2019学年宁波六校高二上期中 (1)

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2019-2020学年浙江省宁波市奉化高中、三山高级中学等六校高二(下)期中化学试卷(含答案解析)

2019-2020学年浙江省宁波市奉化高中、三山高级中学等六校高二(下)期中化学试卷(含答案解析)
2019-2020学 年 浙 江 省 宁 波 市 奉 化 高 中 、 三 山 高 级 中 学 等 六校高二(下)期中化学试卷(含答案解析)
2019-2020学年浙江省宁波市奉化高中、三山高级中学等六校高二 (下)期中化学试卷 一、单选题(本大题共44小题,共88.0分) 1.下列有关化学用语表示正确的是 A. 淀粉和纤维素的分子均为:,则二者互为同分异构体 B. 离子结构示意图可以表示,又可以表示 C. 空间充填模型可以表示甲烷分子,也可以表示四氯化碳分子 D. 的电子式: 2.设阿伏加德罗常数的值为,下列说法中正确的是 A. 17g甲基所含中子数为 B. 常温常压下,乙烯和丙烯的混合气体中所含碳原子数为 C. 分子中含有的键数为 D. 标准状况下,辛烷在氧气中完全燃烧生成分子数为 3.下列有关说法正确的是 A. 、、、受热后均能生成气体 B. 具有漂白性可以使酸性高锰酸钾溶液褪色 C. 可用NaOH溶液处理硫酸工厂和硝酸工厂的尾气 D. 稀硝酸、稀硫酸均能将木炭氧化成二氧化碳 4.物质氧化性、还原性的强弱,不仅与物质的结构有关,还与物质的浓度和反应温度有关。下列 各组物质:与溶液与溶液与溶液与溶液与溶液,其中由于浓度不同而能发生不同氧化还原反应的是 A. B. C. D. 5.“绿色化学“是指从源头上消除或减少对环境的污染。下列实验或实验过程符合化学实验“绿 色化”原则的是 A. 用过氧化氢溶液代替高锰酸钾制取氧气 B. 用纳米铜粉代替铜丝进行铜和浓硝酸反应的实验 C. 用溴水代替碘水进行萃取实验 D. 为了让学生更清楚的看到实验现象要用较多量的氯气进行性质实验 6.五金铁中记载:“若造熟铁,则生铁流出时,相连数尺内,低下数寸,筑一方塘,短墙 抵之。其铁流入塘内,数人执柳木排立墙上众人柳棍疾搅,即时炒成熟铁。”以下说法不正确的是 A. 金属冶炼方法由金属活动性决定 B. 熟铁比生铁质地更硬,延展性稍差 C. 炒铁是为了降低铁水中的碳含量 D. 该法与近代往生铁水吹空气炼钢异曲同工

浙江省宁波市慈溪市六校联考高二英语上学期期中试题(含解析)

浙江省宁波市慈溪市六校联考高二英语上学期期中试题(含解析)

浙江省宁波市慈溪市六校联考2018-2019学年高二英语上学期期中试题(含解析)第一部分:听力(共两节)回答听力部分时,先将答案标在试卷上.听力部分结束前,你将有两分钟的时间将你的答案转涂到客观题答题卡上.第一节(共5小题;每小题1.5分,满分7。

5分)听下面5段对话.每段对话后有-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l0秒钟的时间来回答有关小题和阅读一下小题.每段对话仅读一遍.1.(1。

5分)What does the woman prefer to do?A. Find a quiet place.B. Check in the hotel.C. Avoid the traffic jam.2.(1。

5分)Who is probably the man?A. An exhibition visitor.B. A ticket collector.C. A policeman.3.(1。

5分)What subject does the boy show little interest in?A. Biology.B. Math.C. Physics.4.(1。

5分)What is the speakers’ opinion about the film?A. It makes them puzzled.B.It isn’t worth watching.C. It has a surprising ending.5.(1。

5分)Where does the conversation probably take place?A. At home.B. On a plane.C. At a newspaper stand(报摊).第二节(每小题1。

5分,满分22。

5分)听下面4段对话或独白.每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置.听每段对话或独白前,你将有时间阅读各个小题.每小题5秒钟;听完后,各小题将给出5秒钟的作答时间.每段对话或独白读两遍.6.(3分)(1)What will the speakers do next Saturday?A. Buy a new car.B. Travel to China.C. Look at some photos.(2)What's the relationship between the speakers?A. Neighbors.B. A couple.C. Fellow workers.7.(3分)系统找不到该试题8.(4.5分)(1)Who is getting married?A. Judy.B. Grace.C. Clara.(2)What will the man go for on Saturday?A. A birthday party.B. A wedding.C. A picnic.(3)What does the man suggest the woman do?A. Attend the wedding a little late.B. Call her best friend to say sorry.C. Go to the wedding and the party.9.(6分)(1)What program was put off to next week?A. Some news reports.B. A talk show.C. A football game.(2)Who was badly injured?A. The teacher.B. The bus driver.C. The truck driver.(3)How many students got hurt in the accident?A. 20.B. 18.C. 2.(4)What caused the accident?A. Drunk driving.B. Bad weather.C. Speeding.10.(6分)(1)What can we see in John's photo?A. A rainstorm.B. A monkey.C. A sleeping lion.(2)How much will John receive?A.﹩100.B.﹩500.C.﹩1,000.(3)What can we learn about Ben’s photo?A. It was taken in Africa.B. It happened by accident.C. It was in black and white.(4)What is the speaker’s advice in the end?A.Entering next month’s contest.B. Checking back for more information.C. Being careful while taking pictures.第二部分:阅读理解(共两节)第一节:(每小题2.5分,满分25。

