人教版八年级下册第五单元测试题
Unit 5 what were you doing when the rainstorm came 单元测试题(时间：100分钟满分120分)I听小对话,选出与对话内容相符的图片: （5 分）A B C D E1_______ 2._______ 3._______ 4._______ 5._______II. 听下面一段对话，回答6--10题（5分）( )6. What was the weather like yesterday ?A. FineB. CloudyC. Rainy( )7. Why didn’t Tom go to school?A. His father was ill.B. His mother was ill.C. He fell off the bike and the doctor told him to stay in bed..( )8.What was Jack doing when Tom fell off his bike ?A.He was doing his homework.B. He was visiting his parents.C. He was riding around the corner of the park.( )9. What was doing when Tom’s parents got to the hospital ?A.Looking after the patientsB.Beginning patient rounds.C. Looking over Tom ( )10. What did the doctor think of Tom ?A. Hurt badlyB. Nothing seriousC. Be in hospitalIII. 听下面一段文章，选择最佳答案（5分）( )11. What was Mr. Bush doing on Sunday morning ?A.Reading a newspaperB. Breaking the windowC. Doing morning exercise ( )12. Where was Mr Bush then ?A.In the kitchen.B. In the bedroomC. In the living room.( )13. Who broke the window of Mr. Bush’s ?A. Mr. Bush himselfB. Two boysC. One of the two children ( )14. What was Mrs Bush doing When she heard the noise ?A.Cooking breakfast for the family.B. Talking with her husbandC. Dressing herself in the bedroom( )15. What were her parents doing when Connie went into the living room ?A. Calling up the policeB. Talking beside the windowC. Arguing with each other IV. 听完下面的短文，完成句子。
（5分）16.First he ________________ to the bus stop.17.Then while he ___________________for the bus , a bike hit him.18.At noon he didn’t have money _______________________.19.Then in math class he ___________________________his homework.20.At last he had to _______________________________after school.Ⅴ. 单项选择（每小题1分，共15分）从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
( ) 21. The room is not big enough. Why don’t we put the bed _______ the wall?A. fromB. toC. atD. against( ) 22. He felt there was something wrong and asked many times what had happened but nobody told him the _______.A. meaningB. truthC. promiseD. resolution( ) 23. That’s _______. I was sure Jude was right here one minute ago and yet she said she was in Shanghai.A. fairB. strangeC. simpleD. useful( ) 24. Be quiet! A bird _______ something on the window.A. ateB. eatsC. is eatingD. was eating( ) 25. When she got an education in America, she _______ how important her family was for her.A. imaginedB. wonderedC. realizedD. hoped( ) 26. The radio _______ that about 200 people died in the traffic accident.A. guessedB. discussedC. spokeD. reported( ) 27. She worked _______ hard _______ everything was ready by 6 o’clock.A. too; toB. so; thatC. enough; toD. such; that( ) 28. —Did you hear the news of the famous writer’s death?—Yes, just now. He died very _______.A. suddenlyB. successfullyC. clearlyD. completely( ) 29. _______ I passed by Linda’s house, she was playing with her dog.A. WhileB. UntilC. AfterD. When( ) 30. While my mother was sweeping the floor, I _______ Nothing Gold Can Stay on the sofa.A. will watchB. was watchingC. watchD. am watching( ) 31. Why are the lights still on in our classroom? I remember _______ when I left.A. turning them offB. to turn them offC. turning them onD. to turn them on( ) 32. I _______ a lot about American culture while I _______ America.A. learned; went toB. was learning; went toC. learned; was staying inD. was learning; was staying in( ) 33. Robinson woke up too early, and then he was just lying in bed waiting for the alarm to _______.A. work outB. go offC. get offD. run out( ) 34. At the meeting they sat _______, without talking to each other.A. in commonB. in surpriseC. in needD. in silence( ) 35. —Lucy, I plan to drive to Qinghai by myself.—Really? _______! You are still a new driver!A. No problemB. Good ideaC. Have a good timeD. You’re kiddingⅥ. 完形填空(每小题1分，共10分)先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
Five years ago, when I was seven, Mom went out one afternoon. She left me the key 36 the house.When I was playing outside with my friend, a man walked over to me. He said he was my dad's best friend. He asked 37 my dad was. I said he was at work. The man said my dad 38 his book and he needed it back. Then he asked me for the 39 . I gave it to him and continued to play with my friend. Soon the man came out of the house. He gave me the key back and said he 40 find the book and he would come back the next day. He gave me some candy. I thought he was a 41 man.When Mom came home, I told her about the man and she ran to the house 42 . The house was a mess. Mom said some money and her favorite necklace (项链) were missing and she was very 43 . I told her the man would come back the next day. Mom didn't say anything.Soon Dad came home. He called the police. After that, my parents 44 me not to speak to strangers (陌生人), even if they smiled (微笑) and seemed kind. The man never came back, of course and 45 learned a very useful lesson.( )36. A. to B. for C. from D. about( )37. A. how B. who C. where D. which( )38. A. lost B. threw C. shared D. borrowed( )39. A. book B. money C. candy D. key( )40. A. mustn't B. couldn't C. needn't D. shouldn't( )41. A. smart B. nice C. scary D. lazy( )42. A. quickly B. clearly C. easily D. gladly( )43. A. excited B. relaxed C. upset D. afraid( )44. A. allowed B. invited C. told D. helped( )45. A. he B. she C. they D. IⅦ. 情景交际(每小题1分，共5分)根据对话内容，从方框中选择恰当的选项补全对话，其中有两项多余。
