2017-2018杭州下城区七年级下【有答案】

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浙江省杭州市2017-2018学年七年级下学期教学质量检测(一)科学试题

浙江省杭州市2017-2018学年七年级下学期教学质量检测(一)科学试题

浙江省杭州市2017-2018学年七年级下学期教学质量检测(一)科学试题2017 学年第二学期七年级科学教学质量检测(一)一、选择题(每小题 3 分,共 66 分,每小题只有一个选项符合题意)1. 关于生殖细胞的说法,不正确的是(▲)A .精子有尾,能运动B .卵细胞是人体最大的细胞,没有尾巴但能主动运动C .受精卵的形成是新生命的开始D .受精的实质是精子和卵细胞的遗传物质融合2. 英国科学家罗伯特·爱德华被誉为“试管婴儿”之父,下列有关说法中错误的是(▲) A .试管婴儿技术适应于输卵管梗阻的患者B .试管受精是一种体外受精C .试管婴儿属于无性生殖D .试管婴儿也是在妈妈子宫内生长,染色体数目和正常孩子一样3. 观察人体生长曲线图(①②③分别表示人体神经系统、身体总发育、生殖系统),能够得出的结论是(▲)A .神经系统的发育,青春期快于婴幼儿期B .青春期,生殖器官开始迅速发育C .青春期的发育女生早于男生D .神经系统、生殖系统的发育和身体总发育一致4. 中华鲟是地球上最古老的脊椎动物,近年来由于自然繁殖能力降低,鲟鱼濒临灭绝。

目 前,长江水产研究所已经掌握了鲟鱼的人工取卵和孵化技术,每年培育出达到设计规格 的幼鲟 1 万尾左右,下列有关鲟鱼的说法不正确的是(▲)A .鲟鱼属于鱼类,体外受精B .鲟鱼作为古生物,在研究生物进化、地质、地貌等地球变迁有重要意义C .鲟鱼可以进行人工孵化主要是因为其胚胎发育的过程在体外进行D .鲟鱼的人工取卵和孵化技术说明我国克隆技术的日渐成熟5. 法国著名昆虫学家法布尔用精练的一句话,概括了蝉的一生:蝉沐风浴露,饮天地之灵 气,吸万木之精华,蛰伏四年,换来的只是短短一个月生命的“春天”,关于蝉的一生, 下列说法不正确的是(▲)A .蝉的幼虫经过“脱壳”后,羽化为我们常见的长有双翼的成虫B .蝉的发育过程经历卵、幼虫、蛹、成虫四个阶段,属于完全变态C .蝉一生蜕皮 4~5 次,其实“皮”是蝉的外骨骼D .蝉的受精方式是体内受精试卷说明本试卷由答题通平台提供;除纸质试卷,还配套数字教育资源及基于互联网技术的在线教育应用。

2017-2018学年(新课标)最新浙江省杭州市七年级下学期期末英语试题(有答案)-精品试题

2017-2018学年(新课标)最新浙江省杭州市七年级下学期期末英语试题(有答案)-精品试题

2017-2018学年(新课标)最新浙江省杭州市七年级下学期期末英语试题(有答案)-精品试题A。

Because it’s too far.B。

Because it’s raining.C。

Because she doesn’t have a XXX.听下面一段话,回答第9至11三个小题。

现在,你有15秒的时间阅读这三个小题。

9.How many people are there in the woman’s family?A。

XXX10.What does the woman’s father do?A。

XXX.B。

XXX.C。

He is a businessman.11.Where are they going this weekend?A。

To the mountains.XXX.C。

To the park.三.听短文,回答问题。

(共4小题,计8分)听下面一段短文,回答第12至15四个小题。

现在,你有20秒的时间阅读这四个小题。

12.When did the writer start to learn English?A。

When she was six years old.B。

When she was seven years old.C。

When she was eight years old.13.How long does the writer practice English every day?A。

Two hours.B。

Three hours.C。

Four hours.14.What does the XXX do?A。

She is an English XXX.B。

XXX.C。

She is a housewife.15.What does the writer want to be when she grows up?XXX.XXX.XXX.笔试部分(95分)四.单项选择。

(共15小题,计15分)从每小题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项,并标在试题的相应位置。

20182018年浙江省杭州市下城区七年级第二学期期末教学质量监测英语试卷(无听力部分答案)

20182018年浙江省杭州市下城区七年级第二学期期末教学质量监测英语试卷(无听力部分答案)

下城区2017学年第二学期期末教学质量监测七年级英语第一部分听力(共两节,满分25分)第二部分英语知识运用第一节:单词拼写(共10小题,每小题1分,满分10分)16.I went to Europe 5 years ago, I wish I could go to Europe_________.A. soonB. alsoC. earlyD. again17.The air is so clean and we ________ see many green trees and beautiful flowers in the mountain.A. mayB. mustC. canD. have to18.All of the birthday foods may be________, but the ideas are the same.A. deliciousB. specialC. differentD. popular19.Look! Here ______ my three baseballs.A. isB. areC. amD. have20.He doesn’t want to be late ________ school again, so he eats quickly and runs to school.A. forB. onC. asD. in21.Look, the girls ______ their bikes around the lake the boys are running.A. are ridingB. ridesC. rideD. rode22.The basketball player is 2.10 meters in ________.A. tallB. heightC. highD. heavy23.On Friday evening, I often ________ watch TV _________ play games with my brother.A. other; orB. either; orC. as; asD. one; other24.It is good for our health to go to bed early and not to _______late.A. get upB. take upC. go outD. get to25.--How old is his grandfather now?-- Oh, let me see. He lives a long life, and he is _______ ninety years old his year.A. stillB. alsoC. overD. by第二节完形填空(共10小题,每小题1分,满分10分)My family spent a few weeks in London last year. We went there in autumn. We think it is the best ___26___ to visit England. The weather is ___27___ quite good and there are not too many ___28___ in October.We stayed ___29____ a small hotel in the West End. We went shopping ___30____ spent too much money buying a lot of things. What we liked most was going to the cinemas. We didn’t have the chance to see such ___31___ films at home. A lot of people say English ___32___ is too bad. We didn’t think so. It is true that most of the restaurants are French, Italian, or Chinese, but Britain had some very ___33___ meals.In fact, we ___34___ our holiday so much that we have already decided to go there again this year. But we are going to take our umbrellas. I’ m sure we’ll need ___35___ sometimes.26.A. symbol B. week C. season D. way27.A. usually B. never C.also D.sometimes28.A. players B. visitors C. places D. things29.A. of B. as C. on D. at30.A. yet B. or C. but D. and31.A. wonderful B. difficult C. terrible D. well32.A. languages B. film C. clothes D. food33.A. delicious B. poor C. fresh D. expensive34.A. spent B. enjoyed C. paid D. finished35.A. her B. him C. them D. it第三部分阅读理解(共20小题,计40分)第一节A36.Can you tell us where Sherry was lost?A. In Highland Park.B. Next to a dumpster.C. In Central Park.D. On High Street.37.What will help you notice(留心) the Corgi?A. Golden hairB. Black and white hairC. Gray spotsD. Leather collar38.How much can you get if you find Emma?A. $500B. $1,000C. $100D. No reward39.Which number will you call if you find a dog with a tartan coat?A. 012-6554 7862B. 3122-543-9910C. 010-379-5122D. 020-231-212BThere are a lot of interesting things in the world. If someone tells you that they can fish in the desert(沙漠), you must think they are joking(开玩笑). but this is true. In some places of Africa, people can fish in the desert. It must be very interesting to get some fish from the sand(沙漠). and in the woods of Asia there is a kind of bird. To our surprise, this kind of bird doesn’t eat anything but iron(铁). I think the bird’s teeth must be harder than the iron. We all know that snakes can eat mice(老鼠), but in a place of Africa a kind of big mouse can eat snakes. Isn’t it interesting? Have you ever heard of “brush trees”? they are different from the trees we know. People can use their branches to brush teeth, and they are good for people’s teeth.You must be very surprised to hear there interesting things. But they are all true. In fact, there are a lot of interesting things in our world. If you are careful enough, you can find them easily around you.40.How many interesting things are there in the passage?A. 2.B. 3.C. 4.D. 5.41.Where can people fish according to the passage?A. In the riverB. In the desertC. In the woodsD. On the mountain42.What does the bird eat in the passage?A. InsectsB. IronC. MeatD. BreadCIt was a very hot day in the middle of summer, and there were no trees along the street. Mr. Read closed his shop at half past four. His bike didn’t work. So he went out into the street and began walking to the bus stop. He was very fat. The sun was high up in the sky, and soon Mr. Read felt very hot.A boy came out of another shop in the street and followed Mr. Read. He stayed very near him all the time, and he kicked Mr. Read’s shoes some times. Mr. Read looked at him angrily each time.After the fourth time, Mr. Read stopped, turned around and said to the small boy, “What are you doing? Stop following me like that! You’re going to hurt my feet.”“I’m sorry, but don’t stop me, please!” the boy said. “It’s very hot today and there aren’t any trees in the street!”43.When did the story happen?A. On a summer morningB. On a hot noonC. On a hot afternoonD. On a cool day.44.How did Mr. Read get to the bus stop?A. By busB. By carC. By bikeD. On foot45.What did Mr. Read do after the boy kicked his his shoes some times?A. He asked the boy not hurt his feet.B. He let the boy walk in front of himC. he told the boy to stop walking behind him.D. He liked the boy to go with him.46.Why did the boy follow Mr. Read?A. Because he could find the way home.B. Because the sun wouldn’t be on time.C. Because he wanted to follow Mr. Read home.D. Because the boy lost his way.DMany people like to travel by plane, but I don’t like it because an airport is usually far from the city. You have to get there early and wait for hours the plane to take off and it is often late. You can’t open the window. You can’t choose the food. Planes are the fast, but it still takes hours to get out of the airport and into the city.I like traveling by train. I think trains are safe. Railway stations are usually in cities. When you are late for a train, you can catch another one. You can walk around in the train and open the windows. You can see many interesting things on your way. I know it takes a little more time.I also like cars. You can start your journey when you want to, and you don’t need to get to a railway station or a bus stop. Also you can take many things with you in a car. But sometimes there too many cars on the road.47.Why do many people like to travel by plane?A. Because it is fast.B. Because it is safe.C. Because they can walk around in the plane.D. Because it is cheap.48.Which is Not the good thing about the train?A. It is safe.B. It takes a little more time.C. You can open the windows.D. You can walk around the train.49.What is the bad thing about the car?A. you take many things with you.B. You can start your journey when you want to.C. There are too many cars on the road.D. You needn’t go to bus station.50.What does the writer think of plane, the train and the car?A. He thinks it takes a lot of times to go to and get out of the airport.B. He likes to take a train because it takes a little more time.C. He likes to take a car because he has a car.D. He likes to take a plane because it’s fast.第二节Every year, thousands of people get hurt or die when they are crossing the road. _____51_____. Old people often get hurt or die because they can’t see or hear very well. Children usually meet with accidents (事故)because of their carelessness. _____52_____.How can we lessen(减少) traffic accidents? Everybody should follow the traffic rules. For the drivers, they shouldn’t drive too fast. If they drive too fast, it will be very difficult to stop the cars in a very short time. ______53______. So, when we walk across the road, we must try to walk along the pavements(人行道). ______54______. Look left first, next look right, then look left again. Only when we are sure that the road is clear, we can cross it. The right way to cross the road is to walk quickly. _______55______. If people run across the road, they may fall down. Teens should try to help children, old people or blind people to cross the road, and never play in the street.___58___(smart). He’s good at math and often ____59____(help) me with my homework. He likes wearing black pants ___60___ yellow T-shirts.Cindy is eleven years old. She is thin and tall. She has curly blonde hair and her ___61___(eye) are brown. She is good-looking, too, ___62___ a little bit shy. She is good at ___63___(play) the guitar. Her favorite subject at school is music. She often teaches me to play ___64___ guitar after class.Three of ___65___(we)have great fun together, and help each other and sometimes we play computer games at my house.第二节单词拼写66.You may never be a________ LuXun, but you can learn to write well.67.We are going to have a four-day trip this summer v________.68.“Don’t l_______ the dirty dishes in the kitchen!” said Lily’s mother.69.They never cut up the n________ because they are a symbol of long life.70.Tom lives in a n________ place. There is an outdoor market in front of his house.71.I’m very busy from Monday to Friday, but I have some f_______ time on weekends.72.I looked out of the window and s_______ some boys playing soccer on the playground.73.Twenty boys and thirty girls will come to my party, so I wrote f_______ invitations(邀请函)74.The old man felt bad on the way home, l_____ for him there was a doctor on the spot(现场).75.-- Could you tell me where the People’s Park is? -- Oh, it is across from the bank, b_______ the Da Ming Hotel.第三节书面表达(共1小题,满分15分)假如你是Jackie Chan, 你的美国笔友Lidia将于暑期来杭州,为了让她事先对杭州有所了解,请你根据下列表格所提供的信息,拟发一封电子邮件给Linda, 主要是告诉她这段时间的天气、食物及你安排的活动。

英语_2017-2018学年浙江省杭州市某校七年级(下)期末英语试卷真题(含答案)

英语_2017-2018学年浙江省杭州市某校七年级(下)期末英语试卷真题(含答案)

