南溪一中外国语实验学校答案

四川省南溪一中外国语实验学校2018年春期第一次阶段性考试初2018级物理试卷

南溪一中外国语实验学校2018年春期第1次阶段性考试初2016级物理试卷（满分100分 60分钟完卷命题：马英审题：牟从俊）一、单选题（每题3分，共30分）1.下列关于重力的说法中不正确的是（）A．在斜面上向下滚动的物体所受的重力方向仍是竖直向下的B．—投出的篮球上升过程中受重力，下落过程中也受重力作用C．地面附近的物体在失去支持时，要向地面降落，这是由于物体受到重力作用的缘故D．物体的重心一定是在物体上2. 下列哪个物体所受的重力大小可能是50N( )A. 一个小学生B. 一辆汽车C. 一支铅笔D. 一个装满书的书包3.航天员在完全失重的太空轨道舱中进行体能锻炼,下述活动中可采用的是( )A. 举哑铃B. 在跑步机上跑步C. 用弹簧拉力器健身D. 引体向上4.一个在地面上滚动的足球，速度越来越小，最后停下来，是因为（）A．它的惯性越来越小B．摩擦阻力改变了它的运动状态C．它没有受到力的作用D．一定是它受到的阻力越来越大5.关于运动和力，以下说法中正确的是( ) A. 物体不受力的作用时，一定保持静止状态B. 速度大小不变的物体，一定不受力的作用C. 做曲线运动的物体，一定受到力的作用D. 只要有力作用在物体上，它的运动状态就一定改变6.如图所示，当人推墙时，人将向后退，对此现象的一些说法中正确的是（）A．人能后退一段距离是因为仍然受到墙的作用力B．人能后退一段距离是因为人具有惯性C．人停下来后惯性就消失了D．人对墙的力与墙对人的力是一对平衡力7. 将一本书放在水平桌面上．当书静止时，书受到的平衡力是（）A．书受到的重力和书对桌面的压力B．书受到的重力和桌面对书的支持力C．书对桌面的压力和桌面对书的支持力D．桌子受到的重力和书对桌面的压力8.如图中的四个实例，目的是为了减小摩擦的是（）9.下列常见的交通警示语中，与惯性无关的是( )A. 酒后不驾车B. 驾车须系安全带C. 行车保持一定车距D. 雨后路滑，减速慢行10.如图所示，小刚用水平推力推静止在水平地面上的讲台桌，用不同的力推，结果都没有推动．则下列说法正确的是（）A. 讲台桌不受摩擦力B. 推力小于讲台桌的重力大小C. 推力小于地面对讲台桌的摩擦力D. 推力等于地面对讲台桌的摩擦力二、不定项选择题（每题3分，共6分）11.下列说法错误的是（）A．踢出去的足球能继续飞行是因为受到惯性力的作用B．静止在水平桌面上的书受到的重力和书对桌面的压力是一对平衡力C．绕地球飞行的飞船受到非平衡力的作用D．列车匀速运动时，火车头拉车厢的力大于车厢所受的阻力12．根据如图所示，可以判断小车运动状态变化的情况是（）A. 可能向左加速B. 可能向右加速C. 可能向左减速D. 可能向右减速三、填空题（每空2分，共20分）13．小跳板跳水是我国传统的体育项目，水平居世界前列。

