When you are growing up day 46 day, she feels very happy. When you are old 47 to go to school, she still looks after you all the time. On clod winter days, she always tells you to put on more clothes. She always stands in the winter waiting for you back from school. When you hurry to leave home for school with little breakfast, she’s always worried 48 you at home. She usually knows about your study and spends much money on your school things. When you do well at school, you 49 see the brightest smile on her face.Mother is always ready to give everything she has to her child, not to receive. 50 true love it is in the world! We will remember mother’s love forever.第三部分:阅读技能(共三节,满分35分)第一节阅读理解(共15题;满分30分)Directions: Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage.AIt was graduation day at the university where I work and a beautiful day quite unlike the first graduation I attended as a young professor.On that cold day years ago, as we watched the students walking into the hall, one of my colleagues turned to me and said, "Graduation will be one of the happiest and one of the saddest time of your life." At my inquiry, he answered, "Because the students you have gotten to know have to leave."As years went by, my previous confusion about my colleague's words no longer existed.When I came across naughty students, I have had to rethink why I chose to be a teacher.It obviously isn't the money.Once a former computer science student of mine called me, asking me if I wanted to have a change.He was working at Nintendo Corporation.His salary was higher than my current one, though I have more education and have worked for over a decade.With my programming skills, he said he could get me hired.I thanked him, but refused his kind offer.A few days before this current graduation, while working on final grades, I found a note a student had slipped in with her homework.She thanked me for being her teacher and said the things she had learned in my class — not about math, but about life — would be things she would remember long after the math skills had faded away.As I finished reading, I remembered why I had become a teacher.Now, on this sunny graduation day, as I again observed the sea of blue hats and gowns, I did so with renewed dedication and a deeper sense of satisfaction — I will always be grateful that I am a teacher.51. Hearing his colleague's description of graduation for the first time, the author .A.quite agreed with his colleague B.was very puzzledC.thought it very funny D.was very sad52.The computer science student called up the author because he .A.wanted to inform the author of his present jobB.tried to persuade the author to work with himC.wanted the author to share his joy and satisfactionD.thought the author wasn't fit to be a teacher53.The underlined part blue hats and gowns refers to .A.university colleagues B.graduates' clothesC.life memories D.decorations in the hall 54.The author wrote this passage to .A.express his devotion to being a teacherB.compare two different graduation ceremoniesC.talk about the meaning of graduationD.give advice on how to be a good teacher55.The reason why he earns less than the computer science student is that .A.he was only a young professorB.he didn't do well in his workC.he taught his students more about life than mathD.salaries for different careers are differentBWhen parents talk about school safety these days, they’re usually referring to the increase in violence(暴力)at schools. But research shows that school-age children are actually nine times more likely to suffer an injury while doing sports than to be the victim of violence while at school. Accidents can be prevented if parents are on the lookout for potential(潜在的)dangers. To help you keep your kids free from harm, here are some safety tips:a. Teach your child never to talk to strangers or accept rides or gifts from strangers. Remember, a stranger is anyone you or your child doesn’t know well or trust.b. Be sure that your child walks to and from school with a sibling, friend or neighbor.c. Teach your kid, whether walking, biking or riding a bus to school , to obey all traffic signals, signs and traffic officers. Remind him to be extra careful in bad weather.d. When driving your kid, deliver and pick them up as close to the school as possible. Don’t leave until they are in the schoolyard or building.e. If your child rides a bike to school, make sure he wears a standard helmet(头盔). Research shows that a helmet can reduce the risk of head injury by 85%.f. Teach your kid to arrive at the bus stop earlier, stay off the street, and wait for the bus to come to a complete stop.g. Be sure that your kid knows his or her home phone number and address, your work number, the number of another trusted adult and how to call 911 for emergencies(紧急情况).56. The underlined word “sibling” probably means “_______”.A. strangerB. neighborC. friendD. brother or sister57. If your kid walks to school, tell him or her to _______.A. wear a helmetB. go alone every dayC. walk as fast as possibleD. be more careful in bad weather58. Which of the following statements is Not True according to the text?A. Kids should be taught never to talk to strangers.B. Kids should obey the traffic rules.C. Kids should be taught to call 911 for anything.D. Kids should stay off the street while waiting for the bus.59. The intended readers of the text are _________.A. teachersB. parentsC. childrenD. officers60. The main purpose of the text is to ________.A. talk about school safetyB. call on readers to fight against school violenceCA cute invention was revealed this month at the International Robot Exhibition (IREX) in Tokyo. It’s called Jukusui-Kun (“deep sleep”in Japanese) ---a robotic pillow in the shape of a polar bear.The pillow is in fact a serious technological innovation hidden under a cute cover. It was developed by a group of scientists and engineers at Tokyo’s Waseda University to help people suffering from snoring (打鼾) and those who live with them. This is how the robotic pillow works: a microphone detects the noise level of the snoring, and if the snoring becomes very loud, which can be the sign of sleep apnea (睡眠窒息), the bear will raise its hand and carefully touch the face of the sleeper, leading to a change in the sleeper’s position without waking him or her up.This is definitely the world’s first anti-snoring machine and an important potential treatment for sleep apnea. This sleeping disorder involves pauses in breathing, and can lead to heart attacks during sleep. In Japan, around 2 million people are struggling with the problem. When a sleeper starts snoring, the sleeper’s blood oxygen level drops. The new device tracks (追踪) the level of oxygen in the sleeper’s blood and wirelessly sends the information to the polar bear. But the only problem is that people not only have to sleep on a bear-shaped pillow with robotic hands, but also have to insert (插入)their hands into a monitor that keeps track of blood oxygen levels. If these levels fall below a certain point, it gives the bear another cue (提示) to lift its hand.The bear is not yet on sale, and it remains to be seen whether a robotic hand reaching up to touch one’s face is any more effective than one’s partner giving one a good shove (推).61. What do we learn from the passage?A. Snoring can cause the blood oxygen to increase.B. The bear pillow will be available worldwide soon.C. A partner’s shove is more effective than the new robot’s touch.D. With this device, the sleeper’s hands can’t move freely while sleeping.62. What do we learn about the robotic bear?A. It’s comfortable to sleep on.B. It stops people snoring by waking them up.C. It’s the first machine made to deal with snoring.D. It uses a monitor to detect the loudness of the snoring.63. We would find the passage in the ________ section of a magazine.A. entertainmentB. lifestyleC. technologyD. fashion64. What’s the author’s attitude to the new device?A. Positive.B. Negative.C. Objective.D. Doubtful.65. What might be the best title for the passage?A. A Useful Robotic Polar BearB. The Disadvantages of SnoringC. The Different Ways to Deal with SnoringD. How New Technology Changes Your Sleep Pattern第二节摘录信息(共5小题;满分5分)Directions: Read the following passage. Complete the diagram by using the information from the passage.Write NO MORE THAN THREE WORDS for each answer.Earthquake experience can be very frightening for anyone. Knowing what to do safely during the earthquake is important. It can help in reducing anxiety and increases the awareness and ability to deal with it properly. No one knows when an earthquake will hit or how damaging it will be. The following are some simple tips that could save your life.Create an earthquake plan, which includes the actions that you and your family will take when the earthquake occurs, and identify “safe zones”within the house to shelter in when an earthquake strikes. Prepare things like high-energy food, flashlight, radio, batteries and bottled water on hand, as during a quake, it is likely that electricity and water will be cut off.I. Importance of earthquake knowledge:* Reducing anxiety* Increasing the awareness and ability to deal with an earthquake properly II. Before an earthquake:* Creating 67* Identifying “safe zones” to shelter in* Preparing things in case of an emergencyIII. 68◆W hen you are indoors:* At home; getting under a large item of furniture and staying in a corner* In a stadium or theatre: staying in your seat and using your arms to protectyour head and neck◆When you are outdoors:* Walking: moving into an open area* Driving: stopping driving and remaining 69 until the shakes pass IV. After an earthquake:* Avoiding using tunnels or bridges* Saving water supplies* Getting emergency instructions and information over the 70* Avoiding using the telephone without emergency calls第四部分:写作(满分15分)目前,购物不一定需要去商场,我们可以在网上购物。

江苏省扬州中学2014-2015学年高二上学期10月月考试卷 英语 Word版含答案

江苏省扬州中学2014-2015学年高二上学期10月月考试卷 英语 Word版含答案

江苏省扬州中学2014-2015年度第一学期月考高二英语试卷2014.10第I卷非选择题(共80分)第一部分:听力(共15题,每小题1分,满分15分)第一节听下面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. How many people are there in the group?A. Two.B. Three.C. Four.2. Why is the man so happy?A. He is in good physical condition.B. He passed his exam with a high score.C. He won a big prize.3. Where might the speakers be?A. In a furniture store.B. In a bakery.C. In an electronics store.4. What does the man want his children to do?A. Take photos.B. Enjoy music.C. Save money.5. What do we know about the man?A. He is unemployed.B. He is afraid of the woman’s boss.C. He likes his present job.第二节听下面5段对话或对白。

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。

听完每段对话或独白钱,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至7题。

6. How did the man know about the Jamesons?A. He played golf with John.B. He used to work with Jenna.C. He happened to meet them while jogging.7. What’s the relationship between the speakers?A. They are old friends.B. They just knew each other at the party.C. The man is the woman’s new colleague.听下面一段对话,回答第8至9题。

河南省洛阳第一高级中学2014-2015学年高二上学期10月月考 数学(文) Word版含答案

河南省洛阳第一高级中学2014-2015学年高二上学期10月月考 数学(文) Word版含答案

高二10月份月考(文)数学试卷考试时间:120分钟一、选择题:本题共12个小题,每小题5分,共60分.在每小题给出的四个选项中,只有一个是符合题目要求的.1.已知数列{}n a 为等差数列,首项11a =,公差3d =,当298n a =时,序号n =.96.99.100.101A B C D2.设ABC ∆的内角,,A B C 所对的边分别为,,a b c . 若()()a b c a b c ab +-++=,则角C =32....4334A B C D ππππ3.在相距2千米的,A B 两点处测量目标C ,若o o 75,60CAB CBA ∠=∠=,则,A C 两点之间的距离是 千米.2C 4.等比数列{}n a 的各项均为正数且475618a a a a +=,则3132310log log log a a a +++=3.12.10.8.2log 5A B C D +5.在ABC ∆中, 角,,A B C 的对边分别是,,a b c ,若o 1,30a b B ==,则A ∠=o o o o o o .30 .60 .60120 .30150A B C D 或或6.在等差数列{}n a 中,35710,2a a a +==,则1a =.5.8.10.14A B C D7.在ABC ∆中,角,,A B C 的对边分别是,,a b c ,若:1:2,:2:3A B a b ∠∠==则cos 2A 的值为2111. . . .3238A B C D8.在等比数列{}n a 中,48,a a 是一元二次方程2430x x -+=的两根,则6a 的值为...3B C D ±9.已知非零向量AB uu u r 与AC uuu r 满足()0||||AB AC BC AB AC +⋅=uu u r uuu r uu u r uuu r uuuu r 且12||||AB AC AB AC ⋅=uu u r uuu ruuu r uuu u r , 则ABC ∆为 .A 等边三角形 .B 直角三角形 .C 等腰非等边三角形 .D 三边均不相等的三角形10.在ABC ∆中, 角,,A B C 的对边分别是,,a b c ,且2cos ,22A c b c+=则ABC ∆的形状是 .A 等腰三角形 .B 等腰直角三角形 .C 直角三角形 .D 等边三角形11.ABC ∆的三内角,,A B C 的对边边长分别为,,a b c ,若,2,45o a x b B ===,且此三角形有两解,则x 的取值范围是) ) A B C D ∞∞12.已知数列{}n a 满足1(1)n a n n =+,其前n 项和为n S ,则满足不等式911n S <的最大正整数n 是.3 .4 .5 .6A B C D二、填空题:本题共4个小题,每小题5分,共20分.13.已知数列{}n a ,若点*(,)()n n a n N ∈在经过点(8,4)的定直线l 上,则数列{}n a 的前15项和为__________.14.在ABC ∆中, 角,,A B C 的对边分别是,,a b c ,若1,,a b =成等差数列,则ABC ∆的面积为______________.15.在ABC ∆中,内角,,A B C 所对的边分别是,,a b c .已知12b c a -=,2sin 3sin B C =,则c o s A 的值为_________.16. 在ABC V 中,60,B AC ==2AB BC +的最大值为 .三、解答题:本大题共6个小题,共70分,解答题应写出文字说明、证明过程或演算步骤. 17.(本小题满分10分)已知等差数列{a n }中,a 1=1,a 3=-3. (1)求数列{a n }的通项公式;(2)若数列{a n }的前k 项和S k =-35,求k 的值.18.(本小题满分12分)在ABC ∆中,角,,A B C 的对边分别是,,a b c ,且a c >.已知12,cos 3BA BC B ⋅==,3b =. (1)求a 和c 的值; (2)求cos C 的值.19. (本小题满分12分)设数列{a n }的前n 项积为T n ,T n =1-a n ,(1)证明⎩⎨⎧⎭⎬⎫1T n 是等差数列;(2)求数列⎩⎨⎧⎭⎬⎫a n T n 的前n 项和S n .20. (本小题满分12分)在ABC ∆中,角,,A B C 的对边分别是,,a b c ,设S 为ABC ∆的面积,且222).S a b c =+- (1)求角C 的大小;(2)当cos cos A B +取得最大值时,判断ABC ∆的形状.21. (本小题满分12分)等差数列{}n a 满足94S S =且121-=a ○1、求通项公式na ,前n 项和公式nS○2、求数列{}n a 的前n 项和nT22.(本小题满分12分)在ABC ∆中,角,,A B C 的对边分别是,,a b c .已知(,cos )m a B =,(,cos )n b A =,且//,m n m n ≠.(1)若sin sin A B +=,求A 的值; (2)若ABC ∆的外接圆半径为1,且abs a b =+,求s 的取值范围.数学试卷参考答案一、选择题二、填空题 13.60 14.15. 34 16. 三、解答题17. 解:(1)设等差数列{a n }的公差为d ,则a n =a 1+(n -1)d .由a 1=1,a 3=-3,可得1+2d =-3,解得d =-2. 从而a n =1+(n -1)×(-2)=3-2n . (2)由(1)可知a n =3-2n , 所以S n =n [1+-2n 2=2n -n 2.由S k =-35,可得2k -k 2=-35, 即k 2-2k -35=0,解得k =7或k =-5. 又k ∈N *,故k =7.18. (1) 由2BA BC ⋅=得cos 2ca B =, ……2分1c o s ,63B a c =∴=. ……3分 由余弦定理得2222cos b a c ac B =+-, ……4分223,13b a c =∴+=.解22136a c ac ⎧+=⎨=⎩得23a c =⎧⎨=⎩或32a c =⎧⎨=⎩ ……6分因为,3,2a c a c >∴==. ……7分(2) 在ABC ∆中,sin B ===. ……8分由正弦定理得sin 2sin 339c B C b ==⨯=. ……10分,a b c C =>∴为锐角,7cos 9C ===. ……12分 19. 解:(1)证明:由T n =1-a n 得,当n ≥2时,T n =1-T nT n -1,两边同除以T n 得1T n -1T n -1=1.∵T 1=1-a 1=a 1, 故a 1=12,1T 1=1a 1=2.∴⎩⎨⎧⎭⎬⎫1T n 是首项为2,公差为1的等差数列. (2)由(1)知1T n =n +1,则T n =1n +1,从而a n =1-T n =n n +1.故a nT n=n .∴数列⎩⎨⎧⎭⎬⎫a n T n 是首项为1,公差为1的等差数列.∴S n =nn +2.20. (1)由题意可得1sin 2cos ,2ab C ab C =所以tan C =因为0,C π<<所以.3C π=……5分 (2) 2cos cos cos cos()cos cos()3A B A C A A A ππ+=+--=+-11cos cos cos sin()226A A A A A A π=-=+=+. ……8分250,3666A A ππππ<<∴<+<, 3A π∴=时,62A ππ+=, ……10分cos cos A B +取得最大值1,此时ABC ∆为正三角形. ……12分21. 222(1)32,13(2)7,138,1384n n n n a n S n nn T n nn T n n =-=-≤=-+≥=-+22.(1)(,cos )m a B =,(,cos )n b A =,且//m n ,cos cos a A b B ∴=. …………1分 由正弦定理得2sin cos 2sin cos A A B B =,即sin 2sin 2A B =, …………2分 22A B ∴=或22A B π+=.,,2m n A B A B π≠∴≠∴+=.…………3分由sin sin A B +=得sin sin sin cos )4A B A A A π+=+=+=, sin()42A π+=. …………4分A 为锐角,12A π=或(2) ∆设,A B ≠∴2sin cos A。

辽宁省师大附中2014-2015学年高二上学期10月模块考试数学试卷(解析版)

辽宁省师大附中2014-2015学年高二上学期10月模块考试数学试卷(解析版)

