七年级培优测试卷
培优试卷七年级上册数学
一、选择题（每题3分，共30分）1. 下列各数中，绝对值最小的是（）A. -3B. -2C. 0D. 12. 下列各式中，正确的有（）A. $a^2 = b^2$ 推出 $a = b$B. $a^2 = b^2$ 推出 $a = \pm b$C. $a^2 = b^2$ 推出 $|a| = |b|$D. $a^2 = b^2$ 推出 $a^2 - b^2 = 0$3. 在直角坐标系中，点P的坐标是（-2，3），则点P关于x轴的对称点的坐标是（）A.（-2，-3）B.（2，-3）C.（-2，3）D.（2，3）4. 下列各数中，是正数的是（）A. $\sqrt{9}$B. $\sqrt{4}$C. $\sqrt{16}$D. $\sqrt{25}$5. 如果一个等腰三角形的底边长为6，腰长为8，那么这个三角形的周长是（）A. 22B. 24C. 26D. 286. 在一次函数y=kx+b（k≠0）中，当x=1时，y=2；当x=2时，y=4，那么这个函数的解析式是（）A. y=2xB. y=4xC. y=2x+2D. y=4x+27. 如果一个数的平方根是±3，那么这个数是（）A. 9B. 12C. 18D. 368. 在下列各组数中，成等差数列的是（）A. 1，4，7，10B. 2，5，8，11C. 3，6，9，12D. 4，7，10，139. 一个正方形的对角线长为10cm，那么这个正方形的边长是（）A. 5cmB. 10cmC. 15cmD. 20cm10. 下列各数中，是整数的有（）A. $\sqrt{49}$B. $\sqrt{64}$C. $\sqrt{81}$D. $\sqrt{100}$二、填空题（每题3分，共30分）1. $\sqrt{36}$ 的平方根是__________。
2. 若 $a^2 + b^2 = 25$，则 $a^2 - b^2$ 的最大值是__________。
人教版七年级英语上册UNIT 3 培优测试卷含答案
人教版七年级英语上册UNIT 3 培优测试卷一、单项选择(每小题1分，共10分)1. This is ____ office and ____ office is not big.A. a; theB. an; theC. the; aD. the; an2. —I'm so sorry to break(打碎) your glass.—It is OK! I just want to ____ it for a new one.A. spendB. meanC. startD. change3. The teacher's desk is ____ the front of the classroom.A. inB. onC. toD. with4. —What a ____ schoolbag!—Yes. It is very different from the others in the shop.A. smartB. specialC. similarD. short5. There ____ many modern high-speed railways in Jiangsu and they help peopletravel easily.A. isB. areC. wasD. were6. They often play basketball in the ____ after school.A. hotelB. labC. libraryD. playground7. —Who ____ the ads(广告) on the white wall？It is so bad!—I don't know.A. puts upB. puts onC. puts inD. puts down8. —____ is your sister, Lily?—She is next to my grandfather.A. WhereB. WhoC. HowD. What9. —Let's help the old man walk ____ the road.—OK, let's go.A. atB. acrossC. beforeD. above10. —What's your school like?—________.A. It's coldB. We like itC. It's really bigD. Near a farm二、完形填空(每小题1分，共10分)Tom and Fred are classmates. They __11__ both twelve years old. They are in the same class in their school, but they don't like each other. This Friday afternoon they have a fight(打架)in class, and __12__ teacher is very angry(生气的). She says to them, “Stay here after the lessons this __13__，and write your __14__ 100 times(次). ”After the __15__ lesson, all the other students go home, __16__ Tom and Fred stay in the classroom with their teacher. They begin to write __17__ names. Then Fred begins to cry. The teacher looks __18__ him and says, “__19__ are you crying, Fred？” “Because his name is Tom May,and my name is Frederick Hollingsworth. My name is very, very __20__，” Fred says.11. A. are B. isC. beD. am12. A. my B. yourC. ourD. their13. A. morning B. noonC. afternoonD. evening14. A. names B. homeworkC. friendsD. letters15. A. first B. secondC. nextD. last16. A. and B. butC. soD. or17. A. they B. themC. theirD. theirs18. A. after B. inC. forD. at19. A. Why B. HowC. WhatD. When20. A. good B. cleanC. longD. short三、阅读理解(每小题2分，共30分)AAre you fond of the game “Finding Differences”？Here is one about a room. Look at the two pictures. Can the girls find the differences? Let's have a look!Who DifferencesAlice Picture 1: There is no clock on the wall. Picture 2: There is one clock on the wall.Linda Picture 1: There is a box on the desk. Picture 2: There is a computer on the desk.Cindy Picture 1: There is a baseball on the sofa. / There is a telephone on the desk.21. What is the game about?A. A computer.B. A room.C. A book.D. A sofa.22. What does the underlined word “Differences” in the text mean in Chinese?A. 作用B. 特征C. 区别D. 价格23. Alice finds that there is no ____ in Picture 1.A. telephoneB. pencil boxC. computerD. clock24. Who finds that there is a computer in Picture 2?A. Linda.B. Alice.C. Cindy.D. Jenny.25. What does Cindy find?A. There is one clock in Picture 2.B. There is a telephone in Picture 2.C. There is a baseball in Picture 1.D. There is a pencil box in Picture 1.B①I am Alice and I'm a student in Saville Middle School. It's a big and nice school in London. There are 500 boys and 689 girls in my school. They are between 13 and19 years old. The buildings in my school are new.②All the classrooms have two big blackboards, a television and five computers. They help us a lot. So I like to have classes in the classroom.③I like the school library very much. A lot of books are in it. I always read books with my friends there. If (如果) you can't find the book you want, please ask the teachers there for help. They're all nice.④I also like the dining hall. There are a lot of tables and chairs, big televisionsand ping-pong tables. We can watch TV and play ping-pong there.⑤There is a lost and found case(失物招领箱) near the dining hall. If you lose your things, you can put a lost notice with your name and phone number on the bulletin board (布告栏). It can help you to find your lost things.⑥All in all, I love my school.26. How many students are there in Alice's school?A. 500.B. 689.C. 1189.D. 1000.27. Which of the following is NOT mentioned (提及) according to the passage?A. The school library.B. The dining hall.C. The lost and found case.D. The sports hall.28. Who can help you if you can't find the book you want in the school library?A. Your friends.B. The teachers there.C. Your classmates.D. Your parents.29. What is the structure (结构) of the passage?A. ①②/③④⑤/⑥B. ①/②③④⑤/⑥C. ①/②③④/⑤⑥D. ①②③/④⑤/⑥30. What is the best title (标题) for the passage?A. My Favourite BuildingB. My ClassmatesC. My New TeachersD. My SchoolCEric's schoolI study in No. 1 Middle School. The school is big and beautiful. There are many tall trees and colorful flowers. I like the big playground and the library. I like playing with friends in the playground and reading books in the library.The classroom building has 6 floors. My classroom is on the 5th floor. The gymis in front of the classroom building. When it's rainy, we have our PE lessons in the gym.I have lunch at school. The dining hall is next to the gym. I like to have lunch with Ivan. After lunch, we go to the library behind the dining hall. We stay there for half an hour.My father studied in this school 25 years ago. At that time, there was no gym, dining hall or library. When it was rainy, my father couldn't have PE class. Now the school is more and more beautiful. Next year, there will be a swimming pool in the school. Students can have swimming class.31. How is the school?A. It's beautiful.B. It's tidy.C. It's beautiful and tidy.D. It's big and beautiful.32. Where is the classroom building?A. It's in front of the gym.B. It's in the front of the gym.C. It's behind the gym.D. It's next to the gym.33. What does the underlined word “stay” mean in Chinese?A. 待；停留B. 离开C. 参加D. 整理34. Where does Eric go after lunch?A. He goes to the gym.B. He goes to the playground.C. He goes to the library.D. He goes to the classroom.35. Which of the following is NOT TRUE?A. Eric's father was a student here 25 years ago.B. When it rained, Eric's father would get wet(淋湿)in PE class.C. The school will build (建造)a swimming pool next year.D. It is a beautiful school with many tall trees and colorful flowers.四、任务型阅读(每小题2分，共10分)A. GymB. LibraryC. Dining HallD. Teaching BuildingE. Sports FieldWelcome to my new school. The school gate faces south(朝南). The teachers' building is next to the library. Behind the library and the teachers' building，there is a teaching building. My classroom is on the fourth floor of the building. We change seats every week. The science labs are behind the teaching building. We often do experiments there. On the right of the science labs，you can see the dining hall. In front of the dining hall，there is a nice garden with lots of beautiful flowers. The gym is in front of the garden. On rainy days，we do sports in it. The sports field is near the gym, and it's very big. I often spend most of my free time playing basketball with my classmates there. Every Monday we raise the flag there. It's a special way to start the week. I think my school is very nice. I like it very much.阅读短文，完成学校俯瞰图。
数学培优测试卷七年级上
一、选择题（每题5分，共50分）1. 下列各数中，有理数是（）A. √2B. πC. 0.1010010001……D. -1/32. 若a、b、c是三角形的三边，且a+b>c，b+c>a，a+c>b，则下列不等式中一定成立的是（）A. a+b+c>0B. a-b+c>0C. a+b-c>0D. a-b-c>03. 下列各数中，绝对值最小的是（）A. -1B. 0C. 1D. -24. 若x²=9，则x的值为（）A. ±3B. ±2C. ±1D. ±55. 下列函数中，y是x的二次函数的是（）A. y=2x+1B. y=x²+2C. y=x³+1D. y=3x²-2x+16. 若等差数列{an}的前n项和为Sn，公差为d，首项为a1，则S10=（）A. 10a1+45dB. 10a1+90dC. 10a1+55dD. 10a1+50d7. 在平面直角坐标系中，点A（-2，3）关于y轴的对称点是（）A.（2，3）B.（-2，-3）C.（2，-3）D.（-2，-3）8. 若a、b是方程x²-2ax+a²=0的两个实数根，则a+b=（）A. 2B. 0C. -2D. -49. 下列命题中，正确的是（）A. 平行四边形的对角线互相平分B. 等腰三角形的底角相等C. 直角三角形的两个锐角互余D. 正方形的对边平行10. 若x、y是方程2x²-3xy+2y²=0的两个实数根，则x²+y²=（）A. 2B. 3C. 4D. 5二、填空题（每题5分，共50分）11. 已知一元二次方程x²-5x+6=0，求其两个根之和和两个根之积。
12. 若等差数列{an}的前n项和为Sn，公差为d，首项为a1，则S20=______。
13. 在平面直角坐标系中，点P（3，-2）到原点O的距离是______。
人教版七年级英语上册UNIT 2 培优测试卷含答案
人教版七年级英语上册UNIT 2 培优测试卷一、单项选择(每小题1分，共10分)1. —What can you do, Sarah?—I can play ____ violin, but I can't play ____ chess.A. 不填；不填B. the; theC. the; 不填D. 不填；the2. —Is Jim your cousin?—Yes, he is. He is my aunt's ____.A. brotherB. sisterC. daughterD. son3. —Ella always ____ too much time playing computer games.—That's too bad.A. spendsB. greetsC. countsD. writes4. The TV show is really ____. All of us like to watch it.A. differentB. smartC. funnyD. young5. —Sally ____ likes pink.—Yeah! Her schoolbag and her clothes are all pink.A. usuallyB. reallyC. safelyD. early6. —What does the sign(标志) ____？—Sorry, I don't know.A. loveB. needC. haveD. mean7. This is ____ room. It's very tidy.A. Lily and Lucy'sB. Lily and LucyC. Lily's and Lucy'sD. Lily's and Lucy8. My school life is colorful. There are different kinds of ____ for us to choose(选择)from.A. astronautsB. hobbiesC. activitiesD. mistakes9. —Does Jane like tigers?—____. She likes pandas.A. Yes, she doesB. No, she doesn'tC. Yes, she doesn'tD. No, she does10. —I will go to the beach with my family tomorrow.