2019年人教版英语八年级下册 Unit 4 单元检测附答案

Unit 4I．单项选择1.Tom's mother is angry ____ him because he failed in the exam.A.toB.forC.withD.on2.(2017江西宜春丰城期中)We should think more of others if we want to ____ them.A.hear ofB.get on well withC.get ready forD.hear from3.(2018湖南湘西中考)-Hi, Bob. What club do you want to join?-I want to join a sports club.I can ____ very well.A.play the footballB.play a footballC.play football4.(2017安徽阜阳陈梦中学期中)The math problem was so difficult. But Mike ____ without any help.A.worked it outB.gave it upC.found it outD.put it out5.(2018黑龙江八五二农场中学期中) ____ your opinion, who is better at English,Tom or Jack?A.OnB.InC.AtD.To6.(2018江西鄱阳二中期中)-I have too much housework to do at home!- ____ ask your husband for help?A.You couldB.Why don'tC.Why notD.How about7.(2018贵州施秉三中月考)Every year driving after drinking wine（酒） ____ a lot of traffic accidents.A.happensB.providesC.causesD.results8.(2017贵州安顺中考)-Excuse me, sir, smoking ____ in the gas station.-Oh,I'm awfully sorry.A.doesn't allowB.is allowedC.aren't allowedD.isn't allowed9.-I'm always____ before the exam.What should I do?-Take it easy.You can take a deep breath and smile.A.relaxedB.nervousC.surprisedD.interested10.If you want to know more information about the coming party, please ____ the website .A.set upB.look throughC.pick outD.turn off11.（2017浙江温州中考） ____ the scientists have done lots of research on Mars, there is still much waiting to be discovered.A.IfB.SinceC.UnlessD.Though12.（2017山东德州夏津双语中学月考）Sally will go to Hangzhou by train because she is afraid____.A.to flyingB.that flyC.of flyingD.that flying13.（2018四川凉山州中考） ____ his right hand was hurt, he wrote slowly.A.Because; soB.Because;／C.Although; butD.Although;／14.(2018河北承德兴隆期中)They went to the playground and practiced running____they could win the running race.A.untilB.so thatC.as soon asD.unless15.（2018四川南溪一中外国语实验学校月考）My cousin has problems ____ English. In fact, the best way of learning English is ____ it.A.learn; to useB.learning；useC.learning；to useⅡ.完形填空A few days ago,I sat on the sofa watching TV. Just then,I got a(n) 16 from a friend of mine.I haven't seen him 17 a very long time. We talked about our schooldays on the phone; then he started talking about his 18 ．His mother was badly ill in hospital. She couldn't sleep at night and often 19 to herself. My friend was angry 20 her and asked his mother 21 talking. Since then, his mother didn't say anything. The doctor said she had a kind of mental disease （心理疾病）．She couldn't look after herself like a normal person. My friend was very sad. He thought it was his fault（过错）．My friend 22 like a baby on the telephone. He said that he could d0 23 if his mother became better.Do you know 24 0ur parents love us and care for us all the time? I think we should 25 love our parents and take care of them.A good relationship with your parents can make you be a better and happier person. It is worth having a try !16.A.letter B.e-mail C.call D.message17.A.in B.for C.at D.of18.A.mother B .father C.brother D.sister19.A.talked B.talk C.to talk D.talking20.A.to B.about C.for D.with21.A.stop B.to stop C.stopped D.not to stop22.A.cried B.shouted ughed D.heard23.A.something B.anything C.nothing D.none24.A.what B.whom C.where D.that25.A.too B.either C.also D.elseⅢ.阅读理解AAn old man was sitting on the sofa with Mike, his 45- year-old son. Suddenly a dove(鸽子)landed on the ground.The father asked his son,"What is this?"The son replied,"It is a dove."After a few minutes, the father asked his son for the second time," What is this?"The son said, " Father, I have just told you. It's a dove. "After a little while, the old father asked his son for the third time," What is this?"This time Mike could not control his anger and shouted,"It's a dove! A dove! Why do you keep asking me the same question again and again? I have told you so many times‘IT IS A DOVE ! ' Don't you understand this?"The old man silently took out an old diary, turned to a page and showed it to Mike. Though a little impatient(不耐烦的) , Mike began to read it."Today my little son aged three was sitting with me on the sofa. When a dove landed on the ground, my son asked me what it was. I smiled at him, said it was a dove and hugged him. After a while Mike asked me again and I did the same. Pointing to the same dove, little Mike asked me what it was 23 times and I kept on answering his question and hugging him every time."Something gently touched Mike's heart. His face turned red with shame for beingso impatient with his father and he hugged him tightly(紧紧地) .Your parents have given you many things in their lifetime, but you may not realize that until they are gone.26.Why did the old man ask his son the question again and again?A.He didn't know the dove.B.He liked to ask questions.C.He couldn't remember anything.D.He tried to teach his son something.27.How many times did the father ask his son the same question ?A.Twice.B.Three times.C.Five times.D.Twenty-three times.28.What did the father do after little Mike asked him the question ?A.Shouting at him.B.Hugging him.C.Keeping silent.D.Being angry with him.29.Why did Mike's face turn red?A.He was shy.B.He felt surprised.C.He felt shamed.D.He was afraid of his father.30. What really touched Mike's heart according to the passage ?A.His father's diary.B.His father's love.C.His father's answers.D.His father's hugs.BDo you always focus on studying and getting "A" grades in school? Most Chinese students work really hard. But in the United States, you might be considered a bookworm(书呆子) if you cannot socialize(社交). Socializing is as important as your grades. If you just study all the time and don't socialize, your life won't be complete. So, how does one socialize with students in the US?Lots of high schools often have soccer games during the autumn term. I didn't know anything about soccer, but I joined some of the soccer games in order to have fun with my friends. I thought I could learn the rules from others. However, to my surprise, some American students don't even know the rules but still go to the games in order to socialize. They cheer for the soccer players and have fun together. The other common way to socialize is to join after-school clubs. You can choose clubs that you are interested in and make a lot of new friends. For example, one of my friends started a sketch(素描) club. I was interested, so I joined the club. There I met lots of students who were also interested in sketching. We soon became friends with each other.Socializing is an important thing in the US. But grades are still important, too. A complete student should have the ability to balance(平衡) his or her studying and socializing.31.You might be considered _______ if you cannot socialize in the United States.A.a good studentB.a bookwormC.a lazy studentD.a hard-working student32. When do lots of high schools have soccer games in the US?A.During the autumn term.B.During the summer term.C.During the spring term.D.During the winter term.33.How many ways to socialize are mentioned in the passage?A.Five.B.Four.C.Three.D.Two.34.Which of the following is NOT TRUE according to the passage?A.Most Chinese students work really hard.B.Not all American students who go to the soccer games know the rules.C.The writer joined some of the soccer games in order to play soccer.D.If you want to make lots of new friends, you can join clubs that you are interested in.35.What is the best title of the passage?A.How to make new friendsB.Balance studying and socializingC.Socializing is not as important as your gradesD.Socializing is the most important thing in the USIV .任务型阅读Are your parents often angry with you? Or you always disagree with your parents.Maybe the relationships between you and your parents are terrible. It's difficult to make your home a happy and healthy place. In fact, you can change the situations by the following keys.Respect(尊重) It's important to show your respect and care about your parents' feelings. Though you have disagreements(分歧) , at least try to understand whatever they are trying to tell you.You shouldn't keep your own thoughts only.Communication You can communicate with your parents in a polite way.You may not get what you want,but explaining your thoughts calmly and rationally(理性地) may show your parents that you are no longer a kid,not just a kid.Trust How can your parents build trust in you? It depends on what you do. For example,if you get home late without calling first,next time your parents may not believe you.To earn(赢得) their trust,you must pay attention to the ways you do things instead of fighting with them. It will make your life much easier.Spending time together Some teens find that sharing time together can build trust and communication. Your parents may be interested in going shopping,hanging out and playing cards with you.Spending time together will drive away the" black cloud" hanging over your home.Your parents give all their love to you. Why not try these ways actively to own a happy family as you want?36.____ 37.____ 38.____ 39.____ 40.____V．情景交际（2017甘肃天水中考）从下面方框中选出能填入空白处的最佳选项补全对话。

四川省南溪县第一中学外国语实验学校2018届九年级第一次阶段考试物理试题

南溪一中外国语实验学校2019年春期第1次阶段性考试初2019级物理试卷（满分80分 60分钟完卷命题：马鸿翎审题：陈雪涛）一、选择题（共8小题，第7题第8题为多选题，每小题3分，满分24分）1、下列声现象的说法中，正确的是（）A. 发声的物体不一定在振动B. “禁止鸣笛”是在声源处减弱噪声C. 声音在真空中的传播速度为340m/sD. “震耳欲聋”说明声音的音调高2、下列自然现象中物态变化与霜的形成相同的是（）A. 寒冷的冬天，湖面结冰了B. 夏天的清晨，小草上出现了露珠C. 春天，冰雪消化D. 在我国北方的冬天，玻璃窗上有时会出现冰花3、如图所示的四种现象中，由于光的折射形成的是（）A水中铅笔. B.水中倒影.C林间光柱. D.立竿见影.4、对于静止放置在水平桌面上的物理书，下列说法正确的是（）A. 书受到重力和书对桌面的压力是一对平衡力B. 书受到重力和书对桌面的压力是相互作用力C. 书受到重力和桌面对书的支持力是相互作用力D. 书受到重力和桌面对书的支持力是一对平衡力5、下列说法中，正确的是（）A. 物体的速度越大，惯性就越大B. 钻木取火是通过做功的方式改变物体内能的C. 近视眼需要用凸透镜进行矫正D. 磁场和磁感线都是客观存在的物质6、智能手机在现代生活中的作用越来越重要，频繁的使用会导致它的电能消耗很快。