辽宁省师大附中2014-2015学年高二上学期10月模块考试数学试卷(解析版)一、选择题1.若0<<b a ,则下列结论中不恒成立....的是( ) A .a b > B .11a b > C .ab b a 222>+ D.a b +>-【答案】D 【解析】试题分析:由不等式的基本性质可知A 、B 是正确的;选项C 是重要不等式ab b a 222≥+,由于b a <,所以等号不成立,因此C 正确;D 选项中ab b a 2-<+恒成立,答案选D. 考点:不等式的性质2.有一家三口的年龄之和为65岁,设父亲、母亲和小孩的年龄分别为x 、y 、z ,则下列选项中能反映x 、y 、z 关系的是( ) A .65=++z y xB .⎪⎩⎪⎨⎧>>=++z y z x z y x 65 C .⎪⎩⎪⎨⎧>>>>=++0065z y z x z y xD .⎪⎪⎩⎪⎪⎨⎧<<<=++65656565z y x z y x【答案】C 【解析】试题分析:由题意可知年龄和为65,且父母的年龄比小孩大,小孩的年龄是正数,答案选C.考点:线性规划的约束条件3.等差数列}{n a 的前n 项和为2811,30n S a a a ++=若,那么13S 值的是 ( ) A .130 B .65 C .70 D .以上都不对 【答案】A 【解析】试题分析:因为71111823)6(3183a d a d a a a a =+=+=++,所以107=a ,因此130132)(13713113==+=a a a S ,答案选A.考点:等差数列的性质与求和4.设}{n a 是等差数列,}{n b 为等比数列,其公比q ≠1, 且0>i b (i=1、2、3 …n )若11b a =,1111b a =则( )A .66b a =B .66b a >C .66b a <D .66b a >或 66b a < 【答案】B 【解析】试题分析:由等差、等比数列的性质可知221111116b b a a a +=+=,1116b b b =,又0>i b ,由基本不等式可知66b a ≥,而q ≠1,所以等号不成立,因此答案选B. 考点:等差、等比数列的性质和基本不等式5.设等比数列{}n a 的公比2=q , 前n 项和为n S ,则=45a S ( ) A .2 B .4 C .831 D .431 【答案】C【解析】试题分析:由等比数列的性质可知8312)21(21)1()1()1()1(35315145145=--=--=--=q a q q a a q q a a S ,答案选C.考点:等比数列的性质6.在等比数列{a n }中,a 1=1,q ∈R 且|q |≠1,若a m =a 1a 2a 3a 4a 5,则m 等于( ) A .9 B .10 C .11 D .12 【答案】C 【解析】试题分析:由等比数列的性质可知1110143215154321)(a q a q a a a a a a a m ====+++,答案选C. 考点:等比数列的性质7.数列n {a }中,对任意*N n ∈,n 12n a +a ++a =21⋅⋅⋅-,则22212n a +a ++a ⋅⋅⋅等于( ) A .()2n2-1B .3)12(2-n C.14-nD .314-n【答案】D【解析】试题分析:由1221-=+++n n a a a 得121121-=+++--n n a a a ,两式相减得11222--=-=n n n n a ,所以数列n {a }是首项为1,公比为2的等比数列,所以数列}{2na 是首项为1,公比为4的等比数列,因此314414122221-=--=+++n n n a a a ,答案选D. 考点:等比数列的性质8.若两个等差数列{a n }、{b n }的前n 项和分别为A n 、B n ,且满足5524-+=n n B A n n ,则135135b b a a ++的值为( ) A.97 B.78 C.2019 D.87【答案】D【解析】 试题分析:由等差数列的性质可知:87517521742/)(172/)(171717171171171171135135=-⨯+⨯==++=++=++B A b b a a b b a a b b a a ,答案选D.考点:等差数列的性质9.已知数列}{n a 的前n 项和为)34()1(2117139511--++-+-+-=+n S n n ,则312215S S S -+的值是( )A .-76B .76C .46D .13 【答案】A 【解析】试题分析:(并项求和法)由已知可知:⎪⎪⎩⎪⎪⎨⎧⨯--⨯+=为偶数为奇数n n n n S n 2)4(2141,所以2921154115=-⨯+=S ,6121314131=-⨯+=S ,44222)4(22-=⨯-=S ,因此76614429312215-=--=-+S S S ,答案选A.考点:并项求和10.设数列}{n a 为等差数列,其前n 项和为n S ,已知99741=++a a a ,852a a a ++93=,若对任意*N n ∈,都有k n S S ≤成立,则k 的值为( ) A .22 B .21 C .20 D .19【答案】C 【解析】试题分析:由等差数列的性质可知:9934741==++a a a a ,9335852==++a a a a ,所以31,3354==a a ,因此数列的首项为39,公差为-2,所以412)1(239+-=--=n n a n ,令0>n a 得241<n ,从而有0,02120<>a a ,因此k 的值为20,答案选C. 考点:等差数列的性质11.设数列}{n a 是以2为首项,1为公差的等差数列,}{n b 是以1为首项,2为公比的等比数列,则=+++1021b b b a a a ( )A .1033B .2057C .1034D .2058 【答案】A 【解析】试题分析:(分组求和法)由已知得1+=n a n ,12-=n n b ,所以121+=-n b n a ,因此103310212110)222()12()12()12(1091911011=+--=++++=++++++=+++ b b b a a a ,故答案选A.考点:等差数列与等比数列的性质与求和 12.已知0,0>>b a ,4112=+b a ,若不等式m b a 42≥+恒成立,则m 的最大值为( ) A .10 B .9 C .8 D .7 【答案】B 【解析】 试题分析:由已知可得1)12(4=+ba ,所以36)45(4)225(4)12(4)2(2=+≥++=+⋅+=+abb a b a b a b a ,所以364≤m 即9≤m ,答案选B.考点:基本不等式的应用二、填空题13.已知0<ab ,则||||||ab ab b b a a ++= . 【答案】-1 【解析】试题分析:由已知知a ,b 异号,所以0||||=+b ba a ,1||-=ab ab ,所以答案为-1. 考点:不等式的性质14.不等式0)12(1≥--x x 的解集为____________【答案】),21[+∞ 【解析】试题分析:去绝对值得⎩⎨⎧≥--≥0)12)(1(1x x x 或⎩⎨⎧≥--<0)12)(1(1x x x ,解得1≥x 或121<≤x ,故答案为),21[+∞. 考点:解不等式15.设等差数列{}n a 的前n 项和为n S .若272k S =,且118k k a a +=-,则正整数=k .【答案】4 【解析】试题分析:由已知可得181=++k k a a ,72)(2)(221212=+=+=k k k a a k a a k S ,而121++=+k k k a a a a ,所以k 1872=,解得k=4.考点:等差数列的性质16.关于数列有下列命题:①数列{n a }的前n 项和为n S ,且)(1R a a S n n ∈-=,则{n a }为等差或等比数列; ②数列{n a }为等差数列,且公差不为零,则数列{n a }中不会有)(n m a a n m ≠=, ③一个等差数列{n a }中,若存在)(0*1N k a a k k ∈>>+,则对于任意自然数k n >,都有0>n a ;④一个等比数列{n a }中,若存在自然数k ,使01<⋅+k k a a ,则对于任意*N n ∈,都有01<⋅+n n a a ,其中正确命题的序号是___ __。

2014-2015学年高二10月月考政治试题

2014-2015学年高二10月月考政治试题

高二年级月测试卷政治第一部分选择性试题(共70分)一、单项选择题(每题2分,共30题,满分60分)1. 航天飞机在发射升空后,很快就离开地面。

但是在高速运行的机舱内,航天员的身体相对于机舱来说,其位置是保持不变的。

这说明()A.事物只有在一定条件下才会运动B. 运动的形式是多种多样的C.在一定条件下,事物有相对静止的一面D.在特殊情况下,静止不一定是有条件的2.最近我国云南地区发生7了5.7级地震,造成了人员伤亡与财产损失。

地震的发生是不以人的意志为转移的,这是因为()A. 自然界的运动规律是客观的B. 物质与运动不可分割C.人类在规律面前是无能为力的D.意识不可能对事物作出超前反映3.新世纪、新阶段,面对前所未有的机遇和挑战,我们要进一步增强大局意识、忧患意识和责任意识,认认真真学习、老老实实做人。

这体现的认识论道理是()A.物质第一性,意识第二性,物质决定意识B.要重视意识的作用和精神的力量,抵制和克服错误的意识C.要努力树立正确的认识,努力学习真理与科学理论D.认识具有反复性4.下列说法与“少小离家老大回,乡音无改鬓毛衰”所蕴含的哲学寓意一致的是()A.心外无物B.种瓜得瓜,种豆得豆C.人不能两次踏入同一条河流D.对症下药,因地制宜5.下面关于物质与运动的关系说法正确的是()A.运动是物质的唯一特性B运动是物质的根本属性和存在方式C.动中有静,静中有动D. .思维运动的主体是精神6.要坚持科教兴国战略,把提高自主创新能力、建设创新型国家作为国家发展战略的核心。

建设创新型国家要求我们必须做到()①坚持一切从实际出发,实事求是②不断解放思想,开拓创新,与时俱进③求真务实,正确认识和把握国情④坚持辩证唯物主义的基本观点A.①②③ B.①②④ C.②③④ D.①②③④7.“望梅不能止渴。

”从物质与意识的关系来看,这是因为()①事物在人脑中的反映不等于事物自身②在一定条件下,意识也可能决定物质③观念的东西不能代替物质的东西④人脑并非意识产生的生理基础A.②④ B. ①③ C.②③ D.③④8.物质的唯一特性是客观实在性。

