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1、八年级上册数学一次函数测试题及答案优秀名师资料(完整版)资料(可以直接使用,可编辑 优秀版资料,欢迎下载)八年级上册数学一次函数测试题及答案一次函数 测试题 一、填空 1、已知一个正比例函数的图象经过点(-2,4),则这个正比例函数的表达式是 。 m+22、若函数y= -2x是正比例函数,则m的值是 。 3、已知一次函数y=kx+5的图象经过点(-1,2),则k= 。 4、已知y与x成正比例,且当x,1时,y,2,则当x=3时,y=_ 。 5、点P(a,b)在第二象限,则直线y=ax+b不经过第 象限。 6、已知一次函数y=kx-k+4的图象与y轴的交点坐标是(0,-2),那么这个一次函数的表
2、达式是_。 17、已知点A(-,a), B(3,b)在函数y=-3x+4的象上,则a与b的大小关系是2_ 。 8、地面气温是20?,如果每升高100m,气温下降6?,则气温t(?)与高度h(m)的函数关系式是_。 9、一次函数y=kx+b与y=2x+1平行,且经过点(-3,4),则表达式为: 。 10、写出同时具备下列两个条件的一次函数表达式(写出一个即可) 。 (1)y随着x的增大而减小, (2)图象经过点(1,-3)。 二、选择题 1-111、下列函数(1)y=x (2)y=2x-1 (3)y= (4)y=2-3x 中,是一次xy 函数的有( ) (A)4个 (B)3个 (C)2个 (D)
3、1个 1 12、下面哪个点不在函数的图像上( ) y,2x,3O 2 x (A)(-5,13) (B)(0.5,2) (C)(3,0) (D)(1,1) 13、直线y=kx+b在坐标系中的位置如图,则( ) (第13题图) 1 1111(A) (B) (C) (D) kb,1kb,1kb,1kb,1222214、下列一次函数中,随着增大而减小而的是 ( ) (A) (B) (C) (D) y,3xy,3x,2y,3,2xy,3x,215、已知一次函数y=kx+b的图象如图所示,则k,b的符号是( ) (A) k0,b0 (B) k0,b0 (C) k0 (D) k0,b0 (第15题图) 16
4、、函数y=(m+1)x-(4m-3)的图象在第一、二、四象限,那么m的取值范围是( ) 33m,1mm,1m,1(A) (B) (C) (D) 4417、一支蜡烛长20厘米,点燃后每小时燃烧5厘米,燃烧时剩下的高度h (厘米)与燃烧时间t (时)的函数关系的图象是( ) (A) (B) (C) (D) 18、下图中表示一次函数y,mx+n与正比例函数y,m nx(m ,n是常数,且mn0)图像的是( )( 2 三、计算题 19、已知一个正比例函数和一个一次函数的图象相交于点A(1,4),且一次函数的图象与x轴交于点B(3,0) (1)求这两个函数的解析式; (2)画出它们的图象; 20、已知y
5、 -2与x成正比,且当x=1时,y= -6 (1)求y与x之间的函数关系式 (2)若点(a,2)在这个函数图象上,求a的值 121、已知一次函数y=kx+b的图象经过点(-1, -5),且与正比例函数y= x的2图象相交于点(2,a),求 (1)a的值 (2)k,b的值 (3)这两个函数图象与x轴所围成的三角形的面积。 22、某市自来水公司为限制单位用水,每月只给某单位计划内用水3000吨,计划内用水每吨收费1.8元,超计划部分每吨按2.0元收费。 (1)写出该单位水费y(元)与每月用水量x(吨)之间的函数关系式:_ ?当用水量小于等于3000吨 ;?当用水量大于3000吨 。 3 (2)某月
6、该单位用水3200吨,水费是 元;若用水2800吨,水费 元。 (3)若某月该单位缴纳水费9400元,则该单位用水多少吨, 23、已知函数y=(2m+1)x+m -3 (1)若函数图象经过原点,求m的值 (2)若这个函数是一次函数,且y随着x的增大而减小,求m的取值范围。 24、如图是某市出租车单程收费y (元)与行驶路程x (千米)之间的函数关系图象,根据图象回答下列问题: (1)当行使路程为8千米时,收费应为 元; (2)从图象上你能获得哪些信息?(请写出2条) ? 这2页空白没用的,请掠过阅读吧哈,这2页空白没用的,请掠过阅读吧哈, 这3页空白没用的,请掠过阅读吧,哈哈哈这3页空白没用的
7、,请掠过阅读吧,哈哈哈 4 这2页空白没用的,请掠过阅读吧哈,这2页空白没用的,请掠过阅读吧哈, 这3页空白没用的,请掠过阅读吧,哈哈哈这3页空白没用的,请掠过阅读吧,哈哈哈 5 这1页空白没用的,请掠过阅读吧哈这1页空白没用的,请掠过阅读吧哈 等弧:在同圆或等圆中,能够互相重合的弧叫做等弧。这1页空白没用的,请掠过阅读吧,这1页空白没用的,请掠过阅读吧, 如果一条直线具备下列三个条件中的任意两个,就可推出第三个.6 (3)三角形的外心的性质:三角形外心到三顶点的距离相等.? (3)求出收费y (元)与行使路程x (千米) (x?3)之间的函数关系式。 7 6.方向角:指北或指南方向线与目标方