当手机“电量”所剩无几时，通常可以将其设置成“省电模式”来延长使用时间。

这是通过以下哪种方式实现的（）A.增大电池电压B.增加总功率C.减小总功率D.降低散热能力7、工人师傅用下图所示的滑轮组，将重为800N的重物缓慢匀速竖直提升3m，人对绳的拉力F为500N，不计绳重和滑轮转轴处的摩擦，则错误的是（）A.绳子自由端移动的距离为9mB.动滑轮的重力为200NC.人通过滑轮组做的有用功为1500JD.滑轮组的机械效率为53.3%8、下图中，甲、乙、丙、丁是四幅实验装置图，下列说法不正确的是（）A．甲实验说明闭合电路的一部分导体在磁场中做切割磁感线运动时，导体中就产生电流B．乙实验说明磁场能产生电流C．丙实验说明同名磁极相互吸引，异名磁极相互排斥D．丁实验说明机械能转化为电能二、填空题（共4小题，每空2分，每小题4分，满分16分）9、如图所示的电路中，电源电压U=6V恒定不变，R1=5Ω，R2=10Ω，开关闭合后，通过R1的电流为A，R2两端的电压为 V。

初一英语半期试题

南溪一中外国语实验学校英语试卷I.听力测试。

（20分）A．情景反应。

（7分）( )1. A. He is from Japan. B. He speaks Japanese.C. I’m Chinese.( )2. A. Turn left. B. It’s next to a supermarket.C. Yes, there is.( )3. A. Yes, very much. B. No, I don’t .C. Because they’re very cute.( )4. A. He’s a student. B. He wants to be an actor.C. He works in a hospital.( )5. A. I’m watching TV. B. That sounds good.C. Let’s go at six o’clock.( )6. A. No, she isn’t . B. She’s reading a book.C. She is a student.( )7. A. Sunny. B. Rainy C. Terrible.B.对话理解。

（8分）( )8. A. Sunny. B. Rainy. C. Windy.( )9. A. Playing basketball. B. Playing soccer.C. Playing volleyball.( )10. A. Read a book. B. Watch TV. C. Sleep.( )11. A. In London B. In Tokyo. C. In Shanghai. ( )12. A. To the bank. B. To the shop. C. To the post office. ( )13. A. Math. B. English. C. Chinese.( )14. A. In Canada. B. In Australia. C. In America. ( )15. A. TV. B. A video. C. A movie.B．短文理解。

2019年人教版英语八年级下册 Unit 4 单元检测附答案

Unit 4I．单项选择1.Tom's mother is angry ____ him because he failed in the exam.A.toB.forC.withD.on2.(2017江西宜春丰城期中)We should think more of others if we want to ____ them.A.hear ofB.get on well withC.get ready forD.hear from3.(2018湖南湘西中考)-Hi, Bob. What club do you want to join?-I want to join a sports club.I can ____ very well.A.play the footballB.play a footballC.play football4.(2017安徽阜阳陈梦中学期中)The math problem was so difficult. But Mike ____ without any help.A.worked it outB.gave it upC.found it outD.put it out5.(2018黑龙江八五二农场中学期中) ____ your opinion, who is better at English,Tom or Jack?A.OnB.InC.AtD.To6.(2018江西鄱阳二中期中)-I have too much housework to do at home!- ____ ask your husband for help?A.You couldB.Why don'tC.Why notD.How about7.(2018贵州施秉三中月考)Every year driving after drinking wine（酒） ____ a lot of traffic accidents.A.happensB.providesC.causesD.results8.(2017贵州安顺中考)-Excuse me, sir, smoking ____ in the gas station.-Oh,I'm awfully sorry.A.doesn't allowB.is allowedC.aren't allowedD.isn't allowed9.-I'm always____ before the exam.What should I do?-Take it easy.You can take a deep breath and smile.A.relaxedB.nervousC.surprisedD.interested10.If you want to know more information about the coming party, please ____ the website .A.set upB.look throughC.pick outD.turn off11.（2017浙江温州中考） ____ the scientists have done lots of research on Mars, there is still much waiting to be discovered.A.IfB.SinceC.UnlessD.Though12.（2017山东德州夏津双语中学月考）Sally will go to Hangzhou by train because she is afraid____.A.to flyingB.that flyC.of flyingD.that flying13.（2018四川凉山州中考） ____ his right hand was hurt, he wrote slowly.A.Because; soB.Because;／C.Although; butD.Although;／14.(2018河北承德兴隆期中)They went to the playground and practiced running____they could win the running race.A.untilB.so thatC.as soon asD.unless15.（2018四川南溪一中外国语实验学校月考）My cousin has problems ____ English. In fact, the best way of learning English is ____ it.A.learn; to useB.learning；useC.learning；to useⅡ.完形填空A few days ago,I sat on the sofa watching TV. Just then,I got a(n) 16 from a friend of mine.I haven't seen him 17 a very long time. We talked about our schooldays on the phone; then he started talking about his 18 ．His mother was badly ill in hospital. She couldn't sleep at night and often 19 to herself. My friend was angry 20 her and asked his mother 21 talking. Since then, his mother didn't say anything. The doctor said she had a kind of mental disease （心理疾病）．She couldn't look after herself like a normal person. My friend was very sad. He thought it was his fault（过错）．My friend 22 like a baby on the telephone. He said that he could d0 23 if his mother became better.Do you know 24 0ur parents love us and care for us all the time? I think we should 25 love our parents and take care of them.A good relationship with your parents can make you be a better and happier person. It is worth having a try !16.A.letter B.e-mail C.call D.message17.A.in B.for C.at D.of18.A.mother B .father C.brother D.sister19.A.talked B.talk C.to talk D.talking20.A.to B.about C.for D.with21.A.stop B.to stop C.stopped D.not to stop22.A.cried B.shouted ughed D.heard23.A.something B.anything C.nothing D.none24.A.what B.whom C.where D.that25.A.too B.either C.also D.elseⅢ.阅读理解AAn old man was sitting on the sofa with Mike, his 45- year-old son. Suddenly a dove(鸽子)landed on the ground.The father asked his son,"What is this?"The son replied,"It is a dove."After a few minutes, the father asked his son for the second time," What is this?"The son said, " Father, I have just told you. It's a dove. "After a little while, the old father asked his son for the third time," What is this?"This time Mike could not control his anger and shouted,"It's a dove! A dove! Why do you keep asking me the same question again and again? I have told you so many times‘IT IS A DOVE ! ' Don't you understand this?"The old man silently took out an old diary, turned to a page and showed it to Mike. Though a little impatient(不耐烦的) , Mike began to read it."Today my little son aged three was sitting with me on the sofa. When a dove landed on the ground, my son asked me what it was. I smiled at him, said it was a dove and hugged him. After a while Mike asked me again and I did the same. Pointing to the same dove, little Mike asked me what it was 23 times and I kept on answering his question and hugging him every time."Something gently touched Mike's heart. His face turned red with shame for beingso impatient with his father and he hugged him tightly(紧紧地) .Your parents have given you many things in their lifetime, but you may not realize that until they are gone.26.Why did the old man ask his son the question again and again?A.He didn't know the dove.B.He liked to ask questions.C.He couldn't remember anything.D.He tried to teach his son something.27.How many times did the father ask his son the same question ?A.Twice.B.Three times.C.Five times.D.Twenty-three times.28.What did the father do after little Mike asked him the question ?A.Shouting at him.B.Hugging him.C.Keeping silent.D.Being angry with him.29.Why did Mike's face turn red?A.He was shy.B.He felt surprised.C.He felt shamed.D.He was afraid of his father.30. What really touched Mike's heart according to the passage ?A.His father's diary.B.His father's love.C.His father's answers.D.His father's hugs.BDo you always focus on studying and getting "A" grades in school? Most Chinese students work really hard. But in the United States, you might be considered a bookworm(书呆子) if you cannot socialize(社交). Socializing is as important as your grades. If you just study all the time and don't socialize, your life won't be complete. So, how does one socialize with students in the US?Lots of high schools often have soccer games during the autumn term. I didn't know anything about soccer, but I joined some of the soccer games in order to have fun with my friends. I thought I could learn the rules from others. However, to my surprise, some American students don't even know the rules but still go to the games in order to socialize. They cheer for the soccer players and have fun together. The other common way to socialize is to join after-school clubs. You can choose clubs that you are interested in and make a lot of new friends. For example, one of my friends started a sketch(素描) club. I was interested, so I joined the club. There I met lots of students who were also interested in sketching. We soon became friends with each other.Socializing is an important thing in the US. But grades are still important, too. A complete student should have the ability to balance(平衡) his or her studying and socializing.31.You might be considered _______ if you cannot socialize in the United States.A.a good studentB.a bookwormC.a lazy studentD.a hard-working student32. When do lots of high schools have soccer games in the US?A.During the autumn term.B.During the summer term.C.During the spring term.D.During the winter term.33.How many ways to socialize are mentioned in the passage?A.Five.B.Four.C.Three.D.Two.34.Which of the following is NOT TRUE according to the passage?A.Most Chinese students work really hard.B.Not all American students who go to the soccer games know the rules.C.The writer joined some of the soccer games in order to play soccer.D.If you want to make lots of new friends, you can join clubs that you are interested in.35.What is the best title of the passage?A.How to make new friendsB.Balance studying and socializingC.Socializing is not as important as your gradesD.Socializing is the most important thing in the USIV .任务型阅读Are your parents often angry with you? Or you always disagree with your parents.Maybe the relationships between you and your parents are terrible. It's difficult to make your home a happy and healthy place. In fact, you can change the situations by the following keys.Respect(尊重) It's important to show your respect and care about your parents' feelings. Though you have disagreements(分歧) , at least try to understand whatever they are trying to tell you.You shouldn't keep your own thoughts only.Communication You can communicate with your parents in a polite way.You may not get what you want,but explaining your thoughts calmly and rationally(理性地) may show your parents that you are no longer a kid,not just a kid.Trust How can your parents build trust in you? It depends on what you do. For example,if you get home late without calling first,next time your parents may not believe you.To earn(赢得) their trust,you must pay attention to the ways you do things instead of fighting with them. It will make your life much easier.Spending time together Some teens find that sharing time together can build trust and communication. Your parents may be interested in going shopping,hanging out and playing cards with you.Spending time together will drive away the" black cloud" hanging over your home.Your parents give all their love to you. Why not try these ways actively to own a happy family as you want?36.____ 37.____ 38.____ 39.____ 40.____V．情景交际（2017甘肃天水中考）从下面方框中选出能填入空白处的最佳选项补全对话。

