2016-2017杭州春蕾中学10月月考卷
浙江省杭州市上学期数学10月月考试卷
八年级上学期数学10月月考试卷一、单项选择题1.在以下绿色食品、回收、节能、节水四个标志中,是轴对称图形的是〔〕A. B. C. D.2.以下各组数分别是三根小木棒的长度,将它们首尾相连能摆成三角形的是〔〕A. 3cm,4cm,8cmB. 4cm,4cm,8cmC. 5cm,6cm,8cmD. 5cm,5cm,12cm3.如图,,那么的度数是〔〕A. B. C. D.4.对于命题“如果,那么〞,能说明它是假命题的反例是〔〕A. B.C. D.5.以下命题中,是真命题的是( )A. 成轴对称的两个图形是全等图形B. 面积相等的两个三角形全等C. 三角形的三条高线相交于三角形内一点D. 内错角相等6.如图,点A,D,C,F在同一条直线上,AB=DE,BC=EF,要使△ABC≌△DEF,依据“SSS〞还需要添加一个条件是( )A. AD=CDB. AD=CFC. BC∥EFD. DC=CF7.如图是尺规作图法作的平分线时的痕迹图,能判定的理由是〔〕A. B. C. D.8.如图,中,边的垂直平分线交于点,,,,那么的周长为〔〕A. 18B. 15C. 10D. 119.小王、小陈、小张当中有一人做了一件好事,另两人也都知道是谁做了这件事.老师在了解情况时,他们三人分别说了下面几句话:小陈:“我没做这件事.〞“小张也没做这件事.〞小王:“我没做这件事.〞“小陈也没做这件事.〞小张:“我没做这件事.〞“我也不知道谁做了这件事.〞他们每人都说了一句假话,一句真话,做好事的人是〔〕A. 小王B. 小陈C. 小张D. 不能确定10.如图,AC平分,于E,,那么以下结论① ;② ;③ ;④ .其中,正确结论的个数〔〕A. 1个B. 2个C. 3个D. 4个二、填空题11.命题“对顶角相等〞的逆命题是一个________命题〔填“真〞或“假〞〕.12.一个等腰三角形的两边长分别为3和6,那么等腰三角形的周长是________.13.如图,是△ABC的外角,假设,,那么________度.14.如图,AE是△ABC的边BC上的中线,假设AB=8cm,△ACE的周长比△AEB的周长多2cm,那么AC=________.15.如图,在中,是边上的高,是边上的高,且,交于点,假设,BD=8,,那么线段的长度为________.16.如图,在中,,分别作其内角与外角的平分线,且两条角平分线所在的直线交于点,那么________度;分别作与的平分线,且两条角平分线交于点,那么________度.三、解答题17.如图,在正方形网格上有一个△ABC.〔 1 〕画出△ABC关于直线l对称的图形;〔 2 〕在直线l上找一点P,使PB+PC的长最短.〔不写作法,保存作图痕迹〕18.如图,为的中线,延长,分别过点,作,.求证:.19.如图,在和中,,,.求证:.20.,的三边长分别为,,,且,满足,为方程的解,求的周长,并判断的形状.21.如图,在中,是边上的高线.〔1〕假设是边上的中线,,.求的长.〔2〕假设是的平分线,,,求的大小.22.在一次数学探究活动中:如图,在△ABC中,AB=5,AC=9,AD是BC边上的中线,求AD的取值范围.小明给出了一种方法,步骤如下:①过点C作一条与AB平行的线;②延长AD交这条平行线于点E;③通过证明得到AD=DE,AB=CE;④利用△ACE三边的数量关系得到AD的取值范围.根据这个方法,请你完成下面两个问题:〔1〕求证:AD=DE,AB=CE;〔2〕求AD的取值范围.23.如图,中,,分别平分和,,相交于点,.〔1〕求的度数;〔2〕判断,,之间的等量关系,并证明你的结论.答案解析局部一、单项选择题1.【解析】【解答】解:A、不是轴对称图形,故A选项不符合题意;B、不是轴对称图形,故B选项不符合题意;C、不是轴对称图形,故C选项不符合题意;D、是轴对称图形,故D选项符合题意.故答案为:D.【分析】如果一个图形沿着一条直线对折后两局部完全重合,这样的图形叫做轴对称图形,这条直线叫做对称轴,根据定义即可一一判断得出答案.2.【解析】【解答】解:A选项,3+4<8,不能构成三角形,故A错误;B选项,4+4=8,不能构成三角形,故B错误;C选项,5+6>8,能构成三角形,故C正确;D选项,5+5<12,不能构成三角形,故D错误;应选C.【分析】此题主要考查了三角形的三边关系:任意两边之和大于第三边. 较直接的方法是,判断两条较小的边之和大于第三边,便能构成三角形.3.【解析】【解答】解:∵△ABC≌A′B′C′,∴∠B=∠B′=51°,在△ABC中,∠C=180°−∠A−∠B=180°−56°−51°=73°.故答案为:D.【分析】根据全等三角形对应角相等求出∠B=∠B′,再根据三角形内角和定理列式进行计算即可得解. 4.【解析】【解答】解:A、满足且∠1=∠2,能说明原命题是假命题,本选项正确;B、,不满足,不能说明原命题是假命题,本选项错误;C、,满足但不满足∠1=∠2,不能说明原命题是假命题,本选项错误;D、,不满足,不能说明原命题是假命题,本选项错误.故答案为:A.【分析】要证明一个命题是假命题的反例,需要满足命题的条件,但又不满足命题的结论即可,即只要说明且∠1=∠2,即可,据此逐项判断即可.5.【解析】【解答】解:A、成轴对称的两个图形是全等形,此命题是真命题,故A符合题意;B、面积相等的两个三角形不一定全等,故B不符合题意;C、三角形的三条高线相交于三角形内一点是假命题,只有锐角三角形的三条高线交点在三角形内,故C 不符合题意;D、内错角相等时假命题,两直线平行时,内错角才相等,故D不符合题意;故答案为:A【分析】利用轴对称的性质,可对A作出判断;根据全等三角形的判定,可对B作出判断;三角形的三条高的交点可能在三角形内或三角形外或三角形上,可对C作出判断;两直线平行,内错角才相等,可对D 作出判断,即可得出答案。
浙江省杭州市萧山区临浦片16—17学年八年级10月月考数学试题(附答案)
2016学年第一学期十月份质量检测试卷数学学科一.选择题(每题3分,共30分)1.下列学习用具中,其形状不是轴对称图形的是()A.B.C.D.2.在下列长度的四根木棒中,能与9cm和4cm的两根木棒首尾相接组成一个三角形的是()A. 4cmB. 5cmC. 9cmD. 13cm3.下列语句不是命题的是()A.两直线平行,同位角相等B.作直线AB垂直于直线CDC.若|a|=|b|,则a2=b2 D.同角的补角相等4.下列判断不正确的是()A.有两边和其中一边的对角对应相等的两个三角形全等。
B.三条边对应相等的两个三角形全等。
C.两边及其夹角对应相等的两个三角形全等。
D.有两角及其中一个角的对边对应相等的两个三角形全等5.某同学把一块三角形的玻璃打碎了3块,现在要到玻璃店去配一块完全一样的玻璃,那么最省事的方法是()A.带①去B.带②去C.带③去D.带①②③去6.如图,小强利用全等三角形的知识测量池塘两端M,N的距离,如果△PQO≌△NMO,则只需测出其长度的线段是()A.PO B.PQ C.MO D.MQ7.如图,在△ABC 中,AD 是角平分线,AE 是高,已知∠B=50°,∠C=60°,那么∠EAD 的度数为( )A.35°B.5°C.15°D.25°8.如图,在△ABC 中,AB =AC ,AD 是ABC △的角平分线,AC BE ⊥,AB CF ⊥,垂足分别为E ,F .则下列四个结论:①AD 上任意一点到点C ,B 的距离相等;②AD 上任意一点到边AB ,AC 的距离相等;③BD =CD ,AD ⊥BC ;④∠BDE =∠CDF .其中,正确的个数为 ( )A .4个B .3个C .2个D .1个(第8题) (第9题) (第10题)9.在△ABC 中,AB =AC ,∠A =70°,∠ABC=∠ACB ,∠OBC =∠OCA ,则∠BOC 的度数为( )A .140°B .125°C .110°D .115 °10、如图,∠BAC=130°,若MP 和QN 分别垂直平分AB 和AC ,则∠PAQ 等于 ( ) A.50° B.75° C.80° D.105° 二、填空题(每题4分,共24分)11.把命题“两直线平行,内错角相等”写成“如果…那么…”的形式是__________________. 12.在△ABC 中,∠A=30°,∠B=55°,延长AC 到D ,则∠BCD= 度.13.两根木棒分别为3cm 和6cm ,要选择第三根木棒,将它们钉成一个三角形,如果第三根 木棒长为偶数,那么第三根木棒可能的长度是。
杭州市春蕾中学2017九年级上英语期中测试卷
2017学年第一学期初三年级英语学科期中测试卷【春蕾】笔试部分The underlined part in the word “heard” is pronounced as ____.A. /ɪə/B. /ɜː/C. /ə/D./əʊ/---I knocked into a tree when I went to the train station with my friend.---I supposed you ____ too fast.A. driveB. are drivingC. droveD. were driving---It’s said that she’s a(n) ____ person.---Yes. She knows a lot.A. crazyB. confidentC. energeticD. knowledgeableAfter discussing, the students ____ some good ideas to work on the project.A. come up withB. put upC. set upD. caught up with---You haven’t been to Xi Sha Island, have you?---____. I really hope to visit it some day.A. Yes, I haveB. No, I haven’tC. Certainly, I haven’tD. No, I haveMr. Paul often spoke to us and ____ carefully. We loved him very much.A. was always listenedB. was always listened toC. always was listened toD. always listened toJerry was waiting for his friend, when he saw a strange woman ____ out of a little store.A. wentB. getsC. getD. to go---It’s cold outside. Do you mind if I close the window?---____.A. Yes, I don’t mindB. No, go right ahead.C. Yes, please turn it downD. Don’t worry. You’ll get used to it soon.---Excuse me, please tell me ____.---There is a supermarket over there. You can get some there.A. how I can find a supermarketB. where the supermarket isC. where I can buy some fruitD. where can I buy some fruit---Someone is knocking at the door. Who ____ it be?---It ____ be Tom. He is still on school.A. may; can’tB. can; mustn’tC. might; couldn’tD. could; may not---Be careful! You might fall into the water.---Thank you. I ____ I ____ so close to the pool.A. didn’t know; am standingB. don’t know; am standingC. didn’t know; was standingD. didn’t know; would stand---You were injured in the accident, weren’t you?---____, but look, I’m all right now.A. Yes, I wasB. Yes, I wasn’tC. No, I wasD. No, I wasn’t---Have you found the information about the singer ____ sings 江南style.---Not yet. I’ll search some on the Internet.A. whoB. whatC. whomD. which---They say there’s a new clothes store nearby.---Yes, and it ____ for no more than two weeks.A. has been openB. opensC. is openingD. opened---I dislike shopping online, I prefer to actually see and touch what I’m buying before I pay for it, especially for clothes and shoes.---That’s right. ____.A. Seeing is believingB. Clothes do not make the manC. The first step is always the hardestD. You are never too old to learn.完型填空I learned how to accept life as it is from my father. __1__, he did not teach me acceptance when he was strong and healthy, but rather when he was __2__ and ill.My father was __3__ a strong man who loved being active. But a terrible illness __4__ all that away. Now he can no long walk. And he must sit quietly in a chair all day. Even talking is __5__. One night, I went to visit him with my sisters. I told them about one of my beliefs. I said that we must very often give things up __6__ we grow our youth, our beauty, our friends, but it always __7__ that after we give something up. We gain something new in its place. Then suddenly my father spoke up, “But, Peter, I gave up __8__! What did I gain?” I thought and thought, but I could not think of anything to say. __9__ he answered his own question: “I __10__ the love of my family.” I looked at my sisters and saw tears in their eyes along with hope and thankfulness.I was also __11__ by his words. After that, when I began to feel irritated(恼怒的) at someone, I would remember his words and become __12__. If he could replace his great pain with a feeling of love for others, then I should be __13__ to give up my small irritations. In this __14__, I learned the power of acceptance from my father.Sometimes I __15__ what other things I could have learned from him if I had listened more carefully when I was a boy. For now, though I am grateful for this one gift.A. CertainlyB. ThereforeC. HoweverD. MeanwhileA. tiredB. weakC. poorD. slowA. alreadyB. stillC. onlyD. onceA. tookB. threwC. sentD. putA. stressfulB. difficultC. impossibleD. hopelessA. asB. sinceC. beforeD. tillA. suggestsB. promisesC. seemsD. requiresA. somethingB. anythingC. nothingD. everythingA. surprisinglyB. immediatelyC. naturallyD. certainlyA. hadB. acceptedC. gainedD. enjoyedA. touchedB. astonishedC. attractedD. warnedA. quietB. calmC. relaxedD. happyA. readyB. likelyC. freeD. ableA. caseB. formC. methodD. wayA. doubtB. wonderC. knowD. guess阅读理解A“Do you like my dress?’ She asked a stranger. “My mum made it just for me,” She said with tears in her eyes.“Well, I think it’s very pretty, so tell me, little girl, why are you crying?”The little girl answered in a low voice, “After mum made me this dress, she went away. My dad says that she’s up in heaven now with Grandfather.”Finally, the woman realized why she was crying. She felt very sorry for the little girl and gently held the child in her arms.Then suddenly the little girl did something a bit strange. She stopped crying, walked back from the woman and began to sing. She sang softly. It was the sweetest sound the woman had ever heard, almost like the song of a very small bird.After the child stopped singing, she said to the lady, “My mum often sang that song to me before she went away, and she asked me to sing it whenever I started crying and it would make me stop.”“See”, she said loudly, “it did, and now my eyes are dry!”Just before the lady wanted to go, the girl showed her a spot(印迹) on her dress, and said, “Right here is where my mum kissed my dress, and here,” pointing to another spot, “and here is another kiss, and here, and here. Mum said that she put all those kisses on my dress so that I would forget my sadness.”Then the lady realized that she wasn’t just looking at a dress, no, she was looking at a mother. The mother knew that she was going away and would not be there to kiss away her daughter’s hurts any longer.So the mother gave all her love to her beautiful daughter and put it into this dress. Now her child was wearing it so proudly.The lady no longer saw a little girl wearing a simple dress. She saw a child wrapped(包) in her mother’s love.Who told the little girl to sing a song when she was crying?A. the ladyB. her fatherC. her motherD. her grandfatherWhy was the little girl crying?A. Because her mother went to a big city.B. Because her mother died.C. Because her mother went out with her grandfather.D. Because her mother was ill in hospital.The little girl showed the lady ____.A. how rich she wasB. her happinessC. how beautiful she wasD. her mother’s loveWhat do we know about the lady in the passage?A. She was kind to the girlB. She was beautifulC. She was worried to see the girlD. She was a careless womanIt can be learned from the passage that ____.A. The girl’s mother went away because of cancer.B. Mother’s love is the greatest in the world.C. A girl should wear a dress made by her mother.D. A mother should take her child with her wherever she goes.BHave you ever wondered why birds sing? Maybe you thought that they were just happy. After all,you probably sing when you are happy.Some scientists believes that birds do sing some of time just because they are happy. However, they sing most of the time for a very different reason. Their singing is a warning to other birds to stay out of their territory.Do you know what a “territory” is? A territory is an area that an animal, usually the male(man, instead of woman), claims(声明) as its won. Only he and his family are welcome there. No other families of the same kind are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and frighten(恐吓) you, you might shout. Probably this would be enough to frighten him away.If so, you have actually frightened the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting(筑巢) season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.Birds sing loudest in spring when they are trying to attract a mate and warn others not to enter the territory of theirs.You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.Some scientists believe that most of the time birds’ singing is actually ____.A. an expression of happinessB. a way of warningC. an expression of angerD. a way of greetingIt can be inferred from the text that ____.A. Bird’s song is not enough to keep an outsider awayB. Bird’s sing most of the just because they are happyC. Bird s sing loudest when it’s spring only to warn others not to go into their territoryD. Birds sing mostly to attract mates and set up their territories.The underlined word “territory” in the second paragraph refers to ____.A. a house where families or friends are welcomeB. a place where a bird shuts at the top of its voiceC. an area for which birds fight against each otherD. an area which an animal or bird says it’s ownWhy do birds keep on singing at nesting season?A. They want to invite more friends of his kindB. Their singing helps frighten outsiders awayC. They are frightened in their nests in daytime.D. They want to find if there are outsiders around.How does the writer explain birds’ singing?A. by comparing birds with human beingsB. by reporting experiment resultsC. by writing diaries of birds’ daily lifeD. by telling birds’ interesting stories第二节: Emerson, Jerry, Aura, Sal 和Knoll 正在网上为自己征友, 第56-60题是他们的基本信息和不同需求, 阅读下面刘伟来自交友网站不同人员的相关信息(A、B、C、D、E、F), 为每个人选择合适的朋友, 选项中有一项是多余的.My name is Emerson. I live in the western part of Russia. I’m interested in meeting new people and seeing different cultures. As I’m learning French now, I’m looking for friends with whom I can speak a little bit of French. I can also teach you Russian.I’m Jerry. I am 29 years old and I am from Germany. I am a friendly and easy-going person. I like to learn more about other people and other cultures. Now I am interested in people, so I want to find a pen pal who likes writing people.My name is Aura and I am 25 years old. I come from India. My friends often say that I am really kind-hearted and easy-going. I like to know about different people from different countries. I would like to make friends with Americans who are in their 20s.I am Sal and I am 21 years old. I am an Italian. I love animals and playing sports or games with my friends. My friends say that I am a shy, friendly boy. I am looking for true friends who are fun to be with and like to talk a lot.I am Knoll. I am from the Philippines and I am I am 18 years old. I love travelling, and I have been to the United States, Japan, Korea and Hong Kong. I love music and watching TV. I want to make friends with those who are from the United States, because I am planning to continue my studies there after college.A. I am Sophia and I am Korean. I like to have fun and try something new and interesting. My friends say that I am a fun, friendly girl. Also, I like talking. My favorite sports are soccer and baseball. I am looking for friends, especially from Europe, because I am going to study Italian in Rome next year.B. I am Alicia. I am from America. I am 17 years old and I am in high school. I am a fun, energetic person. I like to play with my friends. I like listening to music and dancing. What’s more, I like travelling very much. I want to meet people who are under 20 year old and have similar interests.C. My name is Jessica. I am 30 years old and I am working as a secretary. I often spend my evenings staying at home with a few friends instead of going out. I prefer to listen to others rather than talk. I worry a lot, but I also care a lot about others. I would really like to find pen pals from Italy.D. My name is Jefferson and I am 26. I am from New York. I enjoy learning about different places and want to visit them myself some day. I am interested in Indian culture, so I want to find a friend who is from Indian.E. I am Max. I am a lawyer and writer. I love nature, writing poetry and drinking a nice glass of red wine. I enjoy cooking, crying cycling and traveling. I love Germany and would like to make German friends to practice my German and learn more about Germany.F. I am Pierre and I come from Canada. I work as a French teacher and French is my first language. I love sport, watching movies and outdoor activities like fishing and camping. Also, travelling is one of my hobbies. I would like to make friends with people who are from Russia and Mexico.