2018-2019学年浙江省宁波市慈溪市六校联考高二上学期期中英语试题(解析版) 听力

2018-2019学年浙江省宁波市慈溪市六校联考高二上学期期中英语试题(解析版) 听力

2018-2019学年浙江省宁波市慈溪市六校联考高二(上)期中英语试卷一、阅读理解(本大题共10小题,共25.0分)AFarmers might think the idea of growing food for fun sounds strange.But there are some people who do it all the time.They grow some vegetables because their natural color or shape is pleasing to see.They grow others because scientists have developed new colors or different sizes for traditional vegetables.One example is the bell pepper.Seed companies sell seeds for several different kinds of bell peppers.One pepper is a weak yellow color when it begins to grow.Then its color changes to white.As it grows,it changes color two more times - to orange,then red.If you are not interested in peppers that change colors as they grow,you can grow some that remain on color.Each kind of pepper has its own special taste.Another unusual plant is known as the yard-long bean or snake bean.It grows up to one meter in length.It is an important part of the food supply in areas of Asia.American farmers like it because it is different,yet tastes very much like the green beans they traditionally grow.Each bean has from ten to twenty seeds.The outside or pod can be eaten.Some of the very long beans are green outside but have black-and-white or red seeds.Gourds (葫芦)are plants that people like to grow because of their many different shapes.They also have many uses.Some round gourds are dried,painted and made into containers.Others have long necks and big bodies.These are dried,cut and made into containers to pour drinking water.1.Which of the following statements is TRUE ______ .A. The new kinds of vegetables can sell better than the traditional ones.B. Asian are fond of snake bean because of its different colors.C. American farmers like bell pepper because of its different tastes.D. People are willing to grow gourds due to their various shapes and functions.2.People grow the bell pepper mainly to enjoy its ______ .A. shapesB. colorsC. flavorsD. vitamins3.Which is the best title for the passage?______A. Growing Unusual Vegetables for FunB. Growing Food with Different PurposesC. Growing different vegetables has different purposesD. Farmers' Strange Ideas of Growing Food【答案】【小题1】D 【小题2】B 【小题3】A【解析】1---3DBA1.D,考查事实细节题,根据最后一段第一句话Gourds (葫芦) are plants that people like to grow because of their many different shapes葫芦是人们喜欢种植的植物,因为它们有许多不同的形状.故选D.2.B,考查推理判断题,根据第二段As it grows, it changes color two more times - to orange, then red. If you are not interest ed in peppers that change colors as they grow, you can grow some that remain on color.随着它的生长,颜色再变两次--变为橙色,再变为红色.如果你不喜欢辣椒随着它们的生长而变色,你可以种植一些颜色保持不变的辣椒.故选B.3.A,主旨大意题,根据文章第一段Farmers might think the idea of growing food for fun sounds strange. But there are some pe ople who do it all the time.农民们可能会觉得种植食物来娱乐听起来很奇怪.但是有些人总是这么做.下文举例讲述人们的做法.故选A.本文以彩椒、葫芦和蛇豆为例讲述农民们可能会种植食物来娱乐的事情.阅读理解解题步骤:首先对原文材料迅速浏览,掌握全文的主旨大意.因为阅读理解题一般没有标题,所以,速读全文,抓住中心主旨很有必要,在速读的过程中,应尽可能多地捕获信息材料.其次,细读题材,各个击破.掌握全文的大意之后,细细阅读每篇材料后的问题,弄清每题要求后,带着问题,再回到原文中去寻找、捕获有关信息.要善于抓住每段的主题句,阅读时,要有较强的针对性.对于捕获到的信息,要做认真分析,仔细推敲,理解透彻,只有这样,针对题目要求,才能做到稳、准.BMother's Day is the occasion upon which children stop and say "thank you" to moms all over the world.Homemade cards express gratitude for countless meals cooked,wounds dressed and hugs given.Animal moms,on the other hand,never get any thanks.But animal moms are also great moms.You might be surprised at some of these moms.Octopuses (章鱼)The mother octopus lays about 50,000 eggs.For about 300 days,she stays with the eggs,cleans them and protects them.She does not leave to feed.However,this animal mom dies as soon as the eggs are hatched (孵化).Crocodiles (鳄鱼)A crocodile mother puts a lot of time and effort into raising her babies.She starts by building a nest,which she guards for over two months! When the eggs are ready to hatch,the young crocodiles call out to their mother,who digs them out and helps them hatch.She then carries them in her mouth down to the water,where she will guard them for several more weeks or months until they learn to hunt on their own.BatsBats become moms by hanging head up in a cave,giving birth.Catching the youngster before it can fall to the ground below,she puts it in a pouch (育儿袋).Bat moms may carry babies with them when feeding for the first few days.As the little bats get bigger and heavier,moms help them hang on the wall of their caves and return often to feed them.It continues for about three weeks,until the babies are grown up and able to fly on their own.Koalas (考拉)The animal mom gives birth after a pregnancy (怀孕期)of only 35 days.The hairless baby climbs into its mother's pouch and lives there for another five months.When the little koala is between five and eight months old,it leaves the pouch for short periods of time but returns for safety.Once it is too big to return to the pouch,it will climb onto its mother's back and ride there until it is about 12 months old.4. A crocodile mother usually carries her baby to the water ______ .A. in her pouchB. on her backC. in her mouthD. by her tail5. A bat mom ______ .A. gives birth by lying in the nestB. gives birth by hanging in a caveC. leaves its babies in the pouch for monthsD. lets its babies live on their own after birth6.According to the passage,what can we know about the koala?______A. A young koala usually stay with its mom for twelve months.B. The hairless baby lives in the mother's pouch for about half a year.C. The little koala leaves the pouch at age between four and seven months old.D. The animal mom needs to be pregnant for over two months before the baby's birth.【答案】【小题1】C 【小题2】B 【小题3】A【解析】1.C.细节理解题.由Crocodiles (鳄鱼)的She then carries them in her mouth down to the water.然后她用嘴叼着小鳄鱼到水里,选C.2.B.细节理解题.根据Bats的Bats become moms by hanging head up in a cave, giving birth.蝙蝠通过在洞穴中悬挂生产成为妈妈.可知选B.3.A.细节理解题.根据Koalas (考拉)中的 Once it is too big to return to the pouch, it will climb onto its mother's back and ride ther e until it is about 12 months old.一旦它太大而不能回到袋子里,它会爬到妈妈的背上骑着,直到大约12个月大.可知选A.本文介绍了一些伟大的动物妈妈.你可能会惊讶于这些动物妈妈们不可思议的辛苦.做本题时,首先应快速浏览全文,把握广告的写作特点并理清文章的结构;其次,可以通过对相关细节的理解,概括段落大意,以及通过逻辑推理或内容归纳,选出正确的答案.CI used to teach 7th grade boys.I often got comments of sympathy,but I loved those young students.When I first started teaching them,I soon realized I need to bring forth some new ideas to keep their attention,so I came up with the idea of doing object lessons.And one of my favourite lessons with them was the "Chocolate Cake Course".I took a covered cake carrier one day saying," I want you to have some chocolate cakes this morning." Then,I handed out a cup of cocoa powder,a bowl of eggs,and container with flour,oil,sugar and all the other ingredients to each boy.They looked at me in puzzlement and disappointment.I smiled as I told them,"I know it doesn't look like a chocolate cake now,but without adding all those ingredients,you won't end up with a delicious chocolate cake."We discussed the way the ingredients were put in a bowl and then beaten by a mixer.We talked about how the batter(糊状物)was put into pans and placed in a hot oven.Then I shared with them how the process mirrors our lives.Sometimes there were sweet times,like the sugar that went into the cake.Sometimes there were bitter times,like the cocoa when eaten alone.And sometimes there were hard times when we felt as if we were being beaten like the batter.Finally,we talked about how it was necessary for the cake batter to go into a hot oven.Sometimes we felt the heat of hot oven as if we were going through some hard circumstances.Just like I need to have a plan for that chocolate cake,we need to know exactly what ingredients to put into our lives and how long we need to stay in the oven of hard times so that we could become stronger and get the sweetness from life.Looking at their facesthroughout the room,I could tell the boys had got it,especially when I showed a chocolate cake for them to share.7.What is the writer's new idea as a teacher ?______A. Teaching children history.B. Doing object lessons.C. Going fishing with children.D. Sharing chocolate cakes in class.8.How did the writer know the students understood her lessons?______A. From the students' answers.B. From the students' expressions.C. According to what the students did.D. According to the students' comments.9.Which of the following can describe the teacher properly?______A. Kind,helpful and good-tempered.B. Active,diligent and sympathetic.C. Positive,good-looking and thoughtful.D. Caring,creative and respectable.10.The writer not only taught the students how to make cakes but also ______ .A. told them the truth of lifeB. taught them good disciplineC. stressed the importance of workD. spread culture knowledge【答案】【小题1】B 【小题2】B 【小题3】D 【小题4】A【解析】1.B.细节理解题.根据第一段When I first started teaching them, I soon realized I need to bring forth some new ideas to k eep their attention, so I came up with the idea of doing object lessons可知,当我第一次开始教他们时,我很快意识到我需要提出一些新的想法来保持他们的注意力,所以我想出了做对象课程的想法.故选B.2.B.推理判断题.根据第二段 They looked at me in puzzlement and disappointment以及最后一段 Looking at their faces throughout the room, I could tell the boys had got it可以看出,作者是通过学生的表情知道他们是否明白的.故选B.3.D.推理判断题.阅读全文,根据文章内容可知,作者作为一名老师是一个关心学生,创新的,并受学生爱戴的.故选D.4.A.细节理解题.根据最后一段内容 Just like I need to have a plan for that chocolate cake, we need to know exactly what ing redients to put into our lives and how long we need to stay in the oven of hard times so that w e could become stronger and get the sweetness from life.像我需要制定巧克力蛋糕的计划一样,我们需要确切地知道我们生活中应该使用哪些成分以及我们需要多长时间才能在烤箱中度过难关,以便我们能够变得更强壮并从生活中获得甜蜜.可以看出,作者不仅教会学生如何制作蛋糕,还告诉他们生活的道理.故选A本文是一篇人生感悟类阅读,属于记叙文,主要讲述了我通过巧克力蛋糕课程,不仅教会学生如何制作蛋糕,还告诉他们生活的道理.考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断二、阅读七选五(本大题共5小题,共10.0分)Homework is made up of out-of-class activities and at-home activities teachers assign to students.It can include practice assignments that emphasize newly acquired skills.(1) Projects that have to be worked on in agreement with schoolwork also form a part of homework.(2) .For example,to complete their homework in time,children start dividing their time into studying and playing,thus learning to complete their scheduled tasks within the time they have.They learn to do things on their own.They manage their time and complete their work independently.Homework can also help build up children's confidence.(3) .Teachers' positive remarks can help develop students' confidence and encourage them to keep up with their good work.In addition,homework gives students a chance to learn from their mistakes and overcome their weakness.It provides them with a platform to express what they know or have newly found,and exhibit their talents.(4) .This helps them improve their academic results.However,to be as beneficial to students as possible,homework should be assigned properly.The amount and difficulty level of homework assignments should match the ages and abilities of students.(5) .Homework proves to be beneficial only if it does not put students under stress or pressure.A.Otherwise,it will become a punishment.B.Homework can benefit students in many ways.C.Teachers give comments on the work that students do.D.It also gives students the practice of whatever they learn in school.E.Completing homework requires planning,organizing and acting upon it.F.Students can gain a sense of accomplishment after completing homework.G.It can be preparation assignments to make students ready for class activities.11. A. A B. B C. C D. D E.E F.F G. G12. A. A B. B C. C D. D E.E F.F G. G13. A. A B. B C. C D. D E.E F.F G. G14. A. A B. B C. C D. D E.E F.F G. G15. A. A B. B C. C D. D E.E F.F G. G【答案】【小题1】G 【小题2】B 【小题3】C 【小题4】D 【小题5】A 【解析】1-5 GBCDA1.G.文章衔接题.根据前文Homework is made up of out-of-class activities and at-home activities teachers assign to students.It can include practice assignments that emphasize newly acquired skills.可知家庭作业由课外活动和教师分配给学生的家庭活动组成.家庭作业可以包括强调新获得的技能的实践作业.G项:t can be preparation assignments to make students ready for class activities.它可以是准备作业,使学生为课堂活动做好准备.符合文意,故选G.2.B.联系下文题.根据后文For example,to complete their homework in time,children start dividing their time into studying and playing,thus learning to complete their scheduledtasks within the time they have.可知例如,为了按时完成作业,孩子们开始把时间分成学习和玩耍,从而学会在有限的时间内完成预定的任务.B项:Homework can benefit students in many ways.家庭作业可以在许多方面使学生受益.符合文意,故选B.3.C.理解判断题.根据后文Teachers' positive remarks can help develop students' confidence and encourage them to keep up with their good work.可知老师的积极评价有助于培养学生的自信心,并鼓励他们跟上好工作的步伐.C项:Teachers give comments on the work that students do.老师对学生的工作给予评价.符合文意,故选C.4.D.语境辨析题.