2022年初二数学上册期末考试试题及答案2.docx

《2022年初二数学上册期末考试试题及答案2.docx》由会员分享，可在线阅读，更多相关《2022年初二数学上册期末考试试题及答案2.docx（19页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、数学部分一、挑选题 每道题有且只有一个答案正确，每道题4分，共 40分 1、如图，两直线 a b，与 1相等的角的个数为 1A 、1个B 、2个C、3个D、4个x3ab19 / 122、不等式组x4的解集是 A 、 3x4B、 x3D、无解3、假如 ab，那么以下各式中正确选项abA 、 a3b3B、bD、2a3 的解集是；12、已知点 A 在第四象限，且到x轴， y轴的距离分别为 3，5，就 A 点的坐标为；13、为了明白某校初三年级400名同学的体重情形，从中抽查了50名同学的体重进行统计分析，在这个问题中，总体是指；14、某班一次体育测试中得100分的有 4人， 90分的有 11人， 8

2、0分的有 11人， 70分的有 8人， 60分的有 5人，剩下的 8人一共得了 300分，就中位数是；15、如图，已知 B= DEF ， AB=DE ，请添加一个条件使ABC DEF ，就需添加的条件是；16、如图， AD 和BC 相交于点 O，OA=OD ， OB=OC ，如 B=40 , AOB=110 ，就 D=度；17、弹簧的长度 ycm 与所挂物体的质量 x kg 的关系是一次函数，图象如右图所示，就弹簧不挂物体时的长度是 cm；ABADOBECFCDy2112520x第15题图第 16题图第 17题图18、如下图所示，图中是一个立体图形的三视图，请你依据视图，说出立体图形的名称：

3、主视图左视图俯视图对应的立体图形是 的三视图；三、解答题 共78分x+119、8分解不等式2x11 ，并把解集在数轴上表示出来；20、8分填空 补全以下证明及括号内的推理依据： 如图：已知： AD BC 于D， EF BC 于F， 1= 3， 求证： AD 平分 BAC ；证明： AD BC ，EFBC 于F已知 AD EF 1= E 2=3EA321BFDC又 3= 1已知 1= 2等量代换 AD 平分 BAC 21、画出下图的三视图 9分22、9分已知点 A10 ， 0， B10 ， 8， C5 ， 0，D0 ， 8，E0 ， 0，请在下面的平面直角坐标系中， 1分别描出 A 、B、C、D

4、、E五个点，并顺次连接这五个点，观看图形像什么字母；(2) 要图象 “高矮 ”不变， “胖瘦 ”变为原先图形的一半，坐标值应发生怎样的变化？S千 M23、10分如图， l A ， l B分别表示 A 步行与 B骑车在同一路上行驶的路程S与时间 t的关系；1B 动身时与 A 相距千M；(2) 走了一段路后，自行车发生故障，进行修理，所用的时间是 小时；(3) B 动身后小时与 A 相遇；22107.5O 0.51.53t时(4) 如B的自行车不发生故障，保持动身时的速度前进，几小时与A 相遇，相遇点离 B的动身点多少千 M；在图中表示出这个相遇点 C，并写出过程；24、10分 已知：如图， Rt

5、ABC Rt ADE ， ABC= ADE=90 ，试以图中标有字母的点为端点，连结两条线段，假如你所连结的两条线段满意相等、垂直或平行关系中的一种，那么请你把它写出来并说明理由；ADBFCE25、10分 某工厂有甲、乙两条生产线，在乙生产线投产前，甲生产线已生产了200吨成品，从乙生产线投产开头， 甲、乙两条生产线每天生产20吨和 30吨成品；(1) 分别求出甲、乙两条生产线投产后，各自的总产量y 吨与从乙开头投产以后所用时间x天 之间的函数关系式，并求出第几天终止时，甲、乙两条生产线的总产量相同；(2) 在如下列图的直角坐标系中，作出上述两个函数和第一象限内的图象，并观看图象，分别指出第1