(常考题)人教版初中数学八年级数学下册第五单元《数据的分析》测试(包含答案解析)
一、选择题1．某中学足球队的18名队员的年龄情况如下表：则这些队员年龄的众数和中位数分别是（ ） A ．15，15 B ．15，15.5C ．15，16D ．16，152．若一组数据2，3，4，5，x 的方差与另一组数据5，6，7，8，9的方差相等，则x 的值为（ ）. A ．1 B ．6 C ．1或6 D ．5或63．小亮同学想知道自己的体重在班级中是否属于中等水平，则需了解全班同学体重的（ ） A ．平均数 B ．中位数C ．众数D ．极差4．将一组数据中的每一个数减去50后，所得新的一组数据的平均数是2，则原来那组数据的平均数是（ ） A ．50B ．52C ．48D ．25．如果将所给定的数据组中的每个数都减去一个非零常数，那么该数组的 （ ） A ．平均数改变，方差不变 B ．平均数改变，方差改变C ．平均数不变，方差改变 D ．平均数不变，方差不变 6．给出下列命题：①三角形的三条高相交于一点；②如果一组数据中有一个数据变动，那么它的平均数、众数、中位数都随之变动； ③如果不等式()33m x m ->-的解集为1x <，那么3m <；④如果三角形的一个外角等于与它相邻的一个内角则这个三角形是直角三角形； 其中正确的命题有( ) A ．1个B ．2个C ．3个D ．4个7．为了让市民享受到更多的优惠，相关部门拟确定一个折扣线，计划使50%左右的人获得折扣优惠．某市针对乘坐地铁的人群进行了调查．调查小组在各地铁站随机调查了该市1000人上一年乘坐地铁的月均花费（单位：元），绘制了频数分布直方图，如图所示．下列说法正确的是（ ）①每人乘坐地铁的月均花费最集中的区域在80~100元范围内；②每人乘坐地铁的月均花费的平均数范围是40~60元范围内；③每人乘坐地铁的月均花费的中位数在60~100元范围内；④乘坐地铁的月均花费达到80元以上的人可以享受折扣．A．①②④B．①③④C．③④D．①②8．已知数据x，4，0，3，-1的平均数是1，那么它的众数是（）A．4 B．0 C．3 D．-19．有一组数据：1，1，1，1，m．若这组数据的方差是0，则m为（）A．4-B．1-C．0 D．110．某小组7名学生的中考体育分数如下：37，40，39，37，40，38，40，该组数据的众数、中位数分别为（）A．40，37B．40，39C．39，40D．40，3811．下表记录了甲、乙、丙、丁四名同学最近几次数学考试成绩的平均数与方差:要选择一名成绩好且发挥稳定的同学参加数学比赛，应该选择( )A．甲B．乙C．丙D．丁12．为了解某小区“全民健身”活动的开展情况，随机对居住在该小区的40名居民一周的体育锻炼时间进行了统计，结果如下表：锻炼时间（时）34567人数（人）6131452这40名居民一周体育锻炼时间的众数和中位数是( )A．14,5 B．14,6 C．5,5 D．5,6第II卷（非选择题）请点击修改第II卷的文字说明参考答案二、填空题13．据统计，某车间10名员工的日平均生产零件个数为8个，方差为2.5个2，引入新技术后，每名员工每天都比原先多生产1个零件，则现在日平均生产零件个数为______个，方差为______个2．14．如图是甲、乙两人6次投篮测试（每次投篮10个）成绩的统计图，甲、乙两人测试成绩的方差分别记作2S 甲、2S 乙，则2S 甲____2S 乙．（填“＞”，“＝”或“＜”）15．若这8个数据-3, 2,-1,0,1,2,3,x 的极差是11,则这组数据的平均数是______. 16．已知一组数据－1，x ，0, 1，－2的平均数是0，这组数据的极差和标准差分别是 _____17．若一组数据4,,5,,7,9x y 的平均数为6，众数为5，则这组数据的方差为__________． 18．某校在“爱护地球，绿化祖国“的创建活动中，组织了100名学生开展植数造林活动，其植树情况整理如下表： 植树棵数（单位：棵） 4 5 6 8 10 人数（人）302225158则这100名学生所植树棵数的中位数为_____．19．一组数据：1，2，x ，y ，4，6，其中x ＜y ，中位数是2.5，众数是2．则这组数据的平均数是______；方差是______．20．某同学记录了自己一周每天的零花钱（单位：元），分别如下：5，4.5，5，5.5，5.5，5，4.5这组数据的众数和平均数分别是_______和_______.三、解答题21．“绿水青山就是金山银山”，北京市民积极参与义务植树活动．小武同学为了了解自己小区300户家庭在2018年4月份义务植树的数量，进行了抽样调查，随即抽取了其中30户家庭，收集的数据如下（单位：棵）： 1 1 2 3 2 3 2 3 3 4 3 3 4 3 3 5 3 4 3 4 4 5 4 5 3 4 3 4 5 6（1）对以上数据进行整理、描述和分析：①绘制如下的统计图，请补充完整；②求这30户家庭2018年4月份义务植树数量的平均数是和中位数分别是多少？（2）“互联网+全民义务植树”是新时代首都全民义务植树组织形式和尽责方式的一大创新，2018年首次推出义务植树网上预约服务，小武同学所调查的这30户家庭中有7户家庭采用了网上预约义务植树这种方式，由此可以估计该小区采用这种形式的家庭有多少户？22．在全民读书月活动中，某校随机抽样调查了一部分学生本学期计划购买课外书的费用情况，根据图中的相关信息，解答下面问题；（1）这次调查获取的样本容量是________；（2）由统计图可知，这次调查获取的样本数据的众数是________；中位数是________；（3）若该校共有1000名学生，根据样本数据，估计该校本学期计划购买课外书的总花费．23．某校学生会向全校2400名学生发起了爱心捐款活动，为了解捐款情况，学生会随机调查了部分学生的捐款金额，并用得到的数据绘制了如下统计图１和图2，请根据相关信息，解答系列问题：（1）本次接受随机抽样调查的学生人数为人，图1中m的值是；（2）求本次调查获取的样本数据的平均数和中位数；（3）根据样本数据，估计该校本次活动捐款金额为10元的学生人数．24．某校八年级有800名学生，在一次跳绳模拟测试中，从中随机抽取部分学生，根据其测试成绩制作了下面两个统计图，请根据相关信息，解答下列问题：（1）本次抽取到的学生人数为______，扇形统计图中m的值为______．（2）本次调查获取的样本数据的众数是_____（分），中位数是_____（分）．（3）根据样本数据，估计我校八年级模拟体测中得12分的学生约有多少人？25．某市射击队为从甲、乙两名运动员中选拔一人参加省比赛，对他们进行了六次测试，测试成绩如下表(单位：环)：第1次第2次第3次第4次第5次第6次甲10988109乙101081079根据表格中的数据，可计算出甲、乙两人的平均成绩都是9环．（1）分别计算甲、乙六次测试成绩的方差；（2）根据数据分析的知识，你认为选______名队员参赛．26．八（2）班组织了一次经典朗读比赛，甲、乙两队各10人的比赛成绩如下表(单位：分)：）甲队成绩的中位数是分，乙队成绩的众数是分；（2）计算乙队的平均成绩和方差；（3）已知甲队成绩的方差是1.4 分2，则成绩较为整齐的是队．【参考答案】***试卷处理标记，请不要删除一、选择题1．B解析：B【分析】根据众数和中位数的定义求解即可．【详解】解：这组数据按从小到大顺序排列为：14，14，14，15，15，15，15，15，15，16，16，16，16，17，17，17，17，18，则众数为：15，中位数为：（15+16）÷2=15.5．故答案为B．【点睛】本题考查了众数和中位数的知识，属于基础题，解答本题的关键是掌握众数和中位数的定义．2．C解析：C【解析】根据数据x1，x2，…x n与数据x1+a，x2+a，…x n+a的方差相同这个结论即可解决问题.解：∵一组数据2，2，4，5，x的方差与另一组数据5，6，7，8，9的方差相等，∴这组数据可能是2，3，4，5，6或1，2，3，4，5，∴x=1或6，故选C.“点睛”本题考查方差、平均数等知识，解题的关键领域结论：数据x1，x2，…x n与数据x1+a，x2+a，…x n+a的方差相同解决问题，属于中考常考题型.3．B解析：B【分析】根据中位数的定义进行解答即可． 【详解】∵小亮同学想知道自己的体重在班级中是否属于中等水平， ∴需了解全班同学体重数据的中间的数据，即中位数， 故选：B ． 【点睛】本题主要考查统计的有关知识，中位数是一组数据中，最中间的数据；对统计量进行合理的选择和恰当的运用是解题关键．4．B解析：B 【详解】解：由题意知，新的一组数据的平均数=1n[（1x ﹣50）+（2x ﹣50+…+（n x ﹣50）]= 1n[（12x x ++…+n x ）﹣50n]=2， ∴1n（12x x ++…+n x ）﹣50=2， ∴1n（12x x ++…+n x ）=52， 即原来的一组数据的平均数为52． 故选B ．5．A解析：A 【解析】试题分析：根据平均数、方差的计算公式即可判断. 由题意得该数组的平均数改变，方差不变，故选A. 考点：本题考查的是平均数，方差点评：数学公式的计算与应用是初中数学学习中的一个基本能力，此类问题往往考查学生对数学公式的理解能力，难度不大.6．B解析：B 【分析】根据三角形的高、平均数、众数、中位数的定义、不等式的基本性质和邻补角的定义逐一判断即可． 【详解】①钝角三角形的三条高不相交（三条高所在的直线交于一点），故错误；②如果一组数据中有一个数据变动，那么它的平均数会随之变动，但众数和中位数不一定变动，故错误；③如果不等式()33m x m ->-的解集为1x <，可得m －3＜0，那么3m <，故正确；④如果三角形的一个外角等于与它相邻的一个内角，根据邻补角的定义可得这个外角和与它相邻的一个内角之和为180°， ∴三角形的这个内角为180°÷2=90° 则这个三角形是直角三角形，故正确． 综上：正确的有2个 故选B ． 【点睛】此题考查的是三角形的相关性质、定义、数据的平均数、众数、中位数的定义和不等式的基本性质，掌握三角形的相关性质、定义、数据的平均数、众数、中位数的定义和不等式的基本性质是解决此题的关键．7．C解析：C 【分析】根据频数分布直方图中的数据，求得众数，平均数，中位数，即可得出结论． 【详解】解：①根据频数分布直方图，可得众数为60−80元范围，故每人乘坐地铁的月均花费最集中的区域在60−80元范围内，故①不正确；②每人乘坐地铁的月均花费的平均数＝876001000=87.6＝87.6元，所以每人乘坐地铁的月均花费的平均数范围是80~100元，故②错误；③每人乘坐地铁的月均花费的中位数约为80元，在60~100元范围内，故③正确；④为了让市民享受到更多的优惠，若使50%左右的人获得折扣优惠，则乘坐地铁的月均花费达到80元以上的人可以享受折扣，故④正确． 