最新北师大版2018-2019学年八年级英语上学期期末模拟检测试题及答案-精编试题
2019—2020年最新北师大版八年级英语上学期期末模拟检测试题及答案【精品提分试卷】.doc
第一学期期末模拟教学质量检测八年级英语试卷（总分：100分时间：100分钟）第І卷（共60分）Ⅰ.单项选择。
（每小题1分，共15分）1．It takes ________ hour to get there by bus．A．a B．an C．the D．/2．The story just describes ________ is happening all over the world．A．where B．when C．what D．why3．I was trying to pick it up ________ it bit me again．A．while B．as C．when D．if4．________ the building quickly，but ________ use the lift．A．Leave；don’t B．Leaving；don’t C．Leave；not D．Leaving；not 5．A white rabbit ________ pink eyes ran by．A．with B．by C．of D．for6．8,742 should be read as ________．A．eighty-seven forty-twoB．eighty-seven hundred forty-twoC．eight thousand and seven hundred，forty-twoD．eight thousand，seven hundred and forty-two7．——Does your brother __________ play soccer?——Yes．He plays it every day.A．often B．never C．hardly ever D．sometimes8．Our son is going to study medicine when he __________ school.A．leave B．leaves C．is leaving D．left 9．——Will you go boating this Saturday?——___________．We will camp by lake.A．Yes, we will．B．No, we won’t．C．Yes, we do D．No, wedon’t.10．——Do you kno w Lin Shuhao?——Yes, he is one of ____________ basketball player in NBA.A．popular B．more popularC．the most popular D．the more popular11．——We’ll have a picnic _______ it doesn’t rain tomorrow.——Have a nice day.A．when B．because C．if D．since 12．Susan, get some eggs and butter and _________.A．mix up them B．mix them up C．mix up it D．mix it up 13．——Can you go camping with me tomorrow?——_________.A．No, I don’t．B．Sure. C．No, I can’t．D．Let’s make it.14．What ________ if I ________ to turn off water?A．will happen; forget B．Will happen; will forgetC．happen; forget D．happen; will forget15．——_________ are these oranges and pears?——About thirty yuan.A．How much B．How many C．How long D．How far Ⅱ．完形填空。
2024-2025学年北师大版初二英语上册期中监测试题及答案
2024-2025学年北师大版初二英语上册期中监测试题班级：____________________ 学号：____________________ 姓名：____________________ 一、听力题（每题3分）Question 1:What time does the school start?A. 7:30 am.B. 8:00 am.C. 8:30 am.Answer: AQuestion 2:How does the girl usually go to school?A. By bike.B. On foot.C. By bus.Answer: BQuestion 3:Where does the boy want to go for his summer vacation?A. Beijing.B. Shanghai.C. Hainan.Answer: CQuestion 4:What’s the weather like today?A. Sunny.B. Cloudy.C. Rainy.Answer: AQuestion 5:What’s the girl’s favorite subject?A. English.B. Math.C. Science.Answer: ANote: The actual listening material for these questions would be a recorded audio file that matches the questions and answers provided.二、单选题（每题3分）1.What’s this in English?A. It’s a book.B. It’s a ruler.C. It’s a pen.D. It’s a pencil box. Answer: A2.Good morning, _______!A. Miss WangB. Wang MissC. Miss wangD. wang MissAnswer: A3.—Hello, I’m Tom.—Hello, Tom._______A. I’m Gina.B. This is Gina.C. She’s Gina.D. He’s Gina.Answer: A4.—What color is the jacket? —It’s_______jacket.A. a blueB. an orangeC. the redD. /Answer: B5.—What’s your telephone number?—_______A. I’m fine.B. It’s 567-8901.C. I’m Alice.D. My name is Mike.Answer: B三、多选题（每题4分）Question 1: (4 points)Which of the following are correct sentences? (Select all that apply.)A. I am go to school.B. She likes play the piano.C. They want to eat an apple.D. He doesn’t have any money.E. She’s reading a book.Answers: C, D, EQuestion 2: (4 points)Which of the following are countable nouns? (Select all that apply.)A. MilkB. BreadC. ApplesD. WaterE. BooksAnswers: C, EQuestion 3: (4 points)Choose the correct prepositions for the following sentences. (Select all that apply.)A. The cat is_______the table.B. The book is_______the shelf.C. She is sitting_______the chair.D. The ball is under the bed.E. The bird is flying_______the sky.Options:i.onii.iniii.underiv.aboveAnswers:A: iB: iC: iE: iiQuestion 4: (4 points)Match the correct questions with their answers. (Select all that apply.) Questions:1.What’s your favorite color?2.How old are you?3.Where do you live?4.Who is your best friend?Answers:A. I’m 14 years old.B. My favorite color is blue.C. My best friend is John.D. I live in New York.Answers:1: B2: A3: D4: CQuestion 5: (4 points)Choose the correct word that completes the sentence. (Select all that apply.)The_______is big and bright. It has four_______and a _______.Options:i.roomii.dooriii.windowiv.bedAnswers:i, iii, iv (Note: The second blank could also be filled with “doors” if “two” were specified, but since it says “four,” we assume “window” is the intended match.)四、阅读理解（每题4分）Title: The Magic of BooksBooks have always been a source of magic and knowledge for me. As a child, I would spend hours lost in the world of fairy tales and adventure stories. I remember the excitement of turning each page, wondering what new adventure awaited me.As I grew older, my taste in books changed. I started reading books about science, history, and even philosophy. Each book opened a new window to a different world, allowing me to explore ideas and concepts that I had never considered before.One of the most valuable things I learned from reading is the ability to empathize. By reading about the lives and struggles of others, I gained a deeper understanding of the complexities of human nature. This has helped me become a more compassionate and understanding person.Books have also been a great source of inspiration for me. Many times, I have found myself facing a challenge or obstacle and have been able to find motivation or a solution in a book. The words of wise authors have guided me through difficult times and have helped me find my way forward.In conclusion, books have played an integral role in shaping who I am today. They have taught me valuable lessons, broadened my horizons, and have provided me with endless hours of entertainment. I am grateful for the magic of books and the impact they have had on my life.Questions:1.What was the author’s favorite type of books when he was a child? (4 points)Answer: Fairy tales and adventure stories.2.How did the author’s taste in books change as he grew older? (4 points)Answer: He started reading books about science, history, and even philosophy.3.What valuable thing did the author learn from reading? (4 points)Answer: The ability to empathize.4.How did books inspire the author? (4 points)Answer: By providing motivation and solutions to challenges he faced.5.What role have books played in shaping the author’s identity? (4 points)Answer: They have taught him valuable lessons, broadened his horizons, and provided him with endless hours of entertainment.