6、5天和第 25天终止时，哪条生产线的总产量高？26、 14分 1 为爱护环境，某校环保小组成员小敏收集废电池，第一天收集1号电池 4 节、 5 号电池 5节，总重量 460克；其次天收集 1号电池 2节、 5号电池 3节，总重量 240克；求 1号和 5号电池每节分别重多少克？学校环保小组为估算四月份收集废电池的总重量，他们随便抽取了该月腜5天每天收集废电池的数量，如下表： 1号废电池 单位：节 29303228315号废电池 单位：节 5153474950分别运算两种电池的样本平均数，并由此估算该月30天 环保小组收集废电池的总重量是多少千克？2如图，用正方体石墩垒石梯，下图分别表示垒到一、

7、二、三阶梯时的情形，那么照这样垒下去， 填出下表中未填的两空，观看规律；阶梯级数一级二级三级四级石墩块数39 垒到第 n级阶梯时，共用正方体石墩 块用含 n的代数式表示 ；英语部分 .单项挑选（ 15 分） 21.Hewhen the UFO arrived.A. was sleepingB. were sleepingC. has sleptD. is asleep 22.I have been skatingnine o clock.A. forB. sinceC. atD. from 23.Would you mindthose old jeans.A. don t wearB. not

8、 to wearC. aren t wearingD. not wearing 24.- He s never been to an aquarium.-.A. Neither have I B. Neither do IC. I never tooD. I don t too 25.It s really cold today,.A. does itB. doesnCt.itisn t itD. is it 26.have you been swimming. For five years.A. How many times B. How longC. How oftenD. How muc

9、h 27.-Could you pleasein the room.- Oh, I m sorry.A. not smokingB. not smokeC. not to smokeD. don t smoke 28.-Could we buy a piano, Jack.- I m afraid thereenough room for one in the house.A. aren tB. areC. isn tD. is 29.I got homethey were having dinner.A. as soon asB. whileC. becauseD. after 30. We

10、 got madthe team for losing the match.A. atB. inC. onD. about 31.Shea lot of money on clothes.A. takesB. costsC. spendsD. buys 32.I will stay at home and read books if ittomorrow.A. is rainingB. rainsC. rainD. will rain 33.The teacher encourages her studentsEnglish as much as possible.A. to speakB.

11、speakingC. speakD. spoke 34.His fatherto Nanjing. Heback next week.has been, isB has been, will beC. has gone, isD. has gone, will be 35.The teacher said that theyhard-working students.A. isB. areC. wereD. was .用所给词语的适当形式完成以下句子；（5 分） look throughdiscovercollectget overkeep down 36.Do you know whoAme

12、rica.37. He is in his bedroom andthe newspapers for a job.38. He is angry with me now. But he will understand me andit soon. 39.Her brother likes stamps and heover a hundred stamps now. 40.We shouldour voice in public places. .补全对话（ 10 分） A A: What are you doing, Jenny.B: 41.I m cleaning the house.

13、A: Do you often do it.B: Sometimes when I m free. 42. A: Here it is. What will you do after you finishing the cleaning.B: 43. A: 44.Let s go swimming, shall we. B: Sounds great.A. Nothing much.B. In this way you can finish the work sooner.C. What bad weather.D. Can t you see.E. Can you see the book.

14、 F. It will be a pity to stay at home in such fine weather.G. Could you please pass me the towel.A: Let me help you then. 45. B: Thank you.41.42.43.44.45. B 用适当的词语补全下面对话；A: Hello. May I 46.Mr Brown.B: Sorry, he isnHt ein4. 7. to France. A: Well, then do you know 48.B: He said he would return in a mo

15、nth.A: Oh, such a long time. 49.can I get in touch with him. B: You may 50.A: What s his telephone nu mber.B: It s 00334760488532. .句子翻译；（ 10 分）51. 他们举办这场音乐会是为了给慈善事业筹集钱款； They held the concert tothe charity.52. 他的父母特别兴奋他们的儿子在学习上取得了很大的进步；His parents are very happy that their sonin his study.53. 消防队员很

16、快把火扑灭了；The firefightersthe fire soon.54. 你什么时候开头对集邮感爱好了？When did you begin tocollecting stamps.55. 假如你插队的话，其他人会不兴奋的；Other people won t be happy.56. 我们班级三分之二的同学来自于南方； .57. 你们不应当违反学校规定； .58. 他们俩当时都没有在家； .59. 你听说过这样一个人吗？60. 你介意把电视声音调低吗？ . .完形填空（ 10 分）Coke 可乐 is one of 61drinks in the world. A lot of pe

