9A基础卷(二)
基础卷高二化学上学期期中考前必刷卷(人教版2019选择性必修1)(全解全析)含答案
2022-2023学年上学期期中考前必刷卷（基础卷）高二化学·全解全析123456789101112131415161718BADABDBDBADBBDCCBC1．B 【解析】A ．有些放热反应，加热才能发生反应，如铝热反应，需要“高温”条件，选项A 正确；B ．吸热反应在一定条件下（如常温、加热等）也能发生，如醋酸钠的水解反应是吸热反应，常温下可以进行，选项B 不正确；C ．生成物与反应物所具有的总能量的差值为反应的△H ，△H ＜0放热，△H ＞0吸热，选项C 正确；D ．在稀溶液中，酸与碱发生中和反应生成1mol H 2O(l)时的反应热叫做中和热，选项D 正确；答案选B 。
2．A 【解析】A ．“NO 2”球中有，将该“NO 2”球浸泡在热水中，平衡逆向移动，颜色变深，A 符合题意；B ．该反应是气体体积不变的反应，加压不会使平衡移动；加压后，容器体积变小，各组分浓度变大，体系颜色变深，并非由平衡移动引起；B 不符合题意；C ．铁和稀硝酸反应生成硝酸铁，过量的铁会继续和硝酸铁反应生成硝酸亚铁，所以过量铁和稀硝酸反应后，溶液会变成浅绿色，该过程和平衡移动无关，C 不符合题意；D ．合成氨工业使用铁触媒作催化剂可以加快反应速率，催化剂不会引起平衡的移动，D 不符合题意；故选A 。
3．D 【解析】A ．断键吸热，故A 错误；B ．形成化学键放出热量，故B 错误；C ．放热反应不一定需要加热，如酸碱中和反应常温下即可进行，故C 错误；D ．有些吸热反应常温下即可发生，如氢氧化钡晶体与氯化铵的反应，故D 正确；故选：D 。
4．A 【解析】焓变=旧键断裂吸收的总能量-新键形成释放的总能量，即∆H =4a+3b-2z-6d=-q ，则z=(q+4a+3b-6d)，答案为A 。
5．B 【解析】A ．后者氢气燃烧生成液态水放出的热量多，但放热越多，则△H 2<△H 1，故A 不符合题意；B ．气态硫的能量要高于固态硫的能量，因此前者放出的能量多，则△H 2>△H 1，故B 符合题意；C ．前者是不完全燃烧，放热少，后者是完全燃烧，放热多，则△H 2<△H 1，故C 不符合题意；2242NO N O †‡12D ．后者的化学计算数扩大2倍，后者放出的热量多 ，则△H 2<△H 1，故D 不符合题意；本题答案B 。
【学易金卷】2023-2024学年一年级数学上册期末全真模拟基础卷(一)(答案)(北师大版)
保密★启用前2023-2024学年一班级数学上册期末全真模拟基础卷（一）（答案）开头检测8：30 田田检测时11：00检测结束12：00【分析】像这样的图形叫长方体；像这样的图形叫正方体；像这样的图形叫圆柱；像这样的图形叫球；据此解答。
【详解】依据分析可得：【点睛】本题考查物体的分类，把握生活常识是解决本题的关键。
9．【答案】6 9【分析】分别计算出两个数到4之间的相差多少，然后再进行比较。
【详解】6－4＝29－4＝52＜5所以6和9这两个数，（6）离4近，（9）离4远。
【点睛】主要考查了10以内数的比较大小。
10．【答案】1 2【分析】数一数可知，图中有6只小兔，有5把椅子，有8杯果汁。
用小兔的数量－椅子的数量＝缺少的椅子数量；用果汁的数量－小兔的数量＝多了的果汁数量。
【详解】6－5＝1（把）；8－6＝2（杯）每只小兔1把椅子，还缺1把椅子；每只小兔1杯果汁，多了2杯果汁。
【点睛】本题主要考查减法的计算，要娴熟把握。
11．【答案】见详解【学问点】结合图片，直接比较长短，然后在长的后面画上相应的符号；【详解】【点睛】本题考查同学对比较物体长短的把握和运用。
12．【答案】9 2 7【分析】依次数一数可知，一共有9只小动物。
从小鸡开头数，可数出羊在第2只；从猴子开头数，可数出大象在第7只。
【详解】一共有9只动物。
从小鸡开头数，第2只动物是羊。
从猴子开头数，第7只动物是大象。
【点睛】娴熟把握数一数是解题的关键。
13．【答案】 6 3【分析】分别数一数苹果和葫芦各有多少个，然后进行比较即可。
【详解】由分析可得：（）比（）多，（6）＞（3）。
【点睛】主要考查10以内数的比较大小。
14．【答案】C【分析】依据生活阅历和对上下的理解解答即可。
【详解】云云家住在五楼，桐桐家住在七楼，那么桐桐家在云云家的上面。
故答案为：C【点睛】本题主要考查对上下的生疏。
15．【答案】B【分析】左边有4瓶，中间有3瓶，右边有1瓶，然后把它们相加求出和，就是一共有多少瓶。
【素养测评】Unit 3 Amazing animals 基础达标评价卷(含答案)
【素养测评】Unit 3 Amazing animals 三年级英语上册基础达标评价卷（含答案）人教PEP版（2024）一、选择题1．—Do you have a pet? ()—_____________A．Yes, I do.B．Yes, it is.C．No, it isn’t.2．—I like your cat. ()—_____________A．Ok.B．Thank you.C．Great.3．—Look at the giraffe. ()—Wow! ______A．It’s so tall!B．It’s so big!C．It’s so long!4．—Woof! Woof! What’s this? ()—It’s a ______.A．pig B．cat C．dog5．I have a bag. It’s an ______. ()A．elephant B．dog C．pig6．—What are these? ()—They are _____.A．pandas B．tigers C．elephants7．假如对你的好朋友说你有一只宠物，你应该说：()A．I like pets.B．I have a dog.C．I have a pet.8．假如你的朋友来你家做客，你想让他们进屋，你应该说：()A．Come in.B．It’s OK.C．Thanks.9．假如你想给你的父母介绍你的朋友，你应该说：()A．This is my friend.B．I like my friend.C．Thank you. 10．假如你想表达自己喜欢猫，你应该说：()A．I like cats.B．This is a cat.C．I have a cat.二、填空题11．It’s a big .12．I like .13．This is a .14．The is cute. 15．I see a .三、翻译题16．它是只小熊猫。
【精编】牛津英语7BUnit2练习卷及答案2
7B Unit 2 Welcome to Sunshine Town 基础练习卷一、选择填空:( )1. I’m busy today. I have lots of things_________.A. doB. to doC. doesD. doing( )2. I have______ money in my pocket.A. anyB. notC. noneD. no( )3. How many girls are there in the classroom?_________.A. Not anyB. NoneC. NoD. Anybody( )4. I went to the park_______ yesterday.A. on a bicycleB. by the bicycleC. in a bicycleD. by bicycles( )5.The bicycle________ me 300 yuan.A. spentB. tookC. leftD. cost( )6. They didn’t leave______ 10 o’clock last night.A. whenB. toC. untilD. after( )7. _______ of them______ in the city.A. No one, areB. None, isC. No, isD. No one, is( )8.____ pieces of bread______ in the box.A. How many, is thereB. How much, is thereC. How many, are thereD. How much, are there( )9. He is still hungry, he wants to have______ milk.A. one moreB. another oneC. some moreD. many more( )10. We can’t wait_______ our teacher from the USA.A. seeB. seeingC. to seeD. for seeing( )11. It took me two hours_____ to the hospital yesterday.A. walkedB. walkingC. walksD. to walk( )12. The shop that is_______ to my home is often______ at 9:30 p.m.A. close, closeB. closed, closedC. close, closedD. close, closes( )13.______ is very difficult.A. Lesson fifthB. The lesson fifthC. Five lessonD. The fifth lesson( )14. John, hurry up! You are______ over the phone.A. askedB. hopedC. answeredD. wanted( )15. The computer doesn’t work. I’m afraid you______ use it today.A. mayB. can’tC. needn’tD. mustn’t( )16. Happy birthday, Tom. ________.A. With pleasureB. Thanks a lotC. You tooD. The same to you( )17. Which would you like to drink, tea or coffee?