四川省成都市第三中学2021-2022学年七年级下学期4月月考英语试卷
四川省成都市成华区2021-2022学年八年级下学期期末英语试题
四川省成都市成华区2021-2022学年八年级下学期期末英语试题学校:___________姓名：___________班级：___________考号：___________一、单项选择1．Aron Ralston is ________ American man who is interested in mountain climbing. A．the B．a C．an2．But the driver didn’t think about himself. He ________ thought about saving a life. A．hardly B．almost C．only3．—How high is Qomolangma?—It’s 8844.43 meters high. It’s ________ than any other mountain in the world.A．high B．higher C．the highest4．What were you doing last night, Linda? I called at seven and you didn’t ________. A．pick up B．dress up C．set up 5．—Something is wrong with my phone. Can you help me?—Sure. I will show you ________ to use it.A．what B．how C．when6．Look! A couple of boys ________ for you at the door.A．waited B．have waited C．are waiting7．I was waiting for the bus________it began to rain heavily.A．while B．when C．as8．________ is the parents’ job to provide a clean and comfortable environment at home for their children.A．It B．That C．This9．She ________ us since I came to this school.A．has taught B．had taught C．taught10．—Jim, take good care of ________.—Thank you very much.A．yourselves B．himself C．yourself二、补全对话5选5根据对话内容，从选项中选出适当的选项补全对话，答题卡上只需填涂选项的编号字母。
四川省成都市2021-2022学年七年级上学期语文期末试卷(含答案)
四川省成都市2021-2022学年七年级上学期语文期末试卷一、基础知识（每小题3分，共12分）1．下面加点字注音无误的一项是（）A．羞怯．（qiè）攒．成（cuán）贮．蓄（chǔ）怪诞．不经（dàn）B．狭隘．（yì）呈．报（chéng）蜷．伏（quán）咄咄．逼人（duō）C．棱．镜（léng）应和．（hè）莅．临（lì）畏罪潜．逃（qián）D．怅．然（chàng）粗犷．（kuàng）禁锢．（gù）恍．然大悟（huǎng）2．下列词语书写全部正确的一项是（）A．她想让我懂得“杯”是“杯”，“水”是“水”，而我却把两者浑为一谈。
B．暮色中，第一颗星星出现在天空中，悬崖下面的地面开始变得模糊。
C．他不住帐莲，而是住在一座结实的石房子里。
D．我的心在瘦弱的胸腔中砰砰地跳动，我努力往上爬着。
3．下列语句中加点的成语使用不正确的一项是（）A．多穗高粱，成熟期参差不齐．．．．，多次分别收获，很不方便。
B．每个人都要根据他们的能力安排工作，让他们各得其所．．．．。
C．生活是美好的，不能因为一些小小的失败而怨天尤人．．．．。
D．报纸登了一条骇人听闻．．．．的消息，不法商贩用工业酒精制酒而致多人中毒。
4．下列语句没有语病的一项是（）A．为了防止这类事故不再发生，我们必须采取有效措施。
B．随着对阅读能力考查的比重越来越大，使家长们开始重视孩子们阅读兴趣的培养。
C．人类来到这世界就一直面临两种挑战，一是来自人类本身，二是来自大自然。
D．新学期，记者又来到学校采访了许多李老师的事迹。
二、文言文阅读（每小题3分，共12分）阅读下面文言文，完成各题。
一屠晚归，担中肉尽，止有剩骨。
途中两狼，缀行甚远。
屠惧，投以骨。
一狼得骨止，一狼仍从。
复投之，后狼止而前狼又至。
骨已尽矣。
而两狼之并驱如故。
屠大窘，恐前后受其敌。
湖北省武汉市硚口区2021-2022学年七年级下学期期中学业质量检测英语试卷
硚口区2021-2022学年度第二学期期中学业质量检测七年级英语试卷区教研室命制2022. 4. 22第I部分选择题(共80分)一、听力测试(本题共25分，每小题1分)第一节听下面4个问题。
每个问题后有三个答语，从题中所给的A、B、C三个选项中选出最佳选项。
听完每个问题后，你都有5秒钟的时间来作答和阅读下一小题。
每个问题仅读一遍。
1. A. By bike. B. In the morning. C. It’s 7 o’clock.2. A. It’s black. B. With my father. C. About 7: 15.3. A. She’s reading. B. She is Lily. C. She is 13.4. A. It’s strong. B. Africa. C. It’s yellow.第二节听下面8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。
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。
5. What’s wrong with the man?A. He has a bad cough.B. He can’t sleep well.C. He has a fever.6. What will the man do tonight?A. To have a party.B. To go to the concert.C. To have a meal.7. What is in the girl’s hand?A. A cake.B. A dumpling.C. A zongzi.8. Where are the speakers?A. In the library.B. In the restaurant.C. In the hotel.9. How will the man go to New York City?A. By air.B. By train.C. By car.10. Where will the man spend his holiday?A. In the mountains.B. By the river.C. On the sea.11. When does the boy do his homework?A. In the morning.B. In the afternoon.C. In the evening.12. What are the speakers talking about?A. Paintings.B. Animals.C. Zoos.第三节听下面4段对话或独白。
2021-2022学年-有答案-四川省宜宾市叙州区观音片区七年级(上)期中英语试卷
2021-2022学年四川省宜宾市叙州区观音片区七年级（上）期中英语试卷第一节单项选择（共15小题，每小题1分，共15分）请从A. B. C. D 四个选项中选出可以填入空白处的最佳答案．1. ﹣What's this in English？﹣It's __________ ruler．（）A./B.anC.a2. ﹣ Good morning， Gina．﹣_______， Jenny．（）A.How are youB.Good morningC.Nice to meet you3. ﹣ What color is your bag？﹣ __________．（）A.This is a penB.It's blackC.123﹣3214. ﹣ ___________________？﹣ J﹣A﹣C﹣K﹣E﹣T（）A.What's your name？B.Are you Jim？C.How do you spell jacket？5. —Is Alan your friend?—Yes, ______.A.she isB.it isC.he is6. The girl's name is Gina Brown． Gina is her_________．（）A.family namest nameC.first name7. Here is a photo ______ my family.A.inB.onC.of8. If you find my dictionary， please call me _____ 790﹣3215．（）A.atB.toC.on9. ﹣ Excuse me， Is this your schoolbag？﹣ No， it isn't． _________ is in my desk．（）A.MineB.HisC.Hers10. ﹣ Is the man（男士） in the photo your___________？﹣ Yes， he is my father's brother．（）A.fatherB.uncleC.brother11. ﹣ ________ your ID card？﹣ It's on my bed．（）A.WhatB.Where areC.Where's12. ﹣ Are those your brothers？﹣ _________． They are my cousins．（）A.Yes， it isB.Yes， they areC.No， they aren't13. We can see ________ girls in the classroom. They are Anna, Gina, Jenny, Mary.A.threeB.fiveC.fourD.six14. _________ is my pen， __________ are her rulers．（）A.This， thatB.That， ThoseC.These， this15. ﹣ Oh， your room is very tidy（整洁）!﹣ ________．（）A.Yes， it isB.You're welcomeC.Thank you第二节完形填空（共10个小题，每小题10分，共计10分）阅读下面短文，掌握其大意，然后从各小题所给的A、B、C三个选项中选出可以填入相应空白处的最佳选项．Good morning! Nice to （1）_______ you．（2）_______name is Alice Miller and my （3）_______name is Alice． My QQ number （4）_______ 286685333．I have a good friend．（5）_______name is Wang Xiaomei． Her （6）_______ nameis Wang and her first name is Xiaomei, （7）_______is a Chinese girl（中国女孩）． She has a brother, （8）_______name is Wang Xiaolong．（9）_______is 12 years（岁）old． We are （10）_______（1）A.meetB.watchC.it（2）A.HerB.MyC.His（3）stB.familyC.first（4）A.isB.areC.be（5）A.HisB.HerC.Your（6）A.fullB.familyC.first（7）A.heB.sheC.you（8）A.hisB.herC.your（9）A.sheB.heC.we（10）A.friendsB.teachersC./一、根据短文内容，从文后所给的四个选项中选出最佳答案．（共20个小题，每小题10分，共计40分．）Hello, my name is Simon． I am in England with my family． My father's name is Steve． His hair （头发） is black． My mother is Julie and her hair is brown． I have a sister and a brother． My sister's name is Alice, she is 4． My brother's name is Tom and he is 6． I am 13．