—____.A. Have funB. I'm sorryC. Thank youD. See you二、完形填空(每小题1分，共10分)This is Han Mei. She is a Chinese girl. She is from Shanghai, China. Her English __11__ is Amy.This girl has a __12__ family. There are __13__ people in her family. They are her father, her mother, her sister and Amy. Her parents like __14__ very much. They __15__ ping-pong every day. Her father is __16__，and her mother is beautiful. Amy's sister is a middle school student. She studies very hard. Her English is very good. Her English teacher Mrs King likes __17__ very much. Amy likes collecting (收集) pens. In her room you can see a lot of new and old pens. Amy also likes animals very much. She has a __18__ at home. Its name is Qiuqiu. She often takes it to the park. Oh, her dog's __19__ is black and white. Look! It is wearing a pink __20__ on its head. How cute!11. A. unit B. nameC. bandD. game12. A. wrong B. funnyC. terribleD. small13. A. two B. threeC. fourD. five14. A. sports B. clothesC. flowersD. photos15. A. have B. callC. keepD. play16. A. long B. handsomeC. tidyD. slow17. A. me B. youC. himD. her18. A. door B. keyC. dogD. kid19. A. color B. floorC. gradeD. hobby20. A. sock B. hatC. skirtD. shirt三、阅读理解(每小题2分，共30分)AI am Grace. Here is my family.21. Where does Grace's mother work?A. In a hospital.B. In a school.C. In a supermarket.D. At home.22. What does Scott Black like?A. Going hiking.B. Playing basketball.C. Reading.D. Animals.23. Who is Tony Black?A. Grace's friend.B. Grace's father.C. Grace's cousin.D. Grace's brother.24. From the passage we know ____.A. Jessica is Tony's teacherB. Tony is 40 years oldC. Jessica is Grace's motherD. Scott is Tony's uncle25. The main idea (主旨大意) of this passage is about ____.A. Grace's parentsB. Grace's schoolC. Grace's familyD. Grace's dayBMr. Black and Mrs. Black have a happy family. Here's a photo oftheir family. The man on the left is Mr. Black. He's a doctor. Thewoman on the right is Mrs. Black. She's a teacher. An old woman inthe middle is Grandma. Mr. Black and Mrs. Black have two kids. Theboy in front of Mr. Black is his son. His name is Jack. He's twelve years old. He likes going hiking. Next to him is his sister, Kate. She's ten years old. She has big eyes and loves animals.Jack and Kate are in the same school, but they're in different grades. Jack is in Grade Seven and Kate is in Grade Five. They're good students at school. They study hard and they like to help their classmates. At home they like to help their dad andmom do housework (家务). Their dad and mom love them very much. They love their dad and mom, too.26. What does Mrs. Black do?27. Where is Kate in the photo?A. Next to her dad.B. Next to her grandma.C. Next to her mom.D. Next to her brother.28. How many people are there in the photo?A. Six.B. Five.C. Four.D. Three.29. What is Paragraph 2 about?A. The family photo.B. Jack's clothes.C. Kate's school.D. Jack and Kate.30. What can we learn from the text?A. Kate and her mom are in the same school.B. Jack is in a green shirt in the photo.C. They have a happy family.D. Kate and Jack are classmates.CI'm Dick. I have a big family. My family take photos every year. In my eyes, these photos are great. They can help us record our happy times. We often have a look at them when we are free. Now I want you to see a photo.When do we take the photo? During the Spring Festival (春节期间) this year. All my family come back home to celebrate (庆祝) the new year. So we take the phototogether.My two grandfathers, two grandmothers, my parents, my sister and I are in this photo. We all have big smiles (微笑) on our faces. My grandparents sit in the chairs, and I am in front of them. The two people next to my grandparents are my father and mother. My sister is in their arms. Everyone looks very happy in the photo. I like the photo very much.Next year, I want to take photos with my family in my school. That is very nice.31. What does the underlined word “record” mean in Chinese?A. 依靠B. 记录C. 遗忘D. 吸引32. How does the writer begin Paragraph (段落) 2?A. By (通过) asking a question.B. By showing an example (举例).C. By giving numbers.D. By telling a story.33. ____ people are in the photo.A. FiveB. SixC. SevenD. Eight34. Where is Dick's sister?A. In the chair.B. Next to her parents.C. In her parents' arms.D. In front of her grandparents.35. What's the best title (最佳标题) for the text?A. My family storyB. My family photoC. The Spring FestivalD. A photo of my school四、任务型阅读(每小题2分，共10分)Ben is from the US. He is my neighbor(邻居), and this is a photo of his family.Ben has a big family. Look! His grandfather and grandmother are on the sofa. Ben's father is a doctor. He works in a hospital. He__drives__his__car__to__work. Ben's mother is a teacher. She teaches English in our school. The man in white is Ben's uncle. The young woman in red is Ben's aunt. They are office workers. Ben's family live in Beijing now.Ben and I are classmates. We are good friends.36题完成句子；37、38 题简略回答问题；39 题找出并写下第二段的主题句；40 题将文中画线句子译成汉语。
七年级培优试卷【含答案】
七年级培优试卷【含答案】专业课原理概述部分一、选择题（每题1分，共5分）1. 下列哪种现象属于光的折射？A. 镜子中的倒影B. 针孔成像C. 水中的鱼看起来更浅D. 彩虹2. 下列哪个单位是力的国际单位？A. 焦耳B. 牛顿C. 瓦特D. 安培3. 在下列反应中，哪个是放热反应？A. 灯泡发光B. 燃烧木材C. 溶解氨气在水中D. 植物光合作用4. 下列哪个是单质？A. 水B. 二氧化碳C. 氧气D. 盐酸5. 下列哪个行星离太阳最近？A. 地球B. 金星C. 水星D. 火星二、判断题（每题1分，共5分）1. 地球是太阳系中最大的行星。
（）2. 动能和势能统称为机械能。
（）3. 酸性溶液的pH值大于7。
（）4. 光速在真空中是最快的。
（）5. 金属通常都是良导体。
（）三、填空题（每题1分，共5分）1. 地球自转的方向是______。
2. 物质由液态变为固态的过程叫做______。
3. 声音的传播需要______。
4. 植物进行光合作用时，会释放出______。
5. 在电路中，电阻的单位是______。
四、简答题（每题2分，共10分）1. 简述光的反射定律。
2. 解释什么是机械能。
3. 描述水的沸腾过程。
4. 简述植物的呼吸作用。
5. 解释地球公转的意义。
五、应用题（每题2分，共10分）1. 一个物体从高处落下，不考虑空气阻力，其速度会如何变化？2. 如果将两个不同材质的物体放在太阳光下，哪个会更快变热？3. 在一个密闭容器中，如果温度和压力保持不变，溶解更多的气体是否可能？4. 如果要增大电路中的电流，应该增加还是减少电阻？5. 为什么在冬天，我们呼出的气体会形成白雾？六、分析题（每题5分，共10分）1. 分析水的三态变化过程中，分子间距离和分子运动速度的变化。
2. 分析地球自转和公转对地球上生物的影响。
七、实践操作题（每题5分，共10分）1. 设计一个实验来验证光的直线传播。
2. 描述如何通过实验来确定物质的密度。
人教版七年级英语上册期中培优测试卷含答案
人教版七年级英语上册期中培优测试卷一、单项选择(每小题1分，共10分)1. —Is ____ Jane?—No. ____ name is Cindy.A. she; SheB. she; HerC. her; HerD. her; She2. The two pens are ____. One has a letter “M” on it.A. differentB. sameC. rightD. strong3. —Do you play ____ ping-pong after school?—Yes. We always play it for ____ hour.A. the; aB. the; anC. /; anD. /; a4. —Hi, Bob! Are your ____ here?—Yes. This is my grandma and that is my grandpa.A. parentsB. grandparentsC. cousinsD. brothers5. —____ do you like this game?—Because it's very relaxing.A. HowB. WhereC. WhyD. When6. —Excuse me, could you ____ the map for the kids?—Sure. Next to the door, OK?A. look upB. get upC. put upD. put on7. Li Lei and Dick are my good friends. We are ____ in Class 1, Grade 7.A. otherB. everyC. bothD. all8. —Can you ____ it in English?—Yes. It's a cup.A. sayB. seeC. spellD. thank9. There is a teacher's desk ____ the classroom. Mr Liu is standing ____ it.A. in front of; in front ofB. in the front of; in the front ofC. in the front of; in front ofD. in front of; in the front of10. —____？—It's big and beautiful.A. Is that your schoolB. What's in your schoolC. Where is your schoolD. What's your school like二、完形填空(每小题1分，共10分)Dear Kitty，Thank you for your email. In your __11__，you tell me something about your school in America. And I __12__ a lot about you and your school. Now let me tell you something about my family and school.I am a(n) __13__ boy. I was born in Wuhu, Anhui. I am twelve. I am __14__ Grade Seven at No. 2 Secondary School. It takes me about fifteen minutes to get to the school. I often go to school __15__. But I don't walk to school if it rains. I take a bus. My school is big and beautiful. My class __16__ twenty boys and fifteen girls. My teachers say all the __17__ students are good. They like us very much.As for my family, my mother is a __18__. She works in Wuhu No. 1 People's Hospital. I have a sister. She is very __19__，but I am tall. We are in the same school. My father is a teacher. He __20__ English. All the students like his class and are good at English.I am happy at home and I am happy at school, too.Yours，Wang Fan11. A. book B. letterC. emailD. picture12. A. know B. watchC. hopeD. play13. A. American B. EnglishC. ChineseD. Japanese14. A. on B. inC. atD. for15. A. by bus B. by bikeC. by trainD. on foot16. A. is B. areC. hasD. have17. A. fifteen B. twentyC. thirtyD. thirty-five18. A. teacher B. doctorC. driverD. farmer19. A. short B. strongC. cuteD. thin20. A. studies B. speaksC. worksD. teaches三、阅读理解(每小题2分，共30分)AHi, my name is Tommy Miller. I'm a boy. I'm two. I have two big ears. Here's my family tree. My father, Paul Miller, is strong(强壮的)and his ears are big, too. My mother is Alice. She is nice and I like her. These are my brothers and sisters. We're a big family. Please come and play with us. Our telephone number is 687-9352.21. Tommy's family's telephone number is ____.A. 687-9352B. 687-9532C. 697-9523D. 697-935222. Paul and Alice have ____.A. one son and four daughtersB. two sons and three daughtersC. three sons and one daughterD. three sons and two daughters23. ____ favorite color is blue.A. Paul'sB. Alan'sC. Jackie'sD. Lisa's24. From the family tree we know Jackie and Sally are ____.A. cousinsB. mother and sonC. brother and sisterD. brothers25. Which is RIGHT(正确的) from the passage?A. Lisa is a nice mother.B. Sally has two small ears.C. Tommy, Jackie and Alan are the same age.D. Alice is very strong.BDear Lingling，I am writing this letter to you in my classroom. It's really a big room. There are fifty students in my class, twenty-eight girls and twenty-two boys. In the front of the classroom, there is a blackboard, a map of the world and a desk for our teachers. On the teacher's desk, there is a computer. There are four windows in the wall. We all like our classroom. What's your classroom like? Please write to me.Yours，Betty26. How many boys are there in Betty's class?A. Fifty.B. Twenty.C. Twenty-eight.D. Twenty-two.27. What are in the front of the classroom?A. A blackboard, a map and a teacher's desk.B. A television, a map and a teacher's desk.C. A blackboard, a map and a picture.D. A television, a map and a picture.28. What's on the teacher's desk?29. Which of the following is NOT true?A. There are fifty students in the class.B. The classroom is small.C. The letter is for Lingling.D. There are four windows in the wall.30. What's the passage about?A. Betty's teacher.B. Betty's classroom.C. Betty's school.D. Betty's classmates.CPeppa is a little pig. Many people know her name because they can see her on TV. Peppa has a big family. Here are her three family photos. Let's have a look.In the first photo, you can see Peppa's father, mother and little brother George. What about the next photo? Peppa's grandparents are on the left of the photo and her parents are on the right. You can also see Peppa and her friends. Who are in the last photo? Peppa's family and her uncle's family.Now, let me tell you more about Peppa's family. Peppa is in red. She has many friends. She likes playing in muddy puddles(泥坑). George is in a blue T-shirt. He likes playing with his sister. Daddy Pig is in a green T-shirt. He loves watching TV. He doesn't like doing sports. Mummy Pig works at home on her computer. She is in orange. She's very nice. Grandpa Pig is in purple and Granny Pig is in pink. Peppa loves going to her grandparents' home. Granny Pig always makes her favourite cake!Peppa has a happy family.31. Who is on the left of Photo ②？A. Peppa's mother.B. Peppa's uncle.C. Peppa's grandpa.D. Peppa's brother.32. What colour is George's T-shirt?A. Red.B. Blue.C. Green.D. Orange.33. What does Daddy Pig love?A. Playing with his daughter.B. Watching TV.C. Doing sports.D. Working on the computer.34. Why does Peppa love going to her grandparents' home?A. Because she has many friends there.B. Because she can see her uncle's family.C. Because she likes playing in muddy puddles.D. Because her grandma always makes cakes for her.35. Which is the best title(标题)for the passage(文章)?A. Peppa's big familyB. Peppa's family photosC. Peppa's favourite colourD. Peppa's grandparents四、任务型阅读(每小题2分，共10分)I'm Sarah. I'm a middle school student. I'm in Sunshine Secondary School. 36. ________ This is our school. 37. ________ There are thirty-two classrooms in the classroom building. Our sports field is behind the classroom building. The teachers' offices are in the teachers' building. 38. ________ There are many books and magazines(杂志)in the library. 39. ________ No, it's in front of it. There are seven science rooms in the science building. Behind the science building is the dining hall. In the dining hall there are many tables and chairs. 40. ________ The food there is delicious. This is our school. I like it very much.五、根据汉语意思完成句子(每小题2分，共10分)41. 请不要把小汽车停在商店前面！Don't park the cars ________ ________ ________ the shop, please!42. 放学后我们一起打扫教室吧。
