(北师大版)初中英语八年级上册 Unit 2单元测试(二)附答案
初中英语 八年级上册 1 / 7 Unit 2 Teams 单元测试
一、单项选择(共15小题;共45分)
从下面各题所给选项中,选择最佳选项。
1. — What do you want to be when you grow up?
— I want to be an ________ so that I can explore space.
A. actor B. engineer C. astronaut
2. A(n) ________ is a person who travels and works in spaceship.
A. astronomer B. astronaut C. scientist
3. — Why is science your favourite subject, Amy?
— I can do ________ and learn a lot from them.
A. advertisements B. experiences C. experiments
4. I want to be a(n) ________ and fly to space when I grow up.
A. actor B. astronaut C. pilot
5. He does not often make a ________ in front of so many people.
A. talk B. speech C. conversation D. dialogue
6. Could you please take the photos from my ________?
A. printer B. radio C. player D. camera
7. — What does the word “________” mean?
— A person who travels and works in spaceship.
A. astronomer B. astronaut C. scientist
8. A/An ________ is a test made in order to learn something.
A. jokeq B. experiment C. hobby
9. A ________ means a husband and a wife.
A. couple B. atmosphere C. habit
10. A(n) ________ is a person who travels and works in spaceship.
A. astronomer B. astronaut C. scientist
11. We usually do lots of interesting ________ in our physics class.
A. rules B. exhibitions C. experiments D. communications
12. It’s getting ________. Let’s stop the work and go home for dinner.
A. warm B. dirty C. dark D. old
13. My father will ________ home in two days.
A. return to B. go back to C. be back to D. return
14. People can do a lot of physics ________ in the Science Museum in London.
A. experiences B. experiments C. conditions D. pollution
从下面各题所给选项中,选择最佳选项。 初中英语 八年级上册 2 / 7 15. — Who invented(发明) ________?
— Cai Lun.
A. paper B. papers C. a paper D. a piece of paper
二、完形填空(共1小题;共30分)
阅读下面的短文,掌握其大意,然后从短文后各题所给的选项中,选择最佳选项。
Number sense is not the ability to count. It is the ability to recognize a change in number. Human beings are
born with this ability. Surprisingly, 16 show that many animals are, too. For example, many birds have good
number sense. If a nest(巢) has four eggs and you remove one, the bird will not notice. However, if you remove
two, the bird generally leaves. This means that the bird 17 the difference between two and three.
Another interesting test showed a bird’s 18 number sense. A man was trying to take a photo of a crow
that had a nest in a tower, but the crow always left when she saw him coming. The bird did not 19 until the
man left the tower. The man had an idea. He took another man with him to the tower. One man left and the other
stayed, but they weren’t successful in fooling the bird. The crow stayed away until the second man left, too. The
test was 20 with three men and then with four men. It was not until five men went into the tower and only
four left that they finally managed to take a photo.
How good is a human’s number sense? It’s not very good. For example, babies about fourteen months old
21 notice if something is taken away from a small group. But when the number goes beyond three or four, the
children are often very confused.
It seems that number sense is something we have in common with many animals in this world, and that our
human ability is not much better than a cow’s.
16. A. ideas B. plans C. experiments D. proverbs
17. A. went out B. found out C. looked out D. turned out
18. A. forgetful B. friendly C. amazing D. silly
19. A. escape B. return C. fly D. sing
20. A. repeated B. mentioned C. noticed D. produced
21. A. never B. rarely C. properly D. usually
三、阅读理解-阅读n选n(共2小题;共30分)
阅读短文,根据短文内容,从短文后的五个选项中选出能填入空白处的最佳选项。每个选项只能用一次。
22. Way to make a great first impression
You’ve heard it a million times already, but it really does take but a few seconds to make that all-important
first impression(印象). Here are some easy ways for you to impress your classmates or teachers.
•________.
Before you shake hands with somebody, make sure that your hands are clean. The handshake should not be
too strong or weak. Most people use their right hands, unless they have a reason to use the left ________.
•Be on time 初中英语 八年级上册 3 / 7 When meeting someone for the first time, arriving on time is as important as breathing. You may have an
excuse, but that will leave the person who hardly knows you with a bad impression. ________. It’s better to be
hanging around the place than be stuck in traffic.