根据前文It provides them with a platform to express what they know or have newly found,and exhibit their talents.可知家庭作业给他们提供了一个平台,表达他们知道或新发现的东西,展示他们的才华.D项:It also gives students the practice of whatever they learn in school.它也让学生练习他们在学校学到的任何东西.符合文意,故选D.5.A.理解判断题.根据后文Homework proves to be beneficial only if it does not put students under stress or pressure.可知只有当家庭作业没有给学生带来压力的时候,它才证明是有益的.A项:Otherwise,it will become a punishment.否则,就会成为惩罚.符合文意,故选A.本文是一篇选句填空,文章主要介绍了家庭作业由课外活动和教师分配给学生的家庭活动组成.家庭作业可以包括强调新获得的技能的实践作业.它可以是准备作业,使学生为课堂活动做好准备.然而,为了对学生尽可能有利,应该适当地布置作业.作业的数量和难度应该与学生的年龄和能力相匹配.否则,作业就会成为惩罚.答题前先快速浏览一遍七个备选答案,先确定哪个选项适合放在文章的什么位置.通常有三个四个位置:标题,句首,句中,句尾.不同位置的句子有不同的特征.确定文章体裁,抓住文章结构.分析篇章结构,找出各段的主题句或主旨大意.三、完形填空(本大题共20小题,共30.0分)A man was driving along the highway when he saw the Easter rabbit walking across the middle of the road.He wanted to avoid (16)the rabbit,but unluckily the Easter rabbit jumped in front of the (17)and was knocked over.The basket of candy,which the rabbit was(18),went flying all over the place.The driver,being an animal (19)stopped his car at the side of the (20),and got out to see what had become of the rabbit.Much to his (21),the colorful rabbit was dead,so the driver began to(22).A woman (23)down the highway saw the man crying on the side of the road,(24)she stopped her car,stepped out and asked the man what was (25)."I feel terrible," he explained,"I hit the Easter rabbit and killed it (26).Children will be so sad - they always (27)to see it on Easter.What should I do?"The woman told the man not to (28).She went to her car and pulled out a spray can.She walked over to the (29)rabbit and sprayed something onto it.Immediately,the Easter rabbit came to (30)jumped up,picked up the (31)all over the ground,waved at the two (32)and walked down the road.The man was (33).He didn't know what was in the woman's spray can.He ran over to the woman and asked,"What did you spray on the Easter rabbit?"The woman (34)the can around so that the man could (35)the words on it.It said,"Hair spray - restores life to dead hair."16. A. beating B. seeing C. hitting D. striking17. A. shop B. field C. tree D. car18. A. giving B. carrying C. showing D. making19. A. lover B. owner C. protector D. researcher20. A. house B. station C. road D. ground21. A. excitement B. joy C. anger D. sadness22. A. laugh B. weep C. shout D. sing23. A. driving B. walking C. running D. flying24. A. though B. but C. so D. if25. A. different B. important C. possible D. wrong26. A. by hand B. by accident C. by design D. by contrast27. A. expect B. forget C. hate D. learn28. A. go B. worry C. rest D. explain29. A. mad B. polite C. dead D. colorful30. A. success B. life C. dream D. work31. A. candy B. basket C. carrots D. eggs32. A. men B. humans C. women D. children33. A. encouraged B. pleased C. surprised D. amused34. A. broke B. picked C. threw D. turned35. A. read B. keep C. receive D. write【答案】【小题1】C 【小题2】D 【小题3】B 【小题4】A 【小题5】C 【小题6】D 【小题7】B 【小题8】A 【小题9】C 【小题10】D 【小题11】B 【小题12】A 【小题13】B 【小题14】C 【小题15】B 【小题16】A 【小题17】B 【小题18】C 【小题19】D 【小题20】A 【解析】1-5 CDBAC 6-10 DBACD 11-15 BABCB 16-20 ABCDA1.C.考查动词及语境理解.根据下文but unluckily the Easter rabbit jumped in front of the 可知,他想避免撞到兔子,故答案为C.2.D.考查名词及语境理解.根据前文A man was driving along the highway when he saw the Easter rabbit walking across the midd le of the road可知,提示在开车行进,故答案为D.3.B.考查动词及语境理解.根据The basket of candy, which the rabbit was(3), went flying all over the place可知,兔子携带的糖果散落的到处都是,故答案为B.4.A.考查名词及语境理解.根据下文the man crying on the side of the road可知,该男子是动物爱好人士,故答案为A.5.C.考查名词及语境理解.根据前文when he saw the Easter rabbit walking across the middle of the road可知,是把车停靠在路边,故答案为C.6.D.考查名词及语境理解.根据下文the man crying on the side of the road可知,该男子感到非常难过,故答案为D.7.B.考查动词及语境理解.根据下文saw the man crying on the side of the road可知,这个司机在哭泣,故答案为B.8.A.考查动词及语境理解.根据A woman (8)down the highway saw the man crying on the side of the road可知,一位在公路上开车经过的女士看到该男子在哭泣,故答案为A.9.C.考查连词及语境理解.根据下文she stopped her car, stepped out and asked the man 可知,因此该女士停车走了下来,故答案为C.10.D.考查形容词及语境理解.根据前文 asked the man what was (10)可知,问那个男人出了什么事,故答案为D.11.B.考查固定搭配及语境理解.A.by hand手工;B.by accident 意外地;C.by design故意地;D.by contrast 通过对比;根据前文I hit the Easter rabbit and killed it (11)可知,男子说自己意外把兔子给撞死了,故答案为B.12.A.考查动词及语境理解.根据Children will be so sad - they always (12)to see it on Easter可知,孩子们肯定很难过,他们期望在复活节看到它呢,故答案为A.13.B.考查动词及语境理解.根据下文She went to her car and pulled out a spray can可知,女人告诉男人不要担心,故答案为B.14.C.考查形容词及语境理解.根据前文the colorful rabbit was dead可知,那只五彩的兔子已经死了,故答案为C.15.B.考查名词及语境理解.根据 Immediately, the Easter rabbit came to (15)jumped up 可知,马上,复活节兔复活了,故答案为B.16.A.考查名词及语境理解.根据前文The basket of candy可知,捡起的是地上的糖果,故答案为A.17.B.考查名词及语境理解.根据waved at the two (17)and walked down the road可知,兔子向这两个人挥挥手,然后走开了,故答案为B.18.C.考查形容词及语境理解.根据下文He didn't know what was in the woman's spray can可知,该男子感到非常惊讶,故答案为C.19.D.考查动词及语境理解.根据The woman (19)the can around 可知,女人把罐子翻转过来,故答案为D.20.A.考查动词及语境理解.根据so that the man could (20)the words on it. It said, "Hair spray - restores life to dead hair."可知,这样男人就可以看清标签了,故答案为A.本文是一篇记叙文,讲述的是一位男子开车不小心把复活节兔撞死了,感到非常难过,就在这时一位女士用一瓶发胶神奇地让兔子起死回生的故事.近几年高考试题中的完形填空有新的变化,试题所涉及的知识面不断拓宽,综合难度不断提高.做完型填空首先要通读全文,了解大意.一篇完形填空的文章有许多空格,所以,必须先通读一至两遍,才能大概了解文章的内容.千万不要看一句,做一句.其次要逐句分析,前后一致.选择答案时,要考虑整个句子的内容,包括搭配、时态、语法等.答案全填完后,再通读一遍文章,检查是否通顺流畅了,用词得当,意思正确.四、语法填空(本大题共1小题,共15.0分)36.Jane Goodall was born on April 3,1934 in London (1) grew up in Bournemouth on thesouthern coast of England.On her second birthday,Jane Goodall's father bought her a beautiful,lifelike toy chimp (2) (name)Jubilee,in honor of a baby chimp born at the London Zoo.Jane Goodall loved the toy,and today,Jubilee still sits on a chair in her home in England.As a child,Jane Goodall was (3) regular reader of the popular Tarzan books.But at the age of ten or eleven,she dreamed of going to Africa to live with (4) (animal).She had encouragement from her mother,(5) told her to work hard,take advantage of theopportunities,and never give up.When a friend invited her to Kenya in 1957,Jane (6) (ready)accepted the offer.And that year,Jane traveled to Kenya (7) boat,and it was there (8) she heard of Dr Louis Leakey and managed to impress him with her knowledge of Africa and its wildlife.Dr Leakey hired her as his assistant at Gombe National Park,(9) (watch)the wild chimps and recording everything she saw.Over the years,Goodall's studies (10) (continue)to show the many striking similarities between humans and chimps.【答案】【小题1】and 【小题2】named 【小题3】a 【小题4】animals 【小题5】who 【小题6】readily 【小题7】by 【小题8】that【解析】1.and.考查连词,根据谓语动词was以及grew up,可知两个动词并列,故填and.2.named.考查非谓语,叫做Jubilee的大猩猩,过去分词在这里作后置定语,修饰chimp.3.a.考查冠词,Jane是定期的读者,这里是泛指,故填a.4.animals.考查名词,和动物们住在一起,不止一个动物,故填复数形式.5.who.考查连词,该句是定语从句,先行词是mother,在定语从句中做主语,故填who.6.readily.考查副词,根据后面的动词accepted,可知使用副词修饰动词,愉快地接受.7.by.考查介词,by boat:乘船.by+交通工具,表示乘坐某种交通工具.8.that.考查连词,该句是it was…that的强调句,强调there.9.watching.考查非谓语,逗号前面是主句,后面是现在分词做状语,her和watch之间是主动关系,故填现在分词.10.have continued.考查时态,根据over the years,可知使用完成时态,主语是复数形式,结合上下文故填现在完成时.本文写了简•古道尔在丛林中观察黑猩猩的行为,并取得了巨大的成就获得了学位.语法填空是通过语篇在语境中考查语法知识的运用能力,在解题前应快速浏览短文掌握大意,在读懂短文的基础上,结合短文提供的特定的语言环境去逐句分析.要解决好语法填空,离不开坚实的语法知识,有了坚实的语法知识才能对语言进行正确的分析和判断,从而答对题目.五、书面表达(本大题共2小题,共40.0分)37.一份调查显示:当今中学生最关心的问题之一就是人际关系的处理.良好的人际关系能够使他们的生活更愉快、精力更充沛、身体更健康.但是,对于中学生来说,要想处理好人际关系不是一件容易的事情,仅有主观热情是不够的,还要讲求方法.请你结合下面的要点写一则题为"How to Improve Interpersonal Relationship"的英文演讲稿.(1)尊重他人;(2)去掉自私心理;(3)主动交往,去掉自卑心理;(4)尊重他人权利,虚心接受他人的忠告和建议;(5)乐于助人.注意:1.对所给要点,不要简单翻译,可适当发挥.2.词数:80左右.3.演讲稿中不能提及自己所在学校和本人姓名.4.参考词汇:自卑inferiorityGood morning, everyone!The topic of my speech today is…Thank you for listening!【答案】Good morning, everyone!The topic of my speech today is "How to Improve Interpersonal Relationship". To improve interpersonal relationship, a student should respect others and be generous.(高分句型一)(尊重他人) In a way a selfish person can't make true friends.(去掉自私心理)It is better to be active in improving interpersonal relationship and get rid of the sense of infer iority.(主动交往,去掉自卑心理)It's wise to respect the rights of others and follow their advice, which makes you gain more respect and is beneficial to growing up.(高分句型二)(尊重他人权利,虚心接受他人的忠告和建议) Last but not least, one should be ready to help any person in trouble.(乐于助人) By doing so, one can improve interpersonal relationship with others.(总结)Thank you for listening!【解析】To improve interpersonal relationship, a student should respect others and be generous.(高分句型一)句中To improve interpersonal relationship为不定式作主语要改善人际关系,学生应该尊重他人,慷慨大方.It's wise to respect the rights of others and follow their advice, which makes you gain more respect and is beneficial to growing up.(高分句型二)句中which makes you gain more respect and is beneficial to growing up为非限制性定语从句尊重他人的权利,听从他们的建议是明智的,这会使你得到更多的尊重,有利于成长.英语写作是一项主观性较强的测试题.它不仅考查学生的写作基础而且还考查学生在写作过程中综合运用语言的能力.在撰写时要注意主谓语一致,时态呼应,用词贴切等.要提高英语写作水平,需要两方面的训练:一是语言基础方面的训练,要有扎实的造句、翻译等基本功,即用词法、句法等知识造出正确无误的句子;二是写作知识和能力方面的训练以掌握写作方面的基本方法和技巧.38.阅读下面短文,根据所给情节进行续写,使之构成一个完整的故事.A few years ago I worked in an international company that sold computer devices.I hadto travel a lot over the country as a part of my work.I remember that I was at a stage of my life where I only cared about how to make more money.On one of my trips,I came to the airport to take a bus to downtown,as usual.It was the same routine:get into the city,take the bus to the hotel,visit the customer,work late,take the bus back to the airport and fly back… That day,for some reasons,I decided to take the stairs down to a different exit,where I came across a beautiful gardenI had never seen before.I waited there,enjoying the scenery.Finally the bus came.Usually I always took the seat behind the driver.That day I sat down somewhere in the middle.A boy was seated next to me,carrying a lot of suitcases.Suddenly,he turned to me and gave me one of the most sincere smiles I had ever seen from astranger.Warmly,he said,"hi,the perfect day in the perfect place,huh?"I remember thinking to myself - this must be one of those typical people who is young andnaive and just thinks everything is beautiful and easy.Why was he annoying me when I just wanted to enjoy the bus ride?But out of politeness,I replied,"Perfect! Did your parents pay for you to have some vacations on the beach?" "No,I'm not here forvacation,and I don't have parents," He shook his head,"I'm here because I want to achieve my biggest dream.I'm on the way to the army school where my grandfather studied a long time ago."Paragraph 1:"I lost my dad 10 years ago then my mom married again.My stepfather… ______Paragraph 2:He smiled and told me that for 10 years,he had only one thing on his mind to… ______ 【答案】【小题1】"I lost my dad 10 years ago then 【小题2】He smiled and told me thatmy mom married again.My stepfather threw me out of the house.Since then,I've been living all over the country.I've met many people who were kind to me【高分句型一】.And I've learnt a lot from life through these years," he said softly.At that point I couldn't say a word.I felt the tears coming.Fortunately,he continued talking.for 10 years,he had only one thing on his mind to join the army school like his grandfather."My grandpa was a general of the army.He left me this," he said proudly.He showed me a golden knife and said this was the best memory of his childhood."The only thing I know is that I will follow my dream and every day I will be happy 【高分句型二】." Soon,the bus reached his stop,he stood up,took all his suitcases,and said goodbye with a big smile.From that day on,I always try to do everything with my best smile on my face.【解析】"I lost my dad 10 years ago then my mom married again.【要点一,续写故事开始】 My stepfather threw me out of the house. Since then, I've been living all over the c ountry. I've met many people who were kind to me【高分句型一】. And I've learnt a lot from life through these years," he said softly. At that point I couldn't say a word. I felt the tears coming. Fortunately, he continued talking.He smiled and told me that for 10 years, he had only one thing on his mind to join the arm y school like his grandfather.【要点二,续写故事中】 "My grandpa was a general of the army. He left me this," he said proudly. He showed me a golden knife and said this was the best memory of his ch ildhood. "The only thing I know is that I will follow my dream and every day I will be happy 【高分句型二】." Soon,the bus reached his stop, he stood up, took all his suitcases, and said goodbye with a big smile. From that day on, I always try to do everything with my best s mile on my face.【要点三,故事结束】【高分句型一】I've met many people who were kind to me.我遇到过很多对我很好的人.关系代词who引导的定语从句.【高分句型二】The only thing I know is that I will follow my dream and every day I will be happy.我所知道的唯一一件事就是我将追随我的梦想,每天我都将快乐.定语从句和表语从句用法.开放性作文给出一定的写作主题,并此为基础进行思维和联想,自由发挥.不仅考查学生在内容、结构安排、语言运用和组织方面的能力,而且对学生的想像力、发散思维、归纳判断能力也有很高的要求.。