七年级上册期末试卷培优测试卷
七年级上册期末试卷培优测试卷一、选择题1．如图所示，沿图中虚线旋转一周，能围成的几何体是下面几何体中的 （ ）A ．B ．C ．D ．2．若x 3=是方程3x a 0-=的解，则a 的值是( )A ．9B ．6C ．9-D ．6- 3．己知x=2是关于x 的一元一次方程ax-6+a=0 的解，则a 的值为( )A ．2B ．2-C ．1D ．0 4．如图，OA 方向是北偏西40°方向，OB 平分∠AOC ，则∠BOC 的度数为（ ）A ．50°B ．55°C ．60°D ．65°5．下列各组中的两个单项式，属于同类项的一组是（ ）A ．23x y 与23xyB ．3x 与3xC ．22与2aD ．5与－36．2019年是中华人民共和国成立70周年，10月1日上午在天安门举行了盛大的阅兵式和群众游行，约有115000名官兵和群众参与，是我们每个中国人的骄傲.将115000用科学计数法表示为（ ）A ．115×103B ．11.5×104C ．1.15×105D ．0.115×106 7．化简：35xy xy -的结果是（ ） A ．2 B ．2- C ．2xyD ．2xy - 8．下列关于0的说法正确的是（ ）A ．0是正数B ．0是负数C ．0是有理数D ．0是无理数 9．若x ＞y ，则下列式子错误的是（ ）A ．x ﹣3＞y ﹣3B ．﹣3x ＞﹣3yC ．x+3＞y+3D ．x y >3310．已知一个圆柱的侧面展开图为如图所示的矩形，则其底面圆的面积为( )A ．B ．4C ．或4D ．2或411．下列计算结果正确的是（ ）A ．22321x x -=B ．224325x x x +=C ．22330x y yx -=D ．44x y xy +=12．下列图形，不是柱体的是（ ）A ．B ．C ．D ．13．如图，学校（记作A ）在蕾蕾家（记作B ）南偏西20︒的方向上.若90ABC ∠=︒，则超市（记作C ）在蕾蕾家的（ ）A ．北偏东20︒的方向上B ．北偏东70︒的方向上C ．南偏东20︒的方向上D ．南偏东70︒的方向上 14．若2(1)210x y -++=，则x +y 的值为（ ）．A ．12B ．12-C ．32D ．32- 15．如图，用一副特制的三角板可以画出一些特殊角.在下列选项中，不能画出的角度是（ ）A ．81B ．63C ．54D ．55二、填空题16．动点,A B 分别从数轴上表示10和2-的两点同时出发，以7个单位长度/秒和4个单位长度/秒的速度沿数轴向负方向匀速运动，__________秒后，点,A B 间的距离为3个单位长度.17．某商品的进价为每件100元，按标价打八折售出后每件可获利20元，则该商品的标价为每件____元.18．点A 在数轴上距离原点2个单位长度，将点沿着数轴向右移动3个单位长度得到点B ，则点B 表示的数是_____．19．如图是一个数值转换机.若输出的结果为10，则输入a 的值为______.20．如图，135AOD ∠=︒，75COD ∠=︒，OB 平分AOC ∠，则BOC ∠=________度.21．若代数式M ＝5x 2﹣2x ﹣1，N ＝4x 2﹣2x ﹣3，则M ，N 的大小关系是M ___N （填“＞”“＜”或“＝”）22．请写出一个系数是－2，次数是3的单项式：________________．23．单项式－4x 2y 的次数是__．24．若王老师在一次数学过关测试中，以80分为过关线，记下了4名同学的成绩：+8,0，-8，+13，则这4名同学实际成绩最高的是__________分.25．如图，一副三角板（直角顶点重合）摆放在桌面上，若∠AOD=150°，则∠BOC 的度数是________．三、解答题26．由几个相同的棱长为1的小立方块搭成的几何体的俯视图如图所示，方格中的数字表示该位置的小立方块的个数．（1）在下面方格纸中画出这个几何体的1主视图与左视图；（2）求该几何体的表面积27．如图，OC 是一条射线，OD 、OE 分别是AOC ∠和BOC ∠的平分线.（1）如图①，当80AOB ∠=︒时，则DOE ∠的度数为________________；（2）如图②，当射线OC 在AOB ∠内绕O 点旋转时，∠BOE 、EOD ∠、DOA ∠三角之间有怎样的数量关系？并说明理由;（3）当射线OC 在AOB ∠外如图③所示位置时，（2）中三个角：∠BOE 、EOD ∠、DOA ∠之间数量关系的结论是否还成立？给出结论并说明理由；（4）当射线OC 在AOB ∠外如图④所示位置时，∠BOE 、EOD ∠、DOA ∠之间数量关系是____________.28．如图，直线,,AB CD EF 相交于点O ，OG CD ⊥.(1)已知3812'AOC ∠=︒，求BOG ∠的度数;(2)如果OC 是AOE ∠的平分线，那么OG 是EOB ∠的平分线吗?说明理由.29．设a ，b ，c ，d 为有理数，现规定一种新的运算：a b c d =ad-bc ，当2x 43x 23-=10时，求代数式2（x-2）-3（x+1）的值． 30．学校艺术节要印制节目单，有两个印刷厂前来联系业务，他们的报价相同，甲厂的优惠条件是：按每份定价1.5元的八折收费，另收900元制版费；乙厂的优惠条件是：每份定价1.5元的价格不变，而900元的制版费则六折优惠．问：（1）学校印制多少份节目单时两个印刷厂费用是相同的？（2）学校要印制1500份节目单，选哪个印刷厂所付费用少？31．已知方程532x x -=与方程2463k x x +-=的解互为相反数，求5417k ⎛⎫- ⎪⎝⎭的值. 32．如果两个角之差的绝对值等于45°，则称这两个角互为“半余角”，即若|∠α－∠β |＝45°，则称∠α、∠β互为半余角．（注：本题中的角是指大于0°且小于180°的角）（1）若∠A ＝80°，则∠A 的半余角的度数为 ；（2）如图1，将一长方形纸片ABCD 沿着MN 折叠（点M 在线段AD 上，点N 在线段CD 上）使点D 落在点D ′处，若∠AMD ′与∠DMN 互为“半余角”，求∠DMN 的度数；（3）在（2）的条件下，再将纸片沿着PM 折叠（点P 在线段BC 上），点A 、B 分别落在点A ′、B ′处，如图2．若∠AMP 比∠DMN 大5°，求∠A ′MD ′的度数．33．我们知道，任意一个正整数n 都可以进行这样的分解：n p q =⨯（p ，q 是正整数，且p q ≤），在n 的所有这种分解中，如果p ，q 两因数之差的绝对值最小，我们就称p ×q 是n 的完美分解．并规定：()p F n q=． 例如18可以分解成1×18，2×9或3×6，因为18－1＞9－2＞6－3，所以3×6是18的完美分解，所以F （18）＝3162=． （1）F （13）＝ ，F （24）＝ ；（2）如果一个两位正整数t ，其个位数字是a ，十位数字为1b -，交换其个位上的数与十位上的数得到的新数减去原来的两位正整数所得的差为36，那么我们称这个数为“和谐数”，求所有“和谐数”；（3）在（2）所得“和谐数”中，求F （t ）的最大值．四、压轴题34．（阅读理解）如果点M ，N 在数轴上分别表示实数m ，n ，在数轴上M ，N 两点之间的距离表示为MN m n(m n)=->或MN n m(n m)=->或m n -．利用数形结合思想解决下列问题：已知数轴上点A 与点B 的距离为12个单位长度，点A 在原点的左侧，到原点的距离为24个单位长度，点B 在点A 的右侧，点C 表示的数与点B 表示的数互为相反数，动点P 从A 出发，以每秒2个单位的速度向终点C 移动，设移动时间为t 秒．()1点A 表示的数为______，点B 表示的数为______．()2用含t 的代数式表示P 到点A 和点C 的距离：PA =______，PC =______． ()3当点P 运动到B 点时，点Q 从A 点出发，以每秒4个单位的速度向C 点运动，Q 点到达C 点后，立即以同样的速度返回，运动到终点A ，在点Q 开始运动后，P 、Q 两点之间的距离能否为2个单位？如果能，请求出此时点P 表示的数；如果不能，请说明理由．35．如图，点A 、B 是数轴上的两个点，它们分别表示的数是2-和1． 点A 与点B 之间的距离表示为AB ．（1）AB= ．（2）点P 是数轴上A 点右侧的一个动点，它表示的数是x ，满足217x x ++-=，求x 的值．（3）点C 为6． 若点A 以每秒1个单位长度的速度向左运动，同时，点B 和点C 分别以每秒2个单位长度和5个单位长度的速度向右运动．请问：BC AB -的值是否随着运动时间t （秒）的变化而改变？ 若变化，请说明理由；若不变，请求其值．36．已知x ＝﹣3是关于x 的方程（k +3）x +2＝3x ﹣2k 的解．（1）求k 的值；（2）在（1）的条件下，已知线段AB ＝6cm ，点C 是线段AB 上一点，且BC ＝kAC ，若点D 是AC 的中点，求线段CD 的长．（3）在（2）的条件下，已知点A 所表示的数为﹣2，有一动点P 从点A 开始以2个单位长度每秒的速度沿数轴向左匀速运动，同时另一动点Q 从点B 开始以4个单位长度每秒的速度沿数轴向左匀速运动，当时间为多少秒时，有PD ＝2QD ？37．如图，OC 是AOB ∠的角平分线，OD OB ⊥，OE 是BOD ∠的角平分线，85AOE ∠=（1）求COE ∠；（2）COE ∠绕O 点以每秒5的速度逆时针方向旋转t 秒（013t <<），t 为何值时AOC DOE ∠=∠；（3）射线OC 绕O 点以每秒10的速度逆时针方向旋转，射线OE 绕O 点以每秒5的速度顺时针方向旋转，若射线OC OE 、同时开始旋转m 秒（024.5m <<）后得到45AOC EOB ∠=∠，求m 的值． 38．已知线段AD ＝80，点B 、点C 都是线段AD 上的点．（1）如图1，若点M 为AB 的中点，点N 为BD 的中点，求线段MN 的长；（2）如图2，若BC ＝10，点E 是线段AC 的中点，点F 是线段BD 的中点，求EF 的长； （3）如图3，若AB ＝5，BC ＝10，点P 、Q 分别从B 、C 出发向点D 运动，运动速度分别为每秒移动1个单位和每秒移动4个单位，运动时间为t 秒，点E 为AQ 的中点，点F 为PD 的中点，若PE ＝QF ，求t 的值．39．如图1，点A ，B ，C ，D 为直线l 上从左到右顺次的4个点．(1) ①直线l上以A，B，C，D为端点的线段共有条；②若AC=5cm，BD=6cm，BC=1cm，点P为直线l上一点，则PA+PD的最小值为 cm；(2)若点A在直线l上向左运动，线段BD在直线l上向右运动，M，N分别为AC，BD的中点（如图2），请指出在此过程中线段AD，BC，MN有何数量关系并说明理由；(3)若C是AD的一个三等分点，DC＞AC，且AD=9cm，E，F两点同时从C，D出发，分别以2cm/s，1cm/s的速度沿直线l向左运动，Q为EF的中点，设运动时间为t，当AQ+AE+AF=32AD时，请直接写出t的值．40．如图1，点O为直线AB上一点，过点O作射线OC，OD，使射线OC平分∠AOD．（1）当∠BOD＝50°时，∠COD＝°；（2）将一直角三角板的直角顶点放在点O处，当三角板MON的一边OM与射线OC重合时，如图2．①在（1）的条件下，∠AON＝°；②若∠BOD＝70°，求∠AON的度数；③若∠BOD＝α，请直接写出∠AON的度数（用含α的式子表示）．41．已知：∠AOB＝140°，OC，OM，ON是∠AOB内的射线．（1）如图1所示，若OM平分∠BOC，ON平分∠AOC，求∠MON的度数：（2）如图2所示，OD也是∠AOB内的射线，∠COD＝15°，ON平分∠AOD，OM平分∠BOC．当∠COD绕点O在∠AOB内旋转时，∠MON的位置也会变化但大小保持不变，请求出∠MON的大小；（3）在（2）的条件下，以∠AOC ＝20°为起始位置（如图3），当∠COD 在∠AOB 内绕点O 以每秒3°的速度逆时针旋转t 秒，若∠AON ：∠BOM ＝19：12，求t 的值．42．已知∠AOB 和∠AOC 是同一个平面内的两个角,OD 是∠BOC 的平分线.(1)若∠AOB=50°,∠AOC=70°,如图(1),图(2),求∠AOD 的度数；(2)若∠AOB=m 度,∠AOC=n 度,其中090090180m n m n ＜＜，＜＜，＜ 且m n ＜，求∠AOD 的度数(结果用含m n 、的代数式表示)，请画出图形，直接写出答案．43．射线OA 、OB 、OC 、OD 、OE 有公共端点O ．（1）若OA 与OE 在同一直线上（如图1），试写出图中小于平角的角；（2）若∠AOC＝108°，∠COE＝n°（0＜n ＜72），OB 平分∠AOE，OD 平分∠COE（如图2），求∠BOD 的度数；（3）如图3，若∠AOE＝88°，∠BOD＝30°，射OC 绕点O 在∠AOD 内部旋转（不与OA 、OD 重合）．探求：射线OC 从OA 转到OD 的过程中，图中所有锐角的和的情况，并说明理由．【参考答案】***试卷处理标记，请不要删除一、选择题1．B解析：B【解析】试题分析：根据该图形的上下底边平行且相等的特点可得旋转一周后得到的平面应是平行且全等的关系，即可得到结果.由题意得该图形旋转后可得上下底面是平行且半径相同的2个圆，应为圆柱，故选B．考点：本题考查的是旋转的性质点评：解答本题的关键是熟练掌握长方形绕长或宽旋转一周得到的几何体是圆柱．2．A解析：A【解析】【分析】把x=3代入方程3x﹣a=0得到关于a的一元一次方程，解之即可．【详解】把x=3代入方程3x﹣a=0得：9﹣a=0，解得：a=9．故选A．【点睛】本题考查了一元一次方程的解，正确掌握解一元一次方程的方法是解题的关键．3．A解析：A【解析】【分析】x=代入方程，即可求出a的值.直接把2【详解】解：∵x=2是关于x 的一元一次方程ax-6+a=0 的解，x=代入方程，得：∴把2-+=，a a260a=；解得：2故选：A.【点睛】本题考查了解一元一次方程，解题的关键是熟练掌握解一元一次方程的方法.4．D解析：D【解析】【分析】根据方向角的定义和角平分线的定义即可得到结论.【详解】∵OA方向是北偏西40°方向，∴∠AOC=40°+90°=130°.∵OB平分∠AOC，∴∠BOC12=∠AOC=65°.故选：D.【点睛】本题考查了方向角、角平分线的定义、角的和差定义等知识，解题的关键是理解方向角的概念，学会用方向角描述位置，属于中考常考题型.5．D解析：D【解析】【分析】所含字母相同，相同字母的指数也相同的项叫同类项，由此可确定.【详解】A选项，相同字母的指数不同，不是同类项，A错误；B选项，3x字母出现在分母上，不是整式，更不是单项式，B错误；C选项，不含有相同字母，C错误；D选项，都是数字，故是同类项，D正确.【点睛】本题考查了同类项，熟练掌握同类项的定义是解题的关键.6．C解析：C【解析】【分析】科学记数法的表示形式为a×10n的形式，其中1≤|a|＜10，n为整数．确定n的值时，要看把原数变成a时，小数点移动了多少位，n的绝对值与小数点移动的位数相同．当原数绝对值≥1时，n是正数；当原数的绝对值＜1时，n是负数．【详解】将115000用科学记数法表示为：1.15×105．故选C．【点睛】本题考查了科学记数法的表示方法．科学记数法的表示形式为a×10n的形式，其中1≤|a|＜10，n为整数，表示时关键要正确确定a的值以及n的值．7．D解析：D【解析】【分析】根据整式的加减运算法则即可求解.【详解】35xy xy-=2xy-【点睛】此题主要考查整式的运算，解题的关键是熟知整式的加减运算法则.8．C解析：C【解析】【分析】直接利用有理数、无理数、正负数的定义分析得出答案．【详解】0既不是正数也不是负数，0是有理数．故选C【点睛】此题主要考查了实数，正确把握实数有关定义是解题关键．9．B解析：B【解析】根据不等式的性质在不等式两边加（或减）同一个数（或式子），不等号的方向不变；不等式两边乘（或除以）同一个正数，不等号的方向不变；不等式两边乘（或除以）同一个负数，不等号的方向改变即可得出答案：A、不等式两边都减3，不等号的方向不变，正确；B、乘以一个负数，不等号的方向改变，错误；C、不等式两边都加3，不等号的方向不变，正确；D、不等式两边都除以一个正数，不等号的方向不变，正确．故选B．10．C解析：C【解析】【分析】【详解】解:分底面周长为4π和2π两种情况讨论，先求得底面半径，再根据圆的面积公式即可求解：①底面周长为4π时，半径为4π÷π÷2=2，底面圆的面积为π×22=4π；②底面周长为2π时，半径为2π÷π÷2=1，底面圆的面积为π×12=π．故选C．11．C解析：C【解析】【分析】根据合并同类项法则逐一进行计算即可得答案.A. 22232x x x -=，故该选项错误；B. 222325x x x +=，故该选项错误；C. 22330x y yx -=，故该选项正确D. 4x y +,不能计算，故该选项错误故选：C【点睛】本题考查了合并同类项，掌握合并同类项法则是解题的关键.12．D解析：D【解析】锥体必有一个顶点和一个底面，一个曲面；柱体必有两个底面（上底和下底），其他部分可能是平面，也可能是曲面，有两个面互相平行且大小相同，余下的每个相邻两个面的交线互相平行.故选D.13．D解析：D【解析】【分析】直接利用方向角的定义得出∠2的度数．【详解】如图所示：由题意可得：∠1=20°，∠ABC =90°，则∠2=90°-20°=70°，故超市（记作C ）在蕾蕾家的南偏东70°的方向上．故选：D ．【点睛】本题考查了方向角的定义，正确根据图形得出∠2的度数是解答本题的关键．14．A解析：A【解析】解：由题意得：x -1=0，2y +1=0，解得：x =1，y =12-，∴x +y =11122-=．故选A ． 点睛：本题考查了非负数的性质．几个非负数的和为0，则每个非负数都为0．解析：D【解析】【分析】一副三角板中的度数，用三角板画出角，无非是用角度加减，逐一分析即可．【详解】︒=︒+︒，则81︒角能画出；解：A、814536︒=︒+︒-︒，则63角能画出；B、63367245︒=︒-︒，则54可以画出；C、549036D、55°不能写成36°、72°、45°、90°的和或差的形式，不能画出；故选：D．【点睛】此题考查的知识点是角的计算，关键是用三角板直接画特殊角的步骤：先画一条射线，再把三角板所画角的一边与射线重合，顶点与射线端点重合，最后沿另一边画一条射线，标出角的度数．二、填空题16．或【解析】【分析】设经过t秒时间A、B间的距离为个单位长度，分两种情况：①B在A的右边；②B在A的左边．由BA=3分别列出方程，解方程即可；【详解】解：设经过t秒时间A、B间的距离为个单位解析：3或5【解析】【分析】设经过t秒时间A、B间的距离为3个单位长度，分两种情况：①B在A的右边；②B在A 的左边．由BA=3分别列出方程，解方程即可；【详解】解：设经过t秒时间A、B间的距离为3个单位长度，此时点A表示的数是：10-7t，点B 表示的数是：-2-4t.①当B在A的右边时：（10-7t）-（-2-4t.）=3，解得：t=3；②当B在A的左边时：（-2-4t.）-（10-7t）=3，解得：t=5；故答案为：3或5本题考查一元一次方程的应用和数轴，解题关键是掌握点的移动与点所表示的数之间的关系，根据题目给出的条件，找出等量关系列出方程，再求解．17．150【解析】设该商品的标价为每件x元，由题意得：80%x﹣100=20，解得：x=150，故答案为150．解析：150【解析】设该商品的标价为每件x元，由题意得：80%x﹣100=20，解得：x=150，故答案为150．18．1或5【解析】【分析】此题借助数轴用数形结合的方法求解．由于点A与原点0的距离为2，那么A 应有两个点，分别位于原点两侧，且到原点的距离为2，这两个点对应的数分别是-2和2．A向右移动3个单位长解析：1或5【解析】【分析】此题借助数轴用数形结合的方法求解．由于点A与原点0的距离为2，那么A应有两个点，分别位于原点两侧，且到原点的距离为2，这两个点对应的数分别是-2和2．A向右移动3个单位长度，通过数轴上“右加左减”的规律，即可求得平移后点A表示的数．【详解】点A在数轴上距离原点2个单位长度，当点A在原点左边时，点A表示的数是-2，将A向右移动3个单位长度，此时点A表示的数是-2+3=1；当点A在原点右边时，点A表示的数是2，将A向右移动3个单位，得2+3=5．故答案为1或5．【点睛】此题考查数轴问题，根据正负数在数轴上的意义来解答：在数轴上，向右为正，向左为负．19．【解析】【分析】根据题意列出关于a的方程，利用平方根定义求出a的值即可．【详解】解：根据题意得：0.5（a2+4）=10，整理得：a2=16，解得：a=±4，故答案为：±4．【点睛解析：4±【解析】【分析】根据题意列出关于a 的方程，利用平方根定义求出a 的值即可．【详解】解：根据题意得：0.5（a 2+4）=10，整理得：a 2=16，解得：a=±4，故答案为：±4．【点睛】此题考查了开平方运算，熟练掌握运算法则是解本题的关键．20．【解析】【分析】先根据题意算出∠AOC,再由平分的条件算出∠BOC.【详解】∵，,∴∠AOC=∠AOD -∠COD=135°-75°=60°,∵OB 平分∠AOC,∴∠BOC=.故答案解析：【解析】【分析】先根据题意算出∠AOC,再由平分的条件算出∠BOC.【详解】∵135AOD ∠=︒，75COD ∠=︒,∴∠AOC=∠AOD-∠COD=135°-75°=60°,∵OB 平分∠AOC,∴∠BOC=1302AOC ∠=︒.故答案为:30.【点睛】本题考查角度的计算,关键在于结合图形进行计算. 21．＞．【解析】【分析】首先计算出、的差，再分析差的正负性可得答案.【详解】M﹣N＝5x2﹣2x﹣1﹣（4x2﹣2x﹣3），＝5x2﹣2x﹣1﹣4x2+2x+3，＝x2+2＞0，∴M＞N解析：＞．【解析】【分析】首先计算出M、N的差，再分析差的正负性可得答案.【详解】M﹣N＝5x2﹣2x﹣1﹣（4x2﹣2x﹣3），＝5x2﹣2x﹣1﹣4x2+2x+3，＝x2+2＞0，∴M＞N，故答案为：＞．【点睛】此题主要考查了整式的加减，关键是注意去括号时符号的变化.22．－2a3(答案不唯一)【解析】【分析】根据单项式系数、次数的定义来求解．单项式中数字因数叫做单项式的系数，所有字母的指数和叫做这个单项式的次数．依此写出一个系数是-2，次数是3的单项式．【详解析：－2a3(答案不唯一)【解析】【分析】根据单项式系数、次数的定义来求解．单项式中数字因数叫做单项式的系数，所有字母的指数和叫做这个单项式的次数．依此写出一个系数是-2，次数是3的单项式．【详解】解：系数是-2，次数是3的单项式有：-2a3．（答案不唯一）故答案是：-2a3（答案不唯一）．【点睛】考查了单项式的定义，注意确定单项式的系数和次数时，把一个单项式分解成数字因数和字母因式的积，是找准单项式的系数和次数的关键．23．3【解析】【分析】直接利用单项式的次数的确定方法得出即可.【详解】单项式－4x2y的次数是2+1=3.故答案为：3.【点睛】本题考查了有关单项式的概念，正确把握单项式次数的确定方法是解析：3【解析】【分析】直接利用单项式的次数的确定方法得出即可.【详解】单项式－4x2y的次数是2+1=3.故答案为：3.【点睛】本题考查了有关单项式的概念，正确把握单项式次数的确定方法是解题的关键.24．93【解析】【分析】理解成绩的记法: +8,0，-8，+13的含义，正数表示比标准高，负数表示比标准低．根据有理数加法即可求解．【详解】解：∵∴最高分记为：+13∴最高分记为：80+解析：93【解析】【分析】理解成绩的记法: +8,0，-8，+13的含义，正数表示比标准高，负数表示比标准低．根据有理数加法即可求解．【详解】-<<+<+解：∵80813∴最高分记为：+13∴最高分记为：80+13=93（分）故答案为:93【点睛】本题考查了把实际问题转化为加法计算题，掌握有理数加法是解题的关键．25．30°．【解析】【分析】观察图形可得：所求∠BOC的度数恰好是三角板的两个直角的和减去∠AOD的度数，据此求解即可.【详解】解：因为∠AOB=90°，∠COD=90°，∠AOD=150°，解析：30°．【解析】【分析】观察图形可得：所求∠BOC的度数恰好是三角板的两个直角的和减去∠AOD的度数，据此求解即可.【详解】解：因为∠AOB=90°，∠COD=90°，∠AOD=150°，所以∠BOC=∠AOB+∠COD－∠AOD=30°.故答案为：30°．【点睛】本题以学生常见的三角板为载体，主要考查了角的和差关系，解答的关键是通过观察发现图形中所求角与已知各角的关系.三、解答题26．（1）.见解析；（2）该几何体的表面积为24.【解析】【分析】（1）主视图有2列，每列小正方形数目分别为1，3；左视图有2列，每列小正方形数目分别为3，2；2）上下共有2×3个正方形；左右共有5个正方形；前后共有4个正方形．【详解】（1）如图所示.（2）该几何体的表面积为345224++⨯=（）.【点睛】本题考查几何体的三视图画法．由几何体的俯视图及小正方形内的数字，可知主视图的列数与俯视数的列数相同，且每列小正方形数目为俯视图中该列小正方形数字中的最大数字．左视图的列数与俯视图的行数相同，且每列小正方形数目为俯视图中相应行中正方形数字中的最大数字．27．