•Introduce yourself and ask for names
Make sure you properly introduce yourself. Ask for their names in a polite way. ________. This will
北师大版八年级上册数学 第二章 实数 单元测试卷(Word版,含答案)
第 1 页 共 8 页 北师大版八年级上册数学 第二章 实数 单元测试卷
一、选择题(每小题3分,共30分)
1.下列四个选项中,属于无理数的是 ( )
A.3.1415926 B.3.21
C.√93 D.-√116
2.下列二次根式中,是最简二次根式的是 ( )
A.√8 B.√10
C.√16 D.√27
3.下列说法不正确的是 ( )
A.125的平方根是±15 B.(-4)3的立方根是-4
C.√4的算术平方根是2 D.-√273=-3
4.下列计算正确的是 ( )
A.√52=±5 B.√2÷√3=√63
C.2√3×2√3=4√3 D.√2+√3=√5
5.估计√153的大小在 ( )
A.2与3之间 B.3与4之间
C.4与5之间 D.5与6之间
6.设a=(-√3)2,b=√(-3)2,则a,b的大小关系是 ( )
A.a=b B.a>b C.a
7.下列各实数比较大小,其中正确的是 ( )
第 2 页 共 8 页 A.√7<2.5 B.√16<2.2 C.1π>1√5 D.√3-13<13
8.已知a,b互为倒数,c,d互为相反数,则-√𝑎𝑏3+√𝑐+𝑑+1的平方根为 ( )
A.1 B.-1 C.0 D.±1
9.若x+y=3+2√2,x-y=3-2√2,则√𝑥2-𝑦2的值为 ( )
A.4√2 B.1 C.6 D.3-2√2
10.已知a,b,c在数轴上的对应点的位置如图所示,则化简√𝑎2-|a+c|+√(𝑐-𝑏)2的结果是 ( )
A.2c-b B.-b C.b D.-2a-b
二、填空题(每小题4分,共24分)
11.计算:|√3-2|= .
12.已知a=√3,则a的倒数是 .
13.已知√2.021≈1.422,√20.21≈4.496,则√2021≈ .
14.√643的平方根是 .
2019年秋北师大版八年级数学上册第二单元测试卷2套试题
第二章单元测试卷第二章单元测试卷
[时间:120分钟 分值:150分]
A卷(共100分)
一、选择题(共10个小题,每小题3分,共30分)
1.下面四个数是无理数的为( )
A.0 B.-3.141 5……
C.227
D.9
2.[2018·包头]计算-4-|-3|的结果是( )
A.-1 B.-5
C.1 D.5
3.[2018·南充]下列实数中,最小的数是( )
A.-2 B.0 C.1 D . 38
4.[2018·曲靖]下列二次根式中能与23合并的是( )
A. 8 B. 13 C. 18 D. 9
5.计算2×8+3-27的结果为( )
A. -1 B. 1 C.4-33 D. 7
6.按如图所示的程序计算,若开始输入的n值为2,则最后输出的结果是( )
A.14 B.16
C.8+52 D.14+2
7.[2018春·自贡期末]实数a,b在数轴上对应点如图所示,则化简b2+(a-b)2-|a|的结果是( )
A.2a
B.2b C.-2b D.-2a
8.三个实数-6,-2,-7之间的大小关系是( )
A.-7>-6>-2 B.-7>-2>-6
C.-2>-6>-7 D.-6<-2<-7
9.若(m-1)2+n+2=0,则m+n的值是( )
A.-1 B.0 C.1 D.2
10.[2018·十堰]如图是按一定规律排成的三角形数阵,按图中的数阵排列规律,第9行从左至右第5个数是( )
… … …
A.210 B.41 C.52 D.51
北师大版(2024版)七年级上册数学 第2章 有理数及其运算单元测试卷 ( 含答案)
北师大版(2024版)七年级(上)数学单元测试卷
第2章《有理数及其运算》
满分120分 时间100分钟题号
得分
一、选择题(共10题;共30分)
1.−110的绝对值是( )
A.110B.10C.−110D.−10
2.如果“亏损5%”记作−5%,那么+3%表示( )
A.多赚3%B.盈利−3%C.盈利3%D.亏损3%
3.如图,数轴上点P表示的数是( )
A.-1B.0C.1D.2
4.2023年3月13日,十四届全国人大一次会议闭幕后,国务院总理李强在答记者问时表示,我们
国家现在适合劳动年龄人口已经有近9亿人,每年新增劳动力是1500万人,人力资源丰富仍然是中
国一个巨大优势或者说显著优势.其中1500万用科学记数法表示为( )A.1.5×103B.1500×104C.1.5×106D.1.5×107
5.如图,数轴上的点A,B,C,D表示的数与−13互为相反数的是( )
A.AB.BC.CD.D
6.下列各式中,计算结果最大的是( )
A.3+(−2)B.3−(−2)C.3×(−2)D.3÷(−2)
7.式子−2−1+6−9有下面两种读法;
读法一:负2,负1,正6与负9的和;
读法二:负2
减
1加6减9.