故选：C 【点睛】本题主要考查了频数分布直方图，平均数以及中位数的应用，将一组数据按照从小到大（或从大到小）的顺序排列，如果数据的个数是奇数，则处于中间位置的数就是这组数据的中位数．如果这组数据的个数是偶数，则中间两个数据的平均数就是这组数据的中位数．8．D解析：D 【分析】先根据平均数的定义求出x ．这组数据中出现次数最多的数是众数． 【详解】∵x ，4，0，3，-1的平均数是1， ∴403115x +++-=⨯ ∴1x =-∴这组数据是14031--，，，， ∴众数是1-故选：D．【点睛】本题考查了平均数的定义和确定一组数据的众数的能力．要明确定义，找到这组数据中出现次数最多的数．9．D解析：D【分析】方差：一组数据中各数据与它们的平均数的差的平方的平均数，叫做这组数据的方差．【详解】依题意可得，平均数：45mx∴224441555m mm解得m=1，故选D．【点睛】本题考查了方差，熟练运用方差公式是解题的关键．10．B解析：B【分析】根据众数和中位数的概念求解可得．【详解】将数据重新排列为37，37，38，39，40，40，40所以这组数据的众数为40，中位数为39，故选B．【点睛】本题考查了中位数和众数的概念，一组数据中出现次数最多的数据叫做众数；将一组数据按照从小到大(或从大到小)的顺序排列，如果数据的个数是奇数，则处于中间位置的数就是这组数据的中位数；如果这组数据的个数是偶数，则中间两个数据的平均数就是这组数据的中位数．11．C解析：C【解析】【分析】方差是反映一组数据的波动大小的一个量．方差越大，则平均值的离散程度越大，稳定性也越小；反之，则它与其平均值的离散程度越小，稳定性越好，选出方差最小，而且平均数较大的同学参加数学比赛．【详解】∵3.6＜7.4＜8.1，∴甲和丙的最近几次数学考试成绩的方差最小，发挥稳定，∵95＞92，∴丙同学最近几次数学考试成绩的平均数高，∴要选择一名成绩好且发挥稳定的同学参加数学比赛，应该选择丙．故选C．【点睛】此题主要考查了方差的含义和求法，要熟练掌握，解答此题的关键是要明确：方差是反映一组数据的波动大小的一个量．方差越大，则平均值的离散程度越大，稳定性也越小；反之，则它与其平均值的离散程度越小，稳定性越好．12．C解析：C【解析】【分析】众数是一组数据中出现次数最多的数据，中位数是将一组数据按大小依次排列，把处在最中间位置的一个数据或者最中间两个数据的平均数叫这组数据的中位数．本组数据中，把数据按照从大到小的顺序排列，最中间的两个数的平均数即为中位数．【详解】由统计表可知：体育锻炼时间最多的是5小时，故众数是5小时；统计表中是按从小到大的顺序排列的，最中间两个人的锻炼时间都是5小时，故中位数是5小时．故选C．【点睛】本题考查了确定一组数据的众数和中位数的能力．将一组数据从小到大（或从大到小）重新排列后，最中间的那个数（最中间两个数的平均数），叫做这组数据的中位数．注意找中位数的时候一定要先排好顺序，然后再根据奇数和偶数个来确定中位数．如果数据有奇数个，则正中间的数字即为所求；如果是偶数，则找中间两位数的平均数．二、填空题13．925【分析】根据平均数与方差的定义计算即可得答案【详解】∵每名员工每天都比原先多生产1个零件∴现在日平均生产零件个数为=9设原先每人日生产零件的个数为：x1x2x3……x10∴原先的方差为=25∴解析：9 2.5【分析】根据平均数与方差的定义计算即可得答案．【详解】∵每名员工每天都比原先多生产1个零件，∴现在日平均生产零件个数为8101010⨯+=9， 设原先每人日生产零件的个数为：x 1、x 2、x 3、……x 10，∴原先的方差为22212101(8)(8)(8)10x x x ⎡⎤-+-+-⎣⎦…+=2.5， ∴现在的方差为22212101(19)(19)(19)10x x x ⎡⎤+-++-++-⎣⎦…+=22212101(8)(8)(8)10x x x ⎡⎤-+-+-⎣⎦…+=2.5， 故答案为：9，2.5【点睛】本题考查平均数与方差，熟练掌握定义与计算公式是解题关键．14．【分析】先分别求出甲乙的平均数再根据方差公式计算各自的方差进行比较即可得【详解】即故答案为【点睛】本题考查了方差的计算熟练掌握方差的计算公式是解题的关键解析：<【分析】先分别求出甲、乙的平均数，再根据方差公式计算各自的方差，进行比较即可得.【详解】87869823==63x +++++甲， 74795713==62x +++++乙， 222221232323238S =38769=633339⎡⎤⎛⎫⎛⎫⎛⎫⎛⎫⨯-+-+-+-⎢⎥ ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭⎢⎥⎣⎦甲， 2222211313131331S =37459=6222212⎡⎤⎛⎫⎛⎫⎛⎫⎛⎫⨯-+-+-+-⎢⎥ ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭⎢⎥⎣⎦乙， 831912<， 即22S S <甲乙，故答案为<．【点睛】本题考查了方差的计算，熟练掌握方差的计算公式是解题的关键.15．15或-05【分析】根据极差的概念求出x 的值然后根据平均数的概念求解【详解】一组数据-32-10123x 的极差是11当x 为最大值时x ﹣（﹣3）=11x=8平均数是：；当x 是最小值时3﹣x=11解得：解析：1.5或-0.5【分析】根据极差的概念求出x 的值，然后根据平均数的概念求解．【详解】一组数据-3, 2,-1,0,1,2,3,x 的极差是11，当x 为最大值时，x ﹣（﹣3）=11，x=8，平均数是：[3+ 2+1+0+1+2+3+8]8 1.5--÷=（） ；当x 是最小值时，3﹣x=11，解得：x=﹣8，平均数是：[3+ 2+1+0+1+2+3+(8)]80.5--÷=-（）-，故答案为：1.5或-0.5【点睛】本题考查了极差和平均数，掌握平均数是所有数据的和除以数据的个数；极差就是这组数中最大值与最小值的差，是解题的关键16．4【解析】试题解析：4【解析】试题∵x=0-（-1+0-2+1），解得x=2，故极差为：2-（-2）=4，则方差s 2=15[（-1-0）2+（2-0）2+（0-0）2+（1-0）2+（-2-0）2]=2，．17．【分析】根据平均数的计算公式可得再根据众数是5所以可得xy 中必须有一个5则另一个就是6通过方差的计算公式计算即可【详解】解：∵一组数据的平均数为6众数为5∴中至少有一个是5∵一组数据的平均数为6∴∴ 解析：83【分析】根据平均数的计算公式，可得11x y +=，再根据众数是5，所以可得x,y 中必须有一个5，则另一个就是6，通过方差的计算公式计算即可.【详解】解：∵一组数据4,,5,,7,9x y 的平均数为6，众数为5，∴,x y 中至少有一个是5，∵一组数据4,,5,,7,9x y 的平均数为6， ∴()4579166x y +++++=，∴11x y +=，∴,x y 中一个是5，另一个是6，∴这组数据的方差为()()()()()22222846256661[]676963-+-+-+-+-=； 故答案为83． 【点睛】 本题是一道数据统计中的综合性题目，涉及知识点较多，应当熟练掌握，特别是记忆方差的计算公式.18．5【解析】【分析】直接利用中位数定义求解【详解】第50个数和第55个数都是5所以这100名学生所植树棵数的中位数为5（棵）故答案为5【点睛】考查了中位数：将一组数据按照从小到大（或从大到小）的顺序排解析：5【解析】【分析】直接利用中位数定义求解．【详解】第50个数和第55个数都是5，所以这100名学生所植树棵数的中位数为5（棵）．故答案为5．【点睛】考查了中位数：将一组数据按照从小到大（或从大到小）的顺序排列，如果数据的个数是奇数，则处于中间位置的数就是这组数据的中位数．如果这组数据的个数是偶数，则中间两个数据的平均数就是这组数据的中位数．19．3【解析】【分析】由中位数及众数的定义和给定的条件求出xy 的值然后根据平均数的定义求出平均数即可；利用方差公式计算即可求出方差【详解】由一组数据12xy46的中位数是25众数是2则有x=2y=3∴这解析：3 83【解析】【分析】由中位数及众数的定义和给定的条件求出x ，y 的值，然后根据平均数的定义求出平均数即可；利用方差公式计算即可求出方差.【详解】由一组数据1，2，x ，y ，4，6的中位数是2.5，众数是2，则有x=2，y=3，,∴这组数据的平均数为：12234636+++++=.∴这组数据的平均数为3； 这组数据的方差为：22222218(13)(23)(23)(33)(43)(63)63⎡⎤-+-+-+-+-+-=⎣⎦. ∴这组数据的方差为83. 故答案为3；83. 【点睛】本题考查数据的平均数、中数、方差，掌握平均数、中数、方差的的定义是解题的关键. 20．55【解析】【分析】根据众数和平均数的定义求解【详解】解：5出现了三次出现次数最多所以这组数据的众数是5这组数据的平均数=（5+45+5+55+55+5+45）=5故答案为：5；5【点睛】本题考查平解析：5 5【解析】【分析】根据众数和平均数的定义求解．【详解】解：5出现了三次，出现次数最多，所以这组数据的众数是5，这组数据的平均数=17（5+4.5+5+5.5+5.5+5+4.5）=5． 故答案为：5；5.【点睛】本题考查平均数的求法以及众数的定义：一组数据中出现次数最多的数据叫做众数． 三、解答题21．（1）①补图见解析；②这30户家庭2018年4月份义务植树数量的平均数是3.4棵，中位数是3棵；（2）估计该小区采用这种形式的家庭有70户．【分析】（1）①由已知数据知3棵的有12人、4棵的有8人，据此补全图形可得；②根据平均数和众数的定义求解可得；（2）用总户数乘以样本中采用了网上预约义务植树这种方式的户数所占比例可得．【详解】（1）①由已知数据知3棵的有12人、4棵的有8人，补全图形如下：②这30户家庭2018年4月份义务植树数量的平均数是1223312485461 3.430⨯+⨯+⨯+⨯+⨯+⨯=（棵） 中位数：从小到大排列，中位数应为第15位和第16位的数的平均值：3332+=（棵） 答：这30户家庭2018年4月份义务植树数量的平均数是3.4棵，中位数是3棵． （2）估计该小区采用这种形式的家庭有300×730=70户， 答：估计该小区采用这种形式的家庭有70户．【点睛】 本题主要考查了频数分布直方图，中位数、平均数的定义及样本估计总体思想的运用．读懂统计图，从统计图中得到必要的信息是解决问题的关键．条形统计图能清楚地表示出每个项目的数据．22．（1）40；（2）30元，50元；（3）50500元．【分析】（1）根据条形统计图的信息把计划购买课外书的不同费用的人数相加计算即可； （2）根据众数的定义，中位数的定义，逐一进行求解即可；（3）先根据条形统计图展现的数据，计算样本中每个学生平均花费，再用全校总人数×每个学生平均花费，即可估算全校购买课外书的总花费．【详解】解：（1）6121084=40++++（2）购买30元课外书的人数最多，所以这次抽样的众数是30元；购买课外书排第20，第21的费用均为50元，所以这次抽样的中位数是50元； （3）样本中平均每个学生的费用是620123010508804100=50.56121084⨯+⨯+⨯+⨯+⨯++++（元） 因此该校1000学生购买课外书的总花费约为100050.5=50500⨯（元）答：该校本学期计划购买课外书的总花费约为50500元．【点睛】本题主要考查抽样调查中样本容量，众数，中位数的定义及由样本数据估算总体数量的知识．23．（1）50，32；（2）16，15；（3）768.