（1）40︒；（2）BOE DOA EOD ∠+∠=∠，详见解析；（3）不成立，BOE EOD DOA ∠+∠=∠，详见解析；（4）BOE DOA EOD ∠+∠=∠；【解析】【分析】（1）（2）根据角平分线定义得出∠DOC ＝12∠AOC ，∠EOC ＝12∠BOC ，求出∠DOE ＝12（∠AOC ＋∠BOC ）＝12AOB ，即可得出答案；（3）根据角平分线定义得出∠DOC ＝12∠AOC ，∠EOC ＝12∠BOC ，求出∠DOE ＝12（∠AOC−∠BOC ）＝12∠AOB ，即可得出答案；（4）根据角平分线定义即可求解．【详解】解：当射线OC 在∠AOB 的内部时，∵OD ，OE 分别为∠AOC ，∠BOC 的角平分线，∴∠DOC ＝12∠AOC ，∠EOC ＝12∠BOC ， ∴∠DOE ＝∠DOC ＋∠EOC ＝12（∠AOC ＋∠BOC ）＝12∠AOB ， （1）若∠AOB ＝80°，则∠DOE 的度数为40°．故答案为：40；（2）∠DOE ＝∠DOC ＋∠EOC ＝12∠AOC ＋12∠BOC ＝∠BOE ＋∠DOA ． （3）当射线OC 在∠AOB 的外部时 （1）中的结论不成立．理由是：∵OD 、OE 分别是∠AOC 、∠BOC 的角平分线∴∠COD＝12∠AOC，∠EOC＝12∠BOC，∠DOE＝∠COD−∠EOC＝12∠AOC−12∠BOC＝∠AOD−∠BOE．（4）∵OD，OE分别为∠AOC，∠BOC的角平分线，∴∠DOC＝∠AOD，∠EOC＝∠BOE，∴∠DOE＝∠DOC＋∠EOC＝∠BOE＋∠DOA．故∠BOE、∠EOD、∠DOA之间数量关系是∠DOE＝∠BOE＋∠DOA．故答案为：∠DOE＝∠BOE＋∠DOA．【点睛】本题考查了角的有关计算和角平分线定义，能够求出∠DOE＝12∠AOB是解此题的关键，求解过程类似．28．(1) 51°48′,(2). OG是EOB∠的平分线,理由详见解析.【解析】【分析】(1)根据平角,直角的性质,解出∠BOG的度数即可.(2)根据角平分线的性质算出答案即可.【详解】(1)由题意得:∠AOC=38°12′,∠COG=90°,∴∠BOG=∠AOB-∠AOC-∠COG=180°-38°12′-90°=51°48′.(2) OG是∠EOB的平分线,理由如下:由题意得:∠BOG=90°-∠AOC,∠EOG=90°-∠COE,∵OC是∠AOE的平分线,∴∠AOC=∠COE∴∠BOG=90°-∠AOC=90°-∠COE=∠EOG∴OG是∠EOB的平分线.【点睛】本题考查角度的计算,关键在于对角度认识及角度基础运算.29．203 -．【解析】【分析】利用题中的新定义运算方法求出x的值，代入原式计算即可得到结果．【详解】解：根据题中的新定义运算方法得：6x-4（3x-2）=10，去括号得：6x-12x+8=10，解得：x=13-，∴2（x-2）-3（x+1）=2x-4-3x-3=-x-7=-（13-）-7 =203-． ∴代数式2（x-2）-3（x+1）的值是203-． 【点睛】考查了解一元一次方程，以及代数式求值，解一元一次方程的步骤为：去分母，去括号，移项合并，把x 系数化为1，求出解．30．（1）设学校要印制x 份节目单时费用是相同的，根据题意，得0.8 1.5900 1.59000.6x x ⨯+=+⨯，解得1200x =，答：略（2）甲厂需：0.8×1.5×1500＋900=2700（元），乙厂需：1.5×1500＋900×0.6=2790（元），因为2700＜2790，故选甲印刷厂所付费用较少.【解析】（1）根据两个印刷厂费用是相同的，找出关于节目单的数量等量关系，列出方程即可 （2）准确计算甲、乙两家的费用，再比较即可31．-1【解析】【分析】先分别求出两方程的解，根据相反数的定义求出k 的值，再代入代数式即可求解.【详解】解：解方程532x x -=，得1x =， 根据题意，方程2463k x x +-=的解为1x =-， 把1x =-代入方程2463k x x +-=，得()214163k --⨯-=， 解，得72k =. 所以55447111772k ⎛⎫⎛⎫-=-⨯=- ⎪ ⎪⎝⎭⎝⎭.【点睛】此题主要考查解方程的应用，解题的关键熟知一元一次方程的解法.32．（1）35°或125°；（2）45°或75°；（3）10°或130°.【解析】【分析】（1）设∠A的半余角的度数为x°，根据半余角的定义列方程求解即可；（2）设∠DMN为x°.根据折叠的性质和半余角的定义解答即可；（3）分两种情况讨论：①当∠DMN=45°时，∠DMD'=90°，∠AMP=50°，∠DMA'=80°，根据∠A′MD′=∠DMD'-∠DMA'计算即可.②当∠DMN=75°时，∠DMD'=150°，∠AMP=80°，∠DMA'=20°，根据∠A′MD′=∠DMD'-∠DMA'计算即可.【详解】（1）设∠A的半余角的度数为x°，根据题意得：|80°-x|=45°80°-x=±45°∴x=80°±45°，∴x=35°或125°.（2）设∠DMN为x°，根据折叠的性质得到∠D'MN=∠DMN=x°.∴∠AMD'=180°－2x.∵∠AMD′与∠DMN互为“半余角”，∴|180°－2x－x|=45°，∴|180°－3x|=45°，∴180°－3x=45°或180°－3x=－45°，解得：x=45°或x=75°.（3）分两种情况讨论：①当∠DMN=45°时，∠D'MN=45°，∴∠DMD'=90°，∠AMP=∠A'MP=45°+5°=50°，∴∠DMA'=180°-2∠AMP=80°，∴∠A′MD′=∠DMD'-∠DMA'=90°-80°=10°.②当∠DMN=75°时，∠D'MN=75°，∴∠DMD'=150°，∠AMP=∠A'MP=75°+5°=80°，∴∠DMA'=180°-2∠AMP=20°，∴∠A′MD′=∠DMD'-∠DMA'=150°-20°=130°.综上所述：∠A′MD′的度数为10°或130°.【点睛】本题考查了一元一次方程的应用以及折叠的性质.理解“半余角”的定义是解答本题的关键.33．（1）113，23（2）所以和谐数为15，26，37，48，59；（3）F（t）的最大值是34．【解析】【分析】(1)根据题意,按照新定义的法则计算即可.(2)根据新定义的”和谐数”定义,将数用a,b 表示列出式子解出即可.(3)根据(2)中计算的结果求出最大即可.【详解】解：（1）F （13）＝113，F （24）＝23; （2）原两位数可表示为10(1)b a -+新两位数可表示为101a b +-∴10110(1)36a b b a +----=∴101101036a b b a +--+-=∴9927a b -=∴3a b -=∴3a b =+ （16b <≤且b 为正整数 ）∴b =2,a =5; b =3,a =6, b =4,a =7,b =5,a =8 b =6,a =9所以和谐数为15，26，37，48，59(3)所有“和谐数”中，F （t ）的最大值是34． 【点睛】本题为新定义的题型,关键在于读懂题意,按照规定解题. 四、压轴题34．（1）2412--；；（2）2t ；362t -；（3）P 、Q 两点之间的距离能为2，此时点P 点Q 表示的数分别是2-，2，2226,33． 【解析】【分析】 ()1因为点A 在原点左侧且到原点的距离为24个单位长度，所以点A 表示数24-；点B 在点A 右侧且与点A 的距离为12个单位长度，故点B 表示：241212-+=-；()2因为点P 从点A 出发，以每秒运动2两个单位长度的速度向终点C 运动，则t 秒后点P 表示数242t(0t 18-+≤≤，令242t 12-+=，则t 18=时点P 运动到点C)，而点A 表示数24-，点C 表示数12，所以()PA 242t 242t =-+--=，PC 242t 12362t =-+-=-；()3以点Q 作为参考，则点P 可理解为从点B 出发，设点Q 运动了m 秒，那么m 秒后点Q 表示的数是244m -+，点P 表示的数是122m -+，再分两种情况讨论：①点Q 运动到点C 之前；②点Q 运动到点C 之后．【详解】()1设A 表示的数为x ，设B 表示的数是y ．。
人教版七年级英语下册期末培优测试卷含答案
人教版七年级英语下册期末培优测试卷一、单项选择。
(每小题1分，共10分)1. —Tina, are you going to play ____ chess on School Day?—Yes, and I'll also play ____ violin that afternoon.A. the; theB. the; /C. /; theD. /; /2. Lisa is ____ late for school. She is always the first to come to school.A. neverB. oftenC. alwaysD. usually3. —Mary! What color do you like, red ____ green?—I don't like red and I don't like green, either. I like blue.A. andB. orC. butD. so4. —Linda, can you eat in the classroom?—No, we can't. It is one of the ____ in our school.A. ideasB. testsC. gamesD. rules5. If you are____ singing，you can join the music club.A. interested inB. made ofC. busy withD. afraid of6. —Who is the girl ____ your left in the picture?—She is my friend, Jane. She's ____ Canada.A. on; fromB. in; atC. on; atD. in; from7. Tony usually ____ to school on time, but this morning he ____ late.A. gets; arrivesB. got; arrivedC. gets; arrivedD. got; arrives8. —____ was your party yesterday?—Excellent. I liked it very much.A. HowB. WhenC. WhatD. Where9. Can you help me ____ cabbages? I want to make vegetable pies for lunch.A. cut upB. get upC. put upD. wake up10. —I will take a vacation next week.—____.A. Of courseB. See youC. Have funD. Thank you二、完形填空。
人教版七年级英语上册UNIT 7 培优测试卷含答案
人教版七年级英语上册UNIT 7 培优测试卷一、单项选择(每小题1分，共10分)1. Tomorrow is my grandmother's birthday. We will have a family party to ____ it.A. fallB. playC. prepareD. celebrate2. There are a lot of ways to keep healthy. ____，we can do more exercise and eatless junk food.A. To our surpriseB. In the endC. For exampleD. For a while3. —What about this blue schoolbag? It's twenty dollars.—OK. ____.A. Here you areB. I'll take itC. Nice to meet youD. You're welcome4. There are some ____ on my bike, so I can find it easily.A. marksB. problemsC. yardsD. feelings5. Little Jack is only two years old, but he can spell his ____ name.A. differentB. modernC. ownD. similar6. —____ is the art festival?—I think it's in July, but I'm not sure.A. WhenB. HowC. WhereD. What7. —What is the ____ of your guitar?—It's 800 yuan. I think it's cheap.A. numberB. heightC. soundD. price8. Don't ____ the candles, or we can't see the things in the room.A. talk aboutB. look forC. blow outD. work out9. —What day is your ____ Day in China, Li Xiaofei?—October 1st.A. NationalB. MusicalC. FunnyD. International10. Many people enjoy ____ zongzi by themselves at the Dragon Boat Festival.A. makingB. makeC. makesD. to make二、完形填空(每小题1分，共10分)Hi, I'm Sarah. Today is the fifth of March and it is a __11__ day for my sister Tracy—it is her birthday. We do many things to __12__ it.First, our parents take us to a sports store. They buy Tracy a pair of ping-pong bats, because she loves __13__. Then we buy some fruit and a cake. Do we have a __14__ for Tracy? Yes, we have it in the evening. Ann, Kitty and Cindy __15__ the party. The three are all __16__ of No. 7 Middle School, and they are classmates, __17__. Tracy gets a book from Ann and a radio from Kitty. What does she __18__ from Cindy? Cindy buys Tracy a nice T-shirt, __19__ it is a little smaller for her. She says she'll change a bigger one for her and bring it to Tracy next Monday.At the party, we __20__ some interesting games. We really have a good time!11. A. boring B. bigC. tidyD. right12. A. mean B. singC. celebrateD. know13. A. ping-pong B. baseballC. basketballD. football14. A. sale B. testC. tripD. party15. A. help with B. come toC. ask forD. think about16. A. students B. teachersC. womenD. boys17. A. well B. veryC. tooD. only18. A. buy B. getC. wantD. know19. A. after B. soC. andD. but20. A. sell B. takeC. playD. lose三、阅读理解(每小题2分，共30分)AThe girl in the picture is May. Why is her name May? Well,because her birthday is in May.Every year, May has a birthday party at home. Her friends cometo her home and say happy birthday to her. They watch TV, playgames and eat the birthday cake. They always have a good time at May's birthday party. May can also get many gifts from her friends. May thinks the gifts are valuable and she likes them very much.May has a brother. His birthday is in April. Can you guess(猜)his name? Haha, his name is April. April is 10 and he likes playing basketball. He thinks it's fun, and he always plays it with May on Sundays.21. When is the girl's birthday?A. It's in May.B. It's in April.C. It's in March.D. It's in February.22. What do May and her friends do on her birthday?①watch TV ②play games③eat the cake ④eat chickenA. ①④B. ③④C. ①②③D. ①②③④23. What does the underlined word “valuable”mean in Chinese?A. 便宜的B. 珍贵的C. 易碎的D. 普通的24. How old is April?A. Eight.B. Nine.C. Ten.D. Eleven.25. Which is NOT true?A. May and April are sister and brother.B. May has only one friend, April.C. April likes playing basketball.D. May has her birthday party at home.BThe birthday is a special day for most people. We may spend much time celebrating it. On our birthdays, we may go for a trip, have a party or watch a movie with our parents or friends. We can also enjoy some special food. Do you know what people eat on their birthdays around the world? Here are three people from different countries. They tell us what food they eat on their birthdays.Liu Jing is from Beijing. “The long noodles are a symbol of long life. In China, red is a symbol of luck. We think red eggs bring us good luck. So you can see Chinese eat long noodles and red eggs when they celebrate their birthdays，” says Liu Jing.“I am so happy because today is my birthday. I want to have a birthday party. At the party, we can play games, sing and dance. We can also eat a big birthday cake with fifteen candles. I'm sure we can have a good time at my birthday party，” says David from America.“In Canada, people put a coin (硬币) into the cake. If the birthday person eats the cake with the coin, he or she will be lucky. I am so happy because I often eat the cake with a coin，” says Sandy.26. What does the underlined word “symbol” mean in Chinese?A. 举办B. 象征C. 组织D. 担心27. How old is David?A. 13.B. 14.C. 15.D. 16.28. Which of the following is RIGHT?A. Red eggs are a symbol of long life in Liu Jing's family.B. People play games, sing and dance at the birthday party in David's country.C. David is from Canada.D. Sandy never eats the cake with a coin.29. According to the first paragraph, people may ____ on their birthdays.①watch ball games ②go for a trip③watch a movie ④have a birthday partyA. ②③④B. ①③④C. ①②④D. ①②③30. The passage is mainly about ____.A. what to eat on one's birthday in different countriesB. why we celebrate our birthdaysC. three people from different countriesD. how to celebrate one's birthdayCWhen people talk about birthdays, they usually think of cakes, presents, and a happy song called Happy Birthday to You. In fact(事实上), there are many kinds of ways to celebrate birthdays.In China, some bi rthday children start the day by saying “Hello”to their parents. Some parents give their children toys as gifts. And the birthday children usually eat noodles. It means the birthday child has a long life.In Canada, children put butter(奶油)on their noses on their birthdays. The butter keeps children away from bad luck. In Ireland, people lift(举起)birthday children upside down and make them touch the floor for every year of their age.In the USA and Britain, the family makes a big birthday cake. There are candles on the cake. One candle is for one year. The birthday child makes a wish and blows out all the candles.In Spain, people pull(拉)the birthday child's ear to wish him a happy birthday. If he is thirty, his friends and his family pull his ear thirty times, once for each year. It's very interesting.In some other countries, the birthday child sits on a special chair. All the adults lift the chair up and down. If the birthday child is eight years old, they lift the chair eight times.Different countries have different ways to celebrate their birthdays. But you can celebrate your birthday in your own way.31. How many countries are mentioned (提及) in the passage?A. Five.B. Six.C. Seven.D. Eight.32. Why do children put butter on their noses on their birthdays in Canada?A. Because it is very interesting.B. Because it means the birthday child has a long life.C. Because they make the birthday children touch the floor every year.D. Because the butter keeps children away from bad luck.33. In Britain, if a child is eleven years old, he should blow out ____ candles.A. elevenB. twelveC. twentyD. thirteen34. In ____，people pull the birthday child's ear to wish him a happy birthday.A. ChinaB. IrelandC. SpainD. Canada35. What is the passage mainly about?A. Birthdays of different countries.B. Birthday presents of different countries.C. Different ways to celebrate birthdays.D. Birthday children of different countries.