则关于这两种读法,下列说法正确的是( )A.只有读法一正确B.只有读法二正确C.两种读法都不正确D.两种读法都正确
8.用“▲”定义一种新运算:对于任何有理数𝑎和𝑏,规定𝑎▲𝑏=𝑎𝑏+𝑏2,如2▲3=2×3+32=15,
则(−4)▲2的值为( )A.−4B.4C.−8D.8
9.已知两个有理数𝑎,𝑏,如果𝑎𝑏<0且𝑎+𝑏>0,那么( )
A.𝑎>0,𝑏>0B.𝑎>0,𝑏<0
C.𝑎,𝑏同号D.𝑎,𝑏异号,且正数的绝对值较大
10.已知有理数a,b,c在数轴上的位置如图所示,则𝑎2|𝑎2|−|𝑏|𝑏−𝑐|𝑐|=( )
A.−1B.1C.2D.3二、填空题(共6题;共18分)11.既不是正数也不是负数的数是 .
(北师大版(三年级起点))小学英语六年级上册 Unit 2单元测试试卷02及答案
Unit 2 An Accident 单元测试
听力部分(30分)
一、听录音,选出相对应的图片。(10分)
( )1. A. B.
( )2. A. B.
( )3. A. B.
( )4. A. B.
( )5. A. B.
二、听录音,选出正确的答语。(10分)
( )1. A. I did my homework.B. I was at home.
( )2. A. I cleaned the house.B. I was in the park.
( )3. A. Yes, I was.B. Yes, he was.
( )4. A. They played football.B. They were at school.
( )5. A. Yes, they are.B. Yes, they were.
三、听录音,按听到的顺序为下列图片排序。(10分)
( )( )( )( )(
)笔试部分(70分)
四、看图,从方框中选择正确的单词填空。(10分)
1. Kate ________ a cake last Sunday.
2. My mother ________ shopping last week.
3. Sam ________ up early this morning.
4. Ken ________ football yesterday.
5. Lingling ________ an ice cream yesterday.
五、为下列句子找到相应的图片。(10分)
A.B.C.D.E.
( )1. My mother was a teacher before.
( )2. My sister did her homework last night.
( )3. Bill swam last Sunday.
( )4. Ken played football yesterday.
( )5. Bob watched TV last Saturday.
八年级英语上册第一单元测试题及答案
Word文档
1 / 1
八年级英语上册第一单元测试题及答案
八年级〔英语〕是在为〔中考〕打基础,用最有效的方法去学英语,才是你胜利的最大保障。多做一套测试题,让你的英语成果更进一步。以下是学习啦我为你整理的八年级英语上册第一单元测试题及答案,希望能帮到你。
八年级英语上册第一单元测试题答案
1-5 CADCB 6-10 BADBC 11-15 DACCB 16-20 DDCAB
21-25 ACBDB 26-30 ACDAA 31-35 BADBC 36-40 CADBA
41- 45 BBCBD 46-50 CABCD 51-55 ABDCA 56-60 EBDGC
61. health 62. twice 63. to drink 64. students 65. unhealthy
66. eating 67. surfing 68. skateboarding 69. is 70. people
71. healthy 72. be 73. ( to ) get 74. exercises 75. different
76. How; often; go; shopping 77. three; or; four; times 78. wants; him; to; drink
79. think; a; healthy; lifestyle 80. Most; students; every; day
81. How; often 82. never; watches 83. are; doing
84. didnt do 85. Is; any
八、书面表达(略)
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初中英语 八年级下册 1 / 11 Unit 1 Technology and the Future 单元测试
听力部分(共20分)
一、听长对话及后面的问题,根据对话内容选择每个问题的最佳答案,对话和问题读两遍。(共5分,每小题1分)
1. A. He has a cold. B. He has a fever. C. He has a headache.
2. A. Playing computer games. B. Sleeping all day. C. Dreaming all night.
3. A. Keeping warm. B. Having a warm bath. C. Drinking more water.
4. A. Half an hour a day. B. Three times a day. C. Once a day.
5. A. Relax a little. B. Take more pills once. C. Go to bed early.
二、听短对话和问题,选择符合每个问题的正确答案,每段对话和问题读两遍。(共5分,每小题1分)