My grandparents are in England, too． My grandpa is 70 and my grandma is 67． Their telephone number is 229﹣7601． My grandpa likes taking photos （拍照）． He likes taking family photos, my grandma likes books．根据材料内容选择最佳答案．（1）Steve is Simon's________．A. brotherB. grandpaC. fatherD. friend．（2）Who has brown hair？________A. Julie．B. Alice．C. Steve．D. Simon．．（3）How old （几岁） is Simon？________A. 2．B.4C. 6．D. 13．．（4）What's the telephone number of Simon's grandparents？________A. 227﹣9061B. 220﹣7916C. 229﹣7601D. 229﹣0176．（5）Simon's grandma likes________．A. phonesB. booksC. photosD. pens．Tim, Bob, Frank and Linda lost some things．（1）________ lost their pencil boxes．A. Tim and BobB. Frank and LindaC. Tim and LindaD. Bob and Frank．（2）What color is Bob's schoolbag？________A. Yellow．B. Red．C. Green．D. Blue．．（3）There are________ books in Frank's bag．A. twoB. threeC. fourD. five．（4）Which is in Linda's schoolbag？________A. B.C. D.．（5）How many （多少） students lost things this afternoon？________A. One．B. Two．C. Three．D. Four．Hello! My name is Mark Twain． I am in Shanghai, China now． I am a student in a middle school． I like green and blue．I have two friends．They are Luo Min and Tang Jun． Luo Min has a black jacket and she likes it． Tang Jun has no phone, he has a jacket, too． He likes white． He has a white hat and a white pen．（1）Mark________．A. is in BeijingB. is a studentC.likes blackD. has a blue pen．（2）Mark has________ friends．A. twoB.threeC. fourD. five．（3）Luo Min has a________jacket．A. yellowB. greenC.blueD. black．（4）Tang Jun has no________．A. friendB. phoneC. jacketsD. pen．（5）Tang Jun likes________．A. whiteB. greenC.blueD. black．My name is Linda Brown． I'm in Bejing． Peter，Todd， Cathy and Dale are my friends．We are at the same（相同的） school． My friends are nice．根据材料内容判断正（T）误（F）．（1）Linda has（有）five friends．________（2）Peter and Todd are in Beijing．________（3）Todd's last name is Green．________（4）Linda and Cathy have the same last name．________（5）．Dale's phone number is （225）﹣5773．________第四部分口语运用（共5个小题，每题1分，共5分）（1）_______Nice to meet you！________（2）_______Are you Anna？________（3）_______Thank you for your help！________（4）_______What's your brother's name？________（5）_______Who're they？________A． You're welcome．B． They are my grandparents．C． Nice to meet you too!D． Yes， I am．E． Zhang Lin第一节句按要求完成句子（每题2分，每空1分，共10分）你可以向格林女士要你的英语书．You can________ Ms． Green________ your English book．The picture of my family is ________．（对画线部分提问）________is the picture of________ family？Is this your sister？（作否定回答）No，________．Those are oranges．（改为单数句）________ is________ orange．这里有我家的两张全家福．Here________ two________ of my family．第二节短文填空根据句意及提示，从方框中选词并用其适当形式填空．（每题1分，共10分）短文填空根据句意及提示，从方框中选词并用其适当形式填空．Hello，boys and girls． I am an （1）________girl． My name is Lily． I am 12 years old． Now I am（2）________Yi Bin． I can say "你好" in Chinese．My teachers（3）________Ms． Zhang and Mr． Han， Ms． Zhang is our English teacher， she is 35years old． Mr． Han is our Chinese teacher，（4）________ is tall （高）， they are friendly（友好）． I have a （5）________， Kate， we are in the same（相同的） class，thanks for her （6）________．This is （7）________schoolbag，What （8）________is it？ Oh，（9）________ is yellow． I have a clock， it is （10）________the wall（墙）．第四节书面表达（共1小题，满分10分）假如你是Tom，你在学校图书馆拾到了一个蓝色的手表，你的电话号码是495﹣3539．请你代Tom写一则寻物启事，寻找手表的主人．要求：语句通顺答意，注意格式，要点写全．格式2分，每个要点2分．________________________________________参考答案与试题解析2021-2022学年四川省宜宾市叙州区观音片区七年级（上）期中英语试卷第一节单项选择（共15小题，每小题1分，共15分）请从A. B. C. D 四个选项中选出可以填入空白处的最佳答案．1.【答案】C【考点】不定冠词【解析】﹣﹣这个用英语怎么说？﹣﹣它是一把尺子．【解答】答案：C．考查冠词．句意"﹣﹣这个用英语怎么说？﹣﹣它是一把尺子．"．这里泛指一把尺子，不用the．ruler是以辅音音素/r/开头的，用a修饰．故选：C．2.【答案】B【考点】其他情景交际话题【解析】﹣﹣早上好，Gina．﹣﹣早上好，Jenny．【解答】考查交际用语．A你好吗？B早上好．C很高兴认识你．结合语境"早上好，Gina"可知，应该回答"早上好"．故选：B．3.【答案】B【考点】其他情景交际话题【解析】﹣你的书包是什么颜色？﹣它是黑色．【解答】根据题干What color is your bag？可知说话人询问的是书包的颜色．故选：B．4.【答案】C【考点】特殊疑问句【解析】﹣﹣你怎么拼写夹克？﹣﹣J﹣A﹣C﹣K﹣E﹣T．【解答】考查特殊疑问句．A你的名字是什么？B你是吉姆吗？C你怎么拼写夹克？结合回答"J ﹣A﹣C﹣K﹣E﹣T"可知，应该问"你怎么拼写夹克？"故选：C．5.【答案】C【考点】一般疑问句【解析】此题暂无解析【解答】C 考查一般疑问句。
四川省成都市某校2021-2022学年-有答案-九年级上学期11月月考英语试题
四川省成都市某校2021-2022学年九年级上学期11月月考英语试题一、未知1. Do you know ________ woman over there with two red earrings?A.aB.anC.the2. —Excuse me, sir. But your bike gets ________ of my car.—Sorry, I didn't see your car.A.in the wayB.on the wayC.off the way3. —I am afraid the room is too ________ for us to live in.—Yes, I agree with you. It will be so crowded.rgeB.tinyC.great4. For children's ________, those fifteen-year-olds shouldn't be allowed to drive.A.ideaB.chanceC.safety5. —My computer is broken. What should I do?—Ask Mike for help. He can get it and ________ it.A.repairB.repairedC.repairing6. —Do you mean you will join the club?—Yes, I am ________ it. I am interested in all the activities the club provides.A.tired ofB.careful withC.serious about7. —Students shouldn't be allowed to use mobile phones at school.—I ________. Phones can bring much trouble.A.agreeB.disagreeC.don't know8. —Mom, would you allow me to swim in the lake?—________. The lake is too deep!A.Not at allB.No problemC.No way9. My parents always stay ________ and get through all difficulties with me.A.by my sideB.on their ownC.by themselves10. —Is the book Jack's?11. The pink toy truck ________ be Hu's. She doesn't like pink at all.A.mustB.mightC.can't12. —Hi, Sarah. It is surprising to see you here. Are you visiting your friend in our neighborhood?—No, I moved here last week. We are ________ now.A.enemiesB.leadersC.neighbors13. —Why are you in such a hurry?—I am late for class. I am quite sure my head teacher Miss Wang ________ in front of the classroom to wait for me. I have to go really fast.A.can be standingB.must be standingC.can't be standing14. —Grandpa say the movie was ________.