宁波市2019-2020学年高二语文上学期期中试题[答案]

宁波市2019-2020学年高二语文上学期期中试题[答案]

宁波市2019-2020学年高二语文上学期期中试题[答案]一、语言文字基础与运用(共23分,其中选择题每题2分)1.下列词语中,加点字的注音全都正确的一项是A.莆.田(pú)老趼.(jiǎn)绯.闻(fěi)强.颜欢笑(qiǎng)B.釉.料(yòu)逶迤.(yí)金钏.(chuàn)呼天抢.地(qiǎng)C.榆枋.(fāng)缧绁.(xiè)惩创.(chuāng)如丧考妣.(bǐ)D.玉醅.(pēi)愠.怒(wèn)攒.射(cuán)长歌当.哭(dàng)2.下列各句中,没有错别字的一项是A.我国幅员广阔,不同地区有不同的特产。

适应风土,因地治宜,努力发展传统的生产,是切合实际的做法。

B.曼妙的文身在美女的背部,加强了她的妖娆和蛊惑;病变的皮肤布满令人生厌的疱疹,颓败的肉体紧紧踩住灵魂的脚后跟。

C.歧江公园使我们看到了那些被熟视无睹的人们,推开了被时光默默淹没了的“单位”之门,迎面吹来清新贻和的风,听到劳动的人们在歌唱。

D.这是我知道的,凡我所编辑的期刊,大概是因为往往有始无终之故罢,销行一向就甚为廖落,然而在这样的生活艰难中,毅然预定了《莽原》全年的就有她。

阅读下面的文字,完成3-4题。

一见残破的废墟就觉得碍眼,不惜工本修葺一新....,这在某种意义上是缺乏文化素养的表现。

重修伟大的长城废墟这一“石头的史诗”,修了一段又一段,然后把这些新长城当作旅游点,吸引游人来看这假古董,这是对国民文物意识的严重误导!殊不知这种以假乱真的做法,对那些稍有文物意识的游客来说是倒胃口...的。

[甲]笔者曾多次陪同来自各地的朋友游览长城,人家往往事先就提出要求——“可不要领我们去看新的长城”。

一次我陪两对外国夫妇游览司马台长城,起初我也不知道它是“修旧如旧”过的,以为是被岁月特赦..了的。

[乙]直到走完最后一个完好的岗楼时,眼前突然出现乱石满地的残破的长城遗迹。

浙江省宁波2019-2020学年高二上学期期中考试语文试题含答案

浙江省宁波2019-2020学年高二上学期期中考试语文试题含答案

宁波2019-2020学年高二第一学期期中考试语文试题卷含答案答卷时间:[120] 满分:[150]一、选择题(本大题共20小题,每小题3分,共60分)1.下列词语中加点的字注音全都正确的一项是()A.鹰隼.(sǔn)疱.疹(pào)谂.知(rěn)栏楯.(shǔn)B.筵.席(yán)笑靥.(yàn)老趼.(jiǎn)喋血.(xuè)C.船坞.(wù)乳媪.(ǎo)釉.料(yòu)醴酪.(luò)D.稍.息(shào) 躯壳.(qiào)惩.罚(chéng)框.架(kuàng)2.下列词语中没有错别字的一项是()A.震撼提炼青睐皇天后土B.渲泄辨析抑或陨身不恤C.沧桑防范诊断异曲同功D.盘垣去逝枕藉推陈出新3.下列各句中,没有错别字且加点字的注音全都正确的一项是()A.我必须承认,倘不是你乘.(chèng)我不备的时候偷听去了我的真情的表白,我一定会更加矜.(jīn)持一点的;所以原谅我吧,是黑夜泄漏了我心底的秘密,不要把我的允诺看作无耻的轻狂。