四川省宜宾市南溪县第一中学校2018-2019学年高二英语下学期期末试卷含解析

四川省宜宾市南溪县第一中学校2018-2019学年高二英语下学期期末试卷含解析一、选择题1. Ladies and gentlemen, please turn off your cell phones or laptops. The plane .A. takes offB. is taking offC. has taken offD. would take off参考答案：B2. We all believe it is Tom himself, rather than his teachers who _______ for his bad academic performance at school.A. are to blameB. are to be blamedC. is to blameD. is to be blamed参考答案：C3. Don't respond to any e-mails ____personal information, no matter how official they look.A. searchingB.requesting C.asking D. questioning参考答案：B4. I made a rule to exercise everyday.A itB thatC whichD what参考答案：A5. Is it in the factory ______ this type of cars are produced?A. whichB. whereC. thatD./参考答案：C6. ________，I have to put it away and focus my attention on study this week.A. However the story is amusingB. No matter amusing the story isC. However amusing the story isD. No matter how the story is amusing参考答案：C试题分析：however＝no matter how，引导让步状语从句，后接“adj./adv.＋主＋谓”结构。

四川省南溪一中外国语实验学校2018-2019学年上期初2018级第1次阶段性考试地理试题卷含参考答案

南溪一中外国语实验学校2017-2018学年上期初2016级第1次阶段性考试地理试题卷考试时间60分钟，共100分出题人：刘娟审题人:苏红注意：请将答案一律写在答题卡上，在试题卷上答题一律无效。

一、选择题（75分，每题3分）1、下列关于秦岭—淮河一线南北两侧地理特征的叙述，正确的是 ( ) A ．该线以北耕地以水田为主 B ．该线以南居民以面食为主C ．该线以南年降水量在800毫米以下D ．该线以北1月平均气温在0 ℃以下2、我国北方地区（） A ．平原广阔，土地肥沃，耕地集中连片 B ．降水集中，水源充足 C ．耕地以水田为主，是重要的稻米产区 D ．主要气象灾害是寒潮和台风3、关于北方地区和南方地区的说法，不正确的是 ( )A ．南方地区的植被以常绿阔叶林为主B ．北方地区农田多为旱地，一年一熟或两年三熟C ．南方地区1月的平均气温一般高于0 ℃D ．北方民居比南方民居的屋顶坡度大读右边“东北地区示意图”，完成4-5题。

4、对图中A 山脉东西两侧分布的地形区叙述正确的是 ( ) A ．华北平原和内蒙古高原 B ．东北平原和内蒙古高原 C ．华北平原和黄土高原 D ．东北平原和黄土高原5、东北重工业基地的形成最主要是依托（） A ．廉价的劳动力资源 B ．先进的高科技条件 C ．发达的水运条件 D ．丰富的矿产资源黄土高原是世界上最大的黄土堆积区，读黄土高原示意图，完成6-8题。

