中考第一讲七年级上Units1-2梯级分层训练与检测

Units1-2 测试卷一、辨音：选出下面单词画线部分发音不同的选项( )1.A. d og B.mother C.brother D.son ( )2.A. next B.well C.friend D.these ( )3.A. sister B.Mike C.Smith D.Linda ( )4.A.family B.dad C.father D.Sally ( )5.A. mother B.father C.sister D.her二、根据句意及首字母提示完成单词1. Her name is Alice Brown. Alice is her f____ name.2. Ask and a____ the question.3. One and z____ is one.4. What's your phone n____ ?5. What's your ID c____number?6. My father's mother is my g____ .7. My father's brothers are my u___.8. My uncle's children are my c____.9.I am a girl. I'm my parents' d____．10. This is my f____ photo. These are my parents and this is me.三、用所给单词的适当形式填空1.____(that) are his brothers.2.Are they your____ (friend)?3. The____(girl) name is Mary.4. This is Bob and____(those) is Mary.5．-What are these?____ (it) are pencils.6. These____(watch) are Mary's.7. Gina and I____(be) in the same school.8.____(she) is my sister.____ (she) name is Linda.9. They are____(I) grandparents.____(I) father is____(they) son.10. ____( those) is a pencil.四.单项填空( ) 1. My name is____. I'm an English boy.A.Green GinaB.Gina GreenC.Brown JohnD.John Brown( ) 2. -Nice to meet you.A.Fine.B. Thank you.C. Nice to meet you, too.D. Good morning.( ) 3. -How are you? -____A.How are you?B. How do you do?C. Hi！D. Fine, thank you.( ) 4. -Is your name Brown? -____ A.Yes, it is. B.Yes, I am.C.Yes, I'm.D.No, I'm no.( ) 5.____? -It's 215-6781.A.What's thisB. What's thatC. What's your telephone numberD. What color is it( ) 6. -What ____ four and six? -Oh, it's too easy.A.isB.amC.areD.be( ) 7. I can't find ____ bag. Can you help ____?A.my; myB.me; myC.my; meD.me, me( ) 8. Mary Green is my English teacher. I call her ____.A.Ms.MaryB.Ms.GreenC.Mr.MaryD.Miss Mary( ) 9. -What color is it? - ____.A.It's a keyB.It's an orangeC.M-A-PD.Red( ) 10. This is Liu Ming. ______ phone number is 215 -6671.A.IB.YourC.HisD.He( ) 11. -Her name is Mary Green. What's her ____ name?-Green.A.firststC.fullD./( ) 12. This is ____ pen.A.aB.anC.theD./( ) 13. ____ name is Jim. ____is my brother.A.His; HisB.He; HisC.His; HeD.He; He( ) 14. Let's ____ the map.A.lookB.look atC.look toD.look like( ) 15. -Hello! I'm Cindy. -____A.Hi, Cindy! I'm Bob.B. Hi, Cindy! What's your name?C. Hi, Cindy! Fine, thank you.D. Hello! This is my phone number.五.句型转换1. I'm Gina. (用第三人数改写句子)____ ____ Gina.2. My telephone number is 625 -3920. (就画线部分提问) ____ is ____ telephone number?3. The ruler is yellow.（就画线部分提问）___ ____ is the ruler?4．Her first name is Linda. Her last name is Smith.（合并为一句）___ ____ is Linda Smith.5．His father and mother are workers.（改为同义句）His____are workers.6．The boy is Tim.（改为否定句）The boy____Tim.7．Is this your cousin?（改为复数形式）___ ____ your cousins?8．Tom is my friend.（改为一般疑问句）___ ____ your friend?9．This is a key in English.（就画线部分提问）___ ____ in English?10. That is my jacket.（改为否定句）That____my jacket.六、完形填空I'm a boy. My __1__ is Tom Green.__2__ is my last name. What's __3__ in English? It's a pen.It is _4___ pen. It is blue.I like it very much. This is my jacket. It's very big. It is in a size（尺寸）__5__. This is my sister. __6__ name is Linda. She __7__ seven years old.I have（有）a __8__.Thenumber is 654 -3796. There are（有）__9__ people in my family. It's a happy _10___ .My parentslove us. We love them, too.( )1.A. first B.English st( )2.A. Green B.Tom Green C.Tom D.Greens( )3.A.IB. this C.you D.they( )4.A. your B.his C.her D.my( )5.A．S B．N C．L D．M( )6.A. Her B.She C.It's D.His( )7.A. am B.is C.are D.be( )8.A. pen B.ruler C.key D.phone( )9.A. one B.two C.three D.four ( ) 10.A.family B.school C.map D.book七、阅读理解(A)This is a Chinese boy. His name is Ling Feng. He is thirteen. He is in No.5 Middle School. He is in Class One, Grade Two. Ling Feng is in Row Four. He is Number 20. Miss Zhang is his English teacher. He loves her very much.( )1. Ling Feng is a(n)____boy.A.EnglishB.AmericanC.ChineseD.China( )2．He is in____．A.row FourB.row 4C.Four RowD.Row Four( )3．____ is his English teacher.A.Miss ZhangB.Mr. ZhangC.Mrs. ZhangD.Teacher Zhang( )4．He is in____．A.Class1,Grade 2B.class1, grade1C. Class 2,Grade1D.Class 2.Grade 2( )5. He is____years old.A．30B．12C．13D．11(B)Her first name is Alice. Her last name is Jones. Her phone number is five-four-five, five-five-four-one. His first name is Peter. His last name is Green. His phone number is seven-three-two, eight-six-nine-one.根据短文内容，判断下列句子正(T)误(F)。

STARTER UNITS 1－3 学情评估一、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。

年级__________姓名___________成绩___________Unit 1 My name ’s Gina.温故知新(课前预习类训练）Ⅰ.根据图写出本单元的生词。

1. 2. 3. 4. 5.Ⅲ从方框内选正确的单词完成子 1.— your name? —Mary. 2.I ’m Alan.Nice to you. 3.—What ’s his ? —Tony. 4.—What ’s this in English? —It ’s a .(闹钟) 5.Jack Smith ’s()name is Smith. And his _____ name is Jack.一鼓作气（课中强化类训练） ●生词专练Ⅰ 选出下列不同类的一项。

1.A.me B.my C.his D.your 2.A.am B.is C.are D.and 3.A.five B.six C.eight D.number 4.A.look B.meet C.see D.card 5.A.red B.zero C.green D.black Ⅱ.根据句意和提示写出单词 1.L !This is my new jacket.2.Two and three is f .3.This is my new friend(). H name is Eric.4.That is my newEnglishteacher().H name isLinda Brown.5.My name is Jim green.Green is my f name. ●（短语专练）Ⅲ根据句意和提示完成句子。

1.—What ’s (你的名字)？ —My name ’s Gina Brown. 2. (他的姓)is Hand. 3.This is (她的身份证). 4.—Nice to (见到你),Linda. —Nice to meet you ，too.5.(我的名字是)Alan Miller.●（句子结构专练)Ⅳ.连词成句。

Starter Unit1Hello！第1课时(Section A1a-2d)(分层作业)【夯实基础】一、根据音标写出单词和释义。

音标单词中文意思1./'ju:nt/n._____________________2./'sta:ta(r)//'ju:nt/_____________________3./'sekfi/n.______________________4./gri:t/v______________________5./spel/v______________________二、选择合适的字母或字母组合完成单词（）1.g dA.erB.ooC.ou（）2.m ningA.erB.arC.or（）3.gr tA.eeB.eaC.ao（）4.sp llA.iB.eC.o（）5.h loA.eB.leC.el【提升能力】三、单项选择1.---Hi,Dale!---____________!A．I'm Alice B．Hi,FrankC．Morning,Cindy D．Thanks2．早上，老师走进教室时，同学们应对老师说"____________,Mr./Miss…"A．Hi B．How are youC．Good morning D．Good evening3．你早晨遇见了Helen,应该说“________”。

A．Hi,Linda.B．Morning good,Helen!C．Good morning,Helen!D．Linda,good morning.4．---How are you,Alice?---____________.A．Hi B．Hello C．I'm OK D．Good morning 5．—What's his name?—____________.A．It's a pen B．My name is JimC．His name is Jack D．He is fine四、完成句型。

新仁爱版七上Unit 1 Let’s Be Friends! “准备”板块分层作业班级：_________ 姓名：_________ 学号：________基础训练一、根据字母表顺序，写出位于下列字母前后的字母（注意大小写）。

1. ____X____ Y ____Z____2. h ___i____ j ___k_____3. ____V____ W ____X____4. p ____q___ r ____s_____5. _____N___ O ____P___二、选出下列字母的读音含有不同元音因素的一项。

（）1. A. S B. L C. T D. F【答案】C【详解】T发/i:/，其余发/e/。

（）2. A. H B. J C. G D. A【答案】C【详解】G发/i:/，其余发/eɪ/。

（）3. A. M B. z C. n D. i【答案】D【详解】i发/aɪ/，其余发/e/。

（）4. A. o B. e C. p D. c【答案】A【详解】o发/əʊ/，其余发/i:/。

（）5. A. Q B. V C. W D. U【答案】B【详解】V发/i:/，其余发/ju:/。

三、词汇（根据汉语提示或所给词的适当形式填空）。

1.My name is Li Xiang. I like __________ (徒步).2.—What’s your student ID __________ (号码)？—It’s 202474100.3.Hello! I’m Jim. Nice to __________ (遇见) you.4.This is my elder brother. He is __________ (15) years old.5.—__________ (哪个) class are you in? —I’m in Class Five, Grade Seven.6.—Where __________ you from? —I __________ from Beijing. (be)7.Jane and I are in the same class. We are __________ (classmate).8.Li Ming is tall and strong. He enjoys __________ (play) basketball.9.—__________ Jim in class Six? —No, he __________. (be)10.—________________is Vera? —He is 12 years old.【答案】1. hiking (like doing sth.) 2. number 3. meet 4. fifteen 5. Which 6. are; am7.classmates 8. playing (like/love/enjoy+doing sth.) 9. Is; isn’t 10. How old四、单项选择。

七年级上册英语Units1-2 单元测试卷Listening test part（共20分）I.听句子，选择最佳应答语。

(每小题1分，共5分)( )1. A. Yes, I am. B. I’m eight. C. I’m fine, thank you. ( )2.A. Good evening! B. Yes, it’s good. C. It’s in the morning. ( )3. A. I see. B. I’m OK. C. Thanks. You too. ( )4. A. Maria. B. My sister. C. Betty Green.( )5. A. Thank you. B. My name is Luke. C. Nice to meet you, too. Ⅱ.听对话，选择最佳答案。