B.你要是嫌我太容易降心相从,我也会堆起怒容,装出倔.(juè)强的神气,拒绝你的好意,好让你向我宛转求情。

C.无毒昆虫狐假虎威地模.(mó)仿起有毒昆虫的黄黑斑纹,这是自然界中最危险的警戒符号——弱者的抵抗外强中干.(gān),必须模仿恶才得以自卫。

D.而鹿群的远方,虎已步出月光下的营地,树影婆娑,冈.(gǎng)峦低沉,它站住,凝眸星宿.(xiù)──那晚风中开放的天上花园。

虎一般单独生活,而它所捕食的动物几乎都是群居,让人不禁置疑“团结就是力量”的概括。

4.依次填入下列横线处的词语,最恰当的一组是()①苏轼有“罗浮山下四时春,卢橘杨梅次第新。

日啖荔枝三百颗,不辞长作岭南人”一诗,久为人所______。

2019学年鄞州中学高二上学期期中试卷

2019学年鄞州中学高二上学期期中试卷

2019学年鄞州中学高二上学期期中试卷一、选择题:本大题共10小题,每小题4分,共40分 1.若椭圆222116x y b+=过点(-,则其焦距为A.B.C.D. 2.命题“若0>m ,则20+-=x x m 有实数根”与其逆命题、否命题、逆否命题这四个命题中,假命题的个数是A. 0B. 1C. 2D. 4 3.已知,m n 是两条不同的直线,,αβ是两个不同的平面A.若,αβ m m ,则αβB. 若,αβ⊥ m m ,则αβC. 若,αα⊥ m n ,则 m n D . 若,αα⊥⊥m n ,则 m n 4.下列命题说法正确的是A.命题“若21=x ,则1=x ”的否命题为:“若21=x ,则1≠x ” B. “03<<x ”是“11-<x ”的必要不充分条件C.命题“∃∈x R ,使得210+-<x x ”的否定是:“∀∈x R ,均有210+->x x ” D. D.命题“若=x y ,则sin sin =x y ”的逆命题为真命题 5.设()30+-=x y 方程表示的曲线是A.一个圆和一条直线B. 一个圆和一条射线C. 一个圆D. 一条直线6.如图,在一个二面角的棱上有两个点A ,B ,线段AC ,BD 分别在这个二面角的两个面内,并且都垂直于棱AB ,4AB cm =,6AC cm =,8BD cm =,CD =,则这个二面角的度数为A.30 B.60 C.90 D.1207.如图下列四个正方体图形中A ,B 为正方体的两个顶点,M ,N ,P 分别为其所在的棱的中点,能得出//AB 平面MNP 的图形的序号是A.①③ B.①④ C.②③ D.②④8.如图,四边形ABCD 是边长为1的正方形,MD ⊥平面ABCD ,NB ⊥平面ABCD ,且1MD NB ==,G为线段MC 的中点,则下列结论中不正确的是A.MC AN ⊥ B.//GB 平面AMN C.平面CMN ⊥平面AMN D.平面DCM //平面ABN9.如图,在长方形ABCD中,AB =,1BC =,E 为线上DC 上一动点,现将ADE ∆沿AE 折起,使点D 在面ABC 内的射影K 在直线AE 上,当点E 从D 运动到C ,则点K 所形成的的轨迹的长度为A.3πB.2π10.如图,在ABC ∆中,当90C ∠= ,PA ⊥平面ABC ,AE PB ⊥于E ,AF PC ⊥于F ,2AP AB ==,EAF α∠=,当α变化时,则三棱锥P AEF -的体积最大值是AC二、填空题:本大题共7小题,前4题每空3分,后3题每空4分,共36分 11.已知原命题为“若0<x <1,则x 2<1”,写出它的逆否命题形式: .(填写“真命题”或“假命题”)12.正方体ABCD -A 1B 1C 1D 1中,E 、F 分别是AA 1、AB 的中点,则EF 与直线AC 1所成角的大小为 ;EF 与对角面BDD 1B 1所成角的正弦值是 .13.已知某组合体的三视图如图所示,其侧视图是一个等腰直角三角形,则该组合体的表面积为 ,体积为14.已知圆锥SO 的底面半径是23,母线长是2,则将它侧面沿一条母线SA 展开而成的扇形的中心角等于 ,若M 是SA 的中点,从M 处拉一条绳子饶圆锥侧面转到点A ,则绳子长度的最小值等于 .15.已知方程x 23-m +y 2m -1=1表示焦点在y 轴上的椭圆,则实数m 的取值范围为 .16.如图,在三棱柱111ABC A B C -中,,,D E F 分别是1,,AB AC AA 的中点,设三棱锥V ADE -的体积为1V ,三棱柱111ABC A B C -的体积为2V ,则12_______V V =:.侧视图俯视图正视图17.已知正四棱柱1111ABCD A B C D -的底面边长6AB =,侧棱长1AA =,它的外接球的球心为O ,点E 是AB 的中点,点P 是球O 上的任意一点,有以下命题: ①PE 的长的最大值为9;②三棱锥P EBC -的体积的最大值是323; ③存在过点E 的平面,截球O 的截面面积为9 ; ④三棱锥1P AEC -的体积的最大值为20;⑤过点E 的平面截球O 所得的截面面积最大时,1B C 垂直于该截面. 其中是真命题的序号是___________11三、解答题:本大题共5小题,共74分18.如图,直三棱柱111ABC A B C -,90o ABC ∠=,12AA AC ==,1BC =,点,E F 分别为11A C 、BC 的中点.⑴ 证明:1C F ∥平面ABE ; ⑵ 求三角形E ABC -的体积.19.已知0c >,设p :函数x y c =在R 上递减;q :不等式21x x c +->的解集为R ,如果“p 或q ”为真,且“p 且q ”为假,求c 的取值范围.20.已知多面体P ABCD -中,1,90,2AB CD BAD PAB AB PA DA PD DC M ∠=∠=︒====,为PB 中点. (1) 求证:PA CM ⊥;(2) 求直线BC 与平面CDM 所成角的正弦值.21. 在平面直角坐标系xOy 中,点B 与点(1,1)A -关于原点对称,P 是动点,且直线AP 与BP 的斜率之积等于13-.(1) 求动点P 的轨迹方程,并注明x 的范围;(2) 设直线AP 与BP 分别与直线3x =交于M N 、,问是否存在点P 使得PAB ∆与PMN ∆面积相等?若存在,求出点P 的坐标,若不存在,说明理由.22.如图,在矩形ABCD 中,3, 6.,AB AD E F ==分别在,AD BC 上,且1,4AE BF ==,沿EF 将四边形AEFB 折成四边形''A EFB ,使点'B 在平面CDEF 上的射影H 在直线DE 上(1)求证:平面'B CD ⊥平面'B HD ; (2)求证:'A D 平面'B FC ; (3)求二面角'A DE F --的正弦值。

浙江省宁波市2019年高二上学期期中数学试卷(I)卷

浙江省宁波市2019年高二上学期期中数学试卷(I)卷

浙江省宁波市2019年高二上学期期中数学试卷(I)卷姓名:________ 班级:________ 成绩:________一、选择题 (共12题;共24分)1. (2分) (2018高三上·龙泉驿月考) 已知集合,,则A∩B=()A .B .C . (0,1]D . (0,3]2. (2分)已知f(x)=x+ 在(1,e)上为增函数,则实数b的取值范围是()A . (﹣∞,1]∪[e2 ,+∞)B . (﹣∞,0]∪[e2 ,+∞)C . (﹣∞,1]D . [1,e2]3. (2分) (2019高一下·哈尔滨月考) 记为等差数列的前项和,若,,则()A . 4B . 5C . 6D . 74. (2分) A为三角形ABC的一个内角,若,则这个三角形的形状为()A . 锐角三角形B . 钝角三角形C . 等腰直角三角形D . 等腰三角形5. (2分)给出下列命题,其中错误命题的个数为()(1)直线a与平面α不平行,则a与平面α内的所有直线都不平行;(2)直线a与平面α不垂直,则a与平面α内的所有直线都不垂直;(3)异面直线a、b不垂直,则过a的任何平面与b都不垂直;(4)若直线a和b共面,直线b和c共面,则a和c共面.A . 1B . 2C . 3D . 46. (2分)已知平行四边形ABCD中,AC为一条对角线,若=(2,4),=(1,3),则()A . -8B . -6C . 6D . 87. (2分)函数f(x)=loga(2﹣ax)在[0,4]上为增函数,则b=4的取值范围是()A .B . (0,1)C .D . [4,+∞)8. (2分) (2016高二下·揭阳期中) 执行如图所示的程序框图,若输出S的值是,则a的值可以为()A . 2014B . 2015C . 2016D . 20179. (2分)在一次马拉松决赛中,30名运动员的成绩(单位:分钟)的茎叶图如图所示13 0 0 3 4 5 6 6 8 8 814 1 1 1 2 2 2 3 3 4 4 5 5 515 0 1 2 2 3 3 3若将运动员按成绩由好到差编为1﹣30号,在用系统抽样方法从中抽取6人,则其中成绩在区间[130,151]上的运动员人数是()A . 3B . 4C . 5D . 610. (2分) (2018高二下·黑龙江月考) 已知满足约束条件,则目标函数的最大值为()A . 2B . 6C . 5D .11. (2分)若某几何体的三视图(单位:cm)如图所示,则此几何体的表面积是(cm2)()A . 2π+6B . 2π+6C . 6+(2+2)πD . 6+(+2)π12. (2分)若不等式对一切成立,则的最小值为()A . 0B . -2C .D . -3二、填空题 (共4题;共4分)13. (1分)长方形ABCD中,AB=2,BC=1,O为AB的中点,在长方形ABCD内随机取一点,取到的点到O的距离大于1的概率为________14. (1分) (2019高二上·德惠期中) 给出下列命题:①命题“若,则”的否命题为“若,则”;②“ ”是“ ”的必要不充分条件;③ 命题“,使得”的否定是:“ ,均有”;④命题“若,则”的逆否命题为真命题其中所有正确命题的序号是________.15. (1分)当x>0时,函数y=的最小值为________16. (1分)(2016·山东理) 已知函数f(x)= ,其中m>0,若存在实数b,使得关于x的方程f(x)=b有三个不同的根,则m的取值范围是________.三、解答题 (共6题;共60分)17. (15分)(2018·淮北模拟) 大豆,古称菽,原产中国,在中国已有五千年栽培历史,皖北多平原地带,黄河故道土地肥沃,适宜种植大豆,2018年春,为响应中国大豆参与世界贸易的竞争,某市农科院积极研究,加大优良品种的培育工作,其中一项基础工作就是研究昼夜温差大小与大豆发芽率之间的关系,为此科研人员分别记录了5天中每天100粒大豆的发芽数,得如下数据表格:科研人员确定研究方案是:从5组数据中选3组数据求线性回归方程,再用求得的回归方程对剩下的2组数据进行检验.(1)求剩下的2组数据恰是不相邻的2天数据的概率;(2)若选取的是4月5日、6日、7日三天数据,据此求关于的线性同归方程;(3)若由线性回归方程得到的估计数据与实际数据的误差绝对值均不超过1粒,则认为得到的线性回归方程是可靠的,请检验(Ⅱ)中同归方程是否可靠?注:, .18. (5分) (2016高一下·桐乡期中) 设函数的最大值为M,最小正周期为T.(Ⅰ)求M、T;(Ⅱ)若有10个互不相等的正数xi满足f(xi)=M,且xi<10π(i=1,2,…,10),求x1+x2+…+x10的值.19. (10分) (2017高二下·洛阳期末) 如图,已知矩形BB1C1C所在平面与底面ABB1N垂直,在直角梯形ABB1N 中,AN∥BB1 ,AB⊥AN,CB=BA=AN= BB1 .(1)求证:BN⊥平面C1B1N;(2)求二面角C﹣C1N﹣B的大小.20. (10分)老张身高176cm,他爷爷、父亲、儿子的身高分别是173cm、170cm和182cm,因儿子的身高与父亲的身高有关,父亲的身高用x表示,儿子的身高用y来表示.(1)完成答题卡中的表格;(2)用回归分析的方法得到的回归方程为 =bx+ ,则预计老张的孙子的身高为多少?21. (10分) (2017高一上·福州期末) 已知圆C的半径为1,圆心C(a,2a﹣4),(其中a>0),点O(0,0),A(0,3)(1)若圆C关于直线x﹣y﹣3=0对称,过点A作圆C的切线,求切线的方程;(2)若圆C上存在点P,使|PA|=|2PO|,求圆心C的横坐标a的取值范围.22. (10分)(2017·山东) 已知{an}是各项均为正数的等比数列,且a1+a2=6,a1a2=a3 .(1)求数列{an}通项公式;(2){bn} 为各项非零的等差数列,其前n项和为Sn,已知S2n+1=bnbn+1,求数列的前n项和Tn.参考答案一、选择题 (共12题;共24分)1-1、2-1、3-1、4-1、5-1、6-1、7-1、8-1、9-1、10-1、11-1、12-1、二、填空题 (共4题;共4分)13-1、14-1、15-1、16-1、三、解答题 (共6题;共60分) 17-1、17-2、17-3、18-1、19-1、19-2、20-1、20-2、21-1、21-2、22-1、22-2、。

浙江省慈溪市三山高级中学等六校2019-2020学年高二上学期期中联考英语试题

浙江省慈溪市三山高级中学等六校2019-2020学年高二上学期期中联考英语试题

2019学年第一学期高二期中六校联考高二英语学科试卷命题学校:正始中学选择题部分第一部分:听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。

每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. Why does the man need a map?A. To tour Manchester.B. To find a restaurant.C. To learn about China.2. What does the woman want to do for vacation?A. Go to the beach.B. Travel to Colorado.C. Learn to snowboard.3. What will the man probably do?A. Take the job.B. Refuse the offer.C. Change the working hours.4. What does the woman say about John?A. He won’t wait for her.B. He won't come home today.C. He won’t be on time for dinner.5. What will the speakers probably do next?A. Order some boxes.B. Go home and rest.C. Continue working.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。