—It sounds no surprise to me, because it is not a movie for the old.A.wonderfulB.excitingC.awful15. I am looking for my Chinese book. If you have any idea ________ it might be, please call me.A.whatB.whenC.where16. Little Women ________ by millions of readers, especially the female readers.A.is enjoyedB.is believedC.is said17. Could you ________ the letter ________ Chinese? We need it at the meeting soon.A.divided; intoB.send; toC.translated; into18. Micheal Jackson is called King of Pop, and people all over the world ________ him.A.look straight atB.look up toC.look down upon19. Chinese Kongfu has been learned by more and more foreigners, the ________ of it has risen rapidly these years.A.numberB.popularityC.size20. When we were having a PE class, it started to rain ________, so everyone got all wet.A.all of a suddenB.by mistakeC.without doubtgoing down the Colorado River in a 16-foot boat. The June trip was Bo's first time in a boat. Laurie Roberts said. "Things were fine _____ a 6-foot wave broke in front of us and filled the boat with water. Another big wave caught us from the back and turned the _____ over." Bob was thrown clear, but Laurie and Bo were unable to move out under the boat. "Every time I tried to get out, my head hit the boat." Laurie said. "I hit the _____ of the river several times. I _____ I was drowning(溺水)."Rob picked up the story. "I reached the land and _____ Laurie", he said. "I saw Bo swim out from under the overturned boat. Then he turned around and dived(下潜). Soon he came back up, pilling Laurie by the hair." Laurie, who was _____ and breathless, tried to catch Bo. But the dog stayed out of reach as if knowing _____ of them would drown if Laurie pulled him under. Finally Laurie caught Bo's tail. He pulled her 30 years to the land. Laurie was cut and bleeding, but she was _____."_____ it had not been for Bo, I wouldn't be here," Laurie told everyone at the Dog Hero awards dinner.（1）A.bravelyB.strangelyC.quietly（2）A.untilB.whileC.after（3）A.dogB.waveC.boat（4）A.topB.bottomC.inside（5）A.promisedB.suggestedC.realized（6）A.looked afterB.looked forC.looked at（7）A.angryB.deadC.afraid（8）A.bothB.allC.neither（9）A.dangerousB.hurtC.safe（10）At the age of 16, Julia left school and worked at a restaurant. For many years, she was only interested in making money. Then one day she had a serious car accident which changed her life. "I had a terrible car accident in August 1996. It took me 10 months to recover from the accident. During that time, I realized I wanted to find a more meaningful reason for being here in this world, " said Julia.As soon as she recovered, Julia gave up working at the restaurant and traveled to California. One day she found a big company（公司）wanted to cut down part of a forest. In the forest there were lots of redwood trees. One of the trees was more than 1,000 years old.Then Julia learned a group called Our Earth was trying to save the redwood forest from the company. They decided to find someone to live in a redwood tree and hoped this would stop the company from cutting the trees down. Julia volunteered.Julia lived in the tree for about two years without ever going down. It was cold and wet in a redwood tree. There were even very serious winter storms while Julia was in the tree.Finally the company decided to protect the tree Julia lived in. They agreed never to cut down the big redwood tree or the trees around it. When Julia put her feet on the earth, she began to cry. But she continued to do other things to protect the environment.（1）What happened to Julia when she worked at the restaurant in 1996?A.She had a terrible disease.B.She had a car accident.C.She argued with the guests.D.She lost lots of money.（2）What does the underlined word"recover" mean in Chinese?A.控制B.隐藏C.逃脱D.恢复（3）Why did Julia live in the tree?A.Because she didn't have a house.B.Because she loved to live in the tree.C.To stop the company from cutting it.D.Because she thought it was good for her health.（4）How long did Julie live in the tree?A.For about 10 months.B.For about 16 months.C.For about 20 months.D.For about 24 months.（5）What can we know from the passage?A.We should do something important for others.B.Maybe Julie won't do any volunteer jobs from now on.23. International Radio — What's on Tonight?（1）If you listen to the program from the beginning to the end, it will take ________.A.3 hoursB.less than 4 hoursC.more than 4 hours（2）World News Program will be on ________ tonight.A.onceB.twiceC.three times（3）Tony is very interested in sports. He can turn on the radio at ________.A.20:00B.21:40C.22:40（4）At 20:45 tonight, you will hear ________.A.World News ProgramB.Teen DreamsC.World Business（5）Jane has a problem with her parents, and you can advise her to ________.A.call Aunt Vera for adviceB.call the program What Do You Think?C.listen to teenagers' dream24. The National Football League （NFL） is a professional American football league with 32 teams in． How does one choose which team to support? Some people choose the team of their hometown, or where they now live, or the team that their parents or their parents or their friends follow．A boy student from Oklahoma wrote a letter to each of the owners or presidents of the 32 NFL teams． He would see what answers he got, and then choose his team．Bill was home from school sick． It was the week before Christmas． He was "kind of bored" and needed something to do． So he asked his parents if he could write to every professional football team． Bill wrote the 32 letters by hand．"We weren't quite sure what we could get back． He didn't really have one team that he wanted to hear from, " his mother said: "He just wanted to see what kind of reply he' d get．"