8、向线所成的小于90的水平角,叫做方向角。如图4,OA、OB、OC、OD的方向角分别是;北偏东30,南偏东45(东南方向)、南偏西为60,北偏西60。答 案 一、填空 1、y=-2x 2、-1 3、3 4、6 5、三 6、y=6x-2 7、a,b 8、t=-0.06h+20 9、y=2x+10 10、y=-3x或y=-2x-1等。 二、选择题 (1)三边之间的关系:a2+b2=c2;11、B 12、C 13、B 14、D 15、D 16、C 17、D 18、C 三、计算题 2)略 19(1)y=4x,y=x+3,(圆心角:顶点在圆心的角叫做圆心角.20(1)y=-8x+2 (2)a=0,21(1
9、)a=1 (2)k=2,b=-3 (3)3/4 同心圆:圆心相同,半径不等的两个圆叫做同心圆。22(1)?y=1.8x ?y=2x-600 (2)5800,5040(3) 5000 =0 抛物线与x轴有1个交点;23(1)m=3 (2)m,-1/2 面对新的社会要求,教师与学生应首先走了社会的前边,因此我们应该以新课标要求为指挥棒,采用所有可行的措施,尽量体现以人为本,培养学生创新,开放的思维方式。另一方面注意处理好内容与思想的衔接,内容要在学生上学期的水平之上发展并为以后学习打下基础,思想上注意新思维与我国传统的教学思想结合24(1) 11 (2) ?出租车的起步价是5元 ?出租车起步价的路
10、程范围是3公里之内(包括3公里) (3)y=1.2x+1.4(x?3) 25(1) 8,32 (2)57 (3) y=-x+57(x?25) (4) 30 8 仁爱湘教版初中英语八年级上册期中测试题(一)2021年秋季龙船初中八年级英语期中测试题 听力部分(20分) I. 听句子,选出你所听到的单词或短语。二遍(5分) ( )1. A. once B. three times C. four times ( )2. A. Thursday B. Friday C. Saturday ( )3. A. have a good time B. have a good rest C. have th
11、e flu ( )4. A. eight B. seven C. six ( )5. A. clean B. healthy C. fresh II.听对话,选择正确的答案。二遍(5分) ( )1. A. playing football B. playing volleyball C. playing tennis ( )2. A. Lin Tao B. Linda C. Lily ( )3. A. Yes, he does. B. A doctor C. A dentist ( )4. A. We must not go to crowded places. B. We must eat
12、healthy food and do more exercise. C. A and B. ( )5. A. Its good. B. Its bad. C. Yes, it is. ?。把短文补充完整。三遍(5分)。 James Naismith was Canadian. He invented basketball in (1). At that time , He was a (2)teacher at Springfield college in the (3)Do you know how to (4) in the game? Well , just put the ball
13、into the other sides . (5) IV.听短文,根据短文内空容,填入所缺的单词。三遍(5分) As we know, food gives us ? . We must have ? food to keep us ? . Of course, we must also have the right kinds of food. We should eat more fruit and vegetables but ? meat. If we eat too little or too much food, or if we ? the wrong food, it can
14、 make us sick. 1( 2. 3. 4. 5. 笔试部分(80分) I. 用适当的词填空。(首字母已经给出,每空一词)(5分) 1.If you play against No.1 School, we will go and C_ you on? 2.You may get a headache when you exercise O_an empty stomach. 3.Kangkangs father is a doctor. He is very busy right now. He is e_ the patients. 4.-Would you m_ lending