______. I’d like to have some juice.A. NoneB. NeitherC. BothD. All( )18. It’s a good school________.A. to studyB. to study in itC. to study inD. studying in( )19. I like sleeping late_____ every Sunday morning.A. inB. onC. atD. /( )20.Excuse me, could you tell me_____ get to No.1 Hospital, please.A. where isB. which is toC. how can ID. how to( )’s go to the cinema,________?A. shall weB. will youC. are youD. do you( )22.There is _______ food in the fridge.A. noneB. noC. notD. no any( )23. He was very surprised. He couldn’t open the car of________.A. his own’sB. he ownC. he own’sD. his own( )24. When shall we meet, this evening or this afternoon? I don’ time is OK.. A. Both B. Every C. All D. Either( )25. Of the three men, one is a worker, _______ two are masters.A. the othersB. the otherC. othersD. other二、词形变换:1. What about______________(go) camping with us?2. Would you like_______________(eat) some bread for breakfast?3. Jim is a_______________(wait) of a restaurant.4. Please ask him______________(call) me this evening.5. When summer comes, they like going______________(swim) in the river.6. There are a lot of clothes______________(wash) in the house.7. I’m________________(friend) to my students.8. Why not________________(buy) some souvenirs here?9. He lives on the________________(twenty) floor.10. In her_______________(fifty), she wrote a lot of books.11. I don’t think it’s a wonderful place_________________(play).12. All the children looked________________(happy) at the fashion show.13. There is always a lot of homework for me_______________(do) at weekends.14. It often takes me 40 minutes______________(ride) back home..15. Nick with his family usually_______________(play) football in the school.16. Lots of animals lost their______________(live) area because of the serious population.17. People think he is one of the greatest_______________(invent) in the world.18. ______________(slow), everything became a little bit easier.19. All the players in the football team must be_____________(train) five time a week.20. My idea is quite different from________________(she).21. Do you know the girl__________________(play) the piano there?22. While they_______________(discuss) how to solve the problem, anotherproblem happened.23. What a______________(please) trip they had to Hong Kong!24. He left the classroom ,__________________(say) nothing.25. What do you study for? ______________(study) for the people.参考答案一、选择填空: BDBAD, CBCCC, DCDDB, BBCDD, ABDDB二、词形变换:1. going2. to eat3. waiter4. to call5. swimming6. to wash7. friendly 8. buy 9. twentieth 10. fifties 11. to play 12. happy13. to do 14. to ride 15. plays 16. living 17. inventors18. Slowly 19. trained 20. hers 21. playing 22. were discussing23. pleasant 24. saying 25. To study。
9AUnit3基础知识测试卷
9A Unit 3 Teenage ProblemsClass___________ Name___________ No___________ Score ___________一、词汇（每题0.5分，共30分）A.根据句意、中文提示和英文释义拼写单词。
1. School life has a great influence on the development of ____________ (青少年的) students.2. Tom was very unhappy and ____________（say that he will not do something）to share the book with hisbrother.3. Try to ____________ (想象) a bedroom as big as a basketball field.4. Tom is always an honest boy. I never ____________ (be not sure if something is true) what he says.5. ____________ (maybe)their biggest problem is that they don’t have enough time to do it.6. Thanks for giving me ____________ ( of great value, worth or use) information.7. Drunk dribing is one of the most common_____________(原因) of many traffic accidents.8. No one can ____________ (get) anything without effort.9. I don’t think the film is well ____________ seeing.10.We should take our teachers’ ____________ about how to learn English well. They’re so useful.11.John’s had a lot of problems at home recent ly and they are starting to influence his ____________ (work thatstudents do at school or for school).12.The noise from the machines almost drove me ____________ (angry,crazy or very silly)that day.13. Do you think Simon’s parents are ____________（严格的）?14. She wonders____________ (if) she should tell her father about it.15. I need someone to share my ____________（担心）with.16. Nora loves English, Maths and ____________ (化学).17.