2017-2018学年浙江省杭州市某校七年级(下)期末英语试卷四、单项选择1. ﹣﹣You see, it's my dream to buy _____ Iphone 8.﹣﹣ Oh, you can ask your parents to buy ______ for you.()A a; itB an; itC a; oneD an; one2. ﹣﹣Shall we go shopping now?﹣﹣Sorry, it's not the right_______. I'm too busy.()A wayB weatherC placeD time3. ﹣﹣We Chinese like drinking wine made _______ rice.﹣﹣ Really? It's quite different from us.()A ofB fromC inD for4. ﹣﹣Please _______ the lights when you leave the classroom.﹣﹣ OK, I ________.()A turn on; willB turn off; willC turn on; doD turn off; am5. ﹣﹣ Sorry, the price of the trousers is too _______.﹣﹣ OK Would you like to have a look at a cheaper ________?() A expensive;one B expensive; pair C high; one D high; pair.6. ﹣﹣﹣I don't know _______ for the party.﹣﹣﹣You look so good now.I think the pink T﹣shirt _______ the grey jeans very well.()A what to wear;matchesB how to wear it;matchesC what to wear;match D when to go;match7. ﹣﹣ I am going to Shanghai on holiday this weekend.﹣﹣ Good luck______ you.()A onB toC withD in8. This article is ________ difficult for us because there are _______ new words in it.()A too much; too manyB much too; too muchC too much; much tooD much too; too many9. ﹣﹣Look! Here _______ the bus. Let's _______,﹣﹣Oh, no. It's No. 2Bus. We should take No. 11.()A comes; get on itB comes; get it onC is coming; get on itD come; get iton10. ﹣﹣ Angela, we are _______. Would you like some?﹣﹣ ________. I have to leave now.()A doing homework; Yes, go aheadB playing cards; Yes, pleaseC making some dumpling; No thanksD flying kites; I'm afraid not.五、完形填空11. "A friend walks in when the rest of the world walks out." Sometimes in life, you find a special friend:Someone who changes your(1)_______just by being part of it;Someone who makes you laugh until you can't (2)_______;Someone who makes you believe that there really is(3)_______in the world;Someone who convinces(使相信) you that there really in an (4)_______door just waiting for you to open it.This is Forever(永远的) Friendship.When you're (5)_______, and the world seems dark and empty, you forever friend (6)_______you up in spirits and makes that dark and empty world suddenly seem bright and (7)_______.You forever friend gets you(8)_______the hard times and the sad times. If you turn and walk away, your forever friend(9)_______. If you lose your way, your forever friend guide (引导) you, encourages(鼓励)you, holds your (10)_______and tells you that everything is going to be OK.And if you(11)_______such a friend, you feel happy, because you (12)_______not worry. You have a forever friend for life, and forever has no (13)_______.A true friend is someone who gives you a hand and touches your heart.Remember: (14)_______happens, happens for a reason.How many people have eight true friends in fact? Hardly (15)_______I Know. But some of us have all right friends and good friends.(1)A foodB timeC lifeD work(2)A thinkB stopC standD say(3)A goodB healthC humanD scenery(4)A unpackedB unlockedC unfixedD unborn(5)A highB aboveC acrossD down(6)A cheersB shutsC catchesD stands(7)A naturalB fullC funnyD upset(8)A aroundB belowC throughD beside(9)A leavesB travelsC movesD follows(10)A headB handC heartD back(11)A haveB treatC seeD need(12)A needB mustC mayD have(13)A jobB endC topD goal(14)A nothingB anythingC everythingD something(15)A someoneB everyoneC noneD anyone六、阅读理解(1)How much are the musical tickets for two children?________A 16 pounds.B,35 pounds. C 30 pounds. D 40 pounds..(2)When will the Teenage DrawingCompetition be held?________A On June 7th.B On August 6th.C On September 20th.D On April 25th..(3)Where can you watch Adele's performance this Sunday afternoon?________A At St.James's Park.B At Westfield Theater.C At Westfield Shopping Center.D At Cambridge Theater.13. Hans Christian Andersen was born in Denmark in 1805. He lived with his parents in a town called Odense. They were a very poor family and they couldn't afford to send HansChristian to school.As a little boy, Hans Christian enjoyed making up fairy tales(童话) and puppet(木偶)shows. When he was only eleven years old, his father died and he had to go out to work to make money to help his mother.Three years later, Hans Christian left home and went to the city of Copenhagen to be famous and rich. To begin with he didn't do very well there, but at last he was able to go back to school and then on to university to continue his education.He wrote fairy tales and stories and soon became famous. At first he wrote the stories that he had heard when he was a child and then began to make up new tales. During his seventy﹣one year life. Hans Christian wrote over three hundred stories.Many of his stories are still enjoyed by children today. Among his best﹣known stories are: the Emperor's New Clothes, the Ugly Duckling, the Snow Queen, the Princess and the Pea, and the little Mermaid.(1)Which sentence is true about Hans Christian when he was a boy?________A His mother died when he was 11years old.B He had to work to make money to help the family.C He went to school to learn how to make up fairy tales.D He enjoyed reading fairy tales and watching talk shows..(2)The stories Hans Christian wrote in his early years are from________.A what he learned from the universityB the story books he read in schoolC what he heard when he was youngD his own stories in the childhood.(3)What is the correct order in which these events happened?________a. Hans went to the city of Copenhagen. b. Hans began to make up new storiesc. Hans studied in the university d. Hans lived with his parents in Odense.A d﹣a﹣c﹣bB a﹣b﹣c﹣dC b﹣a﹣d﹣cD d﹣b﹣a﹣c.14. In Huston Middle School in Pennsylvanian, US, its music class is very different from yours. The class is in a traditional classroom. But it is a multimedia(多媒体) music class with many high﹣tech. In the multimedia class, students first learn how to use these tools. Later, they learn to record and compose(作曲)music, make videos, edit photos and use online media. All students must use their skills to make a recording and post it online as their final project.Music teacher Brain Querry started the multimedia music class this past school year. "I know something about technology(科技), and I also know music, " Querry said, "I asked myself: Why not put them together? I thought it would make the class more interesting, and students would learn more from it."It turns out that Querry was right. The class was well﹣received. Students in the class all like it very much. Catelynn Seinera, 14, said that she enjoys using all the different kinds of high﹣tech tools. "It's great to have such a class in our school, " Seinera said, "Knowing how to make videos is also very useful to me in other classes."(1)The music class in the school is special because________.A it is in a traditional classroomB there is no music teacherC students can use many high﹣tech devicesD a computer teacher gives the students lessons.(2)Students can learn all of the following skills in the music class except(除了)________.A how to take photos B how to use online media C how to composemusic D how to record music.(3)Why did Brain Querry start the music class in this way?________A To make many music videos.B To help students do well in computerclasses. C To teach students more about high﹣tech things. D To make the class more interesting and helpful..(4)What does the story mainly talk about?________A Music is very important and useful to students.B Schools should teach students about difficult technology.C The multimedia music class is popular among students.D Brian Querry is a popular teacher.15. A.Have enough sleepB.Keep yourself busyC.Go out and make friendsD.Break the bad habitE.Eat healthy food.F.Remember to exercise.Nothing is more important than health and happiness. But how can we live a healthy and happy life? Here are some ways for you.(1)_______Eat a lot of fruit and vegetables. They supply rich and the necessary vitaminsfor us. We also should eat less meat and junk food everyday.(2)_______Swimming, running, skating, dancing, walking and some other activities can help you keep healthy. You should exercise at least three times a week and for twenty minutes or more each time.(3)_______It is best to get about eight hours of sleep a day. It is had for our health if we don't have enough sleep. You can get sick from not getting enough sleep.(4)_______It stops you from having bad habits. To keep yourself busy, you can walk around the house, spend with your pet, watering flowers, cleaning the windows and so on. Do anything you enjoy.(5)_______Spend time and have fun with them. Talk with them, but don't talk about anything bad. You should stay with the people who are healthy and happy.七、单词拼写16. After one day's hard work, why not take a s________ and clean yourself?17. September 1st is usually the b________of a new term.18. Go straight a________ the street, the bank is on your right.19. Our school trip is pretty good. Nobody felt b________ on the way.20. The five h________ train ride from Hangzhou to Beijing is really terrible.21. Thank for s________ me the way to the subway station, or I'll be lost.22. If everyone f________ the traffic rules, it will be safer on the road.23. Could you please cut the apple into h________, so that each of the two girls can got one part.24. She s________ unhappy because she didn't pass the exam.25. We can make our dream come true t________ hard work.八、语法填空26. We are in Australia for our summer holidays. We're having a great timehere. Australia is the (1)________(six) largest country in the world. There is a lot to see,(2)________it is impossible for me to tell you everything. Sydney is a beautiful city. There are many big trees and beautiful flowers around the houses and they look really beautiful. There are(3)________many special animals in Australia,(4)________kangaroos. They are really lovely.During the past three days, Marie, Mary and I have visited many places of interest around Sydney. I'd like to spend more time(5)________(visit) here. But we don't have enough time, we have to fly to (6)________(other) city, Cairns, to see coral reefs(珊瑚礁)tomorrow. It is said that words cannot describe the (7)________(beautiful) of the colorful coral. Many famous cartoon films were (8)________(make) there. Now we are busy (9)________(put) things into our bags so that we will not lose time when we leave. We can enjoy (10)________(us) in Cairns this time tomorrow. I'm looking forward to going there!九、句型转换27. Lily can speak Chinese to us, too (改为否定句)Lily________ speak Chinese to us,________.28. Bob did some exercise this morning.(改为一般疑问句)________ Bob________ any exercise this morning.29. How's the weather in Hangzhou today?(改为同义句)________ the weather________ in Hangzhou today?30. You can't be late for school.(改为祈使句)________ late for school.31. What do you think of Chinese food?(同义句转换)________ do you________ Chinese food?十、书面表达32. 为了学习英语,我在网上结识了以为来自澳大利亚(Australia)名叫Gina的笔友(pen pal).下面是她的一些情况,请据此写一篇短文向大家介绍一下.要求:词数80左右.I have a pen pal, Gina. She's________2017-2018学年浙江省杭州市某校七年级(下)期末英语试卷答案1. D2. D3. B4. B5. D6. A7. B8. D9. A10. C11. CBDBDABCDBAABCD12. CBA13. BCA14. CADC15. E,F,A,B,C16. hower17. eginning18. long19. ored20. ours'21. howing22. ollows23. alves24. eemed25. hrough26. sixth,so,also,like,visiting,another,beauty,made,putting,ourselves27. can't,either28. Did,do29. What's,like30. Don'tbe31. How,like32. .。

浙江省杭州市2017-2018学年七年级下学期期中考试科学试题含答案

浙江省杭州市2017-2018学年七年级下学期期中考试科学试题含答案

2018学年第二学期期中质量检测七年级科学试题卷请同学们注意:1、本试卷分试题卷和答题卷两部分,满分为180分,考试时间为120分钟2、所有答案都必须写在答题卷标定的位置上,务必注意试题序号和答题序号相对应;3、考试结束后,只需上交答题卷;祝同学们取得成功!卷Ⅰ(100分)一、选择题:(每题只有一个正确答案,每题2分共50分)1、胚胎发育初期所需要的养料来源于()A、母体B、胎盘C、精子内的物质D、卵细胞内的卵黄2、下列哪类动物的发育类型和其它种类明显不同()A、狗B、牛C、青蛙D、熊猫3、由桃核萌发直接长成的桃树,所结出的桃子叫毛桃,毛桃个小味差。

桃树种植户将一段水蜜桃的枝条作为接穗,嫁接到毛桃的砧木上,结果是()A、接穗上只结水蜜桃;B、接穗上既结水蜜桃又结毛桃;C、接穗上只结毛桃;D、砧木上只结水蜜桃4、下列说法或做法中,正确..的是()A、在青春期女孩乳房已开始发育,所以应该穿紧身衣服束胸以免被同学发现;B、部分男孩在青春期开始长胡须,看起来很不好看,所以应该趁早拔掉;C、发现同学特别是异性同学长腋毛而取笑他(她);D、每个人进入青春期的时间和所表现出的情况是有差异的5、剖开一个果实,发现里面有很多种子,由此可推断发育成此果实的花里有()A、很多子房;B、很多雌蕊;C、很多胚珠;D、很多胚6、音调细而高,骨盆宽大的第二性征是在下列哪项激素的作用下产生的()A、雌性激素B、雄性激素 C 、甲状腺激素 D 、生长激素7、我们吃的大米、面粉、大豆和花生的营养物质依次是植物种子的( )A、胚乳、子叶、子叶、胚乳B、胚乳、胚乳、子叶、子叶C、胚乳、子叶、子叶、子叶D、子叶、胚乳、胚乳、胚乳8、①马铃薯块茎繁殖②草莓匍匐茎的繁殖③落地生根的种子繁殖④洋葱鳞茎的繁殖⑤枇杷种子的繁殖。

以上生殖现象属于无性生殖的是( )A、①②④B、①④⑤C、①③④D、①②③④9、下列结构中,属于完整的种子的胚的结构的一组是( )①胚乳②胚芽③胚轴④胚根⑤子叶⑥胚珠A、②③④B、②③④⑤C、①②③④D、①③⑤⑥10、在水稻开花季节,最容易造成减产的天气是 ( )A、气温较低,雨水少B、阴雨连绵,气温低C、春季多风,气温高 D.晴空万里,微风吹11、1978年诞生了世界上第一例“试管婴儿”,医学界给予这项技术以极高的评价,称之为是“继器官移植之后的第二大医学奇迹”。