词语填空If you feel stressed out, what do you do? Do some exercise or drink some tea? These may __1__work. You may ask what else you can do to deal with you stress.The first step is to know __2__ you feel stressed. Early signs include back pain, headache, sleeping trouble, weight loss and so on.The __3__ step is to choose a way to deal with the stress. If you can, get rid of the cause of the stress. It is very helpful to find out the reasons __4__ make you feel stressed.Change your attitude towards your stress, positive attitude can __5__ help you keep away from the stress.Face up to what is __6__ the stress until it isn’t stressful anymore.Find a new hobby or sport. Take time to do what you enjoy.Don’t always hid __7__ feelings. Don’t he afraid to cry. Crying can help you let out bad emotions.__8__ a stress free place in your home. Your room would be a nice place for you. You’ll feel calm and __9__ in your own room.If you feel that you cannot deal with the stress on your own, think about outside help. You can talk to your __10__ and friends. They may offer you some help.单词拼写All my life I have tried to be an h____ man.Don’t be afraid to make m____ when you speak English.I don’t like noodles at all. Bring me rice and meat i____.---Is that red car Mrs. Brown’s?---Yes, it’s h____. Beautiful, isn’t it?It is time for our government to find out the causes of the school bus accidents and try to d____ with this problem.My grandpa was born on November 14th, 1922. So tomorrow he will be n____.Bill is not c____ enough. He’s afraid of giving speech in front of the class.I prefer teachers that are ____ and friendly.---Why not go on a vacation with us?---I can’t a____ to take the trip this time because I put all my money into the new company.There is a s____ of fried chicken in this room. I like it for lunch.书面表达最近,本班对学生的饮食习惯做了调查,发现一些问题,有些学生的饮食习惯很不健康,请谈谈你的看法注意: 1. 内容必须包括表格中的信息2. 开头已经为你写好, 你只需接着写3. 词数80个左右, 开头部分内容不计入总词数Recently our class did a survey about what diets the student eat. The results are not pleasant. _______________________________________________________________________________________参考答案:BDDAB BCBCA CAAAACBDAB ACDAC ABDDBCBDAB BDDBA FEDABboth; when; next; that; greatly; causing; your; Find; safe; parentshonest; mistakes; instead; hers; deal; ninety; confident; patient; afford; smell。
浙江省2016-2017学年七年级下学期第一次月考数学试卷4
浙江省2016-2017学年七年级下学期第一次月考数学试卷一、选择题:(每小题3分,共30分) 1.在以下实数3π,1.414,16中无理数有( )A .4个B .3个C .2个D .1个 2.下列各图中,∠1与∠2是对顶角的是 ( )3.下图是北京奥运会福娃图,通过平移可将福娃“欢欢”移动到图( )(欢欢) A B C D 4.如图,已知∠1=70°,要使AB ∥CD ,则须具备另一个条件( ) A .∠2=70° B .∠2=100° C .∠2=110° D .∠3=110°5.若p 在第二象限,且到x 轴的距离为3,到y 轴的距离为4,则点p 的坐标为( )A .(3,4)B .(3,4)-C .(4,3)-D .(4,3)6.如图,直线AB ,CD 相交于点O ,射线OM 平分∠AOC ,ON ⊥OM ,若∠AOM =35°,则∠CON 的度数为( ) 7.课间操时,小华、小军、小高的位置如图3所示,小华的位置用(0,0)表示,小军的位置用(3,2)表示,那么小高的位置可以表示为( )A .(1,6)B .(1,5)C .(5,1)D .(6,1)8.下列整数中,与错误!未找到引用源。
最接近的是 ··································· ( )A .11B .10C .9D .89.如图,数轴上表示2,5的对应点分别为C 、B ,C 是AB 的中点,则A 表示的数是( )班级 姓名 号 考试密 封 线 内 不 要 答 题 ……………………………………………………………………………装………………………………订……………………………………………………………………A .- 5B .2- 5C .4- 5 D.5-210.对于平面内任一点(m ,n ),规定以下两种变换:①()()f m n m n =-,,,如()()f 2121=- ,,;②()()g m n m n =--,,,如()()g 2121=-- ,,.按照以上变换有:()()()f g 34f 3434⎡⎤=--=-⎣⎦ ,,,,那么()g f 32⎡-⎤⎣⎦ ,]等于( ) A .(3,2) B .(3,2-,) C .(3-,2) D .(3-,2-,) 二、填空题(本题共30分,每空2分)11.电影票上“4排5号”记作(4,5),则“5排4号”记作_______________. 12.如图:从书店到公路最近的是 号路线,依据的数学道理是 .第12题 第14题 第15题 第20题 13.49的平方根是_ ____;81 的算术平方根是________;若125)2(3=+x ,则x= . 14.如图,AC ⊥BC ,C 为垂足,CD ⊥AB ,D 为垂足,BC =8,CD =4.8,BD =6.4,AD =3.6,AC =6,点A 到BC 的距离是 ,A ,B 两点间的距离是 . 15.如图,已知a ∥b ,∠1=130°,∠2=90°,则∠3= 。
杭州市春蕾中学2015初二10月份数学月考试卷
月检测卷 八年级数学考生须知:1.本试卷满分120分,考试时间100分钟.2.答题前,必须在答题纸指定位置填写学校、班级、姓名、座位号. 3.必须在答题纸的对应答题位置上答题,写在其他地方无效. 4.不能使用计算器;考试结束后,上交答题纸.试题卷一.选择题:(本题共有10小题,每小题3分,共30分)1.如果一个三角形的两边长分别为2和5,则第三边长可能是( )A .2B .3C .5D .8 2.命题“三角形的内角和等于180︒”是( )A .假命题B .定义C .定理D .公理 3.如图,在1∠、2∠、3∠和4∠这四个角中,属于A B C △外角的有( ) A .1个 B .2个 C .3个 D .4个21CBA4.如图,在A B C △中,A B A C m ==,A B 的垂直平分线交A C 于G ,B C n =,则A B C △的周长是 ( )A .2mB .m n +C .m n -D .2nGBA5. A B C △和A B C '''△中,条件①A B A B ''=;②B C BC ''=;③A C AC ''=;④A A '∠=∠;⑤B B '∠=∠;⑥C C '∠=∠,则下列各组条件中不能保证'''A B C A B C △≌△的是( ) A .①②③ B . ①②⑤ C . ①③⑤ D .②⑤⑥6.如图,小敏做了一个角平分仪A B C D ,其中A B A D =,B C D C =,将仪器上的点A 与P R Q ∠的顶点R 重合,调整A B 和A D ,使他们分别落在角的两边上,过点A ,C 画一条射线A E ,A E 就是P R Q ∠的平分线.此角平分线仪的画图原理是:根据仪器结构,可得A B C A D C △≌△,这样就有Q A E P A E ∠=∠.则说明这两个三角形全等的依据是( )A .SA SB .A SAC .A A SD .SSSC PDA(R)B QE7.如图,A ,B ,C ,D ,E ,F 是平面上的6个点,则A B C D E F∠+∠+∠+∠+∠+∠的度数是( )A .180︒B .360︒C .540︒D .720︒FEDCBA8.如图,用四个螺丝将四条不可弯曲的木条围成一个木框,不计螺丝大小,其中相邻两螺丝的距离依序为2、3、4、6,且相邻两木条的夹角均可调整,若调整木条的夹角时不破坏此木框,则任两螺丝间距离的最大值为( )A .5B .6C .7D .109.如图,在A B C △中,A D 是角平分线,A E 是高,已知2B A C B ∠=∠,2B D AE ∠=∠,那么A C B∠为( )A .80︒B .72︒C .48︒D .36︒ED CBA10.如图,在A B C △中,B A C ∠和A B C ∠的平分线A E 、B F 相交于点O .A E交B C 于E ,B F 交A C于F ,过点O 作O DB C⊥于D .下列四个结论:①1902A O BC∠=︒+∠;②当60C∠=︒时,A FB E A B +=;③若O D a=,2A B B C C A b +++,则A B C S a b =△.其中正确的是( )A .①②B .②③C . ①②③D . ①③FDOE CBA二.填空题:(本题共有6个小题,每小题4分,共24分)11.在A B C △中,9A B =,2B C =,周长是偶数,则A C = . 12.如图,已知12∠=∠,要说明A B C B A D △≌△.(1)若以“SA S ”为依据,则需添加一个条件是 ; (2)若以“A SA ”为依据,则需添加一个条件是 .DBCA13.在A B C △中,2015A B =,2014A C =,A D 是A B C ∆的中线,则A B D △与A C D △的周长之差是 ;面积之比是 .14.如图,65A ∠=︒,75B ∠=︒,将纸片的一角折叠,使点C 落在A B C △外,若220∠=︒,则1∠的度数为 度.21C'CDAB15.下列命题是真命题的有(1)全等三角形对应角的角平分线相等.(2)三角形一条边的两个顶点到这条边上的中线所在的直线的距离相等. (3)有两边和第三边上的高线对应相等的两个三角形全等.16.已知A B C △中,A α∠=.如图,设B ∠、C ∠的两条三等分角线分别对应交于1O 、2O ,则2B O C ∠=;请你猜想,当B ∠、C ∠同时n 等分时,(1)n-条等分角线分别对应交于1O ,2O , …,1n O - ,如图,则1n B O C-∠=(用含n 和a 的代数式表示).αCO 2O 1CBA三.解答题:(本题共有7小题,共66分)17.(6分)如图,点B 、E 、C 、F 在同一条直线上,A D∠=∠,BD EF∠=∠,B EC F=,求证:A CD F=.FE DCB A18.(8分)如图,要修建一座货物中转站P .按照设计要求:中转站P 到两个城镇A 、B 的距离必须相等,到两条高速公路m 和n 的距离也必须相等,中转站P 应建在什么位置?在图上确定它的 位置(用尺规作图,保留作图痕迹).D19.(8分)如图,O A 和O B 分别为点O 向外延伸的射线,在O A 、O B 上分别取点C 、D ,将C 、D相连,60B O A ∠=︒,C D O ∠的平分线与A C D ∠的平分线所在的直线相交于点E ,如果C 、D 分 别可以在射线O A 与O B 上随意移动.(1)当40C D O ∠=︒的度数时,求E ∠的度数.(2)当C 、D 分别可以在射线O A 与O B 上运动时,E ∠的度数是否发生变化.若不变,请说明 理由;若变化,请求出E ∠的变化范围.BCEOA20.(10分)如图,AD BD ⊥,A E 平分B A C ∠,(1)若30B ∠=︒,80A C D ∠=︒,求AED ∠的度数.(2)若B α∠=︒,A C D β∠=︒,直接写出AED ∠的度数.C EBD A21.(10分)(1)如图①AB BD ⊥与点D ,已知A B C D =,B C E D =,求A C E ∠的度数. (2)如图②ABE △与C D A △中,90C C A E ∠=∠=︒,A B C D =,A E A C =,问这两个直 角三角形的边A D 与EB 之间有何关系?并说明理由.②①EDCBAD EBA22.(12分)如图:A C B C =,D C C E =,60A C B D C E ∠=∠=︒,B ,C ,E 三点在一直线上,B D,A E 交于点O ,B D 与AC 交于点M ,A E 与CD 交于点N .求证:(1)B D A E =.(2)C M C N =. (3)60A O B ∠=︒.NMOEDBA23.(12分)如图,在A B C △中,B A D D A C ∠=∠,D F AB ⊥,D M A C ⊥,10A F =cm ,14A C =cm ,动点E 以2cm/s 的速度从A 点向F 点运动,动点G 以1cm/s 的速度从C 点向A 点运动,当一个点 到达终点时,另一个点随之停止运动,设运动时间为t 秒.(1)在运动过程中,不管t 取何值,都有A E D D G C S S =△△; (2)当t 取何值时,D F E △与D M G △全等;(3)在(2)的条件下,若119126B D D C=,228c mA E DS =△,求B F D S △.GM FE CBA。
理化科学杭州市2016-2017学年第一学期春蕾中学十月月考科学卷(教研成果分享)
2016-2017学年浙江省杭州市春蕾中学九年级(上)第一次月考科学试卷一、选择题(本题有20小题,每小题只有一个正确答案,每小题3分,共60分)1.下列有关物质的化学式、名称、俗名不完全对应的是()A.NaCl 氯化钠食盐B.CaO 氧化钙熟石灰C.Na2CO3碳酸钠纯碱D.NaOH 氢氧化钠烧碱2.厨房里发生的下列变化,属于物理变化的是()A.煤气燃烧B.食物腐败C.瓷碗打碎D.面粉发酵3.区分盐酸和硫酸最好选用的试剂是()A.硝酸银溶液B.硝酸钡溶液C.碳酸钠溶液D.PH值试纸4.下列化学方程式书写正确的是()A.2Fe+3H2SO4=Fe2(SO4)3+3H2↑B.H2SO4+Cu(OH)2=CuSO4↓+2H2OC.Cu+2HCl=CuCl2+H2↑D.CO2+2NaOH=Na2CO3+H2O5.“跳远”是一项常见的体育运动.跳远运动员在比赛中都是先助跑一段距离后才起跳,这样做是为了()A.增大了跳远运动员的惯性B.减小了跳远运动员的惯性C.增大了跳远运动员的动能D.减小了跳远运动员的动能6.三月中旬,湖南媒体报道,不法商贩用具有漂白防腐作用的焦亚硫酸钠(化学式为Na2S2O5)处理生姜,使生姜变得又黄又亮,从而谋取利益.过量的焦亚硫酸钠会严重危害人体健康.Na2S2O5中硫元素的化合价为()A.﹣2 B.+2 C.+4 D.+67.一些物质在常温下的近似pH如下表:物质血浆胃液正常雨水葡萄汁PH 7.35~7.45 0.9~1.5 ≈5.6 3.5~4.5下列有关上述四种物质的说法中正确的是()A.只有葡萄汁显酸性B.只有血浆显碱性C.正常雨水显中性D.胃酸过多的人应多饮用葡萄汁8.下列物质露置于空气中,没有发生化学变化而质量增大的是()A.浓硫酸B.浓盐酸C.生石灰D.氢氧化钠9.甲、乙两同学进行爬竿比赛,甲用了9秒,乙用了10秒,都爬上了竿顶(竿长相等),甲、乙两人的体重之比是6﹕5,则甲、乙两人爬杆的功率之比是()A.3﹕4 B.4﹕3 C.25﹕27 D.27﹕2510.小明同学往氢氧化钠溶液中滴加稀盐酸研究中和反应时,忘记了滴加酸碱指示剂.为了确认滴加的盐酸是否已经过量,从烧杯中取少量反应后的溶液于试管中,用某种试剂进行检验.下表是小明同学设计的实验方案,其中不正确的是()实验方案使用试剂判断方法①铁粉如果有气泡,表明盐酸已经过量②pH试纸如果pH<7,表明盐酸已经过量③硝酸银溶液如果有白色沉淀产生,表明盐酸已经过量④紫色石蕊试液如果溶液变成红色,表明盐酸已经过量A.①B.②C.③D.④11.质量相同的铁块和铝块,挂在杠杆AB两端,杠杆在水平位置平衡,如图所示,现把铁块和铝块同时浸没于水中,已知ρ铁>ρ铝,则有()A.杠杆AB仍保持平衡B.杠杆A端会上升C.杠杆A端会下降D.杠杆是否平衡,无法判12.跳伞运动员跳出飞机后,立即打开降落伞.下落过程中所受空气阻力随运动速度增大而增大,直至与重力等大.在整个下落过程中,运动员和降落伞的()A.势能不断减少,动能不断增加,机械能不变B.势能不断减少,动能不断增加,机械能减少C.势能不断减少,动能先增加然后保持不变,机械能减少D.势能不断减少,动能先增加后减少,机械能不变13.将一定质量的Ba(OH)2溶液与Na2CO3溶液混合恰好完全反应,向反应后的混合物中加入稀盐酸,产生气体的体积与加入稀盐酸的体积的关系如图所示,下列说法中正确的是()A.N 点时,所得溶液的pH=7B.Q点时,所得溶液中的溶质只含有BaCl2C.O至P段发生反应的化学方程式为NaOH+HCl═NaCl+H2OD.P至Q段发生反应的化学方程式为Ba(OH)2+2HCl═BaCl2+2H2O14.