山东省临沂市某重点中学2014-2015学年高二上学期十月月考英语试题Word版含答案

山东省临沂市某重点中学2014-2015学年高二上学期十月月考英语试题Word版含答案

高二理科上学期英语10月月考试题第I 卷一:单项选择(20分)1. Gathering clouds the coming storm.A. declaredB. turned outC. connectedD. announced2. Only by shouting at the top of his voice .A. he was able to make himself hearB. he was able to make himself heardC. was he able to make himself hearD. was he able to make himself heard3. In my opinion, it is Kate rather than her parents that ___________.A. is to be blamedB. is to blameC. are to be blamedD. are to blame4. ___________ to strong sunlight for a long time will do harm to our skin.A. ExposedB. To exposeC. ExposingD. Being exposed5. The ________ , I think , he drew from his simple experimentis not scientific.A. attentionB. conclusionC. promiseD. relation6. ___________ 3,000 words, I also learned how to use basic grammar after being trained here.A. Except forB. Apart fromC. According toD. Instead of7. I wonder if it is __________ for you to pick me up on your way home this afternoon.A. comfortableB. convenientC. enjoyableD. legal8. Farmers in China began to use tractors __________ cattle for farming work.A. to take the place ofB. to take place ofC. to in place ofD. to take place9. The plan __________ just because people were unwilling to cooperate.A. broke downB. pulled downC. turned downD. put down10. The wallet ___________ several days ago was found __________ in the rubbish.A. stealing; lieB. stolen; lyingC. stealing; lainD. stolen; to lie11. The teacher __________ his students _________ five groups.A. divided; intoB. separated; fromC. separated; toD.divided; into12. It is strange that he ___________ interest in much of his research.A. lostB. had lostC. should have lostD. has lost13. Because of the urgent situation, the school _________ the children to leaveschool at once.A. provided forB. arranged forC. prepared forD. asked for14. Chen’s essay, ___________ 5 chapters, is said to be a copy of Mr. Yang’s onEconomy.A. consisted ofB. consisting ofC. made upD. made up for15. In public places, you should be __________ in case you lose face.A. cautiousB. curiousC. enthusiasticD.patient16. Tom _______ with Jack when our teacher into the classroom, and then theclassroom became quite immediately.A. quarreledB. had quarreledC. was quarrelingD. is quarreling17. We visited the factory ________ makes 80 percent of the toys in the city.A. whereB. thereC. in whichD. which18. When designing a project, you should be careful enough not _____ that is important.A. to leave anything outB. to leave out anythingC. to take out anythingD.bring anything out19. My little brother _____ great delight _____studying ancient architecture.A. picks; inB. devotes; toC. takes; inD.enjoys; by20. When our personal interests are ________ those of people, we should putpeople’s interests before our own.A. conflictingB. in conflict withC. conflict withD. inconflict against二:完形填空(20分)My dad has been driving a truck for almost his entire life.He's usually21__all the weekdays and comes home only at weekends. Sometimes he stays__22__for two weeks at a time. 23_I don't get tosee him as often as I wish, we remain very__24__.My dad is the type of person who doesn't let you__25__up anything that you start. When I was eleven, my father bought me a piano. At first I was so__26__about it that I would spend hours and hours learning how to play. Then it got __27__.I was so tired of it that I asked if I could stop. Much as I tried, he_28_me to go on. Now I have been playing for almost five years. I love it and I'm glad I__29__my dad's advice.My dad is__30_talented, for he has been playing the guitar for over 20 years. Under his influence, I also like__31__now.Sometimes my dad can be my biggest__32__.He makes me smile even when I losein a talent show__33__sometimes he can be my biggest critic (批评家). He_34__ignore the small mistakes I make. He encourages me never to lose__35__because hethinks that all my efforts will_36__ one day.My dad is generous. Every Thursday night, he__37__to read to the children at a children's club. When he reads, their_38__light up with curiosity about what will happen next. I feel__39__of having a personin my family who cares enough to volunteer to_40_.I love dad with all my heart. He’s a hero in my heart and the mos t wonderful person in the world.21. A. on22. A. away23. A. In case24. A. polite25. A. give26. A. nervous27. A. rough28. A. promised29. A. received30. A. physically31. A. composing32. A. director33. A. however34. A. ever35. A. aim36. A. come true37. A. agrees38. A. bodies39. A. jealous40. A. help B. withB. homeB. Even thoughB. kindB. putB. anxiousB. difficultB. persuadedB. challengedB. typicallyB. dancingB. supporterB. soB. oftenB. dreamB. take risksB. likesB. armsB. optimisticB. readC. outC. insideC. If onlyC. differentC. takeC. crazyC. disappointingC. remindedC. tookC. musicallyC. writingC. scholarC. andC. neverC. strengthC. pay offC. intendsC. handsC. proudC. workD. inD. aloneD. As ifD. closeD. speedD. familiarD. boringD. suggestedD. listenedD. exactlyD. drawingD. sponsorD. stillD. evenD. heartD. let outD. offersD. facesD. happyD.drive三:阅读理解(40分)ADuring the last fifteen years of my mother's life she suffered with Alzheimer's disease (老年痴呆). Until then she had been a bright, cheerful woman deeply interested and involved in the world around her. I would go home to visit her in Virginia and she would look at me in a puzzled way and ask, “Who are you?” I would answer, “I'm your son.” “Where do you live?” She would ask. “In California”, I would tell her. “Isn't that interesting,” she would say, “I have a son in California.”She seemed simply forgetful and confused at the beginning of the disease, but later on she would go through periods of intense anxiety. She would pace through the house she had lived in most of her life crying uneasily that she wanted to go home. Or she would leave home and wander away if she were unattended for a short time. Hoping to please her and put her mind at ease I would take her for a drive, visiting sites where she had lived as a child. In the yard of the hillside house in Shipman I sat in the car and admired the view of the old oaks and long green lawn. I pictured my mother there was a little girl playing with the pet lamb she had been so fond of. I looked to her for some response. She shookher head and said “ I want to go home.Over the years I have decided that what my mother was calling home was not a place, but a time. I suspect it was a time when she was much younger, when her children were still underfoot, when her husband was still vigorous and attentive.Watching my mother's suffering set me wondering where I would have gone in mind if someday I couldn’t find home and wanted to go there. In this family we tend to be long-lived and we grow fuzzy (糊涂的) minded as the years go by. At eighty I have already noticed some alarming symptoms. My doctor says the forgetfulness is only natural and that it comes with age. Still the fear of Alzheimer's is haunting there. Someday if and when I become even more cloudy minded than I am now, unable to drive and unable to tell you where "home" is, my dear son, I expect I will ask you to take me home, I know you will do your best to find the place I need to be. I leave these notes for your guidance.41. What's the main idea of the first two paragraphs?A. The author’s mother suffered with serious Alzheimer's disease.B. The au thor’s mother forgot who’s his son.C. The author didn’t know how to cure his mother.D. The author’s mother couldn’t find her home.42. What is not the symptom of the author’s mother ?A. cheerfulB. confusedC. forgetfulD. uneasy43. What’s the meaning of the underlined word “pictured”?A. photographedB. appearedC. describedD. painted44. What can you infer from the third paragraph?A. The author care much about his mother.B. The author’s mother was fond of pet lambs.C. The author saw a little girl playing with a pet lamb.D. The author’s mother didn’t like her usual home.45. What’s the best title of the passage?A. Take Mother Home.B. Everyone will suffer with Alzheimer's disease.C. A story about a son and a mother.D. Where Is Home?BR701An eighteen-year-old high school student from Utah won the top prize in the Intel Science Talent Search in the United States. The winner received a computer and a scholarship for a college education.More than 1,500 students from across the country entered projects in the competition this year. Their research included chemistry, medicine, physics, mathematics, engineering, and computer science ---- almost every area of science.Forty students were invited to Washington, D.C. for the final judging. A group of scientists judged them on their research abilities, critical thinking skills and creativity. The judges also questioned the students about scientific problems before deciding on the winners.The top winner received 100,000 dollars for college. Shannon Babb of American Fork High School studied the water quality of tile Spanish Fork River in Utah for six years. She found that people have a harmful effect on the river through human activity, including agriculture. And she suggested ways to improve the water quality in the future. These include educating the public not to put household chemicals down the drains(下水道), which lead to the river eventually.Seventeen-year-old Yi Sun of the Hanker School in San Jose, California, earned the second place. He won a 75,000-dollar scholarship for new discoveries about a mathematical theory known as random walks. His work could help computerscientists and chemists. Yi Sun was born in China.The third-place winner was also seventeen and born in China. Yuan “Chelsea” Zhang of Montgomery Blair High School in Rockville, Maryland, won a 50,000-dollar scholarship. She researched the molecular genetics(分子遗传学)of heart disease. Her findings could aid the development of new medicines.The Intel Science Talent Search is the oldest science competition for high school students in the United States. It is 65 years old this year. Past winners have gone on to receive six Nobel prizes and other top honors in science and math.46. What do we know about the talent search project?A. Most of its winners have received Nobel prizes.B. The project includes researches in every area of science.C. Only a small part of the students can attend the final judging.D. Most of the winners come from Asian countries.47. According to the text, .A. water quality in Utah will be better than that in the other statesB. the river was polluted only by those living near itC. Shannon Babb suggested more than one way to improve the water qualityD. household chemicals should be kept in the drains forever48. Which of the following about the girl from Maryland is NOT true?A. The scholarship she received was half as many as Shannon Babb.B. Her discovery is of great help to Chinese medicine.C. Her research will contribute to the cure of heart disease.D. She and the second-place winner Yi Sun have something in common.49. What is the text mainly about?A. Three winners' contributions to science and math.B. Three Chinese students won the Science Talent Search.C. Great rewards were given to winners in the competition.D. Winners of the Intel Science Talent Search in the US.50. Where are you most likely to find this text?A. In a newspaper.B. In a handbook.C. In a textbook.D. In a medical magazine.CIn the fall of 1985, I was a bright-eyed girl heading off to Howard University, aiming at a legal career and dreaming of sitting on a Supreme Court bench somewhere. Twenty-one years later I am still a bright-eyed dreamer and one with quite a different tale to tell.My grandma, an amazing woman, graduated from college at the age of 65.She was the first in our family to reach that goal. But one year after I started college, she developed cancer. I made the choice to withdraw from college to care for her. It meant that school and my personal dream would have to wait.Then I got married with another dream: building my family with a combination of adopted and biological children. In 1999, we adopted our first son.To lay eyes on him was fantastic—and very emotional.A year later came our second adopted boy.Then followed son No.3.In 2003, I gave birth to another boy.You can imagine how fully occupied I became, raising four boys under the age of 8!Our home was a complete zoo—a joyous zoo.Not surprising, I never did make it back to college full-time.But I never gave up on the dream either.I had only one choice: to find a way.That meant taking as few as one class each semester.The hardest part was feeling guilty about the time I spent away from the boys.They often wanted me to stay home with them.There certainly were times I wanted to quit, but I knew I should set an example for them to follow through the rest of their lives.In 2007, I graduated from the University of North Carolina.It took me over21 years to get my college degree!I am not special, just single-minded.It always struck me that when you're looking at a big challenge from the outside it looks huge, but when you're in the midst of it, it just seems normal.Everything you want won't arrive in your life on one day.It's a process.Remember: little steps add up to big dreams.51.When the author went to Howard University, her dream was to be ________.A.a writer B.a teacherC.a judge D.a doctor 52.Why did the author quit school in her second year of college?A.She wanted to study by herself.B.She fell in love and got married.C.She suffered from a serious illness.D.She decided to look after her grandma.53.What can we learn about the author from Paragraphs 4 and 5?A.She was busy yet happy with her family life.B.She ignored her guilty feeling for her sons.C.She wanted to remain a full-time housewife.D.She was too confused to make a correct choice.54.What does the author mostly want to tell us in the last paragraph?A.Failure is the mother of success.B.Little by little, one goes far.C.Every coin has two sides.D.Well begun, half done.55.Which of the following can best describe the author?A.Caring and determined.B.Honest and responsible.C.Ambitious and sensitive.D.Innocent and single-minded.DDeath Valley is one of the most famous deserts in the United States, covering a wide area with its alkali sand. Almost 20 percent of this area is well below sea level, and Badwater, a salt water pool, is about 280 feet below sea level and the lowest point in the United States.Long ago the Panamint Indians called this place “Tomesha”— the land of fire. Death Valley’s present name dates back to 1849, when a group of miners coming across from Nevada became lost in its unpleasantness and hugeness and their adventure turned out to be a sad story. Today Death Valley has been declared a National Monument(纪念碑) and is crossed by several well-marked roads where good services can be found easily. Luckily the change created by human settlement has hardly ruined the special beauty of this place.Here nature created a lot of surprising, almost like the sights on the moon, ever-changing as the frequent wind moves the sand about, showing the most unusual colors. One of the most astonishing and variable parts of Death Valley is the Devil’ s Golf Course, where it seems hard for one to tell re ality from terrible dreams. Sand sculptures(沙雕) stand on a frightening ground, as evening shadows move and lengthen.56. _______ is the lowest place in the desert.A. TomeshaB. Death ValleyC. NevadaD. Bad water57. The name of the valley comes from _______.A. an Indian nameB. the death of the minersC. the local peopleD. a National Movement58. From the passage we can learn that _______.A. no one had ever known the desert before the minersB. it’s still not easy to tr avel across the desertC. people can find gas-stations, cafes and hotels in the desertD. people have changed the natural sight of the desert59. Devil Golf Course is famous for _______.A. the frequent windB. the colors of the sandC. dream-like sightsD. the sand sculptures60. From the passage we can see that the writer _______ the Death Valley.A. appreciatesB. is fearful ofC. dislikesD. is tired of第II 卷一:根据汉语提示写出下列单词( 10分答案写在答题纸上)1.John Snow wanted to face the _________(挑战) and solve this problem.2. He had not ________( 预见,预知)this , so he made furtherinvestigations.3. His friends were _________(热情的) and encouraged him to publish hisideas.4.You can _________(阐明) this question if you study British history.5.For historical __________(建筑艺术) you have to go to older butsmaller towns built by the Romans.6.It looked _____________(壮丽的;辉煌的)when first built.R7027.It seemed strange that the man who develop ___________(共产主义)should have lived and died in London.8.With this extra evidence John Snow was able to ___________(宣布) withcertainty that polluted water carried the virus.9.Her first _________( 快乐;高兴) was going to the Tower.10.The cholera outbreak was so ______(严重的) that more than 500 peopledied in ten days.二:根据汉语提示写出下列短语(15分)1.提出2. 得出结论3. 由...组成4. 把...分成5. 除...之外6. 代替(动词短语)7. 拿起;接受;继续8. 看不见 9. 为...带来荣誉;值得赞扬 10. 讲得通;有意义11. 省去;遗漏 12. 为了方便 13. (机器)损坏;(计划;谈判)失败14. 有助于;造成 15. 对...某人严格三:阅读表达(15分)*1+ It’s good to make a mistake, and here is why. First of all, mistakes are a clear sign that you are trying new things. It’s always good to try new things because when you are trying new things you are growing. If you never try anything new, how can you improve? How can you expand? The simple answer is “You can’t”. Look around you. Almost everything valuable you see in your world is the result of _____________.[2] Another good thing about mistakes is this: when you are making mistakes, you are learning. Consider this: Edison failed 10000 times before he perfected the light bulb. When asked how it felt to fail that many times, he remarked that he hadn’t failed 10000 times, but rather had learned 10000 things that didn’t work.[3] Finally, when you make a mistake you are much closer to success. Why? Because when all is said and done, you will have tried only a few things before you succeed. Every time you made a mistake, you got rid of one bad thing and stepped closer to success.*4+ But this all doesn’t mean that you should go ahead without considering the consequences of a mistake. Instead, when you try something new, you have to be willing to set some reasonable limits so that you will have opportunities to try again in case that it doesn’t work out as you expected. We all have limited resources so don’t blow them all at one time. Realize that it probably won’t be perfect the first time and use these resources appropriately so you can learn, improve, and try it again. Only by using your mistakes in this way can you make significant advances in your career.*5+ There is an old saying that goes, “If you’re not making mistake, you’re not trying hard enough.” So go forth and make mistakes.1. List three reasons why making a mistake is good for you. (Please answer within 5 words for each blank.)① _______________________________________________________________② _______________________________________________________________③ _______________________________________________________________2. What’s the main idea of Paragraph 4? (Please answer within 8 words.)_______________________________________________________________3. Fill in the blank in paragraph 1 with proper words. (Please answer within 5 words.)_______________________________________________________________4. Which sentence in the text is the closest in meaning to the following one?You should take its bad results into account though making a mistake is good.______________________________________________________________________________________________________________________________5. Translate the underlined sentence in Paragraph 3 into Chinese.______________________________________________________________________________________________________________________________四:写作(满分30分)某中学生英文报近期开辟专栏,讨论学习习惯问题。

2014-2015学年度10月月考卷

2014-2015学年度10月月考卷

2014-2015学年度10月月考卷学校:___________姓名:___________班级:___________考号:___________一、选择题(题型注释)1.如图所示,为了使灯L1和L2组成并联电路,应该同时闭合()A、 S1和S2B、S1和S3C、S2和S3D、S1,S2和S32.小红家卫生间安装了换气扇和照明灯,换气扇和照明灯的电路连接如图所示。

下列说法中正确的是A.换气扇和照明灯不能同时工作B.换气扇和照明灯只能同时工作C.换气扇和照明灯工作时,通过它们的电流一定相等D.换气扇和照明灯工作时,它们两端的电压一定相等3.如图所示电路,闭合开关,两只灯泡都不亮,且电流表和电压表的指针都不动。

现将两灯泡L1和L2的位置对调,再次闭合开关时,发现两只灯泡仍不亮,电流表指针仍不动,但电压表的指针却有了明显的偏转,该电路的故障可能是()A.灯泡L1的灯丝断了B.灯泡L2的灯丝断了C.电流表和两个灯泡都坏了D.从a点经电流表到开关这段电路中出现断路4.如图所示的电路中,闭合开关S,已知电源电压为6V,L1两端的电压为2V,则下列说法正确的是:A.电压表的示数为2V B.电压表的示数为4VC.电压表的示数为6V D.电压表的示数为10V二、填空题(题型注释)5.如图甲所示的电路,电流表A1与A2的指针位置如图乙所示,则电流表A1的示数是 A,通过灯L2的电流是 A.6.用煤油炉烧水,如果水至沸腾时吸收的热量为煤油完全燃烧时放出热量的60%,烧开一壶水要吸收热量2.4×106J,那么需要完全燃烧多少煤油?(q煤油=4.6×107J/kg)7.在图中,灯泡L1和灯泡L2是______联连接的。

当电键K断开时,电压表的示数将________;电流表的示数将__________(选填“增大”、“不变”或“减小”)。

8.(2分) 如图所示的电路图,当闭合开关S 后,电阻R 1、R 2并联,电路正常工作,则甲表是 表,乙表是 表.9.若将20只相同的小灯泡串联接在220 V 的电路中,每只小灯泡两端的电压为 V ,若将20只相同的小灯泡并联接在110 V 的电路中,每只小灯泡两端的电压为 V 。

2014—2015学年度高二月考试卷(10月)

2014—2015学年度高二月考试卷(10月)

2014—2015学年度高二月考试卷(10月)高 二 物 理(时间:100分钟 满分:110分)一、单项选择题(本题共6小题,每小题4分,共24分) 1.关于电场强度与电势的关系,下面各种说法中正确的是( ) A .电场强度大的地方,电势一定高B .电场强度不变,电势也不变C .电场强度为零时,电势一定为零D .电场强度的方向是电势降低最快的方向2.如图1所示,空间有一电场,电场中有两个点a 和b .下列表述正确的是 A .该电场是匀强电场B .a 点的电场强度比b 点的大C .a 点的电势比b 点的高D .正电荷在a 、b 两点受力方向相同3.如图2空中有两个等量的正电荷q 1和q 2,分别固定于A 、B 两点,DC 为AB 连线的中垂线,C 为A 、B 两点连线的中点,将一正电荷q 3由C 点沿着中垂线移至无穷远处的过程中,下列结论正确的有( ) A .电势能逐渐减小 B .电势能逐渐增大 C .q 3受到的电场力逐渐减小D .q 3受到的电场力逐渐增大 图24.如图3所示,a 、b 、c 为电场中同一条水平方向电场线上的三点,c 为ab 的中点,a 、b 电势分别为φa=5 V 、φb =3 V .下列叙述正确的是( ) A .该电场在c 点处的电势一定为4 V B .a 点处的场强E a 一定大于b 点处的场强E b C .一正电荷从c 点运动到b 点电势能一定减少D .一正电荷运动到c 点时受到的静电力由c 指向a 图3 5.空间存在甲、乙两相邻的金属球,甲球带正电,乙球原来不带电,由于静电感应,两球在空间形成了如图4所示稳定的静电场.实线为其电场线,虚线为其等势线,A 、B 两点与两球球心连线位于同一直线上,C 、D 两点关于直线AB 对称,则( ) A .A 点和B 点的电势相同 B .C 点和D 点的电场强度相同C .正电荷从A 点移至B 点,静电力做正功D .负电荷从C 点沿直线CD 移至D 点,电势能先增大后减小 图4 6.如图5所示,一半径为R 的圆盘上均匀分布着电荷量为Q 的电荷,在垂直于圆盘且过圆心c 的轴线上有a 、 b 、d 三个点,a 和b 、b 和 c 、 c 和d 间的距离均为R ,在a 点处有一电荷量为q (q >0)的固定点 电荷.已知b 点处的场强为零,则d 点处场强的大小为(k 为静电力常量)( ). 图5A .k 3q R 2B .k 10q 9R 2C .k Q +qR2D .k 9Q +q 9R 2二、多项选择题(本题共4小题,每小题6分,共24分) 7.下列各量中,与检验电荷无关的物理量是( )A .电场力FB .电场强度EC .电势差UD .电场力做的功W8.带电粒子M 只在电场力作用下由P 点运动到Q 点,在此过程中克服电场力做了2.6×10-8 J 的功,那么( )A .M 在P 点的电势能一定小于它在Q 点的电势能B .P 点的场强一定小于Q 点的场强C .P 点的电势一定高于Q 点的电势D .M 在P 点的动能一定大于它在Q 点的动能9.如图6所示的电路中,AB 是两金属板构成的平行板电容器.先将电键K 闭合,等电路稳定后再将K 断开,然后将B 板向下平移一小段距离,并且保持两板间的某点P 与A 板的距离不变.则下列说法正确的是( ) A .电容器的电容变小B .电容器内部电场强度大小变大C .电容器内部电场强度大小不变D .P 点电势升高10.带电粒子在匀强电场中的运动轨迹如图7所示,如果带电粒子只受电场力作用从a 到b 运动,下列说法正确的是( ) A .粒子带正电B .粒子在a 和b 点的加速度相同C .该粒子在a 点的电势能比在b 点时大D .该粒子在b 点的速度比在a 点时大图7 图6图1三、计算题(本题共4小题,共50分)11.(10分)如图所示,在匀强电场中,将带电荷量q=-6×10-6 C的电荷从电场中的A点移到B点,克服电场力做了2.4×10-5 J的功,再从B点移到C点,电场力做了1.2×10-5 J的功.求:(1) A、B两点间的电势差U AB和B、C两点间的电势差U BC;(2) 如果规定B点的电势为零,则A点和C点的电势分别为多少?(3) 作出过B点的一条电场线(只保留作图的痕迹,不写做法).12.(12分)一个带正电的微粒,从A点射入水平方向的匀强电场中,微粒沿直线AB运动,如图所示.AB 与电场线夹角θ=30°,已知带电粒子的质量m=1.0×10-7 kg,电荷量q=1.0×10-10 C,A、B相距L =20 cm.(取g=10 m/s2,结果保留两位有效数字)求:(1) 说明微粒在电场中运动的性质,要求说明理由.(2) 电场强度的大小和方向.(3)要使微粒从A点运动到B点,微粒射入电场时的最小速度是多少.13.(14分)如图所示,在E=103 V/m的水平向左匀强电场中,有一光滑半圆形绝缘轨道竖直放置,轨道与一水平绝缘轨道MN连接,半圆轨道所在竖直平面与电场线平行,其半径R=0.4 m,一带正电荷q=10-4 C的小滑块质量为m=0.04 kg,与水平轨道间的动摩擦因数μ=0.2,g取10 m/s2,求:(1) 要使小滑块能运动到半圆轨道的最高点L,滑块应在水平轨道上离N点多远处释放?(2) 这样释放的滑块通过P点时对轨道压力是多大?(P为半圆轨道中点)14.(14分)如图所示,EF与GH间为一无场区.无场区左侧A、B为相距为d、板长为L的水平放置的平行金属板,两板上加某一电压从而在板间形成一匀强电场,其中A为正极板.无场区右侧为一点电荷Q形成的电场,点电荷的位置O为圆弧形细圆管CD的圆心,圆弧半径为R,圆心角为120°,O、C在两板间的中心线上,D位于GH上.一个质量为m、电荷量为q的带正电粒子以初速度v0沿两板间的中心线射入匀强电场,粒子出匀强电场经无场区后恰能进入细圆管,并做与管壁无相互挤压的匀速圆周运动.(不计粒子的重力、管的粗细)求:(1) O处点电荷的电性和电荷量;(2) 两金属板间所加的电压.。