五、作文（30分）Title: My Favorite TeacherDirections: Write a short essay about your favorite teacher. Describe why you likehim/her and what makes him/her special. You should write at least 80 words. Example:My favorite teacher is Mrs. Smith, our English teacher. I like her because she always makes learning English fun and exciting. She uses creative methods to teach us, like role-plays and group discussions. Not only is she a good teacher, but she is also a great listener. Whenever I have problems or questions, she is always there to help. Mrs. Smith’s passion for teaching and her kindness towards us students make her truly special. I am very grateful to have her as my teacher.Your Essay:(You can use the same format as the example, but write about a different teacher and your own unique experiences.)My favorite teacher is Mr. Johnson, our math teacher. He is the kind of teacher who can make complex math concepts seem simple and understandable. His enthusiasm for the subject is contagious, and I always find myself eager to learn more. Mr. Johnson also encourages us to think critically and problem-solve independently. His patience and dedication to teaching have inspired me to excel in math. I am truly grateful for his guidance and support.。
2018-2019学年度北师大版初二英语第二学期期末考试试题(含答案)
2018～2019学年度八年级英语第二学期期末测试题第一部分 听力部分 Ⅰ.关键词语选择（共5小题；每小题1分，满分15分）你将听到五个句子。
请在每小题所给的A 、B 、C 三个选项中选出一个你所听到的单词或短语。
每个句子读两遍。
( )1. A. help B. hope C. hold ( )2. A. plants B. pollutes C. plans ( )3. A. wrong B. long C. along ( )4. A. camera B. alarm C. report ( )5. A. cut out B. clear out C. take out Ⅱ.短对话理解（共10小题；每小题1分，满分10分）你将听到十段对话，每段对话后有一个小题。
请在每小题所给的A 、B 、C 三个选项中选出一个最佳选项。
每段对话读两遍。
( )6. What did Tony do last weekend? ( )7. Where is the man ’s father? ( )8. Where would the man like to go? ( )9. What is Jane probably doing now? ( )10. What will Ann ’s brother give her? ( )11. What will the weather be like? A. Sunny. B. Cloudy. C. Rainy. ( )12. When will the supermarket close? A. At 5:00. B. At 5:15. C. At 4:45. ( )13. How much is the white shirt? A. 20 yuan. B. 40 yuan. C. 80 yuan. ( )14. Who likes doing housework?A. Robert.B. Karen.C. Karen ’s sister.( )15. What would Mr. Brown like to have?A. Tea.B. Milk.C. Coffee.Ⅲ.长对话理解（共5小题；每小题1分，满分5分）你将听到两段对话，每段对话后有几个小题。
北师大版八年级上英语期末测试题及答案
北师大版八年级上英语期末测试题及答案第一部分选择题（共25个小题，每题1分，满分25分）1. - How do you like the movie?- __B__. It's very interesting.A. Never mindB. I like it very muchC. It doesn't matterD. I hope so2. - What does your father do?- __C__. He is a doctor.A. SorryB. Excuse meC. He is a doctorD. Don't mention it...第二部分非选择题（共30个小题，每题2分，满分60分）1. 根据短文内容，回答问题。
My name is Tom. I'm from the United States. I am twelve years old.I live in New York with my parents and my sister. I go to school from Monday to Friday. I like reading books and playing basketball. My favorite subject is English. I can speak a little Chinese. I want to visit China one day.Question: Where does Tom live?Answer: __He lives in New York.__...第三部分写作（满分15分）请根据下列要点写一篇介绍你的家乡的短文：1.所在省市；2.地理位置和面积；3.人口和民族分布；4.风景和名胜；5.特色食物；6.你对家乡的感受。
答案略以上是北师大版八年级上英语期末测试题及答案。
最新2018-2019学年北师大版八年级英语上册期末模拟测试及答案-精编试题
第一学期期末模拟教学质量检测八年级英语试卷一、选择题1.I bought _____ for my parents, but I bought _____ for my brother.A. anything; nothingB. anything; somethingC. something; nothingD .nothing; anything2. The story was very _____, so w e all felt________.A. boring; boredB. bored ; boring C .boring; boringD. bored; bored3. Don’t worry about him, He is _____ to drive a car.A. Enough oldB. old enoughC. enough friendlyD .friendly enough4. Betty _____ eats junk food, so you see, she is pretty healthy.A .usually B. often C. always D. never5.—______do you have an art festival in your school?—Once a year.A .How long B. How often C. How far D. How soon6. Milk is _____ our health.A. good withB. good atC. good forD. bad for7. —Who get up ______ , your father or your mother?—My mother.A. earlyB. earlierC. earliestD. the earliest8. In fact , listening is just as_____ as speaking in language learning.A. Important B .more important C. more difficult D. more interesting9. The boy is good at _____ jokes and he often makes us______.A. telling; laughB. telling; to laughC.tell; laughD.tell; to laugh10. We can buy books_____ in this store in our city.A. cheapB. the cheapestC. cheaperD. the most cheaply 二．完形填空（每小题2分，共20分）Last Sunday we had a g reat trip. My father, my mother and I __11__to summercamp. We went to the mountains. First we _12____ the foot of the mountain__13___bus. In the middle of the mountain there was a river.The water in the river was clean and clear. I washed my face__14____ the water. It ws warm. There _15____some fishes in the river.In the mountain there were flowers. They were __16__ .At noon, many people got together, and they were very_17____ .We made our meal in the mountain. The food was very __18___, and we liked it very much. After the meal, we went on our trip. We felt __19___. It was really __20____.11. A. go B. goes C. went D. to go12. A .get B. got C. got to D. arrived13. A.by B. on C.in D. for14. A. on B. with C.in D. Into15. A.is B. was C. were D .are16. A. ugly B .beautiful C. awful D. delicious17. A. friendly B. sad C .busy D .unhappy18. A. nice B. terrible C. bad D .cheap19. A. happy B. unhappy C. friendly D. Interesting20. A. excited B. relaxed C. fun D.boring三．