---What’s the ____________ (重量) of the wooden box? ---Fifty kilos.18. His parents are angry at his school work. They can’t see his ____________ (进步)after each exam.19. My grandpa __________(start to have a skill, ability, etc.) the habit of jogging in the morning many years ago.20. Sometimes, I want to ____________ (say that you will not do something) to do so much homework.B．2122. The students went out of the classroom ____________.23. I can’t se e them clearly, Can I look at them much ____________.24. A bull has four ____________.25. Can you tell me the ____________ between the two words?27. Mrs. Rainbow can help us change our moods ____________.28. ---Can you help me with the work? ---With ____________.29. It will be a good ____________ to revise our lessons every evening.30. He has no courage to tell the ____________.31.32.____________ ahead can help you make work easier.33. Pay attention to ____________ down what the teacher said in class.34.What will you do if someone ____________ at you?35.Our teacher is helpful enough to give us lots of useful ____________.37. My cousin has two ____________ —One is English-English and the other is English-Chinese.38. The baby has been ____________for ten minutes. He is waiting for his mother to feed him.39. Our English teacher often asks us to read after him in class to improve our ____________.40. To break the ____________, the teacher told a joke and the students all laughed right away.C．41. ---42. You ____________ him with his lessons next week, aren’t you?43. We will go to the bookshop if Mr Black ____________ time.44. I must go now. Someone ____________ for me there.45. There ____________ any students in the school yesterday.47. Is your mother a teacher?--- Yes. She ____________ English since she left college.48. He told me he____________an operation then.49. Jim ____________ an e-mail to his uncle at present.50. There ____________ no library here in the past.52. ____________, he failed in the driving test.53. The words you should pay attention to ____________ on the blackboard.54. Whatever the weather is like, you’ll find them ____________ outside.55. I think you advice is worth ____________.5657.Two bridges ____________ in our province last year .Now people feel very satisfied with the traffic.58. ---Where are the children? ---They____________ about what TV programmes to watch in the sitting room.59.Don’t drink too much coffee.It ____________you to be too excited.60. --- ____________ your penfriend ____________ to your e-mail?--- No, not yet.二．单项选择（每题1分，共50分）( ) 1.--- Mum, I think I’m _______ to get back to school.---Not really, my dear. You’d better stay at home for another day or two.A. so wellB. so goodC. well enoughD. ill enough( ) 2. Taking _______ exercise in the open air is a good way to prevent yourself from _______SARS.A. more; getB. much; getC. less; gettingD.more; getting( ) 3. Many students are too busy _______ to have time for their hobbies.A. studyingB. to studyC. studyD. with studying( ) 4. His friends find _______him everything that has happened.A. it necessary to tellB. that necessary toC. necessary it toD. necessary to tell( ) 5. My parents don’t allow me _______.A. to give up itB. to give up dancingC. giving it upD. giving up( ) 6. _______of my parents has been to Beijing before.A. BothB. AllC. NoneD. Either( )7. They learned it all by themselves. That is to say nobody told them _______.A. what to do itB. how to do itC. where to doD. when to do( ) 8. I’m afraid it’s too noisy, would you please _______?A. turn it upB. to turn up itC. turn it downD. turn down it( ) 9. His father looked _______ at him when he knew he failed in his exams.A. happyB. happilyC. angryD. angrily( )10.This book is really worth _______.A.to readB. to readingC. readingD. reads( )11. I have_______things to do, I am _______ busy now.A. too much; too manyB. too much; much tooC. too many; too muchD. too many; much too( )12. I’ll come _______ next week when I’m less busy.A. some timeB. sometimeC. sometimesD. some times( )13. May works hard _______ English and she is always the first _______ to school.A. in, to getB. at, to getC. in, gettingD. at, getting( )14. Mr Smith gave _______ on the study of physics.A. a good adviseB. good adviseC. good adviceD. some good advices ( )15. He has _______ few friends that he doesn’t know who to _______.A. so, talk withB. such, talk toC. so, talkD.such, talking( )16. We must be strict_______ ourselves and be strict _______our study.A. in; withB. with; inC. in; inD. with; with( )17. Hurry up, _______ you will miss the train.A. andB. soC. howeverD. or( )18.We finally _______why he was late to catch the train.A. foundB. found outC. looked forD. invented( )19. He was_______ in the room all day, but he didn’t feel _______A. alone; aloneB. lonely; lonelyC. alone; lonelyD. lonely; alone( )20. ---Please don’t stay up to late. It’s bad for your health.