一根长为L、重为G的均匀木条,支在中间刚好平衡,如果在左端锯下全长的1/4,叠放在左端剩余部分的上面,如图所示,则()A.仍平衡B.左端下沉C.右端下沉D.无法确定15.下列叙述中,正确的是()A.运动员将标枪投出去,运动员对标枪没有做功B.降落伞竖直下落,重力做了功C.人提着重物在水平方向上通过一段距离,人的提力对重物做了功D.小球在光滑的桌面上滚动一段距离,桌面对小球的支持力做了功16.如图所示,X溶液与AgNO3、Na2CO3、Na2SO4三种溶溶液发生反应均生成白色沉淀.则X可能是下列哪种物质的溶液()A.HNO3或KNO3B.HCl或H2SO4C.BaCl2或CaCl2D.NaOH或Ca(OH)217.1970年4月24日,我国第一颗人造地球卫星上天,它绕地球以椭圆轨道运行,近地点离地面高度为439千米,远地点离地面高度为2384千米,如图,它从近地点向远地点运动时,下列说法正确的是()A.势能减小,动能增大B.势能增大,动能减小C.势能增大,动能不变D.势能增大,动能增大18.功率是机器的主要技术指标之一,要根据实际需要选择功率合适的机器.一建筑工地要购置一台起重机,要求起重机能在0.5分钟内将1750千克的建筑材料匀速吊起6米高,应选择的合适起重机功率为()A.350千瓦B.105千瓦C.4千瓦D.350瓦19.某同学为了区别氢氧化钠溶液和澄清石灰水,设计了如下图所示的四组实验方案,其中能达到目的是()A.B.C.D.20.古代护城河上安装的吊桥可以看成一个以O为支点的杠杆,如图所示.一个人通过定滑轮用力将吊桥由图示位置缓慢拉至竖直位置,若用L表示绳对桥板的拉力F的力臂,则关于此过程中L的变化以及乘积FL的变化情况,下列说法正确的是()A.L始终在增加,FL始终在增加B.L始终在增加,FL始终在减小C.L先增加后减小,FL始终在减小D.L先减小后增加,FL先减小后增加二、填空题(本大题共34分)21.(6分)在H、O、C、Cl、Na、Ca六种元素中,选择适当元素,组成符合下列要求的物质,将其化学式填入空格中:(1)改良酸性土壤的碱;(2)可做干燥剂的氧化物;(3)可做建筑材料的盐;(4)汽水中含有的酸;(5)用于金属表面除锈的酸;(6)可去除面团发酵过程中产生过多酸性物质的盐.22.(5分)胃酸的主要成分是盐酸,胃酸过多会引起胃痛.如图是一种治疗胃病药物的标签.胃泰×××抑酸剂计量:每次1~2片,每天3次有效成分:氢氧化铝请回答:(1)该药物的主要作用是,这种药物在胃中发生反应的化学方程式是.(2)胃痛时吃几块苏打饼干(含纯碱)可减轻胃痛,该反应的化学方程式是:.23.(5分)我国国务院在2000年2月批准启动“西气东输”工程,这是我国的一项重大工程,其中“气”是指天然气,主要成分为甲烷(CH4).(1)实验室中制取甲烷所用的原料为无水醋酸钠和氢氧化钠,反应的方程式为CH3COONa+NaOH═X+CH4↑,推断X的化学式为,甲烷宜用(填“向上”或“向下”)排空气法或排水法收集.(2)如图,集气瓶里盛有甲烷,U形管左右液面相平,将整个装置放置在阳光之下一定时间,液面,再将该装置放入黑暗中,若观察到液面仍保持原状,即可证明甲烷是气体.(3)天然气管道在第一次输送到用户家里时必须先在管道内充满氮气,这样做的原因是.24.(6分)小红同学用如图总结了NaOH的四条化学性质(即NaOH与四类物质能够发生化学反应).Ⅰ.为了验证反应①,小红将无色酚酞试液滴入NaOH溶液中,溶液由无色变成.Ⅱ.依据反应④说明NaOH必须密封保存,否则在空气中要变质,其化学反应方程式为:.Ⅲ.除反应物本身,不用其他物质,为了验证反应③能够发生,你选择的物质是.a.Na2CO3b.HClc.FeCl3d.Ba(NO3)2其化学反应方程式为:.25.(6分)如图,杆秤是民间的一种测量工具.使用时,将待测物体挂在秤钩A上,用手拎住秤钮B或C(相当于支点),秤砣D在秤杆E上移动,当杆秤水平平衡时就可以在秤杆上读出读数.(1)从科学的角度来看,杆秤应该是一种测量大小的工具.(2)根据杠杆平衡的条件分析,使用杆秤时,当从秤纽C换到秤纽B时,最大测量值将变.26.(6分)小明为了研究势能的大小的决定因素,他设计了如图甲、乙实验:(1)让质量相同的两个小球沿同一光滑斜面分别从A处和B处开始向下运动,然后与放在水平面上的纸盒相碰,纸盒在水平面上移动一段距离后静止,如图甲所示;(2)再让不同质量的两个小球沿同一光滑斜面分别从B处开始向下运动,然后与放在水平面上的纸盒相碰,纸盒在水平面上移动一段距离后静止,如图乙所示.该实验中势能的大小通过比较来得出.根据如图乙得出的结论是:.三、实验探究题(本大题共58分)27.(8分)为了探究碱的性质,甲、乙两组同学向相同体积的石灰水和烧碱溶液中分别通人CO2,观察到前者变浑浊,后者无明显现象.甲组同学认为CO2能与石灰水反应,但不能与烧碱溶液反应.而乙组同学认为CO2也能与烧碱溶液发生反应.(1)为证明自己的现点,乙组同学又设计并做了以下实验:①选出如图1中正确的CO2气体的发生装置.②收集一瓶CO2气体,注入烧碱溶液后立即塞上带有导管和气球的橡皮塞(如图2),振荡后观察到瓶内气球(填“膨胀”或“收缩”).由此乙组同学认为自己的观点是正确的.(2)甲组同学对此结果提出反驳:因为CO2能溶于水,所以还必须设置对照实验,即用代替烧碱溶液进行实验,如果观察到气球体积变化程度(选填“增大”“不变”“减小”),才能最终证明乙组的观点是正确的.28.(8分)过碳酸钠(Na2CO4)是一种常见的漂白杀菌剂,其水溶液显碱性,能和盐酸发生下列反应:2Na2CO4+4HCl═4NaCl+2CO2↑+O2↑+2H2O.工业用的过碳酸钠往往含有少量的碳酸钠,为了测定其纯度,某小组选择利用一部分下列仪器(包括仪器中的药品)进行实验.请回答下列问题:(1)为完成实验,需要测定过碳酸钠样品与稀盐酸反应过程中产生的(填化学式)的体积,从而推算出过碳酸钠的纯度.(2)请选取该实验需要的装置,并按正确连接顺序排列(填字母,仪器中的试剂皆足量).(3)实验进行一段时间后,不再有气泡产生,此时判定过碳酸钠样品是否完全反应的实验操作方法以及现象是.(4)如果已知过碳酸钠样品已经完全反应,那么你认为可能导致实验误差的原因是(一条即可):.29.(6分)如图所示是稀硫酸与40克质量分数为5%的氢氧化钠溶液反应时,溶液的pH值随加入溶液的质量m的变化关系图.请回答下列问题:(1)写出该反应的化学方程式:.(2)据图分析,在实验操作过程中应是往溶液中滴加另一种溶液.(3)某同学借助无色酚酞试液观察反应进程,当观察到的实验现象为时,反应获得的溶液pH 值恰好为7.30.(10分)每次铅球项目测试,小明同学的成绩总是不理想.他想影响铅球掷得远近的因素到底有哪些呢?为此,他以一支玩具手枪为实验器材进行了以下探究:(1)熟悉手枪结构:玩具手枪的内部结构中有一根弹簧,弹簧压缩的长度可调节.压缩的弹簧伸长时,将子弹射出,弹簧的能转化成子弹的动能.(2)探究过程:①提出假设:在相同条件下,子弹的射程可能和枪管与水平面的夹角有关.②设计实验,记录数据:他把手枪固定在某一高度后,保持子弹从枪口射出时的速度相同.改变枪管与水平面夹角,用同一颗子弹做了五次试验,记录数据如下:枪管与水平面夹角θ15°30°45°60°75°7.5 10.1 10.9 9.2 5.3子弹落点到枪口水平距离S∕m③分析数据,得出结论:在相同条件下,子弹的射程跟枪管与水平面的夹角有关,夹角在度左右时,子弹射程最远.小明由此推想:相同条件下,铅球以这一角度掷出,掷得最远.④交流和评价:第二天,小明与同桌交流探究成果,同桌认为小明对子弹射程与水平夹角θ的探究还可进一步完善.同桌的话启发小明对实验方案进行改进,获得了更准确的结论.小明所作的改进是;(3)完成上述探究后,小明想到影响子弹射程的因素可能还有许多,又提出一个合理的假设.你认为他的假设是:①.②.小明开始了新的探究…31.(14分)(1)做“研究杠杆平衡的条件”实验时,实验前,首先把杠杆的中点支在支架上,调节平衡螺母,使杠杆在水平位置平衡,这样做的好处.若发现杠杆右端下倾,应将左边的平衡螺母向移动或将右边的平衡螺母向移动;如图1所示的杠杆已经平衡,某同学得出的实验结论是“动力+动力臂=助力+助力臂”,你认为他的实验过程存在什么问题?.(2)如图1所示实验装置中,杠杆恰好平衡.图中钩码质量都相等,那么下列情况中能使杠杆保持平衡的是A、各减少一只钩码B、各向内移动一格.C、各减少一半数量的钩码D、各向外移动一格(3)在右图中,挂在B点的每只砝码质量均为50克.当弹簧秤在A点沿竖直向上的a方向拉时,杠杆平衡.这时弹簧秤的示数Fa=牛(g取10牛/千克).若弹簧秤沿斜向上的b方向拉时杠杆仍然平衡,则弹簧秤的示数Fb Fa.32.(12分)某化学实验小组欲探究盐酸、氢氧化钙的化学性质,取8支试管分别用A﹣H编号后,做如下实验.(1)实验中观察到有气泡出现的试管是,有沉淀生成的试管是.(2)写出实验中无明显现象产生的试管中发生的化学方程式.(3)实验后某试管中为红色溶液,当向其中加入过量的后,溶液变为蓝色.由此推断,该试管中最初盛有的物质是.(4)实验后某试管的底部有白色固体,过滤后向滤液中滴加盐酸,一段时间后有气泡冒出,则该滤液中的溶质是.四、分析计算题(本大题共28分)33.(4分)某老人在进行1分钟跳绳锻炼,若他的质量是60千克.若脚每次离地面高度都是5厘米,1分钟内共跳了120次.(1)这老人共克服自身重力做了多少功?(2)若这些能量全部由他体内的糖类来提供,则需消耗糖类多少克?(g取10牛/千克,糖类的热量价为16.8千焦/克)34.(4分)(1)在杠杆上的A点挂一重物,在C点对杠杆施加一个最小的力,使杠杆平衡在图中所示的位置.试画出这个力的示意图和力臂.(2)如图所示,轻质杠杆OA可绕O点转动,OA=0.3米,OB=0.2米,A点处挂一个质量为2千克的物体G,B点处加一个竖直向上的力F,杠杆在水平位置平衡.①图中所示轻质杠杆OA是杠杆(填省力、费力或等臂)②求竖直向上的力F的大小.35.(5分)如图所示为一座抽水蓄能水电站的示意图.我国已兴建了好几座抽水蓄能水电站,这对于调节电力的供应起到了很好作用.深夜时,用过剩的电能通过抽水机D把下蓄水池的水抽到高处的上蓄水池.白天则通过闸T放水带动发动机M电,并向外提供电能.若上蓄水池长为150m,宽为30m,从深夜11时到清晨4时抽水,使上蓄水池水面升高20m,设抽水过程中水上升的高度始终保持400m,不计抽水过程中其他能量损耗,试求:(1)抽上去水的质量(2)抽水机的功率.(g取10N/kg)36.(7分)在一烧杯中盛有100g BaCl2和HCl的混合溶液,向其中逐渐滴加溶质质量分数为10%的Na2CO3溶液,混合溶液的质量与所滴入的Na2CO3溶液的质量关系图象如图所示.(1)在实验过程中,有气体放出,还可以看到的明显实验现象是.(2)原溶液中HCl的质量分数为.(3)当滴入Na2CO3溶液至图中B点时,通过计算求所得不饱和溶液中溶质质量分数为多少?(计算结果精确到0.1%)37.(4分)现有一条5g表面已经部分氧化(变成MgO)的镁带,跟一定量的稀盐酸恰好完全反应,生成氢气0.4g,求镁带在变质前的质量.参考答案1~5 BCBDC 6~10 CBABC11~15 CCCCB 16~20 CBCDC21.Ca(OH)2 CaO CaCO3 H2CO3 HCl NaHCO322.(1)中和胃酸;Al(OH)3+3HCl═AlCl3+3H2O;(2)Na2CO3+2HCl═2NaCl+H2O+CO2↑.23.(1)Na;向下.(2)左低右高;温室.(3)除去管道中的空气,以防止点燃天然气与空气的混合物时发生爆炸.24.(1)红;(2)2NaOH+CO2═Na2CO3+H2O;(3)c;FeCl3+3NaOH═Fe(OH)3↓+3NaCl.25.(1)质量;(2)大.26.纸盒被推动的距离的远近;当高度相同时,物体质量越大重力势能越大.27.(1)A;膨胀;(2)水;减小.28.(1)O2;(2)B、D、E、F;(3)继续加稀盐酸,若无气泡产生,说明样品已完全反应;(4)气体从氢氧化钠溶液中带出一部分水蒸气.29.(1)H2SO4+2NaOH=Na2SO4+2H2O;(2)氢氧化钠;(3)溶液红色刚好褪去.30.(1)弹性势;(2)45,在45°附近多测几组数据;(3)子弹射程可能与子弹出口时的速度有关;可能与子弹的质量有关.31.(1)便于测量力臂;左;左;只从一次实验研究得出结论具有偶然性,不具有普遍性;(2)C;(3)0.4;小于.32.(1)BD;GH;(2)Ca(OH)2+2HCl═CaCl2+2H2O;(3)NaOH溶液;紫色石蕊溶液;(4)NaOH和Na2CO3.33.(1)这老人共克服自身重力做了3600J;(2)若这些能量全部由他体内的糖类来提供,则需消耗糖类0.21g.34.(1)图略;(2)①费力;②竖直向上的力F的大小为30N.35.(1)抽上去水的质量为9×107kg;(2)抽水机的功率为20000kW.36.(1)有白色沉淀生成;(2)7.3%;(3)所得不饱和溶液中溶质质量分数是8.1%.37.镁带在变质前的质量为4.92 g.。
浙江省杭州地区2017届九年级上学期10月月考语文试卷
杭州地区2017届九年级上学期10月月考语文试卷温馨提示:1. 本卷共四大题,25小题,满分150分。
2. 本卷答案全都做在答题纸上。
书写4分。
一、语文知识积累与运用(31分)1. 阅读下面一段话,根据拼音写出汉字。
(4分)生命的美丽,永远展现在它的进取之中;就像大树的美丽,永远展现在它负势向上高sǒng()入云的péng()勃生机中;就像雄鹰的美丽,永远展现在它搏风击雨如苍天之魂的áo()翔中;就像江河的美丽,永远展现在它波涛汹涌一xiè()千里的奔流中。
2. 下列句中排列顺序正确的一项是()(3分)①对经典最好的保护是发展,是创造,是让我们文化典藏的宝库越来越丰富。
②这样才能使我们文化和文学的参天大树更加根深叶茂,蓬勃生长。
③既自觉地守护民族文化的精髓,又关照时代,引领社会。
④仅仅有保护和传承终归是被动的,应该积极开拓创造,为人类贡献更多更好的作品。
⑤这就需要我们不为积习所蔽,不为时尚所惑。
A.①④⑤③②B.④⑤③①②C.①⑤④③②D.⑤③②①④3. 古诗文名句填空。
(8分)①更深月色半人家,②,背灼炎天光。
③,只有香如故。
④池上碧苔三四⑤《出师表》中表明作者志趣的句子是:,。
⑥《商山早行》诗中全由名词组成,蕴含六种景物,表现了早行之早的诗句是:,。
4. 解释下列句中加点的词语。
(6分)①辍.耕之垄上②藉.第令毋斩③以头抢.地耳④秦王色挠.⑤引喻失义.⑥以彰.其咎5. 下列加点词意思相同的一项是()(3分)A.陈胜、吴广皆次.当行又间令吴广之次.所旁从祠中B.今诚.以吾众诈自称公子扶苏此诚.危急存亡之秋也C.故临崩寄臣以.大事也以.君为长者D.若.为佣耕若.士必怒,伏尸二人6. 名著阅读。
(7分)(1)《培根随笔》中《谈美》是一篇论美的文章,作者主要阐述了的道理。
(2分)(2)《傅雷家书》是一部苦心孤诣的教子篇,下面的语句不是出自其中的一项是()(3分)A. 在饭桌上,两手不拿刀叉时,也要平放在桌面上,不能放在桌下,搁在自己腿上或膝盖上。
杭州市春蕾中学新初一分班数学试卷含答案
杭州市春蕾中学新初一分班数学试卷含答案一、选择题1.在比例尺是1∶10的图纸上,甲、乙两个圆的直径比是2∶3,那么甲、乙两个圆实际的直径比是()A.1∶10 B.4∶9 C.2∶3 D.无法确定2.李明的座位用数对表示是(4,5),张英的座位在李明的东偏南45°方向上,她的座位可能是()。
A.(3,4)B.(5,4)C.(5,6)D.(3,6)3.某人从甲地到乙地需要13小时,他走了15小时,还有100米没有走,他已经走了多少米?正确的算式是().A.100÷(13-15)B.100÷(1-13)×15C.100÷(13-15)×15D.100×(13-15)4.一个三角形铁丝框架的周长是12厘米,把它的三条边展开,下面()可能是这个三角形三条边的展开图。
A.B.C.5.某校图书馆买来文艺书和科技书共1500本,其中买来的文艺书本数比买来的科技书的2倍少36本,买来的科技书有多少本?如果设买来的科技书有x本,那么下列方程正确的是()。
A.x+2x=1500-36 B.2x-36=1500 C.x+2x=1500 D.x+2x-36=1500 6.下图中与5号相对的面是()号。
A.2 B.3 C.47.在下面的说法中,错误的是()。
①所有的偶数都是合数。
②圆柱的体积一定是圆锥体积的3倍。
③若平行四边形的面积一定,则它的底和高成反比例。
④今年比去年节约用水一成五,也就是今年用水比去年减少15%。
A.①②B.③④C.②④D.①②④8.下列说法中正确的是()。
A.差一定时,被减数和减数成正比例B.总价一定时,单价和数量成正比例C.圆柱体积一定时,它的底面积和高成反比例D.房间面积一定时,方砖的边长和所需的方砖数量成反比例9.从2019年12月1日起,海安主城区部分机动车道路实行停车收费,标准如图。
王叔叔在一类区域停车3.8小时,需要缴()元停车费。
浙教版2016-2017学年八年级上册10月月考数学试卷含答案
(1)当EF与斜边BC不相交时,请证明EF=BE+CF(如图1);
(2)如图2,当EF与斜边BC这样相交时,其他条件不变,证明:EF=BE-CF;
(3)如图3,当EF与斜边BC这样相交时,期10月月考八年级数学试卷
(考试时间:120分钟,满分100分)
一、选择题(每小题3分,共30分)
1.在下列长度的四根木棒中,能与4cm、9cm长的两根木棒钉成一个三角形的是( )
A.
4cm
B.
5cm
C.
9cm
D.
13cm
2.如图,小聪把一块含有60°角的直角三角板的两个顶点放在直尺的对边上,并测得∠1=25°,则∠2的度数是( )
①如图2,把一块三角尺XYZ放置在△ABC上,使三角尺的两条直角边XY、XZ恰好经过点B、C,若∠A=50°,则∠ABX+∠ACX= _________ °;
②如图3,DC平分∠ADB,EC平分∠AEB,若∠DAE=50°,∠DBE=130°,求∠DCE的度数;
7.如图,△ABC中,D为AB上一点,E为BC上一点,且AC=CD=BD=BE,∠A=50°,则∠CDE的度数为( )
A.50°B.51°C.51.5°D.52.5°
8.如图,AD是△ABC中∠BAC的角平分线,DE⊥AB于点E,S△ABC=7,DE=2,
AB=4,则AC长是()A.3B.4C.6D.5
14.用直尺和圆规作一个角等于已知角的示意图如图,则要说明 ,需要证明△ ≌△DOC,则这两个三角形全等的依据是________(写出全等的简写)
15.等腰三角形的周长是25cm,一腰上的中线将周长分成的两部分的差为5cm,则此三角形的底边长为______.