17、ople enjoy62it. But now people begin to believe that it not a good drink for health. There is lots of63in the coke. Having much sugar is 64for people. And it also hassomecaffeine 咖啡因 in it. Thecaffeine can get peopleinto the habit 习惯 of drinkingmore cokewhenthey feel65 . If they don t drink coke the

18、y66bad. And67thing is some people can t work or study68drinki several cups of coke every day. More and more people want to cut down the coke they drink and ask69helpfrom the doctors. If you like drinking coke very much, I think you must have the Coke Habit. In fact drinking more fruit and vegetable

19、juice is 70_for you. 61.A. more popular B. most popularC. popularD. the most popular 62.A. drinkB. drinkingC. to drinkD. drinks 63.A. saltB. pepperC. sugarD. juice 64.A. goodB. wellC. tiredD. bad 65.A. hungryB. fineC. thirstyD. excited 66.A. will feelB. are feelingC. feltD. feel 67.A. badB. worseC.

20、the worstD. the worse 68.A. notB. withoutC. withD. after 69.A. toB. forC. onD. at 70.A. goodB. wellC. bestD. better .阅读懂得（ 20 分）(A) 阅读短文 , 然后依据短文内容挑选正确答案；Passage 1Birds live in trees. Squirrels（松鼠） live in trees. But did you know that some frogs（蛙） live in trees, too.The tree frog is hard to find. I

21、t can change colors. On green leaves, it stays green. On a brown branch（树枝） , it turns brown. Some tree frogs can change from green to gold or blue.Tree frogs have legs and wide feet. They have sticky pads（粘性的肉趾） at the ends of their toes. These sticky toe pads keepthe tree frogs from falling. Treef

22、rogs have different colors and markings（斑点） on their skins. Their eyes are different, too. Some have green eyes, and others have bright red ones.The sound they make are different, too. One frog makes a sound like a dog barking. Another frog makes a loud noise like a snore（打鼾） . There is even a frog

23、that whistles（吹口哨） . 71.These frogs are hard to find because.A. they stay in treesB. they can change their colorsC. they have sticky padsD. they make surprising sounds 72.If the season is spring, the colors of tree frogs is.A. goldB. brownC. greenD. blue 73.The tree frogs can stay on trees because.A

24、. they have sticky padsB. they can change their colorsC. they are strongD. they are small 74.Which of the following sentences is right.A. The tree frogs have different colors and feathers（羽毛） on their skins.B. The tree frogs can t make a loud noise like a snore.C. We can easily tell tree leaves from

25、 tree frogs.D. We may find tree frogs if we hear a sound like a snore in the forest. 75.The passage is mainly about.A. the colors of a special frogB. the sound of a special frogC. the eyes of a special frogD. a frog that is specialPassage 2Most of the flowers in nature are red, orange and yellow. If

26、we have seen a black flower, it s chance in million.People have made a survey of colors of more than four thousand kinds of flowers and found that only eight of them are black.As we know,sunlightis formed形成 by sevendifferentcoloredlights.The wavelength波长 of eachlightisdifferent, so the quantity 量 of

27、 heat in each light is also different. Flowers especially their petal 花瓣 , are easy to be harmed 损害 by high temperature.Black flowers can take in all the light waves which cause the flowers to dry up in a high temperature. So blackflowers can rarely 很少 survive 挺过 sunlight. But red flowers, orange fl

28、owers and yellow flowers can protect 爱护 themselves from sunlight by reflecting 反射 the red light, orange light and yellow light, each of which has alarge quantity of heat. 76.People cansee black flowers.A. oftenB. neverC. hardly everD. always 77.The underlined word“ them ” in the second paragraph ref

29、ers t指o .A. a thousandB. colorsC. flowersD. kinds 78.The passage mainly tells us that.A. black flowers are too weak and it is difficult for them to grow upB. there are only eight black flowers in natureC. sunlight has seven different colored lights and the wave length of each is differentD. why it s

30、 difficult for black flowers to grow 79.How do red flowers, orange flowers or yellow flowers protect themselves from sunlight.A. By taking in the light.B. By reflecting the light.C. By hiding themselves.D. By sleeping. 80.Which of the following ideas is NOT right.A. The black flowers cannot protect