17-18第二学期期末测试七年级数学答案

17-18第二学期期末测试七年级数学答案

2017~2018学年度第二学期期末学业水平调研测试七年级数学及答案说明:1、本试卷共4页,共25小题,考试时间为100分钟,满分120分.2、考生务必用黑色字迹的签字笔或钢笔在答题卡上填写自己的考生号,并用2B 铅笔把对应号码的标号涂黑,在指定位置填写学校,姓名,试室号和座位号.3、选择题每小题选出答案后,用2B 铅笔把答题卡对应题目选项的答案信息点涂黑,如需改动,用橡皮擦干净后,再选涂其他答案.4、非选择题必须在指定区域内,用黑色字迹的签字笔或钢笔作答,如需改动,先划掉原来答案,然后再写上新答案;不准使用铅笔或涂改液,不按以上要求作答的答案无效.5、考生务必保持答题卡的整洁,不折叠答题卡,考试结束后,只交回答题卡.一、选择题(本大题共10小题,每小题3分,共30分)在每小题列出的四个选项中,只有一个是正确的,请把答题卡上对应题目所选选项涂黑.1、如图,直线a ,b 与直线l 相交,则下列说法错误的是( ) A 、1∠与2∠互为对顶角 B 、1∠与3∠互为邻补角 C 、1∠与4∠是一对同旁内角 D 、2∠与4∠是一对内错角2、计算 4的值,结果是( )A 、2B 、-2C 、±2D 、2±3、在平面直角坐标系中,第二象限的点P 到x 轴的距离为3,到y 轴的距离为4,则点P 的坐标是( )A 、(3,4)B 、(-3,4)C 、(4,3)D 、(-4,3) 4、如图,点O 是直线AB 外的点,点C ,D 在AB 上,且AB OC ⊥,若5=OA ,4=OB ,2=OC ,3=OD ,则点O 到直线AB 的距离是( )A 、5B 、4C 、2D 、35、已知关于x ,y 的二元一次方程53=+y kx 有一组解为⎩⎨⎧==12y x ,则k 的值为( )A 、1B 、2C 、3D 、4lba 3 12 4第1题图OA第4题图BEAD第10题图OBEA CD 第14题图6、已知1-<a ,则下列不等式中,错误的是( ) A 、33-<a B 、33<-a C 、12<+a D 、32>-a7、经调查,某班同学上学所用的交通工具中,自行车占60%,公交车占30%,其它占10%,用扇形图描述以上统计数据,则公交车对应的扇形的圆心角的度数是( )A 、︒216B 、︒120C 、︒108D 、︒60 8、下列说法正确的是( )A 、无限小数都是无理数B 、无理数都是无限小数C 、带根号的数都是无理数D 、无理数能写成分数形式 9、下列说法错误的是( )A 、在同一平面内,过一点有且只有一条直线与已知直线垂直B 、连接直线外一点与直线上各点的所有线段中,垂线段最短C 、在同一平面内,不重合的两条直线互相平行D 、经过直线外一点,有且只有一条直线与这条直线平行10、如图,在三角形ABC 中,点D 是AB 上的点,由条件AC DE ⊥于点E ,DE ∥BC 得出的下列结论中,不正确的是( )A 、CDE BCD ∠=∠B 、︒=∠90ACBC 、B ADE ∠=∠D 、DCE BDC ∠=∠二、填空题(本大题6小题,每小题4分,共24分)请将下列各题的正确答案填写在答题卡相应的位置上.11、7-的相反数是 . 12、计算:=-+3)32( . 13、不等式1152<+x 的解集是 .14、如图,直线AB 与CD 相交于点O ,OA 平分COE ∠,若︒=∠30AOE ,则DOE ∠的度数是 .15、在直角坐标系中,线段CD 是由线段AB 平移得到,点A (-3,-2)的对应点为C (2,1),则点B (-1,2)的对应点D 的坐标是 .第18题图1PBAB A CD第18题图216、如图,8块相同的长方形地砖拼成一个长方形,则每块长方形地砖的面积是 2cm .答案:一、选择题 C A D C A B C B C D二、填空题 11、7 12、2 13、3<x 14、︒120 15、(4,5) 16、675 三、解答题(一)(本大题3小题,每小题6分,共18分) 17、计算:53325161643-+-+.34533534+=-++=(评分说明:计算364占1分,计算25161-,533-各占2分,答案正确占1分)18、画图题:(1)如图1,已知点P 是直线AB 外一点,用三角尺画图:过点P 作AB PM ⊥,垂足为M ; (2)如图2,已知直线AB 与CD ,请画出直线EF ,使EF 与直线AB 、CD 都相交,在所构成的八个角中,用数字表示其中的一对同位角.解:(1)评分说明:准确画出图形给3分,其中会过点P 作直线、用直角画出垂直线、标注垂足各占1分;(2)共3分.其中画出EF ,用数字表示同位角,写出结果各占1分.19、已知四个点的坐标,A (-3,-2),B (2,-2),C (3,1),D (-2,1). (1)在直角坐标系中描出A ,B ,C ,D 四个点;(2)连结AB 、CD ,写出线段AB ,CD 的位置关系和数量关系.解:(1)略 4分(准确描出一个点1分)(2)AB ∥CD,CD AB =; 6分(每个结论占1分)第16题图四、解答题(二)(本大题3小题,每小题7分,共21分) 20、解方程组:⎩⎨⎧=-=+112312y x y x .解:①+②得,124=x , 2分3=x , 3分把3=x 代入①得,123=+y ,1-=y , 6分∴这个方程组的解是⎩⎨⎧-==13y x . 7分或由①得,y x 21-=③, 1分 代入②得,112)21(3=--y y , 3分 解得1-=y , 4分 把1-=y 代入③得,3)1(21=-⨯-=x , 6分∴这个方程组的解是⎩⎨⎧-==13y x . 7分21、解不等式组:⎪⎩⎪⎨⎧-<--≥+-x x x x 6)1(31324,并求该不等式组的正整数解.解:不等式x x ≥+-324的解是2≤x , 2分 不等式x x -<--6)1(31的解是1->x , 4分 ∴不等式组的解是21≤<-x , 6分 ∴不等式组的正整数解是1,2. 7分22、某校为了解该校七年级同学对排球、篮球和足球三种球类运动项目的喜爱情况(每位同学必须且只须选择最喜爱的一种运动项目),进行了随机抽样调查,并将调查结果统计后,绘制成如下表和不完整的统计图表.(1)填空:=m ,=n ,=p ; (2)补全条形统计图;(3)若七年级学生总人数为900人,请你估计七年级学生喜爱足球运动项目的人数.解:(1)50=m ,14=n ,%20=p ; 3分 (2)略 5分 (3)900×20%=180(人) 7分五、解答题(三)(本大题3小题,每小题9分,共27分)23、某养牛场每天可用的饲料不超过1000kg ,原有30头大牛和15头小牛,1天要用饲料675kg ;一周后又购进12头大牛和5头小牛,这时1天要用饲料940kg .(1)求每头大牛和每头小牛1天各用饲料多少kg ?(2)一段时间后,大牛已全部上市出售,原来的小牛也长成大牛,需要再购进大牛和小牛若干头继续饲养.经测算,养牛场养牛数刚好80头,且尽量多养大牛将获得最大效益,问养牛场应购进多少头大牛和小牛才获得最大效益?解:(1)设每头大牛1天用饲料x kg ,每头小牛1天用饲料y kg , 1分依题意得,⎩⎨⎧=+=+94020426751530y x y x , 3分解得,⎩⎨⎧==520y x , 5分 答:每头大牛1天用饲料20kg ,每头小牛1天用饲料5kg ; 6分 (2)设最多购进m 头大牛,第24题图BA CD123依题意得,1000)60(5)20(20≤-++m m , 7分 解得,20≤m , 8分答:最多购进20头大牛,此时需购进40头小牛,使养牛数刚好80头牛并获得最大效益, 9分24、(1)在下面括号内,填上推理的根据,并完成下面的证明:如图,在四边形ABCD 中,BD 平分ABC ∠,31∠=∠.求证:AD ∥BC . 证明:∵BD 平分ABC ∠,∴21∠=∠( ), 又∵31∠=∠(已知),∴∠ ∠= ( ), ∴AD ∥BC ( );(2)请根据本题给出的图形举出反例,判定命题“相等的角是对顶角”是假命题;(3)命题“在四边形ABCD 中,AB ∥CD ,AD ∥BC ,那么C A ∠=∠”是真命题吗?如果是,写出推理过程(要求写出每一步的推理依据),如果不是,请举出反例.解:(1)分别填写:角平分线的定义、32∠=∠、等量代换、内错角相等,两直线平行 每个1分,共4分(2)BD 平分ABC ∠,21∠=∠,但它们不是对顶角, 5分 ∴命题“相等的角是对顶角”是假命题; 6分 (3)命题是真命题,证明如下: ∵AB ∥CD ,∴︒=∠+∠180C ABC (两直线平行,同旁内角互补), 7分 ∵AD ∥BC ,∴︒=∠+∠180A ABC (两直线平行,同旁内角互补), 8分 ∴C A ∠=∠(等角的补角相等). 9分 若证明过程正确给2分,但推理根据没有写或有写错的,全部扣1分25、如图,在直角坐标系中,点O 为坐标原点,直线AB 与两条坐标轴交于点A 、B ,OB OA <,过OB 的中点C 作直线CD 交AB 于点D ,使1∠=∠CDB ,过点D 作AB DE ⊥交x 轴于点E ,交y 轴于点F .已知直线AB 上的点的坐标是二元一次方程2443=+y x 的解.(1)写出点A 、B 、C 的坐标;(2)证明:OB CD ⊥(要求写出每一步的推理依据);(3)若点D 、E 的坐标都是方程734=-y x 的解,求四边形OADE 的面积. 解:(1)A (0,6),B (8,0),C (4,0); 3分 (2)∵OAB ∠=∠1(对顶角相等), 4分 又1∠=∠CDB (已知),∴CDB OAB ∠=∠(等量代换), ∴CD ∥y 轴(同位角相等,两直线平行), 5分 ∴︒=∠=∠90AOB DCB (两直线平行,同位角相等), ∴OB DC ⊥(垂直的定义); 6分 (3)由OB DC ⊥,得点D 的横坐标为4, 7分 ∴D (4,3),E (47,0), ∴425478=-=EB , 8分 ∴四边形OADE 的面积81173425216821=⨯⨯-⨯⨯=S . 9分。

2017-2018学年杭州市下城区七年级(下)语文期末统考卷

2017-2018学年杭州市下城区七年级(下)语文期末统考卷

2017-2018学年杭州市下城区七年级(下)语文期末统考卷满分120分, 考试时间120分钟一、语文知识积累(21分)1.阅读下面文段,根据拼音写出词语,并给加点字选择正确读音。

(4 分)2018“浙江好腔调”传统戏剧展演活动杭州专场晚会上,来自杭州各区、县的不同剧种同台展演,演员们“唱、念、做、打”配合mò qì__________ , 展现出了“台上一分钟,台下十年功”的zhuó yuè__________技艺。

现场观众时而屏[A. píng B.bǐng]息凝神、时而忍俊不禁……这是一场网络时代鲜[A. xiǎn B. xiān]有的传统戏剧艺术大餐。

2.下列选项中括号内的表述不正确的一项是 ( )(3 分)A孤岂欲卿治经为博土..邪(此句选文出自北宋司马光主持编纂的《资治通鉴》;“博士”指专掌经学传授的学官,不能译为“博学之士”)B.尔辈不能究物理(此句选文出自《阅微草堂笔记》,作者为清代文学家纪昀,即纪晓岚;“物理”指事物的道理、规律,今义“物理”已成为一门学科)C“愿为市鞍马”“东市买骏马”(诗句描写的主人公是女扮男装代父从军的木兰;句中两个“市”字,前为动词“买”,后为名词“集市、市场”)D.“无丝竹之乱耳””何陋之有"《“之”有时充当代词;有时相当于助词“的" ;有时用在主语和谓语之间,取消句子独立性,如句中加点的两个“之”字)3.一个句子往往由多个短语组合而成。

请从下面句子中各找出一个并列短语、偏正短语和动宾短语。

(3 分)古诗文中作者常常借景物描写寄寓情思、抒发感悟,所以我们能够在山川溪泉中听见回荡的心声,在花草树木间发现人生的影子。

并列短语:__________偏正短语:__________动宾短语:__________4.古诗文内容填空。

(8分)(1)朔气传金柝__________________。

(《木兰诗》)(2)可怜夜半虚前席,__________________。

【期末真题_2018】浙江省杭州地区2017-2018学年七年级下学期教学质量检测英语试题

【期末真题_2018】浙江省杭州地区2017-2018学年七年级下学期教学质量检测英语试题

2017-2018学年第二学期七年级英语教学质量检测(二)第一部分听力(共两节, 满分3分)第一节(共5小题, 每小题2分, 满分10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, 并标在试题的相应位置。

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. Which place is across from the library?A. The park.B. The post office.C. The Sixth Avenue.2. What is Uncle Joe doing?A. Playing basketball.B. Reading a newspaper.C. Cleaning the room.3. Where is the big bookstore?A. Near the school.B. Next to the cinema.C. Across from the cinema.4. How far is it from her home to school?A. About 4 kilometers.B. About 14 kilometers.C. About 40 kilometers.5. What does Lucy look like?D. Short with short black hair.E. Tall with long brown hair.F. Of medium height with curly blond hair.第二节(共10 小题, 每小题2 分, 满分20分)听下面 2 段对话和1 段独白。

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,各小题给出 5 秒钟的做答时间。

2018学年浙江省杭州市下城区第二学期期末七年级数学考试试卷及详解

2018学年浙江省杭州市下城区第二学期期末七年级数学考试试卷及详解

2018学年下城区第二学期期末七年级考试试卷数 学各位同学:1.本试卷满分120分,考试时间为100分钟。

2.答题前,必须在答题纸指定位置填写学校、姓名、座位号和准考证号。

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,答题方式详见答题纸上的说明。

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(本大题有10个小题,每小题3分,共30分)。

在每小题给出的选项中,只有一项是符合题目要求的。

1.若2x 6333⨯=,则x=( ) (A )4 (B )5(C )6 (D )7 【答案】A【解析】同底数幂相乘,底数不变,指数相加 2+x=6 x=4 故选:A2.下列是二元一次方程的是( ) (A )1+2x y= (B )2xy = (C )2x y += (D )222x y += 【答案】C【解析】二元一次方程要有两个未知数,未知数最高次数为1。

故选C.3. 在“生命安全”主题教育活动中,为了解甲、乙、丙、丁四所学校学生对生命安全知识掌握情况,小丽制定了如下方案,你认为最合理的是( ) (A )抽取甲校初二年级学生进行调查 (B )在乙校随机抽取200名学生进行调查 (C )随机抽取甲乙两校100名老师进行调查 (D )在甲乙学校各随机抽取100名学生进行调査 【答案】D4、下列因式分解正确的是( )(A ))3)(3(92-+=+x x x (B )()()3262+-=-+x x x x(C )()y x y x 23363-=+-(D )22)1(12-=-+x x x (解答)B 5. 若分式6210-+x x 有意义,则x 的取值范围是( ) (A )x ≠3 (B )x =3 (C )x ≠-10 (D )x=-10 【答案】A.(解答)分母不能为0,则2x -6≠0,解得:x ≠3.6. 如图,说法正确的是 ( ) (A )∠A =∠1 是同位角 (B )∠A =∠2 是内错角(C )∠A =∠3 是同旁内角 (D )∠A =∠B 是同旁内角【答案】D 【解析】(A )∠A =∠1 是内错角,不对 (B )∠A =∠2 但不是内错角,不对(C )∠A =∠3 是同位角,不对 (D )∠A =∠B 是同旁内角7. 在义卖活动中,小华负责卖一种圆珠笔,第一天小华卖得60元,第二天多卖了10支,卖得75元,设小华第一天卖了x 支这种圆珠笔,则下列方程正确的是( ) (A )60x=75x−10(B ) 60x=75x+10(C )75x=60x−10(D )75x=60x+10【答案】B【解析】根据题目可得第一天圆珠笔的单价为60x ,第二天圆珠笔的单价为75x+10,由此构成等量关系.8.用四个长和宽是a ,b (a >b )的长方形拼成面积64的大正方形,中间小正方形的面积是S ,( )(A)若S=4,则ab=8(B)若S=16,则ab=10(C)若ab=12,则S=16(D)若ab=14,则S=4【答案】C(解答)S=64-4ab∴C对9.多项式(2a+1)x2+bx,其中a,b为常数()(A)若公因式为3x,则a=1(B)若公因式为5x,则a=2(C)若公因式为3x,则a=3k+1(k为整数)(D)若公因式为5x,则a=5k+1(k为整数)【答案】C【解析】公因式为3x,a=3k+1代入得,2a+1=6a+3,∴A错,B错,C对同理D错10.如图,a∥b,设∠1=(3m+10)°,∠4=(7m-30)°,()(A)若∠2=∠3,则∠2=(3m-10)°(B)若∠1=∠4,则∠3=(m+30)°(C)若∠1=2∠2=2∠3,则∠2=(3m)°(D)若∠1=∠2=∠3,∠2=(5m-10)°【答案】D ∵a ∥b∴∠1+∠3=∠2+∠4 若∠2=∠3,则∠1=∠4, ∴m =10,得不出∠2和∠3的度数 B ,C 同理若∠1=∠2=∠3,则∠1=∠2=∠3=∠4 ∴m =10∠1=∠2=∠3=∠4=40° ∴D 对二.填空题(本大题共6小题,每题4分,共24分)11.一次射击训练中,李磊共射击10发,射中8环的频率是0.4,则射中8环的频数是 . 【答案】412、计算:.___________331-=÷ (解答)9113. 分解因式:a a 43- = . 【答案】)2)(2(-+a a a(解答)a a 43-)2)(2()4(423-+=-=-a a a a a a a .14 如图,点E 在AD 的延长线上,下列四个条件:1. ∠1=∠2 2. ∠C +∠ABC =180° 3. ∠C +∠CDE 4. ∠4=∠3. 能判断AB ∥CD 的是 (填序号)【答案】1,2 【解析】1. ∠1=∠2是内错角,内错角 相等,两直线平行2. ∠C +∠ABC =180°是同旁内角,同旁内角相加等于180°,则两直线平行15 关于x 的分式方程ax−3=13的解是x=b,若a=b+1,则x= 【答案】x =−3 【解析】∵a x−3−13=0.∴3a−(x−3)3(x−3)=0. ∵x =b .∴3a−(b−3)3(b−3)=0. ∵a =b +1 . ∴3(b+1)−(b−3)3(b−3)=0. 2b+6=0 x =b =−3.16. 记a ❈b =(a +b )2-(a -b )2,若A ❈22y 1641-x =y2y2+-x x ,则A =___________(用含有x ,y 的代数式表示) 【答案】(x -2y )2 (解答)a ❈b =4ab ∴A =y 2y 2+-x x ÷22y1644-x =(x -2y )2 三、解答题(本大题有7个,共66分)。

2017-2018学年浙江省杭州市余杭区七年级下期末检测科学试题(含答案)

2017-2018学年浙江省杭州市余杭区七年级下期末检测科学试题(含答案)

2017-2018学年第二学期期末基础性学力检测七年级科学考生须知:1.本试卷满分120分,考试时间100分钟。

2.答题前,在答题纸上写上学校、姓名、准考证号和座位号。

3.必须在答题纸的对应位置上答题,写在其他地方无效。

4.本卷用到的g取10N/kg。

一、选择题(每小题3分,共51分,每题只有一个正确答案)1.小莉进入青春期后,臉上长满了青春痘,经医生检查发现她体内的性激素分泌失调,这与图中哪个器官的功能有关A.甲B.乙C.丙D.丁2.小辉穿了白衬衫,蓝裤子和黑皮鞋,走进一间只亮着红灯的房子里,别人看到他所穿服装的颜色是A.白衬衫、蓝裤子和黑皮鞋B.红衬衫、蓝裤子和黑皮鞋C.红衬衫、黑裤子和黑皮鞋D.白衬衫、红裤子和红皮鞋3.如图所示是小朋友滑滑板车的情景,下列说法正确的是A.以滑板车为参照物,小朋友是运动的B.运动的滑板车最终停下来是因为不再受力C.滑板车安装轮子减小了对地面的压强D.蹬地使滑板车向前运动,说明力能改变物体的运动状态4.在杭州工作的迈克感觉近段时间的天气一天比一天炎热,夜幕也一天比一天更晚地来临……,那么这段时间对应地球运行的位置变化是图中的(图中涂黑部分表示黑夜)A.b a →B.c b →C.d c →D.a d →5.下图是由菜豆种子萌发成的幼苗。