2016-2017学年浙江省杭州市富阳市、临平九年级(上)月考数学试卷(10月份)
2016-2017学年浙江省杭州市富阳市、临平九年级(上)月考数学试卷(10月份)一、选择题:本大题有10个小题,每小题3分,共30分.在每小题给出的四个选项中,只有一项最符合题目要求.1.(3分)下列函数中,是二次函数的是()A.y=2x B.y= C.y=D.y=x2﹣22.(3分)把二次函数y=x2﹣2x+3配方成y=(x﹣m)2+k的形式,以下结果正确的是()A.y=﹣(x﹣1)2+4 B.y=(x﹣1)2+2 C.y=(x+1)2+2 D.y=(x﹣2)2+33.(3分)若二次函数y=x2+mx的对称轴是x=3,则抛物线y=x2+mx与x轴的交点坐标为()A.(0,0) B.(0,6) C.(0,0)和(0,6)D.(0,0)和(6,0)4.(3分)已知二次函数y=ax2+4x+a﹣1的最小值为2,则a的值为()A.3 B.﹣1 C.4 D.4或﹣15.(3分)函数y=ax+1与y=ax2+bx+1(a≠0)的图象可能是()A.B.C. D.6.(3分)抛物线y=ax2+bx+c上部分点的横坐标x,纵坐标y的对应值如下表:从上表可知,下列说法中错误的是()A.抛物线与x轴的一个交点为(3,0)B.函数y=ax2+bx+c的最大值为6C.抛物线的对称轴是直线D.在对称轴左侧,y随x增大而增大7.(3分)向上发射一枚炮弹,经x秒后的高度为y公尺,且时间与高度关系为y=ax2+bx.若此炮弹在第7秒与第14秒时的高度相等,则在下列哪一个时间的高度是最高的()A.第8秒B.第10秒 C.第12秒 D.第15秒8.(3分)若抛物线y=(x﹣m)2+(m+1)的顶点在第一象限,则m的取值范围为()A.m>1 B.m>0 C.m>﹣1 D.﹣1<m<09.(3分)若实数m满足,则下列对m值的估计正确的是()A.﹣2<m<﹣1 B.﹣1<m<0 C.0<m<1 D.1<m<210.(3分)如图所示的二次函数图象上有3个点(﹣3,y1),(m,y2),(2,y3),若y1>y2>y3,则m可以取得的最大整数值为()A.﹣1 B.5 C.1 D.0二、填空题:本题有6个小题,每小题4分,共24分.11.(4分)抛物线y=4x2﹣11x﹣3与y轴的交点坐标是.12.(4分)把抛物线y=x2先向右平移2个单位,再向上平移3个单位,平移后抛物线的表达式是.13.(4分)已知抛物线与x轴交点的横坐标分别为3,l;与y轴交点的纵坐标为6,则二次函数的关系式是.14.(4分)为了改善小区环境,某小区决定要在一块一边靠墙(墙长25m)的空地上修建一个矩形绿化带ABCD,绿化带一边靠墙,另三边有总长为40m的栅栏围住,如图所示,若设绿化带的BC边长为xm,绿化带的面积为ym2,则y与y之间的函数表达式是,y取时,y取得最大值是.15.(4分)已知抛物线y=﹣2(x+m)2﹣3,当x≥1时,y随x的增大而减小,那么m的取值范围是.16.(4分)如图,抛物线y=﹣x2+bx+c与x轴交于A(1,0),B(﹣3,0)两点,与y轴相交于点C,请完成下面的填空:(1)该抛物线的解析式为.(2)在该抛物线的对称轴上存在点Q,使得△QAC的周长最小,则Q点的坐标为.(3)在抛物线上的第二象限上存在一点P,使△PBC的面积最大,则点P的坐标为,△PBC的最大面积为.三、解答题:本题有7小题,共66分.解答应写出文字说明、证明过程或演算步骤.17.(6分)已知函数y=(m﹣2)x+2x﹣1是一个二次函数,求该二次函数的解析式.18.(8分)已知y是关于x的二次函数,x与y的部分对应值如下表所示:(1)求y关于x的二次函数解析式;(2)求m的值.19.(8分)已知二次函数y=﹣(x+1)2+4的图象如图所示,请在同一坐标系中画出二次函数y=﹣(x﹣2)2+7的图象.20.(10分)二次函数y=ax2+bx+c(a≠0)的图象如图所示,根据图象解答下列问题:(1)写出方程ax2+bx+c=0的两个根;(2)写出不等式ax2+bx+c>0的解集;(3)若方程ax2+bx+c=k有两个不相等的实数根,求k的取值范围.21.(10分)已知抛物线y=x2﹣5x+4与x轴交于点A,B,与y轴交于点C,顶点为点P.(1)求△ABP的面积;=8S△ABP?若存在,请求出点Q的坐标;(2)在该抛物线上是否存在点Q,使S△ABQ若不存在,请说明理由.22.(12分)上午7:00,一列火车在A城的正北240km处,以120km/h的速度驶向A城.同时,一辆汽车在A城的正东120km处,以120km/h的速度驶向正西方向行驶.假设火车和汽车的行驶的方向和速度都保持不变,问:何时火车与汽车之间的距离最近?最近距离是多少千米?当火车与汽车之间的距离最近时,汽车是否已过铁路与公路的立交处?23.(12分)在平面直角坐标系中,点O为原点,平行于x轴的直线与抛物线L:y=ax2相交于A,B两点(点B在第一象限),点D在AB的延长线上.(1)已知a=1,点B的纵坐标为2.①如图1,向右平移抛物线L使该抛物线过点B,与AB的延长线交于点C,求AC的长.②如图2,若BD=AB,过点B,D的抛物线L2,其顶点M在x轴上,求该抛物线的函数表达式.(2)如图3,若BD=AB,过O,B,D三点的抛物线L3,顶点为P,对应函数的二次项系数为a3,过点P作PE∥x轴,交抛物线L于E,F两点,求的值,并直接写出的值.2016-2017学年浙江省杭州市富阳市、临平九年级(上)月考数学试卷(10月份)参考答案与试题解析一、选择题:本大题有10个小题,每小题3分,共30分.在每小题给出的四个选项中,只有一项最符合题目要求.1.(3分)(2016秋•富阳市月考)下列函数中,是二次函数的是()A.y=2x B.y= C.y=D.y=x2﹣2【解答】解:A、是一次函数,故A不符合题意;B、不是整式的形式,故B不符合题意;C、不是整式的形式,故C不符合题意;D、符合二次函数的形式,故D符合题意;故选:D.2.(3分)(2016秋•富阳市月考)把二次函数y=x2﹣2x+3配方成y=(x﹣m)2+k 的形式,以下结果正确的是()A.y=﹣(x﹣1)2+4 B.y=(x﹣1)2+2 C.y=(x+1)2+2 D.y=(x﹣2)2+3【解答】解:y=x2﹣2x+3=x2﹣2x+1﹣1+3=(x﹣1)2+2,故答案为:B.3.(3分)(2016秋•富阳市月考)若二次函数y=x2+mx的对称轴是x=3,则抛物线y=x2+mx与x轴的交点坐标为()A.(0,0) B.(0,6) C.(0,0)和(0,6)D.(0,0)和(6,0)【解答】解:∵二次函数y=x2+mx的对称轴是x=3,∴x=﹣=3,∴m=﹣6,∴y=x2﹣6x,令y=0,则x2﹣6x=0,解得:x=0或6,∴抛物线y=x2+mx与x轴的交点坐标为(0,0)和(6,0),故选D.4.(3分)(2015春•东台市月考)已知二次函数y=ax2+4x+a﹣1的最小值为2,则a的值为()A.3 B.﹣1 C.4 D.4或﹣1【解答】解:∵二次函数y=ax2+4x+a﹣1有最小值2,∴a>0,y最小值===2,整理,得a2﹣3a﹣4=0,解得a=﹣1或4,∵a>0,∴a=4.故选C.5.(3分)(2009•荆门)函数y=ax+1与y=ax2+bx+1(a≠0)的图象可能是()A.B.C. D.【解答】解:当a>0时,函数y=ax2+bx+1(a≠0)的图象开口向上,函数y=ax+1的图象应在一、二、三象限,故可排除D;当a<0时,函数y=ax2+bx+1(a≠0)的图象开口向下,函数y=ax+1的图象应在一二四象限,故可排除B;当a=0时,两个函数的值都为1,故两函数图象应相交于(0,1),可排除A.正确的只有C.故选C.6.(3分)(2014•仪征市二模)抛物线y=ax2+bx+c上部分点的横坐标x,纵坐标y的对应值如下表:从上表可知,下列说法中错误的是()A.抛物线与x轴的一个交点为(3,0)B.函数y=ax2+bx+c的最大值为6C.抛物线的对称轴是直线D.在对称轴左侧,y随x增大而增大【解答】解:根据表格数据知道:抛物线的开口方向向下,∵x=0,x=1的函数值相等,∴对称轴为x=,∴抛物线与x轴的另一个交点坐标为:(3,0),在对称轴左侧,y随x增大而增大,最大值大于6.故错误的说法为B.故选B.7.(3分)(2009•台湾)向上发射一枚炮弹,经x秒后的高度为y公尺,且时间与高度关系为y=ax2+bx.若此炮弹在第7秒与第14秒时的高度相等,则在下列哪一个时间的高度是最高的()A.第8秒B.第10秒 C.第12秒 D.第15秒【解答】解:当x=7时,y=49a+7b;当x=14时,y=196a+14b.根据题意得49a+7b=196a+14b,∴b=﹣21a根据二次函数的对称性及抛物线的开口向下,当x=﹣=10.5时,y最大即高度最高.因为10最接近10.5,故选B.8.(3分)(2015•益阳)若抛物线y=(x﹣m)2+(m+1)的顶点在第一象限,则m的取值范围为()A.m>1 B.m>0 C.m>﹣1 D.﹣1<m<0【解答】解:由y=(x﹣m)2+(m+1)=x2﹣2mx+(m2+m+1),根据题意,,解不等式(1),得m>0,解不等式(2),得m>﹣1;所以不等式组的解集为m>0.故选B.9.(3分)(2016•萧山区校级四模)若实数m满足,则下列对m 值的估计正确的是()A.﹣2<m<﹣1 B.﹣1<m<0 C.0<m<1 D.1<m<2【解答】解:∵m2+2(1+)=0,∴m2+2+=0,∴m2+2=﹣,∴方程的解可以看作是函数y=m2+2与函数y=﹣的交点的横坐标,作函数图象如图,在第二象限,函数y=m2+2的y值随m的增大而减小,函数y=﹣的y值随m的增大而增大,当m=﹣2时y=m2+2=4+2=6,y=﹣=﹣=2,∵6>2,∴交点横坐标大于﹣2,当m=﹣1时,y=m2+2=1+2=3,y=﹣=﹣=4,∵3<4,∴交点横坐标小于﹣1,∴﹣2<m<﹣1.故选A.10.(3分)(2016秋•富阳市月考)如图所示的二次函数图象上有3个点(﹣3,y1),(m,y2),(2,y3),若y1>y2>y3,则m可以取得的最大整数值为()A.﹣1 B.5 C.1 D.0【解答】解:由图象可知,抛物线的对称轴是x=,∴x=﹣3时的函数值等于x=6时的函数值,x=2时的函数值等于x=1时的函数值,当x>时,y随x的增大而增大,∵y1>y2>y3,∴﹣3<m<1或2<m<6,∴m可以取得的最大整数值为5,故选:B.二、填空题:本题有6个小题,每小题4分,共24分.11.(4分)(2013•耒阳市校级一模)抛物线y=4x2﹣11x﹣3与y轴的交点坐标是(0,﹣3).【解答】解:因为当x=0时,y=﹣3,所以,抛物线y=4x2﹣11x﹣3与y轴的交点坐标是(0,﹣3).12.(4分)(2016•舟山)把抛物线y=x2先向右平移2个单位,再向上平移3个单位,平移后抛物线的表达式是y=(x﹣2)2+3.【解答】解:抛物线y=x2的顶点坐标为(0,0),点(0,0)向右平移2个单位,再向上平移3个单位所得对应点的坐标为(2,3),所以平移后抛物线的表达式为y=(x﹣2)2+3.故答案为y=(x﹣2)2+3.13.(4分)(2016秋•富阳市月考)已知抛物线与x轴交点的横坐标分别为3,l;与y轴交点的纵坐标为6,则二次函数的关系式是y=2x2﹣8x+6..【解答】解:设所求抛物线是y=ax2+bx+c,根据题意得,,解得,故所求函数解析式是y=2x2﹣8x+6.故答案是y=2x2﹣8x+6.14.(4分)(2016秋•富阳市月考)为了改善小区环境,某小区决定要在一块一边靠墙(墙长25m)的空地上修建一个矩形绿化带ABCD,绿化带一边靠墙,另三边有总长为40m的栅栏围住,如图所示,若设绿化带的BC边长为xm,绿化带的面积为ym2,则y与y之间的函数表达式是y=+20x,y取20时,y取得最大值是200.【解答】解:由题意可得,y=x=+20x,∵y=+20x=,∴当x=20时,y取得最大值,此时y=200,故答案为:y=+20x,20,200.15.(4分)(2016秋•富阳市月考)已知抛物线y=﹣2(x+m)2﹣3,当x≥1时,y随x的增大而减小,那么m的取值范围是m≥﹣1.【解答】解:∵y=﹣2(x+m)2﹣3,∴对称轴为x=﹣m,∵a=﹣2<0,∴抛物线开口向下,∴在对称轴右侧y随x的增大而增大,∵当x≥1时,y随x的增大而减小,∴﹣m≤1,解得m≥﹣1,故答案为:m≥﹣1.16.(4分)(2016秋•富阳市月考)如图,抛物线y=﹣x2+bx+c与x轴交于A(1,0),B(﹣3,0)两点,与y轴相交于点C,请完成下面的填空:(1)该抛物线的解析式为y=﹣x2﹣2x+3.(2)在该抛物线的对称轴上存在点Q,使得△QAC的周长最小,则Q点的坐标为(﹣1,2).(3)在抛物线上的第二象限上存在一点P,使△PBC的面积最大,则点P的坐标为(﹣,),△PBC的最大面积为.【解答】解:(1)∵抛物线y=﹣x2+bx+c与x轴交于A(1,0),B(﹣3,0)两点,∴,解得,∴抛物线的解析式为y=﹣x2﹣2x+3.故答案为y=﹣x2﹣2x+3.(2)如图1中,连接BC交对称轴于Q,此时AQ+QC最小,即△QAC的周长最小,设最小BC的解析式为y=kx+b,则有,解得,∴直线BC的解析式为y=x+3,∵抛物线的对称轴x=﹣1,∴Q(﹣1,2).故答案为(﹣1,2).(3)如图2中,设P(m,﹣m2﹣2m+3),作PM∥轴,交BC于M.则M(m,m+3).S△PBC=•PM•3=(﹣m2﹣2m+3﹣m﹣3)=﹣(m+)2+,∵﹣<0,∴当m=﹣时,△PBC的面积最大,最大值为,此时点P(﹣,).故答案为(﹣,),.三、解答题:本题有7小题,共66分.解答应写出文字说明、证明过程或演算步骤.17.(6分)(2016秋•富阳市月考)已知函数y=(m﹣2)x+2x﹣1是一个二次函数,求该二次函数的解析式.【解答】解:依题意得:m2+m﹣4=2且m﹣2≠0.即(m﹣2)(m+3)=0且m﹣2≠0,解得m=﹣3,则该二次函数的解析式为y=﹣5x2+2x﹣1.18.(8分)(2016秋•富阳市月考)已知y是关于x的二次函数,x与y的部分对应值如下表所示:(1)求y关于x的二次函数解析式;(2)求m的值.【解答】解:(1)设此二次函数解析式为y=ax2+bx+c,由题意列出方程组,解得a=1,b=﹣1,c=﹣2,所以二次函数解析式为y=x2﹣x﹣2.(2)将x=4代入解析式得m=10.19.(8分)(2016秋•富阳市月考)已知二次函数y=﹣(x+1)2+4的图象如图所示,请在同一坐标系中画出二次函数y=﹣(x﹣2)2+7的图象.【解答】解:答案如右图.20.(10分)(2016秋•富阳市月考)二次函数y=ax2+bx+c(a≠0)的图象如图所示,根据图象解答下列问题:(1)写出方程ax2+bx+c=0的两个根;(2)写出不等式ax2+bx+c>0的解集;(3)若方程ax2+bx+c=k有两个不相等的实数根,求k的取值范围.【解答】解:(1)∵函数图象与x轴的两个交点坐标为(1,0)(3,0),∴方程的两个根为x1=1,x2=3;(2)由图可知,不等式ax2+bx+c>0的解集为1<x<3;(3)∵二次函数的顶点坐标为(2,2),∴若方程ax2+bx+c=k有两个不相等的实数根,则k的取值范围为k<2.21.(10分)(2016秋•富阳市月考)已知抛物线y=x2﹣5x+4与x轴交于点A,B,与y轴交于点C,顶点为点P.(1)求△ABP的面积;=8S△ABP?若存在,请求出点Q的坐标;(2)在该抛物线上是否存在点Q,使S△ABQ若不存在,请说明理由.【解答】解:(1)∵抛物线y=x2﹣5x+4中,令y=0,则x2﹣5x+4=0,即(x﹣4)(x﹣1)=0,解得x=4,x=1;∴A(1,0),B(4,0);令x=0,得y=4,∴C(0,4).∵点P是抛物线的顶点,∴P(,﹣),∵AB=3,∴S=×3×=;△ABP(2)存在,理由如下:=8S△ABP,所以h△ABQ=8h△ABP=18.因为S△ABQ所以令y=18,则x2﹣5x+4=18,解得x1=7,x2=﹣2,所以Q1(7,18)Q2(﹣2,18).22.(12分)(2016秋•富阳市月考)上午7:00,一列火车在A城的正北240km 处,以120km/h的速度驶向A城.同时,一辆汽车在A城的正东120km处,以120km/h的速度驶向正西方向行驶.假设火车和汽车的行驶的方向和速度都保持不变,问:何时火车与汽车之间的距离最近?最近距离是多少千米?当火车与汽车之间的距离最近时,汽车是否已过铁路与公路的立交处?【解答】解:如图所示:解:设两车经过时间为t,两车之间的距离为y,两车的行驶方向如图所示,由题意得题意得,OA=240﹣120t,OB=120﹣120t,在Rt△AOB中,AB2=OA2+OB2=(240﹣120t)2+(120﹣120t)2=28800(t﹣)2+7200,当t=时,AB之间的距离最小,此时AB==60km,当t=h时,汽车运动的距离为120×=180km>120km,故已过铁路与公路的交叉口.答:当经过小时时汽车与火车的距离最近,此时汽车已过铁路与公路的交叉口.23.(12分)(2016•金华)在平面直角坐标系中,点O为原点,平行于x轴的直线与抛物线L:y=ax2相交于A,B两点(点B在第一象限),点D在AB的延长线上.(1)已知a=1,点B的纵坐标为2.①如图1,向右平移抛物线L使该抛物线过点B,与AB的延长线交于点C,求AC的长.②如图2,若BD=AB,过点B,D的抛物线L2,其顶点M在x轴上,求该抛物线的函数表达式.(2)如图3,若BD=AB,过O,B,D三点的抛物线L3,顶点为P,对应函数的二次项系数为a3,过点P作PE∥x轴,交抛物线L于E,F两点,求的值,并直接写出的值.【解答】解:(1)①二次函数y=x2,当y=2时,2=x2,解得x1=,x2=﹣,∴AB=2.∵平移得到的抛物线L1经过点B,∴BC=AB=2,∴AC=4.②作抛物线L2的对称轴与AD相交于点N,如图2,根据抛物线的轴对称性,得BN=DB=,∴OM=.设抛物线L2的函数表达式为y=a(x﹣)2,由①得,B点的坐标为(,2),∴2=a(﹣)2,解得a=4.抛物线L2的函数表达式为y=4(x﹣)2;(2)如图3,抛物线L3与x轴交于点G,其对称轴与x轴交于点Q,过点B作BK⊥x轴于点K,设OK=t,则AB=BD=2t,点B的坐标为(t,at2),根据抛物线的轴对称性,得OQ=2t,OG=2OQ=4t.设抛物线L3的函数表达式为y=a3x(x﹣4t),∵该抛物线过点B(t,at2),∴at2=a3t(t﹣4t),∵t≠0,∴=﹣,由题意得,点P的坐标为(2t,﹣4a3t2),则﹣4a3t2=ax2,解得,x1=﹣t,x2=t,EF=t,∴=.参与本试卷答题和审题的老师有:2300680618;tcm123;wd1899;HJJ;zhangCF;lf2﹣9;Liuzhx;lanyan;zxw;守拙;星期八;知足长乐;蓝月梦;gsls;王岑;zgm666;sjzx;弯弯的小河;HLing;张其铎(排名不分先后)hu2017年3月11日。
浙江省杭州地区2016-2017学年八年级上学期10月月考语文试卷
杭州地区2016-2017学年八年级上学期10月月考语文试卷温馨提示:全卷共4大题,21小题。
满分为100分,检测时间为110分钟。
一、语文知识积累与运用。
(22分)1. 读下面两句话,根据拼音写出相应的汉字(4分)(1)方场的一边,离其他的房屋几步的地方,高高地sǒng( ▲ )立着一堆瓦lì( ▲ ),它的本来面目简直一点也看不出来了。
(2)这是某种令人惊hài ( ▲ )而不知名的杰作,在不可名状的晨曦中依稀可见,宛如在欧洲文明的地平线上piē( ▲ )见的亚洲文明的剪影。
2. 下面句子中加点词语使用不恰当的一项是(▲)(2分)A.抗日战争中为国家利益献身的烈士们永垂不朽....,他们永远活在人们的心中。
B.如果台湾当权者胆敢铤而走险....,制造台独重大事变,中国人民将不惜一切代价,坚决地粉碎台独分裂图谋。
C.面对旱情,全县人民团结一心,众志成城,形成了锐不可当....的抗旱合力。
D.当企业和群众不需要或不希望我们出现时,要做到立刻离开,消失得荡然无存....。
3. 古诗文名句默写填空。
(6分)(1)过尽千帆皆不是,。
(2),燕然未勒归无计。
(3)出淤泥而不染,。
(4),日高人渴漫思茶。
(5)近两年,我省大力实施“五水共治”,生态环境得以明显改善,请你用李白《送友人》中的两句诗来展现当下我省生态环境的美好景象:▲,▲。
4.解释下列句子中加点的字词。
(6分)(1)欲穷.其林 ( ▲ ) (2)便扶向.路(▲) (3)后遂无问津.者(▲)(4)惟吾德馨.(▲) (5)濯清涟而不妖.(▲) (6)适.与野情惬(▲)5.名著阅读(4分)(1)鲁迅在《琐记》中写自己一有空闲,就照例地吃侉饼,花生米,辣椒,阅读《▲》,表现出鲁迅探求真理的强烈欲望(1分)(2)《范爱农》中作者在东京与范爱农发生冲突是因什么事?▲(简要叙述)。
(1分)(3)《钢铁是怎样炼成的》的故事情节,按时间先后顺序排列正确的一项是(▲)(2分)①保尔参加铁路筑建工作。
2016届杭州市五校联盟高三年级10月月考英语试卷及答案