阅读理解（每小题2分，共30分）AMy grandfather Jack is 96 years old，and he has had an interesting life.He has travelled a lot in his life in the Far East.He visited the Taj Mahal in India and the Pyramids in Egypt.He hunted (狩猎) lions in Africa，and rode a camel in the Sahara Desert.He says the most beautiful place he has travelled to is Kathmandu in Nepal.Jack has married twice.His first wife died when she was 32.He met his second wife Maria while he was cycling round France.They have been married for 50 years，and they have lived happily in a small village since they got married. Jack says that he has never been ill in his life. The secret of good health，according to my grandfather，is exercise. He goes swimming every morning .He has done this since he was a boy. He also hasa glass of wine every night！Perhaps that is his secret!21.What kind of life has Jack lived?A．A short life. B．An interesting life.C．A lonely life. D．A poor life.22．Which of the following does Jack think is the most beautiful place? A．Kathmandu. B．The Pyramids.C．The Sahara Desert. D．Taj Mahal. 23．How many times has Jack married?A．Once. B．Twice.C．Three times. D．Four times.24.Where did Jack meet Maria?A．In India. B．In Nepal.C．In France. D．In Egypt.25.What does Jack do every night?A．He has a glass of wine. B．He goes swimming.C．He hunts lions. D．He rides a camel.BAmerican footballIn almost every big university(大学) in the USA, football is a favourite sport. American football is not like soccer. Player s sometimes kick the ball, but they also throw the ba ll and run with it. They try to take it to the other end of the field. They have four chances to move the ball ten yards. They can carry it or throw it If they move it to the end of the field, they win six points. This is called a touchdown.It is difficult to move the ball. Eleven men on the team try to stop the man with the ball. If the man does not move the ball ten yards, his team kicks the ball to the other team.Each university wants its team win. Thousands of people come to watch. They all yell (助威，加油）for their favourite team. Young men and women from the cheerTeam dance and jump while they yell.Each team plays ten or eleven games each season. The season begins in September and ends in November. If a team is very good, it may play another game after the season ends. The best team plays again on January 1st,the first day of the New Year. Many people go to see these games and many others watch them on television.26.American football is ____________.A.the same as soccerB.only popular in the big universities in the USAC.a game played only with feetD.a game with ten players27.To win six points the players in a team must ____________.A. kick the ball ten yardsB.kick the ball to the other teamC.move the ball to the end of the fieldD. throw the ball to the sky28.If the man does not move the ball ten yards,____________.A.his team loses a pointB.the other team kicks the ball to the end of the fieldC.his team kicks the ball to the other team.D.his team wins six points29.Each university wi ll have ____________ to help them win the game.A.thousands of peopleB.a cheer teamC.a favourite teamD.a good player30.It is a very important sport because ____________.A .many people like itB .thousands of people play itC. the best team will play on New Year's Day .D. many universities have this gameCJim, with his father, goes to see his grandfather. In the train Jim often puts his headout of the window. His father says,“Jim! Don’t put your head out of the window!”But J im goes on putting his head out of the window. Here his father takes Jim’s cap quietly, hides（藏）it behind his back and says,“You see your cap is gone.”Jim is afraid.His father says,“Well, whistle（吹口哨）once. Perhaps your cap will come back.”Jim whistles. His father puts quickly the cap on Jim’s head.Oh! It’s wonderful! Jim laughs. He quickly takes his father’s cap and throws it out of the window. “Now it’s your turn to whistle, Dad!”He says happily. Write T or F.31．Jim and his father go to see his grandfather by bus.32．Jim’s father tells Jim not to put his head out of the window. 33．Jim’s father takes Jim’s cap and hides it behind his back. 34．Jim doesn’t want to have his cap back.35．Jim takes his father’s cap and throws it out of the window.四.用所给词的正确形式填空（每小题1分，共10分）36. I want______(buy) a book.37. He’d like _______ (go) with tom.38.They all enjoy _______ (speak) English.39.This story is as _________ (interest) as that one.40.He is much __________ (athletic).41.This coat is pretty _________ (beautiful).42.Thanks for _______ (ask) me.43.They _____ (be) also students five years ago.44.I have to _______ (visit) my best friend Lin, tomorrow.45.How often does Tom_________ (get to) there?五. 情景交际从下列句子中选择合适的句子，填到横线上（每小题2分，共10分）W: Hello, this is Sally speaking.M: Hello, this is Bob.W: 46._______________________M: Rea ding a book.W: 47._____________________ we can watch a video.M: OK. 48.____________________________W: Go along Peace Street. When you get to the second traffic lights, turn left. At the end of the street, you'll see a new hotel.M: Oh, OK. I know where that is. 49.____________________.W: Yes. My house is across from the supermarket.M: OK. 50.____________________________________.A. How can I get to your house?B. There's a small supermarket next to the hotel.C. It's on the right.D. Do you want to come over to my house?E. What do you do?F. What are you doing?G. I'll see you at two thirty.六．书面表达（10）请以”My best friend”为题写一篇介绍你朋友的短文。