下列说法正确的是A.菜豆种子中的胚乳是由受精卵育而来的B.菜豆种子萌发时,先长出叶,再长出根C.菜豆种子萌发时所需的营养主要由子叶提供D.只要温度、水分、空气适宜,菜豆种子就一定会萌发6.下图所示的光学现象中,下列描述或解释正确的是A.图(a)中,小孔成的是倒立的虚像B.图(b)中,人配戴的凹透镜可以矫正远视眼C.图(c)中,白光通过三棱镜分解出的紫光常被人们用来灭菌D.图(d)中,漫反射的每条光线都遵循光的反射定律7.如图所示从车厢顶的A 处有一小球自由落下,结果落在地板上的B 处,则此时该车厢所处的运动状态可能是A.向左加速运动B.匀速向右运动C.由静止向右启动D.匀速向左运动8.生命到底起源自哪里?人们提出了各种假说,目前各种争论还在持续。

2018学年浙江省杭州市下城区第二学期期末七年级数学考试试卷及详解

2018学年浙江省杭州市下城区第二学期期末七年级数学考试试卷及详解

2018学年下城区第二学期期末七年级考试试卷数 学各位同学:1.本试卷满分120分,考试时间为100分钟。

2.答题前,必须在答题纸指定位置填写学校、姓名、座位号和准考证号。

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,答题方式详见答题纸上的说明。

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(本大题有10个小题,每小题3分,共30分)。

在每小题给出的选项中,只有一项是符合题目要求的。

1.若2x 6333⨯=,则x=( ) (A )4 (B )5(C )6 (D )7 【答案】A【解析】同底数幂相乘,底数不变,指数相加 2+x=6 x=4 故选:A2.下列是二元一次方程的是( ) (A )1+2x y= (B )2xy = (C )2x y += (D )222x y += 【答案】C【解析】二元一次方程要有两个未知数,未知数最高次数为1。

故选C.3. 在“生命安全”主题教育活动中,为了解甲、乙、丙、丁四所学校学生对生命安全知识掌握情况,小丽制定了如下方案,你认为最合理的是( ) (A )抽取甲校初二年级学生进行调查 (B )在乙校随机抽取200名学生进行调查 (C )随机抽取甲乙两校100名老师进行调查 (D )在甲乙学校各随机抽取100名学生进行调査 【答案】D4、下列因式分解正确的是( )(A ))3)(3(92-+=+x x x (B )()()3262+-=-+x x x x(C )()y x y x 23363-=+-(D )22)1(12-=-+x x x (解答)B 5. 若分式6210-+x x 有意义,则x 的取值范围是( ) (A )x ≠3 (B )x =3 (C )x ≠-10 (D )x=-10 【答案】A.(解答)分母不能为0,则2x -6≠0,解得:x ≠3.6. 如图,说法正确的是 ( ) (A )∠A =∠1 是同位角 (B )∠A =∠2 是内错角(C )∠A =∠3 是同旁内角 (D )∠A =∠B 是同旁内角【答案】D 【解析】(A )∠A =∠1 是内错角,不对 (B )∠A =∠2 但不是内错角,不对(C )∠A =∠3 是同位角,不对 (D )∠A =∠B 是同旁内角7. 在义卖活动中,小华负责卖一种圆珠笔,第一天小华卖得60元,第二天多卖了10支,卖得75元,设小华第一天卖了x 支这种圆珠笔,则下列方程正确的是( ) (A )60x=75x−10(B ) 60x=75x+10(C )75x=60x−10(D )75x=60x+10【答案】B【解析】根据题目可得第一天圆珠笔的单价为60x ,第二天圆珠笔的单价为75x+10,由此构成等量关系.8.用四个长和宽是a ,b (a >b )的长方形拼成面积64的大正方形,中间小正方形的面积是S ,( )(A)若S=4,则ab=8(B)若S=16,则ab=10(C)若ab=12,则S=16(D)若ab=14,则S=4【答案】C(解答)S=64-4ab∴C对9.多项式(2a+1)x2+bx,其中a,b为常数()(A)若公因式为3x,则a=1(B)若公因式为5x,则a=2(C)若公因式为3x,则a=3k+1(k为整数)(D)若公因式为5x,则a=5k+1(k为整数)【答案】C【解析】公因式为3x,a=3k+1代入得,2a+1=6a+3,∴A错,B错,C对同理D错10.如图,a∥b,设∠1=(3m+10)°,∠4=(7m-30)°,()(A)若∠2=∠3,则∠2=(3m-10)°(B)若∠1=∠4,则∠3=(m+30)°(C)若∠1=2∠2=2∠3,则∠2=(3m)°(D)若∠1=∠2=∠3,∠2=(5m-10)°【答案】D ∵a ∥b∴∠1+∠3=∠2+∠4 若∠2=∠3,则∠1=∠4, ∴m =10,得不出∠2和∠3的度数 B ,C 同理若∠1=∠2=∠3,则∠1=∠2=∠3=∠4 ∴m =10∠1=∠2=∠3=∠4=40° ∴D 对二.填空题(本大题共6小题,每题4分,共24分)11.一次射击训练中,李磊共射击10发,射中8环的频率是0.4,则射中8环的频数是 . 【答案】412、计算:.___________331-=÷ (解答)9113. 分解因式:a a 43- = . 【答案】)2)(2(-+a a a(解答)a a 43-)2)(2()4(423-+=-=-a a a a a a a .14 如图,点E 在AD 的延长线上,下列四个条件:1. ∠1=∠2 2. ∠C +∠ABC =180° 3. ∠C +∠CDE 4. ∠4=∠3. 能判断AB ∥CD 的是 (填序号)【答案】1,2 【解析】1. ∠1=∠2是内错角,内错角 相等,两直线平行2. ∠C +∠ABC =180°是同旁内角,同旁内角相加等于180°,则两直线平行15 关于x 的分式方程ax−3=13的解是x=b,若a=b+1,则x= 【答案】x =−3 【解析】∵a x−3−13=0.∴3a−(x−3)3(x−3)=0. ∵x =b .∴3a−(b−3)3(b−3)=0. ∵a =b +1 . ∴3(b+1)−(b−3)3(b−3)=0. 2b+6=0 x =b =−3.16. 记a ❈b =(a +b )2-(a -b )2,若A ❈22y 1641-x =y2y2+-x x ,则A =___________(用含有x ,y 的代数式表示) 【答案】(x -2y )2 (解答)a ❈b =4ab ∴A =y 2y 2+-x x ÷22y1644-x =(x -2y )2 三、解答题(本大题有7个,共66分)。

2017-2018学年(新课标)最新浙江省杭州市七年级下学期期末英语试题(有答案)-精品试题

2017-2018学年(新课标)最新浙江省杭州市七年级下学期期末英语试题(有答案)-精品试题

七年级英语下学期期末质量检测卷请同学们注意:1.考试卷分试题卷和答题卷两部分。

满分120分,考试时间为90分钟。

2.所有答案都必须做在答题卷指定的位置上,务必注意试题序号和答题序号相对应。

3.考试结束后,只需上交答题卷。

听力部分(25分)一.听小对话,回答问题。

(共5小题,计5分)听下面五段小对话。

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,并标在试题的相应位置。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1.How dose Linda’s father go to work?A. He goes to work by bike.B. He goes to work by car.C. He goes to work by train.2. What time do they play games?A. 5:30B.4:25C.4:303. Where are they talking?A. They are talking at school.B. They are talking at home.C. They are talking in a shop.4. What is Mike doing?A. He is walking.B. He is riding a bike.C. He is swimming.5. Why is Ann’s father in the hospital?A. Because he is ill.B. Because Ann’s grandma is ill.C. Because Ann’s grandpa is ill.二.听长对话,回答问题(共6小题,计12分)听下面一段话,回答第6至8三个小题。

现在,你有15秒的时间阅读这三个小题。

6. How is Mr. Wang going to school today?A. By bikeB. On footC. By car7. What’s the weather like today?A. RainyB. SnowyC. Sunny8. Why doesn’t Miss Green come to school by bike today?A. Because she doesn’t like riding her bike.B. Because her bike is broken.C. Because she lives close to the school.听下面一段话,回答第9至11三个小题。

英语_2017-2018学年浙江省杭州市下城区七年级(下)期末英语试卷真题(含答案)

英语_2017-2018学年浙江省杭州市下城区七年级(下)期末英语试卷真题(含答案)

2017-2018学年浙江省杭州市下城区七年级(下)期末英语试卷一、单词拼写1. I went to Europe 5years ago, I wish I could go to Europe_________.()A soonB alsoC earlyD again2. The air is so clean and we ________ see many green trees and beautiful flowers in the mountain.()A mayB mustC canD have to3. All of the birthday foods may be________, but the ideas are the same.()A deliciousB specialC differentD popular4. Here ______ my three baseballs.()A isB areC amD have5. He doesn't want to be late ________ school again, so he eats quickly and runs to school.()A forB onC asD in6. Look, the girls ______ their bikes around the lake the boys are running.()A are ridingB ridesC rideD rode7. The basketball player is 2.10meters in ________.()A tallB heightC highD heavy8. On Friday evening, I often ________ watch TV _________ play games with my brother.()A other; orB either; orC as; asD one; other9. It is good for our health to go to bed early and not to _______late.()A get upB take upC go outD get to10. ﹣﹣How old is his grandfather now?﹣﹣ Oh, let me see. He lives a long life, and he is _______ ninety years old hisyear.()A stillB alsoC overD by二、完形填空11. My family spent a few weeks in London last year. We went there in autumn. We think it is the best (1)_______to visit England. The weather is (2)_______quite good and there are not too many (3)_______in October.We stayed (4)_______a small hotel in the West End. We went shopping (5)_______spent too much money buying a lot of things. What we liked most was going to the cinemas. We didn't have the chance to see such(6)_______films at home. A lot of people say English(7)_______is too bad. We didn't think so. It is true that most of the restaurants are French, Italian, or Chinese, but Britain had some very (8)_______meals.In fact, we (9)_______our holiday so much that we have already decided to go there again this year. But we are going to take our umbrellas. I' m sure we'll need (10)_______sometimes.(1)A symbolB weekC seasonD way(2)A usuallyB neverC alsoD sometimes(3)A playersB visitorsC placesD things(4)A ofB asC onD at(5)A yetB orC butD and(6)A wonderfulB difficultC terribleD well(7)A languagesB filmC clothesD food(8)A deliciousB poorC freshD expensive(9)A spentB enjoyedC paidD finished(10)A herB himC themD it三、阅读理解(1)Can you tell us where Sherry was lost?________A In Highland Park.B Next to a dumpster.C In Central Park.D On High Street..(2)What will help you notice(留心) the Corgi?________A Golden hairB Black and white hairC Gray spotsD Leather collar.(3)How much can you get if you find Emma?________A ¥500B ¥1,000C ¥100D No reward.(4)Which number will you call if you find a dog with a tartan coat?________A 012﹣6554 7862B 3122﹣543﹣9910C 010﹣379﹣5122D 020﹣231﹣212.13. There are a lot of interesting things in the world. If someone tells you that they can fish in the desert(沙漠), you must think they are joking(开玩笑). but this is true. In some places of Africa, people can fish in the desert. It must be very interesting to get some fish from the sand(沙漠). and in the woods of Asia there is a kind of bird. To our surprise, this kind of bird doesn't eat anything but iron(铁). I think the bird's teeth must be harder than the iron. We all know that snakes can eat mice(老鼠), but in a place of Africa a kind of big mouse can eat snakes. Isn't it interesting? Have you ever heard of "brush trees"? they are different from the trees we know. People can use their branches to brush teeth, and they are good for people's teeth.You must be very surprised to hear there interesting things. But they are all true. In fact, there are a lot of interesting things in our world. If you are careful enough, you can find them easily around you.(1)How many interesting things are there in the passage?________A 2.B 3.C 4.D 5..(2)Where can people fish according to the passage?________A In the riverB In the desertC In the woodsD On the mountain.(3)What does the bird eat in the passage?________A InsectsB IronC MeatD Bread.14. It was a very hot day in the middle of summer, and there were no trees along the street. Mr. Read closed his shop at half past four. His bike didn't work. So he went out into the street and began walking to the bus stop. He was very fat. The sun was high up in the sky, and soon Mr. Read felt very hot.A boy came out of another shop in the street and followed Mr. Read. He stayed very near him all the time, and he kicked Mr. Read's shoes some times. Mr. Read looked at him angrily each time.After the fourth time, Mr. Read stopped, turned around and said to the small boy, "What are you doing? Stop following me like that! You're going to hurt my feet.""I'm sorry, but don't stop me, please!" the boy said. "It's very hot today and there aren'tany trees in the street!"(1)When did the story happen?________A On a summer morningB On a hot noonC On a hot afternoonD On a cool day..(2)How did Mr. Read get to the bus stop?________A By busB By carC By bikeD On foot.(3)What did Mr. Read do after the boy kicked his his shoes some times?________A He asked the boy not hurt his feet.B He let the boy walk in front of himC he told the boy to stop walking behind him.D He liked the boy to go with him..(4)Why did the boy follow Mr. Read?________A Because he could find the way home.B Because he could find the shade behind Mr. Read.C Because he wanted to follow Mr. Read home.D Because the boy lost his way.15. Many people like to travel by plane, but I don't like it because an airport is usually far from the city. You have to get there early and wait for hours the plane to take off and it is often late. You can't open the window. You can't choose the food. Planes are fast, but it still takes hours to get out of the airport and into the city.I like traveling by train. I think trains are safe. Railway stations are usually in cities. When you are late for a train, you can catch another one. You can walk around in the train and open the windows. You can see many interesting things on your way. I know it takes a little more time.I also like cars. You can start your journey when you want to, and you don't need to get to a railway station or a bus stop. Also you can take many things with you in a car. But sometimes there are too many cars on the road.(1)Why do many people like to travel by plane?________A Because it is fast.B Because it is safe.C Because they can walk around in the plane.D Because it is cheap..(2)Which is Not the good thing about the train?________A It is safe.B It takes a little more time.C You can open thewindows. D You can walk around the train..(3)What is the bad thing about the car?________A You take many things with you.B You can start your journey when you want to.C There are too many cars on the road.D You needn't go to bus station..(4)What does the writer think of plane, the train and the car?________A He thinks it takes a lot of times to go to and get out of the airport.B He likes to take a train because it takes a little more time.C He likes to take a car because he has acar. D He likes to take a plane because it's fast.16. Every year, thousands of people get hurt or die when they are crossing the road.(1)_______. Old people often get hurt or die because they can't see or hear very well. Children usually meet with accidents (事故)because of their carelessness.(2)_______.How can we lessen(减少) traffic accidents? Everybody should follow the traffic rules. For the drivers, they shouldn't drive too fast. If they drive too fast, it will be very difficult to stop the cars in a very short time.(3)_______. So, when we walk across the road, we must try to walk along the pavements(人行道).(4)_______. Look left first,next look right, then look left again. Only when we are sure that the road is clear, wecan cross it. The right way to cross the road is to walk quickly.(5)_______. If peoplerun across the road, they may fall down. Teens should try to help children, old peopleor blind people to cross the road, and never play in the street.A.It's not safe to run.B.They forget to look and listen before they cross the road.C.We must stop and look both ways before crossing the road.D.Most of these people are old people and children.E.For the walkers, it's very important to be careful when they are walking on the road.五、语法填空17. I'm Tony. My friends are Frank and Cindy. We often do many things together. Frank (1)________(live) next to my home and we are in the same class. He is thirteen yearsold and he is (2)________medium height. He has curly hair and blue eyes. He's good﹣looking and very (3)________(smart). He's good at math and often (4)________(help)me with my homework. He likes wearing black pants (5)________yellow T﹣shirts.Cindy is eleven years old. She is thin and tall. She has curly blonde hair and her (6)________(eye) are brown. She is good﹣looking, too,(7)________a little bit shy. Sheis good at (8)________(play) the guitar. Her favorite subject at school is music. She often teaches me to play (9)________guitar after class.Three of (10)________(we)have great fun together, and help each other and sometimes we play computer games at my house.六、单词拼写18. You may never be a________ LuXun, but you can learn to write well.19. We are going to have a four﹣day trip this summer v________.20. "Don't l________ the dirty dishes in the kitchen!" said Lily's mother.21. They never cut up the n________ because they are a symbol of long life.22. Tom lives in a n________ place. There is an outdoor market in front of his house.23. I'm very busy from Monday to Friday, but I have some f________ time on weekends.24. I looked out of the window and s________ some boys playing soccer on the playground.25. Twenty boys and thirty girls will come to my party, so I wrote f________ invitations(邀请函)26. The old man felt bad on the way home, l________ for him there was a doctor on the spot(现场).27. ﹣﹣ Could you tell me where the People's Park is?﹣﹣ Oh, it is across from the bank,b________ the Da Ming Hotel.七、书面表达28. 假如你是Jackie Chan,你的美国笔友Lidia将于暑期来杭州,为了让她事先对杭州有所了解,请你根据下列表格所提供的信息,拟发一封电子邮件给Linda,主要是告诉她这段时间的天气、食物及你安排的活动.注意:1、内容必须包括表格所给的信息,并提出2项活动安排;2、字数:70字左右3、短文开头已给出,不计入总字数.Dear Lidia,I'm glad that you are coming to visit Hangzhou. Now, let me tell you something about Hangzhou.________Best wishes!Yours,Jackie Chan2017-2018学年浙江省杭州市下城区七年级(下)期末英语试卷答案1. D2. C3. C4. B5. A6. A7. B8. B9. A10. C11. CABDDADABC12. CDBD13. CBB14. CDCB15. ABCA16. D,B,E,A,C17. lives,of,smart,helps,and,eyes,but,playing,the,us18. nother19. acation20. eave21. oodles22. oisy23. ree24. aw25. ifty26. ucky27. ehind28. It'ssunnyandalittlehotSoyouhadbetterwearcoolclothesThereismuchdeliciousfood,suchasPianErchua,DongpoPorkandsoonEspeciallyDongpoPork,itissaidthatitwasinventedbySuDongpoIthinkyouwilllikeitIamgoingtoshowyoutheWestLaketh atwasfamousallovertheworldThenwegotovisitLingyinTemple。