6、图中序号对应正确的地理事物名称分别是( ) A. ①太行山、②乌鞘岭、③秦岭、④长城 B. ①太行山、②阴山、③乌鞘岭、④秦岭 C. ①乌鞘岭、②太行山、③阴山、④秦岭 D. ①秦岭、②太行山、③阴山、④乌鞘岭7、目前黄土高原水土流失严重的自然原因是( )A. 毁林开荒B. 多寒潮和台风C.植被稀少、土质疏松，降水集中D. 修筑梯田 8、针对该地地表现状，应采取的治理措施是( )①植树种草，增加植被覆盖率 ②合理安排生产活动，退耕还林、还草 ③杜绝放牧，禁止发展畜牧业 ④整修梯田、修筑挡土坝等工程 A. ①②③ B. ②③④ C. ①②④ D. ①③④9、作为古都之一的北京，保留有众多的古建筑、园林和特色街区。

2018年春期2016级半期英语测试题

南溪一中外国语实验学校2017-2018学年下期初2016级半期考试英语试题卷考试时间120分钟，共110分命题人：杨进财审题人：汤琳第Ⅰ卷选择题（满分85分）第一部分听力理解(共三节，满分20分)第一节听对话选图（共5小题，每小题1分，共5分）听对话，选择符合题意的图片，并将答案写在题前的括号内。

每段对话听两遍。

()1.What’s the matter with the man?A. B.C.()2.Which book has Linda read twice?A. B. C.()3.Where did Mary go last weekend?A. B.C.()4.What animal did the man see at the Night Safari?A. B.C.()5.What does the boy do after dinner every day?A. B.C.第二节对话理解（共10小题，每小题1分，共10分）听下面七段对话，从题中所给的A 、B 、C 三个选项中选出一个最佳选项，并将答案写在题前的括号内。

每段对话听两遍。

听第一段对话，回答第6小题。

()6.What did Ben play in P.E.class?A.Soccer.B.Basketball.C.Volleyball.听第二段对话，回答第7小题。

()7.How often should Mark take the medicine?A.Once a day.B.Twice a day.C.Three times a day.听第三段对话，回答第8小题。

()8.Where are the speakers?A.In the dining hall.B.In the classroom.C.In the cinema.听第四段对话，回答第9小题。

()9.Why has Sarah gone to Nashville?A.To visit Dale.B.To take singing lessons.C.To see a singer.听第五段对话，回答第10小题。

南溪一中英语答案

南溪一中2013～2014学年上期高中2013级半期考试英语学科试题卷Key:听力：1-5ABBCA 6-10CACAC 11-15AABAC 16-20CCBBC单选：21-25AADDD 26-30AACDB完形31-35 BDACD; 36-40 AACDB; 41-45 CADBB; 46-50 ADDBA阅读理解：51-54 BBCA 55-58 DBDD 59-62 BCAB59-62 DDCB 67-70 BCBC单词拼写: 1. energetic 2. intelligent 3. journey 4. trained 5. local 6. survey7. conclusion 8. access 9. encouragement 10. importance改错:Yesterday, when I visited my cousin, I find he went to the bathroom very often. He didn’t lookfoundlike alright. “What is wrong about you?” I asked him. “I think I had too many milk thiswith muchmorning,” he said. I asked him how. He said, “My mother went to a supermarket yesterdaywhyafternoon. When she saw some milk on sale, she bought three big bottle. We had to finish allbottlesmilk this morning because it was no longer fresh.” I knew what she meant. My aunt wanted tothe hesave some money through buy the cheap milk. I real don’t think she should have done that.buying really书面表达：Dear Mr. Taylor,I’m Li Hua, president of the Students’ Union of our school. I am writing to invite you to join our English Club.In order to provide more opportunities for us students to practice spoken English and make our school life colorful, the English club in our school is to open next week. It lasts an hour and a half (4:30pm----6:00pm) on Fridays. Members will gather at the garden near the school library and communicate in English with each other. You are expected to talk with us freely and answer some questions. Besides, we hope you can introduce western cultures to us. I am sure it will be great fun.All of us are expecting you to come.Yours,Li Hua。

四川省自贡市南溪第一中学2022-2023学年高一英语上学期期末试题含解析

四川省自贡市南溪第一中学2022-2023学年高一英语上学期期末试题含解析一、选择题1. I believe it’s for the reason___ he had to drop out of school and left his hometown.A. whyB. howC. whatD. that参考答案：D略2. We _______ rush ----- there is plenty of time.A. can’tB. mustn’tC. ought not toD. don’t have to参考答案：D3. I’m not good at Russian. I only _____ a little of it when I toured Russia last year.A. took upB. picked upC. brought upD. came up参考答案：B4. ---George is a wise person.---But in my opinion, he is _______ than wise.A. bravestB. braverC. more braveD. less brave参考答案：C5. He was taken away by the police. He ______ for a robber.A. must be mistakenB. was being mistakenC. must mistakeD. must have been mistaken参考答案：D6. Li ping as well as his classmates who _____late for class was criticized by Mrs. Liu.A. wasB. wereC. doD. did参考答案：B7. Is there ____ to help you?A. anything we can doB. something can doC. anything which we can doD. nothing we can't do参考答案：A8. The salesman spent about three hours ______ the housewife ______ the top quality of his cleaning products.A. persuading; ofB. persuading; aboutC. to persuade; ofD. to persuade; about参考答案：A9. Don’t be angry . In this country ruled by law, he won’t _____ what he has done.A get away fromB get away withC put up withD come up with参考答案：B略10. Ladies and gentlemen, please fasten your seat belts. The plane .A takes offB is taking offC has taken offD took off参考答案：B11. There is no such thing as a normal human, but there is such a thing as a “normal” you, __________ you’re completely yourself and you love yourself deeply.A. whereB. whoC. thatD. which参考答案：A12. He missed ______ gold in the high jump, but will get _______ second chance in the long jump.A. the; theB. 不填；aC. a；不填D. the; a参考答案：D13. －How is everything about birthday party, Tom?－You may rely on all will go on as planned.A．that B．it C．it what D．it that参考答案：D14. --- What do you think of the new manager of your department?--- Oh, he is ________ manager who’s pleasant to work with. I mean, it is ______ pleasure to work with him.A. the; \B. a; aC. a; theD. \; a参考答案：B15. Relaxed and unhurried, he__________ that he would walk through the narrow streets of Tangier. Only in that way would he be able to read the omens. He knew it would require a lot of patience, but shepherds know all about patience.A. resolvedB. sensedC. appliedD. reminded参考答案：A【详解】考查动词辨析。