A letter to the Carolina Panthers' owner Jerry Richardson was one of those posted． Bill wrote in his letter, "My family and I love football． They are fans of different teams． But I don't have a team to cheer for yet． I am ready to pick an NFL team to cheer on for lifetime!"A few weeks later, Bill's mother was pulling into her driveway when a delivery man arrived with a box from the Panthers． When Bill came home, he excitedly opened the box． Inside he found a signed Carolina Panthers helmet（头盔） as well as a handwritten note from Jerry．The team owner had written to Bill, "We should be honored（光荣的） if our Carolina Panthers became your team． We would make you proud of your joining us．"Bill was overjoyed with what he got． He decided that from then on he would support thehelmet they sent us． It's what they told us．" That is what mattered to Bill and why he chose to become a Panthers' fan．（1）We learn from the passage________．A. friends always choose different teams to support．B. only 32 cities in America have their own football teamsC. some people choose a team to support as their parents doD. football teams are just popular with the people of their hometowns．（2）Bill wanted to choose a football team to support because________．A. NFL was very professionalB. he himself was willing to do itC. his parents expected him to do itD. he was ill and felt bored at school．（3）The result of Bill's letter to the Panthers was that________．A. his mother kept the reply from himB. he got many helmets from 32 teamsC. each team wanted him to be its playerD. he became a fan of the Carolina Panthers．（4）It's clear that________．A. it is proper to be a football fan by ChristmasB. the team owner wrote back to Bill by emailC. the note from the team owner meant a lot to BillD. Bill' s parents would also be fans of the Panthers．（5）The best title for the passage can be________．A. Christmas GiftB. Helpful MotherC. Receiving a HelmetD. Choosing a Team．25. What you said does have a p________, I will try it.26. The lemons are so s________ that I feel my teeth are shaking after I try two pieces.27. Don't worry, we will m________ to finish the task on time although it is difficult.28. Jack has just got his driver's l________, he is allowed to drive a car now.29. He woke up from an u________ sleep, having terrible dreams all night.31. Thanks for your ________(value) advice, which is quite useful for me.32. We are totally against ________(educate) the children in this way. It is bad for their development.33. The bridge________(build) many years ago and it needs rebuilding now.34. He is ________(social) smart, and good at getting all the people around him.35. A: Mike, did you hear anything last night?B: Of course. I heard the（1）. You know it was really windy yesterday.A: No. I mean something unusual.B: Oh, it could be that mouse. It has been in our kitchen for some days.A: No, the little mouse（2） make such a big noise. It seemed that something（3） on the floor.B: Then, what's that?A: I really doubt somebody might get into our home.B: Well, let's go to the balcony(阳台) to have a look.A: OK!(on the balcony)A: Look! Mike, my purse is on the floor. Why is it? I remembered I put it in the drawer, though the drawer was not（4）, because I didn't take the keys at that moment.B: That's where the strange（5） came from.A: Yes. What's next to the book? Oh, the big footprints. They must be from a man!B: A man? You mean a thief（6） our home from the balcony? Oh, no!A: Yes! Look, the windows are all（7）.B: Look into your purse! Is anything（8）?A: Let me see! … Oh my god, every（9） thing was taken away! Nothing is left, from the money to the paper notes I kept in the purse.B: I think we（10） lock the window of the balcony so that the thief can't come in again.A: I agree with you.36. difficult, dishonest, encourage, expect, excuse, fair, fight, look, low, risk, share, seeCheating is nothing new. Most middle school students have seen it happen firsthand. Whether it's learning over to have a look at a neighbor's desk or（1） homework answers between classed. It seems like academic (学术的)（2） has been around since the beginning of the time.The use of technology in the classroom has made cheating simpler and easier to cover up and the new technology has made it（3） for some teachers to set rules than before. "Some teachers actually take points off your grade if you are（4） using your phone during the test by them, but other teachers don't even care if you text in class," said Latin School of Chicago senior Abby Bresler.But technology isn't the only thing that has led to the problem. Increased pressure to achieve at school is another reason."Many students feel that they cannot meet the（5） put on them by adults." Said Denise Pope. When cheating is a popular way to get ahead at school, even honest students would take（6） to do it. "It's cheat or be cheated. If everyone else is doing it and they're not, thenthey're going to suffer." Pope said.To deal with the problem, experts agree that both teachers and students need to work together（7） cheating. David, president of the School for Ethical Education, thinks that it helps to（8） the cheating rate (比例) when teachers value every student in the same way and treat them（9）.Pope said students need to take a serious look at their behavior. "Students have to really think, are they being the person they want to be? Are they being their best self?" Pope said. "And if they're not, they can't use pressure or grades or colleges as the（10）."37.Make time for pleasureEveryone talks about the benefits of taking time out for "simple pleasures"．