湖北省仙桃中学2014-2015学年高二10月月考语文试题 Word版含答案

湖北省仙桃中学2014-2015学年高二10月月考语文试题 Word版含答案

仙桃中学2014年秋季学期十月考试高二语文试题本试题卷共六大题,共23小题,共8页。

全卷满分150分。

考试用时150分钟。

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一、语文基础知识(共15分,共5小题,每小题3分)1.下列词语中,加点字的读音有误的一项是()A.凝噎.(yē)天堑.(qiàn)袖襟.(jīn)鲈鱼堪脍.(kuài)B.禀.赋(bǐn)戕.害(qiāng)骤.雨(zhîu)鳏.寡孤独(guān)C.罪愆.(qiān)哺.育(bǔ)国玺.(xǐ)舞榭.歌台(xìâ)D.淆.乱(xiáo)罗绮.(qǐ)甘霖.(lín)乍.暖还寒(zhà)2.下列词语,字形全部正确的一组是()A.萧鼓缥湘樯橹苌弘化碧B.贤惠憔悴嘻笑羽扇纶巾C.痊济鲁莽暮霭玉簪罗髻D.料峭篡夺孟浪繁文缛节3、下列句中,加点的成语使用错误的一项是()A.虽然好莱坞大片来势汹汹,如洪水飓风,国产影片在这种压力下步履维艰....,但也不断显露勃勃生机,总会给中国观众带来意想不到的惊喜。

B.哈姆莱特肆无忌惮....地同意了克劳狄斯设下的赌局,与雷欧提斯比剑,根本没意识到这是一个巨大的阴谋,以致于最终和敌人同归于尽。

C.我们对经典多一分崇敬,多一份耐心,多挤一点时间阅读,让自己起点更高一些,那么对经典的隔膜就会消除,就会一步步登堂入室....。

D.善良本分的窦娥在临刑时发下的三桩誓愿,既是为自己的无辜叫屈,更是对当时社会上普遍存在的各种罪行,尤其是官吏草菅人命....的无情控诉。

高二数学-2014-2015学年高二上学期10月月考数学试卷

高二数学-2014-2015学年高二上学期10月月考数学试卷

2014-2015学年高二(上)10月月考数学试卷一、填空题(共14小题,每小题6分,满分84分)1.在△ABC中,已知a=3,b=4,sinB=,则sinA= .2.已知数列{a n}的首项a1=1,且a n=2a n﹣1+1(n≥2),则a5等于.3.在△ABC中,a=6,B=30°,C=120°,则△ABC的面积是.4.等差数列{a n}中,a2=﹣5,d=3,则a1为.5.在△ABC中,如果(a+b+c)•(b+c﹣a)=3bc,则角A等于.6.等差数列{a n}中,a3=50,a5=30,则a7= .7.已知等差数列{a n}的前3项依次为a﹣1,a+1,2a+3,则此数列的通项a n为.8.在△ABC中,,则∠B= .9.在﹣1和8之间插入两个数a,b,使这四个数成等差数列,则a= .10.在△ABC中,若,则最大角的余弦值等于.11.在△ABC中,a=5,B=105°,C=15°,则此三角形的最大边的长为.12.数列{a n}中,a3=2,a7=1,且数列{}是等差数列,则a11= .13.在△ABC中,已知b=3,c=3,则a= .14.在△ABC中,a+b=12,A=60°,B=45°,则a= .二、解答题.(14+15+15+15+17=76分)15.在△ABC中,A=30°,C=105°,a=10,求b,c.16.在△ABC中,(1)已知A=60°,b=4,c=7,求a;(2)已知a=7,b=5,c=3,求A.17.在等差数列{a n}中,已知a5=10,a12=31,求a20,a n.18.根据下列条件解三角形:c=,A=45°,a=2.19.在四边形ABCD中,∠ADB=∠BCD=75°,∠ACB=∠BDC=45°,DC=,求:(1)AB的长(2)四边形ABCD的面积.2014-2015学年高二(上)10月月考数学试卷参考答案与试题解析一、填空题(共14小题,每小题6分,满分84分)1.在△ABC中,已知a=3,b=4,sinB=,则sinA= .考点:正弦定理.专题:解三角形.分析:由正弦定理列出关系式,把a,b,sinB的值代入即可求出sinA的值.解答:解:∵在△ABC中,a=3,b=4,sinB=,∴由正弦定理=得:sinA===.故答案为:点评:此题考查了正弦定理,熟练掌握正弦定理是解本题的关键.2.已知数列{a n}的首项a1=1,且a n=2a n﹣1+1(n≥2),则a5等于31 .考点:数列递推式.专题:等差数列与等比数列.分析:在递推公式中,令n=2,求出a2,令n=3,得a3,令n=4,得a4,令n=5,得a5解答:解:在a n=2a n﹣1+1中,令n=2,得a2=2a1+1=3,令n=3,得a3=2a2+1=7,令n=4,得a4=2a3+1=15,令n=5,得a5=2a4+1=31,故答案为:31点评:本题考查数列递推公式的简单直接应用,属于基础题.3.在△ABC中,a=6,B=30°,C=120°,则△ABC的面积是9.考点:正弦定理.专题:解三角形.分析:由B与C的度数求出A的度数,确定出sinA的值,再由sinB以及a的值,利用正弦定理求出b的值,利用三角形面积公式即可求出三角形ABC面积.解答:解:∵在△ABC中,a=6,B=30°,C=120°,即A=30°,∴由正弦定理=得:b==6,则S△ABC=absinC=9.故答案为:9.点评:此题考查了正弦定理,以及三角形面积公式,熟练掌握正弦定理是解本题的关键.4.等差数列{a n}中,a2=﹣5,d=3,则a1为﹣8 .考点:等差数列.专题:等差数列与等比数列.分析:由等差数列的通项公式和已知数据可得.解答:解:∵等差数列{a n}中,a2=﹣5,d=3,∴a1+d=a2,代值可得a1+3=﹣5,解得a1=﹣8故答案为:﹣8点评:本题考查等差数列的通项公式,属基础题.5.在△ABC中,如果(a+b+c)•(b+c﹣a)=3bc,则角A等于60°.考点:余弦定理.专题:计算题.分析:首先对(a+b+c)•(b+c﹣a)=3bc化简整理得b2+c2+﹣a2=bc代入余弦定理中即可求得cosA,进而求得答案.解答:解:(a+b+c)•(b+c﹣a)=(b+c)2﹣a2=b2+c2+2bc﹣a2=3bc∴b2+c2+﹣a2=bc∴cosA==∴∠A=60°故答案为60°点评:本题主要考查了余弦定理的应用.解题的关键是求得b2+c2+﹣a2与bc的关系.6.等差数列{a n}中,a3=50,a5=30,则a7= 10 .考点:等差数列的通项公式.专题:等差数列与等比数列.分析:由已知求出等差数列的公差,代入等差数列的通项公式得答案.解答:解:设等差数列{a n}的公差为d,由a3=50,a5=30,得.∴a7=a5+2d=30﹣20=10.故答案为:10.点评:本题考查了等差数列的通项公式,是基础的计算题.7.已知等差数列{a n}的前3项依次为a﹣1,a+1,2a+3,则此数列的通项a n为2n﹣3 .考点:等差数列的性质;等差数列的通项公式.专题:计算题.分析:由a﹣1,a+1,2a+3为等差数列{a n}的前3项,利用等差数列的性质列出关于a的方程,求出方程的解得到a的值,进而确定出此数列的首项及公差,根据首项与公差写出等差数列的通项公式即可.解答:解:∵a﹣1,a+1,2a+3为等差数列{a n}的前3项,∴2(a+1)=(a﹣1)+(2a+3),解得:a=0,∴等差数列{a n}的前3项依次为﹣1,1,3,∴此等差数列的公差d=1﹣(﹣1)=2,首项为﹣1,则此数列的通项a n=﹣1+2(n﹣1)=2n﹣3.故答案为:2n﹣3点评:此题考查了等差数列的性质,以及等差数列的通项公式,熟练掌握性质及公式是解本题的关键.8.在△ABC中,,则∠B= 45°.考点:正弦定理.专题:计算题.分析:先根据正弦定理可知,进而根据题设条件可知,推断出sinB=cosB,进而求得B.解答:解:由正弦定理可知,∵∴∴sinB=cosB∴B=45°故答案为45°点评:本题主要考查了正弦定理的应用.属基础题.9.在﹣1和8之间插入两个数a,b,使这四个数成等差数列,则a= 2 .考点:等差数列的性质.专题:计算题;等差数列与等比数列.分析:在﹣1和8之间插入两个数a,b,使这四个数成等差数列,即﹣1,a,b,8成等差数列,利用等差数列的性质列出关于a与b的方程组,求出方程组的解集即可得到a与b的值.解答:解:根据题意得:﹣1,a,b,8成等差数列,∴2a=﹣1+b①,2b=a+8②,由①得:b=2a+1,将b=2a+1代入②得:2(2a+1)=a+8,即3a=6,解得:a=2,将a=2代入得:b=2a+1=5,则a=2,b=5.故答案为:2.点评:此题考查了等差数列的性质,利用了方程的思想,熟练掌握等差数列的性质是解本题的关键.10.在△ABC中,若,则最大角的余弦值等于﹣.考点:余弦定理.专题:解三角形.分析:根据已知比值设出a,b,c,利用大边对大角得到C为最大角,利用余弦定理表示出cosC,将设出的三边长代入求出cosC的值即可.解答:解:根据题意设a=k,b=2k,c=k,∴最大角为C,利用余弦定理得:cosC===﹣,则最大角的余弦值为﹣.故答案为:﹣点评:此题考查了余弦定理,熟练掌握余弦定理是解本题的关键.11.在△ABC中,a=5,B=105°,C=15°,则此三角形的最大边的长为.考点:正弦定理.专题:计算题;解三角形.分析:由三角形内角和定理,算出A=180°﹣B﹣C=60°,再根据正弦定理的式子,算出b=,结合B为钝角,可得此三角形的最大边的长.解答:解:∵△ABC中,B=105°,C=15°,∴A=180°﹣105°﹣15°=60°根据正弦定理,得∴b===由于B为最大角,所以最大边长为b=故答案为:点评:本题给出三角形的两个角和一条边,求最大边长.着重考查了三角形内角和定理和正弦定理等知识,属于基础题.12.数列{a n}中,a3=2,a7=1,且数列{}是等差数列,则a11= .考点:等差数列的性质.专题:计算题.分析:先有条件求得和的值,再根据+=,求得a11的值.解答:解:∵数列{}是等差数列,=,=,且+=,∴+=1,∴=,∴a11 +1=,∴a11=.故答案为:.点评:本题主要考查等差数列的定义和性质,得到+=,是解题的关键,属于中档题.13.在△ABC中,已知b=3,c=3,则a= 6 .考点:余弦定理;正弦定理.专题:计算题.分析:首先根据正弦定理得出sinC的值进而根据特殊角的三角函数值求出C的值,从而得出角A为直角,再根据勾股定理求出求出a的值.解答:解:根据正弦定理得∴sinC===∵C∈(0,π)∠C=60°∴∠A=90°∴a2=b2+c2∴a=6故答案为6.点评:本题考查了正弦定理以及勾股定理,解题的关键是求出角A的值,属于中档题.14.在△ABC中,a+b=12,A=60°,B=45°,则a= 36﹣12.考点:正弦定理.专题:解三角形.分析:由a+b=12,得到b=12﹣a,再由sinA与sinB的值,利用正弦定理列出关系式,即可求出a的值.解答:解:∵在△ABC中,a+b=12,即b=12﹣a,A=60°,B=45°,∴由正弦定理=得:a==,解得:a=36﹣12,故答案为:36﹣12点评:此题考查了正弦定理,熟练掌握正弦定理是解本题的关键.二、解答题.(14+15+15+15+17=76分)15.在△ABC中,A=30°,C=105°,a=10,求b,c.考点:解三角形.专题:计算题;解三角形.分析:由A与C的度数求出B的度数,再由正弦定理即可求出b,c的值.解答:解:∵A=30°,C=105°,∴B=45°,∵,∴b==10,c==5+5.点评:此题考查了正弦定理,以及特殊角的三角函数值,熟练掌握正弦定理是解本题的关键.16.在△ABC中,(1)已知A=60°,b=4,c=7,求a;(2)已知a=7,b=5,c=3,求A.考点:余弦定理;解三角形.专题:计算题;解三角形.分析:(1)利用已知的两边和其夹角,利用余弦定理求得a的值;(2)在△ABC中,由 a=7,b=5,c=3,利用余弦定理可得cosA=的值,从而得到A的值.解答:解:(1)∵A=60°,b=4,c=7,∴a==(2)∵a=7,b=5,c=3,∴cosA==﹣,∴点评:本题考查余弦定理的运用,考查学生的计算能力,正确运用余弦定理是关键.17.在等差数列{a n}中,已知a5=10,a12=31,求a20,a n.考点:等差数列的通项公式.专题:等差数列与等比数列.分析:直接由已知利用等差数列的通项公式列方程组求解首项和公差,然后代入等差数列的通项公式得答案.解答:解:在等差数列{a n}中,由a5=10,a12=31,得,解得:,∴a n=a1+(n﹣1)d=3n﹣5.a20=a1+19d=55.点评:本题考查了等差数列的通项公式,是基础的计算题.18.根据下列条件解三角形:c=,A=45°,a=2.考点:解三角形.专题:计算题;解三角形.分析:根据正弦定理,结合三角形的边角关系即可求出三角形的内角和边长.解答:解:∵,∴sinC==,∴C=60°或120°,当C=60°时,B=180°﹣A﹣C=75°,b===1;当C=120°时,B=180°﹣A﹣C=15°,b===﹣1.故b=1,C=60°,B=75°,或b=﹣1,C=120°,B=15°.点评:本题主要考查正弦定理的应用,利用正弦定理是解决本题的关键.19.在四边形ABCD中,∠ADB=∠BCD=75°,∠ACB=∠BDC=45°,DC=,求:(1)AB的长(2)四边形ABCD的面积.考点:正弦定理.专题:解三角形.分析:(1)由∠BCD﹣∠ACB求出∠ACD度数,再由∠BDC度数求出∠DAC度数,进而得到∠ACD=∠DAC,利用等角对等边得到AD=DC=,在三角形BCD中,求出∠CBD的度数,利用正弦定理列出关系式,求出BD的长,在三角形ABD中,利用余弦定理即可求出AB的长;(2)利用三角形面积公式分别求出三角形ABD与三角形BCD面积,之和即为四边形ABCD 面积.解答:解(1)∵∠BCD=75°,∠ACB=45°,∴∠ACD=30°,又∵∠BDC=45°,∴∠DAC=180°﹣(75°+45°+30°)=30°,∴AD=DC=,在△BCD中,∠CBD=180°﹣(75°+45°)=60°,由正弦定理得:=,即=,∴BD==,在△ABD中,由余弦定理得:AB2=AD2+BD2﹣2×AD×BD×cos75°=5,∴AB=;(2)由题意得:S△ABD=×AD×BD×sin75°=,S△BCD=×CD×BC×sin75°=,则四边形ABCD的面积S=S△ABD+S△BCD=.点评:此题考查了正弦定理,余弦定理,以及三角形面积公式,熟练掌握定理及公式是解本题的关键.11。

四川省成都市石室中学2014-2015学年高二10月月考英语试卷 Word版含答案

四川省成都市石室中学2014-2015学年高二10月月考英语试卷 Word版含答案

成都市石室中学2014~2015学年度上学期10月月考高二英语试题本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

考试用时120分钟,满分150分。

第I卷(选择题,共105分)第一部分听力(共两节,满分20分)第一节(共5小题;每小题1分,满分5分)听下面5段对话。

每段对话后有一道小题,从每题所给的A、B、C三个选项中选出最佳选项。

听完每段对话后,你将有10秒钟的时间来回答有关小题和阅读下一小题,每段对话你将听一遍。

1. What will the man probably do?A. Take a rest.B. Go to a party.C. Meet his boss.2. What do we know about the man?A. He has been caught copying a report.B. He is not free at the moment.C. He won’t leave till the last minute.3. What is the woman concerned about?A. Her health.B. Her character.C. Her appearance.4. What does the man mean?A. The fridge will be fixed.B. The room will be warmer.C. The lights will be turned on.5. What does the man imply?A. The woman already has too many shoes.B. The new shoes do not look good enough.C. He doesn’t care where to put the new shoes.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。