南溪区外国语学校2018-2019学年上学期高二数学12月月考试题含解析

南溪区外国语学校2018-2019学年上学期高二数学12月月考试题含解析班级__________ 姓名__________ 分数__________一、选择题1．下列命题中正确的是（）A ．若命题p 为真命题，命题q 为假命题，则命题“p ∧q ”为真命题B ．命题“若xy=0，则x=0”的否命题为：“若xy=0，则x ≠0”C ．“”是“”的充分不必要条件D ．命题“∀x ∈R ，2x ＞0”的否定是“”2．设n S 是等比数列{}n a 的前项和，425S S =，则此数列的公比q =（）A ．-2或-1B ．1或2 C.1±或2 D ．2±或-1 3．设函数f ′（x ）是奇函数f （x ）（x ∈R ）的导函数，f （﹣2）=0，当x ＞0时，xf ′（x ）﹣f （x ）＜0，则使得f （x ）＞0成立的x 的取值范围是（）A ．（﹣∞，﹣2）∪（0，2）B ．（﹣∞，﹣2）∪（2，+∞）C ．（﹣2，0）∪（2，+∞）D ．（﹣2，0）∪（0，2）4．若某算法框图如图所示，则输出的结果为（）A ．7B ．15C ．31D ．635．函数y=﹣lnx （1≤x ≤e 2）的值域是（）A ．[0，2]B ．[﹣2，0]C ．[﹣，0]D ．[0，]6．已知函数f （x ）是（﹣∞，0）∪（0，+∞）上的奇函数，且当x ＜0时，函数的部分图象如图所示，则不等式xf （x ）＜0的解集是（）A ．（﹣2，﹣1）∪（1，2）B ．（﹣2，﹣1）∪（0，1）∪（2，+∞）C ．（﹣∞，﹣2）∪（﹣1，0）∪（1，2）D ．（﹣∞，﹣2）∪（﹣1，0）∪（0，1）∪（2，+∞）7．某程序框图如图所示，该程序运行输出的k 值是（）A ．4B ．5C ．6D ．78．函数y=x+xlnx 的单调递增区间是（）A ．（0，e ﹣2）B ．（e ﹣2，+∞）C ．（﹣∞，e ﹣2）D ．（e ﹣2，+∞）9．设偶函数f （x ）在[0，+∞）单调递增，则使得f （x ）＞f （2x ﹣1）成立的x 的取值范围是（）A ．（，1）B ．（﹣∞，）∪（1，+∞）C ．（﹣，）D ．（﹣∞，﹣）∪（，+∞）10．在△ABC 中，内角A ，B ，C 的对边分别是a ，b ，c ，若a 2﹣b 2=bc ，sinC=2sinB ，则A=（）A ．30°B ．60°C ．120°D ．150° 11．已知集合{2,1,1,2,4}A =--，2{|log ||1,}B y y x x A ==-∈，则A B =（）A ．{2,1,1}--B ．{1,1,2}-C ．{1,1}-D ．{2,1}--【命题意图】本题考查集合的交集运算，意在考查计算能力． 12．（﹣6≤a ≤3）的最大值为（）A ．9B ．C ．3D ．二、填空题13．抛物线y 2=4x 上一点M 与该抛物线的焦点F 的距离|MF|=4，则点M 的横坐标x= ．14．“黑白配”游戏，是小朋友最普及的一种游戏，很多时候被当成决定优先权的一种方式．它需要参与游戏的人（三人或三人以上）同时出示手势，以手心（白）、手背（黑）来决定胜负，当其中一个人出示的手势与其它人都不一样时，则这个人胜出，其他情况，则不分胜负．现在甲乙丙三人一起玩“黑白配”游戏．设甲乙丙三人每次都随机出“手心（白）、手背（黑）”中的某一个手势，则一次游戏中甲胜出的概率是．15．幂函数1222)33)(+-+-=m mx m m x f （在区间()+∞,0上是增函数，则=m ．16．在4次独立重复试验中，随机事件A 恰好发生1次的概率不大于其恰好发生两次的概率，则事件A 在一次试验中发生的概率P 的取值范围是．17．长方体的一个顶点上的三条棱长分别是3，4，5，且它的8个顶点都在同一个球面上，则这个球的表面积是．18．已知函数，则__________；的最小值为__________．三、解答题19．已知双曲线过点P （﹣3，4），它的渐近线方程为y=±x ．（1）求双曲线的标准方程；（2）设F 1和F 2为该双曲线的左、右焦点，点P 在此双曲线上，且|PF 1||PF 2|=41，求∠F 1PF 2的余弦值．20．设M 是焦距为2的椭圆E ：+=1（a ＞b ＞0）上一点，A 、B 是椭圆E 的左、右顶点，直线MA 与MB 的斜率分别为k 1，k 2，且k 1k 2=﹣．（1）求椭圆E 的方程；（2）已知椭圆E ： +=1（a ＞b ＞0）上点N （x 0，y 0）处切线方程为+=1，若P是直线x=2上任意一点，从P 向椭圆E 作切线，切点分别为C 、D ，求证直线CD 恒过定点，并求出该定点坐标．21．已知点（1，）是函数f （x ）=a x （a ＞0且a ≠1）的图象上一点，等比数列{a n }的前n 项和为f （n ）﹣c ，数列{b n }（b n ＞0）的首项为c ，且前n 项和S n 满足S n ﹣S n ﹣1=+（n ≥2）．记数列{}前n项和为T n ，（1）求数列{a n }和{b n }的通项公式；（2）若对任意正整数n ，当m ∈[﹣1，1]时，不等式t 2﹣2mt+＞T n 恒成立，求实数t 的取值范围（3）是否存在正整数m ，n ，且1＜m ＜n ，使得T 1，T m ，T n 成等比数列？若存在，求出m ，n 的值，若不存在，说明理由．22．设等差数列{a n }的公差为d ，前n 项和为S n ，等比数列{b n }的公比为q ，已知b 1=a 1，b 2=2，q=d ，S 10=100．（1）求数列{a n }，{b n }的通项公式（2）当d ＞1时，记c n =，求数列{c n }的前n 项和T n ．23．（本小题满分12分）某校高二奥赛班N 名学生的物理测评成绩（满分120分）分布直方图如下，已知分数在100-110的学生数有21人.（1）求总人数N 和分数在110-115分的人数；（2）现准备从分数在110-115的名学生（女生占13）中任选3人，求其中恰好含有一名女生的概率；（3）为了分析某个学生的学习状态，对其下一阶段的学生提供指导性建议，对他前7次考试的数学成绩（满分150分），物理成绩y 进行分析，下面是该生7次考试的成绩.已知该生的物理成绩y 与数学成绩是线性相关的，若该生的数学成绩达到130分，请你估计他的物理成绩大约是多少？