---_______.A. No, I didn’t..B. No, I won’tC. No, I willD. Yes, I do( )21. The policeman asked him.A. what did his car look like.B. what was his carC. his car looked like whatD. what his car looked like( )22. I _______much time _______my homework yester day .A.took , to doB. cost , doingC. spent , to doD. spent , doing( )23. People found him on the road _______ a cold winter morning .A. inB. atC. onD. for( )24. He has to stay at home because he has _______close friends .A. a few B .few C. little D. a little( )25. Could you work out how much time _______ finish your homework?A. do you needB. you needC. you need toD. do you need to( )26. _______ unfair news it is !A. What aB. What anC. WhatD. How( )27. --- Bo bby didn’t go to school this morning , did he ?--- _______. Though he was not feeling very well .A. No , he didn’t .B. Yes , he didC. No, he didD. Yes , he didn’t .( )28.Taking more exercise and eating less food_______ good for your health.A. isB. areC. wasD. were( )29. Would you please_______ in the library?A. not to talk loudlyB. don’t talk loudlyC. not talk loudlyD. not talking loudly( )30. You shouldn’t_______ too much. It’s bad for your health to_______.A. worry, worriedB. worried, worryC. worry, worry aboutD. worry, be worried ( )31.We must be strict _______ ourselves and strict _______ our work.A. in; withB. with; inC. in; inD. with; with( )32.We don’t think it’s good to stay_______late to play computer games.A. onB. outC. fromD. out of( )33. It’s so_______ in the classroom that he can’t focus on his homework.A. noiseB. noisyC. noisierD. noisily( )34.---Would you like some coffee?---Yes, and please get me some milk, too. I prefer coffee_______ milk.A. withB. ofC. toD. than( )35. You shouldn’t_______ too much. It’s bad for your health to_______.A. worry, worriedB. worried, worryC. worry, worry aboutD. worry, be worried ( )36. Would you mind lending me your bike? _______.A. Certainly not, here you areB. Yes, OKC. Yes, My bike is brokenD. Yes, here you are. ( )37.--- Could you tell me _______ the gardon ? --- The day after tomorrow, I think.A.when will you visitB.when you will visitC.when would you visitD.when you would visit( )38.The film star is busy all day and has little time _______her little son.A. toB. ofC. forD. in( )39.— Why do you look so sleepy in class, John?— Sorry, sir. I _______ to watch a live football match last night.A. kept upB. made upC. stayed upD. put up( )40.I want to know _______ you will come back at 8:00tomorrow.A.thatB.whenC.whereD.whether( )41.Tomorrow there will be an English test and now the students are all busy_______the notes and English words.A. going onB. going downC. going acrossD. going over( )42. — David, the weekend is coming. What shall we do?—_______ go hiking in the countryside?A. What aboutB. Why notC. Why don’tD. Let’s( )43.— Thank you for sharing your ruler with me. —_______That’s wha t friends are for.A. Don’t mention it.B. It doesn’t matter.C. Never mind.D. All right.( )44. —Could you tell me_______? —Sorry, I don’t know.A. where are my booksB. where can I find my booksC. where my books areD. where my books put( )45 — Listen! The TV is _______. Who is in the living room?— Little Jim. He is watching his favourite cartoon.A. offB. outC. awayD. on( )46.— Thank you for sharing your ruler with me.—_______ That’s what friends are for.A. Don’t mention it.B. It doesn’t matter.C. Never mind.D. All right.( )47. — John, can you tell me the_______ why you are often late?—I can’t sleep well from time to time. The_______of my problem is that there is often much noise near my building.A. reason; reasonB. cause; reasonC. reason; causeD. cause; cause( )48. — I have written to them twice to tell them the problem, but there is no _______ at all.