上学期高二10月月考数学(附答案)

上学期高二10月月考数学(附答案)

四川省雅安中学2014-2015学年高二10月月考数学试题第Ⅰ卷(选择题,共50分)一、选择题:(本题共10个小题,每小题5分,共50分,每个小题给出的四个选项中,只有唯一个选项是符合题目要求的,请将正确答案的序号填涂在机读卡上。

)1、圆心为()11-,,半径为2的圆的方程是( )()()22.112A x y -++= ()()22.114B x y ++-=()()22.112C x y ++-= ()()22.114D x y -++=2、若集合()(){}2130A x x x =+-<,{}5B x Nx *=∈≤,则A B 为( ) {}.1,2,3A {}.1,2B 1.32C x x ⎧⎫-<<⎨⎬⎩⎭ 1.52D x N x *⎧⎫∈-<≤⎨⎬⎩⎭3、已知,a b c d >>,且,c d 不为0,那么下列不等式成立的是( ).A a d b c > .B ac bd > .C a c b d ->-.D a c b d +>+ 4、经过两点()4,21A y +,().2,3B -的直线的倾斜角为34π,则y 的值为( ) .1A - .3B - .0C .2D5、直线210mx y m -++=经过一定点,则该定点的坐标为( )().2,1A - ().2,1B ().1,2C - ().1,2D 6、若直线10x y -+=与圆()222x a y -+=有公共点,则实数a 的取值范围是( )().31A -, [].1,3B - [].3,1C - (][).,31,D -∞-+∞7lg x =的根的个数是( ).0A .1B .2C .D 无法确定 8、对任意的[]1,1a ∈-,函数()()2442f x x a x a =+-+-的值总大于0,则x 的取值范围为( )().1,3A ()().,13,B -∞+∞ ().,1C -∞ ().3,D +∞9、目标函数y x z +=2,变量y x ,满足⎪⎩⎪⎨⎧≥<+≤+-12553034x y x y x ,则有( )A .3,12min max ==z zB .max 12,z =z 无最小值C .z z ,3min =无最大值D .z 既无最大值,也无最小值10、已知圆O 的半径为1,PA PB 、为该圆的两条切线,A B 、为两切点,那么PA PB 的最小值为( ).4A -.3B -.4C -+D.3-+第Ⅱ卷(非选择题,共100分)二、填空题:(本题共5个小题,每小题5分,共25分,请把答案填在答题卡上。

江苏省扬州中学2014-2015学年高二数学上学期月考试卷(10月份)(含解析)

江苏省扬州中学2014-2015学年高二数学上学期月考试卷(10月份)(含解析)

江苏省扬州中学2014-2015学年高二上学期月考数学试卷(10月份)一、填空题:本大题共14个小题;每小题5分,共70分.1.(5分)若直线y=kx+1与直线2x+y﹣4=0垂直,则k=.2.(5分)若直线3x+y+a=0过圆x2+y2+2x﹣4y=0的圆心,则a的值为.3.(5分)设AA1是正方体的一条棱,则这个正方体中与AA1垂直的棱共有条.4.(5分)直线x+2y﹣1=0右上方(不含边界)的平面区域用不等式表示.5.(5分)若一个球的体积为,则它的表面积为.6.(5分)直线a,b分别是长方体相邻两个面上的对角线所在直线,则a,b位置关系是.7.(5分)将一个圆锥的侧面沿一条母线剪开,其展开图是半径为2的半圆,则该圆锥的高为.8.(5分)过点C(3,4)且与x轴,y轴都相切的两个圆的半径分别为r1,r2,则r1r2=.9.(5分)已知直线kx﹣y+1=0与圆C:x2+y2=4相交于A,B两点,若点M在圆C上,且有(O为坐标原点),则实数k=.10.(5分)设α,β为两个不重合的平面,m,n是两条不重合的直线,给出下列四个命题:①若m⊂α,n⊂α,m∥β,n∥β,则α∥β;②若n⊂α,m⊂β,α与β相交且不垂直,则n与m不垂直;③若α⊥β,α∩β=m,m⊥n,则n⊥β;④若m∥n,n⊥α,α∥β,则m⊥β.其中所有真命题的序号是.11.(5分)正三棱锥P﹣ABC高为2,侧棱与底面所成角为45°,则点A到侧面PBC的距离是.12.(5分)过圆x2+y2=4内一点P(1,1)作两条相互垂直的弦AC,BD,当AC=BD时,四边形ABCD的面积为.13.(5分)设m,n∈R,若直线(m+1)x+(n+1)y﹣2=0与圆(x﹣1)2+(y﹣1)2=1相切,则m+n的取值范围是.14.(5分)平面直角坐标系中,已知点A(1,﹣2),B(4,0),P(a,1),N(a+1,1),当四边形PABN的周长最小时,过三点A、P、N的圆的圆心坐标是.二、解答题:本大题共6小题,14+14+14+16+16+16=90分.15.(14分)如图,在四面体ABCD中,AB=AC=DB=DC,点E是BC的中点,点F在线段AC上,且.(1)若EF∥平面ABD,求实数λ的值;(2)求证:平面BCD⊥平面AED.16.(14分)已知:无论a取何值,直线(a+2)x+(a+1)y+a=0始终平分半径为2的圆C.(1)求圆C的标准方程;(2)过点A(﹣1,4)作圆C的切线l,求切线l的方程.17.(14分)如图,在四棱锥P﹣ABCD中,平面PAB⊥平面ABCD,BC∥平面PAD,∠PBC=90°,∠PBA≠90°.求证:(1)AD∥平面PBC;(2)平面PBC⊥平面PAB.18.(16分)如图所示,在棱长为2的正方体ABCD﹣A1B1C1D1中,E、F分别为DD1、DB的中点.(1)求证:EF∥平面ABC1D1;(2)求证:EF⊥B1C;(3)求三棱锥的体积.19.(16分)在平面直角坐标系xOy中,曲线y=x2﹣6x+1与坐标轴的交点都在圆C上.(Ⅰ)求圆C的方程;(Ⅱ)若圆C与直线x﹣y+a=0交与A,B两点,且OA⊥OB,求a的值.20.(16分)如图,在平面直角坐标系xOy中,已知圆C1:(x+1)2+y2=1,圆C2:(x﹣3)2+(y﹣4)2=1.(1)若过点C1(﹣1,0)的直线l被圆C2截得的弦长为,求直线l的方程;(2)设动圆C同时平分圆C1的周长、圆C2的周长.①证明:动圆圆心C在一条定直线上运动;②动圆C是否经过定点?若经过,求出定点的坐标;若不经过,请说明理由.江苏省扬州中学2014-2015学年高二上学期月考数学试卷(10月份)参考答案与试题解析一、填空题:本大题共14个小题;每小题5分,共70分.1.(5分)若直线y=kx+1与直线2x+y﹣4=0垂直,则k=.考点:直线的一般式方程与直线的垂直关系.专题:计算题;直线与圆.分析:直线y=kx+1的斜率是k,直线2x+y﹣4=0的斜率是﹣2,利用直线与直线垂直的关系,能够求出k.解答:解:直线y=kx+1的斜率是k,直线2x+y﹣4=0的斜率是﹣2,∵直线y=kx+1与直线2x+y﹣4=0垂直,∴﹣2k=﹣1,k=.故答案为:.点评:本题考查直线的一般方程与直线的垂直关系,是基础题.解题时要认真审题,仔细解答.2.(5分)若直线3x+y+a=0过圆x2+y2+2x﹣4y=0的圆心,则a的值为1.考点:直线与圆的位置关系.专题:计算题.分析:根据所给的圆的一般式方程,求出圆的圆心,根据圆心在直线3x+y+a=0上,把圆心的坐标代入直线的方程,得到关于a的方程,解方程即可.解答:解:∵圆x2+y2+2x﹣4y=0的圆心是(﹣1,2)圆心在直线3x+2y+a=0上,∴﹣3+2+a=0,∴a=1故答案为:1点评:本题考查圆的一般方程与点与直线的位置关系,本题解题的关键是表示出圆心,根据圆心的位置,即可求解3.(5分)设AA1是正方体的一条棱,则这个正方体中与AA1垂直的棱共有8条.考点:空间中直线与直线之间的位置关系.专题:空间位置关系与距离.分析:根据正方体的性质,判定线面垂直,再根据线面垂直判断线线垂直.解答:解:∵AA1垂直于上、下两底面,∴位于上、下两底面中的8条棱都与AA1垂直,其余的棱与AA1平行,故答案是8.点评:本题考查空间中直线与直线的垂直关系的判定.4.(5分)直线x+2y﹣1=0右上方(不含边界)的平面区域用不等式x+2y﹣1>0表示.考点:二元一次不等式(组)与平面区域.专题:不等式的解法及应用.分析:直线ax+by+c=0(b≠0)两侧的区域用不等式ax+by+c<0或ax+by+c>0表示.只看b的值,b>0时“>”为上侧、“<”为下侧.而b<0时“>”为下侧、“<”为上侧.解答:解:∵y的系数大于零,∴要表示直线x+2y﹣1=0右上方(不含边界)的平面区域,需用“>”的不等式表示,∴x+2y﹣1>0故答案为:x+2y﹣1>0点评:本题主要考查用不等式表示平面区域,关键是记住y的系数与上下两侧的关系.5.(5分)若一个球的体积为,则它的表面积为12π.考点:球的体积和表面积.专题:计算题.分析:有球的体积,就可以利用公式得到半径,再求解其面积即可.解答:解:由得,所以S=4πR2=12π.点评:本题考查学生对公式的利用,是基础题.6.(5分)直线a,b分别是长方体相邻两个面上的对角线所在直线,则a,b位置关系是相交或异面.考点:空间中直线与直线之间的位置关系.专题:空间位置关系与距离.分析:a,b对角线开始于同一个顶点时相交;a,b不是开始于同一个顶点时异面;a,b 没有平行的可能.解答:解:∵直线a,b分别是长方体相邻两个面上的对角线所在直线,∴a,b可能是相交线,a,b对角线开始于同一个顶点时相交;a,b也可以是异面,两个对角线a,b不是开始于同一个顶点时异面;a,b没有平行的可能.故答案为:相交或异面.点评:本题考查两条直线的位置关系的求法,是基础题,解题时要认真审题,注意空间思维能力的培养.7.(5分)将一个圆锥的侧面沿一条母线剪开,其展开图是半径为2的半圆,则该圆锥的高为.考点:旋转体(圆柱、圆锥、圆台).专题:计算题;空间位置关系与距离.分析:根据半圆的周长等于圆锥底面圆的周长求出底面圆的半径,再根据圆锥的轴截面图形求高即可.解答:解:设圆锥的底面圆半径为r,则2πr=2π⇒r=1,∴h==.故答案是.点评:本题考查圆锥的侧面展开图及圆锥的轴截面,比较基础.8.(5分)过点C(3,4)且与x轴,y轴都相切的两个圆的半径分别为r1,r2,则r1r2=25.考点:圆的标准方程.专题:计算题.分析:由题意得:满足与x轴,y轴都相切的圆的圆心在第一象限,设出圆心(a,a),根据切线的性质得到半径r=a,表示出圆的标准方程,由C在此圆上,将C的坐标代入圆的方程中,得到关于a的一元二次方程,根据r1,r2为此一元二次方程的两个解,利用根与系数的关系即可得出r1r2的值.解答:解:由题意得:满足与x轴,y轴都相切的圆的圆心在第一象限,设圆心坐标为(a,a),则半径r=a,∴圆的方程为(x﹣a)2+(y﹣a)2=a2,又C(3,4)在此圆上,∴将C的坐标代入得:(3﹣a)2+(4﹣a)2=a2,整理得:a2﹣14a+25=0,∵r1,r2分别为a2﹣14a+25=0的两个解,∴r1r2=25.故答案为:25点评:此题考查了圆的标准方程,涉及的知识有:切线的性质,以及韦达定理,根据题意满足与x轴,y轴都相切的圆的圆心在第一象限,进而设出相应圆的标准方程是解本题的关键.9.(5分)已知直线kx﹣y+1=0与圆C:x2+y2=4相交于A,B两点,若点M在圆C上,且有(O为坐标原点),则实数k=0.考点:直线与圆相交的性质.专题:计算题.分析:设AB的中点为 D,有=2,即圆心到直线的距离等于半径的一半,由点到直线的距离公式列方程解出实数k的值.解答:解:设AB的中点为D,有=2,||=2||=R=2,∴||=1.由点到直线的距离公式得 1=,解得k=0,故答案为 0.点评:本题考查向量加减法的意义,直线和圆的位置关系,点到直线的距离公式的应用.10.(5分)设α,β为两个不重合的平面,m,n是两条不重合的直线,给出下列四个命题:①若m⊂α,n⊂α,m∥β,n∥β,则α∥β;②若n⊂α,m⊂β,α与β相交且不垂直,则n与m不垂直;③若α⊥β,α∩β=m,m⊥n,则n⊥β;④若m∥n,n⊥α,α∥β,则m⊥β.其中所有真命题的序号是④.考点:平面与平面之间的位置关系.专题:证明题.分析:①若m⊂α,n⊂α,m∥β,n∥β,则α∥β,由面面平行的判定定理判断;②若n⊂α,m⊂β,α与β相交且不垂直,则n与m不垂直,由线线的位置关系判断;③若α⊥β,α∩β=m,m⊥n,则n⊥β,由线面垂直的条件进行判断;④若m∥n,n⊥α,α∥β,则m⊥β,由线面垂直的条件进行判断.解答:解:①若m⊂α,n⊂α,m∥β,n∥β,则α∥β,是一个错误命题,因为m,n 不一定相交;②若n⊂α,m⊂β,α与β相交且不垂直,则n与m不垂直,是错误命题,因为两个不垂直的平面中也存在互相垂直的两条直线;③若α⊥β,α∩β=m,m⊥n,则n⊥β,是错误命题,因为对比面面垂直的性质定理知,少了一个条件即n⊂α;④若m∥n,n⊥α,α∥β,则m⊥β是一个正确命题,因为两条平行线中的一条垂直于一个平面,则它也垂直于另一个平面,再有两个平行平面中的一个平面与一条直线垂直,则另一个平面也与这条直线垂直.故答案为④点评:本题考查平面与平面之间的位置关系,解题的关键是有着较好的空间想像能力以及对命题相关的定义与定理掌握得比较熟练.11.(5分)正三棱锥P﹣ABC高为2,侧棱与底面所成角为45°,则点A到侧面PBC的距离是.考点:点、线、面间的距离计算;直线与平面所成的角.专题:计算题;压轴题.分析:在立体几何中,求点到平面的距离是一个常见的题型,同时求直线到平面的距离、平行平面间的距离及多面体的体积也常转化为求点到平面的距离.本题采用的是“找垂面法”:即找(作)出一个过该点的平面与已知平面垂直,然后过该点作其交线的垂线,则得点到平面的垂线段.设P在底面ABC上的射影为O,则PO=2,且O是三角形ABC的中心,设底面边长为a,设侧棱为b,则斜高.由面积法求A到侧面PBC的距离.