每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。

听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。

浙江慈溪三山高级中学等六校高二上学期期中联考语文试题含答案

浙江慈溪三山高级中学等六校高二上学期期中联考语文试题含答案

2019 学年度第一学期高二期中六校联考高二语文学科试卷命题学校:余姚八中命题者:高二语文备课组考试时间:150分钟试题满分:150分一、语言文字应用(共24分,选择题每题3分)1.下列词语中,加点字的注音全都正确的一项是(▲)A.逶迤(wēi) 龟裂(jūn)鹰隼(shǔn)游目骋怀(chěng)B.揾泪(yùn) 疱疹(pào) 莞尔(wǎn) 长歌当哭( dàng)C.妊娠(shēn) 攒射(cuán) 镌刻(juān) 槲寄生(hú)D.菲薄(fēi) 墙垣(yuán) 乳媪 (ǎo) 呱呱而泣 (gū)2.下列句子中没有错别字的一项是(▲)A.斑纹无处不在,将两极秘密地衔接,像族徵,凝聚着世袭的生和死,荣与辱。

B.中国军人的屠戳妇婴的伟绩,八国联军的惩创学生的武工,不幸全被这几缕血痕抹杀了。

C.自然学者们常常把变异的惟一可能原因归之于如气侯、食物等等外界条件,从某一狭隘的意义上来说,这是正确的。

D.俊秀的蒙太古啊,我真地太痴心了,所以也许你会觉得我的举动有点轻浮;可是相信我,朋友,总有一天你会知道我的忠心远胜过那些善于矜持作态的人。

3.下列加点词语使用正确的一项是(▲)A.出于自身的立意的考虑,一些地区画地为牢,实行地方保护主义,人为地分割和控制煤....炭资源。

B.自打进入9 月份开始,车商就开始在车价上大做文章,按照业内人士的说法,眼下的车价已经进入多变之秋,其变动之快、之繁甚至大有一日三秋之意。

....C .陈老师教学之余,勤练书法。

现在,陈老师的字潇洒飘逸,腾蛟起凤,每个人看到了后....都赞不绝口。

D .青年人应响应党中央号召,立定为中华民族伟大复兴而读书的远大志向,不为任何蜗角..虚名,蝇头微利所困。

.. ....4.下列各句中没有语病,表意明确的一项是( ▲ )A .“绿水青山就是金山银山”这一重要论断,打破了简单地把发展与保护对立起来的思维束缚,生动地概括了眼前利益与长久利益的内在联系。

2018-2019学年浙江省慈溪市六校高二上学期期中考试物理试题

2018-2019学年浙江省慈溪市六校高二上学期期中考试物理试题

2018学年第一学期高二期中六校联考物理试卷命题学校 正始中学考生须知:1.全卷分试卷和答题卷。

试卷共6页,有3大题,20小题。

满分100分,考试时间90分钟。

所有试题均在答题卷上作答,否则无效。

2.可能用到的相关参数:无特殊说明时,重力加速度g 均取10m/s 2。

选择题部分一、单项选择题(本大题共12小题,每小题3分,共36分。

在每小题给出的四个选项中,选出符合题意的一个选项,选对的得3分,有选错或不答的得0分)1.在研究微观粒子时,常常用到电子伏特做单位,电子伏特是( ) A.电量单位 B.电功率单位 C.能量单位 D.电压单位 2.下列描述中,符合事实的是( )A.卡文迪许借助扭秤装置总结出了点电荷间相互作用的规律B.洛伦兹发现了磁场对运动电荷的作用规律C.法拉第发现了电流的磁效应D.欧姆发现了电流通过导体时产生热效应的规律3.使两个完全相同的金属小球(均可视为点电荷)分别带上 -Q 3和+Q 5 的电荷后,将它们固定在相距为 a 的两点,它们之间库仑力的大小为 1F 。

现用绝缘工具使两小球相互接触后,再将它们固定在相距为 a 2 的两点,它们之间库仑力的大小为 2F 。

则 1F 与 2F 之比为( )A .2∶1B .4∶1C .16∶1D .60∶14.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,则下列说法中正确的是( ) A .该粒子带负电B .M 点的电势小于N 点的电势C .粒子在M 点的电势能小于在N 点的电势能D .粒子在M 点的动能小于在N 点的动能5.下列各图中,已标出电流I 及其产生的磁场的磁感应强度B的方向,其中符合安培定则的是( )第4题图ABCDB第5题图6.如图甲所示为法拉第在研究电磁感应时用过的线圈,其工作原理如图乙所示,则实验中不会使电流表指针发生偏转的是( )A .保持开关闭合B .开关闭合瞬间C .开关断开瞬间D .移动变阻器滑片7.如图所示为洛伦兹力演示仪的结构图。

2019-2020学年浙江省宁波市慈溪市六校联考高二(上)期中化学试卷 (含答案解析)

2019-2020学年浙江省宁波市慈溪市六校联考高二(上)期中化学试卷 (含答案解析)

2019-2020学年浙江省宁波市慈溪市六校联考高二(上)期中化学试卷一、单选题(本大题共25小题,共50.0分)1.下列属于可再生能源的是()A. 氢能B. 石油C. 煤D. 天然气2.下列物质放入含一定量水的烧杯中,会明显感到烧杯降温的是()A. 酒精B. 生石灰C. 硝酸铵D. 浓硫酸3.研究化学反应进行的方向具有重要意义.下列解释与事实不符合的是()4.用惰性电极电解下列溶液一段时间后再加入一定量的某种物质(括号内物质),能够使溶液恢复到原来的成分和浓度的是()A. CuCl2(CuO)B. NaOH(NaOH)C. NaCl(NaCl)D. CuSO4(CuO)5.在气体反应中,能使反应物中活化分子数和活化分子百分数同时增大的方法是()①增大反应物的浓度②升高温度③增大压强④加入催化剂.A. ①②③B. ②④C. ②③④D. ①③6.下列叙述不正确的是()A. 化石燃料是一次能源B. 太阳能、氢能、生物质能属于新能源C. 乙醇是不可再生能源D. 燃料电池可以将化学能转化为电能7.已知反应:①101kPa时,2C(s)+O2(g)=2CO(g)△H=−221kJ⋅mol−1②稀溶液中,H+(aq)+OH−(aq)=H2O(l)△H=−57.3kJ⋅mol−1由此可以推断下列结论正确的是()A. 1 mol碳完全燃烧放出的热量大于110.5 kJB. ①的焓变为221 kJ⋅mol−1C. 浓硫酸与稀NaOH溶液完全反应生成1 mol水时放热为57.3 kJD. 稀醋酸与稀NaOH溶液反应生成1 mol水,放出57.3 kJ热量8.四个不同容器在不同条件下进行合成氨反应,根据下列在相同时间内测定的结果判断,生成氨的速率最快的是()A. 用H2表示的反应速率为0.1mol⋅L−1⋅min−1B. 用N2表示的反应速率为0.04mol⋅L−1⋅s−1C. 用N2表示的反应速率为0.2mol⋅L−1⋅s−1D. 用NH3表示的反应速率为0.3mol⋅L−1⋅s−9.一定温度下,对于反应N2+O2⇌2NO在密闭容器中进行,下列措施能增大反应速率的是()A. 降低温度B. 恒容充入氮气C. 恒压充入氦气D. 恒容充入氦气10.把180mL 2mol/L的H2SO4跟过量锌粉反应,在一定温度下,为了加快反应速率而不影响生成H2的总量,下列措施可行的是()A. 改用20mL 18mol/L的H2SO4实验B. 反应物中加入少量的硝酸钠固体C. 反应物中加入少量的硫酸铜固体D. 反应物中加入少量的碳酸钠固体11.下列有关金属铁的腐蚀与防护,说法正确的是()A. 酸雨后易发生析氢腐蚀、炒锅存留盐液时易发生吸氧腐蚀B. 当镀锡铁和镀锌铁镀层破损时,后者更易被腐蚀C. 铁与电源正极连接可实现电化学保护D. 将钢管与铜管一起堆放时可保护钢管少受腐蚀12.关于如图所示装置的说法错误的是()A. 该装置能将化学能转化成电能B. 铜片周围溶液变为蓝色C. 电子由锌片通过外电路流向铜片D. 溶液中SO42−向负极方向流动13.结合图判断,如下叙述正确的是()A. Ⅰ和Ⅱ中负极均能产生气泡B. Ⅰ和Ⅱ中正极均能产生气泡C. Ⅰ和Ⅱ中负极反应均是Fe−2e=Fe2+D. Ⅰ和Ⅱ中正极反应均是2H++2e=H214.对于可逆反应:2A(g)+2B(g)⇌C(g)+2D(g);△H<0,下列各图正确的是()A. B.C. D.15.一定条件下,在某容积固定的密闭容器中进行反应:2SO2(g)+O2(g)2SO3(g)。

浙江省慈溪市六校2018-2019学年高二上学期期中考试数学试题(解析版)

浙江省慈溪市六校2018-2019学年高二上学期期中考试数学试题(解析版)