附：对于一组数据11(,)u v ，22(,)u v ……(,)n n u v ，其回归线v u αβ=+的斜率和截距的最小二乘估计分别为：^121()()()niii nii u u v v u u β==--=-∑∑，^^a v u β=-.24．已知函数f（x）=cosx（sinx+cosx）﹣．（1）若0＜α＜，且sinα=，求f（α）的值；（2）求函数f（x）的最小正周期及单调递增区间．南溪区外国语学校2018-2019学年上学期高二数学12月月考试题含解析（参考答案）一、选择题1．【答案】 D【解析】解：若命题p 为真命题，命题q 为假命题，则命题“p ∧q ”为假命题，故A 不正确；命题“若xy=0，则x=0”的否命题为：“若xy ≠0，则x ≠0”，故B 不正确；“”⇒“+2k π，或，k ∈Z ”，“”⇒“”，故“”是“”的必要不充分条件，故C 不正确；命题“∀x ∈R ，2x＞0”的否定是“”，故D 正确．故选D ．【点评】本题考查命题的真假判断，是基础题，解题时要认真审题，仔细解答．2．【答案】D 【解析】试题分析：当公比1-=q 时，0524==S S ，成立.当1-≠q 时，24,S S 都不等于，所以42224==-q S S S , 2±=∴q ,故选D.考点：等比数列的性质. 3．【答案】A【解析】解：设g （x ）=，则g （x ）的导数为：g ′（x ）=，∵当x ＞0时总有xf ′（x ）﹣f （x ）＜0成立，即当x ＞0时，g ′（x ）＜0，∴当x ＞0时，函数g （x ）为减函数，又∵g （﹣x ）====g （x ），∴函数g （x ）为定义域上的偶函数， ∴x ＜0时，函数g （x ）是增函数，又∵g （﹣2）==0=g （2），∴x ＞0时，由f （x ）＞0，得：g （x ）＜g （2），解得：0＜x ＜2，x＜0时，由f（x）＞0，得：g（x）＞g（﹣2），解得：x＜﹣2，∴f（x）＞0成立的x的取值范围是：（﹣∞，﹣2）∪（0，2）．故选：A．4．【答案】D【解析】解：模拟执行算法框图，可得A=1，B=1满足条件A≤5，B=3，A=2满足条件A≤5，B=7，A=3满足条件A≤5，B=15，A=4满足条件A≤5，B=31，A=5满足条件A≤5，B=63，A=6不满足条件A≤5，退出循环，输出B的值为63．故选：D．【点评】本题主要考查了程序框图和算法，正确得到每次循环A，B的值是解题的关键，属于基础题．5．【答案】B【解析】解：∵函数y=lnx在（0，+∞）上为增函数，故函数y=﹣lnx在（0，+∞）上为减函数，当1≤x≤e2时，若x=1，函数取最大值0，x=e2，函数取最小值﹣2，故函数y=﹣lnx（1≤x≤e2）的值域是[﹣2，0]，故选：B【点评】本题考查的知识点是对数函数的值域与最值，熟练掌握对数函数的图象和性质，是解答的关键．6．【答案】D【解析】解：根据奇函数的图象关于原点对称，作出函数的图象，如图则不等式xf（x）＜0的解为：或解得：x∈（﹣∞，﹣2）∪（﹣1，0）∪（0，1）∪（2，+∞）故选：D．7．【答案】C【解析】解：程序在运行过程中各变量的值如下表示：S k 是否继续循环循环前100 0/第一圈100﹣20 1 是第二圈100﹣20﹣21 2 是…第六圈100﹣20﹣21﹣22﹣23﹣24﹣25＜0 6 是则输出的结果为7．故选C．【点评】根据流程图（或伪代码）写程序的运行结果，是算法这一模块最重要的题型，其处理方法是：：①分析流程图（或伪代码），从流程图（或伪代码）中既要分析出计算的类型，又要分析出参与计算的数据（如果参与运算的数据比较多，也可使用表格对数据进行分析管理）⇒②建立数学模型，根据第一步分析的结果，选择恰当的数学模型③解模．8．【答案】B【解析】解：函数的定义域为（0，+∞）求导函数可得f′（x）=lnx+2，令f′（x）＞0，可得x＞e﹣2，∴函数f（x）的单调增区间是（e﹣2，+∞）故选B．9．【答案】A【解析】解：因为f（x）为偶函数，所以f（x）＞f（2x﹣1）可化为f（|x|）＞f（|2x﹣1|）又f（x）在区间[0，+∞）上单调递增，所以|x|＞|2x﹣1|，即（2x﹣1）2＜x2，解得＜x＜1，所以x 的取值范围是（，1），故选：A ．10．【答案】A【解析】解：∵sinC=2sinB ，∴c=2b ，∵a 2﹣b 2=bc ，∴cosA===∵A 是三角形的内角 ∴A=30° 故选A ．【点评】本题考查正弦、余弦定理的运用，解题的关键是边角互化，属于中档题．11．【答案】C【解析】当{2,1,1,2,4}x ∈--时，2log ||1{1,1,0}y x =-∈-，所以A B ={1,1}-，故选C ．12．【答案】B【解析】解：令f （a ）=（3﹣a ）（a+6）=﹣+，而且﹣6≤a ≤3，由此可得函数f（a ）的最大值为，故（﹣6≤a ≤3）的最大值为=，故选B ．【点评】本题主要考查二次函数的性质应用，体现了转化的数学思想，属于中档题．二、填空题13．【答案】 3 ．【解析】解：∵抛物线y 2=4x=2px ，∴p=2，由抛物线定义可知，抛物线上任一点到焦点的距离与到准线的距离是相等的，∴|MF|=4=x+=4， ∴x=3，故答案为：3．【点评】活用抛物线的定义是解决抛物线问题最基本的方法．抛物线上的点到焦点的距离，叫焦半径．到焦点的距离常转化为到准线的距离求解．14．【答案】．【解析】解：一次游戏中，甲、乙、丙出的方法种数都有2种，所以总共有23=8种方案，而甲胜出的情况有：“甲黑乙白丙白”，“甲白乙黑丙黑”，共2种，所以甲胜出的概率为故答案为．【点评】本题考查等可能事件的概率，关键是分清甲在游戏中胜出的情况数目．15．【答案】【解析】【方法点睛】本题主要考查幂函数的定义与性质,属于中档题.幂函数定义与性质应用的三个关注点：（1）若幂函数()y x R αα=∈是偶函数，则α必为偶数．当α是分数时，一般将其先化为根式，再判断；（2）若幂函数()y xR αα=∈在()0,+∞上单调递增，则α0>，若在()0,+∞上单调递减，则0α<；（3）在比较幂值的大小时，必须结合幂值的特点，选择适当的函数，借助其单调性进行比较. 116．【答案】 [] ．【解析】解：由题设知C 41p （1﹣p ）3≤C 42p 2（1﹣p ）2，解得p ，∵0≤p ≤1，∴，故答案为：[]．17．【答案】 50π ．【解析】解：长方体的一个顶点上的三条棱长分别是3，4，5，且它的8个顶点都在同一个球面上，所以长方体的对角线就是球的直径，长方体的对角线为：，所以球的半径为：；则这个球的表面积是：=50π．