解答:解:如图所示:设P在底面ABC上的射影为O,则PO⊥平面ABC,PO=2,且O是三角形ABC的中心,∴BC⊥AM,BC⊥PO,PO∩AM=0∴BC⊥平面APM又∵BC⊂平面ABC,∴平面ABC⊥平面APM,又∵平面ABC∩平面APM=PM,∴A到侧面PBC的距离即为△APM的高设底面边长为a,则设侧棱为b,则斜高.由面积法求A到侧面PBC的距离故答案为:点评:本小题主要考查棱锥,线面关系、直线与平面所成的角、点到面的距离等基本知识,同时考查空间想象能力和推理、运算能力.12.(5分)过圆x2+y2=4内一点P(1,1)作两条相互垂直的弦AC,BD,当AC=BD时,四边形ABCD的面积为6.考点:直线与圆相交的性质;直线的一般式方程与直线的垂直关系.专题:计算题;直线与圆.分析:根据题意画出相应的图形,连接OP,OA,过O作OE⊥AC,OF⊥BD,利用垂径定理得到E、F分别为AC、BD的中点,由AC=BD得到弦心距OE=OF,可得出四边形PEOF为正方形,由P与O的坐标,利用两点间的距离公式求出|OP|的长,即为正方形的对角线长,求出正方形的边长OE,由圆的方程找出半径r,得到OA的长,在直角三角形AOE中,由OA与OE的长,利用勾股定理求出AE的长,进而求出AC与BD的长,再利用对角线互相垂直的四边形面积等于两对角线乘积的一半,即可求出四边形ABCD的面积.解答:解:根据题意画出相应的图形,连接OP,OA,过O作OE⊥AC,OF⊥BD,∴E为AC的中点,F为BD的中点,又AC⊥BD,AC=BD,∴四边形EPOF为正方形,由圆的方程得到圆心O(0,0),半径r=2,又P(1,1),∴|OP|==,∴OE=×=1,又OA=r=2,∴根据勾股定理得:AE==,∴AC=BD=2AE=2,则S四边形ABCD=AC•BD=6.故答案为:6点评:此题考查了直线与圆相交的性质,涉及的知识有:垂径定理,勾股定理,正方形的判定与性质,两点间的距离公式,以及对角线互相垂直的四边形面积求法,当直线与圆相交时,常常由垂径定理根据垂直得中点,然后由弦心距,弦长的一半及圆的半径构造直角三角形,利用勾股定理来解决问题.13.(5分)设m,n∈R,若直线(m+1)x+(n+1)y﹣2=0与圆(x﹣1)2+(y﹣1)2=1相切,则m+n的取值范围是(﹣∞,2﹣2]∪[2+2,+∞).考点:直线与圆的位置关系.专题:直线与圆.分析:由圆的标准方程找出圆心坐标和半径r,由直线与圆相切时,圆心到直线的距离等于圆的半径,利用点到直线的距离公式列出关系式,整理后利用基本不等式变形,设m+n=x,得到关于x的不等式,求出不等式的解集得到x的范围,即为m+n的范围.解答:解:由圆的方程(x﹣1)2+(y﹣1)2=1,得到圆心坐标为(1,1),半径r=1,∵直线(m+1)x+(n+1)y﹣2=0与圆相切,∴圆心到直线的距离d==1,整理得:m+n+1=mn≤()2,设m+n=x,则有x+1≤,即x2﹣4x﹣4≥0,∵x2﹣4x﹣4=0的解为:x1=2+2,x2=2﹣2,∴不等式变形得:(x﹣2﹣2)(x﹣2+2)≥0,解得:x≥2+2或x≤2﹣2,则m+n的取值范围为(﹣∞,2﹣2]∪[2+2,+∞).故答案为:(﹣∞,2﹣2]∪[2+2,+∞).点评:此题考查了直线与圆的位置关系,涉及的知识有:点到直线的距离公式,基本不等式,以及一元二次不等式的解法,利用了转化及换元的思想,当直线与圆相切时,圆心到直线的距离等于圆的半径,熟练掌握此性质是解本题的关键.14.(5分)平面直角坐标系中,已知点A(1,﹣2),B(4,0),P(a,1),N(a+1,1),当四边形PABN的周长最小时,过三点A、P、N的圆的圆心坐标是.考点:圆的标准方程.专题:计算题;直线与圆.分析:根据两点之间的距离公式,列出四边形PABN的周长关于a的表达式,得到x轴上的点(a,0)与(1,3)和(3,1)距离之和最小时,四边形PABN的周长也最小.利用对称思想结合直线方程的求法,可得a值为时,四边形PABN的周长最小.从而得到P、N的坐标,再用直线方程的一般式,求出经过三点A、P、N的圆方程,从而得到圆心的坐标.解答:解:四边形PABN的周长为C=|PA|+|AB|+|BN|+|NP|=+++1=+++1,只需求出+的最小值时的a值.由于+=+,表示x轴上的点(a,0)与(1,3)和(3,1)距离之和,只需该距离之和最小即可.利用对称的思想,可得该距离之和的最小值为(1,﹣3)与(3,1)间的距离,且取得最小的a值为E(1,﹣3)与F(3,1)确定的直线与x轴交点的横坐标,∵直线EF的斜率k==2,∴直线EF方程为y+3=2(x﹣1),化简得y=2x﹣5,令y=0,得x=,所以此时a值为由以上的讨论,得四边形PABN的周长最小时,P(,1),N(,1)设过三点A、P、N的圆方程为x2+y2+Dx+Ey+F=0可得,解之得D=﹣6,E=,F=∴过三点A、P、N的圆方程为x2+y2﹣6x+y+=0,可得圆坐标为(3,﹣)故答案为:(3,﹣)点评:本题以四边形周长取最小值为载体,求经过三点圆的圆心坐标,着重考查了直线的方程、圆方程求法等知识,属于中档题.二、解答题:本大题共6小题,14+14+14+16+16+16=90分.15.(14分)如图,在四面体ABCD中,AB=AC=DB=DC,点E是BC的中点,点F在线段AC上,且.(1)若EF∥平面ABD,求实数λ的值;(2)求证:平面BCD⊥平面AED.考点:平面与平面垂直的判定;直线与平面平行的判定.专题:计算题.分析:(1)因为EF∥平面ABD,所以EF⊂平面ABC,EF∥AB,由此能够求出实数λ的值.(2)因为AB=AC=DB=DC,点E是BC的中点,所以BC⊥AE,BC⊥DE,由此能够证明平面BCD⊥平面AED.解答:解:(1)因为EF∥平面ABD,易得EF⊂平面ABC,平面ABC∩平面ABD=AB,所以EF∥AB,又点E是BC的中点,点F在线段AC上,所以点F为AC的中点,由得;(2)因为AB=AC=DB=DC,点E是BC的中点,所以BC⊥AE,BC⊥DE,又AE∩DE=E,AE、DE⊂平面AED,所以BC⊥平面AED,而BC⊂平面BCD,所以平面BCD⊥平面AED.点评:本题主要考查直线与平面、平面与平面的位置关系,考查空间想象与推理论证能力.16.(14分)已知:无论a取何值,直线(a+2)x+(a+1)y+a=0始终平分半径为2的圆C.(1)求圆C的标准方程;(2)过点A(﹣1,4)作圆C的切线l,求切线l的方程.考点:圆的切线方程;圆的标准方程.专题:直线与圆.分析:(1)求出动直线经过的定点,即圆C的圆心,然后代入圆的标准方程得答案;(2)分切线斜率存在和不存在两种情况讨论,斜率不存在时直接写出切线方程,斜率存在时设出切线方程,由圆心到切线的距离等于圆的半径求解斜率,则切线方程可求.解答:解:(1)由(a+2)x+(a+1)y+a=0,得a(x+y+1)+2x+y=0,联立,解得:.∴直线(a+2)x+(a+1)y+a=0过定点(1,﹣2).即圆的圆心为(1,﹣2).又圆的半径为2.∴圆的方程为:(x﹣1)2+(y+2)2=4;(2)如图,当切线l的斜率不存在时,切线方程为x=﹣1;当切线l的斜率存在时,设切线方程为y﹣4=k(x+1),整理得:kx﹣y+k+4=0.由圆心(1,﹣2)到切线的距离等于圆的半径得:,解得:k=﹣.∴切线l的方程为:.整理得:4x+3y﹣8=0.综上,圆的切线方程为x=﹣1或4x+3y﹣8=0.点评:本题考查圆的标准方程的求法,训练了直线系方程的用法,考查了利用几何法求圆的切线方程,是中档题.17.(14分)如图,在四棱锥P﹣ABCD中,平面PAB⊥平面ABCD,BC∥平面PAD,∠PBC=90°,∠PBA≠90°.求证:(1)AD∥平面PBC;(2)平面PBC⊥平面PAB.考点:直线与平面平行的判定;平面与平面垂直的判定.专题:空间位置关系与距离.分析:(1)由BC∥平面PAD,利用线面平行的性质定理即可得到BC∥AD,再利用线面平行的判定定理即可证明AD∥平面PBC;(2)自P作PH⊥AB于H,由平面PAB⊥平面ABCD,可得PH⊥平面ABCD.于是BC⊥PH.又BC⊥PB,可得BC⊥平面PAB,进而得到面面垂直.解答:证明:(1)因为BC∥平面PAD,而BC⊂平面ABCD,平面ABCD∩平面PAD=AD,所以BC∥AD.因为AD⊄平面PBC,BC⊂平面PBC,所以AD∥平面PBC.(2)自P作PH⊥AB于H,因为平面PAB⊥平面ABCD,且平面PAB∩平面ABCD=AB,所以PH⊥平面ABCD.因为BC⊂平面ABCD,所以BC⊥PH.因为∠PBC=90°,所以BC⊥PB,而∠PBA≠90°,于是点H与B不重合,即PB∩PH=P.因为PB,PH⊂平面PAB,所以BC⊥平面PAB.因为BC⊂平面PBC,故平面PBC⊥平面PAB.点评:本题综合考查了线面、面面垂直的判定与性质定理,线面平行的判定与性质定理,需要较强的推理能力和空间想象能力.18.(16分)如图所示,在棱长为2的正方体ABCD﹣A1B1C1D1中,E、F分别为DD1、DB的中点.(1)求证:EF∥平面ABC1D1;(2)求证:EF⊥B1C;(3)求三棱锥的体积.考点:直线与平面平行的判定;棱柱、棱锥、棱台的体积;直线与平面垂直的性质.专题:计算题.分析:(1)欲证EF∥平面ABC1D1,根据直线与平面平行的判定定理可知只需证EF与平面ABC1D1内一直线平行,连接BD1,在△DD1B中,E、F分别为D1D,DB的中点,根据中位线定理可知EF∥D1B,满足定理所需条件;(2)先根据线面垂直的判定定理证出B1C⊥平面ABC1D1,而BD1⊂平面ABC1D1,根据线面垂直的性质可知B1C⊥BD1,而EF∥BD1,根据平行的性质可得结论;(3)可先证CF⊥平面EFB 1,根据勾股定理可知∠EFB1=90°,根据等体积法可知=V C﹣B1EF,即可求出所求.解答:解:(1)证明:连接BD1,如图,在△DD1B中,E、F分别为D1D,DB的中点,则平面ABC1D1.(2)(3)∵CF⊥平面BDD1B1,∴CF⊥平面EFB1且,∵,,∴EF2+B1F2=B1E2即∠EFB1=90°,∴==点评:本题主要考查了线面平行的判定,以及线面垂直的性质和三棱锥体积的计算,同时考查了空间想象能力、运算求解能力、转化与划归的思想,属于中档题.19.(16分)在平面直角坐标系xOy中,曲线y=x2﹣6x+1与坐标轴的交点都在圆C上.(Ⅰ)求圆C的方程;(Ⅱ)若圆C与直线x﹣y+a=0交与A,B两点,且OA⊥OB,求a的值.考点:圆的标准方程;直线与圆相交的性质.专题:直线与圆.分析:(Ⅰ)法一:写出曲线与坐标轴的交点坐标,利用圆心的几何特征设出圆心坐标,构造关于圆心坐标的方程,通过解方程确定出圆心坐标,进而算出半径,写出圆的方程;法二:可设出圆的一般式方程,利用曲线与方程的对应关系,根据同一性直接求出参数,(Ⅱ)利用设而不求思想设出圆C与直线x﹣y+a=0的交点A,B坐标,通过OA⊥OB建立坐标之间的关系,结合韦达定理寻找关于a的方程,通过解方程确定出a的值.解答:解:(Ⅰ)法一:曲线y=x2﹣6x+1与y轴的交点为(0,1),与x轴的交点为(3+2,0),(3﹣2,0).可知圆心在直线x=3上,故可设该圆的圆心C为(3,t),则有32+(t﹣1)2=(2)2+t2,解得t=1,故圆C的半径为,所以圆C的方程为(x﹣3)2+(y﹣1)2=9.法二:圆x2+y2+Dx+Ey+F=0x=0,y=1有1+E+F=0y=0,x2 ﹣6x+1=0与x2+Dx+F=0是同一方程,故有D=﹣6,F=1,E=﹣2,即圆方程为x2+y2﹣6x﹣2y+1=0(Ⅱ)设A(x1,y1),B(x2,y2),其坐标满足方程组,消去y,得到方程2x2+(2a﹣8)x+a2﹣2a+1=0,由已知可得判别式△=56﹣16a﹣4a2>0.在此条件下利用根与系数的关系得到x1+x2=4﹣a,x1x2=①,由于OA⊥OB可得x1x2+y1y2=0,又y1=x1+a,y2=x2+a,所以可得2x1x2+a(x1+x2)+a2=0②由①②可得a=﹣1,满足△=56﹣16a﹣4a2>0.故a=﹣1.点评:本题考查圆的方程的求解,考查学生的待定系数法,考查学生的方程思想,直线与圆的相交问题的解决方法和设而不求的思想,考查垂直问题的解决思想,考查学生分析问题解决问题的能力,属于直线与圆的方程的基本题型.20.(16分)如图,在平面直角坐标系xOy中,已知圆C1:(x+1)2+y2=1,圆C2:(x﹣3)2+(y﹣4)2=1.(1)若过点C1(﹣1,0)的直线l被圆C2截得的弦长为,求直线l的方程;(2)设动圆C同时平分圆C1的周长、圆C2的周长.①证明:动圆圆心C在一条定直线上运动;②动圆C是否经过定点?若经过,求出定点的坐标;若不经过,请说明理由.考点:圆与圆的位置关系及其判定;直线与圆的位置关系.专题:计算题;综合题;直线与圆.分析:(1)设过直线l方程:y=k(x+1),根据垂直于弦的直径的性质,结合点到直线的距离公式列式,可解出k的值,从而得到直线l的方程;(2)①由题意,圆心C到C1、C2两点的距离相等,由此结合两点间的距离公式建立关系式,化简整理得x+y﹣3=0,即为所求定直线方程;②根据题意设C(m,3﹣m),得到圆C方程关于参数m的一般方程形式,由此可得动圆C经过圆x2+y2﹣6y﹣2=0与直线x﹣y+1=0的交点,最后联解方程组,即可得到动圆C经过的定点坐标.解答:解:(1)设过点C1(﹣1,0)的直线l方程:y=k(x+1),化成一般式kx﹣y+k=0 ∵直线l被圆C2截得的弦长为,∴点C2(3,4)到直线l的距离为d==,解之得k=或由此可得直线l的方程为:4x﹣3y+4=0或3x﹣4y+3=0.(2)①设圆心C(x,y),由题意,得CC1=CC2,即=,化简整理,得x+y﹣3=0,即动圆圆心C在定直线x+y﹣3=0上运动.②设圆C过定点,设C(m,3﹣m),则动圆C的半径为=,于是动圆C的方程为(x﹣m)2+(y﹣3+m)2=1+(m+1)2+(3﹣m)2,整理,得x2+y2﹣6y﹣2﹣2m(x﹣y+1)=0,由得或所以动圆C经过定点,其坐标为,.点评:本题求被定圆截得定长的弦所在直线方程,并探索动圆圆心在定直线上的问题.考查了直线与圆的方程、直线与圆和圆与圆的位置关系,考查学生运算能力.。