2015-2016学年杭州市五校联盟高三年级10月月考试卷英语试题第I卷(选择题)一、单项选择1.My brother is really ______. He often works in his office far into the night.A. open-mindedB. hard- workingC. self-confidentD. warm-hearted2.I tried to appear at ________ ease when the foreign guest greeted me by kissing me on _______ cheek. A. / ; a B. /; the C. the ; a D. the ; the3.It’s said that the headmaster didn’t agree with the plan , ________ ?A . isn’t itB . didn’t heC . is itD . did it4.Everything was placed exactly ________you wanted it for the ceremony .A . whileB . whenC . whereD . though5.I have never been to Stratford, though I probably _______.A. must haveB. need haveC. can haveD.should have6.The problem of high living expenses we face today isquite similar to _______ troubling the Americans in the1930s.A. oneB. itC. thisD. that7.We shouldn’t complain about being poor, because many families are much _______ after the big earthquake.A. better offB. badly offC. welloff D. worse off8.I’ve been trying to ring her up all the morning butI couldn’t _______.A. get throughB. go throughC. get overD. go over9.The No. 1 searched term for 2013 was Nelson Mandela,the former president of South Africa, _______ death caused a worldwide celebration of his life’s achievements.A. who’sB. whichC. of whomD. whose10.It’s raining cats and dogs . I’m so surprised thatyou ________stand outside !A . mightB . mayC . shallD . should11.One’s life has value ________one brings value to the life of others .A . so thatB . no matter howC . as long asD . except that12.ThePeonyPavilion, a play written by Tang Xianzu, is ______many people regard as the most romantic story in Chinese literature.A. thatB. whatC. whyD. whether13.It was really ______of you not to play the guitar while I was preparing my lessons.A. modestB. outspokenC. considerateD. determined14.Only when he reached the tea-house _______it was the same place he’d been in last year.A. did he realizeB. he did realizeC. he realizedD. had he realized15.E-shopping, when properly ________, can save us a lot of time and money.A. doingB. to doC. having doneD. done16.We’ve got no coffee. Let’s have tea _______.A. eitherB. howeverC. yetD.instead17.You may feel it _______ that such a little girl can speak three foreign languages fluently in this small town.A. surprisingB. surprisedC. to surpriseD. being surprised18.Be careful when you cross this very busy street. If not, you may run over by a car.A. haveB. getC. becomeD. turn19.You are too dirty. Don’t get _________ to me.A. closeB. closingC. closedD. closely20.Sorry, I can’t return the book today. Actually, I _______ half of it.A. have coveredB. am coveringC. was coveringD. covered二、完型填空I remember my first day here very clearly. My friend was waiting for me when my plane __21__ at Kennedy Airport at 3 o'clock in the afternoon. The weather was very __22_ and it was snowing. But I was too excited to __23__. From the airport my friend and I took a taxito my __24__. On the way I saw the skyline of Manhattan __25_ the first time, and I stared in astonishment at the famous skyscrapers and neon lights (霓虹灯光) made them __26__. My friend helped __27__ at the hotel and then left me because he had to go back to work. He _28__ to return the next day.__29_ my friend had left I went to a __30__ near the hotel to get something to eat. Because I couldn't speak a word of English,I couldn't tell the __31__ what I wanted. I was very upset and started to make some __32__. But the waiter didn't understand me. Finally I ordered the __33__ thing the man at the next table was eating. After dinner I started to __34__ along Broadway __35__ I came to Time Square, with its movie theatres, neon lights, and huge crowds of people. I did not feel __36__ so I continued to walk around the city. I wanted to see __37_ on my first day. I knew it was impossible but I wanted to try.When I __38__ to the hotel, I was exhausted. But I couldn't sleep. I lay __39__ and thought about New York. It was a very big and interesting city with many tall buildings and big cars, and full of noise and busypeople. I also decided right then that I had to learn to __40__.21.A. took off B.landed C.dropped D.reached 22.A. hot B.warm C.cold D.cool 23.A. look B.listen C.enjoy D.mind 24.A. home B.hotel C.office D.school 25.A. for B.at C.as D.on26.A. high B.beautiful C.strong D.ugly 27.A. load B.download C.unpack D.pack 28.A. promised B.permitted C.advised D.admitted 29.A. Long before B.Shortly after C.By the time D.Before long30.A. restaurant B.store C.supermarket D.theater 31.A. boss B.cook C.waiter D.manager 32.A. noises B.suggestions C.sounds D.gestures 33.A. familiar B.different C.same D.right 34.A. walk B.drive C.ride D.run35.A. before B.until C.when D.as36.A. excited B.amazed C.tired D.moved 37.A. anything B.something C.nothing D.everything 38.A. returned B.turned C.walked D.marched 39.A. asleep B.awake C.afraid D.amused40.A. drive cars B.plan trips C.speak English D.order meals三、阅读理解第一节ARiding School:You can start horse-riding at any age. Choose private or group lessons any weekday between 9 a. m. and 8:30 p.m. (3:30 p.m. on Saturdays). There are 10 kilometers of tracks and paths for freely rides across farmland and open country. You will need a riding hat.Opening Hours: Monday through Friday: 9:00 a.m.—8:30 p.m.Phone: (412) 396—6754 Fax: (412)396—6752Sailing Club:Our Young Sailor’s Course leads to the Stage 1 Sailing qualification. You’ll learn how to sail safely and the course also covers sailing theory and first aid. Have fun with other course member, afterwards in the clubroom. There are 10 weekly two-hour lessons (Tuesday 6:00 p.m.—8:00p.m)Opening Hours: Tuesdays: 6:00 p.m. —8:00 p.m.Phone: (412)396—6644 Fax: (412)396—6644Diving Center:Our experienced instructors offer one-month courses in deep-sea diving for beginners. There are two evening lessons a week, in which you learn to breathe underwater and use the equipment safely. You only need a swimming costume and towel. Reduced rates for couples.Opening Hours: Monday and Friday: 6:30p.m-8:30p.m.Phone: (412) 396—6312 Fax: (412) 396—6706Medical Center:The staff of the Medical Center aim to provide convenient and necessary medical care to students and staff of the university. The center is well equipped and the staff here are trained to deal with a broad range of medical problems. Doctors as well as nursing staff are available for consultation. Also, all kinds of medicines are sold here and are cheaper for students than other drugstores.Opening Hours: 24 hours from Monday to SundayPhone:(412) 396—6649 Fax:(412) 396—6648Watersports Club:We use a two-kilometer length of river for speedboat racing and water-skiing. A beginners’ course is made up of ten 20-minute lessons. You will learn to handle boats safely and confidently, but must be able to swim. The club is in a convenient central position and is open daily from 9 a. m to 4 p.m, with lessons all through the day.Opening Hours: Monday through Friday: 9:00 a.m.—4:00 p.m.Phone: (412)39606899 Fax: (412) 396-689041. If you want to swim and enjoy activities which are fast and a bit dangerous, you should join _____.A. Diving CenterB. Watersports ClubC. Riding SchoolD. Sailing Club42. If you want to experience a new activity in the countryside in the mornings, you may fax _____. A. (412) 396-6706 B. (412) 396-6648 C. (412) 396-6876 D.(412) 396-675243. Which is NOT offered by the Medical Center?A. Well trained staff members.B. Good equipment.C. Nursery for newly-born babies.D. Various less expensive medicines.BBats are impressive creatures. They are known to carry dangerous diseases like SARS without getting sick.So researchers wanted to know: How do bats fight off so many deadly diseases? Learning their secret could help doctors better treat humans who have these diseases, therefore saving millions of lives.To solve this problem, a team of researchers from Australia and China analyzed bat DNA. The scientists studied two kinds of bats—the Australian megabat, known as the flying fox, and the Chinese microbat. The scientists then arranged the bat genome (基因组) in order by comparing their DNA.The researchers now think that the special immunity (免疫性) to illness that bats have may be connected to their ability to fly.Bats are the only mammals (哺乳动物) that can truly fly. Flying uses up a lot of energy. The energy burned for flying produces something in the animal called freeradicals (自由基). Free radicals can damage DNA and lead to diseases such as cancer.However, bats are not affected by free radicals produced during flight. The reason is that bats carry special genes to repair any damaged DNA.Scientists think that because bats fly and produce free radicals, they’ve evolved to carry genes that shaped their special immune system.