2024-2025学年北师大版初二英语上册暑假预习试题及答案
2024-2025学年北师大版初二英语上册暑假预习试题班级：____________________ 学号：____________________ 姓名：____________________一、听力题（每题3分）1.What time does the school start?A. 8:00 a.m.B. 8:30 a.m.C. 9:00 a.m.(Answer: B)2.How does the girl usually go to school?A. By bus.B. By bike.C. On foot.(Answer: A)3.What is the weather like today?A. Sunny.B. Cloudy.C. Rainy.(Answer: C)4.Where are the speakers going for the weekend?A. The zoo.B. The mountains.C. The beach.(Answer: B)5.What does the teacher ask the students to bring to class tomorrow?A. Their homework.B. Their textbooks.C. Their art projects.(Answer: C)Note: The listening recordings for these questions would contain sample dialogues or short descriptions matching the questions and answers provided.二、单选题（每题3分）Question 1:Which of the following words is pronounced as /tʃɪp/?A. chipB. shipC. shippedD. cheapAnswer: AQuestion 2:Do you like going hiking in the mountains?Yes, I find_______great fun.A. itB. thatC. thisD. themAnswer: AQuestion 3:Tom’s parents were proud of_______when he won the first prize in the English speech contest.A. himB. hisC. himselfD. heAnswer: AQuestion 4:The teacher asked us_______the new words after class.A. to readB. readC. readingD. readsAnswer: AQuestion 5:I don’t know if it_______tomorrow. If it _______, we’ll have a picnic.A. will rain; doesn’t rainB. rains; won’t rainC. will rain; won’t rainD. rains; doesn’t rainAnswer: A三、多选题（每题4分）Question 1:Which of the following sentences are correct? (Choose two.)A. She eats an apple every day.B. I like play football with my friends.C. He goes to school by bike every morning.D. She don’t like vegetables.Answer: A, CExplanation:A is correct because it uses the correct verb form “eats” and agrees with the subject “She”.C is correct because it uses the correct preposition “by” and verb form “goes”.B should be “I like playing football with my friends” (using present participle after “like”).D should be “She doesn’t like vegetables” (using the correct verb form “doesn’t”).Question 2:Which two sentences are examples of the present perfect tense?A. He has been to the museum.B. She is playing the piano.C. We visited the zoo last week.D. They have finished their homework.Answer: A, DExplanation:A uses the present perfect tense with “has been” to refer to a past event that has relevance to the present.D uses the present perfect tense with “have finished” to indicate a completed action in the past that has a connection to the present.B is the present continuous tense.C is the simple past tense.Question 3:Which two of the following pairs of words are synonyms?A. Small - BigB. Happy - SadC. Fast - QuickD. Tall - ShortAnswer: CExplanation:C is the only pair that consists of synonyms. “Fast” and “quick” both mean迅速.A, B, and D are antonyms (opposites).Note: Since this question asks for two synonym pairs, but there is only one correct pair, we’ll ass ume this is a mistake and consider C as the only correct answer.Question 4:Which two of the following are correct ways to ask someone’s name?A. What’s your name?B. How’s your name?C. Who’s your name?D. What name is you?Answer: AExplanation:A is th e correct way to ask someone’s name.B, C, and D are incorrect. The correct forms would be “What’s your name?” or “May I know your name?”Note: Since this question asks for two correct ways, but there is only one correct option, we’ll assume this is a mistake and consider A as the only correct answer.Question 5:Which two of the following are correct ways to express future plans?A. I will go to the beach tomorrow.B. I am going to the beach tomorrow.C. I go to the beach tomorrow.D. I went to the beach tomorrow.Answer: A, BExplanation:A andB are both correct ways to express future plans. “Will” and “going to” are both used to talk about future plans or intentions.C is the simple present tense and doesn’t express future plans.D is the past tense and cannot be used to express future plans.四、阅读理解（每题4分）Reading ComprehensionPassage:Summer vacation is finally here, and many students are looking forward to a break from the daily school routine. However, some students choose to utilize this time to preview the next semester’s content. This can be especially beneficial for subjects like English, where constant practice and exposure to new vocabulary are essential.In the upcoming semester, students will be introduced to a variety of topics in English, ranging from literature and culture to grammar and writing skills. Previewing the materials can help students identify areas that they may need extra attention. For example, if a student finds a particular grammar rule confusing, they can focus on understanding it before the semester starts.Moreover, previewing can also boost a student’s confidence. Knowing what to expect in class can alleviate some of the anxiety that students may feel when starting a new semester. It also allows students to make a plan for their studies, ensuring that they allocate enough time to each topic.While previewing, it is important to remember that it is not a substitute for classroom learning. The purpose is to familiarize oneself with the content and identify areas for improvement, not to master everything. With this in mind, students can make the most of their summer vacation and be well-prepared for the upcoming semester.Questions:1.What is the main benefit of previewing materials for the next semester’s Englishcourse? (4 points)Answer: The main benefit is that it can help students identify areas that they may need extra attention and boost their confidence for the new semester.2.According to the passage, what topics will