高二物理上学期10月月考试卷(含解析)-人教版高二全册物理试题

高二物理上学期10月月考试卷(含解析)-人教版高二全册物理试题

2014-2015学年某某玉林市育才中学高二〔上〕月考物理试卷〔10月份〕一、此题共12小题;每一小题4分,共48分.其中1-8题为单项选择题,9-12题为多项选择题,在多项选择题给出的四个选项中,全部选对的得4分,选不全的得2分,有选错或不答的得0分.1.〔4分〕〔2014秋•玉州区校级月考〕关于E=和E=两个公式,如下说法中正确的答案是〔〕A.E=中的场强E是电荷q产生的B.E=中的场强E是电荷Q产生的C.E=中的F表示单位正电荷的受力D.E=和E=都只对点电荷适用2.〔4分〕〔2013秋•大连期末〕电场中有一点P,如下说法中正确的有〔〕A.假设放在P点的试探电荷的电荷量减半,如此P点的场强减半B.假设P点没有试探电荷,如此P点场强为零C.P点的场强越大,如此同一试探电荷在P点受到的电场力越大D.P点的场强方向为就是放在该点的试探电荷所受电场力的方向3.〔4分〕〔2011•惠阳区校级学业考试〕把一个带正电的金属小球A跟同样的不带电的金属球B相碰,两球都带等量的正电荷,这从本质上看是因为〔〕A.A球的正电荷移到B球上B.B球的负电荷移到A球上C.A球的负电荷移到B球上D.B球的正电荷移到A球上4.〔4分〕〔2014秋•蒙自县校级月考〕在真空中有两个点电荷,带电量分别为q1、q2,相距为L,它们之间的作用力为F,如下情况正确的答案是〔〕A.假设它们所带的电量不变,距离变为2L,如此它们之间的作用力变为2FB.假设它们所带的电量不变,距离变为,如此它们之间的作用力变为2FC.假设它们之间的距离不变,电量都变为原来的2倍,如此它们之间的作用力变为4F D.假设它们之间的距离不变,电量都变为原来的一半,如此它们之间的作用力变为4F 5.〔4分〕〔2010•泉州模拟〕某带电粒子仅在电场力作用下由A点运动到B点,电场线和粒子在A点的初速度方向,与运动轨迹如下列图,可以判定〔〕A.粒子在A点的加速度小于它在B点的加速度B.粒子在A点的动能小于它在B点的动能C.粒子在A点的电势能小于它在B点的电势能D.A点的电势低于B点的电势6.〔4分〕〔2014秋•玉州区校级月考〕如下列图,两个等量异种电荷在真空中相隔一定距离,O O′代表两点电荷连线的中垂面,在两点电荷所在的某一平面上取图示1、2、3三点,如此这三点的电势大小关系是〔〕A.φ1>φ2>φ3B.φ2>φ1>φ3C.φ2>φ3>φ1D.φ3>φ2>φ17.〔4分〕〔2012•河北模拟〕一带正电的粒子在电场中做直线运动的v﹣t图象如下列图,t1、t2时刻分别经过M、N两点,运动过程中粒子仅受电场力作用,如此如下判断正确的答案是〔〕A.该电场可能是由某正点电荷形成的B.M点的电势高于N点的电势C.从M点到N点的过程中,电势能逐渐增大D.带电粒子在M点所受电场力大于在N点所受电场力8.〔4分〕〔2013春•汉阳区校级期末〕电荷从静止开始只在电场力作用下的运动〔最初阶段的运动〕,如此电荷〔〕A.总是从电势高的地方移到电势低的地方B.总是从电场强度大的地方移到电场强度小的地方C.总是从电势能大的地方移到电势能小的地方D.总是从电势能小的地方移到电势能大的地方9.〔4分〕〔2012秋•杜集区校级期中〕关于U AB=和W AB=qU AB的理解,正确的答案是〔〕A.电场中的A、B两点的电势差和两点间移动电荷的电量q成反比B.在电场中A、B两点间沿不同路径移动一样电荷,路径长时W AB较大C.U AB与q、W AB无关,甚至与是否移动电荷都没有关系D.W AB与q、U AB无关,与电荷移动的路径无关10.〔4分〕〔2013秋•灵武市校级期中〕关于电场线的说法,正确的答案是〔〕A.电场线的方向,就是电荷受力的方向B.正电荷只在电场力作用下一定沿电场线运动C.电场线越密的地方,同一电荷所受电场力越大D.静电场的电场线不可能是闭合的11.〔4分〕〔2014秋•凉山州期末〕虚线a、b和c是某静电场中的三个等势而,它们的电势分别为φa、φb和φc,φa>φb>φc.一带正电的粒子射入电场中,其运动轨迹如实线KLMN 所示,可知〔〕A.粒子从K到L的过程中,电场力做负功B.粒子从L到M的过程中,电场力做负功C.粒子从K到L的过程中,电势能增加D.粒子从L到M的过程中,动能减少12.〔4分〕〔2009•某某一模〕如下列图,MN是一负点电荷产生的电场中的一条电场线.一个带正电的粒子〔不计重力〕从a到b穿越这条电场线的轨迹如图中虚线所示.如下结论正确的答案是〔〕A.带电粒子从a到b过程中动能逐渐减小B.负点电荷一定位于M点左侧C.带电粒子在a点时具有的电势能大于在b点时具有的电势能D.带电粒子在a点的加速度小于在b点的加速度二.填空题〔每空2分,共14分〕13.〔4分〕〔2012秋•东阳市校级期中〕真空中有两个静止的点电荷A、B,其带电荷量q A=2q B,当两者相距0.01m时,相互作用力为1.8×10﹣2N,如此其带电量分别为q A=C,q B=C.14.〔8分〕〔2013•东昌府区模拟〕电量为2×10﹣6C的正点电荷放入电场中A点,受到作用力为4×10﹣4N,方向向右,如此该点的场强为N/c,方向.假设把另一电荷放在该点受到力为2×10﹣4N,方向向左,如此这个电荷的电量大小为C,是〔填正或负〕电荷.15.〔2分〕〔2014秋•玉州区校级月考〕真空中有两个点电荷,它们的电量分别为Q和﹣Q,相距为L,如此们连线中点处的电场强度为.三.此题共3小题,共38分.解答应写出必要的文字说明、示意图、方程式和重要演算步骤.只写出最后答案的不能得分.有数值计算的问题,答案中必须明确写出数值和单位.16.〔11分〕〔2011秋•连江县校级期中〕如下列图,质量为2.0克的带负电小球A用绝缘细绳悬挂,将带电量为Q=4.0×10﹣6C的带电小球B靠近A,两个带电小球在同一高度相距30cm,绳与竖直方向恰成45°角.求:〔l〕B球受的库仑力;〔2〕A球带电量.17.〔13分〕〔2014秋•玉州区校级月考〕如下列图,在匀强电场中,有A.B两点,它们间距为2cm,两点的连线与场强方向成60°角.将一个电量为2×10﹣5C的电荷由A移到B,其电势能减少了0.1J.如此:〔1〕在此过程中,电场力对该电荷做了多少功?〔2〕A.B两点的电势差U AB为多少?〔3〕匀强电场的场强为多大?18.〔14分〕〔2012春•枣强县校级期末〕有一带电量q=﹣3×10﹣6C的点电荷,从电场中的A 点移到B点时,抑制电场力做功6×10﹣4J.从 B点移到C点时电场力做功9×10﹣4J.问:〔1〕AB、BC、CA间电势差各为多少?〔2〕如以B点电势为零,如此A、C两点的电势各为多少?电荷在A、C两点的电势能各为多少?2014-2015学年某某玉林市育才中学高二〔上〕月考物理试卷〔10月份〕参考答案与试题解析一、此题共12小题;每一小题4分,共48分.其中1-8题为单项选择题,9-12题为多项选择题,在多项选择题给出的四个选项中,全部选对的得4分,选不全的得2分,有选错或不答的得0分.1.〔4分〕〔2014秋•玉州区校级月考〕关于E=和E=两个公式,如下说法中正确的答案是〔〕A.E=中的场强E是电荷q产生的B.E=中的场强E是电荷Q产生的C.E=中的F表示单位正电荷的受力D.E=和E=都只对点电荷适用考点:电场强度;点电荷的场强.专题:电场力与电势的性质专题.分析:用场强公式的使用条件和对其的理解分析选项即可.公式E=为电场的定义式,公式E=是点电荷的场强公式.解答:解:AC、公式E=为电场的定义式,适用于任意电场,公式中的q为试探电荷,F为试探电荷所受的电场力.故AC错误;B、公式E=是点电荷的场强公式,Q是场源电荷,所以E是电荷Q产生的,故B正确.D、公式E=为电场的定义式,使用于任何电场;公式E=是点电荷的场强公式,适用于真空中点电荷形成的电场,其中Q是场源电荷,r是到场源电荷的距离.故D错误.应当选:B.点评:解题关键明确公式E=为电场的定义式,公式E=是点电荷的场强公式,与各物理量的含义.2.〔4分〕〔2013秋•大连期末〕电场中有一点P,如下说法中正确的有〔〕A.假设放在P点的试探电荷的电荷量减半,如此P点的场强减半B.假设P点没有试探电荷,如此P点场强为零C.P点的场强越大,如此同一试探电荷在P点受到的电场力越大D.P点的场强方向为就是放在该点的试探电荷所受电场力的方向考点:电场强度.分析:此题应抓住场强反映电场本身的性质,与放入电场中的试探电荷无关,场强的方向与正试探电荷在该点所受的电场力方向一样.解答:解:A、场强是表示电场本身性质的物理量,由电场本身决定,与试探电荷无关,所以当试探电荷的电荷量减半时,P点的场强不变,故A错误.B、由于场强由电场本身决定,与试探电荷无关,所以当P点没有试探电荷,P点的场强不变,故B错误.C、由E=得,F=qE,q一定时F与E成正比,如此知P点的场强越大,同一试探电荷在P点受到的电场力越大,故C正确.D、P点的场强方向为就是放在该点的正试探电荷所受电场力的方向,与P放在该点的负试探电荷所受电场力的方向相反,故D错误.应当选:C.点评:电场强度是描述电场性质的物理量,可根据E=是比值法定义来理解E的物理意义.要知道电场力既与电荷有关,也与电场有关.3.〔4分〕〔2011•惠阳区校级学业考试〕把一个带正电的金属小球A跟同样的不带电的金属球B相碰,两球都带等量的正电荷,这从本质上看是因为〔〕A.A球的正电荷移到B球上B.B球的负电荷移到A球上C.A球的负电荷移到B球上D.B球的正电荷移到A球上考点:电荷守恒定律.专题:电场力与电势的性质专题.分析:金属是自由电子和金属正离子组成的,正离子只做热振动,不移动,而自由电子可以移动.根据这个分析接触带电的实质.解答:解:A、D金属上正电荷只做无规如此的热振动,不能发生移动,更不可能从一个球移动到另一个球.故A、D错误.B、C,B球原来不带电,与A球接触后,由于A球上正电荷对电子的吸引,电子从B球转移到A球上,原来中性的B球就带正电.电子带负电,所以B带正电是由于B球上的负电荷移到A球上的缘故.故B正确,C错误.应当选B.点评:此题运用根本知识分析物理现象的能力.4.〔4分〕〔2014秋•蒙自县校级月考〕在真空中有两个点电荷,带电量分别为q1、q2,相距为L,它们之间的作用力为F,如下情况正确的答案是〔〕A.假设它们所带的电量不变,距离变为2L,如此它们之间的作用力变为2FB.假设它们所带的电量不变,距离变为,如此它们之间的作用力变为2FC.假设它们之间的距离不变,电量都变为原来的2倍,如此它们之间的作用力变为4F D.假设它们之间的距离不变,电量都变为原来的一半,如此它们之间的作用力变为4F考点:库仑定律.专题:电场力与电势的性质专题.分析:在真空中有两个点电荷间的作用力遵守库仑定律,根据库仑定律,运用比例法求解.解答:解:根据库仑定律,如此有:F=A、当电量不变,距离变为2L时,库仑力变为F.故A错误.B、假设它们所带的电量不变,距离变为,库仑力变为4F.故B错误.C、假设它们之间的距离不变,电量都变为原来的2倍,如此它们之间的作用力变为,F C==4F,故C正确.D、假设它们之间的距离不变,电量都变为原来的一半,如此它们之间的作用力变为,F D=F,故D错误.应当选:C.点评:此题考查运用比例法解决物理问题的能力,技巧在于用一样的量表示作用力,然后求出比例关系.5.〔4分〕〔2010•泉州模拟〕某带电粒子仅在电场力作用下由A点运动到B点,电场线和粒子在A点的初速度方向,与运动轨迹如下列图,可以判定〔〕A.粒子在A点的加速度小于它在B点的加速度B.粒子在A点的动能小于它在B点的动能C.粒子在A点的电势能小于它在B点的电势能D.A点的电势低于B点的电势考点:电势能;电势.专题:电场力与电势的性质专题.分析:电场线密的地方电场的强度大,电场线疏的地方电场的强度小.根据带电粒子轨迹的弯曲方向判断出电场力的方向,根据电场力做功正负,判断动能和电势能的变化;沿电场线的方向,电势降低.解答:解:A、由电场线分布情况可知,A处的电场线疏,所以A处的电场强度小,粒子受的电场力小,加速度也就小,故A正确;B、C粒子受到的电场力指向曲线弯曲的内侧,所以受到的电场力的方向是沿电场线向上的,所以粒子从A到B的过程中,电场力做正功,电荷的电势能减小,动能增加,所以粒子在A点的动能小于它在B点的动能,故B正确,C错误;D、沿电场线的方向,电势降低,所以A点的电势大于B点的电势,故D错误.应当选AB点评:此题要根据轨迹的弯曲方向判断电场力的方向,根据电场力的做功情况,判断动能和电势能的大小.用电场线可以形象地描述电场的强弱和方向,电场线的方向反映了电势的上下.6.〔4分〕〔2014秋•玉州区校级月考〕如下列图,两个等量异种电荷在真空中相隔一定距离,OO′代表两点电荷连线的中垂面,在两点电荷所在的某一平面上取图示1、2、3三点,如此这三点的电势大小关系是〔〕A.φ1>φ2>φ3B.φ2>φ1>φ3C.φ2>φ3>φ1D.φ3>φ2>φ1考点:电势.分析:根据等量异种电荷连线的中垂线是一条等势线,顺着电场线方向电势降低,判断电势的上下.解答:解:如下列图,实线是两个等量异号的点电荷电场线分布,虚线是等势面分布.根据沿着电场线方向电势降低,如此有:φ1>φ2>φ3应当选:A点评:对于等量异种点电荷电场线的分布情况是熟悉,要知道电场线与等势线相互垂直,沿着电场线方向电势降低.7.〔4分〕〔2012•河北模拟〕一带正电的粒子在电场中做直线运动的v﹣t图象如下列图,t1、t2时刻分别经过M、N两点,运动过程中粒子仅受电场力作用,如此如下判断正确的答案是〔〕A.该电场可能是由某正点电荷形成的B.M点的电势高于N点的电势C.从M点到N点的过程中,电势能逐渐增大D.带电粒子在M点所受电场力大于在N点所受电场力考点:带电粒子在匀强电场中的运动;匀变速直线运动的图像;电势能.专题:电场力与电势的性质专题.分析:由速度时间图象可知:粒子在电场中做匀减速直线运动,加速度是一个定值,所以电场力不变,是匀强电场,根据动能定理可知,电场力做负功,电势能增加,又由于是正电荷,电势也增加.解答:解:A、由速度时间图象可知:粒子在电场中做匀减速直线运动,加速度是一个定值,所以电场力不变,是匀强电场,所以不可能是由某正点电荷形成的,故A、D错误;B、从M到N的运动过程中速度减小,根据动能定理可知电场力做负功,电势能增加,又由于是正电荷,所以电势也增加,故M点的电势低于N点的电势,故B错误,C正确.应当选C点评:此题主要抓住速度时间图象的特点,知道粒子做匀减速直线运动,知道电场力做功与电势能的关系,难度不大,属于根底题.8.〔4分〕〔2013春•汉阳区校级期末〕电荷从静止开始只在电场力作用下的运动〔最初阶段的运动〕,如此电荷〔〕A.总是从电势高的地方移到电势低的地方B.总是从电场强度大的地方移到电场强度小的地方C.总是从电势能大的地方移到电势能小的地方D.总是从电势能小的地方移到电势能大的地方考点:电势能;电势.专题:电场力与电势的性质专题.分析:此题需要根据电场力做功的特点判断两点电势能的上下,知道电场力做正功,电势能减小.解答:解:A、如果是负电荷,运动方向与场强相反,故电势会增大,故A错误;B、静止开始的电荷会沿着电场力的方向运动,但此方向的场强不一定减小,故B错误;C、由于电荷只受电场力,因此电场力做正功,电势能减小,所以εA>εB,故C正确,D错误.应当选C.点评:此题比拟简单,根底性强;要加强理解电场力和电场强度关系,电势能和电场力做功关系.9.〔4分〕〔2012秋•杜集区校级期中〕关于U AB=和W AB=qU AB的理解,正确的答案是〔〕A.电场中的A、B两点的电势差和两点间移动电荷的电量q成反比B.在电场中A、B两点间沿不同路径移动一样电荷,路径长时W AB较大C.U AB与q、W AB无关,甚至与是否移动电荷都没有关系D.W AB与q、U AB无关,与电荷移动的路径无关考点:电势差.专题:电场力与电势的性质专题.分析:电场中的A、B两点间的电势差和两点间移动电荷的电量q和电场力做功无关;电场中A、B两点间的电势差是一定的,在电场中A、B两点移动不同的电荷,电场力的功W AB和电量q成正比.解答:解:A、电势差公式U AB=是比值定义法,电场中的A、B两点间的电势差和两点间移动电荷的电量q和电场力做功均无关.故A错误;B、根据公式W AB=qU AB,在电场中A、B两点移动不同的电荷,电场力的功W AB和电量q成正比,与路径无关.故B错误;C、电势差公式U AB=是比值定义法,U AB与q、W AB无关,甚至与是否移动电荷都没有关系,故C正确;D、电场力做功与路径无关,电场力的功W AB和电量q成正比,即W AB与q成正比,但与电荷移动的路径无关,故D错误;应当选:C.点评:此题要抓住电势差是反映电场本身性质的物理量,与试探电荷无关,可抓住比值定义的共性理解电势差的定义式.10.〔4分〕〔2013秋•灵武市校级期中〕关于电场线的说法,正确的答案是〔〕A.电场线的方向,就是电荷受力的方向B.正电荷只在电场力作用下一定沿电场线运动C.电场线越密的地方,同一电荷所受电场力越大D.静电场的电场线不可能是闭合的考点:电场线.专题:电场力与电势的性质专题.分析:解答此题需要正确理解电场线特点:电场线是为了形象的描述电场的强弱和方向而假想的曲线,从正电荷或无穷远出发,终止于无穷远或负电荷,是不闭合的;正电荷受力方向和电场力方向一样,负电荷受力方向和电场线相反.解答:解:A、电场线的方向,是正电荷所受电场力的方向,与负电荷所受电场力的方向相反,故A错误.B、正电荷如果沿电场线运动必须满足的条件:①电场线是直线;②合外力沿电场线方向;所以正电荷只在电场力的作用下不一定沿电场线运动,故B错误.C、电场线越密,场强越大,如此电荷所受的电场力越大,故C正确.D、电场线从正电荷出发到负电荷或无穷远终止,是不闭合的,故D正确.应当选CD.点评:要正确理解电场线和电场强度、电势之间关系,此题易错的是B选项,同学们可以通过列举实例来帮助理解.11.〔4分〕〔2014秋•凉山州期末〕虚线a、b和c是某静电场中的三个等势而,它们的电势分别为φa、φb和φc,φa>φb>φc.一带正电的粒子射入电场中,其运动轨迹如实线KLMN 所示,可知〔〕A.粒子从K到L的过程中,电场力做负功B.粒子从L到M的过程中,电场力做负功C.粒子从K到L的过程中,电势能增加D.粒子从L到M的过程中,动能减少考点:电势;电势能.专题:电场力与电势的性质专题.分析:根据电势的上下确定电场强度的方向,从而确定出粒子所受的电场力的方向,判断电场力做功的正负,根据电场力做功正负比拟动能的大小和电势能的大小.解答:解:A、C、据题φa>φb>φc,可知这个电场是正点电荷产生的,电场强度方向a指向c,粒子从K到L的过程,电场力方向与速度方向的夹角大于90°,如此电场力做负功,电势增加.故AC正确.B、D、从图中可以看出,从L到M的过程中,粒子先向圆心运动,后离开圆心,电场力先做负功,后做正功,动能先减小后增加,电势能先增大减小.故BD错误.应当选:AC.点评:解决此题的关键知道电势的上下与电场强度的关系,以与知道电场力做功与电势能的关系.12.〔4分〕〔2009•某某一模〕如下列图,MN是一负点电荷产生的电场中的一条电场线.一个带正电的粒子〔不计重力〕从a到b穿越这条电场线的轨迹如图中虚线所示.如下结论正确的答案是〔〕A.带电粒子从a到b过程中动能逐渐减小B.负点电荷一定位于M点左侧C.带电粒子在a点时具有的电势能大于在b点时具有的电势能D.带电粒子在a点的加速度小于在b点的加速度考点:电势能;匀强电场中电势差和电场强度的关系.专题:电场力与电势的性质专题.分析:解答此题的突破口是根据粒子的运动轨迹确定其所受电场力方向,从而确定电场线MN 的方向以与负点电荷的位置,然后根据负点电荷周围电场分布情况,进一步解答.解答:解:A、由于该粒子只受电场力作用且做曲线运动,电场力指向轨迹内侧,电场力方向大致向右,对带电粒子做做正功,其动能增加.故A错误.B、带正电的粒子所受电场力向右,电场线由M指向N,说明负电荷在直线N点右侧.故B错误.C、电场力对带电粒子做正功,电势能减小,如此带电粒子在a点的电势能大于在b点的电势能.故C正确.D、a点离点电荷较远,a点的电场强度小于b点的电场强度,带电粒子在a点的小于在b点的电场力,根据牛顿第二定律得知,带电粒子在a点的加速度小于在b点的加速度.故D正确.应当选CD.点评:依据带电粒子的运动轨迹确定其所受电场力方向是解决带电粒子在电场中运动问题的突破口,然后可进一步根据电场线、电场力做功等情况确定电势、电势能的上下变化情况二.填空题〔每空2分,共14分〕13.〔4分〕〔2012秋•东阳市校级期中〕真空中有两个静止的点电荷A、B,其带电荷量q A=2q B,当两者相距0.01m时,相互作用力为1.8×10﹣2N,如此其带电量分别为q A=C,q B=C.考点:库仑定律.专题:电场力与电势的性质专题.分析:根据库仑定律公式F=k和条件q A=2q B列式求解即可.解答:解:真空中有两个静止的点电荷,相距r=0.01m,相互作用力F=1.8×10﹣2N,根据库仑定律,有:代入数据,有:1.8×10﹣2=9×109×根据题意,有:q A=2q B联立解得:q A=,q B=;故答案为:,.点评:此题关键是明确根据库仑定律列式求解,计算此题要记住静电力常量.14.〔8分〕〔2013•东昌府区模拟〕电量为2×10﹣6C的正点电荷放入电场中A点,受到作用力为4×10﹣4N,方向向右,如此该点的场强为200 N/c,方向向右.假设把另一电荷放在该点受到力为2×10﹣4N,方向向左,如此这个电荷的电量大小为1×10﹣6CC,是负〔填正或负〕电荷.考点:电场强度.专题:电场力与电势的性质专题.分析:电场强度等于试探电荷所受电场力与其电荷量的比值,方向与正电荷所受电场力方向一样,与负电荷所受电场力方向相反.同一点电场强度不变,由电场力F=qE求解电荷量.解答:解:A点的场强E==N/C=200N/C,方向:向右.把另一电荷放在该点时,场强不变.由F′=q′E得q′==C=1×10﹣6C因电场力方向与场强方向相反,如此该电荷带负电荷.故此题答案是:200;向右;1×10﹣6C;负点评:此题对电场强度和电场力的理解能力.电场强度是反映电场本身的性质的物理量,与试探电荷无关.而电场力既与电场有关,也与电荷有关.15.〔2分〕〔2014秋•玉州区校级月考〕真空中有两个点电荷,它们的电量分别为Q和﹣Q,相距为L,如此们连线中点处的电场强度为.考点:电场强度.专题:电场力与电势的性质专题.分析:根据点电荷的场强公式分别求出等量异种电荷在中点的电场强度,再根据场强的叠加进展合成.解答:解:两个等量异种点电荷在中点产生的电场强度大小相等,方向一样.大小为E1=,如此合场强E=2E1=.故答案为:.点评:解决此题的关键掌握点电荷的场强公式E=,以与知道场强是矢量,合成分解遵循平行四边形定如此三.此题共3小题,共38分.解答应写出必要的文字说明、示意图、方程式和重要演算步骤.只写出最后答案的不能得分.有数值计算的问题,答案中必须明确写出数值和单位.。