(每小题1分，共5分)( )6. Linda’s sister’s name is .A. MaryB. JennyC. Jane( )7. Kate can see oranges in the picture.A. sixB. sevenC. eight( )8. Gina’s grandpa is in .A. WenzhouB. YangzhouC. Suzhou( )9.Bill’s cousin’s last name is .A.BlackB. WhiteC.Green( )10.It’s now.A.morningB.afternoonC.eveningⅢ.听长对话，选择最佳答案。

(每小题1分，共5分)听下面一段对话回答第11-12小题. ( )11. Alice can see a in the picture.A.penB.dogC.key ( )12.The man (男人) is Alice’s .A.brotherB.fatherC.grandfather 听下面一段对话，回答第13-15小题。

复习课一(2.1－2.4)例1计算：(1)(－34)－(－12)＋(＋34)＋(＋8.5)－13；(2)0－(－256)＋(－527)－(－216)－－657.反思：进行有理数的加减混合运算往往是把加减法统一成加法，再利用加法的运算律进行简化计算．灵活地运用加法的交换律和结合律是简化的关键，往往把互为相反数的先加，同分母的先加，同号的先加．例2计算：(1)(－3)÷－134×0.75×73÷3；(2)(114－56＋12)×(－12)；(3)(－24)÷－14＋18－12.反思：进行有理数乘除混合运算时往往是把乘除统一成乘法，再利用乘法交换律和结合律进行简化运算，在计算过程中还应注意结果的符号不要搞错．分配律的逆向使用有一定的难度，关键是找准相同的因数才能准确地计算．例3开学时，某校对七年级(1)班的男生进行了单杠引体向上的测验，以能做7次为达标标准，超过的次数用正数表示，不足的次数用负数表示，第一小组8名男生的成绩如下表：2－13－2－31(1)第一小组的达标率是多少？(2)平均每人做了多少个引体向上？反思：用有理数的混合运算解决实际问题时，要分析清楚题意，选择正确的运算．运算过程中能用运算律的要使用运算律来简化计算．1．计算：(－1)÷(－5)×(－15)的结果是()A ．－1B ．1C ．－125D ．－252．据探测，月球表面白天阳光垂直照射的地方温度高达127℃，而夜晚温度可降低到零下183℃.根据以上数据推算，在月球上昼夜温差有()A ．56℃B ．－56℃C ．310℃D ．－310℃3．下列计算：①0－(－5)＝－5；②(－3)＋(－9)＝－12；③23×(－94)＝－32；④(－36)÷(－9)＝－4.其中正确的个数是()A ．1个B ．2个C ．3个D ．4个4．(凉山州中考)若x 是2的相反数，|y|＝3，则x －y 的值是()A ．－5B ．1C ．－1或5D ．1或－5 5．数轴上的点A 和点B 所表示的数互为相反数，且点A 对应的数是－2，P 是到点A或点B 距离为3的数轴上的点，则所有满足条件的点P 所表示的数的和为()A ．0B ．6C ．10D ．166．(1)(____________)÷4＝－312；(2)比6的相反数小4的数是____________；(3)如果一个数除以它的倒数，商是1，那么这个数是____________．7．(1)若a ，b 互为相反数，c ，d 互为倒数，且|c|＝1，则a ＋b c＋c 2－cd ＝____________，12cd－3a－3b＝____________；(2)若三个有理数x，y，z满足xyz>0，则|x|x＋y|y|＋|z|z＝____________；(3)计算：1÷1－12÷1－13÷1－14÷ (1)110＝____________.8．计算：(1)35＋(－13)－1＋25；(2)－54×(－214)÷(－214)×29；(3)(－14＋13－38＋56)÷(－124)；(4)(－4.59)×(－37)＋2.41×37.9．某辆出租车一天下午以公园为出发地在东西方向行驶，向东走为正，向西走为负，行车里程(单位：千米)，依先后次序记录如下：＋9，－3，－5，＋6，－7，＋10，－6，－4，＋4，－3，＋7.(1)将最后一名乘客送到目的地时，出租车离公园多远？在公园的什么方向？(2)若出租车每千米耗油量为0.1升，则这辆出租车这天下午耗油多少升？10．如果表示运算x＋y＋z，表示运算a－b＋c－d，求的值．11．某自行车厂一周计划每日生产400辆自行车，由于人数和操作原因，每日实际生产量分别为405辆、393辆、397辆、410辆、391辆、385辆、405辆．(1)用正、负数表示每日实际生产量与计划量相比的增减情况；(2)该车厂本周实际共生产了多少辆自行车？平均每日实际生产多少辆自行车？参考答案复习课一(2.1—2.4)【例题选讲】例1(1)(－34)－(－12)＋(＋34)＋(＋8.5)－13＝(－34＋34)＋(12＋8.5)－13＝0＋9－13＝823.(2)0－(－256)＋(－527)－(－216)－－657＝256＋216＋(－527－657)＝5＋(－12)＝－7.例2(1)(－3)÷－134×0.75×73÷3＝－3×－47×34×73×13＝3×47×34×73×13＝1；(2)(114－56＋12)×(－12)＝114×(－12)＋(－56)×(－12)＋12×(－12)＝－15＋10＋(－6)＝－11；(3)(－24)÷－14＋18－12＝(－24)÷－58＝(－24)×－85＝1925. 例3(1)根据题意，分析可得，共有8名同学参加了测试，其中有5名学生的测试达标，则其达标率为58×100%＝62.5%.(2)由题意易得，他们做的引体向上的个数一共为2＋(－1)＋0＋3＋(－2)＋(－3)＋1＋0＋7×8＝56(个)，∴平均每人做56÷8＝7(个)．【课后练习】1．C 2.C 3.B4.D5.A 6．(1)－14(2)－10(3)±17．(1)012(2)3或－1(3)10【解析】原式＝1÷12÷23÷34÷…÷910＝1×2×32×43×…×109＝10. 8．(1)－13(2)－12(3)－13(4)39．(1)出租车离公园8千米，在公园的东方；(2)这辆出租车这天下午耗油6.4升．10．(－1－2－3)×(2014－2015＋2016－2017)＝－6×(－2)＝12. 11．(1)以每日生产400辆自行车为标准，多出的数记为正数，不足的数记为负数，则有＋5，－7，－3，＋10，－9，－15，＋5.(2)405＋393＋397＋410＋391＋385＋405＝2786(辆)，2786÷7＝398(辆)，即共生产了2786辆自行车，平均每日实际生产398辆自行车．。

【最新版】人教版七年级上册英语《STARTER UNITS 1－3 》测试卷（含答案）第一部分选择题(共50分)一、阅读理解(共20小题，每小题2分；满分40分)第一节A1. If Kelly is a student in Panjin No. 1 Middle School, she needs to take ________.A. a big schoolbagB. four notebooksC. two new erasersD. three red rulers2. The coloured pencils are for ________.A. English classB. math classC. art classD. science class3. We can know from the text that________.A. the students have breakfast at schoolB. a new head teacher comes to the schoolC. the students can bring mobile phones to schoolD. Mr. Lee is the head teacher of the school4. The text(文本) is ________.A. a storyB. a noticeC. an emailD. an ad(广告)BMy name is Emma Miller. I am from the UK. I'm twelve years old. Welcome to my home. Please look at the closet(衣柜)of my family.This is my dress. It's black. Black is my favourite colour. And that white T-shirt is mine, too. Here is a yellow coat. Whose is it? It's my sister Linda's. She has eight pairs of brown shoes and two pairs of red gloves. Where are they? They are next to the closet. What about these two blue T-shirts? Oh, one is my mom's and the other is my dad's. These two T-shirts look the same, but they are different. My dad's T-shirt is very big, but my mom's is small. They have blue trousers, too.5. How many people does the family have?A. 3.B. 4.C. 5.D. 6.6. What does the underlined(画线的) word “they” refer to(指代)?A. Shoes.B. Gloves.C. T-shirts.D. Shoes and gloves.7. What is not in the closet?A. Linda's brown shoes.B. Linda's yellow coat.C. Emma's dress and T-shirt.D. The parents' blue T-shirts.8. What is the passage(文章) mainly (主要地)about?A. Emma's big house.B. Emma's family members.C. Emma's favourite clothes.D. The closet of Emma's family.CHi, 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 table near the closet. I usually put my bag on the table. A lamp is on the table, too. When I study in the evening, I need the lamp.There is a chair in front of the table. My dog is sleeping on the floor, near the table. 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.9. Where is the bag?A. On the bed.B. Near the bed.C. On the table.D. Near the table.10. The underlined word “lamp” means“______”.A. 台灯B. 手机C. 字典D. 照相机11. What is the structure(结构)of the text?12. What is the main idea(主旨) of the text?A. Lily has a big and nice living 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.DHello, I am Jenny. I'm 13 years old. I live with my parents in a big city. I always study hard on weekdays. My grandparents live on a farm and I often visit them on weekends. On the farm are many kinds of animals: cows, sheep, pigs, dogs and chickens. I like to play with them because it can make me happy.One day, I see a little duck on the farm. He has no family or friends,and he often walks alone (独自). He is cute and I call him Tom. I want totake care of (照顾)him. After that, I often give him some fish to eat andplay with him. Little by little, the duck becomes friendly to me. Then, onSaturday mornings, when Tom sees me on the farm, he always runs up tome like a little dog. Sometimes he walks after me. We sit together and read books. We feel happy.One Saturday evening, my grandfather asks me, “Why does the little duck like you so much？” “Oh, because he can feel my love, Grandpa，” I answer happily.Do you have an animal friend? If (如果) you don't, please try to get one!13. What does Jenny often do on weekends?A. She studies hard.B. She does her homework.C. She sees her grandparents.D. She reads books.14. Why does Jenny like to play with the animals on the farm?A. Because the animals need her help.B. Because she wants to give them good food.C. Because she wants to make friends with Tom.D. Because playing with them makes her happy.15. Before the little duck meets Jenny, he ______.A. often walks with his motherB. sometimes walks after her on the farmC. doesn't have any friends or familyD. often gets good food from her16. Why does Jenny write this passage?A. To tell us about her grandparents' farm.B. To learn more about animals.C. To help people make friends.D. To ask people to love animals.第二节In the English class, Miss Yang asks the students to introduce (介绍) one of their favourite things. Here are some answers from the students.Gina: 17. ______ It's my favourite. It's from my dad. It's a phone, too. I can use it to call my parents and friends.Linda: I like my new schoolbag very much. 18. ______ And it is in my room. It's white, black and red. My uncle buys it for me.Peter: I have a yellow bicycle. It's a birthday gift from my father. I like it very much. 19. ______Frank: What's my favourite thing? Oh, it's a bottle. It's on my desk. There's a picture of a white plane on it. 20. ______ It's from my friend Lucy.二、完形填空(共10小题，每小题1分；满分10分)I have a beautiful house. There are __21__ bedrooms in my house. One is for my parents __22__ the other (另外一个) is for my brother and me. The first bedroom is my __23__. It is big. A bed, a desk and a sofa are __24__ it. They are all __25__，because brown is my parents' favourite __26__. The second bedroom is ours. A __27__ is on the wall. We __28__ happy in the picture. There are two chairs in ourroom. Some __29__ about animals are on them. We both like reading. Oh, __30__is under the chair? It's our cat.21. A. one B. twoC. threeD. four22. A. because B. orC. andD. but23. A. parents' B. friends'C. teacher'sD. uncle's24. A. on B. behindC. underD. in25. A. brown B. yellowC. redD. black26. A. yard B. numberC. colourD. fun27. A. bottle B. keyC. pictureD. carrot28. A. look B. seeC. watchD. need29. A. books B. pensC. rulersD. things30. A. where B. whatC. howD. when第二部分非选择题(共40分)三、语篇填空(共10小题，每小题1分；满分10分)Hello! My name 31. ________(be) Tom. This is my house. Welcome 32. ________ my house. Let me 33. ________(show) you around.This is my 34. ________(brother) room. It is clean and tidy. He 35. ________(keep) everything tidy. Blue is 36. ________(he) favourite colour. So everything in his room is blue. What is that outside the room? Oh, it's 37. ________apple tree and many 38. ________(goose) are around it. Look at 39.________(that) rabbits. They are cute. We have eight rabbits. Five rabbits are white40. ________ three are black.四、阅读与表达(共4小题，41－43小题，每小题2分，44小题4分；满分10分)阅读短文，然后根据内容回答问题。