（1）_______ However， the problem for many of us is that we don't know what makes us happy． When I was in college， my mother gave me some wise advice． She said， "Before you get married and live with another person， you need to spend some time living by yourself． I found that I love to spend hours looking around in bookstores．（2）_______ And every so often， I need moments of pure silence．（3）_______ I had to give up playing the flute （长笛） when I started working and had family responsibilities． Playing my flute seemed selfish when no one else in my family could participate， but three years ago I returned to playing the flute． I regret having ever stopped．（4）_______ They are unique activities that give each of us joy． Certainly there are some common themes， such as being out in nature， doing something creative， or appreciating music and literature ﹣﹣﹣ but beyond that， each of us has to determine what it is that feeds our souls． A simple pleasure for me would be to spend an hour reading a book in my backyard．（5）_______ We are all so different．A． Our simple pleasures are a reflection of who we are．B． I also love to spend an afternoon just walking around the city．C． That same activity， however， would give my husband no pleasure．D． We may feel taking out time for ourselves is boring and a waste of time．E． Even if we know what makes us happy， we might put it aside as life gets busier．F． Depending on how much time you have， it might also be just having a coffee in the garden．G． It means that we will be refreshed and happier if we regularly do some easy﹣to﹣do activities．参考答案与试题解析四川省成都市某校2021-2022学年九年级上学期11月月考英语试题一、未知1.【答案】C【考点】宾语从句代词辨析连接副词【解析】此题暂无解析【解答】略2.【答案】A【考点】形容词的比较级和最高级不定代词代词辨析【解析】此题暂无解析【解答】略3.【答案】B【考点】形容词辨析动词辨析固定搭配【解析】此题暂无解析【解答】略4.【考点】名词辨析形容词辨析普通名词【解析】此题暂无解析【解答】略5.【答案】A【考点】固定搭配情态动词其他动词短语【解析】此题暂无解析【解答】略6.【答案】C【考点】固定搭配形容词辨析动名词【解析】此题暂无解析【解答】略7.【答案】A【考点】情态动词动词辨析副词辨析【解析】此题暂无解析8.【答案】C【考点】其他情景交际话题不定代词提供/寻求帮助和应答【解析】此题暂无解析【解答】略9.【答案】A【考点】形容词辨析动名词主谓一致【解析】此题暂无解析【解答】略10.【答案】B【考点】动词辨析名词辨析常识知识【解析】此题暂无解析【解答】略11.【答案】C【考点】情态动词日常生活类阅读此题暂无解析【解答】略12.【答案】C【考点】形容词辨析日常生活类阅读不定代词【解析】此题暂无解析【解答】略13.【答案】B【考点】固定搭配动词不定式不定代词【解析】此题暂无解析【解答】略14.【答案】C【考点】形容词辨析副词辨析动词辨析【解析】此题暂无解析【解答】略15.【答案】C宾语从句【解析】此题暂无解析【解答】略16.【答案】A【考点】动词辨析各种时态的被动语态主谓一致【解析】此题暂无解析【解答】略17.【答案】C【考点】固定搭配其他动词短语动词不定式【解析】此题暂无解析【解答】略18.【答案】B【考点】固定搭配介词辨析范围介词【解析】此题暂无解析【解答】略19.【考点】名词辨析现在完成时普通名词【解析】此题暂无解析【解答】略20.【答案】A【考点】副词辨析固定搭配动词辨析【解析】此题暂无解析【解答】略21.【答案】AACBCBCACA【考点】固定搭配一般过去时推理判断题【解析】此题暂无解析【解答】（1）略DCDC【考点】记叙文阅读细节理解题人物故事类阅读词义猜测题推理判断题【解析】此题暂无解析【解答】（1）B 细节理解题。
2021-2022学年-有答案-江西省九江市某校七年级(上)第一次月考英语试卷
2021-2022年江西省九江市某校七年级（上）第一次月考英语试卷一、单选题1. This is ______ cup and that is ______ English map.A.a; aB.a; anC.an; anD.an; a2. She is my friend and ______ name is Cindy.A.sheB.heC.herD.his3. —______ you David?—Yes, I ______.A.Are; amB.Are; isC.Is; amD.Is; is4. My name is Alice Brown, so my last name is ______.A.AliceB.BrownC.Alice BrownD.Ms Brown5. —What's three and four?—______.A.FiveB.SixC.Seven6. —______ his ID card number and telephone number?—753 and 370-8046.A.How isB.How areC.What isD.What are7. —Is he John?—______, and he is my English teacher.A.Yes, he isB.Yes, you areC.No, he isn'tD.No, you aren't8. —______?—Yes. T-H-O-M-A-S.A.How are youB.Are you ThomasC.What's this in EnglishD.Can you spell "Thomas"9. —Is your name Grace?—______. My name is Adele.A.Yes, it isB.Yes, I amC.No, it isn'tD.No, I'm not10. —Nice to meet you.—______.A.Thank youB.Good morningC.Spell it, pleaseD.Nice to meet you, too二、完形填空Good morning, boys and girls.（1）________ David White. David is my（2）________ name and White is my last name. My telephone number is 235-8634. This year I'm in a new （新的）school. This is my ID card in（3）________ school. My name and my ID card number are on（4）________. In this school I have（5）________ new friends—Jenny and Jasper. Jenny is 11. Her favorite（最喜欢的）（6）________ is orange, so all her cups are （7）________. Jasper is 12. He is a（8）________ boy and he is good to others（其他人）. He always（9）________ "How are you?" or "Can I help（10）________?" I like him very much.（1）A.I'mB.You'reC.He'sD.She's（2）A.middleB.EnglishC.firstD.good（3）A.yourB.myC.herD.his（4）A.meB.thisC.thatD.it（5）A.twoB.threeC.fourD.five（6）A.numberB.colorC.keyD.quilt（7）A.blueB.greenC.orangeD.white（8）A.niceB.redstD.purple（9）A.spellsB.seesC.meetsD.says（10）A.IB.heC.youD.him三、语法填空根据短文内容，用方框中的单词或其恰当形式填空，每词只用一次。
2021-2022学年四川省成都七中万达学校通锦校区七年级(下)月考数学试卷(3月份)
2021-2022学年四川省成都七中万达学校通锦校区七年级（下）月考数学试卷（3月份）一、单选题（每小题3分，共30分）1．（3分）计算x2•x5的结果是（）A．x10B．x7C．2x7D．2x102．（3分）计算（﹣2x2）4的结果是（）A．8x6B．﹣8x8C．﹣16x8D．16x83．（3分）研究发现新冠肺炎病毒大小约为0.000000125米，数0.000000125用科学记数法表示为（）A．125×10﹣9B．12.5×10﹣8C．1.25×10﹣7D．1.25×10﹣64．（3分）下列多项式相乘，不能用平方差公式计算的是（）A．（2x﹣3y）（3y﹣2x）B．（﹣2x+3y）（﹣2x﹣3y）C．（x﹣2y）（2y+x）D．（x+3y）（x﹣3y）5．（3分）在边长为a的正方形中挖去一个边长为b的小正方形（a＞b）（如图甲），把余下的部分拼成一个矩形（如图乙），根据两个图形中阴影部分的面积相等，可以验证等式（）A．（a+b）2＝a2+2ab+b2B．（a﹣b）2＝a2﹣2ab+b2C．a2﹣b2＝（a+b）（a﹣b）D．（a+b）（a﹣2b）＝a2﹣ab﹣2b26．（3分）下列计算正确的是（）A．3a4﹣a4＝3B．（﹣5x3y2）2＝10x6y4C．（ab﹣1）2＝a2b2﹣1D．（x+1）（x﹣2）＝x2﹣x﹣27．（3分）如图，两个正方形的边长分别为a、b，若a+b＝7，ab＝3，则阴影部分的面积是（）A．40B．C．20D．238．（3分）郑州市“旧城改造”中，计划在市内一块长方形空地上种植草皮，以美化环境．已知长方形空地的面积为（3ab+b）平方米，宽为b米，则这块空地的长为（）A．3a米B．（3a+1）米C．（3a+2b）米D．（3ab2+b2）米9．（3分）已知被除式是x3+2x2﹣1，商式是x，余式是﹣1，则除式是（）A．x2+3x﹣1B．x2+2x C．x2﹣1D．x2﹣3x+110．（3分）对于任意正整数n，按下列程序计算下去，得到的结果是（）A．随n的变化而变化B．不变，总是0C．不变，定值为1D．不变，定值为2二、填空题（每小题4分，共16分）11．（4分）已知33x+1＝81，则x＝．12．（4分）（﹣0.2）2020×52021＝．13．（4分）若y2+my+9是一个完全平方式．则m的值为．14．（4分）已知x﹣y＝7，xy＝2，则x2+y2＝．三．解答题15．（16分）计算：（1）3x（x﹣1）﹣（x﹣2）（x﹣1）；（2）﹣32×（﹣）﹣2﹣（﹣1）1025﹣（π﹣3.14）0；（3）（x﹣2）2+（x+3）（x+1）；（4）59×60．16．（6分）先化简，再求值：[（2a+3b）（2a﹣3b）﹣（2a﹣b）2﹣3ab]÷（﹣2b），其中a＝2，b＝﹣1．17．（8分）用简便方法计算．（1）186.72﹣2×186.7×86.7+86.72；（2）（3+1）（32+1）（34+1）（38+1）．18．