—Maybe they didn’t get your letters.A. replyB. callC. informationD. news( )49. In order to improve my English, I bought lots of English test papers _______ my brother’s advice.A. listening toB. asking forC. according toD. looking forward to ( )50. Tomorrow there will be an English test and now the students are all busy_______ the notes and English words.A. going onB. going downC. going acrossD. going over三、句型转换（每空1分，共20分）1. They found something important in his bag. (改为否定句)They ___________ find ___________ important in his bag.2. She doesn’t know where she should go for advice. (改为同义句)She doesn’t know ___________ ___________ go for advice.3. She coloured the birds blue to make herself more peaceful. (改为同义句)She coloured the birds blue ___________ ___________ she ___________ make herself more peaceful.4. I think that it is important to do homework. (改为同义句)I think ___________ important ___________ do homework.5. She could do nothing but wait. (改为同义句)She had no ___________ but __________ __________.6. Daniel is kind. He helps his friends at all times. (合并为一句)Daniel is ___________ ___________ to help his friends at all times.7. My parents let me play computer games last weekend. (改为同义句)My parents ___________ me ___________ play computer games last weekend.8. I got up early this morning because I wanted to catch the early bus.I got up early___________ ___________to catch the early bus.(改为简单句)9. I can’t decide where I will spend my coming holiday. (改为同义句)I can’t decide ___________ ___________ spend my coming holiday.。
二次函数与一元二次方程(A卷基础巩固) -九年级数学下册同步分层练习(北师大版)(原卷版)
2.10—2.11 二次函数与一元二次方程学校:___________姓名：___________班级：___________考号：___________A 卷（基础巩固）一、单选题1．（2021·安徽淮北九年级月考）若二次函数2y ax bx c =++的部分图象如图所示，则方程20ax bx c ++=的解是（ ）．A ．1x =B ．1x =或3-C ．11x =，23x =-D ．11x =-，22x =-第1题图 第2题图2．（2021·福建省福州市九年级月考）函数2y ax bx c =++的图象如图所示，关于x 的一元二次方程240ax bx c ++-=的根的情况是（ ） A ．有两个相等的实数根B ．有两个不相等的实数根C ．只有一个实数根D ．没有实数根3．（2021·安徽安庆市第四中学九年级期中）下列表格是二次函数2y ax bx c =++中x 与y 的对应值，则方程20ax bx c ++=（a 、b 、c 为常数，0a ≠）的一个近似解是（ ）x6.17 6.18 6.19 6.20 2y ax bx c =++ −0.03 −0.010.02 0.06 A ．6.17 B ．6.18C ．6.19D ．6.20 4．（2021·陕西延安市九年级月考）如图是二次函数2y ax bx c =++() 0a ≠的图象，以下结论：①0abc >；②90a c +<；③20ax bx c ++=的两个根是12x =-，24x =；④:1:4b c =，其中正确的是（ ） A ．①③④ B ．①② C ．②③④ D ．①②③④第4题图 第8题图5．（2021·湖北武汉市九年级月考）抛物线y ＝x 2－（4a ＋1）x ＋3a 2＋3a （a 为常数）与x 轴交于A 、B 两点，若AB ＝2，则a 的值是（ ）A ．32B ．－12C ．－32或32D ．－12或326．（2021·福建省福州市九年级月考）抛物线y ＝﹣x 2＋2x ＋6在直线y ＝﹣9上截得的线段长度为（ ） A ．6 B ．7 C ．8 D ．97．（2021·江苏南通九年级月考）若二次函效242y kx x =--与x 轴有两个不同的交点，则k 的取值范围是（ ）A ．2k >-B ．2k >-且0k ≠C ．2k <D ．2k ≥-且0k ≠8．（2021·四川成都锦江区九年级期末）二次函数y ＝ax 2+bx +c （a ≠0）的大致图象如图所示，下列结论：①abc ＜0；②9a +3b +c ＜0；③a ＞3c ；④若方程ax 2+bx +c ＝0两个根x 1和x 2，则3＜|x 1﹣x 2|＜4，其中正确的结论有（ ）A ．①②③B ．①②④C ．①③④D ．②③④二、填空题9．（2021·武汉市九年级月考）若函数y ＝（k ﹣3）x 2+2x +1与x 轴有两个交点，则k 的取值范围为 ___． 10．（2021·内蒙古呼和浩特九年级月考）若函数y ＝（m ﹣1）x 2﹣6x 32+m 的图象与x 轴有且只有一个交点，则m 的值为____．11．（2021·山东青岛中学二模）抛物线222(1)y x k x k =-++-（k 为常数）与x 轴交点的个数是______． 12．（2021·陕西延安市九年级月考）下列表格是二次函数2y ax bx c =++()0a ≠中x ，y 的部分对应值，则一元二次方程20ax bx c ++=()0a ≠的一个近似解是______．（精确度0.1）第12题图 第14题图13．（2021·北京市人大附中九年级月考）若二次函数22y ax ax c =-+与x 轴的一个交点坐标为()3,0，则关于x 的方程220x ax c α-+=的实数根是______．14．（2021·浙江杭州市九年级月考）二次函数y ＝ax 2+bx +c （a ≠0）的图象如图所示，根据图象回答： （1）当y ＞0时，写出自变量x 的取值范围 ___；（2）若方程ax 2+bx +c ﹣k ＝0有两个不相等的实数根，则k 的取值范围___．三、解答题15．（2021·江苏通州九年级月考）已知二次函数()233y x k x k =-++（k 为常数）．（1）求证：无论k 为何值，该函数的图象与x 轴总有公共点；（2）当k 取什么值时，该函数的图象与y 轴的交点在x 轴上方．16．（2021·天津市九年级月考）二次函数()20y ax bx c a =++≠的图象如图所示，根据图象回答下列问题 （1）方程20ax bx c ++=的两个根是______．（2）不等式20ax bx c ++<的解集是______．（3）y 随x 的增大而减小的自变量x 的取值范围是______．（4）若方程2ax bx c k ++=无实根，则k 的取值范围是______．x 6.1 6.2 6.3 6.4 y 0.3- 0.1- 0.20.417．（2021·北京五十五中九年级月考）在平面直角坐标系xOy 中，抛物线()2440y ax ax a =-+≠与y 轴交于点A ．（1）求点A 的坐标和抛物线的对称轴；（2）过点()0,3B 作y 轴的垂线l ，若抛物线()2440y ax ax a =-+≠与直线l 有两个交点，设其中靠近y 轴的交点的横坐标为m ，且1m <，结合函数的图象，求a 得取值范围．18．（2020·安徽省安庆市九年级月考）已知抛物线y ＝（x ﹣m ）2﹣（x ﹣m ），其中m 是常数．（1）求证：不论m 为何值，该抛物线与x 轴一定有两个公共点；（2）若该抛物线的对称轴为直线x ＝2.5．把该抛物线沿y 轴向上平移多少个单位长度后，得到的抛物线与x 轴只有一个公共点？。
二年级数学下册6 .7单元测试卷2024
二年级数学下册6 .7单元测试卷2024第六单元时间：60分钟满分：100分一、基础训练营。
（49分）1. 看拼音，写字词。
（7分）2. 我会选。
（10分）（1）下面加点字的读音正确的一项是（）（2分）①毕竟（jìn）西湖六月中。
②映（yìng）日荷（hé）花别样红。
③在野外我们可以靠太阳来辨（bàn）别方向。
（2）给多音字选择正确的读音，将相应的字母写在横线上。
（8分）①A.两行 B.行走 C.银行 D.行为xíng：háng：________②A.倒立 B.倒下 C.倒茶 D.打倒dǎo：dào：________3. 用“\”划去句子中的错别字，把正确的字写在括号里。
（6分）4. 找出句子中的一组反义词填在括号里。
（6分）（1）这件事说起来容易，但做起来却很困难。
（）—（）（2）这件事情你可得保密，不能泄露半点儿消息。
（）—（）（3）下课铃一响，原本安静的校园一下子喧闹起来。
（）—（）5. 按要求写词语。
（14分）（1）填合适的词。
（6分）（）的乌云（）的空气（）的指南针（）地压下来（）地走路（）地观察（2）仿写。
（8分）例：宇（宇宙）（宇宙飞船）科（）（）展（）（）航（）（）体（）（）6. 按要求写句子。
（6分）（1）即使把杯子倒过来，水也不会往下流。
（用加点的词造句）_________________________________________________________（2）开始的欢乐知了歌唱起（连字词成句）_________________________________________________________二、综合展示厅。
（8分）7. 图书角里的图书种类太多，为了便于同学们借阅，图书管理员们对图书进行了分类，请简单列举四类。