Starter Unit 1Ⅰ. 根据图片，将所给字母对应的小写字母规范地写在下面的四线三格中。

Ⅱ. 找出与所给单词划线部分发音相同的选项。

( )1. nameA. DaleB. thanksC. hand( )2. eveningA. bedB. heC. Helen( )3. isA. hiB. fineC. AliceⅢ. 找出下列缩略词对应的汉语。

Ⅳ. 将所给字母组合成正确的单词, 并规范地写在下面的四线三格中，将其汉语意思写在括号中。

Ⅴ. 从右栏中找出左栏各句对应的应答语。

答案Starter Unit 1Ⅰ.Ⅱ. 1-3 ABCⅢ. 1-4 CABDⅣ. 1. morning 早晨；上午2. thanks 感谢；谢谢3. am 是4. hello 你好；喂Ⅴ. 1-4 CDABStarter Unit 2Ⅰ. 按照字母表的顺序，在四线三格中规范地写出所缺字母的大小写。

Ⅱ. 将所给图片与其对应的单词连线。

quiltrulerorangeⅢ. 根据汉语提示填入所缺的字母补全单词。

1. j____ ____ ____ ____t (夹克衫) 2. p____ ____ (钢笔) 3. ____ ____ｙ (钥匙) 4. ____u____ (杯子) 5. t____ ____t (那；那个)Ⅳ. 根据对话内容，在空白处填入恰当的单词，使对话完整、通顺。

A: Good afternoon, Dale.B: (1)_______, Alice. How are you?A: Fine, (2)_______. What's this in (3)_______? B: It's a(n) (4)_______.A: (5)_______ it, please.B: O-R-A-N-G-E.答案Starter Unit 2Ⅰ.Ⅱ.Ⅲ. 1. a; c; k; e 2. e; n 3. k; e 4. c; p 5. h; aⅣ. 1. Afternoon 2. thanks 3. English 4. orange 5. SpellStarter Unit 3Ⅰ. 将下列字母按照字母表的顺序排列。

Starter Unit 1 Good morning!第1课时分层训练[1a­2e]Ⅰ.字母检测请写出下列字母的左邻右舍(注意大小写)。

1．________ b________ 2.________ D________ 3.________ c________ 4.________ E________ 5．________ e________ 6.________ G________ Ⅱ.词汇(A)根据句意及汉语提示完成句子。

1．Your English is very ________ (好的)．2．Good ________ (晚上), Dad!3．I'm ________ (健康的), thanks.4．Good ________ (下午), Bob!5．This________ (光盘) is nice.(B)用方框中所给单词的适当形式填空。

morning， hi， OK， thanks 1．—Hello, Tom. —________，Bob. 2．—Good ________，class!—Good morning, Miss Zhang!3．—How are you, Lisa？—I'm fine, ________．4．—How are you？—I'm ________．Ⅰ.单项填空( )1.下列哪组字母是由三笔写出来的？A．AEH B．BDEC．FGH D．ABD( )2.下列字母中含有相同音素的一组是________。

A．abc B．bcd C．efg D．ach( )3.书写下列字母时，占相同格数的一组是________。

A．ace B．bcdC．fgh D．bcf( )4.字母G的正确读音是________。

A．/ɡiː/ B．/dʒiː/C．/dʒeI/ D．/ɡeI/( )5.下午上英语课前，你会和英语老师说“________”A．Good morning, Miss Bai.B．Good afternoon, Miss Bai.C．Good evening, Miss Bai.D．How are you, Miss Bai?( )6.下面哪个是女孩名字？A．Grace B．DaleC．Eric D．Bob( )7.请选出下列英语缩写与意思不相符的一项。

第一讲七年级上 Units1—4(含Starter)Ⅰ.单项填空1.—I think people both from the mainland and Taiwan are of one . —Yes. Blood is thicker than water.A. roomB. familyC. houseD. home2.Several foreign visitors came to our school last week and we gave them a warm at the school gate.A. welcomeB. cardC. habitD. sale3.—Thank you helping me a lot.—You’re welcome.A. withB. forC. atD. of4.[2018合肥包河区一测]I’m afraid there is no enough on the corner to put this big box.A. placeB. roomC. floorD. ground5.I solved the problem successfully the help of my elder brother. I thanked him a lot.A. withB. forC. withoutD. at6.—I am glad that I will go to my uncle’s farm and ride the horse today.—A. Have a good day!B. Come with me.C. Excuse me.D. Good idea!7.[2018合肥包河区二测]—It’s raining again. How can we have our picnic tomorrow?—Don’t worry. It won’t long.A. goB. lastC. rainD. drop8.—There’s someone you， Jack.—Tell him to wait a moment. I’ll be there right away.A. caring forB. asking forC. searching forD. paying for9.[2018芜湖27中二模]—Tom，don’t forget to turn off the lights when you l eave. —A. That’s right.B. It’s nothing.C. OK， I will.D. Got it.10.—Tim，you are so clever to think of this excellent idea.—There is a way to solve the problem as long as you really want to do it.A. seldomB. alwaysC. hardlyD. neverⅡ.完形填空InternationalFriendshipDayisthedayofcelebrationsoffriendship.Itis 1 onthe first Sunday of August every year.The first Sunday of August was recognized(正式承认)asaholidayinhonoroffriendsbytheUSCongress(国会)intheyearof1935.Thegreatideaofhonoringthebeautifulrelationshipbetweenfriends was 2 by many people， and in a short time Friendship Day became a highly 3 festival. Following the popularity and 4 of Friendship Day in the US， several other countries accepted the tradition， and it became a/an 5 Friendship Day.Friendship Day is celebrated by giving friends gifts and cards. It is not just for young people or just in schools or colleges. It is celebrated by people of all age groups. On this day， friends give one another an enjoyable time and 6 their happiness with each other. Some friends celebrate the day by going out for a lunch，while some choose to invite friends to their 7 .Since its origin in 1935， Friendship Day celebrations have come a long way，but the basic 8 behind the day has never changed. People express 9 for theirfriends. Today Friendship Day is being celebrated across different cultures and countries.Let this day be a reason for us to remember or be with people who have helped and 10 us. Having a true friend does help bring happiness to this world.1.A. researched B. mindedC. recordedD. celebrated2.A. ordered B. calledC. foughtD. supported3.A. necessary B. useful C. popular D. rapid4.A. success B. failure C. honor D. attention5.A. international B. nationalC. personalD. traditional6.A. like B. enjoy C. help D. share7.A. families B. spaces C. houses D. rooms8.A. feeling B. expression C. idea D. thought9.A. love B. respect C. sadness D. hate10.A. doubted B. encouragedC. visitedD. knownⅢ.补全对话A: Hello， what are you looking at?B: 1 I am planning to travel， so they sent me these to cheer me up.A: That’s nice. Look， this postcard is from Beijing. 2B: Yeah，I’m sure it is. But Li Wei says it’s tiring to travel around the city. A: 3B: Let me see. That’s from London. Peter went to London last summer and went inside Buckingham Palace， where the Queen of England lives.A: Oh， it would be fantastic.B: And this is a postcard of Bali Island. Paul was there last week. He says it’s very peaceful.A: 4B: Um...this one. It’s from Disneyland. It’s so exciting. I’d really love to go. A: 5 Maybe it could be a graduation present for you next year.AHigh-techmachineshavemadelifeeasierforthemillionsaroundtheworld.However，somepeoplestillpreferlow-techwaysofdoingthings.Here’sanexampleofwhythisishappe ning.Youcanmicrowaveafrozenhamburgerin60seconds.However，itwon’ttasteasgoodastheoneyoucookonthestov e(炉).Andifyou’reinahurry，youprobablywon’thavetimetotoast(烘烤)thebread.High-techcookingsavestime，butitdoesn’tmakebetter-tastingmeals.Mostpeoplegettheirnewsfromhigh-techsources(来源)liketelevisionortheInternet.Thishasmanyadvantages.Forexample，electronicnewsismoreup-to-datethannewspapersormagazines.It’salsomoreexcitingto seeliveandvideotapednewseventsthanphotographs.However，newspapersandmagazineshavesomeimportantadvantages.Theygivemorebackgroundanddeta ils(细节).Theyalsoletyoureadthepartsthatareimportanttoyouandskiptherest.Otherhigh-tec htimesavershavedisadvantages.Forexample，mostpeopleusethephoneoremailtostayintouchwithfriendsandfamilymemberswholiveinot herplaces.ButwhenyouusetheInternetorthephone，youdon’talwaysthinkcarefullyaboutwhatyouaresaying，andsometimesyouforgettheimportantthingsyouwanttocommunicate.Similarly，whenyoudoyourhomeworkonthecomputer，youneedn’tcheckyourspellingbyyourself.However，youaresobusywiththecomputerthatyoudon’tpayenoughattentiontotheactualwordsyouar etyping.1.What advantages of high-tech machines does the writer mention in the text?A. They make more delicious meals.B. They can save time and make life easier.C. They can provide news with detailed information.D. They can make students do their homework carefully.2.How many advantages does the news from high-tech sources have according to the text?A. Two.B. Three.C. Four.D. Five.3.Which of the following is NOT true according to the text?A. We sometimes forget the important things to say when talking on the phone.B. We won’t miss important information while reading newspapers and magazines.C. We can get the latest news from high-tech sources like television or the Internet.D. When we email our friends， we are always careful to choose the right words to say.4.In which section of a magazine may the text appear?A. News.B. Music and art.C. Sports.D. Science and technology.BAnna is a shy person and we have been best friends since we were little. She wanted to make more friends but it was hard for her. I knew she was a kind girl.I always made friends very easily， so I always had her by my side.One day I was out and she had no one to play with until a new kid showed up. His name was Jack and he asked if he could play with her. She said， "I hope you don’t mind playing with someone who is really shy." He said he didn’t mind， because he was the same， and then they played together. That was how they became good friends. When I came back she was very happy and told me what had happened. I was also happy for her.A few days later， I had to leave our town with my family. I was 13 years old at that time. Then Jack moved away，too. We didn’t meet each other again until I came across Anna three years later. She told me that after Jack and I had left，she felt lonely.Now we three are together again. We know that we are best friends and we are there for each other no matter what happens. Anna is active and she has made many friends now. We are never going to be apart.5.What was Anna like three years ago?(不超过5个词)6.How did Anna feel after Jack and the writer left?(不超过10个词)7.Which sentence from the passage can exactly describe Anna now?(不超过10个词)Ⅴ.单词拼写1.[2018宣城二模]People feed on rice in the s (南方).2.[2018芜湖27中二模]In hot weather， we should d (喝)plenty of water.3.[2018芜湖27中二模]My teacher lives on the t (第十二) floor of this building.4.[2018马鞍山]He b (买) his mother flowers every Mother’s Day.5.S (看见) is believing，but sometimes we also need to think about what we have seen.【参考答案】Ⅰ.单项填空1.B 【解析】考查名词词义理解。