6. A. Football. B. Table tennis. C. Basketball.
7. A. Cakes. B. Fish. C. Vegetables.
8. A. Cook. B. Teacher. C. Doctor.
9. A. Goldfish. B. Elephant. C. Tortoise.
10. A. No photos. B. No smoking. C. No parking.
三、听下面的短文,短文后有5个小题,从题中所给的A、B、C三个选项中选出最佳选项,短文读两遍。(共5分,每小题1分)
(北师大版)初中英语八年级下册Unit3单元测试01含答案解析
加油!有志者事竟成
1答卷时应注意事项
1、拿到试卷,要认真仔细的先填好自己的考生信息。
2、拿到试卷不要提笔就写,先大致的浏览一遍,有多少大题,每个大题里有几个小题,有什么
题型,哪些容易,哪些难,做到心里有底;
3、审题,每个题目都要多读几遍,不仅要读大题,还要读小题,不放过每一个字,遇到暂时弄
不懂题意的题目,手指点读,多读几遍题目,就能理解题意了;容易混乱的地方也应该多读几遍,
比如从小到大,从左到右这样的题;
4、每个题目做完了以后,把自己的手从试卷上完全移开,好好的看看有没有被自己的手臂挡住
而遗漏的题;试卷第1页和第2页上下衔接的地方一定要注意,仔细看看有没有遗漏的小题;
5、中途遇到真的解决不了的难题,注意安排好时间,先把后面会做的做完,再来重新读题,结
合平时课堂上所学的知识,解答难题;一定要镇定,不能因此慌了手脚,影响下面的答题;
6、卷面要清洁,字迹要清工整,非常重要;
7、做完的试卷要检查,这样可以发现刚才可能留下的错误或是可以检查是否有漏题,检查的时
候,用手指点读题目,不要管自己的答案,重新分析题意,所有计算题重新计算,判断题重新判断,
填空题重新填空,之后把检查的结果与先前做的结果进行对比分析。
亲爱的朋友,你们好!经过两个月的学习,你们一定有不小的收获吧,用你的自信和智慧,认真答
题,相信你一定会闯关成功。相信你是最棒的!初中英语八年级下册1/6Unit3FestivalsandHolidays单元测试
听力部分(共20分)
一、这一大题共有5个小题,每小题你将听到一组对话。请你从每小题所给的A、B、C三幅图片中,选出
与你所听到的信息相关联的一项。每组对话读一遍。(共5分,每小题1分)1.Whatdoesthemanwanttobuy?
ABC
2.Howdoesthemangotohishometowneveryyear?
ABC
3.WhatisPeter’sbrother?
ABC
4.WhichisTim’sfavouriteseason?
北师大版八年级数学上册《第二章实数》单元测试卷及答案
第 1 页 共 4 页 北师大版八年级数学上册《第二章实数》单元测试卷及答案
学校:___________班级:___________姓名:___________考号:___________
基础练习
一、平方根、算术平方根、立方根
1.100的算术平方根是( B )
A.-10 B.10
C.±10 D.√𝟏𝟎
2.下列计算正确的是( D )
A.√𝟗=±3 B.√−𝟗=-3
C.√(−𝟑)𝟐=-3 D.√(−𝟑)𝟐=3
3.√𝟔𝟒的立方根是2.
4.一个正数的两个平方根分别为2a-1和 a+7,则a的值为-2,这个正数为25.
二、无理数、估算
5.在以下实数π𝟑,-√𝟐𝟐,1.414,𝟏𝟔中无理数有( C )
A.4个 B.3个
C.2个 D.1个
6.若m=√𝟒+√𝟑,则m的取值范围是( B )
A.2<m<3 B.3<m<4
C.4<m<5 D.5<m<6
三、实数 第 2 页 共 4 页 7.如果√𝟐-1是a的相反数,那么a的值是( A )
A.1-√𝟐 B.1+√𝟐
C.-√𝟐 𝐃.√𝟐
8.如图,面积为5的正方形ABCD的顶点A在数轴上,点A表示的数为1,若AD=AE,则点E表示的数为1-√𝟓.
四、二次根式的性质及相关概念
9.下列式子中,属于最简二次根式的是( B )
A.√𝟗 𝐁.√𝟓
C.√𝟏𝟑 𝐃.√𝟏𝟐
10.已知x,y满足√𝒙−𝟐+(y+1)2=0,那么x-y的平方根是( A )
A.±√𝟑 𝐁.√𝟑
C.1 D.±1
五、二次根式的运算
11.下列二次根式中,能与√𝟓合并的二次根式是( A )
A.√𝟐𝟎 𝐁.√𝟑𝟎
C.√𝟒𝟎 𝐃.√𝟓𝟎
12.已知x1=√𝟑+√𝟐,𝒙𝟐=√𝟑−√𝟐,则𝒙𝟏𝟐−𝒙𝟐𝟐=2024.