高二10月月考数学(附答案)

高二10月月考数学(附答案)

山西大学附中2014—2015学年第一学期高二(10月)月考数学试题一.选择题(每小题3分,满分30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.圆心在)1,2(-上,半径为3的圆的标准方程为( ) A. 3)1()2(22=++-y xB. 9)1()2(22=++-y xC. 3)1()2(22=-++y xD. 9)1()2(22=-++y x 2.经过两点(4,21)A y +,(2,3)B -的直线的倾斜角为34π,则y = ( ) A.-1 B.-3 C.0 D.23.已知倾斜角为α的直线l 与直线220x y -+=平行,则tan 2α的值( ) A .45B .43 C .34 D .234.若直线04)2()52(=+-++y a x a 与直线01)3()2(=-++-y a x a 互相垂直,则a 的值等于( )A . 2B .-2C .2,-2D .2,0,-2 5.已知三点()3,1A 、()2,B k -、()8,11C 共线,则k 的取值是(A.6-B.7-C.8- D .9- 6.如右图,直线123,,l l l 的斜率分别为123,,k k k ,则A.123k k k <<B.312k k k <<C.321k k k <<D.132k k k <<7、经过点(1,1)M 的直线与坐标轴所围成的三角形面积为3,这样的直线共有( ) A .4条 B .3条 C .2条 D .1条8.点(,)M x y 在函数28y x =-+的图象上,当[2,5]x ∈时,11y x ++的取值范围是( ) A .1[,2]6- B .5[0,]3C .15[,]63- D .[2,4]9.设点(2,3),(3,2)A B -,若直线20ax y ++=与线段AB 没有交点,则a 的取值范围是( )A. 54(,)(,)23-∞-⋃+∞ B. 45(,)32-C. 54(,)23-D. 45(,)(,)32-∞-⋃+∞10.从点(,3)P m 向圆22(2)(2)1x y +++=作切线,切线长最小值等于( ) A. 2 B. 4 C. 5D. 二.填空题(每题4分,满分16分,把答案填在题中横线上)11.设y kx z +=,其中实数y x ,满足⎪⎩⎪⎨⎧≤--≥+-≥-+04204202y x y x y x ,若z 的最大值为12,则实数=k ________。

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合阳中学2014--2015年度高二年级第一次月考试题第Ⅰ卷 (选择题 共60分)一、单项选择题(每小题只有一个正确选项,请将正确选项填涂在答题卡上。

每小题4分,共40分)1.两个放在绝缘架上的相同金属球,相距r ,球的半径比r 小得多,带电荷量大小分别为q和3q ,相互作用的斥力为3F . 现让这两个金属球相接触,然后分开,仍放回原处,则它们之间的相互作用力将变为A .F B.4F 3C .4FD .以上三个选项之外的一个值 2.如图所示,P 、Q 是两个电荷量相等的异种电荷,在其电场中有a 、b 、c 三点在一条直线上,平行于P 、Q 的连线,b 在P 、Q 连线的中垂线上,ab=bc,下列说法正确的是A.ϕa>ϕb>ϕcB. ϕa>ϕc>ϕbC.Ea>Eb>EcD.Eb>Ea>Ec3.如图所示,实线表示电场线,虚线表示只受电场力作用的带电粒子的运动轨迹.粒子先经过M 点,再经过N 点.可以判定A .粒子在M 点受到的电场力大于在N 点受到的电场力B .M 点的电势高于N 点的电势C .粒子带负电D .粒子在M 点的动能大于在N 点的动能4.a 、b 、c 、d 是匀强电场中的四个点,它们正好是一个矩形的四个顶点.电场线与矩形所在平面平行.已知a 点的电势为20 V ,b 点的电势为24V ,d 点的电势为4 V ,所示.由此可知c 点的电势为A.4 VB.8 VC.12 VD.24 V5.如图所示,一带电小球A,用绝缘细线拴住系在O 点,在O 点正下方固定一个带电小球B,A 球被排开.当细线与竖直方向夹角为α时系统静止,由于支持B 球的绝缘柄漏电,在B 球电荷量缓慢减少的过程中,发现α逐渐减小,那么该过程中细线的拉力应该如何变化(A 、B 看作点电荷)A.不变B.变大C.变小D.无法判断6. 在点电荷 Q 形成的电场中有一点A ,当一个-q 的检验电荷从电场的无限远处被移到电场中的A 点时,电场力做的功为W ,则检验电荷在A 点的电势能及电场中A 点的电势分别为A.q W W A A =-=ϕ,E B.q W W A A -==ϕ,E C.q W W A A ==ϕ,E D.q W W A A -=-=ϕ,E7.用控制变量法,可以研究影响平行板电容器电容的因素(如图所示).设两极板正对面积为S ,极板间的距离为d ,静电计指针偏角为θ.实验中,极板所带电荷量不变,若 A .保持S 不变,增大d ,则θ变大B .保持S 不变,增大d ,则θ变小C .保持d 不变,减小S ,则θ变小D .保持d 不变,减小S ,则θ不变8.如图所示,a 、b 是两个带有同种电荷的小球,现用两根绝缘细线将它们悬挂于真空中同一点.已知两球静止时,它们离水平地面的高度相等,线与竖直方向的夹角分别为α、β,且α<β.现有以下判断,其中正确的是A.a 球的质量一定大于b 球的质量B.a 球的电荷量一定大于b 球的电荷量C.a 球对b 球的库伦力一定大于b 球对a 球的库伦力D.以上说法均不正确9.空间有平行于纸面的匀强电场.一电荷量为-q 的质点(重力不计),在恒定拉力F 的作用下沿虚线由M 匀速运动到N ,如右图所示,已知力F 和MN 间夹角为θ,MN 间距离为d ,则( )A .MN 两点的电势差为Fdcos θqB .匀强电场的电场强度大小为Fdcos θqC .带电小球由M 运动到N 的过程中,电势能减少了Fdcos θD .若要使带电小球由N 向M 做匀速直线运动,则F 必须反向10.两块大小、形状完全相同的金属平板平行放置,构成一平行板电容器,与它相连接的电路如图所示,接通开关K ,电源即给电容器充电( )A .保持K 接通,减小两极板间的距离,则两极板间电场的电场强度减小B .保持K 接通,在两极板间插入一块介质,则极板上的电荷量减小C .断开K ,减小两极板间的距离,则两极板间的电势差减小D .断开K ,在两极板间插入一块介质,则两极板间的电势差增大二、多项选择题(每题给出的四个选项中,有多个选项正确,选对的得4分,选对但不全的得2分,有选错或不选的得0分)11.关于静电场,下列结论普遍成立的是A .电场强度大的地方电势不一定高B .电场中任意两点之间的电势差只与这两点的场强有关C .在正电荷或负电荷产生的静电场中,场强方向都指向电势降低最快的方向D .将正点电荷从场强为零的点移动到场强为零的另一点,电场力做功为零12.以下说法正确的是:A 、q F E =是电场中某点的电场强度的定义式,是用比值法定义的物理量,场强由电场本身决定,与F 和q 无关B 、由q E p =ϕ可知, 电场中某点的电势ϕ与q 成反比 C 、由d E U ab ⋅=可知匀强电场中任意两点a 、b 间距离越大,则两点间电势差也一定越大 D 、2r kQE =是真空中点电荷场强的计算式,E 与Q 成正比,与r 的平方成反比13.如右图所示,用电池对电容器充电,电路a 、b 之间接有一灵敏电流表,两极板之间有一个电荷q 处于静止状态,现将两极板的间距变大,则( )A .电荷将向上加速运动B .电荷将向下加速运动C .电流表中将有从a 到b 的电流D .电流表中将有从b 到a 的电流14.如图所示为空间某一电场的电场线,a 、b 两点为其中一条竖直向下的电场线上的两点,该两点的高度差为h ,一个质量为m 、带电荷量为+q的小球从a 点静止释放后沿电场线运动到b 点时速度大小为3gh ,则下列说法中正确的是( )A .质量为m 、带电荷量为+q 的小球从a 点静止释放后沿电场线运动到b 点的过程中动能增加量等于电势能减少量B .a 、b 两点的电势差U =mgh 2qC .质量为m 、带电荷量为+2q 的小球从a 点静止释放后沿电场线运动到b 点时速度大小为ghD .质量为m 、带电荷量为-q 的小球从a 点静止释放后沿电场线运动到b 点时速度大小为gh15.如图甲所示,两平行金属板竖直放置,左极板接地,中间有小孔,右极板电势随时间变化的规律如图乙所示,电子原来静止在左极板小孔处(不计电子的重力).下列说法正确的是A .从t =0时刻释放电子,电子始终向右运动,直到打到右极板上B .从t =0时刻释放电子,电子可能在两板间来回振动C .从t =T/4时刻释放电子,电子可能在两板间来回振动,也可能打到右极板上D .从t =3T/8时刻释放电子,电子必将打到左极板上第II 卷(非选择题,共40分)三.计算题(本题共3小题,共40分。

解答应写出必要的文字说明.方程式和重要的演算步骤,只写最后答案的不给分,有数值计算的题,答案中必须明确写出数值和单位。

)16.(10分)在一个水平面上建立x 轴,在过原点O 垂直于x 轴的平面的右侧空间有一个匀强电场,场强大小E =6.0×105 N/C ,方向与x 轴正方向相同.在O 处放一个电荷量q =-5.0×10-8 C ,质量m =1.0×10-2 kg 的绝缘物块.物块与水平面间的动摩擦因数μ=0.20,沿x 轴正方向给物块一个初速度v 0=2.0 m/s ,如图所示.(g 取10 m/s2)试求:(1)物块向右运动的最大距离.(2)物块最终停止的位置.17.(15分)如图所示,带电荷量为Q 的正点电荷固定在倾角为30°的光滑绝缘斜面底部的C 点,斜面上有A 、B 两点,且A 、B 和C 在同一直线上,A 和C 相距为L ,B 为AC 中点.现将一带电小球从A 点由静止释放,当带电小球运动到B 点时速度正好又为零,已知带电小球在A 点处的加速度大小为g 4,静电力常量为k ,求: (1)小球运动到B 点时的加速度大小;(2)B 和A 两点间的电势差(用Q 和L 表示).18.(15分)如图所示,有一束电子流在经电压U=5000V 的加速电压加速后,在距两极板等距处垂直进入平形板间的匀强电场,若两板间距为d=1.0cm ,板长 L=5.0cm ,要使电子能从两板间飞出,两个极板上最多能加多大电压?参考答案及评分标准一、单项选择题(每小题4分,共40分)1C 2A 3B 4B 5A 6A 7A 8A 9A 10C三.计算题(本题共3小题,共32分。

解答应写出必要的文字说明.方程式和重要的演算步骤,只写最后答案的不给分,有数值计算的题,答案中必须明确写出数值和单位。

)16.(10分)20(1)设物块向右运动的最大距离为x m ,由动能定理得-μmgx m -E |q |x m =0-12m v 20可求得x m =0.4 m(2)因Eq >μmg ,物块不可能停止在O 点右侧,设最终停在O 点左侧且离O 点为x 处. 由动能定理得E |q |x m -μmg (x m +x )=0可得x =0.2 m17. 解析:(1)带电小球在A 点时:mg sin 30°-k QqL 2=ma A带电小球在B 点时:kQq ⎝ ⎛⎭⎪⎫L 22-mg sin 30°=ma B 且a A =g 4,可解得:a B =g 2(2)由A 点到B 点应用动能定理得:mg sin 30°·L 2-U BA ·q =0 由mg sin 30°-k Qq L 2=m ·a A =m g 4可得:14mg =k Qq L 2,可求得:U BA =kQ L答案:(1)g 2 (2)kQ L18. (15分)加速过程,由动能定理: 2021mV Ue =进入偏转电场,有:t V L ⋅=0mdUe m F a ==偏转距离:221at y =; 能飞出的条件为:2d y ≤; 联立解得:V LUd U 222100.42⨯=≤'。

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