__________________________________________________________________________________________________________________三、课本直通车。
河北省邢台市2024-2025学年三上数学第二单元人教版基础掌握测试卷
河北省邢台市2024-2025学年三上数学第二单元人教版基础掌握测试卷学校：_______ 班级：__________姓名：_______ 考号：__________（满分：100分时间：45分钟）总分栏题号一二三四五六七总分得分评卷人得分一、认真审题，填一填。
（除标注外，每空1分）1.在下面的□里填上合适的数字，使算式成立．2.2008北京奥运现在开幕。
奥运A村，是388幢房屋组成，348幢已出租，还有________幢房屋没有出租。
3.请你用下面的4个数写出答案不同的算式．48 35 52 17加法:___________ ___________ ___________ ___________减法:___________ ___________ ___________ ___________4.星星冷饮店上午卖出雪糕219根，下午卖出402根。
灵灵说这一天卖出的雪糕不到600根，她说得对吗？( )（填“对”或“不对”）请把你的理由写在括号里。
5.小马虎在做一道加法题时，把个位上的3看成5，十位的5看成3，计算的结果是54，正确的结果是( )。
6.晓东在计算两位数加两位数时，把其中一个加数十位的5看成了6，结果得78，正确的和是( )。
7.国庆节超市商品打折，妈妈买了一台微波炉用去500元，买了一台电风扇用去209元，电风扇比微波炉大约便宜( )元。
8.估算497＋204的结果大约是( )，这道算式的实际结果是( )。
9.如果a＋b＝c，那么a就等于( )；如果a－b＝c，那么a就等于( )；如果a×b＝c，那么a就等于( )。
10.摆两行同样多的○。
第一次从第一行移动4个○到第二行，第二次从第二行移动3个到第一行，这时两行相差( )个○。
11.在（）填上合适的数．98秒=( )分( )秒 1时20分=( )分3分15秒=( )秒 85分=( )时( )分74-( )=38 440+( )=690 ( )-610=13012.想一想：个位上的（ ）减（ ）不够减，从十位上退（ ），个位上的（ ）减（ ）等于（ ），十位上的（ ）减（ ）等于（ ）。
译林英语9A unit6 单元测试卷基础卷 (附答案)
九年级上Unit6单元测试基础卷（附答案）班级：姓名：得分：一．默写下列单词（20小题，每题1分，共20分）1.对话____________________ 11. 真实生活的2.迷，狂热爱好者 12. 最新的，现代的3.短信，短信息 13. 即将来临的4.喜欢动物的人 14. 富有的5.亚洲 15. 最新的，最近的6.废料，废品，浪费 16. 傻的，愚蠢的7.枪 17. 现场直播，实况直播8.或许，可能 18. 除非9.导演，指导 19. 电视报道，覆盖10.完毕，结束 20. 记录，录制二．默写下列短语（15小题，每题1分，共15分）1.访谈节目 9. 处于危险中2.感到厌烦 10. 立即，立刻3.在某人的帮助下 11. 和......一样忙4.偶然，意外的 12. 和......不同5.一些 13. 参加6.凑近看一看 14. 赢得大奖7.充满 15. 把......介绍给......8.注意三．从方框中选出合适的词并用其适当形式填空（5小题，每题1分，共5分）1．Christopher Nolan is my favourite ________ . His Batman movies are really wonderful. 2．There is lots of ________ news on hot movies in the magazine Movie View.3．Stephen Chow used to be famous for his ________, such as Fight Back To School and The God of Cookery.4．Some students are having a _____ test in the classroom.5．________ film stars now have more chances in Hollywood.四．用括号内所给词的正确形式填空（5小题，每题1分，共5分）1.This year's Beijing Music Awards will be covered (live)this Saturday.2. This big outdoor event actually depends on the weather of the (come) weekend.3.These tigers are facing much (dangerous).We must take action to protect them.4.Can’t you find his report a bit _____ (bore)?5.Although Amy was born in a (wealth) family, she never felt happy.五．完形填空（15小题，每题1分，共15分）Cowboys have lived and worked in the west and southwest of the United States for over three centuries and they are a famous symbol of the USA. When you watch those old Hollywood cowboy films from the fifties and sixties, you see a job. You see a 1 of freedom and adventure (冒冒). However, the real job of an American cowboy has always been 2 and sometimes dangerous. It is physical with long hours and low pay.Life hasn't 3 much for cowboys since the early days. Cows walk across huge plains (冒冒) to 4 the grass and the cowboy rides on his horse to bring 5 home. Like the cowboys of the past, a 21st century cowboy 6 gets up early on freezing cold mornings and makes breakfast over a fire.So why does a man--because it is usually a man become a cowboy? For some, it isn't a 7 , because they are born into the life. They have worked with 8 since they were children. They 9 the traditional cowboy culture: "It's a real life about you, your horse and the open 10 ."Some people choose the job 11 in life. Pat had an office job with the US government with high pay, 12 he didn't like city life and spending all day inside. So one day, he 13 his job and moved to a ranch (冒冒) in Texas, making much less money 14 a cowboy. He wanted job satisfaction. And for a cowboy, job satisfaction doesn't come from the money or a comfortable office. It comes from being 15 to wake up under the sky and being your own boss.( )1. A. life B. place C. way D. day( )2. A. interesting B. boring C. hard D. easy( )3. A. got B. paid C. done D. changed( )4. A. catch B. eat C. touch D. take( )5. A. it B. him C. her D. them( )6. A. just B. still C. even D. never( )7. A. problem B. choice C. plan D. dream( )8. A. parents B. brothers C. cows D. sheep( )9. A. create B. miss C. love D. refuse( )10. A. country B. culture C. mind D. cowboy( )11. A. later B. early C. quickly D. suddenly( )12. A. so B. and C. since D. but( )13. A. looked for B. took up C. gave up D. cared about( )14. A. for B. as C. with D. like( )15. A. relaxed B. slow C. late D. free六．