四、阅读还原(每小题2分，共10分)Jane is an English girl. She is in Shanghai with her parents now. 36. ________ It is Jane's 13th birthday.In the morning, she comes out of her room to have breakfast. Her parents don't say “Happy birthday！” to her. 37. ________ At school, she meets two of her good friends Li Mei and Lin Qi, but they don't say anything. “No one knows when my birthday is, ” she says to herself. 38. ________ After school, she walks home alone(独自). When she gets home, she surprisedly finds her good friends are in her house. 39. ________ And many other gifts a re on the table, too. 40. ________ “Happy birthday, my dear! We just want to give you a surprise, ” says Mrs. Miller. Jane is really happy and they have a good time!五、根据首字母及汉语提示完成句子。
人教版七年级英语上册期末培优测试卷含答案
人教版七年级英语上册期末培优测试卷一、单项选择(每小题1分，共10分)1. —You look very nice in the blue T-shirt.—____.A. You're welcomeB. Thank youC. Let's goD. Nice to meet you2. My hobby is ____ my brother's. We both like playing soccer.A. similar toB. good withC. different fromD. angry with3. My friend Sally ____ from the chair and walks to the door.A. changesB. risesC. hikesD. notices4. Peter is very ____，so he can work out the math problem easily.A. smartB. handsomeC. funnyD. busy5. —Sandy, where is your schoolbag?—Look! It's ____ the table.A. inB. underC. onD. after6. Lisa is ____ seven years old, but she can play the piano very well.A. laterB. alreadyC. soonD. only7. Today's Chinese ____ is to draw a mind map(思维导图) of The Emperor's NewClothes. I think it's interesting.A. storyB. clubC. historyD. homework8. I don't have a football, ____ my brother Sam does.A. soB. butC. orD. and9. —What's the ____ of that T-shirt?—It's 20 dollars.A. colorB. nameC. numberD. price10. —Ben, can you finish the task on time?—I'm sure I have the ____ to make it, sir.A. informationB. newsC. abilityD. duty二、完形填空(每小题2分，共20分)David is a five-year-old boy. He is very naughty (淘气的), __11__ his mother always says, “No, David！” Here are two __12__ about him: No, David! and David Goes to School.In the first book, David always does wrong things at __13__. He plays with balls in the room. He watches too much TV. And he __14__ with food at dinner time. His mother finds it is __15__ to let him have a good habit(习惯). She is always not happy with David but she loves David very much.In the next book, David is a __16__. What is he like at school? He is always __17__ for school. And he runs everywhere in the __18__. He also eats in class. But his classmates all like him, because David is __19__ to them. He is always a friendly boy.The two books are very __20__. They help me think about some questions, too.I want to buy them for my brother, Jimmy.11. A. or B. soC. becauseD. but12. A. lessons B. picturesC. booksD. photos13. A. home B. schoolC. tableD. store14. A. sells B. eatsC. playsD. helps15. A. healthy B. easyC. interestingD. difficult16. A. student B. starC. babyD. teacher17. A. relaxing B. lateC. rightD. sure18. A. store B. classroomC. bedD. shop19. A. fun B. wellC. niceD. cool20. A. different B. similarC. boringD. interesting三、阅读理解(每小题2分，共30分)AHi, boys and girls！I'm a student at Jingwai Mingde Primary School in Yunnan. The school has a history of about 16 years. Now there are over 1, 000 teachers and students in my school. I think my school is really cool.Do you know why I think so? Well, in my school, we students have lessons with teachers, and we also have farm work to do. Our teachers are happy to teach us how to do farm work and we are happy to learn it. We all think it's useful and fun. We grow vegetables and fruit in our free time. We can learn much and we can also eat the vegetables and fruit when they are ripe. They are healthy. And you know what? There is a small zoo in our school. You can see chickens and other animals in it.Oh, I really love my school! Do you want to be a student of my school?21. How old is the writer's school?A. Fourteen years old.B. About sixteen years old.C. Fifty years old.D. Fifty-five years old.22. From the passage, we know that ____.A. the school is very smallB. the school isn't in ChinaC. the writer likes his school lifeD. there are over 1, 000 students in the writer's school23. What does the writer think of doing farm work at school?①Difficult. ②Useful. ③Interesting. ④Boring.A. ①②B. ②③C. ①④D. ②④24. The underlined word “ripe” means ____ in Chine se.A. 成熟的B. 发酵的C. 过期的D. 冰鲜的25. What's the second paragraph(段落) about?A. How big the school is.B. How cool the school is.C. Why there is a zoo in the school.D. Why the school has farm work.BWe have many things to do every day. It is a good idea to make plans for our days.Some people are very good at making plans. They make plans with pictures, drawings and beautiful colors. They put their plans on the Internet. Many people like them because they are really helpful.Here are some important things we can learn about making plans：First, don't make plans just about studying. Make some time to have fun, eat, sleep or go out with friends.Second, __▲__. Be sure to mark the important things so that you can see them easily and do them first.Third, don't work on one thing for too long at a time. After 90 minutes, you get very tired. You need to do something else as a break.Last, after you finish one thing, cross it off(划掉) your plan! This gives you a very good feeling, and makes you want to finish the next thing.Want to make your study easy? Making plans and keeping them can help!26. The underlined word “them” refers to “____”.A. the good plansB. the Internet starsC. the beautiful drawingsD. the ideas about making plans27. What's the first thing we can learn about making plans?A. To keep your plans.B. To ask your friends for help.C. To make plans with pictures.D. To make some time to relax.28. The best one for “__▲__” is “____”.A. choose a good notebookB. take care of your feelingsC. important things come firstD. see how your friends make plans29. The underlined word “break” means “____” in Chinese.A. 决定B. 建议C. 方向D. 休息30. How many suggestions(建议) about making plans does the passage talk about?A. 3.B. 4.C. 5.D. 6.CIt's time for a Chinese class! Miss Li takes some pictures to her students. She says, “Good morning, everyone. Look at these pictures. What can you find？”Tony says, “The woman in the pictures is doing farm work (农活). After that, she makes food for her son. These pictures tell us how great the mother is！”Miss Li says, “Very good! So please say thanks to your mother when you see her. Any different ideas？”“From the first nine pictures, I know that it is not easy to get food，” Daming says. “But in the last picture, the boy plays with the food. It's not right. We can't waste food. ”Miss Li says, “Good! This morning we will learn a poem (诗)—Sympathy for Peasants. ”Sympathy for Peasants—Li ShenAt noon they hoe up weeds；Their sweat drips on the soil.Who knows the rice that feedsIs the fruit of hard toil!31. Which may (可能) be the right time for the Chinese class?32. What does Tony learn from the pictures?A. The mother is great.B. Farm work is difficult to do.C. It's not right to play with food while we eat.D. Don't choose food.33. Which of the blanks can't be filled with (用……填) “waste”？A. Why ____ money on clothes you don't need?B. Mrs. Black is happy, because her son likes to ____ rice.C. Don't ____ time, Bill. We have six things to do!D. You shouldn't ____ your life in playing computer games!34. Miss Li teaches her students ____ in class.A. how to do farm workB. how to save(节约) foodC. the poem about saving foodD. how to show our love35. Which of the following is RIGHT?A. Miss Li is an English teacher.B. Tony doesn't like the son in the picture.C. The Chinese name of the poem is 《悯农》.D. Miss Li is not happy with Tony's idea.四、任务型阅读(每小题2分，共10分)Hello, my name is Tim Cook. I'm 64 years old. I come from America. Now I am the CEO of Apple Inc. Many people say I'm successful (成功的), and they want to know what I do in one day. Now let me talk about it.I usually get up very early in the morning. Iget up at 3：45 a. m. every day. Then I read about700 e-mails. At 5：00 a. m. , I exercise for 30 to 45minutes. I think health comes first. After that, I takea shower. I like to have a cup of coffee before goingto Apple Park at about 8：00 a. m. After getting to Apple Park, I start my work quickly. In the afternoon, I work in my office at Apple Park. I usually have lots of work to do. When I have some free time, I go to take some exercise. It is relaxing.In the evening, I like to read books. I usually go to bed before 8：45. Why do I go to bed so early? Because I want to get 7 hours of sleep.36. What is Tim Cook?_________________________________________________________________ 37. Which word do you think can best describe(描述) Apple Park?_________________________________________________________________ 38. How long does Tim Cook sleep every day?_________________________________________________________________ 39. Please complete the chart (完成图表)._________________________________________________________________ 40. What do you think of Tim Cook's life? Why?_________________________________________________________________ 五、短文填空(每小题1. 5分，共15分)用所给词的适当形式填空。
人教版七年级英语上册UNIT 5 培优测试卷含答案