15、your dictionary tome? -Not at all. Here you are. 5.When SARS spread in Beijing, many doctors and nurses left their families and took an active part in the b_ Against it. II. 用所给词的适当形式填空。(5分) 1.Ann goes _ (cycle) once a week. 2.Maria, you look _ (tiring). Whats wrong?. 3.Han Mei plays table tennis _
16、(two) a week. 4.You should drink plenty of _ (boil) water. 5.It will be _ (sun) in Beijing this weekend. III. 选择填空。(15分) ( )1.How often do you go hiking? -_. A .Twice a week B. Once C. Three times ( )2.Maria read a lot of stories and _ herself at home. A .enjoyed B. enjoys C. enjoy ( )3. Running is
17、a good way to _ fit. A. help B. keep C. give ( )4. Hello, boys! Youd better have a rest and relax _. A. yourself B. yourselves C. ourselves ( )5. -Would you mind _ me English? Of course not. A .to teach B. teaching C. teach )6. Must we keep the windows open all the time? ( -No, we _. A. dont have to
18、 B. mustnt C. must not )7. We must not go to _ places during the SARS time. ( A. crowd B. crowded C. crowding ( )8.We will _ the school sports meeting next time. A. join B. take part in D. joins ( )9.Eating more meat but fewer fruits and vegetables is _. A. healthy B. health C. unhealthy ( )10.We do
19、nt have to be afraid of _ SARS. A. catch B. to catch C. catching ( )11. Germs are very small. They can _the human body_ the skin. A.get upacross B. get intothrough C. get out offrom ( )12. James is _ boy. A.a 18-month-old B. a 18 months old C. an 18-month-old ( )13.We shall meet _ the school gate. A
20、. in B. through C. at ( )14. You kept me _so long. A. waiting B. to wait C. am waiting ( )15. I think I _ free next week. A. am B. will be C. will have IV. 句型转换。根据要求改写句子。(10分) 1. My favorite player is Liu Xiang. (对划线部分提问) _ _ your favorite player? 2.I have a toothache.(对划线部分提问) _ _ with you ? 3.They
21、 will leave for Beijing tomorrow.(改为一般疑问句) _ _ leave for Beijing tomorrow? 4.You must take care of yourself.(改为同意句) You must_ _ yourself. 5.He taught himself on the Internet.(改为否定句) He _ _himself on the Internet. V. 汉英释义。(10分)( ) 1. 咳嗽 A.cough ( ) 2. 流行的 B.play baseball ( ) 3. 发烧 C.cold ( ) 4. 感冒 D.