浙江省慈溪市六校2018-2019学年高二上学期期中考试数学试题一、选择题(本大题共10小题,每小题4分,共40分)1.直线的倾斜角为()A. B. C. D.【答案】D【解析】【分析】利用直线的倾斜角与斜率的关系即可得出.【详解】设直线x+y﹣1=0的倾斜角为α.直线x+y﹣1=0化为.∴tanα=﹣.∵α∈[0°,180°),∴α=150°.故选:D.【点睛】本题考查了直线的倾斜角与斜率的关系,属于基础题.2.若直线过第一、三、四象限,则实数满足()A. B. C. D.【答案】C【解析】【分析】根据题意画出图形,结合图形知a>0且b>0.【详解】直线过第一、三、四象限,如图所示;则a>0,-b<0.即a>0且b>0.故选:C.【点睛】本题考查了直线方程的应用问题,是基础题.3.点P(5a+1,12a)在圆(x–1)2+y2=1的内部,则a的取值范围是( )A. |a|<1B. a<C. |a|<D. |a|<【答案】D【解析】由圆(x﹣1)2+y2=1,得到圆心坐标为(1,0),半径r=1,点P在圆(x﹣1)2+y2=1内部⇔(5a+1﹣1)2+(12a)2<1⇔.故选D4.设是两条不同的直线,是两个不同的平面,则下列说法正确的是()A. 若,则B. 若,则C. 若,则D. 若,则【答案】D【解析】【分析】依据空间中的线与线,线与面的有关结论,不难得到正确结论.【详解】A、由于α∥β,m⊂α,则m∥β,又n⊂β,可得m∥n或m,n异面,故A错;B、由于,可得m∥n或m,n异面或m,n相交,故B错;C、由于,故则或相交,故C错;D、由于,结合面面垂直性质定理可知,故D正确.故选:D.【点睛】本题考查的知识点是判断命题真假,比较综合的考查了空间中直线与平面的位置关系,我们需对四个结论逐一进行判断,可以得到正确的结论.5.已知直线过点,且在轴和轴上的截距互为相反数,则直线的方程为()A.B.C.D.【答案】C【解析】试题分析:当直线过原点及时,直线为;当直线不过原点时,设直线为,代入,得,所以方程为,故选C.考点:直线的方程.【易错点睛】对于直线的截距方程中应注意:(1)其中为直线在轴上的截距,为直线在轴上的截距;(2)截距是坐标而不是距离,可正可负可为零.因此在解题过程设截距方程时,要分直线过原点和不过原点讨论,否则易造成漏解.6.已知不等式组表示的平面区域为,若函数的图象上存在区域内的点,则实数的取值范围是()A. B. C. D.【答案】A【解析】【分析】结合二元一次不等式(组)与平面区域的关系画出其表示的平面区域,再利用函数y=|x﹣1|的图象特征,结合区域的角上的点即可解决问题.【详解】作出不等式组对应的平面区域如图:作出函数y=|x﹣1|的图象如图:则函数的图象关于x=1对称,沿着对称轴x=1平移y=|x﹣1|图象,由图象可知当图象经过点B时函数m取得最小值,当图象经过点D时,m取得最大值,由,解得,即B(2,﹣1).此时﹣1=|2﹣1|+m,即m=﹣2,由,解得,即D(1,1),此时1=m,即m=1,则实数m的取值范围﹣2≤m≤1,故选:A.【点睛】本题主要考查线性规划的应用,利用数形结合是解决线性规划题目的常用方法.利用平移确定目标函数取得最优解的条件是解决本题的关键.7.如右图在一个二面角的棱上有两个点,,线段分别在这个二面角的两个面内,并且都垂直于棱,,则这个二面角的度数为( )A. 30°B. 60°C. 90°D. 120°【答案】B【解析】过点作且,连接,则,即为二面角的平面角,由题意,得,由余弦定理,得,则,即这个二面角的度数为;故选B.8.如图,在长方形中,,,点为线段上一动点,现将沿折起,使点在面内的射影在直线上,当点从运动到,则点所形成轨迹的长度为()A. B. C. D.【答案】C【解析】【分析】根据图形的翻折过程中变与不变的量和位置关系知,若连接D'K,则D'KA=90°,得到K点的轨迹是以AD'为直径的圆上一弧,根据长方形的边长得到圆的半径,求得此弧所对的圆心角的弧度数,利用弧长公式求出轨迹长度.【详解】由题意,将△AED沿AE折起,使平面AED⊥平面ABC,在平面AED内过点D作DK⊥AE,K为垂足,由翻折的特征知,连接D'K,则D'KA=90°,故K点的轨迹是以AD'为直径的圆上一弧,根据长方形知圆半径是,如图当E与C重合时,AK==,取O为AD′的中点,得到△OAK是正三角形.故∠K0A=,∴∠K0D'=,其所对的弧长为=,故选:【点睛】本题考查与二面角有关的立体几何综合题目,解题的关键是由题意得出点K的轨迹是圆上的一段弧,翻折问题中要注意位置关系与长度等数量的变与不变,属于中档题目.9.已知圆的方程为,圆与直线相交于两点,且(为坐标原点),则实数的值为()A. B. C. D.【答案】A【解析】【分析】将直线方程代入圆的方程,利用韦达定理,以AB为直径的圆过原点即OA⊥OB,x1x2+y1y2=0,可得关于a的方程,即可求解.【详解】由直线x+2y﹣4=0与圆x2+y2﹣2x﹣4y+a=0,消去y,得5x2﹣8x﹣16+4a=0①设直线l和圆C的交点为A (x1,y1),B(x2,y2),则x1、x2是①的两个根.∴x1x2=,x1+x2=.②由题意有:OA⊥OB,即x1x2+y1y2=0,∴x1x2+(4﹣x1)(4﹣x2)=0,即x1x2﹣(x1+x2)+4=0③将②代入③得:a=.故选:A.【点睛】本题综合考查直线与圆的位置关系,考查韦达定理的运用,属于基本知识的考查与应用.10.如图,在棱长为的正方体中,分别为棱的中点,是线段的中点,若点分别为线段上的动点,则的最小值为()A. B. C. D.【答案】D【解析】【分析】连接B1D1交EF于G,连接PG,则EF⊥平面B1D1DB,故EF⊥PG,从而PM的最小值PG,可知G为EF的中点,D1G 为D1B1的四分之一.其次,连接BD,设其中点为H,连接PH,BC1,则△D1DB≌△D1C1B,从而PN=PH.(实现了转化,这步是解题之关键),最后,连接GH交BD1于K,则当P为K时,PM+PN取得最小值,所求最小值为GH,即可【详解】首先PM的最小值就是P到EF的距离.连接B1D1交EF于G,连接PG,则EF⊥平面B1D1DB,故EF⊥PG,从而PM的最小值PG,可知G为EF的中点,D1G 为D1B1的四分之一.其次,连接BD,设其中点为H,连接PH,BC1,则△D1DB≌△D1C1B1,从而PN=PH.(实现了转化,这步是解题之关键)最后,连接GH交BD1于K,则当P为K时,PM+PN取得最小值,所求最小值为GH.∵正方体ABCD﹣A1B1C1D1的棱长为1,∴GH==.故选:D.【点睛】本题考查多面体和旋转体表面上的最短距离问题,考查学生分析解决问题的能力,属于中档题.二、填空题(本大题共7小题,多空题每空3分,单空题每空4分,共36分)11.已知直线与直线平行,则实数______,两条直线之间的距离是______.【答案】(1). (2).【解析】【分析】由直线平行易得m值,可得方程,代入平行线间的距离公式可得.【详解】由直线x+2y﹣1=0与直线2x+my+4=0平行,可得,∴m=4,直线2x+4y+4=0可化为x+2y+2=0,∴d==.故答案为:4,.【点睛】本题考查了两直线平行的条件及平行直线间的距离,属于基础题.12.在空间直角坐标系中,已知点与点,则_____,若在z轴上有一点M满足|MA|=|MB|,则点M坐标为_____.【答案】(1). (2).【分析】利用空间两点间的距离公式直接求得的值,设M(0,0,a),则|MA|=|MB|,由此利用两点间距离公式能求出M 的坐标.【详解】∵点点,∴在空间直角坐标系中,z轴上有一个点M到点A(1,0,2)与点B(1,﹣3,1)的距离相等,设M(0,0,a),则|MA|=|MB|,即=,解得a=﹣3,∴M(0,0,﹣3).故答案为:,(0,0,﹣3).【点睛】本题考查点的坐标的求法,考查两点间距离公式等基础知识,考查运算求解能力,考查函数与方程思想,是基础题.13.过点的直线与圆交于,两点,当最小时,直线的方程为_________________,此时___________.【答案】(1). (2).【解析】【分析】利用当∠ACB最小时,CP和AB垂直,求出AB直线的斜率,用点斜式求得直线l的方程.【详解】圆C:的圆心为C(1,0),当∠ACB最小时,CP和AB垂直,∴AB直线的斜率等于﹣=﹣,用点斜式写出直线l的方程为y﹣=﹣(x﹣),即,,∴,∴,即故答案为:,.【点睛】本题考查用点斜式求直线方程的方法,两直线垂直,斜率之积等于﹣1.判断当∠ACB最小时,CP和AB垂直是解题的关键.14.已知实数满足,目标函数的最大值是,则实数________,的最小值是________.【答案】(1). (2).【解析】【分析】画出约束条件的可行域,利用目标函数的几何意义,求出最优解,然后求解目标函数的最小值即可.【详解】x,y满足可行域如图阴影部分所示,将直线2x﹣y﹣m=0分别与直线与直线x=1联立,解得A(1,2﹣m),B(,),C(1,),由图可知,当直线过点A时,取得最大值,根据已知条件最大值为-1,所以-,解得m=4,所以B(,),所以当直线经过B点时,取得最小值,所以z=-3×﹣=.故答案为:,【点睛】本题主要考查线性规划的应用,利用z的几何意义,通过数形结合求解是解决本题的关键.15.已知实数满足,则的最小值为__________.【答案】15【解析】设,则原式,故最小值为.16.已知点为圆外一点,若圆上存在一点,使得,则正数..的取值范围是____________.【答案】【解析】【分析】求出圆心和半径,结合条件得到1>≥sin30°,解不等式即可.【详解】由圆C:(x﹣a)2+(y﹣a)2=2a2,得圆心为C(a,a),半径r=a,(a>0),∴PC=,设过P的一条切线与圆的切点是T,则TC=a,∴当Q为切点时,∠CPQ最大,∵圆C上存在点Q使得∠CPQ=30°,∴满足≥sin30°,即≥,整理可得3a2+2a﹣2≥0,解得a≥或a≤,又≤1,即≤1,解得a≤1,又点 P(0,2)为圆C:(x﹣a)2+(y﹣a)2=2a2外一点,∴a2+(2﹣a)2>2a2,解得a<1,∵a>0,∴综上可得≤a<1.故答案为:.【点睛】本题考查直线和圆的位置关系的应用,根据条件转化为切线关系是解决本题的关键,是中档题.17.在平面直角坐标系中,设为不同的两点,直线的方程为,设,其中均为实数.下列四个说法中:①存在实数,使点在直线上;②若,则过两点的直线与直线重合;③若,则直线经过线段的中点;④若,则点在直线的同侧,且直线与线段的延长线相交.所有结论正确的说法的序号是______________.【答案】③④【解析】【分析】①点在直线上,则点的坐标满足直线方程,从而得到ax2+bx2+c=0,进而可判断①不正确;②若δ=1,则ax1+by1+c=ax2+by2+c,进而得到,根据两直线斜率的关系即可判定过M、N两点的直线与直线l平行或重合;③若δ=﹣1,则ax1+by1+c+ax2+by2+c=0,从而得到即,所以直线l经过线段MN的中点;④若δ>1,则ax1+by1+c>ax2+by2+c>0,或ax1+by2+c<ax2+by2+c<0,根据点与直线的位置关系可知点M,N在直线l同侧,从而可判定④正确.【详解】若点N在直线l上则ax2+bx2+c=0,∴不存在实数δ,使点N在直线l上,故①不正确;若δ=1,则ax1+by1+c=ax2+by2+c,即,∴k MN=k l,即过M、N两点的直线与直线l平行或重合,故②错误;若δ=﹣1,则ax1+by1+c+ax2+by2+c=0即,,∴直线l经过线段MN的中点,即③正确;若δ>1,则ax1+by1+c>ax2+by2+c>0,或ax1+by2+c<ax2+by2+c<0,即点M、N在直线l的同侧,且直线l与线段MN不平行.故④正确.故答案为:③④.【点睛】本题考查两直线的位置关系,点与直线的位置关系,直线的一般式方程等知识的综合应用,属于难题.三、解答题(本大题共5小题,第18题14分,第19至22题每题15分,共74分)18.已知的顶点、、,边上的中线所在直线为.(Ⅰ)求的方程;(Ⅱ)求点关于直线的对称点的坐标.【答案】(1)(2)【解析】本题考查中点坐标、直线方程与轴对称问题。