人教版七年级英语上册UNIT 5 培优测试卷一、单项选择(每小题1分，共10分)1. —Let's play ____ guitar.—That sounds boring. I want to play____ basketball.A. /; /B. /; theC. the; /D. the; the2. Zhang Sijia often ____ litter in the park near her home at weekends.A. movesB. spendsC. collectsD. turns3. We all like Mrs. Green. She is good ____ children.A. onB. inC. withD. at4. The talent show gives the students a chance(机会) to show their special ____.A. changesB. abilitiesC. feelingsD. information5. I want to watch birds, take photos and collect plants and insects, so I can join the____.A. book clubB. cooking clubC. nature clubD. music club6. David has been in China for many years, so he can ____ much Chinese.A. talkB. tellC. speakD. say7. The maths test is too difficult for them, so they ____ finish it.A. can'tB. canC. mustn'tD. must8. —Do you like the picture by Bob White?—Yes, it looks nice and full of ____！A. abilitiesB. newsC. reasonsD. feelings9. Our Chinese teacher is nice. She always ____ a story to make her class interesting.A. comes outB. puts outC. acts outD. goes out10. —____？—He can make model planes.A. What can Jack doB. Can Jack make model planesC. What does Jack likeD. Does Jack like model planes二、完形填空(每小题1分，共10分)Jack is my good friend. He likes __11__. He plays the drums well. He starts a band(乐队)with his friends, Dave and Linda. They want to __12__ the music club at school. Dave is good __13__ singing and playing the guitar. Linda can play the piano __14__. Their band doesn't have a __15__，so they want a good name for it. They __16__ and play their own(自己的)songs.They don't have __17__ to play the instruments at school, so they always play them on the weekend. They play for two hours. After that, they are very __18__.Jackson is one of the members(成员)of a Chinese band. He sings Jack's song, and it's very famous. Jack and his friends __19__ the song very much. They want to __20__ with him. They also want to sing along with him one day.11. A. maths B. EnglishC. historyD. music12. A. help B. getC. joinD. buy13. A. for B. toC. atD. with14. A. good B. littleC. muchD. well15. A. book B. friendC. nameD. dinner16. A. write B. askC. teachD. see17. A. money B. timeC. funD. homework18. A. cool B. freeC. happyD. difficult19. A. likes B. likeC. needsD. need20. A. play games B. tell storiesC. do kung fuD. make friends三、阅读理解(每小题2分，共30分)Asoccer. People play soccer for fun all over the UK. It's a very popular sport.playing the piano. She is in the music club. I'm good at drawing. I'm in the21. Carl plays soccer ____.A. with his brothersB. with his sistersC. every SaturdayD. every Sunday22. What does Fiona like to do in the evening?A. To play the drums.B. To watch TV.C. To play chess.D. To tell stories.23. Who is good with children?A. Carl.B. Alan.C. Fiona.D. Sarah.24. What club is Mary in?A. The art club.B. The soccer club.C. The music club.D. The basketball club.25. ____ people like playing basketball.A. TwoB. ThreeC. FourD. FiveBAs we all know, there are different kinds of clubs in the US middle schools, such as the music club, the sports club, the chess club and the art club. But do you know the homework club? It is a popular (受欢迎的) club in many US middle schools. More and more students spend their afternoons in the homework club. The US middle school students need a quiet place to study. But games, computers and TVs are all around kids at home. So the homework club is just for them to do their homework. The club is quiet and it's also good for students to read their favourite books. Some teachers are there, too. They can answer students' questions and help with their homework.After the students finish their homework, they can go home. Then they can play games or watch TV happily.26. How many kinds of clubs are mentioned in the passage?A. Three.B. Four.C. Five.D. Six.27. When can the students go to the homework club?A. In the morning.B. At noon.C. In the afternoon.D. At night.28. What cannot the students do in the homework club?A. Ask teachers questions.B. Read books.C. Do their homework.D. Play games.29. Which is NOT true about the homework club?A. It is popular in many US middle schools.B. All the US middle school students like it.C. It's good for students to study in it.D. The teachers in it can help students study.30. What is the best title for the text?A. Students and HomeworkB. The Homework ClubC. Clubs in the US Middle SchoolsD. Study and HobbiesCMiddle school students like joining clubs. Joining clubs in middle school can help you make new friends. It can help you know a lot of things. Students need to know something about the clubs.School clubs take timeJoining a school club isn't just about having fun, and kids must know that being in a club needs time and that they need to do a lot of things.________Many students like to meet new friends in the clubs. Lindsay Moore from No. 8 Middle School says, “In the music club, I meet Jane. She likes music and she can play the piano very well. I like music too, and I can play the guitar. So Jane can help me play the piano. I can help her play the guitar. It's so great. ”What club to joinThere are many clubs in schools. Join a club that you like. If you like drawing, you can join the art club. If you like basketball, you can join the sports club. But what club to join is up to (取决于) you. If your school doesn't have clubs, you can start a club.They're funJoining a club can be a lot of fun, so students like the clubs.31. Joining a club can make you ____.A. freeB. rightC. busyD. healthy32. Which is the best to put in the blank (空白)?A. When to join the clubsB. Why to join the clubsC. How to join the clubsD. Where to join the clubs33. What can Jane do?A. She can play the piano.B. She can play the guitar.C. She can play basketball.D. She can sing and dance.34. Tina likes playing the drums. So she can join the ____ club according to thepassage.A. artB. musicC. sportsD. game35. Which is the best title for the passage?A. Middle School StudentsB. School Clubs Are FunC. Join a Middle School ClubD. Clubs in Primary Schools四、任务型阅读(每小题2分，共10分)Do you know 3D modeling? It is a way to make a 3D model of something on the computer. Chenchen, a 12-year-old girl from Wuxi, Jiangsu, likes it very much. In the girl's house, you can see interesting 3D models here and there.Chenchen learns 3D modeling all by herself. Now, she can do modeling work very well. She often does it in her free time. First, she draws a 3D picture on her computer. She can select tools(选取工具)with one hand and draw with the other hand on the computer. Then she uses a small 3D printer(打印机) to turn the picture into a real thing.Chenchen's mother, Ms. Huang, often puts Chenchen's videos on the Internet. Many people see her works and like them very much. “Her works are great. It's not easy for a child of her age to make them，” they say.Now, Chenchen even makes money with 3D modeling. Ms. Huang says Chenchen can use the money as she wishes (如她所愿).What a nice girl!36. How old is Chenchen?_________________________________________________________________ 37. When does Chenchen often do 3D modeling?_________________________________________________________________ 38. Who often puts Chenchen's videos on the Internet?_________________________________________________________________ 39. What do people think of Chenchen's works?_________________________________________________________________ 40. Please give a title to the passage._________________________________________________________________ 五、用方框中所给词的适当形式填空(每小题2分，共10分)interest， choose， ability， mind， collect41. To keep a fresh ________，we should sleep more than eight hours every night.42. My sister likes ________ beautiful fallen leaves in fall.43. The little boy is ________ in music and he can sing a lot of songs.44. Danny wants to buy a cap and he ________ a white one in the shop.45. Reading ________ is very important in our study.六、短文填空(有两项多余)(每小题1分，共10分)Hello, my name is Zhu Wei. In our class, I have four good 46. ________. They come from different countries. Now let me 47. ________ you something about them. Peter comes from the UK. He is a sports star in our school sports 48. ________. He can play soccer very well. He can 49. ________ play basketball very well. Jill is an 50. ________ girl. Her mother is a great musician. Jill is in our school music club. She is good at 51. ________ many kinds of instruments such as the guitar, the drums and the violin. She often plays them at the school music festival. Jason is from South Korea but he can 52. ________ English very well. After class, he often tells English stories to me. I like listening to them, 53. ________ they are really fun. Lisa is from Canada. She is a really kind girl. 54. ________ the weekend, she often asks me to go to the old people's home with her. Lisa can sing and dance for the old. I 55. ________ sing or dance, but I can draw pictures for them.七、书面表达(20分)假如你是一所双语学校的学生会的成员，你校想要组建一支乐队并在艺术节上演出。
人教版七年级数学上册第四章培优测试卷含答案
人教版七年级数学上册第四章培优测试卷七年级数学·上(R版)时间：90分钟满分：120分一、选择题(每题3分，共30分)1．下列几何体中，是圆锥的为()2．【2021·百色】已知∠α＝25°30′，则它的余角为()A．25°30′ B．64°30′ C．74°30′ D．154°30′3．下列作图语句错误．．的是()A．延长线段ABB．延长射线ABC．直线m和直线n相交于点PD．在射线AB上截取线段AC，使AC＝3 cm4．下列立体图形中，都是柱体的为()5．如图，表示∠1的其他方法中，不正确．．．的是()A．∠ACBB．∠CC．∠BCAD．∠ACD6．如图所示的几何体从上面看到的图形为()17．在下列生活、生产现象中，不可以用基本事实“两点确定一条直线”来解释的有()①平板弹墨线②建筑工人砌墙③会场摆直茶杯④弯河道改直A．1个B．2个C．3个D．4个8．【教材P138例4变式】如图，在灯塔O处观测到轮船A位于北偏西54°的方向，同时轮船B在南偏东15°的方向，那么∠AOB的度数为()A．69°B．111°C．141°D．159°9．在直线上顺次取A，B，C三点，使得AB＝5 cm，BC＝3 cm，如果O是线段BC的中点，那么线段AO的长度是()A．8 cm B．7.5 cm C．6.5 cm D．2.5 cm 10．如图，点A，B是正方体的两个顶点，将正方体按如下方式展开，则在展开图中点A，B的位置标注正确的是()二、填空题(每题3分，共24分)11．【2020·广州】已知∠A＝100°，则∠A的补角等于________．12．七棱柱有________个面，________个顶点．13．【教材P130习题T10改编】已知线段AB＝8 cm，在直线AB上画线段BC，使它等于3 cm，则线段AC＝______________.214．用“度、分、秒”表示21.24°为__________．15．【教材P136例1变式】【中考·大连】如图，点O在直线AB上，射线OC平分∠BOD，若∠COB＝35°，则∠AOD等于________．(第15题)(第17题)(第18题)16．【教材P134练习T1改编】钟表在8：25时，时针与分针的夹角是________度．17．如图是由一些相同的小正方体搭成的几何体从正面、左面、上面看到的形状图，则搭成这个几何体的小正方体的个数是________．18．如图，将一副三角尺叠放在一起，使直角顶点重合于O，则∠AOC＋∠DOB ＝________.三、解答题(19～22题每题10分，其余每题13分，共66分)19．【教材P128练习T2改编】如图，已知线段a，b，画一条线段，使它等于3a －b(用直尺和圆规画图，不要求写画法)．20．一个角的余角比它的补角的13还少20°，求这个角的度数．3421．一个几何体从三个方向看到的图形如图所示(单位：cm)． (1)写出这个几何体的名称：__________；(2)若其从上面看为正方形，根据图中数据计算这个几何体的体积．22．如图，点C 是AB 的中点，D ，E 分别是线段AC ，CB 上的点，且AD ＝23AC ，DE ＝35AB .若AB ＝24 cm ，求线段CE 的长．23．如图，OD 平分∠BOC ，OE 平分∠AOC ，∠BOC ＝60°，∠AOC ＝58°.(1)求∠AOB 的度数．(2)①求∠DOC和∠ADE的度数；②判断∠DOE与∠AOB是否互补，并说明理由．24．已知在同一平面内，∠AOB＝90°，∠AOC＝60°.(1)∠COB＝____________．(2)若OD平分∠BOC，OE平分∠AOC，则∠DOE的度数为________．(3)在(2)的条件下，将题目中的∠AOC＝60°改成∠AOC＝2α(α＜45°)，其他条件不变，你能求出∠DOE的度数吗？若能，请写出求解过程；若不能，说明理由.5答案一、1.B 2.B 3.B 4.C 5.B 6.C7.A8．C9.C10.A二、11.80°12.9；1413.11 cm或5 cm14．21°14′24″15.110°16.102.517.518.180°点思路：根据角的和差关系，将∠AOC表示为∠AOD＋∠COD，则∠AOC＋∠DOB＝∠AOD＋∠DOB＋∠COD＝∠AOB＋∠COD＝90°＋90°＝180°.三、19.解：如图，AE＝3a－b .20．解：设这个角的度数为x.依题意得90°－x＋20°＝13(180°－x)，解得x＝75°.答：这个角的度数为75°. 21．解：(1)长方体(2)体积为3×3×4＝36(cm3)．22．解：因为点C是AB的中点，所以AC＝BC＝12AB＝12×24＝12(cm)．所以AD＝23AC＝23×12＝8(cm)．所以CD＝AC－AD＝12－8＝4(cm)．因为DE＝35AB＝35×24＝14.4(cm)，所以CE＝DE－CD＝14.4－4＝10.4(cm)．23．解：(1)∠AOB＝∠BOC＋∠AOC＝60°＋58°＝118°.(2)①因为OD平分∠BOC，OE平分∠AOC，所以∠DOC＝∠BOD＝12∠BOC＝12×60°＝30°，∠AOE＝∠COE＝12∠AOC＝12×58°＝29°.6②∠DOE与∠AOB不互补．理由：因为∠DOC＝30°，∠COE＝29°，所以∠DOE＝∠DOC＋∠COE＝59°.所以∠DOE＋∠AOB＝59°＋118°＝177°.所以∠DOE与∠AOB不互补．24. 点易错：本题根据题目条件解答时，OC是在∠AOB内部，还是在∠AOB外部，其位置不确定，且它们都符合条件，因此解答本题应分OC在∠AOB 外部和内部两种情况讨论.解：(1)30°或150°(2)45°(3)能求出∠DOE的度数．需要分两种情况讨论：①当OC在∠AOB内部时，如图①所示．因为OD平分∠BOC，OE平分∠AOC，所以∠COD＝12∠BOC ，∠COE＝12∠AOC.所以∠DOE＝∠COD＋∠COE＝12∠BOC＋12∠AOC＝12(90°－2α)＋12·2α＝45°.②当OC在∠AOB外部时，如图②所示．因为OD平分∠BOC，OE平分∠AOC，所以∠COD＝12∠BOC，∠COE＝12∠AOC.所以∠DOE＝∠COD－∠COE＝12∠BOC－12∠AOC＝12(90°＋2α)－12·2α＝45°.综上所述，∠DOE的度数是45°.78。
人教版七年级英语下册UNIT 3 培优测试卷含答案
人教版七年级英语下册UNIT 3 培优测试卷一、单项选择。