人教版数学七年级上册第一章测试题及答案解析（时间：90分钟分值：120分）一、选择题（每小题4分，共32分）1．（4分）杨梅开始采摘啦！每筐杨梅以5千克为基准，超过的千克数记为正数，不足的千克数记为负数，记录如图，则这4筐杨梅的总质量是（）A．19.7千克B．19.9千克C．20.1千克D．20.3千克2．（4分）下列说法正确的有（）①一个数不是正数就是负数；②海拔﹣155m表示比海平面低155m；③负分数不是有理数；④零是最小的数；⑤零是整数，也是正数．A．1个B．2个C．3个D．4个3．（4分）小灵做了以下4道计算题：①﹣6﹣6=0；②﹣3﹣|﹣3|=﹣6；③3÷×2=12；④0﹣（﹣1）2016=﹣1．则她做对的道数是（）A．1 B．2 C．3 D．44．（4分）2013年12月15日，我国“玉兔号”月球车顺利抵达月球表面，月球离地球平均距离是384 400 000米，数据384 400 000用科学记数法表示为（）A．3.844×108B．3.844×107C．3.844×109D．38.44×109 5．（4分）实数a，b，c在数轴上对应的点如图所示，则下列式子中正确的是（）A．ac＞bc B．|a﹣b|=a﹣b C．﹣a＜﹣b＜c D．﹣a﹣c＞﹣b﹣c6．（4分）已知①1﹣22；②|1﹣2|；③（1﹣2）2；④1﹣（﹣2），其中相等的是（）A．②和③B．③和④C．②和④D．①和②7．（4分）若（﹣ab）2017＞0，则下列各式正确的是（）A．＜0 B．＞0 C．a＞0，b＜0 D．a＜0，b＞08．（4分）若|a|=5，|b|=6，且a＞b，则a+b的值为（）A．﹣1或11 B．1或﹣11 C．﹣1或﹣11 D．11二、填空题（每小题4分，共16分）9．（4分）﹣2的相反数是，倒数是，绝对值是．10．（4分）在数轴上，与点﹣3距离4个单位长度的点有个，它们对应的数是．11．（4分）若m、n互为相反数，则|m﹣1+n|=．12．（4分）某品种兔子，一对兔子每个月能繁殖3对小兔子，而每对小兔子，一个月后也能繁殖3对新小兔子，总之，所有的每对兔子，都是每月繁殖3对小兔子，如果开始只有一对兔子，那么半年后有对兔子（不考虑意外死亡）．三、解答题（共52分）13．（12分）计算：（1）（﹣49）﹣（+91）﹣（﹣5）+（﹣9）；（2）﹣17+17÷（﹣1）11﹣52×（﹣0.2）3；（3）﹣5﹣[﹣﹣（1﹣0.2×）÷（﹣2）2]．14．（10分）小明和小红都想参加学校组织的数学兴趣小组，根据学校分配的名额，他们两人只能有1人参加，数学老师想出了一个主题，如图，给他们六张卡片，每张卡片上都有一些数，将化简后的数在数轴上表示出来，再用“＜”连接起来，谁先按照要求做对，谁就参加兴趣小组，你也一起来试一试吧！15．（10分）小明是“环保小卫士”，课后他经常关心环境天气的变化，他了解到本周白天的平均气温，如表（“+”表示比前一天上升了，“﹣”表示比前一天下降了．单位：℃）星期一二三四五六日气温变化+1.1﹣0.3+0.2+0.4+1+1.4﹣0.3已知上周周日平均气温是16.9℃，回答下列问题：（1）这一周哪天的平均气温最高，最高是多少？（2）计算这一周每天的平均气温．16．（10分）观察下列等式：13=12，13+23=32，13+23+33=62，13+23+33+43=102，…，想一想：等式左边各个幂的底数与右边幂的底数有什么关系，并用等式表示出规律；再利用这一规律计算13+23+33+43+…+1003的值．17．（10分）如图，小玉有5张写着不同数字的卡片，请你按要求抽出卡片，完成下列问题：（1）从中抽出2张卡片，使这2张卡片上的数字的乘积最大，则应如何抽取？最大的乘积是多少？（2）从中抽出2张卡片，使这2张卡片上的数字相除的商最小，则应如何抽取？最小的商是多少？（3）从中抽出2张卡片，使这2张卡片上的数字经过加、减、乘、除、乘方中的一种运算后，组成一个最大的数，则应如何抽取？最大的数是多少？（4）从中抽出4张卡片，用学过的运算方法，要使结果为24，则应如何抽取？写出运算式子（一种即可）．参考答案与试题解析一、选择题（每小题4分，共32分）1．（4分）杨梅开始采摘啦！每筐杨梅以5千克为基准，超过的千克数记为正数，不足的千克数记为负数，记录如图，则这4筐杨梅的总质量是（）A．19.7千克B．19.9千克C．20.1千克D．20.3千克【考点】正数和负数．【专题】计算题．【分析】根据有理数的加法，可得答案．【解答】解：（﹣0.1﹣0.3+0.2+0.3）+5×4=20.1（千克），故选：C．【点评】本题考查了正数和负数，有理数的加法运算是解题关键．2．（4分）下列说法正确的有（）①一个数不是正数就是负数；②海拔﹣155m表示比海平面低155m；③负分数不是有理数；④零是最小的数；⑤零是整数，也是正数．A．1个B．2个C．3个D．4个【考点】有理数．【专题】计算题；实数．【分析】利用正数与负数的定义判断即可．【解答】解：①一个数不是正数就是负数或0，错误；②海拔﹣155m表示比海平面低155m，正确；③负分数是有理数，错误；④零不是最小的数，错误；⑤零是整数，不是正数，错误．故选A【点评】此题考查了有理数，熟练掌握各自的定义是解本题的关键．3．（4分）小灵做了以下4道计算题：①﹣6﹣6=0；②﹣3﹣|﹣3|=﹣6；③3÷×2=12；④0﹣（﹣1）2016=﹣1．则她做对的道数是（）A．1 B．2 C．3 D．4【考点】有理数的混合运算．【分析】根据绝对值、有理数的加减法、乘除进行计算即可．【解答】解：①﹣6﹣6=﹣12，故错误；②﹣3﹣|﹣3|=﹣6，故正确；③3÷×2=12，故正确；④0﹣（﹣1）2016=﹣1，故正确；故选C．【点评】本题考查了有理数的混合运算，掌握有理数的加减乘除混合运算是解题的关键．4．（4分）2013年12月15日，我国“玉兔号”月球车顺利抵达月球表面，月球离地球平均距离是384 400 000米，数据384 400 000用科学记数法表示为（）A．3.844×108B．3.844×107C．3.844×109D．38.44×109【考点】科学记数法—表示较大的数．【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的值是易错点，由于384 400 000有9位，所以可以确定n=9﹣1=8．【解答】解：384 400 000=3.844×108．故选：A．【点评】此题考查科学记数法表示较大的数的方法，准确确定a与n值是关键．5．（4分）实数a，b，c在数轴上对应的点如图所示，则下列式子中正确的是（）A．ac＞bc B．|a﹣b|=a﹣b C．﹣a＜﹣b＜c D．﹣a﹣c＞﹣b﹣c【考点】实数与数轴．【专题】数形结合．【分析】先根据各点在数轴上的位置比较出其大小，再对各选项进行分析即可．【解答】解：∵由图可知，a＜b＜0＜c，∴A、ac＜bc，故A选项错误；B、∵a＜b，∴a﹣b＜0，∴|a﹣b|=b﹣a，故B选项错误；C、∵a＜b＜0，∴﹣a＞﹣b，故C选项错误；D、∵﹣a＞﹣b，c＞0，∴﹣a﹣c＞﹣b﹣c，故D选项正确．故选：D．【点评】本题考查的是实数与数轴，熟知数轴上各点与实数是一一对应关系是解答此题的关键．6．（4分）已知①1﹣22；②|1﹣2|；③（1﹣2）2；④1﹣（﹣2），其中相等的是（）A．②和③B．③和④C．②和④D．①和②【考点】有理数的混合运算．【分析】①先算平方，再算减法；②先做绝对值里面的减法运算，再根据绝对值的定义去掉绝对值的符号；③先做括号里面的减法运算，再根据有理数的乘方运算法则计算；④根据减法法则计算．计算出各式的值以后，再比较即可．【解答】解：因为①1﹣22=1﹣4=﹣3；②|1﹣2|=|﹣1|=1；③（1﹣2）2=（﹣1）2=1；④1﹣（﹣2）=1+2=3．所以，相等的是②和③．故选A．【点评】此题主要考查了有理数的混合运算．7．（4分）若（﹣ab）2017＞0，则下列各式正确的是（）A．＜0 B．＞0 C．a＞0，b＜0 D．a＜0，b＞0【考点】有理数的乘方；有理数的除法．【分析】根据乘方法则得的结果．【解答】解：∵（﹣ab）2017＞0，∴﹣ab＞0，∴ab＜0，即ab异号，∴A选项正确，B选项错误；CD错误，故选A．【点评】本题主要考查了乘方运算，注意正数的任何次幂都是正数；负数的奇次幂是负数，负数的偶次幂是正数；0的任何正整数次幂都是0是解答此题的关键．8．（4分）若|a|=5，|b|=6，且a＞b，则a+b的值为（）A．﹣1或11 B．1或﹣11 C．﹣1或﹣11 D．11【考点】绝对值．【分析】根据所给a，b绝对值，可知a=±5，b=±6；又知a＞b，那么应分类讨论两种情况：a为5，b为﹣6；a为﹣5，b为﹣6，求得a+b的值．【解答】解：已知|a|=5，|b|=6，则a=±5，b=±76∵a＞b，∴当a=5，b=﹣6时，a+b=5﹣6=﹣1；当a=﹣5，b=﹣6时，a+b=﹣5﹣6=﹣11．故选C．【点评】本题考查绝对值的化简，正数的绝对值是其本身，负数的绝对值是它的相反数，0的绝对值是0．根据题意确定绝对值符号中数的正负再计算结果．二、填空题（每小题4分，共16分）9．（4分）﹣2的相反数是2，倒数是﹣，绝对值是2．【考点】倒数；相反数；绝对值．【分析】运用倒数，相反数及绝对值的定义求解即可．【解答】解：﹣2的相反数是2，倒数是﹣，绝对值是2．故答案为：2，﹣，2．【点评】本题主要考查了倒数，相反数及绝对值，解题的关键是熟记定义．10．（4分）在数轴上，与点﹣3距离4个单位长度的点有2个，它们对应的数是﹣7和1．【考点】数轴．【专题】计算题；实数．【分析】结合数轴，确定出所求的数即可．【解答】解：在数轴上，与点﹣3距离4个单位长度的点有2个，分别位于﹣3的两侧且到﹣3这一点的距离都是4，右边的数为﹣3+4=1，左边的数为﹣3﹣4=﹣7．故答案为：2；﹣7和1【点评】此题考查了数轴，利用了数形结合的思想，画出相应的数轴是解本题的关键．11．（4分）若m、n互为相反数，则|m﹣1+n|=1．【考点】有理数的加减混合运算；相反数；绝对值．【专题】计算题．【分析】相反数的定义：只有符号不同的两个数互为相反数，0的相反数是0；绝对值规律总结：一个正数的绝对值是它本身；一个负数的绝对值是它的相反数；0的绝对值是0．【解答】解：∵m、n互为相反数，∴m+n=0．∴|m﹣1+n|=|﹣1|=1．故答案为：1．【点评】主要考查相反数，绝对值的概念及性质．12．（4分）某品种兔子，一对兔子每个月能繁殖3对小兔子，而每对小兔子，一个月后也能繁殖3对新小兔子，总之，所有的每对兔子，都是每月繁殖3对小兔子，如果开始只有一对兔子，那么半年后有4096对兔子（不考虑意外死亡）．【考点】有理数的乘方．【分析】结合乘方的定义可知：开始有兔子的对数是1，1个月后有4对兔子，以后每一个月后每一对兔子都变成4对兔子，依此类推，可得6个月后有46对小兔子．【解答】解：由题意得：1个月后有3+1=4对兔子，半年后：46=4 096，故答案为：4 096．【点评】此题主要考查了有数的乘方，关键是正确理解题意，得出一个月后兔子的对数．三、解答题（共52分）13．（12分）计算：（1）（﹣49）﹣（+91）﹣（﹣5）+（﹣9）；（2）﹣17+17÷（﹣1）11﹣52×（﹣0.2）3；（3）﹣5﹣[﹣﹣（1﹣0.2×）÷（﹣2）2]．【考点】有理数的混合运算．【专题】计算题；实数．【分析】（1）原式利用减法法则变形，计算即可得到结果；（2）原式先计算乘方运算，再计算乘除运算，最后算加减运算即可得到结果；（3）原式先计算乘方运算，再计算乘除运算，最后算加减运算即可得到结果．【解答】解：（1）原式=﹣49﹣91+5﹣9=﹣49﹣91﹣9+5=﹣149+5=﹣144；（2）原式=﹣17+17÷（﹣1）﹣25×（﹣）=﹣17+（﹣17）﹣（﹣）=﹣34+=﹣33；（3）原式=﹣5﹣（﹣﹣×）=﹣5﹣（﹣）=﹣5+=﹣4．【点评】此题考查了有理数的混合运算，熟练掌握运算法则是解本题的关键．14．（10分）小明和小红都想参加学校组织的数学兴趣小组，根据学校分配的名额，他们两人只能有1人参加，数学老师想出了一个主题，如图，给他们六张卡片，每张卡片上都有一些数，将化简后的数在数轴上表示出来，再用“＜”连接起来，谁先按照要求做对，谁就参加兴趣小组，你也一起来试一试吧！【考点】有理数大小比较．【专题】图表型．【分析】根据在一个数的前面加上负号就是这个数的相反数，负数的立方是负数，乘积为1的两个数互为倒数，有理数的加法，可化简各数，根据数轴是表示数的一条直线，可把数在数轴上表示出来，根据数轴上的点表示的数右边的总比左的大，可得答案．【解答】解：﹣（﹣2）=2，（﹣1）3=﹣1，﹣|﹣3|=﹣3，0的相反数是0，﹣0.4的倒数是﹣，比﹣1大是，在数轴上表示如图：，由数轴上的点表示的数右边的总比左的大，得﹣3＜﹣＜﹣1＜0＜＜2．【点评】本题考查了有理数比较大小，数轴上的点表示的数右边的总比左的大，注意先把小数化成分数再求倒数．15．（10分）小明是“环保小卫士”，课后他经常关心环境天气的变化，他了解到本周白天的平均气温，如表（“+”表示比前一天上升了，“﹣”表示比前一天下降了．单位：℃）星期一二三四五六日气温变化+1.1﹣0.3+0.2+0.4+1+1.4﹣0.3已知上周周日平均气温是16.9℃，回答下列问题：（1）这一周哪天的平均气温最高，最高是多少？（2）计算这一周每天的平均气温．【考点】正数和负数．【分析】（1）根据正负数的意义可知，周六的平均气温最高；（2）只需依次相加即可分别求出这一周每天的平均气温．【解答】解：（1）周六的平均气温最高，最高是16.9+1.1﹣0.3+0.2+0.4+1+1.4=20.7（℃）；（2）周一：16.9+1.1=18（℃）；周二：18﹣0.3=17.7（℃）；周三：17.7+0.2=17.9（℃）；周四：17.9+0.4=18.3（℃）；周五：18.3+1=19.3（℃）；周六：19.3+1.4=20.7（℃）；周日：20.7﹣0.3=20.4（℃）．【点评】此题考查了正负数的意义和有理数的加减运算，熟练掌握运算法则是解答此题的关键．16．（10分）观察下列等式：13=12，13+23=32，13+23+33=62，13+23+33+43=102，…，想一想：等式左边各个幂的底数与右边幂的底数有什么关系，并用等式表示出规律；再利用这一规律计算13+23+33+43+…+1003的值．【考点】规律型：图形的变化类．【专题】规律型．【分析】通过特例发现：1=1，3=1+2，6=1+2+3，…，即右边的底数正好是左边的所有底数的和．同时1+2+3+…+n=．【解答】解：13+23+…+n3=（1+2+…+n）2，原式=（1+2+3+…+100）2=（50×101）2=25502500．【点评】能够正确发现规律．同时特别注意：1+2+3+…+n=．17．（10分）如图，小玉有5张写着不同数字的卡片，请你按要求抽出卡片，完成下列问题：（1）从中抽出2张卡片，使这2张卡片上的数字的乘积最大，则应如何抽取？最大的乘积是多少？（2）从中抽出2张卡片，使这2张卡片上的数字相除的商最小，则应如何抽取？最小的商是多少？（3）从中抽出2张卡片，使这2张卡片上的数字经过加、减、乘、除、乘方中的一种运算后，组成一个最大的数，则应如何抽取？最大的数是多少？（4）从中抽出4张卡片，用学过的运算方法，要使结果为24，则应如何抽取？写出运算式子（一种即可）．【考点】有理数大小比较．【分析】（1）观察这五个数，要找乘积最大的就要找符号相同且绝对值最大的数，所以选﹣3和﹣5；（2）2张卡片上数字相除的商最小就要找符号不同，且分母越大越好，分子越小越好，所以就要选3和﹣5，且﹣5为分母；（3）这2张卡片上数字组成一个最大的数，除了有个位十位相组成之外，还有乘方，比如（﹣5）4=625；（4）从中取出4张卡片，用学过的运算方法，使结果为24，这就不唯一，用加减乘除只要答数是24即可，比如﹣3、﹣5、0、3，四个数，{0﹣[（﹣3）+（﹣5）]}×3=24．【解答】解：（1）抽取﹣3，﹣5，最大的乘积是15．（2）抽取﹣5，+3，最小的商是﹣．（3）抽取﹣5，+4，最大的数为（﹣5）4=625．（4）（答案不唯一）如抽取﹣3，﹣5，0，+3，运算式子为{0﹣[（﹣3）+（﹣5）]}×（+3）=24．【点评】此题实际上是有理数的混合运算的逆运算，先给你数，让你列混合运算的式子，所以学生平时要培养自己的逆向思维能力．人教版数学七年级上册第二章测试题及答案解析（时间：90分钟分值：120分）一、选择题（每小题3分，共30分）1．（3分）在代数式：，3m﹣3，﹣22，﹣，2πb2中，单项式的个数有（）A．1个B．2个C．3个D．4个2．（3分）下列语句正确的是（）A．2x2﹣2x+3中一次项系数为﹣2 B．3m2﹣是二次二项式C．x2﹣2x﹣34是四次三项式D．3x3﹣2x2+1是五次三项式3．（3分）下列各组中的两项，属于同类项的是（）A．﹣2x2y与xy2B．5x2y与﹣0.5x2zC．3mn与﹣4nm D．﹣0.5ab与abc4．（3分）单项式﹣的系数与次数分别是（）A．﹣2，6 B．2，7 C．﹣，6 D．﹣，75．（3分）下列合并同类项正确的是（）A．3a+2b=5ab B．7m﹣7m=0C．3ab+3ab=6a2b2D．﹣a2b+2a2b=ab6．（3分）﹣[a﹣（b﹣c）]去括号应得（）A．﹣a+b﹣c B．﹣a﹣b+c C．﹣a﹣b﹣c D．﹣a+b+c7．（3分）一个长方形的一边长是2a+3b，另一边的长是a+b，则这个长方形的周长是（）A．12a+16b B．6a+8b C．3a+8b D．6a+4b8．（3分）化简（x﹣2）﹣（2﹣x）+（x+2）的结果等于（）A．3x﹣6 B．x﹣2 C．3x﹣2 D．x﹣39．（3分）已知代数式x2+3x+5的值为7，那么代数式3x2+9x﹣2的值是（）A．0 B．2 C．4 D．610．（3分）下列判断：（1）不是单项式；（2）是多项式；（3）0不是单项式；（4）是整式，其中正确的有（）A．1个B．2个C．3个D．4个二、填空（每小题3分，共24分）11．（3分）﹣5πab2的系数是．12．（3分）多项式x2﹣2x+3是次项式．13．（3分）一个多项式加上﹣x2+x﹣2得x2﹣1，则此多项式应为．14．（3分）如果﹣x m y与2x2y n+1是同类项，则m=，n=．15．（3分）已知a是正数，则3|a|﹣7a=．16．（3分）张大伯从报社以每份0.4元的价格购进了a份报纸，以每份0.5元的价格售出了b份报纸，剩余的以每份0.2元的价格退回报社，则张大伯卖报收入元．17．（3分）当x=﹣1时，代数式x2﹣4x﹣k的值为0，则当x=3时，这个代数式的值是．18．（3分）观察下面的单项式：x，﹣2x2，4x3，﹣8x4…根据你发现的规律，写出第6个式子是，第n个式子是．三、解答题（共46分）19．（20分）化简（1）﹣5+（x2+3x）﹣（﹣9+6x2）；（2）（5a﹣3a2+1）﹣（4a3﹣3a2）；（3）﹣3（2x﹣y）﹣2（4x+y）+2009；（4）﹣[2m﹣3（m﹣n+1）﹣2]﹣1．20．（12分）先化简，再求值．①2x2﹣[x2﹣2（x2﹣3x﹣1）﹣3（x2﹣1﹣2x）]，其中②2（ab2﹣2a2b）﹣3（ab2﹣a2b）+（2ab2﹣2a2b），其中a=2，b=1．21．（7分）某同学做一道数学题：已知两个多项式A、B，计算2A+B，他误将“2A+B”看成“A+2B”，求得的结果是9x2﹣2x+7，已知B=x2+3x﹣2，求2A+B的正确答案．22．（7分）如图所示，是两种长方形铝合金窗框已知窗框的长都是y米，窗框宽都是x米，若一用户需（1）型的窗框2个，（2）型的窗框5个，则共需铝合金多少米？附加题.23．阅读下列解题过程，然后答题：已知如果两个数互为相反数，则这两个数的和为0，例如，若x和y互为相反数，则必有x+y=0．（1）已知：|a|+a=0，求a的取值范围．（2）已知：|a﹣1|+（a﹣1）=0，求a的取值范围．参考答案与试题解析一、选择题（每小题3分，共30分）1．（3分）在代数式：，3m﹣3，﹣22，﹣，2πb2中，单项式的个数有（）A．1个B．2个C．3个D．4个【考点】单项式．【分析】根据单项式的定义进行解答即可．【解答】解：：﹣22，﹣，2πb2中是单项式；是分式；3m﹣3是多项式．故选C．【点评】本题考查的是单项式，熟知数或字母的积组成的式子叫做单项式，单独的一个数或字母也是单项式是解答此题的关键．2．（3分）下列语句正确的是（）A．2x2﹣2x+3中一次项系数为﹣2 B．3m2﹣是二次二项式C．x2﹣2x﹣34是四次三项式D．3x3﹣2x2+1是五次三项式【考点】多项式．【分析】多项式中每个单项式叫做多项式的项，这些单项式中的最高次数，就是这个多项式的次数，根据这个定义即可判定．【解答】解：A、2x2﹣2x+3中一次项系数为﹣2，正确；B、分母中含有字母，不符合多项式的定义，错误；C、x2﹣2x﹣34是二次三项式，错误；D、3x3﹣2x2+1是三次三项式，错误．故选A．【点评】本题考查了同学们对多项式的项的系数和次数定义的掌握情况．在处理此类题目时，经常用到以下知识：（1）单项式中的数字因数叫做这个单项式的系数；（2）一个单项式中，所有字母的指数和叫做这个单项式的次数；（3）几个单项式的和叫多项式；（4）多项式中的每个单项式叫做多项式的项；（5）多项式中不含字母的项叫常数项；（6）多项式里次数最高项的次数，叫做这个多项式的次数．3．（3分）下列各组中的两项，属于同类项的是（）A．﹣2x2y与xy2B．5x2y与﹣0.5x2zC．3mn与﹣4nm D．﹣0.5ab与abc【考点】同类项．【分析】根据同类项的定义（所含字母相同，并且相同字母的指数也分别相等的项，叫同类项）判断即可．【解答】解：A、不是同类项，故本选项错误；B、不是同类项，故本选项错误；C、是同类项，故本选项正确；D、不是同类项，故本选项错误；故选C．【点评】本题考查了对同类项的定义的应用，注意：同类项是指：所含字母相同，并且相同字母的指数也分别相等的项．4．（3分）单项式﹣的系数与次数分别是（）A．﹣2，6 B．2，7 C．﹣，6 D．﹣，7【考点】单项式．【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．【解答】解：根据单项式系数、次数的定义，单项式﹣的系数与次数分别是﹣，7．故选D．【点评】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．5．（3分）下列合并同类项正确的是（）A．3a+2b=5ab B．7m﹣7m=0C．3ab+3ab=6a2b2D．﹣a2b+2a2b=ab【考点】合并同类项．【分析】根据同类项的定义及合并同类项的法则进行逐一计算即可．【解答】解：A、不是同类项，不能合并；B、正确；C、3ab+3ab=6ab；D、﹣a2b+2a2b=a2b．故选B．【点评】本题考查的知识点为：同类项的定义：所含字母相同，相同字母的指数相同．合并同类项的方法：字母和字母的指数不变，只把系数相加减．不是同类项的一定不能合并．6．（3分）﹣[a﹣（b﹣c）]去括号应得（）A．﹣a+b﹣c B．﹣a﹣b+c C．﹣a﹣b﹣c D．﹣a+b+c【考点】去括号与添括号．【分析】先去小括号，再去中括号，即可得出答案．【解答】解：﹣[a﹣（b﹣c）]=﹣[a﹣b+c]=﹣a+b﹣c．故选A．【点评】本题考查了去括号法则的应用，注意：括号前面是“+”，把括号和它前面的“+”去掉，括号内的各项的符号都不变，括号前面是“﹣”，把括号和它前面的“﹣”去掉，括号内的各项的符号都改变．7．（3分）一个长方形的一边长是2a+3b，另一边的长是a+b，则这个长方形的周长是（）A．12a+16b B．6a+8b C．3a+8b D．6a+4b【考点】整式的加减．【分析】长方形的周长等于四边之和，由此可得出答案．【解答】解：周长=2（2a+3b+a+b）=6a+8b．故选B．【点评】本题考查有理数的加减运算，比较简单，注意长方形的周长可表示为2（长加宽）．8．（3分）化简（x﹣2）﹣（2﹣x）+（x+2）的结果等于（）A．3x﹣6 B．x﹣2 C．3x﹣2 D．x﹣3【考点】整式的加减．【分析】先去括号，再合并同类项．【解答】解：原式=x﹣2﹣2+x+x+2=3x﹣2．故选C．【点评】本题考查了整式加减常用的方法：去括号，合并同类项，比较简单，需要熟练掌握．9．（3分）已知代数式x2+3x+5的值为7，那么代数式3x2+9x﹣2的值是（）A．0 B．2 C．4 D．6【考点】代数式求值．【专题】整体思想．【分析】观察题中的两个代数式x2+3x+5和3x2+9x﹣2，可以发现，3x2+9x=3（x2+3x），因此可整体求出x2+3x的值，然后整体代入即可求出所求的结果．【解答】解：∵x2+3x+5的值为7，∴x2+3x=2，代入3x2+9x﹣2，得3（x2+3x）﹣2=3×2﹣2=4．故选C．【点评】代数式中的字母表示的数没有明确告知，而是隐含在题设中，首先应从题设中获取代数式x2+3x的值，然后利用“整体代入法”求代数式的值．10．（3分）下列判断：（1）不是单项式；（2）是多项式；（3）0不是单项式；（4）是整式，其中正确的有（）A．1个B．2个C．3个D．4个【考点】多项式；整式；单项式．【分析】根据单项式、多项式及整式的定义，结合所给式子即可得出答案．【解答】解：（1）是单项式，故（1）错误；（2）是多项式，故（2）正确；（3）0是单项式，故（3）错误；（4）不是整式，故（4）错误；综上可得只有（2）正确．故选A．【点评】此题考查了单项式、多项式及整式的定义，注意单独的一个数字也是单项式，另外要区别整式及分式．二、填空（每小题3分，共24分）11．（3分）﹣5πab2的系数是﹣5π．【考点】单项式．【分析】根据单项式系数的定义来选择，单项式中数字因数叫做单项式的系数．【解答】解：根据单项式系数的定义，单项式﹣5πab2的系数是﹣5π．【点评】本题考查单项式的系数，根据单项式系数的定义来选择，单项式中数字因数叫做单项式的系数．注意π是一个具体的数字，应作为数字因数．12．（3分）多项式x2﹣2x+3是二次三项式．【考点】多项式．【分析】根据多项式的概念求解．【解答】解：多项式x2﹣2x+3是二次三项式．故答案为：二，三．【点评】本题考查了多项式的知识，每个单项式叫做多项式的项，多项式中次数最高的项的次数叫做多项式的次数．13．（3分）一个多项式加上﹣x2+x﹣2得x2﹣1，则此多项式应为2x2﹣x+1．【考点】整式的加减．【分析】因为一个多项式加上﹣x2+x﹣2得x2﹣1，所以所求多项式为x2﹣1﹣（﹣x2+x﹣2），然后去括号、合并同类项便可得到这个多项式的值．【解答】解：由题意可得：x2﹣1﹣（﹣x2+x﹣2）=x2﹣1+x2﹣x+2=2x2﹣x+1．故答案为：2x2﹣x+1．【点评】整式的加减运算实际上就是去括号、合并同类项，这是各地中考的常考点．合并同类项时，注意是系数相加减，字母与字母的指数不变．去括号时，括号前面是“﹣”号，去掉括号和“﹣”号，括号里的各项都要改变符号．14．（3分）如果﹣x m y与2x2y n+1是同类项，则m=2，n=0．【考点】同类项．【分析】本题考查同类项的定义，所含字母相同且相同字母的指数也相同的项是同类项，根据同类项的定义中相同字母的指数也相同，可求得m和n的值．【解答】解：由同类项的定义可知m=2，n=0．【点评】同类项定义中的两个“相同”：（1）所含字母相同；（2）相同字母的指数相同，是易混点，因此成了中考的常考点．15．（3分）已知a是正数，则3|a|﹣7a=﹣4a．【考点】绝对值．【专题】计算题．【分析】根据绝对值的性质，正数和0的绝对值是它本身，再根据合并同类项得出结果．【解答】解：由题意知，a＞0，则|a|=a，∴3|a|﹣7a=3a﹣7a=﹣4a，故答案为﹣4a．【点评】本题考查了绝对值的性质，正数和0的绝对值是它本身，比较简单．16．（3分）张大伯从报社以每份0.4元的价格购进了a份报纸，以每份0.5元的价格售出了b份报纸，剩余的以每份0.2元的价格退回报社，则张大伯卖报收入（0.3b﹣0.2a）元．【考点】列代数式．【专题】压轴题．【分析】注意利用：卖报收入=总收入﹣总成本．【解答】解：依题意得，张大伯卖报收入为：0.5b+0.2（a﹣b）﹣0.4a=0.3b﹣0.2a．【点评】解决问题的关键是读懂题意，找到关键描述语，进而找到所求的量的等量关系．17．（3分）当x=﹣1时，代数式x2﹣4x﹣k的值为0，则当x=3时，这个代数式的值是﹣8．【考点】代数式求值．【专题】计算题．【分析】首先根据当x=﹣1时，代数式x2﹣4x﹣k的值为0，求出k的值是多少；然后把x=3代入这个代数式即可．【解答】解：∵当x=﹣1时，代数式x2﹣4x﹣k的值为0，∴（﹣1）2﹣4×（﹣1）﹣k=0，解得k=5，∴当x=3时，x2﹣4x﹣5=32﹣4×3﹣5=9﹣12﹣5=﹣8故答案为：﹣8．【点评】此题主要考查了代数式求值问题，要熟练掌握，求代数式的值可以直接代入、计算．如果给出的代数式可以化简，要先化简再求值．题型简单总结以下三种：①已知条件不化简，所给代数式化简；②已知条件化简，所给代数式不化简；③已知条件和所给代数式都要化简．18．（3分）观察下面的单项式：x，﹣2x2，4x3，﹣8x4…根据你发现的规律，写出第6个式子是﹣32x6，第n个式子是（﹣1）n+12n﹣1x n．【考点】单项式．【分析】根据观察，可发现规律：n个式子是系数是（﹣1）n+12n﹣1，字母部分是x n，可得答案．【解答】解：单项式：x，﹣2x2，4x3，﹣8x4…，得n个式子是系数是（﹣1）n+12n﹣1，字母部分是x n，第6个式子是﹣32x6，第n个式子是（﹣1）n+12n﹣1x n，故答案为：﹣32x6，（﹣1）n+12n﹣1x n．【点评】本题考查了单项式，观察发现规律：n个式子是系数是（﹣1）n+12n﹣1，字母部分是x n是解题关键．三、解答题（共46分）19．（20分）化简（1）﹣5+（x2+3x）﹣（﹣9+6x2）；（2）（5a﹣3a2+1）﹣（4a3﹣3a2）；（3）﹣3（2x﹣y）﹣2（4x+y）+2009；（4）﹣[2m﹣3（m﹣n+1）﹣2]﹣1．【考点】整式的加减．【分析】（1）去括号后合并即可；（2）去括号后合并同类项即可；（3）去括号后合并同类项即可；（4）去括号后合并同类项即可．【解答】解：（1）原式=﹣5+x2+3x+9﹣6x2=﹣5x2+3x+4；（2）原式=5a﹣3a2+1﹣4a3+3a2=﹣4a3+5a+1；（3）原式=﹣6x+3y﹣8x﹣y+2009=﹣14x+2y+2009（4）原式=﹣（2m﹣3m+3n﹣3﹣2）﹣1=﹣（﹣m+3n﹣5）﹣1=m﹣3n+4．【点评】本题主要考查整式的加减，熟练掌握去括号法则和合并同类项法则是解题的关键．20．（12分）先化简，再求值．①2x2﹣[x2﹣2（x2﹣3x﹣1）﹣3（x2﹣1﹣2x）]，其中②2（ab2﹣2a2b）﹣3（ab2﹣a2b）+（2ab2﹣2a2b），其中a=2，b=1．【考点】整式的加减—化简求值．【专题】计算题．【分析】原式各项去括号合并得到最简结果，将字母的值代入计算即可求出值．【解答】解：①原式=2x2﹣x2+2x2﹣6x﹣2﹣3x2+3+6x=6x2﹣12x﹣5，当x=时，原式=﹣6﹣5=﹣；②原式=2ab2﹣4a2﹣3ab2+3a2b+2ab2﹣2a2b=ab2﹣3a2b，当a=2，b=1时，原式=2﹣12=﹣10．【点评】此题考查了整式的加减﹣化简求值，熟练掌握运算法则是解本题的关键．21．（7分）某同学做一道数学题：已知两个多项式A、B，计算2A+B，他误将“2A+B”看成“A+2B”，求得的结果是9x2﹣2x+7，已知B=x2+3x﹣2，求2A+B的正确答案．【考点】整式的加减．【分析】根据题意得：A=（9x2﹣2x+7）﹣2（x2+3x﹣2），求出A的值，代入后求出即可．【解答】解：∵A=（9x2﹣2x+7）﹣2（x2+3x﹣2）=9x2﹣2x+7﹣2x2﹣6x+4=7x2﹣8x+11，∴2A+B=2（7x2﹣8x+11）+（x2+3x﹣2）=14x2﹣16x+22+x2+3x﹣2=15x2﹣13x+20．【点评】本题考查了整式的加减的应用，关键是求出A的值．22．（7分）如图所示，是两种长方形铝合金窗框已知窗框的长都是y米，窗框宽都是x米，若一用户需（1）型的窗框2个，（2）型的窗框5个，则共需铝合金多少米？。