“We’re thinking that the evolution of flight led to a sort of effect, influencing not only the immune system but also things like aging and cancer,” says Chris Cowled, of the Australian Animal Health Laboratory. “We think we’ve really found something special.”Researchers believe that this discovery might one day be key to helping humans fight diseases such as cancer that attack the immune system and damage DNA.44. What’s true about bats according to the passage?A. They carry many deadly diseases like SARS so it’s easy for them to get sick.B. Bats are the only animals that can tell directions easily.C. Bats are among the mammals that can truly fly.D. Researchers studied bats to help save people.45. According to researchers, bats can fight off many deadly diseases mainly because ________.A. they have developed special immune system through evolutionB. they are able to fly, which burns a lot of energyC. free radicals in their bodies can damage DNA and cause diseasesD. they carry no special genes to repair damaged DNA46. The passage is mainly about ________.A. bats and dangerous diseasesB. bats and their special immune systemC. free radicals and immune systemD. ways to cure cancerCIt is a novel that is probably more talked about than read. People think: “It’s such a big book! It has such a serious theme!” The feeling that t hey are going to be taught a long, hard lesson often puts readers off. But really, War and Peace (1869), which tells the stories of five upper-class families in Russia at thetime of the 1812 French invasion, is not to be missed. Reading this novel is one of those once-in-a-lifetime experiences, like climbing the Great Wall: You will regret it if you do not try.Earlier this month, USA Today reported that a six-episode (集) War and Peace miniseries (连续短剧) produced by the BBC would air next year.With a complex plot and so many characters, readers unfamiliar with the work might be most interested in the characters from the financially-troubled Rostov family of Moscow. Count Rostov has four teenage children. Natasha is in love with Boris Drubetskoy, who is about to become an army officer. Nikolai Ilyich loves the poor Sonya, a ward (女仆) of the family, but his family is not happy with their relationship. The proud Vera is about to start a happy marriage with a German-Russian officer. The youngest Rostov is the 9-year-old Petya, who, like his brother Nikolai, has his heart set on fighting for his country.The lives of all are about to be changed by the upcoming great war that involves many other major characters of War and Peace, such as Prince Andrei, whogoes into a military career partly in order to get away from his unhappy marriage to the socialite (社会名流) Lise.The novel has a great reputation among many kinds of writers and millions of readers. US writer Ernest Hemingway wrote: “I don’t know anybody who could write about war better than Tolstoy did.” A comment by the great 20th-century Russian short-story writer Isaak Babel shows the rich sense of history that Tolstoy’s work conveys. “If the world itself could write, it would write like Tolstoy,” Babel commented.47. Why do people prefer to talk about the novel rather than read it?A. The story is directly related to their daily life.B. The story is too long and has too serious a theme.C. They often get confused with the complex relationship.D. They can understand the story through shared ideas.48. What is the author’s purpose in writing the passage?A. To tell readers different opinions on the book.B. To make it easier for readers to read the book.C. To sing high praise for the great writer Tolstoy.D. To advise readers not to miss such a good book.49. What can we know from Isaak Babel’s comment?A. The novel has a great distinction in the world.B. The book helps readers make sense of history.C. Many other writers regard Tolstoy as their idol.D. Readers should follow Tolstoy’s writing style.DA microscope is a useful instrument for observing small objects. By producing a bigger image, the microscope reveals details that are undetectable to the naked eye(裸眼).Before using the microscope, please read the instructions below.CAUTION: Microscopes are both delicate and expensive and must be handled with care.1. Always carry the microscope with two hands — one supporting the base and the other on the arm.2. Avoid stretching the wire of the lamp across a walkway.3. Keep the stage clean and always use a glass slide for specimens(样本).4. To avoid crushing the glass slide when focusing, begin with the lens close to the specimen and gradually back off to focus.5. Keep the microscope covered to prevent the dust while it is being stored.HOW TO USE THE MICROSCOPE:1. Plug(接通电源) in the lamp.2. Place a sample of what you wish to observe on a slide.3. Adjust the mirror so it reflects light from the room up into the objective lens. When the mirror is correctly adjusted, a complete circle of light will appear when you look through the eyepiece.4. Place your slide with the specimen directly over the center of the glass circle on the stage. If it is a wet slide, be sure the bottom of the slide is dry.5. With the LOW POWER objective lens placed over theslide, use the coarse focus knob to lower the lens to the lowest point.6. Look through the eyepiece with one eye while closing the other eye. Slowly raise the lens until the focus is relatively clear.7. Use the fine focus knob to fine -tune(微调)the focus.8. Without changing the focus knobs, switch to the HIGH POWER objective lens. Once you have switched to HIGH POWER, use only the fine focus knob to make the image sharper.50. Which of the following is the correct way to usea microscope according to the text?A. Use one hand to carry the microscopeB. Place a sample directly on the clean stageC. When stored, the microscope should be adjusted.D. Look through the eyepiece with one eye.51. If you want to observe a thin piece of hair, which of the following should you do first?A. Switch to objective lensB. Adjust the mirrorC. Look through the eyeD. Place the hair on a glass slide52. According to the text, you could see a completecircle of light _____.A. after correctly adjusting the mirrorB. while looking at the specimen on a glass slideC. after slowly raising the objective lensD. before positioning the mirror correctly第二节信息匹配美国长大的台湾人气歌手Wang Lee Hom在接受CNN Talk Asia栏目专访时,回答了主持人Lorraine Hahn提出的五个问题(第61—65题)。
2021-2022学年浙江省杭州市下城区春蕾中学九年级(上)月考物理试卷(10月份)(附详解)
2021-2022学年浙江省杭州市下城区春蕾中学九年级(上)月考物理试卷(10月份)一、单选题(本大题共8小题,共24.0分)1.在“电闪雷鸣”这一自然现象中,没有涉及到的能量形式()A. 电能B. 声能C. 电磁能D. 核能2.如图所示,木块沿斜面从顶端匀速下滑的过程中,木块的()A. 重力势能减小,动能增大B. 重力势能减小,动能不变C. 重力势能不变,动能不变D. 重力势能不变,动能减小3.关于功和能的关系,下列说法正确的是()A. 物体具有的能越多,它做的功越多B. 物体有了能就一定正在做功C. 做功的物体一定具有能D. 物体做功的多少与它具有的能无关4.如图,这款图钉来自于一个初中生的创意,翘起部分为我们预留下施力空间。
当拔起图钉时,将图钉看作杠杆,其支点为()A. A点B. B点C. C点D. D点5.如图甲所示,小球从某高度处静止下落到竖直放置的轻弹簧上并压缩弹簧。
从小球刚接触到弹簧到将弹簧压缩到最短的过程中,得到小球的速度v和弹簧被压缩的长度△l之间的关系,如图乙所示,其中b为曲线最高点。
不计空气阻力,弹簧在整个过程中始终发生弹性形变,就这一过程,下列说法正确的是()A. 小球受到的弹力逐渐减小B. 小球在b点时重力和弹力大小相等C. 在运动过程中小球的动能不断增大D. 在运动过程中小球的机械能保持不变6.小明在按压式订书机的N点施加压力,将订书机钉入M点下方的纸条中,能正确表示他使用该订书机时的杠杆示意图是()A.B.C.D.7.一物体受到5N竖直向上的拉力F作用,沿水平方向以0.2m/s的速度匀速运动了10s,拉力F对物体做的功为()A. 0JB. 1JC. 10JD. 50J8.甲、乙两台抽水机的功率分别为500W和800W,下列说法正确的是()A. 甲做功少B. 乙做功少C. 甲做功快D. 乙做功快二、填空题(本大题共2小题,共10.0分)9.小球竖直向上运动,并落回地面,这过程中先后经过M、S两点。
浙江省杭州市民办春蕾中学高二化学月考试卷含解析
浙江省杭州市民办春蕾中学高二化学月考试卷含解析一、单选题(本大题共15个小题,每小题4分。
在每小题给出的四个选项中,只有一项符合题目要求,共60分。
)1. 下列关于热化学反应的描述中正确的是A.HCl和NaOH反应的中和热ΔH=-57.3 kJ/mol,则H2SO4和Ca(OH)2反应的中和热ΔH=2×(-57.3) kJ/molB.CO(g)的燃烧热是283.0 kJ/mol,则2CO2(g) =2CO(g)+O2(g)反应的ΔH=+566.0 kJ/molC.需要加热才能发生的反应一定是吸热反应D.Ba(OH)2·8H2O与NH4Cl反应的焓变小于0,所以在常温下能自发进行参考答案:B略2. 下列叙述正确的是()A.固体氯化钠不导电,所以氯化钠不是电解质B.铜丝能导电,所以铜是电解质C.氯化氢水溶液能导电,所以氯化氢是电解质D.氨气溶于水能导电,所以氨气是电解质参考答案:.C3. 短周期Y元素的p轨道上有3个未成对电子,则该元素的最高价氧化物的水化物的化学式可能是()A.H3YO4B.H4YO4 C.HYO2D.H2YO4参考答案:A略4. 1965年我国科学家合成了结晶牛胰岛素,它是A.氨基酸 B.高级脂肪酸 C.人造纤维 D.蛋白质参考答案:D略5. 最近医学界通过放射性14C标记C60,发现一种C60的羧酸衍生物在特定条件下通过断裂DNA而杀死细胞,从而抑制艾滋病,则有关14C的叙述正确的是A.与12C的化学性质不相同 B.与12C的中子数相同C.是C60的同素异形体D.与12C互为同位素参考答案:D略6. 下列化合物中,既显酸性,又能发生酯化反应和消去反应的是()B.CH3CH=CHCOOH参考答案:C7. 在甲烧杯中放入盐酸,乙烧杯中放入醋酸,两种溶液的体积和pH都相等,向两烧杯中同时加入质量不等的锌粒,反应结束后得到等量的氢气。
下列说法不正确的是( ) A.甲烧杯中放入锌的质量比乙烧杯中放入锌的质量大B.乙烧杯中的酸过量C.两烧杯中参加反应的锌等量D.反应所需的时间:乙烧杯比甲烧杯长参考答案:D略8. 一定温度下,在固定容积、体积为2 L的密闭容器中充入1 mol N2和3 mol H2发生反应,当反应进行到10 s末时反应达到平衡,此时容器中c(NH3)=0.1mol·L-1。
浙江省杭州市西湖高级中学1617学年度高一10月月考——
浙江省杭州市西湖高级中学2016—2017学年度上学期10月月考高一地理试题一、选择题(共30题,每小题2分,共60分)1.太阳活动强弱的主要标志是A.耀斑B.日珥C.太阳风D.太阳黑子2. 2016年8月12日英仙座流星雨如期而至,它由斯威夫特·塔特尔彗星尾部留下的碎屑物质与地球大气摩擦形成。
读部分天体关系示意图,下列说法正确的是A.斯威夫特·塔特尔彗星属于英仙座B.彗星的彗尾方向就是太阳所在方向C.图中包含的天体系统的级数为2级D.彗星在运行过程中体积不断增大3.能正确标注右图中天体系统的名称的是A.①太阳系B.②银河系C.③总星系D.③地月系4.太阳系是我们的家园,月球围绕地球运转,我们的地球在离太阳很近的第三条轨道上运行,它处在一个得天独厚的位置上。
这里的“得天独厚的位置”主要是指A.行星际空间安全稳定B.太阳光照稳定C.日地距离适中D.地球自转周期适中5.生长在中高纬地区的一些乔木年轮的疏密变化有明显的约11年的周期性,下列因素与该现象密切相关的是A.太阳辐射B.黑子C.耀斑D.太阳风6.下列天体系统中,级别最低的是A.银河系B.地月系C.太阳系D.河外星系7.藏族姑娘的脸上呈紫红色,被称之为“高原红”,影响其形成的主要因素是A.光照B.热量C.水分D.气压8.月球和地球的表面环境迥然不同,其主要原因是二者的A.质量差异B.形态差异C.自转差异D.公转差异9.地球高纬度地区上空经常出现绚丽多彩的极光,与此相关的太阳活动是A.太阳风B.耀斑C.日珥D.黑子在《三体》(2015年获73届雨果奖)一书中,数次提到的柯伊伯带、奥尔特星云被天文家认定为太阳系的边缘,那里有万亿至十万亿颗彗星。
据此回答1-2题。
10.除彗星外,太阳系中还有各种各样的天体。
下列天体不.属于太阳系的是A.猎户星云B.北斗卫星C.木星D.月球夸父计划是中国的一个太阳监测卫星计划,又称为“空间风暴、极光和空间天气”探测计划,由于2012年将是一个太阳活动高峰年,2012年至2014年太阳活动将会很强烈,因此夸父计划三颗卫星建议在这个时间内发射。
杭州市高二上学期物理10月月考试卷D卷
杭州市高二上学期物理10月月考试卷D卷姓名:________ 班级:________ 成绩:________一、单选题 (共19题;共38分)1. (2分) (2016高二上·密云期中) 如图所示,取一对用绝缘柱支撑的导体A和B,使它们彼此接触,起初它们不带电,分别贴在导体A,B下部的金属箔均是闭合的.下列关于实验现象描述中正确的是()A . 把带正电荷的物体C移近导体A稳定后,只有A下部的金属箔张开B . 把带正电荷的物体C移近导体A稳定后,只有B下部的金属箔张开C . 把带正电荷的物体C移近导体A后,再把B向右移动稍许使其与A分开,稳定后A,B下部的金属箔都还是张开的D . 把带正电荷的物体C移近导体A后,再把B向右移动稍许使其与A分开,稳定后A,B下部的金属箔都闭合2. (2分)如图所示,台秤上放一个装有水的容器,有一个金属球挂在弹簧测力计下面,现将金属球浸没在水中,比较在金属球浸入水中前、后的情况()A . 弹簧测力计的示数减小,台秤的示数不变B . 弹簧测力计的示数不变,台秤的示数增加C . 弹簧测力计的示数减小,台秤的示数增大,且减少的示数等于增加的示数D . 弹簧测力计的示数增大,台秤的示数减小,且增加的示数等于减少的示数3. (2分)四个等量异种点电荷分别放置于正方形的顶点上,a 、b分别为所在边的中点,如图所示.一点电荷从图中a点沿直线移到b点的过程中,下列说法正确的是()A . 静电力对电荷做正功,电荷的电势能减小B . 静电力对电荷做负功,电荷的电势能增加C . 电荷所受的静电力先增加后减小D . 电荷所受的静电力先减小后增加4. (2分) (2017高二上·广州期中) 下列器件,利用电流的热效应工作的是()A . 验电器B . 电热水器C . 电容器D . 电感器5. (2分)图中虚线框内是一未知电路,测得它的两端点a、b之间电阻是R ,在a、b之间加上电压U ,测得流过电路的电流为I ,则未知电路的电功率一定是()A .B .C .D .6. (2分) (2017高二下·晋中期末) 如图所示,矩形线圈面积为S,匝数为N,线圈总电阻为r,在磁感应强度为B的匀强磁场中绕OO′轴以角速度ω匀速转动,外电路电阻为R,当线圈由图示位置转过90°的过程中,下列判断不正确的是()A . 电压表的读数为B . 通过电阻R的电荷量为q=C . 电阻R所产生的焦耳热为Q=D . 当线圈由图示位置转过30°时的电流为7. (2分) (2016高一上·绍兴期中) 关于磁感线的说法,下列正确的是()A . 磁感线从磁体N极出发,终止于S极B . 磁感线可表示磁场的强弱和方向C . 磁感线就是磁场中碎铁屑排列成的曲线D . 沿磁感线方向,磁场逐渐减弱8. (2分) (2019高二上·哈尔滨期末) 如图,一绝缘光滑固定斜面处于匀强磁场中,磁场的磁感应强度大小为B,方向垂直于斜面向上,通有电流I的金属细杆水平静止在斜面上。