(每小题1分，共10分)1. —Hi, Lily! Do you like dogs?—No, I'm ____ them.A. goodB. good withC. afraidD. afraid of2. —____ is it from here to your school?—It's about two kilometers.A. How longB. How muchC. How oldD. How far3. Tom is good at baseball and his ____ is to be a sports star.A. habitB. dreamC. storyD. class4. —Does your mother go to work by ____ car?—No. She always takes ____ subway.A. the; /B. a; theC. /; theD. the; a5. —What do you ____ the trip?—I ____ it is wonderful.A. think of; thinkB. think; think ofC. thinks of; thinksD. thinks; thinks of6. —There's no bridge over the river. How can they ____ it?—By boat.A. runB. cleanC. findD. cross7. Mr. Smith is ____. He has an ____ son.A. forty years old；eight-year-oldB. forty-year-old；eight-year-oldC. forty years old；eight-years oldD. forty-year-old；eight-years old8. In our hometown, ____ villagers go to big cities to look for jobs.A. hundred ofB. two hundredsC. hundreds ofD. two hundreds of9. —Helen likes dancing. Is that ____？—Yes. She is in the dancing club now.A. trueB. freeC. goodD. late10. —Helen, can you play basketball with me after school?—____. I need to ask my mom first.A. You're rightB. You, tooC. Here you areD. I'm not sure二、完形填空。
人教部编版七年级语文上册期末培优测试卷含答案
人教部编版七年级语文上册期末培优测试卷一、积累与运用(18分)1．下列词语中加点字的读音、字形完全正确的一项是()(2分) A．纯悴．(cuì)倜．傥(tì)鄙薄．(báo)见异思迁．(qiān)B．应和．(hè) 棱．镜(líng) 徘．徊(pái) 默．不关心(mò)C．静谧．(mì) 坍．塌(tān) 抖擞．(sǒu) 翻来覆．去(fù)D．突兀．(wù) 着．落(zháo) 废墟．(xū) 美不盛．收(shèng)2．依次填入下面句子横线处的词语最恰当的一项是()(2分)语文世界风光无限。
在这里，我们________跟随朱自清寻觅到春天的踪迹，欣赏到大自然的________，________聆听了“至圣先师”孔子的________，品味了中华文化。
有人说，语文是一本读不完的百科全书，是一个折射人生的多彩世界。
A．不仅银装素裹还教训B．不仅花团锦簇还教诲C．因为银装素裹所以教诲D．因为花团锦簇所以教训3．下列各项中分析有误的一项是()(2分)踏入．．无限，令人陶醉、神．．，风光．．的语文阅读之旅，一篇篇美文．．七年级往。
在朱自清的春天里，我们看到了五幅美丽的图画；在老舍先生描绘的济南冬天里，我们欣赏到了一块温晴舒适的冬天宝地；在莫怀戚一家人的散步过程中，懂得了家庭以和为贵、珍惜亲情的重要；伴随鲁迅回忆的脚步，回到了他童年五彩斑斓的家园、团结友爱成长；吟咏曹操的诗，学会了奋发进取、壮志在心……A．开头句中“踏入”的词性为动词，“年级”“美文”的词性为名词。
B．结合语境，加点词“风光”指的是七年级语文书中各篇文章所呈现的美好的景色、情感、美好时光等。
C．语段中画波浪线的句子运用了拟人的修辞手法。
D．语段中画横线的句子是一个病句，应在“成长”后加“的乐土”。
4．文学、文化常识与名著阅读。
人教版七年级英语上册UNIT 4 培优测试卷含答案
人教版七年级英语上册UNIT 4 培优测试卷一、单项选择(每小题1分，共10分)1. Andy has maths ____ 9 o'clock ____ Monday morning.A. at; inB. on; onC. from; inD. at; on2. Read the book Cute Pets, ____ you will know how to take care of your cat.A. orB. whenC. andD. but3. History is my favourite subject ____ it's very interesting.A. ifB. andC. whenD. because4. I love going to school because everyone in my class ____ friendly.A. amB. isC. areD. be5. —What's your ____ for studying so hard?—I study hard for a good future.A. giftB. reasonC. exerciseD. minute6. I like playing the violin. What ____ do you like playing?A. cultureB. informationC. activityD. instrument7. I am good ____ playing basketball. And playing sports is good ____ me.A. at; atB. for; atC. at; forD. for; for8. You make the same mistake again. I remember ____ you how to work out this kindof problem several times.A. to tellB. tellingC. tellD. tells9. My mother tells us an ____ story, and the story makes us feel____.A. exciting; excitingB. excited; excitedC. exciting; excitedD. excited; exciting10. —I like Chinese very much. ____—I really love maths.A. What about you?B. How are you?C. Is it good?D. Do you think so?二、完形填空(每小题1分，共10分)Hi! My name is Alice. I'm very __11__ today because it's the first day of my new term. From 7：30 to 8：15 is my first class, Chinese. It is my favourite __12__. Then at 8：25 I have maths. I don't like it because it is __13__. At 9：20, I have __14__. It is very useful. I like it. I have PE at 10：15. We __15__ football with our PE teacher. Lunch is from 11：30 to 12：30. I eat __16__. I have rice, chicken and vegetables __17__ lunch. In the afternoon, I have three classes. School __18__ at 16：00.I have two good friends. They are Mike and Tom. They are nice to __19__. Next week is Tom's twelfth __20__. We must think about his party.11. A. free B. tidyC. happyD. right12. A. subject B. habitC. festivalD. number13. A. interesting B. easyC. boringD. relaxing14. A. breakfast B. scienceC. picturesD. questions15. A. buy B. watchC. sellD. play16. A. healthy B. fineC. lateD. well17. A. for B. withC. toD. from18. A. begins B. meetsC. finishesD. knows19. A. you B. meC. himD. her20. A. class B. tripC. birthdayD. month三、阅读理解(每小题2分，共30分)A21. When does Xiao Xue have English classes?A. On Monday.B. On Tuesday.C. On Friday.D. On Saturday.22. What does Linda think of history?A. Difficult.B. Boring.C. Useful.D. Interesting.23. What is Lisa's favourite subject?A. English.B. History.C. Geography.D. Maths.24. In the passage, we can find ____ teacher(s).A. oneB. twoC. threeD. four25. From the passage, we can know ____.A. maths is Frank's favourite subjectB. Mary likes to have history classesC. Frank doesn't like his geography teacherD. Lisa has a great maths teacherBSome boys and girls don't like maths. They think it's difficult. But in fact(实际上), it isn't so difficult to learn maths well. Here is what you can do.Listen carefully in class. The maths teacher knows so much. When you listen carefully, you can know much, too. So be a careful student in class and listen carefully.Ask your classmates for help. Your maths teacher isn't always with you. When you find a maths problem and you can't work it out，please ask your classmates after class. A good classmate is a good friend. He or she must be happy to help you.Practise(练习)it every day. Do you want to be good at maths? It takes time. You can't learn it well in a day. So practise it every day and then you'll find it so easy. Maths is a useful subject. Let's do our best(尽我们最大的努力)to learn it well.26. The passage(文章) is for ____.A. teachersB. parentsC. friendsD. students27. What does the writer(作者) think of maths?A. Fun.B. Useful.C. Boring.D. Difficult.28. What can't you do to learn maths well?A. Practise maths every day.B. Ask your classmates for help.C. Play much with friends after class.D. Be careful in class.29. What does the underlined word(画线词)“it” in Paragraph 3 refer to(指的是)?A. A maths book.B. A maths class.C. A maths test.D. A maths problem.30. What does the passage mainly talk about?A. The writer's favourite teacher.B. The writer's favourite subjects.C. How we can learn maths well.D. Why some students don't like maths.CThis term, Xiao Yang has a new subject—geography, but he doesn't like it. “It's not useful at all，” he thinks. So he always plays games in class.Mr. Wang is his geography teacher. He is nice to the students in his class. One day, he finds Xiao Yang isn't interested in his class. He comes to Xiao Yang's desk and says, “Hi, Xiao Yang. Where are you from？”“I'm from Sichuan, Mr. Wang. ”“Oh, that's a ni ce place! Can I ask you some questions？”“Sure. ”“Why does Sichuan have mountains (山)? Where does the Jialing River start? And why is it so hot in Chengdu from July to September？”“I'm sorry, Mr. Wang. I don't know，” Xiao Yang says.“Do you want to know？” Mr. Wang asks.“Yes, Mr. Wang. But how？”“Well, you see, your games can't help you, but geography can. So now let's start the lesson, OK？”“OK. ”31. What does Xiao Yang always do in geography class?A. He always listens to the teacher.B. He always eats food.C. He always plays games.D. He always answers questions.32. Mr. Wang is a ____.33. When is it very hot in Chengdu?A. In March.B. In May.C. In July.D. In December.34. Why does Mr. Wang ask Xiao Yang questions?A. He is nice to his students.B. He wants to know Xiao Yang well.C. He wants to make Xiao Yang like geography.D. He wants Xiao Yang to do his homework carefully.35. What does Xiao Yang think of geography at last?A. Useful.B. Difficult.C. Easy.D. Boring.四、任务型阅读(每小题2分，共10分)My name is Cindy. I'm thirteen years old this year. I'm a middle school student. I'm in Class Three, Grade Seven. I have two new subjects this year. They are science and history. My favourite day is Thursday because I have science on that day.I have a twin sister. Her name is Sonia. She is also a middle school student. She is in Class Six, Grade Seven. She likes English. Her favourite day is Monday because she has English on that day.My father is Mr. White. He is a maths teacher. His favourite day is Sunday because he can go to the baseball club. He likes playing baseball.My mother is Mrs. White. She is a clerk(店员) at Huaxing Clothes Store. Her favourite day is Saturday because on that day she doesn't go to work, and she can play tennis with her friends. Oh, my mother likes playing tennis.36. What is Cindy's favourite subject?Cindy's favourite subject is ________.37. How old is Sonia this year?She is ________ years old this year.38. How many daughters does Mr. White have?Mr. White_________________________________________________________________.39. When does Mr. White go to the baseball club?Mr. White goes to the baseball club __________________________________. 40. Where does Mrs. White work?Mrs. White works __________________________________________.五、根据所给提示完成句子(每小题2分，共10分)41. I like science because I think it's ________(/ˈjuːsfl/).42. The mother thinks her son is really ________(优秀的，极好的).43. I wish you a bright ________(未来).44. Playing computer games is a serious ________(问题) for students around theworld.45. We have a ________(生物) class every week.六、综合填空(每小题1分，共10分)根据短文内容或所给提示完成短文。
人教版七年级英语下册UNIT 8 培优测试卷含答案
人教版七年级英语下册UNIT 8 培优测试卷一、单项选择。
(每小题1分，共10分)1. —Excuse me. Where is the shopping center?—It's in ____ front of the police station. You can find it ____ your left.A. /; inB. /; onC. the; atD. the; to2. I want to have lunch with my friends. Where can I find a ____？A. libraryB. restaurantC. bankD. office3. You can walk ____ the street when traffic lights are green.A. crossB. acrossC. alongD. down4. —How much are the hamburgers?—We don't need to buy them. They are ____.A. busyB. freeC. rightD. early5. —____ can I get to your school?—Go down this street and turn right.A. WhereB. WhatC. HowD. When6. —John, do you ____ go to the zoo?—Yes. I go there every weekend.A. againB. soonC. neverD. often7. —What are you doing, Lisa?—I'm watching the cat____ up the tree.A. to climbingB. climbsC. to climbD. climbing8. Linda thinks the math homework is ____ and she can finish it ____.A. easy; easyB. easily; easilyC. easily; easyD. easy; easily9. —Is there any soup in the kitchen?—____. But there is some salad.A. Yes, there isB. No, there isn'tC. Yes, it isD. No, it isn't10. —Thank you for helping me. —____.A. No problemB. No, thanksC. Sounds goodD. You, too二、完形填空。
人教版七年级英语下册UNIT 6 培优测试卷含答案
人教版七年级英语下册UNIT 6 培优测试卷一、单项选择。
(每小题1分，共10分)1. —Is Molly____ American?—Yes. She's from ____ USA.A. a; theB. an; aC. a; anD. an; the2. —What's Tom doing?—He's talking ____ the phone.A. withB. onC. toD. under3. —Where is Jimmy? I can't find him.—He ____ soccer on the playground with other students.A. playB. playsC. is playingD. will play4. We have two more classes. ____ is physics, and____ is politics.A. One; anotherB. One; the otherC. One; othersD. One; other5. Those ____ are playing with their two ____ teachers.A. children; menB. child; menC. children; manD. child; man6. —Do you often play computer games, Peter?—Not really. I____play them for fun sometimes.A. thenB. tooC. justD. very7. —What do you think of the Chinese food?—Oh, it's ____. I like it very much.A. deliciousB. smartC. terribleD. bad8. —____ the children ____ online?—Yes, they are. Don't make noise!A. Are; studyingB. Is; studyingC. Do; studyD. Does; study9. —Do you live with your grandparents?—No. They stay in my hometown(家乡)and I ____ them very much.A. missB. forgetC. teachD. wish10. —Hi, Jenny. What are you doing?—____ I'm just washing the clothes for my sisters.A. Well, nothing much.B. Glad to hear that.C. Sure, no problem.D. Very kind of you.二、完形填空。
人教版七年级道德与法治上册期中培优测试卷含答案