七年级数学上册第一章第一阶段检测试题及答案七年级数学上册第一章第一阶段检测试题及答案一、双基回顾1、正数、负数及0的意义由于生产和生活的需要产生了数正数、负数和0.(1)大于的数叫做正数，正数前面的+号通常省略不写.(2)在正数前面加上的数叫做负数.(3)0既不是，也不是 ;0除表示没有外，还可表示，如海平面的海拔高度为0.注意：正数和负数都是由符号和绝对值组成的.〔1〕已知数-7，2.1，0，-1/3，13中，正数有;负数有;不是负数的数是 ;不是正数的数是 .注意：不是负数的数叫非负数;不是正数的数叫非正数.2、用正负数表示具有相反意义的量正负数用来表示具有相反意义的量，如+2元表示股票上升2元，-3元表示 .在一个数的前面加上-号，所得的数表示的意义与原数表示的意义 .〔2〕下列说法中错误的是 .①零上6℃的相反意义只有零下6℃;②收入和支出是一对相反意义的量;③运出5吨与收入5元是一对具有相反意义的量.相反意义的量包含两个要素：一是它们的意义，二是它们都具有，而且必须是 .〔3〕如果零上5℃记作+5℃，那么零下5℃记作( )A、-5B、-10C、-10℃D、-5℃3、有理数及其相关概念(1) 统称为整数;(2) 统称为分数;(3) 统称为有理数.注意：有限小数和无限循环小数都可以化为分数.4、有理数的分类(1)按定义分： (2)按性质分：注意：分类要按同一个标准，做到不重复不遗漏.二、例题导引例1 下列语句：①所有整数都是正数;②所有正数都是整数;③小学学过的数都是正数;④分数是有理数;⑤在有理数中除了负数就是正数.其中正确的语句的个数是( )A、0个B、1个C、3个D、4个例2 把下列各数填入相应的大括号中：7，-9.25，-9/10，-301，4/27,-3.5,0,2,11/2,-7,1.25,-7/3,-3,-3/4.正数{ ｝负数{ ｝负整数{ ｝正分数{｝非负整数{ ｝非正分数{ ｝例3 某校对七年级男生进行俯卧撑测试，有8名男生的成绩如下表所示：学生编号 1 2 3 4 5 6 7 8成绩(个) 7 8 5 2 3 7 4 6请规定一个有意义的量为正，并用正、负数重新列表表示这8名同学的成绩.三、练习提高夯实基础1、若存款为正，某储蓄所在1小时内接待了4笔业务：存款2000元，取款1200元，存款400元，取款800元，用正数、负数分别表示为2、下列说法：①零的意义仅仅是表示没有;②0是最小的正整数;③0既不是正数，也不是负数;④0是偶数，也是自然数.其中正确的是( )A、①③④B、①②③④C、③④D、②④3、下列各组量中，具有相反意义的量是( )A、起重机上升5米与右移3米B、向前走与向后走C、收入玉米40公斤与借走玉米40公斤D、存入3万元与取出2万元4、如果节约16度电记作+16，那么浪费6度电记作度.5、钟表上的指针顺时针旋转30度记作+30度,则-20度表示的意义是6、如果水位下降3米记作-3米，那么水位上升4米记作( )A、1米B、7米C、+4米D、-7米7、如果-4米表示物体向西运行4米，那么+2米表示，物体原地不动记为.8、既是负数,又是整数的数是( )A、0分B、1分C、-2分D、3.5分9、下列说法中错误的是( )A、正整数一定是自然数B、自然数一定是正整数C、0既是整数，也是有理数D、有限小数也是分数10、某食品包装上标有净含量3855克，这袋食品的合格率含量范围是克至克.11、向西走-100米,可以说成( )A、向西走100米B、向东走100米C、向西走200米D、向东走200米12、-7所在的数集有 (写出三个数集的名称).13、按某种规律在横线上填上适当的数：-23，-18，-13， .14、把下列各数填到相应的大括号内：-4，5，，- ,0,-21 , ,-0.03003.负整数{ ｝分数{｝非负数{ ｝非正分数{ ｝15、学校对初一男生进行立定跳远测试，以能跳1.7m及以上为达标，超过1.7m的厘米数用正数表示，不足l.7m的厘米数用负数表示.第一组10名男生成绩如下(单位cm)：+2 -4 0 +5 +8 -7 0 +2 +10 -3(1)跳得最远的距离和最近的距离分别是多少?(2)第一组有几名学生达标?达标率是多少?能力提高16、一潜水艇所在高度是-80米，它下潜10米的高度记为 .17、小明比小刚的身高高-5㎝的意义是 .18、下列说法中正确的是( )A、有最小的自然数，也有最小的整数B、没有最小的正数，但有最小的正整数C、没有最小的负数，但有最大的负数D、0是有理数中最小的数.19、有公共部分的两个数集是( )A、正整数集合与负整数集合B、整数集合与分数集合C、负数集合与整数集合D、负分数集合与正分数集合20、某班数学平均分为80分,80分以上如85分记作+5分,某同学的'数学成绩为78分,应记作( )A、+2分B、-7分C、-2分D、+7分21、巴黎与北京的时差为-7时(正数表示同一时刻比北京时间早的小时数)如果北京时间是7月2日14：00，那么巴黎的时间是( )A、7月2日21时B、7月2日17时C、7月2日5时D、7月2日7时22、按某种规律在横线上填上适当的数：1，-4，9，-16，25，23、将下列有理数填在对应的圈中：-0.3，0，-100，3.7，99.9，-15/2，10，，2/3.24、如果课桌的高度比标准高度高2㎜记作+2㎜，那么比标准高度低3㎜记作什么?现有5张课桌，量得它们的尺寸与标准高度比较分别是+1㎜，-1㎝，0㎜，+3㎜和-1.5㎜，若规定课桌的高度比标准的高度最高不能超过2㎜，最低不能低于2㎜才算合格，那么上述5张课桌有几张合格?探索创新25、某种商品的标准价格是400元，但随着季节的变化，商品的价格可浮动5%.(1)5%的含义分别是什么?(2)请你算出商品的最高价和最低价;(3)某商家将该商品的零售价格定在450元，受到物价部门的处罚，请分析处罚原因.。