2017-2018学年浙教版七年级第二学期期末测试卷及答案

2017-2018学年浙教版七年级第二学期期末测试卷及答案

2017-2018学年七年级(下)期末数学试卷一、选择题(每小题2分,共20分)1.如图的图案是由下列四个选项中的哪个图案平移得到的()A.B.C.D.2.已知:如图,直线a,b被直线c所截,且a∥b,若∠1=70°,则∠2的度数是()A.130°B.110°C.80°D.70°3.分式有意义,则x的取值范围是()A.x≠1 B.x≠﹣1 C.x=1 D.x=﹣14.下列计算结果正确的是()A.a3×a4=a12B.a5÷a=a5C.(ab2)=ab6D.(a3)2=a65.下列各式由左到右的变形中,属于因式分解的是()A.a(x+y)=ax+ay B.x2﹣4x+4=(x﹣2)2C.2a﹣4b+2=2(a﹣2b)D.x2﹣16+3x=(x﹣4)(x+4)+3x6.下列调查中,适合采用全面调查方式的是()A.了解一批炮弹的杀伤半径B.了解全国中学生的身高情况C.对市场上某种饮料质量情况的调查D.调查一架隐形战机的各零部件的质量情况7.二元一次方程组的解是()A.B.C.D.8.甲、乙两班学生植树造林,已知甲班每天比乙班多植5棵树,甲班植80棵树所用的天数与乙班植70棵树所用的天数相等.若设甲班每天植树x棵,则根据题意列出方程是()A.B.C.D.9.已知x﹣=2,则代数式5x2+﹣3的值为()A.27 B.7 C.17 D.210.用如图①中的长方形和正方形纸板作侧面和底面,做成如图②的竖式和横式的两种无盖纸盒.现在仓库里有m张正方形纸板和n张长方形纸板,如果做两种纸盒若干个,恰好使库存的纸板用完,则m+n的值可能是()A.2013 B.2014 C.2015 D.2016二、填空题(每小题3分,共30分)11.用科学记数法表示:0.00000706=.12.当x=时,分式的值为0.13.如图所示,在不添加辅助线及字母的前提下,请写出一个能判定AD∥BC的条件:(一个即可).14.某校九年级一班数学单元测试全班所有学生成绩的频数分布直方图如图所示(满分100分,学生成绩取整数),则成绩在90.5~95.5这一分数段的频率是.15.计算:(6a2﹣10ab+4a)÷(2a)=.16.若多项式x2﹣kx+9是一个完全平方式,则常数k的值是.17.计算:﹣=.18.若多项式x2﹣mx+n(m、n是常数)分解因式后,有一个因式是x﹣2,则2m﹣n的值为.19.已知:如图放置的长方形ABCD和等腰直角三角形EFG中,∠F=90°,FE=FG=4cm,AB=2cm,AD=4cm,且点F、G、D、C在同一直线上,点G和点D 重合,现将△EFG沿射线FC向右平移,当点F和点D重合时停止移动,若△EFG 与长方形重叠部分的面积是4cm2,则△EFG向右平移了cm.20.已知实数a,b,c满足a+b=ab=c,有下列结论:①若c≠0,则=﹣;②若a=3,则b+c=9;③若c≠0,则(1﹣a)(1﹣b)=+;④若c=5,则a2+b2=15.其中正确的是(把所有正确结论的序号都填上).三、解答题(共50分)21.计算下列各题(1)(﹣3)2+(π+)0﹣(﹣)﹣2(2)(2x﹣1)2﹣(x﹣1)(4x+3)22.解方程(组)(1)(2)﹣=2.23.分解因式(1)2x2﹣8(2)3x2y﹣6xy2+3y3.24.如图,已知∠A=∠C,AD⊥BE,BC⊥BE,点E,D,C在同一条直线上.(1)判断AB与CD的位置关系,并说明理由.(2)若∠ABC=120°,求∠BEC的度数.25.某学校为了解七年级男生体质健康情况,随机抽取若干名男生进行测试,测试结果分为优秀、良好、合格、不合格四个等级,统计整理数据并绘制图1、图2两幅不完整的统计图,请根据图中信息回答下列问题:(1)本次接收随机抽样调查的男生人数为人,扇形统计图中“良好”所对应的圆心角的度数为;(2)补全条形统计图中“优秀”的空缺部分;(3)若该校七年级共有男生480人,请估计全年级男生体质健康状况达到“良好”的人数.26.为了创建国家卫生城市,需要购买甲、乙(如图)两种类型的分类垃圾桶替换原来的垃圾桶,A,B,C三个小区所购买的数量和总价如表所示.(1)问甲型垃圾桶、乙型垃圾桶的单价分别是每套多少元?(2)求a,b的值.四、附加题(每小题10分,共20分)27.已知:直线a∥b,点A,B分别是a,b上的点,APB是a,b之间的一条折弦,且∠APN<90°,Q是a,b之间且在折线APB左侧的一点,如图.(1)若∠1=33°,∠APB=74°,则∠2=度.(2)若∠Q的一边与PA平行,另一边与PB平行,请探究∠Q,∠1,2间满足的数量关系并说明理由.(3)若∠Q的一边与PA垂直,另一边与PB平行,请直接写出∠Q,∠1,2之间满足的数量关系.28.教科书中这样写道:“我们把多项式a2+2ab+b2及a2﹣2ab+b2叫做完全平方式”,如果一个多项式不是完全平方式,我们常做如下变形:先添加一个适当的项,使式子中出现完全平方式,再减去这个项,使整个式子的值不变,这种方法叫做配方法.配方法是一种重要的解决问题的数学方法,不仅可以将一个看似不能分解的多项式分解因式,还能解决一些与非负数有关的问题或求代数式最大值,最小值等.例如:分解因式x2+2x﹣3=(x2+2x+1)﹣4=(x+1)2﹣4=(x+1+2)(x+1﹣2)=(x+3)(x﹣1);例如求代数式2x2+4x﹣6的最小值.2x2+4x﹣6=2(x2+2x﹣3)=2(x+1)2﹣8.可知当x=﹣1时,2x2+4x﹣6有最小值,最小值是﹣8,根据阅读材料用配方法解决下列问题:(1)分解因式:m2﹣4m﹣5=.(2)当a,b为何值时,多项式a2+b2﹣4a+6b+18有最小值,并求出这个最小值.(3)当a,b为何值时,多项式a2﹣2ab+2b2﹣2a﹣4b+27有最小值,并求出这个最小值.参考答案与试题解析一、选择题(每小题2分,共20分)1.如图的图案是由下列四个选项中的哪个图案平移得到的()A.B.C.D.【考点】利用平移设计图案.【分析】根据平移是指图形的平行移动,平移时图形中所有点移动的方向一致,并且移动的距离相等可得答案.【解答】解:根据平移可得B是平移可得到图形中的图案,故选:B.2.已知:如图,直线a,b被直线c所截,且a∥b,若∠1=70°,则∠2的度数是()A.130°B.110°C.80°D.70°【考点】平行线的性质.【分析】由a∥b,根据两直线平行,同位角相等,即可求得∠3的度数,又由邻补角的定义即可求得∠2的度数.【解答】解:∵a∥b,∴∠3=∠1=70°,∵∠2+∠3=180°,∴∠2=110°.故选B.3.分式有意义,则x的取值范围是()A.x≠1 B.x≠﹣1 C.x=1 D.x=﹣1【考点】分式有意义的条件.【分析】分母不为零,分式有意义,依此求解.【解答】解:由题意得x﹣1≠0,解得x≠1.故选A.4.下列计算结果正确的是()A.a3×a4=a12B.a5÷a=a5C.(ab2)=ab6D.(a3)2=a6【考点】同底数幂的除法;同底数幂的乘法;幂的乘方与积的乘方.【分析】根据同底数幂的乘法、除法,积的乘方,幂的乘方,即可解答.【解答】解:A、a3×a4=a7,故本选项错误;B、a5÷a=a4,故本选项错误;C、(ab2)3=a3b6,故本选项错误;D、正确;故选:D.5.下列各式由左到右的变形中,属于因式分解的是()A.a(x+y)=ax+ay B.x2﹣4x+4=(x﹣2)2C.2a﹣4b+2=2(a﹣2b)D.x2﹣16+3x=(x﹣4)(x+4)+3x【考点】因式分解的意义.【分析】把一个多项式化为几个整式的积的形式,这种变形叫做把这个多项式因式分解,也叫做分解因式,根据定义即可判断.【解答】解:A、结果不是整式的乘积的形式,不是因式分解,选项错误;B、是因式分解,选项正确;C、2a﹣4b+2=2(a﹣2b+1),选项错误;D、结果不是整式的乘积的形式,不是因式分解,选项错误.故选B.6.下列调查中,适合采用全面调查方式的是()A.了解一批炮弹的杀伤半径B.了解全国中学生的身高情况C.对市场上某种饮料质量情况的调查D.调查一架隐形战机的各零部件的质量情况【考点】全面调查与抽样调查.【分析】由普查得到的调查结果比较准确,但所费人力、物力和时间较多,而抽样调查得到的调查结果比较近似.【解答】解:A、了解一批炮弹的杀伤半径,适合抽查,选项错误;B、了解全国中学生的身高情况,适合抽查,选项错误;C、对市场上某种饮料质量情况的调查,适合抽查,选项错误;D、调查一架隐形战机的各零部件的质量情况,适合全面调查,选项正确.故选D.7.二元一次方程组的解是()A.B.C.D.【考点】解二元一次方程组.【分析】方程组利用代入消元法求出解即可.【解答】解:,把②代入①得:x+4x=10,即x=2,把x=2代入②得:y=4,则方程组的解为.故选A.8.甲、乙两班学生植树造林,已知甲班每天比乙班多植5棵树,甲班植80棵树所用的天数与乙班植70棵树所用的天数相等.若设甲班每天植树x棵,则根据题意列出方程是()A.B.C.D.【考点】由实际问题抽象出分式方程.【分析】设甲班每天植树x棵,则乙班每天植树(x﹣5)棵,根据甲班植80棵树所用的天数与乙班植70棵树所用的天数相等,列方程即可.【解答】解:设甲班每天植树x棵,则乙班每天植树(x﹣5)棵,由题意得,=.故选D.9.已知x﹣=2,则代数式5x2+﹣3的值为()A.27 B.7 C.17 D.2【考点】完全平方公式.【分析】原式前两项提取5,利用完全平方公式变形,将已知等式代入计算即可求出值.【解答】解:∵x﹣=2,∴原式=5(x2+)﹣3=5[(x﹣)2+2]﹣3=30﹣3=27,故选A10.用如图①中的长方形和正方形纸板作侧面和底面,做成如图②的竖式和横式的两种无盖纸盒.现在仓库里有m张正方形纸板和n张长方形纸板,如果做两种纸盒若干个,恰好使库存的纸板用完,则m+n的值可能是()A.2013 B.2014 C.2015 D.2016【考点】二元一次方程组的应用.【分析】设做竖式和横式的两种无盖纸盒分别为x个、y个,然后根据所需长方形纸板和正方形纸板的张数列出方程组,再根据x、y的系数表示出m+n并判断m+n为5的倍数,然后选择答案即可.【解答】解:设做竖式和横式的两种无盖纸盒分别为x个、y个,根据题意得,两式相加得,m+n=5(x+y),∵x、y都是正整数,∴m+n是5的倍数,∵2013、2014、2015、2016四个数中只有2015是5的倍数,∴m+n的值可能是2015.故选C.二、填空题(每小题3分,共30分)11.用科学记数法表示:0.00000706=7.06×10﹣6.【考点】科学记数法—表示较小的数.【分析】绝对值小于1的正数也可以利用科学记数法表示,一般形式为a×10﹣n,与较大数的科学记数法不同的是其所使用的是负指数幂,指数由原数左边起第一个不为零的数字前面的0的个数所决定.【解答】解:0.00000706=7.06×10﹣6,故答案为:7.06×10﹣6.12.当x=时,分式的值为0.【考点】分式的值为零的条件.【分析】根据分式值为零的条件是分子等于零且分母不等于零进行判断.【解答】解:∵分式的值为0,∴3x﹣1=0,且x+2≠0,解得x=,x≠﹣2,即x=.故答案为:13.如图所示,在不添加辅助线及字母的前提下,请写出一个能判定AD∥BC的条件:∠EAD=∠B(一个即可).【考点】平行线的判定.【分析】根据平行线的判定进行分析,可以从同位角相等或同旁内角互补的方面写出结论.【解答】解:∵AD和BC被BE所截,∴当∠EAD=∠B时,AD∥BC.故答案为:∠EAD=∠B.14.某校九年级一班数学单元测试全班所有学生成绩的频数分布直方图如图所示(满分100分,学生成绩取整数),则成绩在90.5~95.5这一分数段的频率是0.4.【考点】频数(率)分布直方图.【分析】由每一组内的频数总和等于总数据个数得到学生总数,再由频率=频数÷数据总和计算出成绩在90.5~95.5这一分数段的频率.