人教版七年级道德与法治上册期中培优测试卷一、选择题(每小题3分，共45分)1．初中是我们人生中的一个重要阶段，我们作为中学生，应该() A．两耳不闻窗外事，一心只读圣贤书B．爱护学校的一切，给自己留下美好的回忆C．尽情享受青春的快乐，不必刻苦学习D．任凭自己自由发展，给自己无限制的自由空间2．梦想的实现要靠我们的不懈努力。
下列能够很好地体现这一观点的是()A．采菊东篱下，悠然见南山B．天生我材必有用，千金散尽还复来C．生当作人杰，死亦为鬼雄D．不经一番寒彻骨，怎得梅花扑鼻香3．进入中学，新的目标和要求激发着我们的潜能，激励着我们不断实现自我超越。
我们似乎每天都有做“最好的我”的生命冲动。
下列句子的内涵与上述内容最为一致的是()A．“苟日新，日日新，又日新。
”——《礼记·大学》B．“恰同学少年，风华正茂。
”——《沁园春·长沙》C．“工欲善其事，必先利其器。
”——《论语·卫灵公》D．“独学而无友，则孤陋而寡闻。
”——《礼记·学记》4．习近平总书记在考察岳麓书院时对青年学子说：“这是一个英雄辈出的时代，你们这个年纪正当其时。
”习近平总书记希望同学们不负青春、不负韶华、不负时代，珍惜时光好好学习，为实现中华民族伟大复兴贡献聪明才智。
中学生应该()①在实践中锤炼自己，完善自我，提升自身素质②只考虑自己的兴趣爱好，知道自己想做什么③把自己的人生规划同国家民族的发展结合起来④让个人的青春梦想在新时代的自主创业中完美绽放A．①③B．①④C．②③D．②④5．以下内容是某班同学在“学习心得分享会”中的一些发言。
他们的发言告诉我们()①学习需要独立思考，掌握科学的方法②学习压力抑制学习兴趣③学习能充盈精神、开阔视野④学习中的苦恼大于快乐A．①②B．①③C．②④D．③④6．下面的《互相嘲笑》启示我们要()①勇于揭露他人缺点②学会欣赏他人优点③敢于挑战权威④全面客观认识自己A．①②B．①③C．②④D．③④7．为了让同学们更好地认识自己，某校七年级二班开展了“我眼中的同桌”主题班会。
人教版七年级英语上册STARTER UNITS 1-3 培优测试卷含答案
人教版七年级英语上册STARTER UNITS 1－3 培优测试卷一、单项选择(每小题1分，共10分)1. 下列字母的小写形式在四线三格中只占一格的是____。
A. HB. PC. TD. W2. 下列都是元音字母的一组是____。
A. Ee; Ii; Kk; Oo; UuB. Aa; Ee; Ii; Oo; UuC. Aa; Dd; Ee; Hh; OoD. Ee; Ii; Oo; Uu; Vv3. 下列字母组合表示“中国人民解放军”的是____。
A. UNB. VRC. PRCD. PLA4. Hey, Cindy! I don't ____ your help. I can do it well.A. findB. callC. knowD. need5. —____ tigers can you see in the zoo?—Five.A. How oldB. How manyC. What colorD. What day6. Fifteen apples are in the box, ____ for boys and six for girls.A. sixB. sevenC. eightD. nine7. I can't find my cat. Oh, it's ____ the bed. My socks are under it, too.A. inB. underC. onD. behind8. —The shop sells school ____ like pencils, pens and rulers.—Let's go after school.A. ballsB. thingsC. cardsD. clothes9. “I” ____ the ninth letter (字母) in the 26 letters.A. amB. isC. areD. be10. —Is that ____ bicycle? —No. It's ____ bicycle.A. you; PeterB. your; PeterC. you; Peter'sD. your; Peter's二、完形填空(每小题1分，共10分)There are __11__ bedrooms in my house. One is for my parents and the other is __12__ my brother and me. The first bedroom is my __13__. It is big. A bed，a table and a sofa are __14__ it. They are all __15__，because brown is their favourite __16__. The second bedroom is ours. A __17__ is on the wall. We __18__ happy in the picture. There are two chairs in our room. Some __19__ about animals are on them. We both like reading. Oh, __20__ is under the chair? It's our cat.11. A. one B. twoC. threeD. four12. A. at B. inC. forD. of13. A. parents' B. parent'sC. parentsD. parent14. A. on B. behindC. underD. in15. A. brown B. yellowC. redD. black16. A. yard B. lessonC. colourD. fun17. A. bottle B. keyC. pictureD. carrot18. A. look B. seeC. watchD. need19. A. books B. pensC. rulersD. maps20. A. where B. whatC. howD. whose三、阅读理解(每小题2分，共30分)AOur Schoolbags21. What color is Alice's pen?A. Yellow.B. Blue.C. Red.D. Purple.22. What can you see in Cindy's schoolbag?A. A ruler.B. A jacket.C. A map.D. A key.23. Who has a map?A. Frank.B. Cindy.C. Alice.D. Eric.24. What does all of the three people have?A. A book.B. A pen.C. A CD. D. A cup.25. Which of the following things are green?A. Alice's cup and Frank's map.B. Cindy's pen and Frank's jacket.C. Alice's cup and Frank's jacket.D. Cindy's key and Alice's ruler.BHi, I am Lily. I have my own room. It is big and nice.It has a bed and a closet. I like dolls. I have a beautiful doll. I put it on the bed.There is a desk near the closet. I usually put my bag on the desk. A lamp is on the desk too. When I study in the evening, I need the lamp.It has a chair in front of the desk. My dog is sleeping on the floor near the desk. My cat is on the chair. It is playing with a ball. It's naughty but very cute.I love my room very much. I clean it every day.26. Where is the bag?A. On the bed.B. Near the closet.C. On the desk.D. Near the desk.27. The underlined word “lamp” means “____”.A. 台灯B. 光源C. 灵感D. 照射器28. What is the structure(结构) of the text?29. Which of the following is RIGHT?A. The doll is in the closet.B. The bed is near the closet.C. There is a lamp on the desk.D. The dog is playing with a ball.30. What is the main idea(主旨) of the text?A. Lily has a small but nice room.B. Lily has many things in her room.C. Lily likes her dog and cat very much.D. Lily's room is nice and she loves it.CMy grandparents live in the countryside. We need to drive for two hours to visit them. They have a small farm. On the farm there are cows, horses, chickens and two working dogs. They want to buy some sheep and pigs, too. Every morning, the first thing Grandpa does is to feed(喂) the animals. They eat different(不同的)foods so Grandpa has to be careful. He can't give them the wrong food.When Grandma wakes up, she loves giving the two horses a nice shower (淋浴). The two horses, one brown and one black, are Grandma's favorites. She cleans them and rides them every day. When Grandma rides the horses, the two working dogs walk around(环绕)the horses and watch them.I visit my grandparents every month. When I am on the farm, I can do the same(相同的)things as my grandparents. I always have a great time there.31. What does Grandparents' farm have?A. Dogs, sheep and pigs.B. Cows, dogs and sheep.C. Cows, chickens and dogs.D. Horses, chickens and pigs.32. What does Grandpa do every morning?A. He cleans the animals.B. He gets the animals to work.C. He gives the animals some food.D. He goes to buy food for the animals.33. What do we know about the horses on the farm?A. They run very fast.B. They don't like the dogs.C. They wake up very early.D. They are different in color.34. The writer visits Grandpa and Grandma ____.A. every monthB. every two weeksC. every weekD. every day35. What is the best title(最佳标题) for the text?A. Farm AnimalsB. My Favorite AnimalsC. I Love My GrandparentsD. My Grandparents' Life on a Farm四、任务型阅读(每小题2分，共10分)Dave is in the classroom now, but he can't find his schoolbag. Where is it? Is it lost(丢失的)? No! It is in his home. He doesn't bring it to school. He calls his sister Sally and asks her to take his school things to school. Here are his school things.His schoolbag is on the chair. Under the chair is his pencil box. His notebook is on the desk. His dictionary is on the bed. His pencil isn't in the pencil box. It's on the sofa.Oh, Sally, don't forget(忘记)to take his baseball. Where is his baseball? Oh, it's under the table.36. Where is Dave now?_________________________________________________________________ 37. How many things must Sally take to school for Dave?_________________________________________________________________ 38. Where is Dave's pencil box?_________________________________________________________________ 39. What's on the sofa?_________________________________________________________________ 40. Where's Dave's baseball?_________________________________________________________________五、根据汉语意思完成句子(每小题2分，共10分)41. 你书包里有什么？What do you have ______________________？42. 你的尺子是什么颜色的？______________________ is your ruler?43. 我可以看见许多种动物。
2024-2025学年苏科版七年级数学上册期中培优测试卷
2024-2025学年苏科版七年级数学上册期中培优测试卷1.《九章算术》是我国古代数学专著，里面明确给出了负数的概念和加减法的运算法则，这在世界数学史上是最早的．若将卖出20元，记作+20元，则元应表示为（）A．买入6.8元B．卖出6.8元C．买入13.2元D．卖出13.2元2.下列各对数中，数值相等的是（）A．与B．与C．与D．与3.下列运算正确的是（）A．B．C．D．4.若，则的值（）A．1B．C．0D．或35.若有理数、在数轴上对应点的位置如图所示，则，，，，0的大小关系是（）A．B．C．D．6.关于整式，下列说法正确的是（）A．x2y的次数是2B．0不是单项式C．3πmn的系数是3D．x3﹣2x2﹣3是三次三项式7.如果，且．则下列说法中可能成立的是（）A．a、b为正数，c为负数B．a、c为正数，b为负数C．b、c为正数，a为负数D．a、c为正数，b为08.在数轴上表示a、b两数的点如图所示，则下列判断正确的是（）A．a＜b B．∣a∣＜∣b∣C．a+b＞0D．＞09.有一列数，将这列数中的每个数求其相反数得到，再分别求与1的和的倒数，得到，设为，称这为一次操作，第二次操作是将再进行上述操作，得到；第三次将重复上述操作，得到……以此类推，得出下列说法中，正确的有（）个①，，，②③．A．0B．1C．2D．310.若，则下列说法中正确的有（）．①；②；③；④；⑤．A．5个B．4个C．3个D．1个11.单项式﹣的次数是___________．12.数轴上点表示的数为-5，点与点的距离为4，则点表示的数为__________．13.若关于x，y的多项式化简后不含二次项，则______．14.当x＝3时，px3+qx+1＝2020，则当x＝﹣3时，px3+qx+1的值为_____．15.设一种运算程序是x y=a（a为常数），如果(x+1)y=a+1，x(y+1)=a-2，已知11=2，那么20102010=_____________．16.在任意n（且为整数）位正整数K的首位后添加6得到的新数叫做K的“顺数”．在K的末位前添加6得到的新数叫做K的“逆数”．若K的“顺数”与“逆数”之差能被17整除，称K是“最佳拍档数”．比如1324的“顺数”为16324，1324的“逆数”为13264，1324的“顺数”与“逆数”之差为，，所以1324是“最佳拍档数”．若一个首位是5的四位“最佳拍档数”，其个位数字与十位数字之和为8，且百位数字不小于十位数字，求符合条件的奇数N的值是_________．17.计算：(1)(2)18.（1）化简：（2）先化简，再求代数式的值，其中，．19.下表中有两种移动电话计费方式．月使用费/元主叫限定时间/主叫超时费/（元/）被叫方式一581500.25免费方式二883500.19免费考虑下列问题：（1）设一个月内用移动电话主叫为（t是正整数）．根据上表，列表说明：当t在不同时间范围内取值时，按方式一和方式二如何计费．（2）观察你的列表，你能从中发现如何根据主叫时间选择省钱的计费方式吗？通过计算验证你的看法．20.数轴上A、B、C对应的数分别是a、b、c．(1)若．①请将a、b、c填入括号内．②化简．③若点X在数轴上表示的数为x，则有最小值__________．(2)若，且，求的值．21.某市居民使用自来水按如下标准缴费（水费按月缴纳）：用户月用水量单价不超过的部分a元/超过但不超过的部分1．5a元/超过的部分2a元/(1)当时，某户一个月用了的水，求该户这个月应缴纳的水费．(2)设某户月用水量为，当时，该户应缴纳的水费为_______元（用含a，n的式子表示）．(3)当时，甲、乙两户一个月共用水，已知甲户缴纳的水费超过了24元，设甲户这个月用水，试求甲，乙两户一个月共缴纳的水费（用含x的式子表示）．22.现有5张卡片写着不同的数字，利用所学过的加、减、乘、除、乘方运算按要求解答下列问题（每张卡片上的数字只能用一次）．(1)从中取出2张卡片，使这2张卡片上数字的和最小，则和的最小值为_________．(2)从中取出2张卡片，使这2张卡片上数字的差最大，则差的最大值为________．(3)从中取出2张卡片，使这2张卡片上数字相除的商最大，则商的最大值为_________．(4)从中取出3张卡片，使这3张卡片上数字的乘积最大，乘积的最大值为__________．(5)从中取出4张卡片，使这4张卡片上的数字运算结果为24．写出两个不同．．，分．．的等式别为，．23.已知：如图，在数轴上，点O为原点，点A、点B所表示的数分别为a、b，且满足|a+40|+（b﹣20）2＝0；（1）直接写出a、b的值；a＝；b＝．（2）动点P从点A出发，以每秒m个单位长度的速度向点B匀速运动，同时动点Q从点B出发，以每秒2m个单位长度的速度在点B和原点之间做匀速往返运动，当运动时间为7秒时，点P在点A和原点之间，恰好满足点P到原点的距离是点Q到原点距离的一半，求m的值；（3）在（2）的条件下，当点P和点Q第一次相遇后，速度均变为原来的2倍，点P运动到点B后停止运动，点P停止运动后，点Q运动到原点也停止运动，t为何值时，P、Q两点间的距离为5个单位长度？。
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和易文化------七年级数学培优测试卷
时量:90分钟 满分:100分 姓名__________
一、选择题（每小题4分，共28分）以下每题的四个结论中，仅有一个是正确的，请将表示正确答案的英文字母填在每题后的圆括号内。
1．下面四个命题中，正确的命题是（ ） A ．两个不同的整数之间必定有一个正数 B ．两个不同的整数之间必定有一个整数 C ．两个不同的整数之间必定有一个有理数 D ．两个不同的整数之间必定有一个负数
2．关于x 的方程(3a ＋8b)x ＋7=0无解，则ab 是（ ） A ．正数 B ．负数 C ．非正数 D ．非负数
3．已知m 是奇数，n 是偶数，若x=p ，y=q 能使x －1998y=n 和1999x ＋3y=m 同时成立，则（ ）
A ．p ，q 都是偶数
B ．p ，q 都是奇数
C ．p 是奇数，q 是偶数
D ．p 是偶数，q 是奇数 4．若x －y=2，x 2
＋y 2
=4，则x 2013
＋y
2013
的值是（ ） A ．0 B ．2
2013 C ．－2
2013
D ．±2
2013
5．满足|a －b|＋ab=1的非负整数对(a,b)的个数是（ ） A ．1 B.2 C .3 D.4
6．一艘船从A 港到B 港顺水航行需6小时，从B 港到A 港逆水航行需8小时，若在静水条件下，从A 港到B 港需（ ）小时。
A ．7
B ．721
C ．676
D ．62
1
72．今天是星期日，从今天算起，第111…1天是星期 ( )
A. 星期一 B,星期二 C.星期四 D 星期六
二、填空题（每小题54分，共28分）
1、若()()7,132
2=-=+b a b a ，则=+22b a __________，=ab ___________。
2．一个整数与5之差的绝对值大于2011而小于2013，则这个数是
2013个1
3．已知x 2＋x －1=0，则x 4－3x 2
＋1=
4．已知数轴上表示负有理数m 的点是点M ，那么在数轴上与点M 相距|m|个单位的点中，与原点距离较远的点所对应的数是 5．若|x ＋y －1|与|x －y ＋3|互为相反数，则(x ＋y)2003
=
6．甲、乙两人骑自行车于同时同地出发，沿着圆形跑道按逆时针方向行驶，甲
每分
钟行驶跑道的89
圈，乙每分钟行驶跑道的25
24圈。
那么从出发时刻起，到他们同
时回到出发地，至少需要的时间是 分钟。
7．将2001表示为若干个（多于1个）连续正奇数的和，考虑所有不同的表示方法，将每种方法中的最大的奇数取出来归于一组。
则这组数中最大的数是
————。
三计算题(每小题8分,共24分)
1.已知实数a 、b 、c 的关系是0a <、0b >、0c <.且||||||c b a >> （ 1）在数轴上作出数a 、b 、c 的大致位置。
(2) 化简：||||||a b c b c a +--+-
2, 123456789101119971998199920002008--++--++--+⋅⋅⋅+--++⋅⋅⋅+
3,已知42008
2008200820081
(1)()
(1)(2)()b o a b a
++=--+-+--a-2求的值。
四、解答题（每小题10分，共20分）要求：写出推算过程。
1．给定任意自然数a 与b ，令a ﹡b 对于不同的a 总有不同的值，而且满足a ﹡1=1，(a ﹡b)﹡c=a ﹡(b ﹡c)，(a ﹡b)(a ﹡c)=a ﹡(b ＋c)。
求3﹡4的值。
2．10个人围成一圈，每人心里想一个数，并把这个数告诉左右相邻的两个人。
然后每个人把左右两个相邻人告诉自己的数的平均数亮出来，如图所示。
问亮5的人心中想的数是多少？
5 7 13
附答案:
一:选择题
1. C
2..C
3.D
4.D
5.C
6.C
7.D
二.填空题
1. 10 3/2
2. -2007 2017
3. 0
4. 2m
5. 1
6. 663/2
7. 669
三.计算题
(1)1.略 2. 2a
(2).0
(3).3
四.解答题
1.(1)3*4＝3*（2+2）＝（3*2）（3*2）＝｛3*（1+1）｝｛3*（1+1）｝＝
（3*1）（3*1）（3*1）（3*1）＝（3*1）^4.
因为定义了a﹡1=1,所以，（3*1）=3 则答案是3^4（即3的4次方），
(2) 答：设亮5的那个人心里想的数是x，则他左边亮6的那个人为了亮出平均数6来，则亮7的那个人心里想的数必须是（12－x）才行；5的右边为了亮出14，则亮13的那个人心里想的数必须是（28－x）才行；继续，11那个人必须心里想（x－4）才能与（28－x）平均出12来；同样亮9的那个人心里想的数必须是（x＋4）才能与（12－x）平均出8来。
所以（x＋4）与（x－4）平均出来的数是10，即x＝10。
进而亮5的人心里想的数是10，。