31、themselves from the sunlight.B. Red, orange and yellow flowers can also take in the light of all wave lengths.C. People have found that only a few kinds of flowers are black.D. Flowers are easy to be harmed by very high temperature.(B) 阅读短文，然后依据短文内容填写表格或回答疑题；Passage 3People live around the world. Th

32、ey like to have celebrations 庆祝活动 . In China, people celebrate New Year. New Year is in January or February. They wear red clothes because red is the color that will bring joy. Chinese childrenget money in red envelopes for the new year. In Gambia 冈比亚 , people celebrate Independence Day 独立日 . It is

33、in February. They wear bright clothes and play music at the celebration. In England, people celebrate May Day.May Day is in May. They wear pretty clothes to celebrate the coming spring. The children like to dance on this day.In America, people celebrate Thanksgiving Day 感恩节 . It s in November. They

34、have a very bigdinner with their families or friends. They eat turkeys and a lot of other delicious food. They have a long talk after dinner.Celebrations Around the World61. CelebrationsMonthsClothesChinaNew YearJanuary or February62. Gambia63.Februarybright clothes64.May DayMaypretty clothesAmerica

35、Thanksgiving Day65. Passage 4Are you interested in Helmut Newton and John Pilger. Do you want to learn more about their painting. Come to Barbican Gallery 画廊 .Barbican GalleryOpenMon, Thu- Sat10am- 6 pm Helmut Newton ；Tue, Wed, Sun10am- 9pm John Pilger TicketsAdults 成人 ￥ 7Students, young people 12-1

36、7, over 60s￥5 Disabled people with companion￥ 3.5Under 12 freeBarbican Card discount 折扣 20% off full price ticketsGroup BookingsCan be made through the Groups line 7382 7211 Adult groups of 10 or more￥ 6 eachSchool and full time student groups of 10 or more￥ 2 each.86. When may you go to Barbican Ga

37、llery to see the paintings on Tuesday. .87. Does a child under twelve need to pay any money to see the paintings. .88. Whose paintings can you see if you go to the gallery on Saturday. .89. What telephone number can you call if you want to book tickets. .90. How much should you pay if you want to bu

38、y tickets for group of ten students. .数学部分一、挑选题 每道题有且只有一个答案正确，每道题4分，共 40分 1、C； 2、A ； 3、D； 4、A ； 5、B； 6、 B； 7、D ； 8、C； 9、 A ； 10、C； 二、填空题 每道题 4分，共 32分 11、 x2 ； 12、 5,3 ； 13、某校初三年级 400名同学体重情形的全体；14、80分15、BC=EF 答案不唯独 ； 16、30； 17、9； 18、四棱锥或五面体； 三、解答题 共78分x+119、解：2x11 012x+12x12 2分x12x22 1分x1 1分x12分 数轴表示

39、正确 2分；20、证明： AD BC ， EF BC 于F已知 AD EF 同位角相等，两直线公平或在同一平面内，垂直于同一条干线的两条直线平行 1= E两条直线平行，同位角相等 2=3 两条直线平行，内错角相等又 3= 1已知 1= 2等量代换 AD 平分 BAC 角平分线的定义每空 2分，共 8分；21、图形如下，每个3分，共 9分；主视图左视图俯视图22、图形略， 3分(1) 像字母 M ； 2分(2) 横坐标变为原先的一半，纵坐标不变；4分A 23、110； 21； 33；每题 1分4 解：表示出相遇点C得1分；求出 l A的函数关系式：S=4t+10 分DB求出 l B解得 t=的函数关系： S=15t 分FCE10 分11S= 150 1分1124、解：有不同的情形，图形画正确，并且结论也正确的即可给2分；(1) 连结 CD 、EB ，就有 CD EB；(2) 连结AF 、BD ，就有 AF BD ；(3) 连结BD 、EC，就有 BD EC； 选1 ；证明： Rt ABC Rt ADE 已知 AC AE ， AD AB 全等三角形对应边相等 CAB EAB 全等三角形对应角相等分CABBAD=EADBAD即：CAD=EAB 2分在 ADC 和 ABE 中：AC=AE DCAD=. EABAD=AB ADC ABESAS