22、 ski ( ) 5. 不但而且 E.buid up ( ) 6. 增强体质 F.fever ( ) 7. 滑雪 G.play volleyball ( ) 8. 打棒球 H.say sorry to sb ( ) 9. 打排球 I.popular ( ) 10. 向某人道歉 J.not only .but also VI. 阅读,选择正确答案。( 10分) The students were having their chemistry(化学)class. Miss Li was telling the children what water(水) was like. After that,
23、 she asked her students, “Whats water?” No one spoke for a few minutes. Miss Li asked again, “Why dont you answer my question? Didnt I tell you what water is like?” Just then a boy put up his hand and said, “Miss Li, you told us that water has no color and no smell. But where to find such kind of wa
24、ter? The water in the river behind my house is always black(黑色) and it has a bad smell.” Most of the children agreed with him. “Im sorry, children.” said the teacher, “Our water is getting dirtier and dirtier. Thats a problem.” ( ) 1. The students were having their _class . A. Chinese B. maths C. Ch
25、emistry D. English ( ) 2. Miss Li was telling the children what _was like. A. water B. weather C. earth D. air ( ) 3. A boy said ,“The water in the river behind my house is always_.” A. clear B. black C. clean D. white ( ) 4. Most of the children _the boy . A. agreed with B. heard from C. wrote to D
26、. sent for ( ) 5. The water in the river has color and smell because it is getting_. A . cleaner and cleaner B. less and less C. more and more D. dirtier and dirtier VII. 完形填空。( 10分) Two friends 1 a bear (熊)。when they went through a forest 2 . One of them ran to 3 tree and climbed up very quickly. H
27、e forgot his friend. He thought only of 4 . His friend 5 bears 6 dead(死的) men. 7 he 8 when the bear came to him. Then the bear went away . The man called his friend in the tree, “you can 9 now.” The man smiled and asked, “What did the bear say to you?” His friend answered, “ He said I needed a new 1
28、0 .” ( ) 1.A. looked for B. met C. looked at D. watched ( ) 2. A. by bus B. by bike C. on foot D. by car ( ) 3. A. the nearest B. the goodC. a tallerD. a biggest ( ) 4. A. himself B. his mother C. the bear D. his girl friend ( ) 5. A. knew B. thought C. saw D. watched ( ) 6. A. wasnt like B. neednt
29、fine C. didnt eat D. couldnt touch ( ) 7. A. And B. So C. But D. Because ( ) 8. A .moved B. ran C. opened his eyes D. didnt move ( ) 9. A. climb upB. get upC. stay thereD. come down ( )10. A .teacher B. dress C. house D. friend VIII. 书面表达。(5分) 根据图示和对话内容,在对话的空白处填上正确选项,使对话意义完整。 Kangkang: Michael. What