【解答】解:读图可知:共有(1+4+10+15+20)=50人,其中在90.5~95.5这一分数段有20人,则成绩在90.5~95.5这一分数段的频率是=0.4.故本题答案为:0.4.15.计算:(6a2﹣10ab+4a)÷(2a)=3a﹣5b+2.【考点】整式的除法.【分析】根据多项式除以单项式的运算方法求解即可.【解答】解:(6a2﹣10ab+4a)÷(2a)=(6a2)÷(2a)﹣(10ab)÷(2a)+(4a)÷(2a)=3a﹣5b+2故答案为:3a﹣5b+2.16.若多项式x2﹣kx+9是一个完全平方式,则常数k的值是±6.【考点】完全平方式.【分析】先根据两平方项项确定出这两个数是x和3,再根据完全平方公式求解即可.【解答】解:∵x2﹣kx+9=x2﹣kx+32,∴﹣kx=±2×x×3,解得k=±6.故答案为:±6.17.计算:﹣=.【考点】分式的加减法.【分析】根据同分母分式加减法法则:同分母的分式相加减,分母不变,把分子相加减,求解即可.【解答】解:原式===.故答案为:.18.若多项式x2﹣mx+n(m、n是常数)分解因式后,有一个因式是x﹣2,则2m﹣n的值为4.【考点】因式分解的意义.【分析】设另一个因式为x﹣a,因为整式乘法是因式分解的逆运算,所以将两个因式相乘后结果得x2﹣mx+n,根据各项系数相等列式,计算可得2m﹣n=4.【解答】解:设另一个因式为x﹣a,则x2﹣mx+n=(x﹣2)(x﹣a)=x2﹣ax﹣2x+2a=x2﹣(a+2)x+2a,得,由①得:a=m﹣2③,把③代入②得:n=2(m﹣2),2m﹣n=4,故答案为:4.19.已知:如图放置的长方形ABCD和等腰直角三角形EFG中,∠F=90°,FE=FG=4cm,AB=2cm,AD=4cm,且点F、G、D、C在同一直线上,点G和点D重合,现将△EFG沿射线FC向右平移,当点F和点D重合时停止移动,若△EFG 与长方形重叠部分的面积是4cm2,则△EFG向右平移了3cm.【考点】平移的性质;等腰直角三角形.【分析】首先判断出平移△EFG经过长方形ABCD对角线的交点时,重叠面积是长方形的面积的一半即面积为4cm2,然后求出平移的距离.【解答】解:∵长方形AB=2cm,AD=4cm,∴长方形的面积为8cm2,∵△EFG与长方形重叠部分的面积是4cm2,∴△EFG边DE经过长方形ABCD对角线的交点,∵FG=4,CD=2,∴(FG+CD)=3,∴△EFG向右平移了3cm,故答案为3.20.已知实数a,b,c满足a+b=ab=c,有下列结论:①若c≠0,则=﹣;②若a=3,则b+c=9;③若c≠0,则(1﹣a)(1﹣b)=+;④若c=5,则a2+b2=15.其中正确的是①③④(把所有正确结论的序号都填上).【考点】分式的混合运算;实数的运算.【分析】①由题意可知:a+b=ab=c≠0,将原式变形后将a+b整体代入即可求出答案.②由题意可知:a+b=ab=3,联立方程后,可得出一个一元二次方程,由于△<0,所以a、b无解,③分别计算(1﹣a)(1﹣b)和+.④由于a+b=ab=5,联立方程可知△>0,所以由完全平方公式即可求出a2+b2的值.【解答】解:①∵c≠0,∴ab≠0∵a+b=ab,∴原式====﹣故①正确;②∵c=3,∴ab=3,∴a+b=3,∴联立化简可得:b2﹣3b+3=0,∵△<0,∴该方程无解,c=3时,a、b无解,故②错误;③∵c≠0,∴ab≠0,∵a+b=ab∴(1﹣a)(1﹣b)=1﹣b﹣a+ab=1,==1,∴(1﹣a)(1﹣b)=+,故③正确;④∵c=5,∴a+b=ab=5,联立,化简可得:b2﹣5b+5=0,∵△>0,∴a2+b2=(a+b)2﹣2ab=15,故④正确故答案为:①③④三、解答题(共50分)21.计算下列各题(1)(﹣3)2+(π+)0﹣(﹣)﹣2(2)(2x﹣1)2﹣(x﹣1)(4x+3)【考点】多项式乘多项式;实数的运算;完全平方公式;零指数幂;负整数指数幂.【分析】(1)原式利用乘方的意义,零指数幂、负整数指数幂法则计算即可得到结果;(2)原式利用完全平方公式,以及多项式乘以多项式法则计算,去括号合并即可得到结果.【解答】解:(1)原式=9+1﹣4=6;(2)原式=4x2﹣4x+1﹣4x2﹣3x+4x+3=﹣3x+4.22.解方程(组)(1)(2)﹣=2.【考点】解分式方程;解二元一次方程组.【分析】(1)方程组利用加减消元法求出解即可;(2)分式方程变形后,去分母转化为整式方程,求出整式方程的解得到x的值,经检验即可得到分式方程的解.【解答】解:(1),②×7﹣①得:19x=﹣19,即x=﹣1,把x=﹣1代入①得:y=1,则方程组的解为;(2)去分母得:x+2=4x﹣2,解得:x=,经检验x=是分式方程的解.23.分解因式(1)2x2﹣8(2)3x2y﹣6xy2+3y3.【考点】提公因式法与公式法的综合运用.【分析】(1)首先提取公因式2,进而利用平方差公式分解因式得出答案;(2)首先提取公因式3y,进而利用完全平方公式分解因式得出答案.【解答】解:(1)2x2﹣8=2(x2﹣4)=2(x+2)(x﹣2);(2)3x2y﹣6xy2+3y3=3y(x2﹣2xy+y2)=3y(x﹣y)2.24.如图,已知∠A=∠C,AD⊥BE,BC⊥BE,点E,D,C在同一条直线上.(1)判断AB与CD的位置关系,并说明理由.(2)若∠ABC=120°,求∠BEC的度数.【考点】平行线的判定与性质;垂线.【分析】(1)先根据AD⊥BE,BC⊥BE得出AD∥BC,故可得出∠ADE=∠C,再由∠A=∠C得出∠ADE=∠A,故可得出结论;(2)由AB∥CD得出∠C的度数,再由直角三角形的性质可得出结论.【解答】解:(1)AB∥CD.理由:∵AD⊥BE,BC⊥BE,∴AD∥BC,∴∠ADE=∠C.∵∠A=∠C,∴∠ADE=∠A,∴AB∥CD;(2)∵AB∥CD,∠ABC=120°,∴∠C=180°﹣120°=60°,∴∠BEC=90°﹣60°=30°.25.某学校为了解七年级男生体质健康情况,随机抽取若干名男生进行测试,测试结果分为优秀、良好、合格、不合格四个等级,统计整理数据并绘制图1、图2两幅不完整的统计图,请根据图中信息回答下列问题:(1)本次接收随机抽样调查的男生人数为40人,扇形统计图中“良好”所对应的圆心角的度数为162°;(2)补全条形统计图中“优秀”的空缺部分;(3)若该校七年级共有男生480人,请估计全年级男生体质健康状况达到“良好”的人数.【考点】条形统计图;用样本估计总体;扇形统计图.【分析】(1)合格人数除以所占的百分比即可得出所调查的男生总人数,用良好的人数除以总人数再乘以360°即可得出“良好”所对应的圆心角的度数;(2)用40﹣2﹣8﹣18即可;(3)用480乘以良好所占的百分比即可.【解答】解:(1)8÷20%=40(人),18÷40×360°=162°;(2)“优秀”的人数=40﹣2﹣8﹣18=12,如图,(3)“良好”的男生人数:×480=216(人),答:全年级男生体质健康状况达到“良好”的人数为216人.26.为了创建国家卫生城市,需要购买甲、乙(如图)两种类型的分类垃圾桶替换原来的垃圾桶,A ,B ,C 三个小区所购买的数量和总价如表所示.(1)问甲型垃圾桶、乙型垃圾桶的单价分别是每套多少元?(2)求a ,b 的值.【考点】二元一次方程组的应用.【分析】(1)设甲型垃圾桶的单价是x 元/套,乙型垃圾桶的单价是y 元/套.根据图表中的甲型、乙型垃圾桶的数量和它们的总价列出方程组并解答.(2)根据图表中的数据列出关于a、b的二元一次方程,结合a、b的取值范围来求它们的值即可.【解答】解:(1)设甲型垃圾桶的单价是x元/套,乙型垃圾桶的单价是y元/套.依题意得:,解得.答:甲型垃圾桶的单价是140元/套,乙型垃圾桶的单价是240元/套.(2)由题意得:140a+240b=2580,整理,得7a+12b=129,因为a、b都是正整数,所以或.四、附加题(每小题10分,共20分)27.已知:直线a∥b,点A,B分别是a,b上的点,APB是a,b之间的一条折弦,且∠APN<90°,Q是a,b之间且在折线APB左侧的一点,如图.(1)若∠1=33°,∠APB=74°,则∠2=41度.(2)若∠Q的一边与PA平行,另一边与PB平行,请探究∠Q,∠1,2间满足的数量关系并说明理由.(3)若∠Q的一边与PA垂直,另一边与PB平行,请直接写出∠Q,∠1,2之间满足的数量关系.【考点】平行线的性质.【分析】(1)图1,过P作PC∥直线a,根据平行线的性质得到∠1=∠APC,∠2=∠BPC,于是得到结论;(2)如图2,由已知条件得到四边形MQNP是平行四边形,根据平行四边形的性质得到∠MQN=∠P=∠1+∠2,根据平角的定义即可得到结论;(3)由垂直的定义得到∠QEP=90°,由平行线的性质得到∠QFE=∠P,根据平角的定义得到结论.【解答】解:(1)图1,过P作PC∥直线a,∴PC∥b,∴∠1=∠APC,∠2=∠BPC,∴∠2=∠APB﹣∠1=41°;故答案为:41;(2)如图2,∵QM∥PB,QN∥PA,∴四边形MQNP是平行四边形,∴∠MQN=∠P=∠1+∠2,∴∠EQN=180°﹣∠MQM=180°﹣∠1﹣∠2;即∠Q=∠1+∠2=180°﹣∠1﹣∠2;(3)∵QE⊥AP,∴∠QEP=90°,∵QF∥PB,∴∠QFE=∠P,∴∠EQF=90°﹣∠QFE=90°﹣∠1﹣∠2,∴∠EQG=180°﹣∠EQF=90°+∠1+∠2.28.教科书中这样写道:“我们把多项式a2+2ab+b2及a2﹣2ab+b2叫做完全平方式”,如果一个多项式不是完全平方式,我们常做如下变形:先添加一个适当的项,使式子中出现完全平方式,再减去这个项,使整个式子的值不变,这种方法叫做配方法.配方法是一种重要的解决问题的数学方法,不仅可以将一个看似不能分解的多项式分解因式,还能解决一些与非负数有关的问题或求代数式最大值,最小值等.例如:分解因式x2+2x﹣3=(x2+2x+1)﹣4=(x+1)2﹣4=(x+1+2)(x+1﹣2)=(x+3)(x﹣1);例如求代数式2x2+4x﹣6的最小值.2x2+4x﹣6=2(x2+2x﹣3)=2(x+1)2﹣8.可知当x=﹣1时,2x2+4x﹣6有最小值,最小值是﹣8,根据阅读材料用配方法解决下列问题:(1)分解因式:m2﹣4m﹣5=(m+1)(m﹣5).(2)当a,b为何值时,多项式a2+b2﹣4a+6b+18有最小值,并求出这个最小值.(3)当a,b为何值时,多项式a2﹣2ab+2b2﹣2a﹣4b+27有最小值,并求出这个最小值.【考点】因式分解的应用;非负数的性质:偶次方.【分析】(1)根据阅读材料,先将m2﹣4m﹣5变形为m2﹣4m+4﹣9,再根据完全平方公式写成(m﹣2)2﹣9,然后利用平方差公式分解即可;(2)利用配方法将多项式a2+b2﹣4a+6b+18转化为(a﹣2)2+(b+3)2+5,然后利用非负数的性质进行解答;(3)利用配方法将多项式a2﹣2ab+2b2﹣2a﹣4b+27转化为(a﹣b﹣1)2+(b﹣3)2+17,然后利用非负数的性质进行解答.【解答】解:(1)m2﹣4m﹣5=m2﹣4m+4﹣9=(m﹣2)2﹣9=(m﹣2+3)(m﹣2﹣3)=(m+1)(m﹣5).故答案为(m+1)(m﹣5);(2)∵a2+b2﹣4a+6b+18=(a﹣2)2+(b+3)2+5,∴当a=2,b=﹣3时,多项式a2+b2﹣4a+6b+18有最小值5;(3)∵a2﹣2ab+2b2﹣2a﹣4b+27=a2﹣2a(b+1)+(b+1)2+(b﹣3)2+17=(a﹣b﹣1)2+(b﹣3)2+17,∴当a=4,b=3时,多项式a2﹣2ab+2b2﹣2a﹣4b+27有最小值17.2017年4月18日。

2017-2018学年浙江省杭州市七年级(下)期中数学试卷(解析版)

2017-2018学年浙江省杭州市七年级(下)期中数学试卷(解析版)