students be introduced to in the upcomingsemester’s English course? (4 points)Answer: Students will be introduced to topics ranging from literature and culture to grammar and writing skills.3.Why is constant practice and exposure to new vocabulary essential in English? (4points)Answer: Constant practice and exposure to new vocabulary are essential in English because they help students improve their language skills and vocabulary base.4.What is NOT the purpose of previewing according to the passage? (4 points)Answer: The purpose of previewing is NOT to master everything but to familiarize oneself with the content and identify areas for improvement.5.How can previewing help reduce anxiety when starting a new semester? (4 points)Answer: Previewing can help reduce anxiety when starting a new semester by allowing students to know what to expect in class and alleviate some of the uncertainty.五、作文（30分）Title: My Summer PlanDirections: Write a short composition about your summer plan. You should include what you plan to do during the summer break, why you have chosen these activities, and how you think they will benefit you.Example:My Summer PlanWith the approaching summer break, I have been eagerly anticipating the opportunity to make the most of this precious time. My summer plan is filled with a variety of activities that aim to not only entertain me but also enrich my knowledge and skills.Firstly, I plan to spend a significant amount of time reading. I have a long list of books that I have been wanting to read, ranging from classic literature to contemporary fiction.Reading not only provides me with a much-needed escape from the daily grind but also broadens my horizons and enhances my vocabulary.Secondly, I intend to take up a new hobby - painting. I have always admired the beauty of art and believe that it is a form of self-expression. By dedicating time to this new hobby, I hope to improve my creativity and learn to appreciate the finer details in life.Lastly, I have decided to volunteer at a local community center. This experience will not only allow me to contribute to society but also help me develop a sense of responsibility and empathy. Interacting with people from diverse backgrounds will also enhance my interpersonal skills.In conclusion, my summer plan is a blend of personal growth and community involvement. I am confident that these activities will not only make my summer break memorable but also prepare me for the challenges that lie ahead in the coming school year.。
6.1平均数例题与讲解(2018-2019学年北师大八年级上)
1 平均数1．算术平均数一般地，对于n 个数x 1，x 2，x 3，…，x n ，我们把1n(x 1＋x 2＋x 3＋…＋x n )叫做这n 个数的算术平均数，简称平均数，记作x .平均数反映了一组数据的集中趋势，它是一组数据的波动大小的基准．如果需要了解一组数据的平均水平时，可计算这组数据的平均数．谈重点 确定平均数一组数据的平均数是唯一的，与数列的排列顺序无关；另外平均数要带单位，它的单位与原数据单位一致．【例1】 某油桃种植户今年喜获丰收，他从采摘的一批总质量为900 kg 的油桃中随机抽取了10个油桃，称得其质量(单位：g)分别为：106,99,100,113,111,97,104,112,98,110.(1)估计这批油桃中每个油桃的平均质量；(2)若质量不小于110 g 的油桃可定为优级，估计这批油桃中，优级油桃占油桃总数的百分之几？达到优级的油桃有多少千克？分析：随机抽取的部分个体的平均数约等于总体的平均数． 解：(1)x ＝110(106＋99＋100＋113＋111＋97＋104＋112＋98＋110)＝105(g)，由此估计这一批油桃中，每个油桃的平均质量为105 g ；(2)410×100%＝40%,900×40%＝360(kg)， 估计这一批油桃中优级油桃占总数的40%，其质量为360 kg.2．加权平均数如果n 个数中，x 1出现f 1次，x 2出现f 2次，…，x k 出现f k 次(这里f 1＋f 2＋…＋f k ＝n )，那么，根据平均数的定义，这几个数的平均数可以表示为x ＝1n(x 1f 1＋x 2f 2＋…＋x k f k )，这样求得的平均数叫做加权平均数．其中f 1，f 2，…，f k 叫做权．点评：各个数据对应的权，表示这个数据的重要程度，权越大表示越重要．【例2】捐款(元)5 10 15 20 25 30 人数11 9 6 2 1 1 (1)(2)求出这30名同学捐款的平均数．分析：计算平均数时，要先看看使用哪一个公式，带有权的问题应该用加权平均数公式． 解：(1)5×11＋10×9＋15×6＋20×2＋25×1＋30×1＝330(元)．(2)330÷30＝11(元)．所以这个班级捐款总数是330元；这30名同学捐款的平均数为11元．3．求平均数的三种方法平均数反映了一组数据的集中趋势，它是一组数据的“重心”，是度量一组数据波动大小的最重要的因素．如果要了解一组数据的平均水平，就需要计算这组数据的平均数，常用的方法有以下三种：(1)定义法：当所给数据x 1，x 2，x 3，…，x n 比较分散时，一般选用定义公式：x ＝1n(x 1＋x 2＋x 3＋…＋x n )计算平均数．(2)新数据法：当所给的数据都在某一常数a 的上下波动时，一般选用简化公式：x ＝x ′＋a (x i ＝x ′i ＋a ，其中i ＝1,2，…，n )，其中，常数a 通常取接近这组数据的平均数的较“整”的数．(3)加权平均数法：当所给数据重复出现时，一般选用加权平均数公式x ＝1n(x 1f 1＋x 2f 2＋…＋x k f k )，其中f 1＋f 2＋…＋f k ＝n .【例3】 公交508路总站设在一居民小区附近．为了了解高峰时段从总站乘车出行的人数，随机抽查了10个班次的乘车人数，结果如下：20 23 26 25 29 28 30 25 21 23(1)计算这10个班次乘车人数的平均数；(2)如果在高峰时段从总站共发车60个班次，根据上面的计算结果，估计在高峰时段从总站乘该路车出行的乘客共有多少人？解：(1)取a ＝25，则相应新数据为：－5，－2,1,0,4,3,5,0，－4，－2.∵新数据的平均数为 x ′＝－5－2＋1＋0＋4＋3＋5＋0－4－210＝0， ∴x ＝x ′＋a ＝25.(2)∵25×60＝1 500，∴乘该路车出行的乘客共有1 500人．析规律 灵活求平均数同学们在解决有关平均数问题时，应该根据所给数据的特征，灵活选用这三种方法求解．当一组数据中有不少的数据重复时，可以使用加权平均数公式来计算平均数，其中尤其应注意各“权”之和等于各数据之和．4．平均数的应用 平均数是数据的典型代表，它能刻画一组数据的“平均水平”，在实际生活中有着广泛的应用，也是中考考查的重点内容之一．(1)由一组数据的平均数，求另一组数据的平均数．(2)利用加权平均数进行决策．各项成绩的权不同，说明各项成绩的重要程度不同．(3)用平均数进行估算．统计中常用样本来估计总体的方法获得对总体的认识，在实际生活中也常用样本平均数来估计总体平均数．实际问题中，一组数据中的各个数据的“重要程度”未必相同．因而，在计算这组数据的平均数时，往往给每个数据一个“权”，反映数据的相对“重要程度”，即通过选用不同的权重计算出平均数，来评价某一具体问题． 【例4】 某公司对应聘者进行面试，按专业知识、工作经验、仪表形象给应聘者打分，这三个方面的重要对应聘的王丽、张瑛两人的打分如下：工作经验解析：专业知识、工作经验、仪表形象的重要性之比为6∶3∶1.则王丽的平均成绩为14×6＋16×3＋18×110＝15，张瑛的平均成绩为18×6＋16×3＋12×110＝16.8，显然张瑛的成绩高一些，应该录用张瑛．答案：张瑛析规律 权的含义侧重不同的权重，计算的加权平均数的值不同，数据的权能够反映出数据的相对“重要程度”．。
北师大版2019年八年级上学期英语期末考试试卷(I)卷
北师大版2019年八年级上学期英语期末考试试卷（I）卷一、单选题 (共20题；共40分)1. （2分）There is in today's magazine.A . new somethingB . nothing newC . new nothingD . anything new2. （2分）There are many trees ________ side of the road and ________ of the trees is growing larger and larger．A . on both; the numberB . on each; a numberC . on each; the numberD . on every; the number3. （2分）It is stupid of you to make such a decision.A . correctB . sillyC . clever4. （2分）The food smells and sells .A . good; wellB . good; goodC . well; good5. （2分）English isn't as as Chinese．A . easyB . easilyC . easierD . easiest6. （2分）（2015.湖北孝感）—Which do young people prefer, music or sports? —Both. Music is ________ sports.A . as popular asB . not as popular asC . more popular thanD . less popular than7. （2分）—Which would you prefer, orange juice or coffee?