30、s the _(1)? Michael: I have a _(2)and I feel so painful. Kangkang: You should go and see a dentist now. Michael: I think I just need a good rest. I _ (3) the swimming game. Kangkang: Maybe you ate much too sweets yesterday evening. Michael: I see. Kangkang: You should take care of yourself. After, t
31、he game you must_(4) home at once, and have _(5). Michael: OK. Thanks a lot. Its very kind of you! ?。写作练习。(10分)请你以“Olympics and china ” 为题,写一篇介绍“奥运与中国” th的短文。(80个词左右)提示词语 host, more and more foreigners , 29, 2021 There will be subways , roads , visitors , 听力材料与答案 听力部分20分 I. 听句子,选出你所听到的单词或短语。读二遍(5分)
32、1.The doctor told me to take the pills three times a day. 2.He played football two hours last Saturday afternoon. 3. Youd better lie down and have a good rest. 4.Drink at least eight cups of water every day. 5.We must eat healthy food . (keys:1-5 BCBAB) II. 听对话,选择正确的答案。读二遍(5分) 1. W: Hi, Michael! Wha
33、ts your favorite sport? M: Oh, I like playing football best. What about you, Linlin? W: Volleyball. Q: Whats Linlins favorite sport? 2. M: Would you mind my smoking here, Linda? W: Not at all. Lin Tao. Q: Who wants to smoke here? 3. W: Whats the matter with you, Kangkang? M: I have a toothache. Q: D
34、oes Kangkang have to see a doctor or a dentist? 4. W: What should we do to fight SARS, Dr. Lee? M: We must eat healthy food and do more exercise. We must not go to crowded places. Q: What should we do to fight SARS? 5. W: Is reading in strong sunlight good or bad for your eyes? M: I think its bad. W
35、: Is taking a walk after meals good or bad for your health? M: Er, let me see. Its good I think. Q: Is reading in strong sunlight good or bad for your health? (Keys:1-5 BACCB) ?。把短文补充完整(5分) James Naismith was Canadaian. He invented basketball in 1891 (1). At that time , He was a PE (2)teacher at Spr
36、ingfield college in the USA (3)Do you know how to scoer (4) in the game? Well , just put the ball into the other sides basket . (5) IV.听短文,根据短文内空容,填入所缺的单词。短文读三遍(5分) As we know, food gives us energy . We must have enough food to keep us healthy. Of course, we must also have the right kinds of food. W
37、e should eat more fruit and vegetables but less meat. If we eat too little or too much food, or if we choose the wrong food, it can make us sick. (Keys: 1. energy 2.enough 3. healthy 4. less 5. choose) 笔试部分80分 I. 用适当的词填空。(每空一词)(5分) 1.cheer 2. on 3. examining 4. mind 5. battle 1、认真研读教材,搞好课堂教学研究工作,向课堂