2017-2018学年浙江省杭州市七年级(下)期中数学试卷一、选择题(本大题共10小题,共30.0分)1.下列各式能用平方差公式计算的是()A. B.C. D.2.下列运算不正确的是()A. B. C. D.3.下列命题中,真命题是()A. 相等的角是对顶角B. 两条直线被第三条直线所截,同位角相等C. 在同一平面内,垂直于同一条直线的两条直线平行D. 同旁内角互补4.若方程x|a|-1+(a-2)y=3是二元一次方程,则a的取值范围是()A. B. C. D.5.如图,下列能判定AB∥CD的条件有()个.(1)∠B+∠BCD=180°;(2)∠1=∠2;(3)∠3=∠4;(4)∠B=∠5.A. 1B. 2C. 3D. 46.方程组的解为,则被遮盖的两个数分别为()A. 2,1B. 2,3C. 5,1D. 2,47.下列各式由左边到右边的变形中,是分解因式的为()A. B.C. D.8.已知多项式与的乘积中不含项,则常数的值是()A. B. 1 C. 2 D.9.若(1-x)1-3x=1,则x的取值有()个.A. 0个B. 1个C. 2个D. 3个10.如图,把△ABC纸片沿DE折叠,当点A落在四边形BCDE内部时,则∠A与∠1+∠2之间有一种数量关系始终保持不变,请试着找一找这个规律,这个规律是()A. B.C. D.二、填空题(本大题共6小题,共24.0分)11.0.000000017用科学记数法表示:______ .12.计算:3a3•a2-2a7÷a2=______.13.多项式2a2b3+6ab2的公因式是______ .14.如果a3-x b3与-a x+1b x+y是同类项,那么xy= ______ .15.若a+=7,则a2+= ______ .16.如图,若开始输入的x的值为正整数,最后输出的结果为144,则满足条件的x的值为______.三、计算题(本大题共3小题,共26.0分)17.解下列方程组①②.18.已知|x-3|和(y-2)2互为相反数,先化简,并求值(x-2y)2-(x-y)(x+y)19.(1)已知4m=a,8n=b,用含a,b的式子表示下列代数式:①求:22m+3n的值②求:24m-6n的值(2)已知2×8x×16=223,求x的值.四、解答题(本大题共4小题,共40.0分)20.计算:(1)计算:(-2016)0+()-2+(-3)3;(2)简算:982-97×99.21.如图,∠1+∠2=180°,你能判断∠ADE与∠3之间的大小关系吗?请说明理由.22.某工厂承接了一批纸箱加工任务,用如图1所示的长方形和正方形纸板(长方形的宽与正方形的边长相等)加工成如图所示的竖式与横式两种无盖的长方形纸箱.(加工时接缝材料不计)(1)若该厂购进正方形纸板1000张,长方形纸板2000张.问竖式纸盒,横式纸盒各加工多少个,恰好能将购进的纸板全部用完;(2)该工厂某一天使用的材料清单上显示,这天一共使用正方形纸板50张,长方形纸板a张,全部加工成上述两种纸盒,且120<a<136,试求在这一天加工两种纸盒时,a的所有可能值.23.如图①,E是直线AB,CD内部一点,AB∥CD,连接EA,ED.(1)探究猜想:①若∠A=20°,∠D=40°,则∠AED= ______ °②猜想图①中∠AED,∠EAB,∠EDC的关系,并用两种不同的方法证明你的结论.(2)拓展应用:如图②,射线FE与l1,l2交于分别交于点E、F,AB∥CD,a,b,c,d分别是被射线FE隔开的4个区域(不含边界,其中区域a,b位于直线AB上方,P是位于以上四个区域上的点,猜想:∠PEB,∠PFC,∠EPF的关系(任写出两种,可直接写答案).答案和解析1.【答案】C【解析】【分析】本题考查了平方差公式,能熟记平方差公式的特点是解此题的关键.平方差公式为(a+b)(a-b)=a2-b2,根据平方差公式逐个判断即可.【解答】解:A.不能用平方差公式,故本选项不符合题意;B.不能用平方差公式,故本选项不符合题意;C.能用平方差公式,故本选项符合题意;D.不能用平方差公式,故本选项不符合题意;故选C.2.【答案】C【解析】解:A、a2•a3=a5,正确,不合题意;B、(-a)4=a4,正确,不合题意;C、a2+a3无法计算,故此选项错误,符合题意;D、(a2)3=a6,正确,不合题意;故选:C.直接利用同底数幂的乘法运算法则以及幂的乘方运算法则、积的乘方运算法则、合并同类项法则分别化简得出答案.此题主要考查了同底数幂的乘法运算以及幂的乘方运算、积的乘方运算、合并同类项等知识,正确掌握运算法则是解题关键.3.【答案】C【解析】【分析】分析是否为真命题,需要分别分析各题设是否能推出结论,从而利用排除法得出答案.主要考查命题的真假判断,正确的命题叫真命题,错误的命题叫做假命题.判断命题的真假关键是要熟悉课本中的性质定理.【解答】解:A、错误,对顶角相等但相等的角不一定是对顶角;B、错误,当被截的直线平行时形成的同位角才相等;C、正确,必须强调在同一平面内;D、错误,两直线平行同旁内角才互补.故选C.4.【答案】C【解析】【分析】本题考查二元一次方程的定义,二元一次方程必须符合以下三个条件:(1)方程中只含有2个未知数;(2)含未知数项的最高次数为一次;(3)方程是整式方程.根据二元一次方程的定义,从二元一次方程的未知数的个数和次数方面确定a的取值.【解答】解:根据二元一次方程的定义,得|a|-1=1且a-2≠0,解得a=-2.故选C.5.【答案】C【解析】【分析】本题主要考查平行线的判定定理.在复杂的图形中具有相等关系或互补关系的两角首先要判断它们是否是同位角、内错角或同旁内角,被判断平行的两直线是否由“三线八角”而产生的被截直线.正确识别“三线八角”中的同位角、内错角、同旁内角是正确答题的关键,只有同位角相等、内错角相等、同旁内角互补,才能推出两直线平行.【解答】解:(1)利用同旁内角互补判定两直线平行,故(1)正确;(2)利用内错角相等判定两直线平行,∵∠1=∠2,∴AD∥BC,而不能判定AB∥CD,故(2)错误;(3)利用内错角相等判定两直线平行,故(3)正确;(4)利用同位角相等判定两直线平行,故(4)正确.∴正确的为(1)、(3)、(4),共3个;故选C.6.【答案】C【解析】解:把x=2代入x+y=3得:y=1,把x=2,y=1代入得:2x+y=4+1=5,则被遮盖的两个数分别为5,1,故选C把x=2代入方程组第二个方程求出y的值,再将x与y的值代入第一个方程左边求出所求即可.此题考查了二元一次方程组的解,方程组的解即为能使方程组中两方程都成立的未知数的值.7.【答案】C【解析】解:A、是多项式乘法,故A选项错误;B、右边不是积的形式,x2-4x+4=(x-2)2,故B选项错误;C、提公因式法,故C选项正确;D、右边不是积的形式,故D选项错误;故选:C.根据分解因式就是把一个多项式化为几个整式的积的形式,利用排除法求解.这类问题的关键在于能否正确应用分解因式的定义来判断.8.【答案】C【解析】解:(x-a)(x2+2x-1)=x3+2x2-x-ax2-2ax+a=x3+2x2-ax2-x-2ax+a=x3+(2-a)x2-x-2ax+a令2-a=0,∴a=2故选:C.先计算(x-a)(x2+2x-1),然后将含x2的项进行合并,最后令其系数为0即可求出a 的值.本题考查多项式乘以多项式,解题的关键是熟练运用运算法则,本题属于基础题型.9.【答案】C【解析】解:∵(1-x)1-3x=1,∴当1-3x=0时,原式=1,当x=0时,原式=1,故x的取值有2个.故选:C.直接利用零指数幂的性质以及有理数的乘方运算法则得出答案.此题主要考查了零指数幂的性质以及有理数的乘方运算,正确掌握运算法则是解题关键.10.【答案】C【解析】解:由题意可知:∠AED+∠ADE=180°-∠A,∠B+∠C=180°-∠A∵∠AED+∠ADE+∠1+∠2+∠B+∠C=360°,∴360°-2∠A+∠1+∠2=360°,∴2∠A=∠1+∠2,故选(C)根据三角形的内角和定理,以及四边形的内角和定理即可求出答案.本题考查三角形的定理,解题的关键是熟练运用三角形内角和定理,本题属于中等题型.11.【答案】1.7×10-8【解析】解:0.000000017=1.7×10-8,故答案为:1.7×10-8.绝对值小于1的正数也可以利用科学记数法表示,一般形式为a×10-n,与较大数的科学记数法不同的是其所使用的是负指数幂,指数由原数左边起第一个不为零的数字前面的0的个数所决定.本题考查用科学记数法表示较小的数,一般形式为a×10-n,其中1≤|a|<10,n为由原数左边起第一个不为零的数字前面的0的个数所决定.12.【答案】a5【解析】解:3a3•a2-2a7÷a2=3a5-2a5=a5故答案为:a5.根据整式的混合运算顺序,首先计算乘法和除法,然后计算减法,即可求出算式3a3•a2-2a7÷a2的值是多少.(1)此题主要考查了整式的混合运算,要熟练掌握,解答此题的关键是要明确:有乘方、乘除的混合运算中,要按照先乘方后乘除的顺序运算,其运算顺序和有理数的混合运算顺序相似.(2)此题还考查了同底数幂的乘法法则:同底数幂相乘,底数不变,指数相加,要熟练掌握,解答此题的关键是要明确:①底数必须相同;②按照运算性质,只有相乘时才是底数不变,指数相加.(3)此题还考查了同底数幂的除法法则:同底数幂相除,底数不变,指数相减,要熟练掌握,解答此题的关键是要明确:①底数a≠0,因为0不能做除数;②单独的一个字母,其指数是1,而不是0;③应用同底数幂除法的法则时,底数a可是单项式,也可以是多项式,但必须明确底数是什么,指数是什么.13.【答案】2ab2【解析】解:多项式2a2b3+6ab2的公因式是2ab2.故答案为:2ab2.根据确定多项式中各项的公因式,可概括为三“定”:①定系数,即确定各项系数的最大公约数;②定字母,即确定各项的相同字母因式(或相同多项式因式);③定指数,即各项相同字母因式(或相同多项式因式)的指数的最低次幂找出公因式即可.此题主要考查了找公因式,关键是掌握找公因式的方法.14.【答案】2【解析】解:∵a3-x b3与-a x+1b x+y是同类项,∴,解得,则xy=1×2=2.故答案是:2.根据同类项的概念求解.本题主要考查了同类项,解题的关键是熟记同类项的定义.15.【答案】47【解析】解:∵,∴(a+)2=49,即a2+2+=49,∴a2+=47;故答案是:47.将已知等式的两边完全平方后求得的值即可.本题主要考查完全平方公式,熟记公式的几个变形公式对解题大有帮助.16.【答案】29或6【解析】解:第一个数就是直接输出其结果的:5x-1=144,解得:x=29,第二个数是(5x-1)×5-1=144解得:x=6;第三个数是:5[5(5x-1)-1]-1=144,解得:x=1.4(不合题意舍去),第四个数是5{5[5(5x-1)-1]-1}-1=144,解得:x=(不合题意舍去)∴满足条件所有x的值是29或6.故答案为:29或6.利用逆向思维来做,分析第一个数就是直接输出144,可得方程5x-1=144,解方程即可求得第一个数,再求得输出为这个数的第二个数,以此类推即可求得所有答案.此题考查了方程与不等式的应用.注意理解题意与逆向思维的应用是解题的关键.17.【答案】解:①,①×3+②×2得:13x=52,解得:x=4,把x=4代入①得:y=3,则方程组的解为;②方程组整理得:,②×2-①得:7y=42,解得:y=6,把y=6代入②得:x=18,则方程组的解为.【解析】①方程组利用加减消元法求出解即可;②方程组整理后,利用加减消元法求出解即可.此题考查了解二元一次方程组,利用了消元的思想,消元的方法有:代入消元法与加减消元法.18.【答案】解:由题意得:|x-3|+(y-2)2=0,可得x-3=0,y-2=0,解得:x=3,y=2,则原式=x2-4xy+4y2-x2+y2=-4xy+5y2=-24+20=-4.【解析】利用相反数性质列出关系式,再利用非负数的性质求出x与y的值,原式化简后代入计算即可求出值.此题考查了整式的混合运算-化简求值,以及非负数的性质,熟练掌握公式及法则是解本题的关键.19.【答案】解:(1)∵4m=a,8n=b,∴22m=a,23n=b,①22m+3n=22m•23n=ab;②24m-6n=24m÷26n=(22m)2÷(23n)2=;(2)∵2×8x×16=223,∴2×(23)x×24=223,∴2×23x×24=223,∴1+3x+4=23,解得:x=6.【解析】(1)分别将4m,8n化为底数为2的形式,然后代入①②求解;(2)将8x化为23x,将16化为24,列出方程求出x的值.本题考查了同底数幂的除法以及幂的乘方和积的乘方,掌握运算法则是解答本题的关键.20.【答案】解:(1)原式=1+4-27=-22;(2)原式=1982-(98-1)(98+1)=982-(982-1)=1;【解析】(1)利用幂的有关运算性质计算即可确定正确的选项;(2)直接利用平方差公式进行计算即可.本题考查了平方差公式及幂的有关运算性质,解题的关键是能够了解这些基本知识,难度不大.21.【答案】解:∠3=∠ADE.理由:∵∠1+∠2=180°,∠1+∠4=180°∴∠2=∠4.∴BD∥FE.∴∠3=∠ADE.【解析】先根据题意得出BD∥FE,再由平行线的性质即可得出结论.本题考查的是平行线的判定与性质,熟知平行线的判定定理是解答此题的关键.22.【答案】(1)设加工竖式纸盒x个,加工横式纸盒y个,根据题意得:,解得:.答:加工竖式纸盒200个,加工横式纸盒400个.(2)设加工竖式纸盒m个,加工横式纸盒n个,根据题意得:,∴n=40-.∵n、a为正整数,∴a为5的倍数,又∵120<a<136,∴满足条件的a为:125,130,135.【解析】(1)设加工竖式纸盒x个,加工横式纸盒y个,根据两种纸盒每个各需长方形和正方形纸板的张数结合共用正方形纸板1000张、长方形纸板2000张,即可得出关于x、y的二元一次方程组,解之即可得出结论;(2)设加工竖式纸盒m个,加工横式纸盒n个,根据两种纸盒每个各需长方形和正方形纸板的张数结合共用正方形纸板50张、长方形纸板a张,即可得出关于m、n 的二元一次方程组,解之即可用含a的代数式表示出n值,再根据n、a为正整数结合120<a<136即可求出a的值,此题得解.本题考查了二元一次方程组的应用以及二元一次方程的应用,解题的关键是:(1)根据两种纸盒每个各需长方形和正方形纸板的张数结合长、正方形纸板的张数列出关于x、y的二元一次方程组;(2)通过解二元一次方程组用含a的代数式表示出n值.23.【答案】60【解析】解:(1)①过E作EF∥AB,∵AB∥CD,∴AB∥EF∥CD,∴∠A=∠AEF=20°,∠D=∠DEF=40°,∴∠AED=∠AEF+∠DEF=∠A+∠D=60°,故答案为:60;②∠AED=∠A+∠D,证明:方法一、延长DE交AB于F,如图1,∵AB∥CD,∴∠DFA=∠D,∴∠AED=∠A+∠DFA;方法二、过E作EF∥AB,如图2,∵AB∥CD,∴AB∥EF∥CD,∴∠A=∠AEF,∠D=∠DEF,∴∠AED=∠AEF+∠DEF=∠A+∠D;(2)当P在a区域时,如图3,∠PEB=∠PFC+∠EPF;当P点在b区域时,如图4,∠PFC=∠PEB+∠EPF;当P点在区域c时,如图5,∠EPF+∠PEB+∠PFC=360°;当P点在区域d时,如图6,∠EPF=∠PEB+∠PFC.(1)①过E作EF∥AB,根据AB∥CD,可得AB∥EF∥CD,再根据两直线平行,内错角相等进行计算即可;②作辅助线构造内错角,依据两直线平行,内错角相等或三角形外角性质,进行计算即可;(2)根据a,b,c,d分别是被射线FE隔开的4个区域,P是位于四个区域上的点,画出对应的图形,进而得出结论.本题主要考查了平行线的性质,以及三角形外角性质,解题时注意:两条平行线被第三条直线所截,内错角相等.简单说成:两直线平行,内错角相等.。

2018学年浙江省杭州市下城区第二学期期末七年级数学考试试卷及详解

2018学年浙江省杭州市下城区第二学期期末七年级数学考试试卷及详解

2018学年下城区第二学期期末七年级考试试卷数学各位同学:1.本试卷满分120分,考试时间为100分钟。

2.答题前,必须在答题纸指定位置填写学校、姓名、座位号和准考证号。

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,答题方式详见答题纸上的说明。

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(本大题有10个小题,每小题3分,共30分)。

在每小题给出的选项中,只有一项是符合题目要求的。

1.若32⨯3x=36,则x=()(A)4(B)5(C)6(D)7【答案】A【解析】同底数幂相乘,底数不变,指数相加2+x=6x=4故选:A2.下列是二元一次方程的是()(A)x+1y=2(B)xy=2(C)x+y=2(D)x2+y2=2【答案】Cx【解析】二元一次方程要有两个未知数,未知数最高次数为 1。