—Either _____ OK, but I prefer coffee ______ milk.A . are; withB . is; withC . is, to8. （2分）bad the weather is!A . It'sB . What'sC . WhatD . How9. （2分）Steven asked the taxi driver to driver a little ______ because he had to catch the last train.A . quicklyB . the most quicklyC . more quicklyD . less quickly10. （2分）—You mustn't swim here. Look at the sign. It "No Swimming".—Oh, I notice it. Thanks for telling me.A . says; don'tB . writes; don'tC . says; didn'tD . writes; didn't11. （2分）—What do you think of the music?—It was light and soft. It made me ____.A . relaxedB . sleepyC . to relaxD . asleep12. （2分）If a bear is ___________, it __________ people.A . in danger; attackB . dangerous; attacksC . in danger; will attackD . dangerous; will attack13. （2分）It is so dark _______ we have to turn on the light.A . asB . whenC . thatD . because14. （2分）—Will there be many robots in people's homes?— _______. Robots will help people a lot.A . Yes, they willB . Yes, there willC . No, they won'tD . No, there isn't15. （2分）–Is that your baseball? —___________.A . Yes, it isB . No, it isC . Yes, it isn'tD . Yes, it’s not16. （2分）There ________ a football match this afternoon.A . haveB . hasC . is going to haveD . is going to be17. （2分）—________ your father?—No, he is my uncle.A . Who'sB . Is heC . What'sD . Is she18. （2分）______ 15 years old, the boy left home for Beijing _______the first time.A . At, atB . On, atC . In, forD . At, for19. （2分）The glass is made _______ glass, please take care not to break it.A . fromB . ofC . byD . in20. （2分）My brother is going _________ to be a doctor.A . study medicineB . to study medicinesC . to study medicineD . studying medicine二、完型填空 (共1题；共10分)21. （10分）Dear Pet,Without knowing more about you, it's hard for me to give you some good advice.But first, I am sure that you are1 . You said that nobody would care if you left home. What about your2? And other family members? It seems that you are very3 . You'd better go to a doctor or talk 4 your parents. They will be able to help you.Second, I'm sure there’s someone else in your class who feels lonely, 5. You never know6other people feel. Try to make friends with your classmates. And you could7a club to meet new people and make friends, too.You8find happiness in yourself. So my9advice is to write a list of all the good things about yourself, learn to like yourself, and then10 will see your confidence (信心)and like you, too.Editor（1）A . rightB . wrongC . OKD . clever （2）A . teachersB . classmatesC . parentsD . friends （3）A . popularB . tiredC . sadD . happy （4）A . inB . aboutC . ofD . to（5）A . tooB . eitherC . alsoD . to（6）A . whyB . howC . whenD . where（7）A . take part inB . joinC . join inD . take part（8）A . mustn'tB . shouldn'tC . need toD . can't（9）A . finallyB . lastC . endD . first（10）A . otherB . the otherC . othersD . another三、阅读理解 (共3题；共26分)22. （10分）Mobile phones and the Internet have improved our life in many ways. However, along with improvements, they also brought a number of worrying problems.Many car accidents are caused by mobile phones. You can use many new mobile phones to get on the Internet .This can be very convenient, but some drivers get on the Internet while driving. Driving needs all our attention. By looking at their mobile phones and not at the road, these insensitive(不专注的) drivers are a danger to us all.Many of the dangers of the Internet are well known. Children who visit websites without their parents' permission sometimes talk to older people they don't know and put themselves in great danger.People with blogs(博客) sometimes post（张贴） embarrassing photographs of people they don't know on their websites without permission. There are also people who use the Internet to get personal information that we do not want them to have.Mobile Phones and Internet Safety Tipsl If you need to use a mobile phone when you drive, use a "hand –free" phone.l In difficult driving situation such as rain or snow, don't use your phone at all.l Do not make very important phone calls while driving. They take your attention off the road.l Tell your children not to talk with anyone they do not know on the Internet.l In an embarrassing situation, pay attention to people around you. People will be shy about taking your picture if they know you're paying attention.l Refuse to give out any personal information on the Internet.（1）Which of these dangers of mobile phones or the Internet is NOT mentioned in the passage?A . You can have a car accidentB . Someone can post your photograph on the InternetC . Someone you do not know can call you（2）Children should ______ on the Internet.A . give out their important personal informationB . talk to older people they don't knowC . ask for their parents' permission sometimes to visit some websites（3）A "hand-free" mobile phone is probably a mobile phone that _____.A . is free to useB . can be used without your handsC . can be used with only one hand（4）What advice is given in the passage to stop someone from taking an embarrassing picture of you?A . Pay attention to the people around youB . Don't give out your personal informationC . Use a "hands-free" mobile phone（5）Which is the best title of the passage?A . Internet ProblemsB . Mobile Phone and Internet DangerousC . The Development of Mobile Phone and Internet23. （8分）阅读理解Jim is from New York(纽约). His home is near the school. So he often goes to school by bike. Every day it takes him about fifteen minutes to get there. He always gets to school on time(准时).Mary is a student of a middle school in Tokyo（东京）. The school is far from her home. Every day she has to go to school by subway. It takes her about forty minutes, she often gets up very early because she doesn't want to be late for school. She is a good student.Jenny's home is in London. It is far from her school. She usually goes to school by bus. This kind of bus has two floors. It takes her an hour every day. She must get up very early every morning. She often gets there early.Tom is a student of a middle school in Iceland（冰岛）. There is snow all year around. So he usually goes to school by sledge（雪橇）. It takes about twenty minutes to get there. He is sometimes late for school.