阅读理解（5小题，每题2分，共10分）A Bite of China Season Two (《舌尖上的中国》第二季) was shown at 9:00 on CCTV-1 every Friday night from April 18 to June 6, 2014. There were altogether eight episodes (集), all about history and culture of food, eating and cooking in China. The directors spent one year visiting more than 150 different parts of China. More than 300 types of food were covered in the documentary.As an old Chinese saying goes, food is what matters most to people. It plays an important role in our daily life, and the rich food culture is also one of the most important parts of Chinese culture.A Bite of China Season Two wanted to show the joys and sadnesses of ordinary (普通的) Chinese in changing times through food.A Bite of China Season One was shown on CCTV in 2012. It attracted more than 100 million viewers. It is all about food, while the second season cared more about the relationship between the people and the food. For example, the first episode showed a young man spent four hours climbing a 40-metre-high tree to get something nice for his brother.The show reminded viewers of their homes and the tastes of childhood. One Weibo user wrote, “A Bite of China Season Two makes me have so many words to say. It makes me think of my parents and my grandmother. I haven’t been home for a long time, so I have decided to go back in a few days.”The show used food as a window to introduce China to the world. Viewers can see how Chinese people love life by loving food. Anyone who wants to know more about Chinese culture and Chinese society should have a bite of the program.( )1. How many types of food were covered in this program?A. 150.B. More than 150.C. 300.D. More than 300.( )2.The type of the TV program A Bite of China is _______.A. a cartoonB. a documentaryC. a chat showD. a drama series( )3. What’s the Chinese meaning of the underlined sentence?A. 粒粒皆辛苦B. 民以食为天C. 一顿不吃饿得慌D. 吃一堑，长一智( )4. The third paragraph mainly talks about _______.A. the details of the first episodeB. the rich types of food of ChinaC. the relationship between the people and the foodD. the difference between Season One and Season Two( )5. Which of the following is NOT mentioned in the passage?A. The show used food as a window to introduce China, to the world.B. The show told people about history and culture of food in China.C. The show explained to people why Chinese people love life.D. The show reminded viewers of their homes and the tastes of childhood.七．任务型阅读，阅读短文回答问题（5小题，每题2分，共10分）Would you like to go back in time and discover what life used to be like over a hundred years ago? Well, that was the subject of a TV programme in the USA. It was called Frontier House. Three American families were chosen to live in the hills of Montana for five months.Each family was given their own land and they lived there from June to October. They followed the same way of life as their ancestors (冒冒) over a hundred years ago in the Wild West. They could only use the tools and technology of that time. They learnt many new skills. They became farmers, looking after animals and growing food to eat. They made butter and caught fish.There was no electricity, so at night they had oil lamps. There was no television and no radio so they read the Bible and talked in the evening. They collected wood to do their cooking and to heat their water. They wore the same kind of clothes that people in the 1880s used to wear. Of course, there were no washing machines in those days so they washed all their clothes by hand. When they needed to buy things, they went ten miles to the store with their horse and wagon (冒冒冒冒). The journey took eight hours.All the families said that they missed their friends, because they couldn’t take their mobile phones or their computers with them and they could only write letters. But everyone said they loved their “new” life and they were all sorry to leave.1. What did the three families do in the programme Frontier House?______________________________________________________2. What kind of tools and technology could the three families use?______________________________________________________3. How did the three American families spend their evenings?______________________________________________________4. How long did it take the three families to get to the store?______________________________________________________5. Did the three families enjoy their life in the Wild West?______________________________________________________八．写作(20分）请根据你校的校刊MY FA VOURITE TV PROGRAM栏目的征稿内容，写一篇英语短文刊投稿。