（8分）（1）已知（a+b）2＝6，（a﹣b）2＝2，求a2+b2与ab的值；（2）已知x+，求x2的值19．（8分）计算：（1）已知（2a n）3＝40，求a6n的值；（2）已知n为正整数，且x2n＝7，求（3x3n）2﹣4（x2）2n的值．20．（8分）已知A、B为多项式，B＝2x+1，小明同学在计算A+B时，把A+B看成A÷B，所得结果是4x2﹣2x+1，请你求出A+B的正确答案，并求当x＝﹣2时，A+B的值．四、填空题（每小题4分，共20分）21．（4分）若a x＝6，a y＝4，则a2x﹣3y＝．22．（4分）已知a2﹣b2＝8，a﹣b＝4，则2a+2b＝．23．（4分）已知162×43×26＝22x﹣1，（102）y＝1012，则2x+y＝．24．（4分）若代数式x2﹣10x+b可化为（x﹣a）2﹣1，其中a、b为实数，则b﹣a的值是．25．（4分）填空：已知多项式x2+x4+是一个完全平方式．（请在横线上填上所有的适当的单项式）26．（8分）若（x﹣2）（x2+ax+b）的积中不含x的二次项和一次项，求：（1）a和b的值．（2）（2a+b+1）（2a﹣b﹣1）﹣（a+2b）（﹣2b+a）+2b的值．27．（10分）张老师组织学校数学兴趣小组展开探究发现：（x﹣1）（x+1）＝x2﹣1（x﹣1）（x2+x+1）＝x3﹣1（x﹣1）（x3+x2+x+1）＝x4﹣1（x﹣1）（x4+x3+x2+x+1）＝x5﹣1……（1）试求25+24+23+22+2+1的值，请你合理推算；（2）计算350+349+348+……+32+3+1，请你认真思考并写出解题过程；（3）判断22021+22020+22019+……+22+2+1的值的末位数是几，请你写出推断过程．28．（12分）我国古代数学的许多发现都曾位居世界前列，如图1的“杨辉三角”就是其中的一例．如图2，某同学发现杨辉三角给出了（a+b）n（n为正整数）的展开式（按a的次数由大到小的顺序排列）的系数规律．例如，在三角形中第三行的三个数1，2，1，恰好对应（a+b）2＝a2+2ab+b2展开式中各项的系数；第四行的四个数1，3，3，1，恰好对应着（a+b）3＝a3+3a2b+3ab2+b3展开式中各项的系数等等．（1）填出（a+b）4展开式中共有项，第三项是．（2）直接写出（1﹣2y）5的展开式．（3）推断多项式（a+b）n（n为正整数）的展开式的各项系数之和S．（4）利用上面的规律计算：26+6×25×（﹣）+15×24×（﹣）2+20×23×（﹣）3+15×22×（﹣）4+6×2×（﹣）5+（﹣）6﹣1．。
2021-2022学年四川省成都市高二年级下册学期4月月考数学试题【含答案】
2021-2022学年四川省成都市高二下学期4月月考数学试题一、单选题1．已知集合，，则（ ）．(){}ln 10A x x =-<{}2320B x xx =-+≤A B = A ．B ．{}12x x ≤<{}12x x ≤≤C ．D ．{}12x x <≤{}12x x <<【答案】D【分析】先化简集合A ，B ，再利用集合的交集运算求解.【详解】解：∵，，{}12A x x =<<{}12B x x =≤≤∴，{}12A B x x ⋂=<<故选：D ．2．中心在原点的双曲线C 的右焦点为，实轴长为2，则双曲线C 的方程为（ ）()2,0A ．B ．C ．D ．2213xy -=21x =2213x y -=2213y x -=【答案】D【分析】根据条件，求出，的值，结合双曲线的方程进行求解即可．a c 【详解】解：设双曲线的方程为．C 22221(0,0)x y a b a b -=>>由已知得：，，1a =2c =再由，，222+=a b c 23b ∴=双曲线的方程为：．∴C 2213y x -=故选：D ．3．若复数z 满足，则（ ）．()1i 13iz -=+z =A ．B ．12i -+12i +C ．D ．12i --12i-【答案】C【分析】根据复数的运算法则求得复数，再求其共轭复数即可.z 【详解】因为，故.()()()()13i 1i 13i 24i 12i 1i 1i 1i 2z +++-+====-+--+z =12i --故选：C ．4．已知，则外接圆的方程为（）((0,3)A B C ABC A ．B ．C ．D ．22(1)2x y -+=22(1)4x y -+=22(1)2x y +-=22(1)4x y +-=【答案】D【分析】求得外接圆的方程即可进行选择.ABC 【详解】设外接圆的方程为ABC ()222()x a y b r -+-=则有，解之得()()()222222222()0)0(0)3a b r a b ra b r ⎧+-=⎪⎪+-=⎨⎪-+-=⎪⎩012a b r =⎧⎪=⎨⎪=⎩则外接圆的方程为ABC 22(1)4x y +-=故选：D5．《周髀算经》中有这样一个问题：冬至、小寒、大寒、立春、雨水、惊蛰、春分、清明、谷雨、立夏、小满、芒种这十二个节气，自冬至日起，其日影长依次成等差数列，立春当日日影长为尺，春分当日日影长为尺，则立夏当日日影长为（ ）9.56A ．尺B ．尺C ．尺D ．尺16.513 3.5 2.5【答案】D【分析】设十二节气自冬至日起的日影长构成的等差数列为，利用等差数列的性质即可求解.{}n a 【详解】设十二节气自冬至日起的日影长构成的等差数列为，则立春当日日影长为，{}n a 49.5a =春分当日日影长为，所以立夏当日日影长为.76a =71042 2.5a a a =-=故选：D6．下列四个命题：①，使；0x ∃∈R 200230x x ++=②命题“”的否定是“”；00,lg 0x R x ∃∈>,lg 0x R x ∀∈<③如果，且，那么；,a b R ∈a b >22a b >④“若，则”的逆否命题为真命题，其中正确的命题是（ ）αβ=sin sin αβ=A ．①B ．②C ．③D ．④【答案】D【详解】中故不存在，使，①错；2230x x ++=441380, =-⨯⨯=-<0x R ∈200230x x ++=命题“”的否定是“”，故②错；00,0x R lgx ∃∈>,lg 0x R x ∀∈≤如果，且，那么，故③错；,a b R ∈0a b >>22a b <“若，则”为真命题，故其逆否命题为真命题，故④对.αβ=sin sin αβ=本题选择D 选项.7．2021年4月8日，教育部办公厅“关于进一步加强中小学生体质健康管理工作的通知”中指出，各地要加强对学生体质健康重要性的宣传，中小学校要通过体育与健康课程、大课间、课外体育锻炼、体育竞赛、班团队活动、家校协同联动等多种形式加强教育引导，让家长和中小学生科学认识体质健康的影响因素.了解运动在增强体质、促进健康、预防肥胖与近视、锤炼意志、健全人格等方面的重要作用，提高学生体育与健康素养.增强体质健康管理的意识和能力.某高中学校共有2000名男生，为了了解这部分学生的身体发育情况，学校抽查了100 名男生的体重情况.根据所得数据绘制样本的频率分布直方图如图所示.根据此图，下列说法中错误的是（ ）A ．样本的众数约为1672B ．样本的中位数约为2663C ．样本的平均值约为66D ．为确保学生体质健康，学校将对体重超过的学生进行健康监测，该校男生中需要监测的学75kg 生频数约为200人【答案】C【分析】根据众数、中位数、平均值的概念等求值即可判断.【详解】对于A ，样本的众数为，A 对；657016722+=对于B ，设样本的中位数为，，解得，B 对；x ()50.0350.05650.060.5x ⨯+⨯+-⨯=2663x =对于C ，由直方图估计样本平均值为57.50.1562.50.2567.50.372.50.277.50.1⨯+⨯+⨯+⨯+⨯，C 错误；66.75=对于D ，2000名男生中体重大于的人数大约为，D 对.75kg 200050.02200⨯⨯=故选：C.8．如图，点为正方形的中心，为正三角形，平面平面是线段N ABCD ECD ∆ECD ⊥,ABCD M 的中点，则EDA ．，且直线是相交直线BM EN =,BM ENB ．，且直线是相交直线BM EN ≠,BM ENC ．，且直线是异面直线BM EN =,BM END ．，且直线是异面直线BM EN ≠,BM EN 【答案】B【解析】利用垂直关系，再结合勾股定理进而解决问题．【详解】如图所示， 作于，连接，过作于．EO CD ⊥O ON M MF OD ⊥F 连，平面平面．BF CDE ⊥ABCD 平面，平面，平面，,EO CD EO ⊥⊂CDE EO ∴⊥ABCD MF ⊥ABCD与均为直角三角形．设正方形边长为2，易知，MFB ∴∆EON ∆12EO ON EN ==，故选B ．5,2MF BF BM ==∴=BM EN ∴≠【点睛】本题考查空间想象能力和计算能力， 解答本题的关键是构造直角三角形．9．已知，，，则以下不等式正确的是（ ）ln 22a =1e b =ln 55c =A ．B ．C ．D ．c b a >>a b c>>b a c>>b c a>>【答案】C 【分析】由于，所以构造函数，然后利用导数判断函数的单调性，再1ln e e e b ==ln ()(0)xf x x x =>利用单调性比较大小即可【详解】，，，ln 22a =1ln e e e b ==ln 55c =令，则，ln ()(0)xf x x x =>21ln ()x f x x -'=当时，，当时，，0e x <<()0f x '>e x >()0f x '<所以在上递增，在上递减，()f x (0,e)(e )+∞，因为，2e 5<<所以，，(2)(e)f f <(e)(5)f f >因为，ln 2ln 55ln 22ln 5ln 32ln 25(2)(5)0251010f f ---=-==>所以，(2)(5)f f >所以b a c >>故选：C10．已知椭圆的左、右焦点分别为，，过点()2222:10x y C a b a b +=>>1F 2F 1F 与在轴上方的交点为.若，则的离心率是（ ）l C x A 112AF F F ＝CA ．BCD 23【答案】A【分析】结合条件及余弦定理可得，然后利用椭圆的定义即求.2AF c=【详解】设，则，12AF F α∠=tan α=7cos 8α=又，112=2AF F F c=在中，由余弦定理可得，12AF F △222227442228AF c c c c c =+-⋅⋅⋅=∴，2AF c=∴，1223a AF AF c=+=∴，23c e a ==故选：A.11．设定义在上的函数的导函数为，且满足，，则不等式R ()f x '()f x '()()ln 20f x f x ->()14f =的解集为（ ）()22x f x ≥A ．B ．C ．D ．[]1,2[)1,+∞(],1-∞(]0,1【答案】B 【分析】首先设，从而得到在上为增函数，将等价于，再()()2x f x g x =()g x R ()22x f x ≥()()1g x g ≥利用单调性解不等式即可.【详解】设，，()()2x f x g x =()()()ln 202x f x f x g x '-'=>所以在上为增函数.()g x R 又因为，所以，()14f =()(1)122f g ==所以.()()()2112xf xg x g x ≥⇒≥⇒≥故选：B12．点，，，在同一个球面上，，若球的表面积为，则四面A B C D AB BC ==2AC =254π体体积的最大值为ABCDA ．B ．C ．D ．1234231【答案】C【分析】先求球的半径，再根据勾股定理得三角形ABC 为直角三角形，根据勾股定理可得球心到平面ABC 距离，最后可得四面体体积的最大值.ABCD 【详解】因为球的表面积为，所以,254π225π54π44R R =∴=因为所以三角形ABC 为直角三角形，222224AB BC AC +=+==，从而球心到平面ABC ,34==因此四面体体积的最大值为，选C.ABCD 13512()(34423⨯+⨯=【点睛】本题考查四面体体积以及外接球，考查综合分析求解能力，属中档题.二、填空题13．设各项为正的等比数列的前n 项和，若，，成等差数列，则数列的公比为{}n a n S 1S -2S3a {}n a ______．【答案】3【分析】根据条件可得，然后可得关于公比的方程，解出即可.1322S a S =-+q 【详解】因为，，成等差数列，所以，1S -2S 3a 1322S a S =-+所以，因为，所以，解得或（舍），()211112a a q a a q +=-+10a ≠()2211q q +=-+3q =1q =-故答案为：314．在正方体ABCD －A 1B 1C 1D 1中，P 为B 1D 1的中点，则直线PB 与AD 1所成的角为____【答案】##6π30︒【分析】根据正方体性质有，则直线PB 与AD 1所成的角为，进而计算其正弦值11//AD BC 1PBC ∠得大小.【详解】由，连接，故直线PB 与AD 1所成的角为，11//AD BC 1PC 1[0,2PBC π∠∈若正方体棱长为2，则11BC PC PB ===所以，故，则，22211PC PB BC +=1PC PB⊥1111sin 2PC PBC BC ∠==故.16PBC π∠=故答案为：6π15．已知函数在处取得极值，则实数_________．