（1）How does Jenny go to school every day?A . By bike.B . By bus.C . By subway.D . By car.（2）Sometimes ______ is late for school?A . JohnB . MaryC . JennyD . Tom（3）Why does Tom usually go to school by sledge?A . Because his home is near the school.B . Because there is no bus in Iceland.C . Because there is snow all year round in Iceland.D . Because he can't ride a bike.（4）The text（文章）tells us ______A . how students can get to school on time.B . how students in other countries（其它国家）go to school.C . students should get up early.D . students should study hard.24. （8分） You might have noticed that the cost of food has gone up.In fact the price of wheat and rice has nearly doubled in the past few years.It's thought that right now，850 million people—that's more than 10 times the population of the UK—are short of food because it's too expensive or there's not enough of it.The price of basic food such as wheat and corn has stayed the same for quite a long time，about 30 years.But as the world's population is getting bigger，there's more pressure to feed more people，plus there's less land and water to go round.Another reason is climate（气候）change.Droughts and floods make it hard to grow crops like rice and grain.The price of oil has gone up and that makes it more expensive for farmers to run their tractors and to transport the food they make.And lots of fields are being used to grow crops to make other things that can't be eaten—which is bad news for hungry people.The main losers are poor people who live in cities in poor countries，who are facing higher prices for food.Some people are doing well out of the food crisis（危机） though.Farmers in rich countries like the US，Canada and Australia are getting record prices for their harvests.World leaders are meeting in the Italian capital Rome to talk about the problem of rising food prices.Some countries are helping out with the cost of foods and international aid agencies have called for more money for food production in poor countries.（1）The price of food goes up because all of the following EXCEPT _____.A . there are more and more people in the world.B . American farmers are getting richer and richer.C . many farm lands are used to make other things rather than food.D . climate change makes it harder to grow food.（2）Who lose the most because of the food crisis?A . Farmers in rich countriesB . Farmers in developed countries.C . Poor people in cities in poor countriesD . Poor people in cities in developed countries.（3）What does the food crisis mean to farmers in Canada?A . They can get a lot of money from the governmentB . They have to save a lot of moneyC . They can make more money from the high priceD . They are losing a lot of money.（4）What is the best title for this passage?A . Why is the Price of Food Going Up？B . How Many People are Short of Food?C . What Can We Learn from the Food Crisis?D . Who Can Benefit（受益） from the Food Crisis?四、句型转换 (共5题；共12分)25. （2分）Lucy does her homework every afternoon. (改一般疑问句)________ Lucy ________ her homework every afternoon?26. （2分）She thinks Allen is the best actor. (改为同义句)She thinks Allen is________ ________the other actors.27. （1分）There were ten different events.(改为一般疑问句)________ ten different events?28. （2分）Jane bought a nice scarf for her mother yesterday. (改为一般疑问句)________ Jane________ a nice scarf for her mother yesterday?29. （5分）are, two, here, family, nice, of, photos, my （连词成句）五、补全对话 (共1题；共5分)30. （5分）（2016·黑龙江）Complete the dialogue with proper words or sentences.A: Morning, Li Ming! Did you watch the news on CCTV yesterday evening?B: No, I didn't. ________?A: Yes, there was. Chairman Xi came to Heilongjiang.B: Really? When did he come to Heilongjiang?A: A few days ago.B: ________?A: He came here because our country wants to promote the economy of the Northeast Industry Base(振兴东北工业基地).B: I'm so excited to hear the news. Being a member of Heilongjiang, I think we should do what we can to make our hometown better and better.A: ________. I'm going to be an engineer when I grow up.B: ________?A: I'm going to study hard to get more knowledge.B: ________ after you graduate from the university?A: I'm going to work in our hometown.B: I hope your dream can come true.六、书面表达 (共1题；共5分)31. （5分）假定你是李华，你和几位好友要参观6月30日至7月5日举行的“深圳改革开放四十年”摄影展。
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第一学期期末模拟教学质量检测八年级英语试卷（总分：100分时间：100分钟）第І卷（共60分）Ⅰ.单项选择。
（每小题1分，共15分）1．It takes ________ hour to get there by bus．A．a B．an C．the D．/2．The story just describes ________ is happening all over the world．A．where B．when C．what D．why3．I was trying to pick it up ________ it bit me again．A．while B．as C．when D．if4．________ the building quickly，but ________ use the lift．A．Leave；don’t B．Leaving；don’t C．Leave；not D．Leaving；not 5．A white rabbit ________ pink eyes ran by．A．with B．by C．of D．for6．8,742 should be read as ________．A．eighty-seven forty-twoB．eighty-seven hundred forty-twoC．eight thousand and seven hundred，forty-twoD．eight thousand，seven hundred and forty-two7．——Does your brother __________ play soccer?——Yes．He plays it every day.A．often B．never C．hardly ever D．sometimes 8．Our son is going to study medicine when he __________ school.A．leave B．leaves C．is leaving D．left 9．——Will you go boating this Saturday?——___________．We will camp by lake.A．Yes, we will．B．No, we won’t．C．Yes, we do D．No, we don’t. 10．——Do you kno w Lin Shuhao?——Yes, he is one of ____________ basketball player in NBA.A．popular B．more popularC．the most popular D．the more popular11．——We’ll have a picnic _______ it doesn’t rain tomorrow.——Have a nice day.A．when B．because C．if D．since12．Susan, get some eggs and butter and _________.A．mix up them B．mix them up C．mix up it D．mix it up 13．——Can you go camping with me tomorrow?——_________.A．No, I don’t． B．Sure. C．No, I can’t．D．Let’s make it. 14．What ________ if I ________ to turn off water?A．will happen; forget B．Will happen; will forgetC．happen; forget D．happen; will forget15．——_________ are these oranges and pears?——About thirty yuan.A．How much B．How many C．How long D．How farⅡ．完形填空。