Units 1-2 调研卷2023-2024学年人教版七年级英语上册（无答案）2023-2024学年第一学期七年级英语Unit1- 2 调研(时间:75分钟满分:90分）一、语法选择（本大题共10小题，每小题1分，共10分）My name is Emily Cooper. Emily is my first name 1 Cooper is my last name. I'm 13. I'm 2 American girl. I'm a student of Groton School. Look! Here 3 a nice photo of my family. In it, you can 4 six people. These are my grandparents. They're in the middle 5 us. Next to my grandpa is my father. 6 name is Roy Cooper. He wears glasses. 7 is my mother Romee Cooper. She likes blue so she wears a blue jacket. But I don't like the 8 . The boy is my cousin Tim. He is my Uncle Leo's son. Tim's parents are not in this photo. They are in China. 9 is the girl It's me. Oh, can you see that little dog in the photo He's fluffy(毛茸茸的). He's very cute. I 10 a big and nice family. I like my family!( )1. A. or B. so C. and( )2. A. a B. an C. the( )3. A. is B. am C. are( )4. A. see B. sees C. seeing( )5. A. to B. at C. of( )6. A. He B. His C. He's( )7. A. Those B. This C. These( )8. A. color B. color's C. colors( )9. A. What B. How C. Who( )10. A. having B. has C. have二、完形填空（本大题共10小题，每小题1分，共10分）Hello, boys and girls! I'm a 13-year-old 11 . My name is Nick Jones. Nick is my 12 name, and Jones is my family name. I am a 13 in No.9 Middle School now. This is my ID card. My ID card 14 is 0935. Every day I take it to the 15 . I like purple. Look! My bag and my jacket are 16 .At school, I have two good 17 . They are Carl and Bruce. We three often play together. Carl is a nice boy and he is 18 to us. Bruce is very 19 , too. He 20 “Hello! Nice to see you!” every morning when I see him. I'm very happy to have my two friends.( )11. A. teacher B. dog C. girl D. boy( )12. A. last B. first C. full D. middle( )13. A. student B. teacher C. worker D. family( )14. A. color B. phone C. number D. name( )15. A. office B. school C. park D. cinema( )16. A. red B. white C. yellow D. purple( )17. A. friends B. cousins C. pilots D. parents( )18. A. fine B. brown C. good D. bad( )19. A. sad B. green C. nice D. blue( )20. A. sees B. meets C. spells D. says三、阅读理解（本大题共15小题，每小题2分，共30分）ALi Xiaoyu is 12 years old.He meets four English friends at the English Club(俱乐部).Name: Alan Smith (10 years old) Family: parents Telephone number: 338-2430 Name: Mary White (9 years old) Family: parents and two brothers Telephone number: 667-3408Name: Eric Green (12 years old) Family: parents and a sister Telephone number: 374-7096 Name: Jenny Brown (11 years old) Family: grandparents,parents and a sister Telephone number: 475-4906( )21. How old is AlanA.9 years old.B.10 years old.C.11 years old.D.12 years old.( )22. What is Mary's last nameA.Smith.B.Green.C.White.D.Brown.( )23. Which is Eric's family photo( )24. What is Jenny's telephone numberA.475-4906.B.338-2430.C.667-3408.D.374-7096.( )25. What can we know from the passageA.Alan is Mary's brother.B.Jenny is in a family of six people.C.Mary and Li Xiaoyu are 12.D.Li Xiaoyu is in an English school.BEveryone has a family name. In English-speaking countries, the family name is the last name. Do you know how English people get their family names And what do they mean？English people usually get their family names in these ways(方式).Some family names come from the places of their homes. If a man lives on or near a hill, his family name may be Hill. In England, people's family names may be Woods or Lake, because they live near the woods or the lake.Some family names come from a person's job. If a person is a cook and works in a restaurant, his family name may be Cook.And many people get their family names from their fathers' family names. If you hear the name “Jackson”, you can know that he may be the son of Jack. People often use their favorite ways to get a name. That will make them happy to have a name.( )26. What may a man's family name be if he lives near the lakeA. Hill.B. Woods.C. Lake.D. Cook.( )27. What may a man's family name be if he works in the restaurant？A.Cook.B. Smith.C. Fisher.D. Baker.( )28. Who may a man be if his family name is JacksonA. Jack's father.B. Jack's best friend.C. The grandfather of Jack.D. The son of Jack.( )29. How many ways do English people usually use to get their family namesA. Two.B. Three.C. Four.D. Five.( )30. What is the passage mainly about？A. Family names in English-speaking countries.B. English people in English-speaking countries.C. Hills and lakes in English-speaking countries.D. Jobs in English-speaking countries.C配对阅读。