38、要质量。充分利用学生熟悉、感兴趣的和富有现实意义的素材吸引学生,让学生主动参与到各种数学活动中来,提高学习效率,激发学习兴趣,增强学习信心。提倡学法的多样性,关注学生的个人体验。II. 用所给词的适当形式填空。(5分) 1. cycling 2. tired 3. twice 4. boiled 5. sunny III. 选择填空。(30分) 1-5 AABBB 6-10 ABBCC 11-15 BCCAB IV. 句型转换。根据要求改写句子。(10分) 1. Who is 2.Whats wrong 3.Will they 4.look after 5.didnt teach (二)空间与
39、图形V. 汉英释义。(10分) 1-5 AIFCJ 6-10EDBGH 3、观察身边的简单物体,初步体会从不同角度观察物体所看到的形状可能是不同的,学生将经历从立体图形到平面图形的过程,认识长方形、正方形、三角形、圆等平面图形,初步体会面在体上,进一步发展空间观念。VI. 阅读,选择正确答案。( 5分) 1-5 CABAD 抛物线的顶点在(0,0),对称轴是y轴(或称直线x0)。VII. 完形填空。( 10分) 1-5 BCAAA 6-10 CBDDD 30 o45 o60 oVIII. 书面表达。 1.mater with you 2.toothache 3.will going to 4.
40、go 5.a rest 2、加强基础知识的教学,使学生切实掌握好这些基础知识。特别是加强计算教学。计算是本册教材的重点,一方面引导学生探索并理解基本的计算方法,另一方面也通过相应的练习,帮助学生形成必要的计算技能,同时注意教材之间的衔接,对内容进行有机的整合,提高解决实际问题的能力。小贴士:夏季养生常识 5.二次函数与一元二次方程立夏已过,炎热的夏季来了。夏季是充满生气的季节,但同时也要特别注意养生保健。我们该如何保持在炎热的夏季保持身体健康,从而享受这个夏季呢,让我来告诉大家几个夏季养生保健小常识吧。 1.夏季养生保健之多喝温水 每天要喝七八杯白开水,身体要随时保持水分和补充水分,水在人体内
41、起着至关重要的作明,维持着人体正常的生理功能。水是人体不可缺少的重要组成部分,器官、肌肉、血液、头发、骨骼、牙齿都含有水分,夏季失水会比较多,若不及时补水就会严重影响健康,易使皮肤干燥,皱纹增多,加速人体衰老。另外矿泉水、冷茶,牛奶,苹果汁是理想的解渴饮料。 (一)数与代数2.夏季养生保健之补钾 暑天出汗多,随汗液流失的钾离子也比较多,由此造成的低血钾现象,会引起人体倦怠无力、头昏头痛、食欲不振等症候。热天防止缺钾最有效的方法是多吃含钾食物,新鲜蔬菜和水果中含有较多的钾,可多吃些草莓、杏子、荔枝、桃子、李子等;蔬菜中有大葱、芹菜、毛豆等也富含钾。茶叶中亦含有较多的钾,热天多饮茶,既可消暑,又能
42、补钾,可谓一举两得。 3.夏季养生保健之尽量穿浅色衣服 深色衣服会吸收阳光,使人体温升高燥热;同时蚊子有趋暗的习性,深色容易吸引蚊子,特别是黑色。 点在圆外 dr.4.夏季养生保健之福自“苦”中来 三角形内心的性质:三角形的内心到三边的距离相等. (三角形的内切圆作法尺规作图)苦味食品中所含有的生物碱具有消暑清热、促进血液循环、舒张血管等药理作用。热天适当吃些苦味食品,不仅能清心除烦、醒脑提神,且可增进食欲、健脾利胃。苦瓜:取其未熟嫩果作蔬菜,成熟果瓤可生食,既可凉拌又能肉炒、烧鱼,清嫩爽口,别具风味。苦瓜具有增食欲、助消化、除热邪、解疲乏、清心明目等作用。此外,苦菜、茶叶、咖啡等苦味食品亦可
43、酌情选用。应注意的是,食用苦味食品不宜过量,否则可能引起恶心、呕吐等症状。 5.夏季养生保健之皮肤瘙痒注意事项 夏季出游,因日晒而导致皮肤瘙痒、干疼时,可涂少量肤轻松等软膏,不要用热水烫洗,也不宜用碱性大的肥皂清洗,以免刺激皮肤,加重症状。 双河乡第一中学 2021 学 年 度 秋 季 学 期八年级语文期中质量检测提醒:1、满分150分,完卷时间150分钟。 2、请将答案填写在答题卡上。一 、语文知识积累与运用(含1-7题,1-6题每题2分,7题8分,共20分)1选下列加点字注音全对的一项( )(3分) A. 震悚(sn) 荒谬(mi) 溃退 (ku) 锐不可当(dn) B. 要塞(si) 尴
44、尬(n) 惊骇 (hi) 歼灭(jin) C炽热(zh)瞥见(pi) 诘责(ji) 差使(chi ) D文绉绉(zhu) 屏息(bng) 仲裁(zhng) 踌躇 (chu)2. 下列书写全部正确的一项是( )(3分)A、锐不可挡 抑扬顿挫 待人接物 匿名B、张惶失措 荡然无存 永垂不朽 懊丧C、眼花缭乱 名副其实 粗制滥造 凛冽 D、锲而不舍 振耳欲聋 丰功伟绩 管辖3、 下列加点成语使用错误的一项是() A、在我国历史的曾出现过许多可歌可泣的人物。 B、他的事迹在学校里早被传得家喻户晓了 C、在他杂乱无章的房间里,我终于找到了那本册子。 D、她的衣着艳丽,十分惹人注目。4. 下列句子的排列顺
45、序,正确的一项是( )给自己一点时间,背上行囊,带上简单行李和旧相机,自己写字,自己拍照,走走停停。踏访古村落, ;梦游江南, ;游走大漠, ;探访名山, ;江南的烟雨客,独到塞北看寒雪所有的一切,需要我们在路上! 聆听佛语梵音,晨钟暮鼓 坐在老房子前发呆,阳光温柔抚摸入目的便是黄沙白草,长河落日 感受杏花春雨,听苏子吟唱,渔歌互答 A. B. C. D. 5、下列句子没有语病的一句()(3分)A.赤潮已成为世界性的一种公害,很多地区和国家发生都很频繁。B.中国读者通过时间简史这本书了解了英国著名物理学家霍金。C.北京奥运会组委会召开新闻发布会,举办第一届奥运歌曲征集活动。D.有没有坚定的意志,是一个人在事业上取得成功的前提。 6、下列选项中文学常识表述有误的一项是( )A、鲁迅,原名周树人,他所写的藤野先生节选自呐喊。 B、苏轼,宋代文学家,他与韩愈、柳宗元、曾巩、王安石、苏洵、苏辙、黄廷坚被誉为唐宋八大家。 C、列夫托尔斯泰是奥地利著名小说家斯蒂芬茨威格写的。 D、黄鹤楼这首诗既抒发了人去楼空、世事苍茫的感慨,又表达对友人的