()ln f x x =1x ==a 【答案】2-【分析】求出导函数，由求得值，并检验此时是极值点．()f x '()01f '=a 1x =【详解】∵()ln ,0f x x x =>∴，则，，1()f x x '=02(1)1af '+==2a =-当时，，2a =-1()f x x'==时，， 时，，01x <<()0f x '>1x >()0f x '<所以时，取得极值，1x =()f x 所以实数.=a 2-故答案为：.2-16．已知抛物线，过焦点F 的弦AB ，过A ，B 分别作抛物线的切线，两切线交点P 的横坐24x y =标为1，则直线AB 的斜率为______．【答案】##0.512【分析】设，，先根据导数几何意义求得两切线方程，然后联立两切线方程211,4x A x ⎛⎫ ⎪⎝⎭222,4x B x ⎛⎫ ⎪⎝⎭可求得交点横坐标结合条件即得.【详解】抛物线方程为，24x y =抛物线的焦点，∴()0,1F 由题意，直线AB 的斜率存在，设，，，:1AB l y kx =+211,4x A x ⎛⎫ ⎪⎝⎭222,4x B x ⎛⎫ ⎪⎝⎭联立，得，241x yy kx ⎧=⎨=+⎩2440x kx --=，124x x k ∴+=由，得，求导得，24x y =24x y =2x y '=，即 ①∴()21111:42x x l y x x -=-21124x x y x =-同理②2222:24x x l y x =-由①②得，由题可得，即，∴1222x x x k +==12212x x x k +===12k =所以直线AB的斜率为.12故答案为：.12三、解答题17．为积极贯彻落实国家教育的“双减”政策，我市各地纷纷推行课后服务“5+2”模式，即学校每周周一至周五5天都要面向所有学生提供课后服务，每天至少2小时.某初中学校为了解该校学生上学期来参加学业辅导、体育锻炼、综合实践三大类别的课后服务情况，德育处从全校七、八、九年级学生中按照1：2：3分层抽样的方法，抽取容量为240的样本进行调查.被抽中的学生分别对参加课后服务进行评分，满分为100分.调查结果显示：最低分为51分，最高分为100分.随后，德育处将八、九年级学生的评分结果按照相同的分组方式分别整理成了频数分布表和频率分布直方图，图表如下：八年级学生评分结果频率分布表分数区间频数[)50,602[)60,70m[)70,8017[)80,9038[)90,10020(1)根据上述统计图表信息试求m和n的值；(2)为了便于调查学校开展课后服务“满意度"情况是否与年级高低有关，德育处把评分不低于70分的定义为“满意”，评分低于70分的定义为“不满意”，通过样本将七年级和九年级学生对课后服务“满意度"情况汇总得到下表：年级七年级九年级合计满意情况满意30不满意合计()20P K k ≥0.100.0500.0100k 2.706 3.841 6.635请补充上表，并判断是否有90%的可能性认为学校开展课后服务“满意度”情况与年级高低有关?附：，.()()()()()22n ad bc K a b c d a c b d -=++++n a b c d =+++【答案】(1)，；3m =0.015n =(2)列联表见解析，没有90%的可能性认为学校开展课后服务“满意度”情况与年级高低有关．【分析】（1）由题干数据结合频率和为1，八年级学生总数即可得解；（2）由题干数据完善列联表，计算卡方，对比即可得解.【详解】（1）由已知八年级抽取人数为，，224080123⨯=++8021738203m =----=由频率和为1得，．(0.0050.020.040.02)101n ++++⨯=0.015n =（2）七年级人数为，九年级不满意人数为，1240406⨯=(0.0050.015)1012024+⨯⨯=列联表如下：年级满意情况七年级九年级合计满意3096126不满意102434合计40120160，22160(30241096)0.448 2.7061263440120K ⨯-⨯=≈<⨯⨯⨯所以没有90%的可能性认为学校开展课后服务“满意度”情况与年级高低有关．18．如图，菱形ABCD 的对角线AC 与BD 交于点O ，AB ＝5，AC ＝6，点E，F 分别在AD ，CD 上，，EF 交BD 于点H ，将△DEF 沿EF 折到的位置，54AE CF ==D EF ' OD '=(1)证明：平面平面ABCD ；D EF '⊥(2)求三棱锥的体积．B D AC '-【答案】(1)证明见解析；(2)12.【分析】（1）由题可得，然后利用菱形的性质，勾股定理及线面垂直的判定定理可得//EF AC 平面ABCD ，再利用面面垂直的判定定理即得；D H '⊥（2）利用锥体的体积公式即得.【详解】（1）∵ABCD 是菱形，AD ＝DC ，又，54AE CF ==∴，则，DE DF EA FC =//EF AC 又由ABCD 是菱形，得AC ⊥BD ，则EF ⊥BD ，∴EF ⊥DH ，则，EF D H '⊥∵AC ＝6，∴AO ＝3，又AB ＝5，AO ⊥OB ，∴OB ＝4，∴，则，1AE OH OD AD =⋅=3DH D H '==∴，则，又，平面ABCD ，222OD OH D H ''=+D H OH '⊥OH EF H = ,OH EF ⊂∴平面ABCD ，平面，D H '⊥D H '⊂D EF '所以平面平面ABCD ；D EF '⊥（2）由题可知，，11641222ABC S AC OB =⋅=⨯⨯= 3D H '=所以三棱锥的体积为.B D AC '-111231233B D AC D BAC ABC V V S D H ''--'==⋅=⨯⨯=19．在△中，ABC b a=cos A =(1)求证：△为等腰三角形；ABC (2)再从条件①、条件②、条件③这三个条件中选择一个作为已知，使△存在且唯一，求的ABC b值.条件①：；π6B ∠=条件②：△的面积为；ABC 152条件③：边上的高为.AB 3注：如果选择的条件不符合要求，第（2）问得0分；如果选择多个符合要求的条件分别解答，按第一个解答计分.【答案】(1)证明见解析；(2)详见解析.【分析】（1）把转化为边a 、b 之间的倍数关系，把a 、b 、c 之间b a =cos A =的关系，综合可得证；（2）条件①,与已知cos A =条件②，通过三角形面积公式解得a ，可使△存在且唯一；ABC 条件③，通过转化条件，可使△存在且唯一.ABC【详解】（1）在△中，由ABC b a =b =则由cos A =2222a c =+-即，故有()(35)0a c a c -+=c a=故△为等腰三角形.ABC （2）选择条件①：时，由（1）知，则有，π6B ∠=c a =512A C π∠=∠=此时，5cos cos cos()1264A πππ==+=≠与已知矛盾，三角形无解.不能选；选择条件②：△的面积为时，ABC 152由得，cos A =3sin sin(2)2sin cos 25B A A A π=-===故有，解得，,21315252a ⨯=5a =5c=b =三角形存在且唯一，可选.选择条件③：边上的高为.AB 3由得，cos A =3sin sin(2)2sin cos 25B A A A π=-===可得，则有,3353sin 5a B ===5c =b =三角形存在且唯一，可选.综上可知:选择条件②时，三角形存在且唯一，b =选择条件③时，三角形存在且唯一，b =20．设函数，，()1x f x e kx =--0x ≥R k ∈（1）求的单调递增区间；()f x （2）当，时，求证：.1k =12a ≤2()f x ax ≥【答案】（1）当时，的单调递增区间是，当时，的单调递增区间是1k ()f x (0,)+∞1k >()f x ；（2）证明见解析(ln ,)k +∞【分析】（1）对函数进行求导，再对进行分类讨论，即可得到答案；k （2）由，只需证，设，又，只需证12a ≤21()2f x x ≥2211()()122x g x f x x e x x =-=---(0)0g =，利用恒成立，即可证明结论.()0g x '≥1x e x ≥+【详解】（1）， ()x f x e k '=-①当时，在恒成立，1k ()0f x ' (0,)+∞在单调递增；∴()f x (0,)+∞②当时，，，1k >'()0ln f x x k >⇒>'()00ln f x x k <⇒<<在单调递增，∴()f x (ln ,)k +∞综上，当时，的单调递增区间是，1k ()f x (0,)+∞当时，的单调递增区间是；1k >()f x (ln ,)k +∞（2）因为，要证，只需证，12a ≤2()f x ax ≥21()2f x x ≥设，2211()()1,022x g x f x x e x x x =-=---≥，令恒成立，()1x g x e x '=--()1,()10,0x x u x e x u x e x '=--=-≥≥所以在上单调递增，所以，()u x [0,)+∞()(0)0u x u ≥=即上恒成立，()0,[0,)g x x '≥∈+∞所以单调递增，，(),[0,)g x x ∈+∞()(0)0g x g ≥=即，得证.21()()02g x f x x =-≥【点睛】证明指对不等式要注意常用不等式的应用，如，等1,,ln 1x x e x e ex x x ≥+≥≥+ln(1)x x ≥+等，以及注意端点函数值与不等式的关系.21．已知椭圆分别为椭圆的上、下顶点，且2222:1(0)x y E a b a b +=>>,A B E .2AB =(1)求椭圆的标准方程；E (2)设直线与椭圆交于（不与点重合）两点，若直线与直线的斜率之和为，l E ,M N ,A B AM AN 2判断直线是否经过定点？若是，求出定点的坐标；若不是，说明理由.l 【答案】(1)2214x y +=(2)直线经过定点．l (1,1)--【分析】（1）根据离心率和，求出，，从而求出椭圆方程；（2）先2AB =222a b c =+2a =1b =考虑直线斜率存在时，设直线，()，联立后用韦达定理，利用题干条件列出方程，:l y kx t =+1t ≠±求出，从而求出直线过的定点，再考虑斜率不存在时是否满足，最终求出答案.1t k =-【详解】（1c a=因为为椭圆的上、下顶点，且，所以 即 ，,A B 2AB =22b =1b =又222a b c =+解得：2a =所以椭圆的标准方程为E 2214x y +=（2）直线经过定点，证明如下：l ()1,1--①当直线的斜率存在时，设，()，l :l y kx t =+1t ≠±由，得，2214y kx t x y =+⎧⎪⎨+=⎪⎩222(14)8440k x ktx t +++-=则 得：222(8)4(14)(44)0kt k t ∆=-+->2241t k <+设1122(,),(,)M x y N x y 则，， 122814kt x x k -+=+21224414t x x k -=+则1212121212112(1)()AM AN y y kx x t x x k k x x x x --+-++=+=8(1)24(1)(1)k t t t -==+-所以，经检验，可满足，1t k =-2241t k <+所以直线的方程为，即l 1y kx k =+-()11y k x =+-所以直线经过定点．l ()11--，②当直线的斜率不存在时，设，，，l :l x m =(,)M M m y (,)M N m y -则112M M AM AN y y k k m m---+=+=解得，此时直线也经过定点1m =-l ()11--，综上直线经过定点．l (1,1)--【点睛】直线过定点问题，需要设出直线方程，与曲线联立方程后用韦达定理得到两根之y kx b =+和，两根之积，利用题干中条件得到等量关系，找到与的关系，或者求出的值，从而确定所k b b 过的定点，注意考虑直线斜率不存在的情况.22．已知函数，函数()21f x x =-()ln g x a x =(1)如果曲线与在x ＝1处具有公共的切线，求a 的值及切线方程；()y f x =()y g x =(2)当时，讨论的零点个数．2a ≥()()()h x f x g x =-【答案】(1)；；2a =220x y --=(2)当时，函数的有一个零点；当时，函数的有两个零点.2a =()h x 2a >()h x 【分析】（1）和在处的切线相同，则在该点出的导数相等，从而求解a 的值，()y f x =()y g x =1x =以及切线l 的方程；（2）分和讨论，利用导数研究函数的性质结合条件及零点存在定理即得.2a =2a >【详解】（1）由题可知，()2,()(0)a f x x g x x x ''==>由题意，公共切线的斜率，即，(1)(1)k f g ''==2a =又因为，(1)0f =所以切线方程为，即；()21y x =-220x y --=（2）因为函数，2()()()1ln (0)h x f x g x x a x x =-=-->则，22()2a x a h x x x x -'=-=当时，令，解得，2a =()0h x '=1x =与的变化情况如下：()h x '()h x x (0,1)1(1,)+∞()h x '-0+()h x 减函数增函数所以在上单调递减，在上单调递增，()h x (0,1)(1,)+∞所以当时，，1x =min ()(1)0h x h ==故有且仅有一个零点，()y h x =1当时，令，解得，2a >()0h x '=x 与的变化情况如下：()h x '()h x所以在上单调递减，在上单调递增，()hx ⎛ ⎝⎫∞⎪⎪⎭所以当，x=()min h x h = 因为，(1)0h =1> 所以函数在上存在一个零点，且，⎛ ⎝()10h h <=又，222e e 1ln e e 12a a a a a h a ⎛⎫=--=-- ⎪ ⎪⎝⎭令，则，()2e 1,22aa t a a =-->()e a t a a '=-设，则，在上单调递增，()()e a s a t a a '==-()e 10a s a ='->()s a ()2,a ∈+∞则，故，在上单调递增，()()22e 20s a s >=->()0t a '>()t a ()2,a ∈+∞所以，即，又，在上单调递增，()()22=e 30t a t >->2e 0a h ⎛⎫> ⎪ ⎪⎝⎭0h <()h x ⎫∞⎪⎪⎭所以存在，使得，20,e a x ∈⎫⎪⎪⎭0()0h x =所以，当时，函数存在两个零点；2a >()y h x =01,x 综上，当时，函数的有一个零点；当时，函数的有两个零点.2a =()h x 2a >()h x 【点睛】利用导数研究零点问题：（1）确定零点的个数问题：可利用数形结合的办法判断交点个数，如果函数较为复杂，可用导数知识确定极值点和单调区间从而确定其大致图象；（2）方程的有解问题就是判断是否存在零点的问题，可参变分离，转化为求函数的值域问题处理.可以通过构造函数的方法，把问题转化为研究构造的函数的零点问题；（3）利用导数硏究函数零点或方程根，通常有三种思路：①利用最值或极值研究；②利用数形结合思想研究；③构造辅助函数硏究.。