英语七年级上冀教版单元测试Unit1、2练习(含答案) 一. 单项选择（10分）( ) 1. —May I get eraser, Mum?—Yes, you may.A. aB. anC. theD. /( ) 2. I can wear my favourite scarf that blue skirt.A. withB. inC. atD. of( ) 3. —My jacket is blue.—My jacket is , too.A. yellowB. pinkC. greenD. blue( ) 4. —Hey, Mary! What is your brother’s ?—Oh, it’s Tom.A. schoolB. numberC. nameD. colour( ) 5. The boy the cowboy hat is Alex. He is Canada.A. in; fromB. of; inC. for; forD. from; from( ) 6. It’s today. I need these gloves.A. warmB. fineC. coldD. beautiful( ) 7. —is that man in the black shirt?— He is my teacher Mr. Wang.A. WhereB. WhoC. WhatD. What about( ) 8. The blouse is just for me. I will take it.A. bigB. longC. smallD. right( ) 9. — Is that your dress, Wang Wei?—No, it isn’t. dress is over there.A. MineB. MyC. MeD. I( )10. —You look very nice in your Sari.—A. Not at all (不用谢).B. I am fine.C. Thank you.D. You’re welcome.二. 完形填空（10分）Hello! I’m Andy. I have a friend. 11name is Paul. Let me 12you something (某事) about him.He is a 13boy. He has short hair and two small eyes. 14is his favourtie colour. He is always 15black. He likes to wear jackets 16pants.He can 17English well and he likes to 18English books. After school, he often helps me with my English. He likes 19and we often play football on the playground. We have fun there. I hope(希望) we can be 20 friends forever (永远).( ) 11. A. My B. HisC. YourD. Her( ) 12. A. hear B. tellC. askD. know( ) 13. A. high B. longC. newD. tall( ) 14. A. Red B. WhiteC. BlackD. Yellow( ) 15. A. in B. aboutC. fromD. for( ) 16. A. because B. soC. andD. but( ) 17. A. listen B. speakC. sayD. talk( ) 18. A. read B. lookC. watchD. see( ) 19. A. trees B. coloursC. sportsD. songs( ) 20. A. favourite B. rightC. wellD. good三. 阅读理解（20分）ALet’s have a look at some students’ clothes in Class Five today.根据表格内容，选择最佳答案。