【9A文】计算机网络基础试题(十套试卷附答案)
计算机网络基础试题计算机网络试题《一》一、单项选择题01.1965年科学家提出超文本概念，其超文本的核心是___A___。
A.链接B.网络C.图像D.声音02.地址栏中输入的中，是一个__A____。
A.域名B.文件C.邮箱D.国家03.通常所说的ADSL是指__A___。
A.上网方式B.电脑品牌C.网络服务商D.网页制作技术04.下列四项中表示电子邮件地址的是__A___。
A.ks@B.192.168.0.105.浏览网页过程中，当鼠标移动到已设置了超链接的区域时，鼠标指针形状一般变为___A___。
A.小手形状B.双向箭头C.禁止图案D.下拉箭头06.下列四项中表示域名的是__A____。
B.hk@C.zjwww@D.202.96.68.123407.下列软件中可以查看WWW信息的是_D__。
A.游戏软件B.财务软件C.杀毒软件D.浏览器软件08.电子邮件地址stu@中的是代表_D_A.用户名B.学校名C.学生姓名D.邮件服务器名称09.设置文件夹共享属性时，可以选择的三种访问类型为完全控制、更改和_B__。
A.共享B.只读C.不完全D.不共享10.计算机网络最突出的特点是_A___。
A.资源共享B.运算精度高C.运算速度快D.内存容量大11.E-mail地址的格式是__C____。
B.网址•用户名C.账号@邮件服务器名称D.用户名•邮件服务器名称12.为了使自己的文件让其他同学浏览，又不想让他们修改文件，一般可将包含该文件的文件夹共享属性的访问类型设置为__C____。
A.隐藏B.完全C.只读D.不共享13.InternetERplorer(IE)浏览器的收藏夹的主要作用是收藏__C____。
A.图片B.邮件C.网址D.文档14.网址中的cn表示__D____。
A.英国B.美国C.日本D.中国15.在因特网上专门用于传输文件的协议是_A_。
A.FTPB.HTTPC.NEWSD.Word是指__A____。
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9A 英语基础天天练（一）
姓名：班级：
I．单选
（）1. The film, The Barber, directed by Chen Yifei, was first shown ________ Shanghai _______ April 9, 2006.
A. in…on
B. on…in
C. at…on
D. in…in
（）2. It’s about half ________ hour’s walk from here to _________ nearest underground station.
A. a…the
B. an…the
C. /…the
D. the…a
（）3. Generally speaking, I don’t enjoy _______, but I’d like _______ this afternoon.
A. to swim … to swim
B. to swim … swimming
C. swimming … to swim
D. swimming … swimming
（）4. I ______ the way. I ________ here for many years.
A. knew, have lived
B. knew, live
C. know, have lived
D. know, live
（）5. Betty, we have only _______ milk in the fridge. Would you please buy some now?
A. a little
B. little
C. few
D. a few
（）6. The old man is _______ thankful that he almost comes to tears.
A. too
B. so
C. very
D. as
（）7. With the help of the policeman, the lost money was sent to the bank _______.
A. safe
B. secure
C. safety
D. securely
（）8. Some people enjoy traveling by plane, but ___________ prefer traveling by train.
A. other
B. the others
C. the other
D. others
（）9. ___________they are listening to the teacher!
A. How careful
B. What careful
C. How carefully
D. What carefully
（）10. ----Must I finish reading the book today?
----No. You ________ if you have something else to do.
A. mustn’t
B. couldn’t
C. can’t
D. don’t have to
II．词性转换
11. Could you tell me who _________ the first lift in 1853? (invention )
12. Many people will enjoy _________ when they are looking at their pet fish. (they)
13. It is my _______ time to visit the Great Wall in Beijing. (one)
14. A famous writer will give _______ a speech this Saturday. (we)
15. We had a _________ about the differences between the two countries.(discuss)
16. Mrs. Green is _________ with her diet because she wants to be healthy. (care))
17. I changed into my sports shoes so that I could walk more ______________.(comfortable)
18. The girl often helps her mother do some __________ on Sunday. (clean)
19. Oriental Pearl TV Tower is one of the __________ TV towers in the world. (high)
20. Susan’s brother wants to be a _________ when he grows up. (lead)
III．句子改写
21. Mary bought some hamburgers in KFC the day before yesterday. (改为否定句)
Mary __________ __________ any hamburgers in KFC the day before yesterday.
22. Mr. Blair got into the office. He had got a cup of coffee in his hand.（合并成一句）Mr. Blair ____________ the office ___________ a cup of coffee in his hand.
23. They helped us so much that we could finish the work in time. (保持原句意思)
______ the ______ of them, we could finish the work in time.
24. Mary makes quite a few friends in Shanghai. （改成反意疑问句）
Mary makes quite a few friends in Shanghai, ________ ________?
25. Mrs. White will come back from Singapore in three months.（对划线部分提问）
________ _______ will Mrs. White come back from Singapore?
26. They captured the city through a trick. （对划线部分提问）
_________ _________ they capture the city?
27. I have never seen such a handsome boy. (保持原句意思)
He is the _________ handsome boy that I have _______ seen.
28. We will have a barbecue in the forest park if it does n’t rain this Sunday. (句意基本不变)
We will have a barbecue in the forest park __________ it __________ this Sunday.
29. Would you please tell me how I should deal with it for the time being? (改为简单句)
Would you please tell me __________ __________ deal with it for the time being?
30. Martin has studied in Fudan University since November 2006. (对划线部分提问)
__________ __________ has Martin studied in Fudan University?。