【分析】（1）根据题意由5元的人数及其所占百分比可得抽样调查的学生人数，用10元人数除以抽样调查的学生人数可得m 的值；（2）由题意根据统计图可以分别得到本次调查获取的样本数据的平均数和中位数；（3）由题意根据全校总人数捐款金额为10元的学生人数所占乘以抽样调查的学生人数的比例，即可估计该校本次活动捐款金额为10元的学生人数．【详解】解：（1）本次接受随机抽样调查的学生人数为4÷8%=50人， ∵16100%32%50⨯=， 32m ∴=.故答案为：50；32.（2）本次调查获取的样本数据的平均数是：451610121510208301650⨯+⨯+⨯+⨯+⨯=（元）； 本次调查获取的样本数据的中位数是：15元.（3）估计该校本次活动捐款金额为10元的学生人数为2400×32%=768人．【点睛】本题考查条形统计图和扇形统计图、用样本估计总体、平均数、中位数，解题的关键是明确题意，找出所求问题需要的条件．24．（1）50；28；（2）12，11；（3）八年级模拟体测中得12分的学生约有256人．【分析】（1）根据得8分的学生人数和所占的百分比可以求得本次调查的人数，然后根据扇形统计图中的数据可以求得m 的值；（2）根据统计图中的数据可以求得本次调查获取的样本数据的众数和中位数；（3）根据统计图中的数据可以计算出我校九年级模拟模拟体测中得12分的学生约有多少人．【详解】：（1）本次抽取到的学生人数为：4÷8%=50，m%=1-8%-10%-22%-32%=28%，故答案为：50，28；（2）本次调查获取的样本数据的众数是12分，中位数是11分；（3）800×32%=256人；答：八年级模拟体测中得12分的学生约有256人；【点睛】此题考查扇形统计图、条形统计图、用样本估计总体、中位数、众数，解题的关键是明确题意，利用数形结合的思想解答．25．（1）甲、乙六次测试成绩的方差分别是223S =甲，243S =乙；（2）甲【分析】（1）根据方差的定义，利用方差公式分别求出甲、乙的方差即可；（2）根据平均数相同，利用（1）所求方差比较，方差小的成绩稳定，即可得答案．【详解】（1）甲、乙六次测试成绩的方差分别是： (222222212[(109)(99)(89)(89)(109)99)63S ⎤=⨯-+-+-+-+-+-=⎦甲， (222222214[(109)(109)(89)(109)(79)99)63S ⎤=⨯-+-+-+-+-+-=⎦乙， （2）推荐甲参加全国比赛更合适，理由如下：∵两人的平均成绩相等，∴两人实力相当；∵甲的六次测试成绩的方差比乙小，∴甲发挥较为稳定，∴推荐甲参加比赛更合适．故答案为：甲【点睛】 本题考查方差的求法及利用方差做决策，方差反映了一组数据的波动大小，方差越大，波动性越大，反之也成立；熟练掌握方差公式是解题关键．26．（1）9.5，10；（2）9分，1分2；（3）乙【分析】（1）根据中位数的定义求出最中间两个数的平均数；根据众数的定义找出出现次数最多的数即可；（2）先求出乙队的平均成绩，再根据方差公式进行计算；（3）先比较出甲队和乙队的方差，再根据方差的意义即可得出答案．【详解】（1）把甲队的成绩从小到大排列为：7，7，8，9，9，10，10，10，10，10，最中间两个数的平均数是（9+10）÷2=9.5（分），则中位数是9.5分；乙队成绩中10出现了4次，出现的次数最多，则乙队成绩的众数是10分；故答案为：9.5，10；（2）乙队的平均成绩是：()104827939110⨯+⨯++⨯=⨯（分）， 则方差是：()()()()22224109211089793991⎡⎤⨯-+⨯-+-+⨯-=⎣⎦⨯（分2） ； （3）∵甲队成绩的方差是1.4，乙队成绩的方差是1，∴成绩较为整齐的是乙队；故答案为：乙．【点睛】本题考查方差、中位数和众数：中位数是将一组数据从小到大（或从大到小）重新排列后，最中间的那个数（或最中间两个数的平均数），一般地设n 个数据x 1，x 2，…x n 的平均数为x ，则方差S 2=()()()()22221231n x x x x x x x x n ⎡⎤-+-+-++-⎣⎦，它反映了一组数据的波动大小，方差越大，波动性越大．。
人教版八年级英语下册unit5--6单元测试题(有答案)
人教版八年级英语下册unit5单元测试题一．翻译下列短语。
1..确信;确认_______________2.拍打… …_______________3.进人梦乡；睡着_______________4.逐渐变弱；逐渐消失_______________5.一团糟_______________6.使……分离_______________7.在困难的时候_______________ 8. (闹钟)发出响声_______________9.洗热水澡_______________ 10.错过公交车_______________11.接电话_______________ 12.使……靠拢_______________13.在这个地区_______________ 14.错过这个事件_______________15.动物保护热线_______________ 16.走路经过_______________17.在某人去……的路上_______________18.历史上的重大事件_______________19.例如_______________ 20.被杀害_______________21.50多(岁）_______________ 22.通过广播_______________23.沉默;无声_______________ 24.世贸中心______________25.拆除;摧毁_______________ 26.对……有意义_______________二.用所给动词的正确形式填空。
1. —What_____ you_____(do) when he arrived?—I ___________(watch) TV at that time.2. When I___________ (walk) in the street, I__________ (meet) my best friend Jim.3. Mom_________ (buy) my father a nice coat and a pair of trousers last Sunday.4. While my parents were doing some cleaning, my sister_________ (shout) to me loudly.5. When he saw the thief steeling things in the office, he closed the door and________(call)thepolice.6. I first met my girl friend two years ago, she__________ (work) in the supermarket.7. Thank you for_________ (teach) us so well, my dear teacher.8. What________ your parents_________ (do) at nine o’clock last nig ht?9. Betty _____________(watch) TV last night.10.The Shuttles usually _____________ (have) supper at 6:30 .11.The boys _____________ (play) football on the playground now.12.Lucy _____________ (leave) the classroom half an hour ago.13.It _____________ (snow) heavily when they left the station.14._____________ she _____________ (fall) off the tree just now?15.It _____________ (rain) almost every day last month.16.---Where _____________ you _____________ (catch) the fish?---I _____________ (catch) it in the river near the house.17.She _____________ (write) a letter to her friend last night. But I don't know whether she hasfinished it or not.18.To tell the __________(true), I don’t think you are right.19.They finished their work in _________ (silent).20.I have problems ___________(do) my homework..三．用when 和while 来填空。
人教版八年级英语下册第5-6单元单元测试试题(有答案)
人教版八年级下册第5-6单元检测题一、方格里的词你还记得吗？请你在下面找出它们的意思，并把字母编号写在对应的答题卡上。
（本大题共10小题，每小题1分，满分10分）A. stormB.sillyC. strange D passage E. cheatF .shine G. brave H. shoot I. icy J. couple()1.unusual or unexpected, and makes you feel slightly nervous or afraid()2.gives out bright light.()3. very bad weather, with heavy rain, strong winds, and often thunder and lightning()4. does not show fear in difficult or dangerous situations()5.foolish, childish, or ridiculous()6. do not obey a set of rules, deprive somebody of something by deceit()7. a section of text;a way through or along which someone or something may pass()8. a pair of people who live together()9. Very cold, has ice on it()10. fire a bullet from a weapon such as a gun二、单项选择（本大题共15小题，每小题1分，满分15分）从每小题所给的A、B、C、D四个选项中选出一个可以填入空白处的最佳选项。