故选 C.3. 在“生命安全”主题教育活动中,为了解甲、乙、丙、丁四所学校学生对生命安全知识掌握情况,小丽制定了如下方案,你认为最合理的是()(A )抽取甲校初二年级学生进行调查(B )在乙校随机抽取 200 名学生进行调查(C )随机抽取甲乙两校 100 名老师进行调查(D )在甲乙学校各随机抽取 100 名学生进行调査【答案】D4、下列因式分解正确的是()(A )(B )x 2 + 9 = ( x + 3)( x - 3)x 2 + x - 6 = (x - 2)( + 3)(C ) 3x - 6 y + 3 = 3(x - 2 y )(D )x 2 + 2 x - 1 = ( x - 1)2(解答)B5. 若分式 x + 102 x - 6有意义,则 x 的取值范围是( )(A )x ≠3 (B )x =3 (C )x ≠-10 (D )x=-10 【答案】A.(解答)分母不能为 0,则 2x -6≠0,解得:x ≠3.6. 如图,说法正确的是( )(A )∠A = ∠1 是同位角(B )∠A = ∠2 是内错角(C )∠A = ∠3 是同旁内角(D )∠A = ∠B 是同旁内角x=x=【解析】根据题目可得第一天圆珠笔的单价为60,第二天圆珠笔的单价为x10,由此构成等【答案】D【解析】(A)∠A=∠1是内错角,不对(B)∠A=∠2但不是内错角,不对(C)∠A=∠3是同位角,不对(D)∠A=∠B是同旁内角7.在义卖活动中,小华负责卖一种圆珠笔,第一天小华卖得60元,第二天多卖了10支,卖得75元,设小华第一天卖了x支这种圆珠笔,则下列方程正确的是()(A)60=75x x10(B)6075x10(C)75=x60 x10(D)7560x10【答案】B75x量关系.8.用四个长和宽是a,b(a>b)的长方形拼成面积64的大正方形,中间小正方形的面积是S,()(A)若S=4,则ab=8(B)若S=16,则ab=10(C)若ab=12,则S=16(D)若ab=14,则S=4【答案】C(解答)S=64-4ab∴C对9.多项式(2a+1)x2+bx,其中a,b为常数()(A)若公因式为3x,则a=1(B)若公因式为5x,则a=2(C)若公因式为3x,则a=3k+1(k为整数)(D)若公因式为5x,则a=5k+1(k为整数)【答案】C【解析】公因式为3x,a=3k+1代入得,2a+1=6a+3,∴A错,B错,C对同理D错10.如图,a∥b,设∠1=(3m+10)°,∠4=(7m-30)°,((A)若∠2=∠3,则∠2=(3m-10)°(B)若∠1=∠4,则∠3=(m+30)°(C)若∠1=2∠2=2∠3,则∠2=(3m)°(D)若∠1=∠2=∠3,∠2=(5m-10)°)【答案】D∵a∥b∴∠1+∠3=∠2+∠4若∠2=∠3,则∠1=∠4,∴m=10,得不出∠2和∠3的度数B,C同理若∠1=∠2=∠3,则∠1=∠2=∠3=∠4∴m=10∠1=∠2=∠3=∠4=40°∴D对二.填空题(本大题共6小题,每题4分,共24分)11.一次射击训练中,李磊共射击10发,射中8环的频率是0.4,则射中8环的频数是.【答案】412、计算:3-1÷3=___________.(解答)1 913.分解因式:a3-4a=.【答案】a(a+2)(a-2)(解答)a3-4a a3-4a=a(a2-4)=a(a+2)(a-2).14如图,点E在AD的延长线上,下列四个条件:1.∠1=∠2 2.∠C+∠ABC=180°3.∠C+∠CDE4.∠4=∠3.能判断AB∥CD的是(填序号)x3 = 1的解是 x=b,若 a=b+1,则 x=15 关于 x 的分式方程 3(b3)=03(b3)=0x -3 y = 2(2) - 5 =【答案】1,2【解析】1. ∠1 = ∠2是内错角,内错角 相等,两直线平行2. ∠C + ∠ABC = 180°是同旁内角,同旁内角相加等于180°,则两直线平行a 3 【答案】x = 3【解析】∵.∴ 3a(x3)3(x3)a x3=01 3=0.∵ x = b.∴ 3a(b3).∵ a = b + 1.∴ 3(b+1)(b3). 2b+6=0x = b = 3 .16. 记 a ❈b =(a +b )2-(a -b )2,若 A ❈含有 x ,y 的代数式表示)【答案】(x -2y )2(解答)a ❈b =4ab1 x -2y= ,则 A =___________(用 4 x 2-16y 2 x +2y∴A = x -2y 4÷x +2y 4 x 2-16y 2=(x -2y )2三、解答题(本大题有 7 个,共 66 分)。

七年级下学期期中考试英语试卷.(解析版)

七年级下学期期中考试英语试卷.(解析版)

浙江省杭州市萧山区戴村片2017-2018学年七年级下学期期中考试英语试卷一、听短对话,回答问题。

听下面5段对话,每段对话后有一小题,从题中所给A、B、C三个选项中选出最佳选项,并标在试题相应位置。

1、Which club doesn't the girl talk about?A、The soccer club.B、The English club.C、The swimming club.2、What does Peter have to do after he gets up?A、Make his bed.B、Make breakfast.C、Do the dishes.3、What time does Tom usually go to work?A、7:00.B、7:20.C、7:30.4、What animals does the man like?A、Lions.B、Pandas.C、Elephants.5、What is Sally doing?A、She is listening to music.B、She is playing computer games.C、We don't know.二、听长对话,回答问题。

听下面两段长对话,对话后有几个小题,从题中所给A、B、C三个选项中选出最佳选项。

6、听下面一段对话,回答下列三个小题。

(1)Where is Susan?A、At home.B、In the bookshop.C、In the supermarket.(2)What time is the birthday party?A、At 6:15 p.m.B、At 4:15 p.m.C、At 6:50 p.m.(3)Who will come to the party?A、Only Susan.B、Susan and her sister.C、David and Susan.7、听下面一段对话,回答下列三个小题(1)What animal does the girl like to see first?A、Koalas.B、Pandas.C、Giraffes.(2)Where are the lions from?A、China.B、Africa.C、France.(3)How many kinds of animals do they talk about?A、Two.B、Three.C、Four.三、听独白,回答问题。

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2017-2018学年杭州市下城区七年级(下)语文期末统考卷满分120分, 考试时间120分钟一、语文知识积累(21分)1.阅读下面文段,根据拼音写出词语,并给加点字选择正确读音。

(4 分)2018“浙江好腔调”传统戏剧展演活动杭州专场晚会上,来自杭州各区、县的不同剧种同台展演,演员们“唱、念、做、打”配合mò qì__________ , 展现出了“台上一分钟,台下十年功”的zhuó yuè__________技艺。

现场观众时而屏[A. píng B.bǐng]息凝神、时而忍俊不禁……这是一场网络时代鲜[A. xiǎn B. xiān]有的传统戏剧艺术大餐。

2.下列选项中括号内的表述不正确的一项是 ( )(3 分)A孤岂欲卿治经为博土..邪(此句选文出自北宋司马光主持编纂的《资治通鉴》;“博士”指专掌经学传授的学官,不能译为“博学之士”)B.尔辈不能究物理(此句选文出自《阅微草堂笔记》,作者为清代文学家纪昀,即纪晓岚;“物理”指事物的道理、规律,今义“物理”已成为一门学科)C“愿为市鞍马”“东市买骏马”(诗句描写的主人公是女扮男装代父从军的木兰;句中两个“市”字,前为动词“买”,后为名词“集市、市场”)D.“无丝竹之乱耳””何陋之有"《“之”有时充当代词;有时相当于助词“的" ;有时用在主语和谓语之间,取消句子独立性,如句中加点的两个“之”字)3.一个句子往往由多个短语组合而成。

请从下面句子中各找出一个并列短语、偏正短语和动宾短语。

(3 分)古诗文中作者常常借景物描写寄寓情思、抒发感悟,所以我们能够在山川溪泉中听见回荡的心声,在花草树木间发现人生的影子。

并列短语:__________偏正短语:__________动宾短语:__________4.古诗文内容填空。

(8分)(1)朔气传金柝__________________。

(《木兰诗》)(2)可怜夜半虚前席,__________________。

(李商隐《(贾生》)(3)__________________,惟解漫天作雪飞。

(韩愈《晚春》)(4)__________________,丰年留客足鸡豚。

(陆游《游山西村》(5)“欲穷千里目,更上一层楼",站得高才能望得远,杜甫望岳》王安石《登飞来峰》和杨万里《过松源晨炊漆公店》(其五)中能表达此意的诗句是:__________________,__________________。

(6)刘禹锡《陋室铭》- -文.除了正面描写“陋室”外,还用“__________________,__________________”两个古代名贤的居室相类比,突出陋室主人之“德馨”。

5.下面是同学作文中的一段话,在表达上有不顺畅和不简明的地方,请加以整体修改。

(3分)_______________________________________________________________________________________ _______________________________________________________________________________________ 二、文学作品阅读(34分)(一)名著阅读(20分)6.在《海底两万里)第四章中“我”和尼德▪兰(内德▪兰德)围绕“那怪物是不是巨型独角鲸”展开了辩论,阅读F面两段话回答问题。

(4 分)[A]"一般人可以去相信有奇异的非星穿过宇宙,有古老的怪物居住在地球的内部,可天文学家、地质学家就不会接受这类荒诞不经的说法。

……无论这些鯨类动物具有多强的攻击力,无论它们是用尾巴还是用牙齿,它们都绝对不可能毁环轮船的钢板的。

”[B]“章鱼是一种软体动物,从这个名称看,它的肌肉就不坚硬。

它不属于脊椎动物,就算它有五百尺长,它也无法对“斯科蒂亚’号或“亚伯拉罕▪林肯’号这类船只造成危害的。

因此,把这么大的事归之于斯堪的纳维亚海怪或其他类似的怪物干的,那纯粹是天方夜谭。

”(1)[A]EB]两段话分别出自谁之口? [A]:_________ [B]_________(2分)(2)在“我”眼里,尼德▪兰(内德▪兰德)是一个怎样的人? (根据全书内容概括回答)(2分)_______________________________________________________________________________________《骆驼祥子》(节选)老舍①入了秋,祥子的病已不允许他再拉车,祥子的信用已丧失得赁不出车来。

他作了小店的照顾主儿。

夜间,有两个铜板,便可以在店中躺下。

白天,他去作些只能使他喝碗粥的劳作。

他不能在街上去乞讨,那么大的个子,没有人肯对他发善心。

他不会在身上作些彩,去到庙会上乞钱,因为没受过传授,不晓得怎么把他身上的疮化装成动人的不幸。

作贼,他也没那套本事,贼人也有团体与门路啊。

只有他自己会给自己挣饭吃,没有任何别的依赖与援助。

他为自己努力,也为自己完成了死亡。

他等着吸那最后的一口气,他是个还有口气的死鬼,个人主义是他的灵魂。

这个灵魂将随着他的身体一齐烂化在泥土中。

②北平自从被封为故都,它的排场,手艺,吃食,言语,巡警……已慢慢的向四外流动,去找那与天子有同样威严的人和财力的地方去助威。

那洋化的青岛也有了北平的涮羊肉;那热闹的天津在半夜里也可以听到低悲的“硬面——饽饽”;在上海,在汉口,在南京,也都有了说京话的巡警与差役,吃着芝麻酱烧饼;香片茶会由南而北,在北平经过双熏再往南方去;连抬杠的杠夫也有时坐上火车到天津或南京去抬那高官贵人的棺材。

③北平本身可是渐渐的失去原有的排场,点心铺中过了九月九还可以买到花糕,卖元宵的也许在秋天就下了市,那二三百年的老铺户也忽然想起作周年纪念,借此好散出大减价的传单……经济的压迫使排场去另找去路,体面当不了饭吃。

④不过,红白事情在大体上还保存着旧有的仪式与气派,婚丧嫁娶仿佛到底值得注意,而多少要些排场。

婚丧事的执事,响器,喜轿与官罩,到底还不是任何都市所能赶上的。

出殡用的松鹤松狮,纸扎的人物轿马,娶亲用的全份执事,与二十四个响器,依旧在街市上显出官派大样,使人想到那太平年代的繁华与气度。

⑤祥子的生活多半仗着这种残存的仪式与规矩。

有结婚的,他替人家打着旗伞;有出殡的,他替人家举着花圈挽联;他不喜,也不哭,他只为那十几个铜子,陪着人家游街。

穿上杠房或喜轿铺所预备的绿衣或蓝袍,戴上那不合适的黑帽,他暂时能把一身的破布遮住,稍微体面一些。

遇上那大户人家办事,教一干人等都剃头穿靴子,他便有了机会使头上脚下都干净利落一回。

脏病使他迈不开步,正好举着面旗,或两条挽联,在马路边上缓缓的蹭。

⑥可是,连作这点事,他也不算个好手。

他的黄金时代已经过去了,既没从洋车上成家立业,什么事都随着他的希望变成了“那么回事”。

他那么大的个子,偏争着去打一面飞虎旗,或一对短窄的挽联;那较重的红伞与肃静牌等等,他都不肯去动。

和个老人,小孩,甚于至妇女,他也会去争竞。

他不肯吃一点亏。

⑦打着那么个小东西,他低着头,弯着背,口中叼着个由路上拾来的烟卷头儿,有气无力的慢慢的蹭。

大家立定,他也许还走;大家已走,他也许多站一会儿;他似乎听不见那施号发令的锣声。

他更永远不看前后的距离停匀不停匀,左右的队列整齐不整齐,他走他的,低着头象作着个梦,又象思索着点高深的道理。

那穿红衣的锣夫,与拿着绸旗的催押执事,几乎把所有的村话都向他骂去:“孙子!我说你呢,骆驼!你他妈的看齐!”他似乎还没有听见。

打锣的过去给了他一锣锤,他翻了翻眼,朦胧的向四外看一下。

没管打锣的说了什么,他留神的在地上找,看有没有值得拾起来的烟头儿。

⑧体面的,要强的,好梦想的,利己的,个人的,健壮的,伟大的,祥子,不知陪着人家送了多少回殡;不知道何时何地会埋起他自己来,埋起这堕落的,自私的,不幸的,社会病胎里的产儿,个人主义的末路鬼!7.选文是(骆驼祥子)-书的最后几个段落。

第⑥节作者写到“他的黄金时代已经过去了”,根据你对全书的阅读,你认为什么时候算是祥子的“黄金时代”?(4分)_______________________________________________________________________________________ _______________________________________________________________________________________ 8.小说结尾本来交代好祥子的结局就可以了,②③④节为什么要写北平渐渐失去的“排场"? (4 分) ______________________________________________________________________________________________________________________________________________________________________________ 9.仿照某同学对第①节所做的批注(内容见上文图示),请你给第⑦节也写一条批注。

(4分)_______________________________________________________________________________________ _______________________________________________________________________________________ 10. 1945年《骆驼祥子》在美国被译成英文并成为畅销书,译者将祥子悲剧的下场改为大团圆,祥子与小福子都没有死,祥子把小福子从白房子中抢出来了,“夏夜的清凉,他一面跑着,-面觉到怀抱里的身体轻轻动了一-下接着就慢慢地偎近他。

她还活着,他也活着。

他们现在自由了"。

两种结局.你更喜欢哪一种?请阐述你的理由。

(4分)_______________________________________________________________________________________ _______________________________________________________________________________________ _______________________________________________________________________________________(二)送春(14分)宗璞①说起燕园的野花,声势最为浩大的,要属二月兰了。

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