故答案为：50π．【点评】本题是基础题，考查球的内接多面体的有关知识，球的表面积的求法，注意球的直径与长方体的对角线的转化是本题的解答的关键，考查计算能力，空间想象能力．18．【答案】【解析】【知识点】分段函数，抽象函数与复合函数【试题解析】当时，当时，故的最小值为故答案为：三、解答题19．【答案】【解析】解：（1）设双曲线的方程为y2﹣x2=λ（λ≠0），代入点P（﹣3，4），可得λ=﹣16，∴所求求双曲线的标准方程为（2）设|PF1|=d1，|PF2|=d2，则d1d2=41，又由双曲线的几何性质知|d1﹣d2|=2a=6，∴d12+d22﹣2d1d2=36即有d12+d22=36+2d1d2=118，又|F1F2|=2c=10，∴|F1F2|2=100=d12+d22﹣2d1d2cos∠F1PF2∴cos∠F1PF2=【点评】本题给出双曲线的渐近线，在双曲线经过定点P的情况下求它的标准方程，并依此求∠F1PF2的余弦值．着重考查了双曲线的标准方程与简单几何性质、利用余弦定理解三角形等知识，属于中档题．20．【答案】【解析】（1）解：设A（﹣a，0），B（a，0），M（m，n），则+=1，即n2=b2•，由k1k2=﹣，即•=﹣，即有=﹣，即为a2=2b2，又c2=a2﹣b2=1，解得a2=2，b2=1．即有椭圆E的方程为+y2=1；（2）证明：设点P（2，t），切点C（x1，y1），D（x2，y2），则两切线方程PC，PD分别为：+y1y=1，+y2y=1，由于P点在切线PC，PD上，故P（2，t）满足+y1y=1，+y2y=1，得：x1+y1t=1，x2+y2t=1，故C（x1，y1），D（x2，y2）均满足方程x+ty=1，即x+ty=1为CD的直线方程．令y=0，则x=1，故CD过定点（1，0）．【点评】本题主要考查椭圆的简单性质、直线与椭圆的位置关系，导数的几何意义等基本知识，考查运算能力和综合解题能力．解题时要注意运算能力的培养．21．【答案】【解析】解：（1）因为f（1）=a=，所以f（x）=，所以，a2=[f（2）﹣c]﹣[f（1）﹣c]=，a3=[f（3）﹣c]﹣[f（2）﹣c]=因为数列{a n}是等比数列，所以，所以c=1．又公比q=，所以；由题意可得：=，又因为b n＞0，所以；所以数列{}是以1为首项，以1为公差的等差数列，并且有；当n≥2时，b n=S n﹣S n﹣1=2n﹣1；所以b n=2n﹣1．（2）因为数列前n项和为T n，所以==；因为当m∈[﹣1，1]时，不等式恒成立，所以只要当m∈[﹣1，1]时，不等式t2﹣2mt＞0恒成立即可，设g（m）=﹣2tm+t2，m∈[﹣1，1]，所以只要一次函数g（m）＞0在m∈[﹣1，1]上恒成立即可，所以，解得t＜﹣2或t＞2，所以实数t的取值范围为（﹣∞，﹣2）∪（2，+∞）．（3）T1，T m，T n成等比数列，得T m2=T1T n∴，∴结合1＜m＜n知，m=2，n=12【点评】本题综合考查数列、不等式与函数的有关知识，解决此类问题的关键是熟练掌握数列求通项公式与求和的方法，以及把不等式恒成立问题转化为函数求最值问题，然后利用函数的有关知识解决问题．22．【答案】【解析】解：（1）设a1=a，由题意可得，解得，或，当时，a n =2n ﹣1，b n =2n ﹣1；当时，a n =（2n+79），b n =9•；（2）当d ＞1时，由（1）知a n =2n ﹣1，b n =2n ﹣1，∴c n ==，∴T n =1+3•+5•+7•+9•+…+（2n ﹣1）•，∴T n =1•+3•+5•+7•+…+（2n ﹣3）•+（2n ﹣1）•，∴T n =2+++++…+﹣（2n ﹣1）•=3﹣，∴T n =6﹣．23．【答案】（1）60N =，6n =；（2）815P =；（3）115. 【解析】试题解析：（1）分数在100-110内的学生的频率为1(0.040.03)50.35P =+⨯=，所以该班总人数为21600.35N ==，分数在110-115内的学生的频率为21(0.010.040.050.040.030.01)50.1P =-+++++⨯=，分数在110-115内的人数600.16n =⨯=.（2）由题意分数在110-115内有6名学生，其中女生有2名，设男生为1234,,,A A A A ，女生为12,B B ，从6名学生中选出3人的基本事件为：12(,)A A ，13(,)A A ，14(,)A A ，11(,)A B ，12(,)A B ，23(,)AA ，24(,)A A ，21(,)AB ，22(,)A B ，34(,)A A ，31(,)A B ，32(,)A B ，41(,)A B ，42(,)A B ，12(,)B B 共15个.其中恰好含有一名女生的基本事件为11(,)A B ，12(,)A B ，22(,)A B ，21(,)A B ，31(,)A B ，32(,)A B ，41(,)A B ，42(,)A B ，共8个，所以所求的概率为815P =. （3）12171788121001007x --+-++=+=；69844161001007y --+-+++=+=；由于与y 之间具有线性相关关系，根据回归系数公式得到^4970.5994b ==，^1000.510050a =-⨯=，∴线性回归方程为0.550y x =+，∴当130x =时，115y =.1考点：1.古典概型；2.频率分布直方图；3.线性回归方程.【易错点睛】本题主要考查古典概型，频率分布直方图，线性回归方程,数据处理和计算能力.求线性回归方程,关键在于正确求出系数,a b ,一定要将题目中所给数据与公式中的,,a b c 相对应,再进一步求解.在求解过程中,由于,a b 的计算量大,计算时应仔细谨慎,分层进行,避免因计算而产生错误,特别是回归直线方程中一次项系数为,b 常数项为这与一次函数的习惯表示不同. 24．【答案】【解析】解：（1）∵0＜α＜，且sin α=，∴cos α=，∴f （α）=cos α（sin α+cos α）﹣，=×（+）﹣=．（2）f （x ）=cosx （sinx+cosx ）﹣．=sinxcosx+cos 2x ﹣=sin2x+cos2x=sin （2x+），∴T==π，由2k π﹣≤2x+≤2k π+，k ∈Z ，得k π﹣≤x ≤k π+，k ∈Z ，∴f（x）的单调递增区间为[kπ﹣，kπ+]，k∈Z．。