()1. 1. Long long ago, there was _________emperor in _________Europe.A. a, aB. an, anC. a, /D. an, /()2.The news on TV ____ that the ISIS terrorists killed at least 129 people in Paris.A．reported B．realized C．returned D．refused()3. ---Will you please tell her about the news?---Sure, I’ll tell her about it as soon as she __________ back.A. comeB. will comeC. cameD. comes()4．When we went in，we saw Tina sitting on the floor ____ the wall and crying alone.A．about B．over C．against D．with()5．_______ we came back to school, Dale was playing the violin.A. WhenB. WhileC. UntilD. After()6．I was late for school because my alarm didn't ____．A．go off B．go out C．go back D．go away()7. The old photo reminds me __________ my childhood.A. forB. withC. toD. of()8. We are trying to ________our country ________a more beautiful country.A. compare, withB. compare, toC. turn, intoD. look, after()9. We were so ________by the girl’s s tory that we couldn`t stop ________.A. move, to cryB. move, cryingC. moved, to cryD. moved, crying()10．You dropped the litter here. Would you mind ____？A．to pick up B．picking it up C．to pick it up D．picking up it()11. Tom won't go to the zoo tomorrow unless he _______homework this afternoon.A. finishB. finishingC. finishesD. will finish()12．When I walked past the classroom，I saw some students ____ in it.A．read B．reading C．to read D．to reading()13. They went to Shanghai ________the first time ________October, 2002.A. at, inB. at, onC. for, inD. for, on()14.---- Could you please tell me ________?-----They’re over there.A. where are the restroomsB. where were the restroomsC. where the restrooms areD. where the restrooms were()15. I think Song Zuying has a good __________. I like her songs.A. soundB. voiceC. noiseD. news三、完形填空（本大题共10小题，每小题1分，满分10分）阅读下面短文，掌握其大意，然后从各小题所给的四个选项中，选出最佳选项。
人教版八年级英语下册第五单元测试及答案
人教版八年级英语下册第五单元测试限时：60分钟满分：100分一、单项选择(每小题1分，共15分)1. I heard a(n)________ noise just now. It made me scared.A. beautifulB. typicalC. strangeD. interesting2. The pupil was so tired that he________ at his desk.A. fell asleepB. woke upC. got upD. went to bed3. At times, we need to stay________ and think about something carefully.A. in factB. in dangerC. in commonD. in silence4. I didn't understand what my teacher said________, but later I got it.A. at lastB. at firstC. at leastD. in fact5. When his name was called, I saw him________ from his seat.A. roseB. raiseC. raisedD. rise6. This afternoon, on the way home he found some money on the ground and________.A. pick them upB. picked up itC. picked it upD. picked up them7. I got up late on Friday morning because the alarm didn't________.A. put offB. take offC. turn offD. go off8. One of the opinions________ smoking is that it is harmful to people's health.A. forB. againstC. atD. in9. Lucy has made great progress in Chinese________.A. recentlyB. hardlyC. probablyD. nearly10. We should________ how important health is to us before it's too late.A. supposeB. expectC. realizeD. cause11. His job is to________ that drivers obey(服从) the traffic rules.A. make plansB. find outC. think ofD. make sure12. Pass me the glasses, Tony. I can________ watch TV clearly.A. hardlyB. reallyC. ratherD. clearly13. We soon________ the mountains.A. made our ways toB. made way toC. made us way toD. made our way to14. —Could you tell me where you found Miss Gao just now?—Certainly. In the principal's office. They________ happily at that time.A. are talkingB. have talkedC. were talkingD. talked15. —I called you at 5：00 yesterday afternoon, but no one answered.—Sorry. I ________ football with my friends at that time.A. playB. playedC. will playD. was playing二、完形填空(每小题1.5分，共15分)It was a Friday evening. I was waiting at the bus stop after school when a car stopped and the driver opened the door. It was my ________16.“Quick, get in！” he told me. I was very ________17, but I did as he said.At first, I was worried that something ________18happened.Then, I noticed my mother. She was also ________19the car and on the back seat. There were some bags of clothes and ________20food. My father was driving the car, but he was not driving ________21.He was driving out of the town. “Where are we going？” I asked.It was a warm evening and lots of people were walking along the road. It was the ________22day of the term. Did my parents have a big surprise for me? We were going somewhere special—________23where? The next thing I can remember is falling ________24. When I woke up, I saw the sea. We were at the beach. My father was smiling. “Here we are, ” he said. “The summer holiday ________25 now！”16. A. father B. mother C. brother D. sister17. A. sad B. surprised C. Excited D. glad18. A. good B. important C. interesting D. bad19. A. in B. on C. by D. at20. A. many B. no C. some D. few21. A. abroad B. home C. there D. here22. A. first B. one C. worst D. last23. A. or B. for C. but D. and24. A. asleep B. ill C. silent D. quiet25. A. started B. starts C. ended D. ends三、阅读理解(每小题2分，共10分)Mahalya is a student in Grade 8 at Lamberton Middle School in Pennsylvania, US. Every afternoon at 2 o'clock, she runs to a store at her school. She is not running to buy snacks. Instead, she works as the storekeeper and helps count change (零钱) for customers.