人教新目标英语七年级上册U n i t1-U n i t2单元测试题(含答案)本页仅作为文档页封面，使用时可以删除This document is for reference only-rar21year.March人教新目标英语七年级上册Unit 1---Unit 2测试题姓名：班级：家长签字：得分：听力部分（共三大题30分）一、听句子，选择恰当的应答语。

（10分）（）1．A．Yes, she is. B．Yes, he is. C．Yes, they are.（）2．A．It’s a pencil case. B．It’s blue pencil case. C．It’s red.（）3．A．Yes, P—H—O—T—O. B．Sorry, I know.C．P—H—O—T—O.（）4．A．Yes, they are. B．Yes, we are. C．Yes, she is.（）5．A．Yes, I am. B．Yes, I do. C．Yes, I have.二、听对话及问题，选择最佳答语。

（10分）（）6．A．It is a book. B．It is a photo of Jim’s family.C．It is a family. D．It is a map.（）7．A．He is a teacher. B．He is a worker.C．He is a driver. D．He is my father.（）8． are in No. 3 Middle School. are sisters.are Mary’s cou sins. are brothers.（）9．A．Lucy. B．Lucy’s.C．Lucy’s friend.D．Lucy’s brother.（）10．A．Fine. B. He is a good man.C．By bike. man is my brother.三、听短文，在横线上填写相应的称呼或名字。

2024-2025学年人教版英语七年级上册Starter Unit 1 -3 检测题Student ID Name Score一、选出划线部分发音不同的一项( )1.A. bed B. pen C. he D. hen( )2.A．big B．pig C.sleep D．fish( )3.A. cup B. but C. bus D. cute( )4.A. these B. bee C. eraser D. see( )5.A. look B.took C.book D.too( )6.A. school B.too C.zoo D.book( )7.A.sit B.it C.bike D.his( )8.A.box B.not C.no D.hot( )9.A.dog B.open C.go D.OK( )10.A.his B.kite C.nice D.fine二.把下列单词按查字典的顺序排列,写在横线上。

busy、what、beautiful、happy、paper、church、catch、leave、relax、stupid三、根据汉语提示完成题目。

1. This is a new about animals.（单元。

）2. The girl is very kind. She always ________ (打招呼) others with a big smile.3. We should our teachers politely.（问候）4. Reading is great ________ for me. (乐趣)5. We should help .（互相）6. in our class likes sports.（每个人）7. Let's our class.（开始）8. We can start a by saying “Hello”.（对话。

）9. Can you “apple”?（拼写）10.The rang and we went into the classroom.（铃声）四、根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。