（每小题1分，共10分）Paul is from America ．He is a 13-year-old boy ．He likes 16 on weekends．There are many TV shows every day ．What 17 TV shows does Paul like and what does he think of them ?Well, Paul’s favorite TV shows are sports news and Animal World ．He often watches them 18 he goes to bed ．Paul’s favorite 19 is P.E．at school ．He likes playing basketball very much ．Paul loves sports news ．He thinks it is v ery 20 because he can see a lot of famous 21 ．Paul also likes Animal World ．He thinks the show is very interesting , and he can 22 alot about animals from it ．Pandas and koalas are Paula’s favorite animals ．Paul hopes to go to Australia to 23 koalas one day .As for Healthy Living , Paul 24 it ．He watches it when there aren’t sports news or Animal World ．But Paul can’t stand soap operas ．He thinks they’re 25 ．He never watches them . 16．A．going swimming B．going shoppingC．watching TV D．doing some reading17．A．size o f B．kind of C．bowl of D．group of 18．A．so B．before C．after D．if 19．A．teacher B．color C．language D．subject 20．A．dangerous B．quiet C．exciting D．difficult 21．A．players B．runners C．actors D．doctors 22．A．learn B．take C．give D．mind 23．A．read B．write C．see D．play 24．A．dislikes B．like C．can’t stand D．doesn’t mind 25．A．interesting B．boring C．fun D．coolⅢ．阅读理解，根据短文内容选择正确答案。
（每小题2分，共30分）AWe are talking about our dream jobs ．Jack and Hob are going to high school now ．Jackwants to be an engineer ．He is going to build roads , bridges and sand houses ．Hob is interested in math and science , but he is going to study medicine．He wants to be a doctor.Kate is good at music ．She wants to be an artist ．She is going to sing and dance for people ．Joan wants to be a woman pilot ．She says , “I am going to fly into space．”“What do you want to be , Alice ?” Joan asks me ．“Oh , I want to be a teacher ．When I grow up , I am going to teach in the poor country side .”Each of them is doing his or her best at school ．I am sure they will do something good for our country.26．students are mentioned（提及）in the passage .A．Two B．Three C．Four D．Five27．Who wants to be an artist?A．Joan B．Jack C．Kate．D．Alice．28．Hob is interested in ．A．medicine B．music C．space D．science 29．What does Joan want to be?A．An astronaut．B．A teacher． C．A doctor．D．An engineer ．30．Where does Alice want to teach?A．On a farm．B．In the poor countryside．C．At home．D．AbroadBMr. Brown got up late this morning．He was going to be late for work．It was raining hard and the streets were wet．He drove so fast that he didn't see the red lights．He couldn't stop his car and hit a car．An old man got out of the car and called out angrily, "What are you doing? How can you drive so fast?""I'm sorry, sir," said Mr. brown, "l didn't see the lights turn red." Then he brought out a bottle of wine and gave it to the old man."It's cold today, sir," said Mr. Brown．"Please drink a little, and then you'll get warm."The old man drank some wine and became happy．He asked, "I'm feeling much better now．Why don't you drink any?""l can't drink anything now, sir, "answered Mr. Brown "I'm waiting for the policeman．Only drunkards（酒鬼）cause accidents, you know!"31．When did the story happen?A．In the morning B．In the afternoon C．In the evening D．At night 32．Why did Mr. Brown drive so fast?A．He was happy that day B．He was good at drivingC．There were few cars in the street D．He was afraid to be late33．Mr. Brown hit the car because of the following EXCEPT that .A．he didn't see the red lights B．he drove fastC．he couldn't drive at all D．it was raining hard34．Why did Mr. Brown give a bottle of wine to the old man?A．To make him happy B．To make him drunkC．To make him warm D．To make friends with him35．We can know that at last.A．Mr. Brown was not late for workB．the old man and Mr. Brown became good friendsC．Mr. Brown drank some wineD．Mr. Brown fooled the old manCMany people like to travel by plane because it is fast．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 for the plane to take off and it is often late．You can’t open the windows．You can’t choose the food．Although planes are fast, they still take hours to go 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 thewindows．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 carry many things with you in a car．But sometimes there are too many cars on the road.36．Why do many people like to travel by plane?A．Because it is safe B．Because it is fast.C．Because you can walk around in the plane．D．Because it is cheap.37．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 in the train. 38．If you want to take a lot of things with you , what do you take to go out?A．A bus．B．A car．C．A train．D．A bike. 39．What is the bad thing about the car?A．You needn’t go to a station．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 a bus stop.40．What does the writer think of the plane，train and car?A．He thinks it takes a lot of time to go to and get out of the airport.B．He likes to take a train because it takes a little more timeC．He likes to take a car because he has a car.D．He likes to take a plane because it’s fast.Ⅶ.补全对话。