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成都三中2021-2022学年度七（下）4月月考+答案 A卷（选择题：共100分） 第一部分 听力 略 （共30分） 第二部分 基础知识运用 （共40分） 六、选择填空，（共15小题；计20分） A.从A、B、C 三个选项中选择正确答案。（每小题1分；计10分） ( )31. It’s_________ early morning.Jack starts(开始) to play_____chess at 6:30 am. A. a; the B.an;/ C. an; the ( )32.There are eight___ students and ninety teachers in our school. A. hundred B. hundreds C. hundreds of ( )33.-_______? -About thirty minutes’ walk. A.How do you usually go to school B. How far is it from your home to school C. How long does it take you to get to school ( )34. You can't eat in the classroom____run in the hallways. A.and B. or C. but ( )35.Mary is good at_______ so she joins the art club. A. drawing B. running C. driving ( )36. You must take the bus or the subway to the library because it is_________. A. clean B. new C. far ( )37. Can you find three differences(不同)___ the two pictures? A.between B. with C.for ( )38.__you___ go home now? A.Do; have to B. Does; have to C.Have; to ( )39.Jack, ________play the guitar here. We are talking on the phone now. A. doesn't B. not C. don't ( )40. My sister usually goes to school_______bus, but she____her bike there today. A. by; rides B. on; rides C. by; drives B ．补全对话。(每小题2分；计10分） A: Morning, Linda! B: Morning! A: 41 B: In a village. A: Is your school far from your home B: Yes, I think it is far. 42 I need to get up early. A: When do you get up every morning? B: 43 A: Do you have breakfast at home? B: Yes, I eat breakfast at home. A: 44 B: I always walk to school. Sometimes, I take the bus. A: 45 B: You are right.I like walking very much. A. Where do you live? B. I usually get up at 5 . 40. C. How do you usually get to school? D. I think walking is good for your health. E. It’s about ten kilometers from my home to school. 七、完形填空（A篇每小题2分，计10分； B篇每小题1分，计10分；共计20分） A There will be a talent(才艺) show next Sunday. Everyone is 46 except(除了) Tom. He can’t play the piano,the drums or the guitar. And he is not good 47 singing or dancing.
“Hey, Tom. 48 do you want to do in the show?”asks Peter.“Well,I don’t have any talent,”Tom says.“Come on,Tom. We all 49 your stories. You can tell us Chinese stories,” says Peter.“Really?I think it is 50 to tell a story in the show,” says Tom. “No, your stories are always fun,”Peter says. “Thank you, Peter. I know what I can do,” Tom says.
46. A. happy B. healthy C. free 47.A.at B.for C. with 48.A.When B. Where C. What 49.A.tell B. like C. make 50.A. useful B. difficult C. boring B Paul is a host (主持人) of WABC Radio Station. Many boys and girls 51 him. Some of them often 52 him and thank him for his interesting 53 so there are lots of e-mails for him every week.
Paul gets up at 6:40 every morning. He does 54 .He likes to play basketball. After that he has breakfast. He usually doesn’t have a 55 breakfast. He only has an egg and some milk. He usually 56 home at 7:30 and he gets to his office(办公室) at 7:50.
The show begins at 8:20. Paul's 57 is to play new songs and 58 listeners(听众).Paul 59 his work at 10:30 and then goes back home by car. It usually takes him twenty minutes to 60 home. He likes to read books in the afternoon and he goes to bed early in the evening.
51. A.like B. watch C. need 52. A. call B.write C.e-mail 53. A. game B. class C. show 55. A. free B. healthy C.big 54. A. sports B.homework C.kungfu 56. A.rides B. cleans C. leaves 57. A. job B. friend C.subject 58. A. meet B. help C take 59. A. gets B. finishes C.loves 60. A.ride B. walk C.drive 第三部分阅读理解（共15小题；计30分） 八、阅读判断正误。正确的填“A ”，错误的填“B ”。(每小题2分：计10分） Jack Brown is my good friend from Australia. His family are in Beijing now. His mother Mrs. Brown is teaching art in a school. Mrs. Brown goes to work on foot because it is only five minutes’ walk from home to the school. Mr. Brown is a great doctor(医生)Many young doctors are learning from him in the hospital(医院).He has a new car, but he usually rides a bike to work. He thinks it is a good way to exercise and keep healthy. Jack likes Chinese but he can’t speak Chinese well.We often help him with his Chinese and he helps us with our English.Look! What is Jack doing now? He is playing the guitar. His birthday is next week. He wants to play it a his birthday party.
61. Jack lives in Beijing but he is not Chinese. 62. Jack’s home is far from his mother’s school. 63. Mr. Brown goes to work by bike because he can’t drive the car. 64. Jack is not good with his classmates. 65. Jack will have a birthday party next week. 九、阅读短文，选择正确答案。（每小题2分；计20分） A My name is Molly. I work in a library. Here are the rules of the library. ▲Don't bring any bags into the reading room. ▲Don't eat in the reading room. ▲ Keep quiet in the library. Don't answer the phone in the reading room. ▲ You can borrow(借) three books at one time and you can keep them for one month.