“I didn't know that it took so much work. I didn't do anything like this, ” Mahalya told The Seaeinel, a local newspaper.In fact, she and another 11 students work as the storekeepers at Bison Bargains, the school's first student－run store. It started on February 22, and it opens each school day during break time from 2 to 2：30 p. m. It mainly sells stationery and snacks.Through this, students see what a business is like. Christian, a 14－year－old student, was really surprised by how hard it was to avoid making mistakes and do the transactions (交易). “It's a kind of challenge to learn all the information on the stock (供应物) lists and remember all the prices of the products, ” Christian told the newspaper.To help them learn about business, they took a class. The class taught students how to usemoney and some simple business rules.The school did a survey on what products students would buy from a school store. In the future, they plan to sell things made by the students themselves. For example, students can sell their homemade pencil boxes and phone cases.26. Mahalya runs to a store in her school to________ .A. buy some snacksB. learn about customersC. work as the storekeeperD. learn about the information27. What does the underlined word “stationery” mean in Chinese?A. 文具B. 餐具C. 道具D. 家具28. How long does Bison Bargains open each school day during break time?A. 60 minutes.B. 50 minutes.C. 40 minutes.D. 30 minutes.29. The purpose of having a student－run store is to________.A. teach students to learn from mistakesB. help students see what a business is likeC. sell more stationery and snacks to studentsD. start a class on how to use money in the store30. What is this passage mainly about?A. The school's new program, a student－run store.B. The results of a survey on the student－run store.C. The reasons of opening a student－run store.D. The rule of the studentrun store.四、任务型阅读(每小题2分，共10分)It was raining heavily while I was walking up the hill towards the station at six o'clock on Saturday morning. At this early hour there wasn't much traffic and there weren't many people. While I was crossing the road near the top of the hill, a car came round the corner.①It was traveling very fast. Suddenly it hit a lamp post(柱) and turned over.I ran to the car________(help) the driver at once. He was badly hurt and there was lots of blood on his face. A young woman hurried into the station and phoned for an ambulance(救护车) when I took care of②the driver. Some people came to see what happened, and there was nothing we could do. A policeman arrived a few minutes later and asked me lots of questions about the accident. Then the ambulance arrived and took the driver to the hospital.On Monday morning I went to the hospital to see the man. The doctor told me that he was much better and that he would leave hospital after a few days' rest.任务一：根据短文内容，回答问题。
2020-2021学年 人教版八年级英语下册 Unit 5 单元测试(含答案)
人教版八年级英语下册Unit5 单元测试姓名：__________ 班级：__________ 学号：__________一、单选题（共10题；共20分）1.We were reading the newspaper _______ suddenly the light went out (熄灭).A.whenB.whileC.asD./2.What _________ when the earthquake happened on May 12th?A.are you doingB.were you doingC.do you doD.did you do3.Do you remember ________ when the car accident happened?A.what you were doingB.what were you doingC.what you didD.what did you do4.Jane was not at home at that time and her parents weren't ．A.tooB.eitherC.alsoD.neither5.It's very cold in Harbin．Snowing in October is nothing there．A.strangeefulC.traditionalD.natural6.一Who the singing competition?一I heard Joe Jill in the competition．A.won；wonB.beat；wonC.won；beatD.beat；beat7.—Why did they the houses?—Because they will build a park there．A.take downB.write downC.cut downD.turn down8.一I heard Frank would join the music club．一He's not interested in music at all．A.Why not?B.No problem．C.You’re kidding!D.It\s up to you．9.—When did the classroom have a power cut?—This morning, while we ________ a physics lesson.A.have hadB.were havingC.are havingD.will have10.—David, I'm going to drive all the way to Tibet from Wuhan by myself.—What? ________！A.No problemB.Good ideaC.Have a good timeD.You're kidding二、完形填空（共10分）On a cold January day, Jimmy and his father were skating on a lake.Suddenly the ice near Jimmy1 ,and he felt into the cold water.Jimmy's father jumped into the water, but he couldn't find Jimmy.Severalminutes passed.The father 2 couldn't‘find Jimmy.Some firemen(消防队员)arrived.Twenty minutes later they found Jimmy and got 3 out of the water.Jimmy was not breathing, and his heart was not beating.The situation seemed 4 .However, the firemen didn’t give up and still did CPR(心肺复苏) on Jimmy.Luckily, Jimmy began to breathe，and his heart began to beat.He was taken to the hospital at once.After six weeks in the hospital Jimmy got 5 .He began to walk.talk and play again.Jimmy was in the water 6 more than 20 minutes.He couldn't breathe in the water. 