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阅读理解1. What number may you call if you and your friends want to enjoy the sunshine at the seaside?A. 67538293B. 63986432C. 64639818D. 638756292. Sam wants to stay in Hunter Valley with his wife, his five-year-old daughter and his seven-year-old son. How much will it cost?A. $ 25B. $ 50C. $ 100D. $ 1503. David loves sports. He will take his holiday from May 7 to May 15. What activity will he probablytake part in?A. Hiking in the mountains.B. Fishing in the country.C. Watching plants at night.D. Swimming in the sea.4. Lucy is a college student.She is quite interested in science.She wants to know something about the life of plants at night.Which trip will she choose?A. Trip 1.B. Trip 2.C. Trip 3.D. Trip 4.5. Which of the following is NOT mentioned according to the four advertisements?A B C DADACCBThere are many kinds of heroes. Even animals can be heroes. This passage tells about three amazing animals. Each one is a hero!Thumper, the DogThumper was a dog that lived with a family which had a three-year-old son named Benjamin. One day Benjamin wandered(闲逛) into a large field. The grass in the field was taller than he was, so he could not find his way out. Hundreds of people began to search for Benjamin. When they found him, they saw Thumper stayed with Benjamin and kept him warm. So Benjamin had stayed safe.Lulu, the PigThe Altsmans had a pet pig named Lulu. One summer the couple went camping and took Lulu with them. The husband went fishing one morning. The wife didn’t feel well, so she and Lulu stayed in the camper. Suddenly Mrs. Altsman fell to the floor. Lulu pushed the camper door open and climbed out for help. When a car came by, she lay down in front of it. When the driver got out, Lulu led him back to the camper. The man called for help and Mrs. Altsman was taken to hospital.Sugar, the CatSugar was a beautiful cat. Three years ago she wandered onto the Woods’farm in California and Mrs. Woods began feeding her. Mrs. Woods noticed something wrong with the cat’s left leg, but this didn’t make Sugar any less special. Mrs. Woods loved Sugar. Later the couple moved to a new farm in Oklahoma. They gave Sugar to a neighbor who would take good care of her, becausethey knew she wouldn’t like riding in cars for days. However, Sugar walked across deserts and mountains and traveled more than 1,500 miles to the Woods’new farm! Mr. and Mrs. Woods could hardly believe their eyes. No one knows how Sugar found her way to Oklahoma.1:How did Thumper help Benjamin?A.By searching for him in the field.B.By finding the way out for him.C.By staying with him all the time.D.By cutting the grass around him.2:Why did Lulu lie down on the road?A.To get help. B.To watch the cars.C.To have a sleep. D.To ask for a lift.3:What did Sugar do in the story?A.She tried to find help.B.She protected her owners.C.She went camping with her owners.D.She went a long way to find her owners.CADCLake Victoria is the largest lake in Africa. It is also the second largest lake in the world. It is an important lake because it is one of the sources(源头) for the longest river in the world, the Nile River. Lake Victoria provides a source of water, food, and power(电力) for several African countries. Lake Victoria is a big part of African life.Unfortunately, Lake Victoria has a problem. It is shrinking . There are several power stations at Lake Victoria in Uganda. These are on the Nile River, and besides producing power, they keep the water of the lake at a certain level. For the past forty years, that level has been 11.9 meters. Over the last several years, the water level has dropped by about 2.5 meters. There seem to be several reasons for this drop.One possible reason is drought(干旱). Drought has been very bad in the area since 2000. Lake Victoria gets all of its water from rain, so the drought means less water in the lake.However, some environmentalists believe that the real problem is the power plants(工厂) on Lake Victoria. Uganda depends on those power plants for most of its power, and they made the power plants larger in 2000. Many people believe the power plants have been taking too much water off Lake Victoria. As a result, they have been asked to use less water until Lake Victoria goes back to its old level.Whether the low water level is caused by drought or power plants, the result is the same. This is already a poor area of Africa, where many people live a really hard life. People, animals and plants around Lake Victoria will suffer even more from low water levels on the lake. Many people need Lake Victoria for fishing or growing food. Fish need the water to live, and animals need it forwater. Plants around the lake will die without the water, and then more animals and people will suffer. Unless the lake fills soon, many people will suffer and die.1:Lake Victoria is __________.A.an important lake in AfricaB.the largest lake in the worldC.the source of water, food and power for AmericaD.the only source for the Nile River2:What does “ It is shrinking ”most probably mean?A.It is becoming larger.B.It is becoming more beautiful.C.It is becoming smaller.D.It is becoming more useful.3:The water level of Lake Victoria is now __________.A.2.5 meters B.11.9 meters C.14.4 meters D.9.4 meters4:Which of the following is NOT true according to the passage?A. Rain water is the only source for the lake.B. There has been little rain in the lake area since 2000.C. The power plants in Uganda provide water for the lake.D The power plants in Uganda were made larger in 2000.5:According to the passage, how can we solve the problems around Lake Victoria?A.People must build more power plants.B.More sources of water must be found.C.Every country should offer some money to Africa.D.All the people living in the area should move to another place.ACDCB完形填空Like any other good mother, Karen did whatever she could to help her three-year-old son, Michael, get prepared for a new baby when she found out that another baby was on the way. They 26 that the new baby was going to be a girl, and day after day, night after night, Michael sang to his 27 in Mommy’s tummy*.Finally, Michael’s little sister was born. But she was in 28 condition. The baby was sent to St. Mary’s Hospital. Days went by. The doctor told the parents “There is very 29 hope. Be prepared for the worst.”Michael kept asking his parents to let 30 see his sister. “I want to sing to her,”he said. Two weeks passed. It looked as if the worst situation would come before the week was over. Michael kept requesting about singing to his sister, but kids were 31 allowed in ICU .However, Karen made up her mind that she would take Michael to see his sister who was sick.She 32 him in an oversized scrub* suit and went into ICU. The head nurse shouted, “Get that kid out of here now! No children are allowed.”Karen said “firmly ”* “He is not leaving 33 he sings to his sister!”Michael was sent 34 his sister’s bed. He began to sing. In the pure- hearted 35 of a three-year-old, Michael sang: “You are my sunshine, my only sunshine;you make me happy when skies are gray...”36 , the baby girl responded. The pulse rate* became calm. Michael kept on 37 , “You never know, dear, how much I love you. Please don’t take mysunshine away...”The breathing became smooth.Michael kept on singing, “The other night, dear, as I lay sleeping, I dreamed I held you in my 38 ...”Michael’s little sister relaxed.Michael kept on singing, “You are my sunshine, my only sunshine. Please don’t take my sunshine away.”The next day—the very next day—the little girl was 39 enough to go home!The doctors just thought it a miracle*. Karen 40 it a miracle of love!()26. A. came out B. got out C. found out D. took out()27.A. brother B. sister C. son D. daughter()28.A. serious B. good C. nice D. fine()29.A. few B. little C. a few D. a little()30.A. us B. me C. her D. him()31.A. sometimes B. never C. often D. always()32.A. watched B. played C. dressed D. worked()33.A. until B. since C. as D. when()34.A. below B. beside C. above D. down()35.A. letter B. noise C. cry D. voice()36.A. Suddenly B. Carefully C. Recently D. Sadly()37.A. playing B. saying C. singing D. asking()38.A. hands B. eyes C. legs D. arms()39.A. well B. bad C. happy D. excited()40.A. noticed B. shouted C. called D. saw26.C 27.B 28.A 29.B 30.D31.B 32.C 33.A 34.B 35.D36.A 37.C 38.D 39.A 40.C语法填空A new backpack is on the shopping list _____ most kids when new term begins.However, for many students in the villages in India,_______(own)one backpack is a thing that’s almostimpossible.It’s even_______(bad)that the schools have no desks orchairs.This______( mean) that the kids spend the whole day on the hard groundwith their books on the floor on their knees.This makes school days_________(comfortable).Now Arambh, the organization wants to provide the students with both backpacks and school desks.The designers come up with______good idea — a backpack that can be changed into a school desk in a few seconds.It is______(make)from recycled cardboard and itcosts only 10 Indian rupees or 0.20 dollars.Because the backpack is made from cardboard, it has a limited lifespan(寿命)of six______(month) to a year .Considering the rain, the designers are trying to fix by ________(develop) a low-cost waterproof material______ can be coveredon the surface of the cardboard.单词拼写1.Chinese people like to share happiness with their friends and r_______ every Spring Festival.2.The woman l______ out the pictures on the ground.3.I want to have a friend to practice my s_______ English.4.John often c______ elephants with The Water Festival.mon gifts are flowers and cards for mothers and shirts or t______ for fathers.6.The policeman is calling to the family of the d______ man.7.The little girl learns English by r______ after the tape.8.Annie is an a______ girl and never stops talking.9.The spirit of Christmas has already s______ to other countries.10.K_______ comes from questioning.。