2019学年宁波市高二上语文六校联考期中答案

2019学年宁波市高二上语文六校联考期中答案
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25. 尾联用典。船工捕得鲤鱼本是很平常的事,
作者却巧妙地借用“呼儿烹鲤鱼,中有尺素书” 的典故,说鲤鱼来自南方家乡,这抒发了他盼望 家书的急切心情,同时也表达了作者对家人、家 乡难以排遣的思念之情。
2019年度第一学期期中高二语文 学科试题答案
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宁波六校合作组织2019高二上年中试题-物理

宁波六校合作组织2019高二上年中试题-物理

宁波六校合作组织2019高二上年中试题-物理本卷共100分,考试时间90分钟【一】单项选择题〔每题3分,共30分,每题只有一个正确答案〕 1.关于静电场场强的概念,以下说法正确的选项是()A.由E =F/q 可知,某电场的场强E 与q 成反比,与F 成正比B.正、负检验电荷在电场中同一点受到的电场力方向相反,所以某一点场强方向与放入检验电荷的正负有关C.电场中某一点的场强与放入该点的检验电荷正负无关D.电场中某点不放检验电荷时,该点场强等于零2.在“用电流表和电压表测定电池的电动势和内电阻”的实验中,的电流和电压,得到了如图2所示的U —I 图线,从图象中可以看出〔〕A 、电池a 的电动势较大,内电阻较大B 、电池a 的电动势较小,内电阻较小C 、电池b 的电动势较小,内电阻较大D 、电池b 的电动势较大,内电阻较小3、如下图,让平行板电容器带电后,极板B 与一灵敏的静电计相接,极板A 接地。

静电计的指针偏转一定的角度,假设不改变A 、B 两板的带电量,而将A 板向B 板稍微靠近,那么〔〕 A 、两极板间的电压变大B 、静电计的指针偏角变大 C 、静电计的指针偏角变小D 、平板电容器的电容变小4、如下图的电路中,电源的电动势E 和内电阻r 恒定不变,电灯L 恰能正常发光,如果变阻器的滑片向a 端滑动,那么〔〕 A 、电灯L 更亮,安培表的示数减小 B 、电灯L 更亮,安培表的示数增大 C 、电灯L 变暗,安培表的示数减小 D 、电灯L 变暗,安培表的示数增大5、一带负电荷的质点,在电场力作用下沿曲线abc 从a 运动到c ,质点的速率是递减的。

关于b 点电场强度E 的方向,以下图示中可能正确的选项是〔虚线是曲线在b 点的切线〕〔〕A 、B 、C 、D 、6.如下图匀强电场E 的区域内,在O 点处放置一点电荷+Q ,a 、b 、c 、d 、e 、f 为以O 点为球心的球面上的点,aecf 平面与电场平行,bedf 平面与电场垂直,法中正确的选项是〔〕 A 、b 、d 两点的电场强度相同B 、a 点的电势等于f 点的电势C 、点电荷+q 在球面上任意两点之间移动时,电场力一定做功D 、将点电荷+q 在球面上任意两点之间移动,从球面上a 点移动到c 点的电势能变化量一定最大7、为探究小灯泡L 的伏安特性,连好电路后闭合开关,通过移动变阻器的滑片,使小灯泡中的电流由零开始逐渐增大,直到小灯泡正常发光。

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2019学年宁波六校高二上期中
一、选择题:每小题4分,共40分
1. 空间中一点()2,3,1A -到平面XOY 的距离为( )
A .2
B .3
C .1
D
2. 若点(),3P a 到直线4310x y -+=的距离为4,且在不等式230x y +->表示的平面区域内,则点P 的
横坐标是( )
A .7或3-
B .7
C .3-
D .7-或3
3. 设m ,n 是两条不同的直线,α,β是两个不同的平面,则下列命题中正确的是( ) A .若m α∥,n α∥,则m n ∥ B .若αβ∥,m α⊂,n β⊂,则m n ∥
C .若m α
β=,n α⊂,n m ⊥,则n β⊥
D .若m α⊥, m n ∥,n β⊂,则αβ⊥ 4. 在平面直角坐标系中,(),M x y 为不等式组220
210380
x y x y x y --≥⎧⎪
+-≥⎨⎪+-≤⎩
所表示的区域上一动点,则y x 的最小值为
( )
A .2
B .1
C .13
-
D .12
-
5. 直线()1:3453l a x y a ++=-和直线()2:258l x a y ++=平行,则a =( )
A .7-或1-
B .1-
C .7或1
D .7-
6. 长方体1111ABCD A B C D -中,11AA AD ==,2AB =,E 为11A B 中点,则异面直线1AD 与BE 所成角为
( )
A .30︒
B .45︒
C .60︒
D .90︒
7. 已知点(),M a b 在圆O :221x y +=外,则直线1ax by +=与圆O 的位置关系是( ) A .相交 B .相切
C .相离
D .不确定
8. 已知直线:l y x m =+
与曲线x =m 的取值范围是( )
A
.⎡-⎣
B
.(2⎤--⎦
C
.⎡⎣ D
.(
⎤-⎦
9. 如图,在四棱锥S ABCD -中,底面ABCD 为正方形,且SA SB SC SD ===,其中E M N 、、分别
是BC CD SC 、、的中点,动点P 在线段MN 上运动时,下列四个结论:①EP AC ⊥;②E P B D ∥;③EP ∥面SBD ;④EP ⊥面SAC ,其中恒成立的是 ( )
A .①③
B .③④
C .①④
D .②③
A P N E
D B
M
S
10. 若圆2244100x y x y +---=上至少有三个不同的点到直线l :0ax by +=
的距离为则直线l 的倾斜角的取值范围是( )
A .124π
π⎡⎤⎢⎥⎣⎦,
B .51212π
π⎡⎤⎢⎥⎣⎦,
C .63ππ⎡⎤⎢⎥⎣⎦,
D .02π⎡
⎤⎢⎥⎣
⎦,
二、填空题:单空题每题4分,多空题每题6分
11.
直线10x +=的斜率为 ,倾斜角的大小是 .
12. 已知方程22220x y x y m ++++=表示圆,则圆心坐标为 ,实数m 的取值范围是 . 13. 《九章算术》中的“邪田”意为直角梯形,上、下底称为畔,高称为正广,非高腰边称为邪.在四棱
锥P ABCD -中,底面ABCD 为邪田,两畔CD ,AB 长分别为1,3,正广AD
长为,PD ⊥平面ABCD ,则邪田ABCD 的邪长为 ;邪所在直线与平面PAD 所成角的大小为 . 14. 直线10x y ++=被圆C :222x y +=所截得的弦长为 ;由直线30x y ++=上的一点向圆C
引切线,切线长的最小值为 .
15. 已知0a >,x ,y 满足约束条件()1
33
x x y y a x ⎧≥⎪
+≤⎨⎪≥-⎩
若2z x y =+的最小值为1-,则a = .
16. 如图所示,有一条长度为1的线段MN ,其端点M ,N 在边长为4的正方形ABCD 的四边上滑动,当
点N 绕着正方形的四边滑动一周时,MN 的中点P 所形成的轨迹长度为 .
17. 在ABC △中,
已知AB =
BC =45ABC ∠=︒,D 是边AC 上一点,将ABD △沿BD 折起,
得到三棱锥A BCD -.若该三棱锥的顶点A 在底面BCD 的射影M 在线段BC 上,设BM x =,则x 的取值范围为 .
三、解答题:5小题,共74分
18. 已知平面内两点()86A -,
,()22B ,. (1)求过()23P -,
点且与直线AB 平行的直线l 的方程; (2)一束光线从B 点射向(1)中的直线l ,若反射光线过点A ,求反射光线所在的直线方程.
N
P M
D
C
B
A
19. 如图,在四棱锥P ABCD -,PA ⊥平面ABCD ,
2AB BC ==
,AD CD ==
PA =,120ABC ∠=︒,G 为线段PC 的中点.
(1)证明:BD ⊥面PAC ;
(2)求DG 与平面APC 所成的角的正弦值.
20. 已知圆C :2268210x y x y +--+=,直线l 过顶点()10A ,
. (1)若l 与圆C 相切,求l 的方程;
(2)若l 与圆C 相交于P Q 、两点,求三角形CPQ 面积的最大值,并求此时l 的直线方程.
G
D
C
P
B
A
21. 如图所示的几何体中,PD 垂直于梯形ABCD 所在的平面,2
ADC BAD π
∠=∠=
,F 为PA
的中点,
PD =1
12
AB AD CD ===,四边形PDCE 为矩形,线段PC 交DE 于点N .
(1)求证:AC ∥平面DEF ; (2)求二面角A PB C --的正弦值;
(3)在线段EF 上是否存在一点Q ,使得BQ 与平面BCP 所成角的大小为6
π
?若存在,求出FQ 的 长;若不存在,请说明理由.
22. 若圆C 经过坐标原点和点()60,,且与直线1y =相切,从圆C 外一点()P a b ,向该圆引切线PT ,T
为切点.
(1)求圆C 的方程;
(2)已知点()22Q -,
,且PT PQ =,求点P 的轨迹方程,并判断点P 是否总在某一定直线l 上,若是,求出l 的方程;若不是,请说明理由;
(3)若(2)中直线l 与x 轴的交点为F ,点M N 、是直线6x =上两动点,且以M N 、为直径的圆
E 过点
F ,圆E 是否过定点?证明你的结论.
P
Q B
E
C
D
A。

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