7 today he is alive(活着)and healthy.How is that possible? That's because the water was ice.cold.When it's really cold, the brain(大脑)slows down.It does not 8 much oxygen(氧气).Jimmy's father believes there is another 9 .He says，“Jimmy is alive today because he is a10 little boy.”1. A. 10st B. broke C. left D. grew2. A. still B. even C. almost D. never3. A. he B. him C. they D. them4. A. true B. free C. hopeless D. meaningless5. A. older B. younger C. better D. worse6. A. of B. for C. like D. with7. A. If B. So C. But D. Unless8. A. need B. bring C. feel D. share9. A. example B. symbol C. reason D. prediction10. A. serious B. quiet C. careful D. strong三、阅读理解（共2题；共30分）AOnce there lived an old man in a town. He always forgot a lot of things. So his wife always had to say to him, “Don't forget this.” One day he went for a long trip by train alone. Before he left home, his wife said, “Now you have all these things that you need on your way. Take care of your things on the way.” He went to the station. He bought a ticket and got on the train with it. About an hour later, the conductor (列车员) began to see the tickets. He came to the old man and said，“Will you please show me your ticket?” The old man looked for his ticket in all his pockets but he could not find it. He was very worried. “I can't find my ticket. I really bought a ticket before I got on the train, ”said the old man. “I think you are right. I believe you bought a ticket. All right, you don't haveto buy another ticket,” said the conductor kindly. But the old man still looked worried and said sadly, You don't know why I'm worried. If I don't find my ticket, I can't remember my station. Where am I going?”根据短文内容判断正误。
最新人教版八年级下册英语第五单元测试题附答案
人教版八年级下册英语第五单元测试题附答案听力部分（25 分）Ⅰ.听句子，选择与其意思相符的图片。
(5 分)( )1.( )2.( )3.( )4.( )5.Ⅱ.听句子，选择最佳答语。
(5 分)( )6.A.Yes，I do. B．No，I won't. C．Yes，I was.( )7.A.Sleeping. B．Enjoy reading. C．Do some cooking. ( )8.A.Yes，I can. B．This is Jenny speaking.C．I'm here.( )9.A.I was taking a shower. B．In a library. C．Mary.( )10.A.The same to you. B．You're welcome.C．I will.Thank you.Ⅲ.听长对话，选择正确答案。
(5 分)听第一段对话，回答第11－12 小题。
( )11.What happened at about 10：00 a．m.on June 20th，2013? A．China was sending Shenzhou X.B．Shenzhou X was flying back to the earth.C．The astronaut was having class in Shenzhou X.( )12.What was Li Lei doing at that time?A．Studying for a test. B．Having his class. C．Watching TV.听第二段对话，回答第13－15 小题。
( )13.Who jumped into the river?A．A young man. B．A driver. C．Rose.( )14.When did the accident happen?A．At 7：20 a．m. B．At 7：30 a．m.C．At 7：40 a．m.( )15.How many people are mentioned (提及的) in the accident? A．Two. B．Three. C．Four.Ⅳ.听短文，选择正确答案。
人教版八年级英语下册第五单元测试及答案
人教版八年级英语下册第五单元测试及答案1.I heard a strange noise just now。
which made me feel scared.2.XXX.3.At times。
we need to stay in silence and think about something carefully.4.I XXX't XXX said at first。
but later I got it.5.When his name was called。
I saw him rise from his seat.6.This afternoon。
on the way home he found some money on the ground and picked it up.7.I got up XXX't go off.8.One of the ns against smoking is that it is harmful to people's health。
二、完形填空(每小题1分，共10分)When we are young。
we have many dreams。
We __1__ to be astronauts。
doctors。
teachers。
or XXX。
But as we grow older。
we begin to __2__ that some of our dreams are not __3__to come true。
We may not be able to fly to the moon。
or e a superhero。
but we can still __4__ our dreams in other ways。
For example。
if you dream of ing a doctor。
but find that you do not have the grades to get into medical school。
人教版八年级英语下册Unit 5 单元测试题含答案
八年级英语下册Unit 5 单元测试题(45分钟100分)第Ⅰ卷(共40分)Ⅰ. 听力(10分)（略）Ⅰ. 单项选择(10分)( )1. This morning I had hardly got to my school when it ________ to rain.A．had begun B．was beginningC．began D．begins( )2. He ________ when the UFO arrived. He didn't wake until the UFO disappeared.A．slept B．was sleepingC．was doing homew ork D．was singing( )3. —Where were you at 7：00 last night?—I ________ to my mom at home.A．write B．was writingC．wrote D．am writing( )4. —Did you see Mr Black just now?—Yes. He ________ his car when I met him.A．parked B．was parkingC．parks D．will park( )5. Eddie was sleeping ________ Millie was reading a magazine.A．until B．whileC．before D．after( )6. —Could you tell me what he said just now?—Sorry, I what was happening outside.A. had thoughtB. was thinkingC. thoughtD. think( )7. —I was at the cinema at nine yesterday evening. What about you?—I books.A. am readingB. was readingC. will readD. had read( )8. —What were you doing it was raining?—I was reading a book.A. beforeB. ifC. whileD. after( )9. Paul walked into the bedroom because his wife and baby were sleeping.A. silentB. silenceC. in silenceD. loudly( )10. During the past two years, several earthquakes in different places of the world.A. happenB. happenedC. take placeD. took placeⅠ. 完形填空(10分)Evening came. It was time for Mr. Bell to close his shop. He was checking his money. His son Tom, who was 15, had just gone outside to buy a piece of newspaper. Just then, a big man walked1the shop. He had a gun(枪)in his hand.When Tom came back, he could hear the man asking his father for2. Tom could see the gun in the man’s hand, but the man didn’t3or hear Tom.Tom hurried up to the street. He looked for the police, 4he didn’t find anyone. Then Tom saw an old baseball bat(棒球球棒)5in the street. “Maybe this will help, ”he thought. He ran6with it.His father was just giving some of the money to the man. The man was watching Tom’s father. Tom knew he could not 7long. “Now is the time. I must do it now. ”Tom went up to the man and knocked him down8the bat.Tom and his father then ran outside. This time they found the9and told them what had happened. The police10 went to the shop and caught the man.( )1. A. out of B. around C. into D. down( )2. A. paper B. water C. money D. food( )3. A. know B. catch C. meet D. see( )4. A. but B. so C. for D. or( )5. A. lies B. to lie C. lying D. is lying( )6. A. back B. over C. away D. past( )7. A. hold B. wait C. rest D. watch( )8. A. by B. from C. without D. with( )9. A. neighbors B. police C. friend D. children( )10. A. quick B. slow C. quickly D. slowlyⅠ. 阅读理解(10分)It wa raining heavily as I was walking up the hill towards the station at six o’clock on a Saturday morning. At this early hour there wasn’t much traffic and there weren’t many people. Just as I was crossing the road near the top of the hill, a car came around the corner. It was traveling very fast. Suddenly it hit a lamp post(路灯柱)and turned over.I ran to the car to help the driver at once. He was badly hurt and there was a lot of blood on his face. A young woman hurried into the station and phoned for an ambulance(救护车)while I took care of the driver. Many people came to see what happened. A policeman arrived a few minutes later and asked me a lot of questions about the accident. After a while the ambulance arrived and the driver was sent to the hospital.On Monday morning I went to the hospital to see the man. The doctor told me that he was much better, and he would leave the hospital after a few days’rest.( )1. Where did the accident happen?A. Near the school.B. Near the top of the hill.C. In the school.D. Near the hospital.( )2. What happened to the driver?A. He drove the car very well.B. His car hit a lamp post.C. His car turned over.D. Both B and C.( )3. Who hurried into the station and phoned for an ambulance?A. The writer.B. A policeman.C. Some people.D. A young woman.( )4. What did the policeman do?A. He took the driver away.B. He sent the driver to the hospital.C. He asked the writer a lot of questions.D. He phoned for an ambulance.( )5. Was the driver dead at last?A. Yes, he wasn’t.B. No, he was.C. Yes, he was.D. No, he wasn’t.Ⅴ.补全对话(10分)A. What were you doing at that time?B. When did you come to my classroom?C. Did you have a good time there?D. We were in the park at that time.E. She was singing and dancing with some girls.Where were you?B: 1A: At around three o’clock.B: Oh. 2We didn’t have any classes yesterday afternoon, so we went to the park to relax ourselves.A: 3B: Well, I was playing tennis with Jack.A: What was Mary doing?B: 4A: What about Linda?B: She was reading an interesting book. She likes reading, you know.A: Yes. 5B: Yes, we enjoyed ourselves very much.第Ⅰ卷(共60分)Ⅵ. 词汇运用(10分)(Ⅰ)根据句意及首字母或汉语提示完成单词。
2020-2021学年人教版八年级英语下册unit5单元测试卷及答案
八年级下英语unit5 What were you doing when therainstorm came？单元检测听力部分(20分)一、听力(本题有15小题，第一、二节每小题1分，第三节每小题2分；共计20分)第一节：听小对话，回答问题。
()1.What was Tom doing at six yesterday evening?A．He was doing the cleaning.B．He was doing the dishes.C．He was running.()2.What was the girl's mother doing?A．She was cleaning the room.B．She was shopping on the Internet.C．She was shopping in a supermarket.()3.What is the boy's brother going to be?A．A pianist.B．A computer programmer.C．An astronaut.()4.What is their father doing?A．He is taking a walk.B．He is playing soccer.C．He is cutting hair.()5.What's the boy's mother's hobby?A．Shopping. B．Reading. C．Running.第二节：听长对话，回答问题。
听下面一段较长的对话，回答6—7两小题。
()6.Why didn't Scott watch the football match?A．He studied for a test.B．He didn't want to watch it.C．He went to visit his parents.()7.Who won the match?A．Class 1. B．Class 2. C．Class 3.听下面一段较长的对话，回答8—10三小题。
人教部编最新版八下第五单元测试题(附答案)
最新人教部编版八年级下册语文第五单元测试卷及答案(时间：120分钟总分：120分)一、积累与运用(30分)1．下列加点字的注音完全正确的一项是( )(3分)A．颠簸．bǒ推搡． sang 灼．热zhuó怒不可遏．èB．蘸．水zhàn 黧．黑lí妩媚．mèi 大煞．风景shàC．眺．望tiào 懈．怠xiè巉．峻chán 接踵．而至zhǒngD．穹．顶qióng 虔．诚qián 拾．级shè纷至沓．来dá2．下列词语中没有错别字的一项是( )(3分)A．寒噤缭绕川流不息轻歌漫舞B．迂回喧哗震耳欲聋风云变幻C．演译蜿蜒目眩神迷瞬息万变D．棱角砾石名符其实历历在目3．下列语句中加点的成语使用有误的一项是( )A．炸弹在敌军中开了花，震耳欲聋．．．．，炸得敌人喊爹叫娘。
B．非洲一些国家，政局动荡，风云变幻．．．．。
C．近年来，全国各地道德模范络绎不绝．．．．，传播正能量，为全社会树立了榜样。
D．江君的画展开展后，参观的人接踵而至．．．．。
4．下列句子中没有语病的一项是（）A．许多游客听着瀑布欢呼呐喊，轰鸣声与欢笑声此起彼伏。
B．喜欢游泳的人大多有这种体验：不管天气很热，但是刚从水里出来时会感到有点凉，有时甚至还会打一下寒战。
C．洞内有我国首次发现的红玛瑙质构成的自然景观，景观的形成距今已有大约16亿多年的历史。
D．蓝天与雪山下的石头村庄交相辉映，伴着纳西古乐，村民用颇具特色的舞步抒发着简单的快乐。
5．根据上下文，填写在横线上的语句，排序最恰当的一项是（）了……①她的金色的柔光滟滟地泻在广裹的大地上，远近的房屋、树梢、山影、水痕，全都泛出了浅金色的光芒。
②她又是那么圆，圆得似乎要凸出来、蹦出来了。
③她低低的淳在澄净如洗的空中，离我那么近，仿佛一伸手便可以摘下。
④我狂喜地望着这神奇的月色，仿佛走进了金色的梦境，一切都是闪闪烁烁、蓬蓬勃勃的。