13.计算:
(1)(𝟐√𝟑−𝟏)2+(√𝟑+𝟐)(√𝟑−𝟐); 第 3 页 共 4 页
北师大八年级上册数学《第二章实数》单元测试卷(含答案解析)
精品 Word 可修改 欢迎下载
八年级上学期 第二章 实数 单元测试卷
数 学 试 卷
考试时间:120分钟;满分:150分
学校:___________姓名:___________班级:___________考号:___________
一.选择题(共10小题,满分40分,每小题4分)
1.(4分)下列实数为无理数的是( )
A.﹣5 B.27
C.0
D.π
2.(4分)若1a+|b+2|=0,那么a﹣b=( )
A.1 B.﹣1 C.3 D.0
3.(4分)四个实数﹣5,﹣3,0,1中最小的是( )
A.﹣5 B.﹣3 C.0 D.1
4.(4分)下列正确的有( )
①若x与3互为相反数,则x+3=0;②﹣21的倒数是2;③|﹣15|=﹣15;④负数没有立方根.
A.①②③④ B.①②④ C.①④ D.①
5.(4分)|1﹣2|=( )
A.1﹣2 B.2﹣1 C.1+2 D.﹣1﹣2
6.(4分)如图,数轴上的点A表示的数是1,OB⊥OA,垂足为O,且BO=1,以点A为圆心,AB为半径画弧交数轴于点C,则C点表示的数为( )
A.﹣0.4 B.﹣2 C.1﹣2 D.2﹣1
7.(4分)若式子212mm有意义,则实数m的取值范围是( )
A.m>﹣2 B.m>﹣2且m≠1 C.m≥﹣2 D.m≥﹣2且m≠1
8.(4分)下列计算正确的是( ) 精品 Word 可修改 欢迎下载
A.(﹣3a2)•2a3=﹣6a6 B.a6÷a2=a3
C.ab=a•b
D.(﹣ab﹣1)2=a2b2+2ab+1
9.(4分)下列各组二次根式中,不是同类二次根式的是( )
A.5.0与81 B.ab与ba C.yx2与2xy D.52a与32a
10.(4分)化简yxyx(x≠y,且x、y都大于0),甲的解法;yxyx=yxyxyxyx=x﹣y;乙的解法:yxyx=yxyxyx=x﹣y,下列判断正确的是( )
新北师大版八年级上册一次函数单元测试试题以及答案
1 八年级上册一次函数练习试题
1、一次函数的图象过点M(3,2),N( —1, —6)两点.
(1) 求函数的表达式;
⑵画出该函数的图象•
(3)与x、y交点坐标分别是多少?
(4)与坐标轴围成三角形面积是多少?
2、在直角坐标系中,一条直线经过A(﹣1,5),P(﹣2,a),B(3,﹣3)三点.
(1)求a的值;
(2)设这条直线与y轴相交于点D,求△OPD的面积.
2 3、已知一次函数的图象过点A(2,—1)和点B,其中点B是另一条直线y=—x+3与y轴的交点,求这个一次函数的表达式
4、已知直线I与直线y=2x+1的交点的横坐标为2,与直线y= —x+8的交点的纵坐标为—7,求直线的表达式。
3 5、某地出租车计费方法如图,x(km)表示行驶里程,y(元)表示车费,请根据图象解答下列问题:
(1)该地出租车的起步价是 元;
(2)(2)当x>2时,求y与x之间的函数关系式; (
(3)若某乘客有一次乘出租车的里程为18km,则这位乘客需付出租车车费多少元?
4 6、小明在暑期社会实践活动中,以每千克0.8元的价格从批发市场购进若干千克西瓜到市场上去销售,在销售了40千克西瓜之后,余下的每千克降价0.4元,全部售完.销售金额与售出西瓜的千克数之间的关系如图4所示.请你根据图象提供的信息完成以下问题:
(1) 求降价前销售金额y(元)与售出西瓜x(千克)之间的函数关系式.
(2) 小明从批发市场共购进多少千克西瓜?
(3)小明这次卖瓜赚了多少钱?
5 7、已知y与x+1成正比例关系,当x=2时,y=1,求当x=-3时y 的值?
8、求图象经过点(2,-1),且与直线y=2x+1平行的一次函数的表达式.
6
9、某移动通讯公司开设了两种通讯业务:“全球通”使用者先交50元月租费,然后每通话1分,再付电话费0.4元;“神州行”使用者不交月租费,每通话1分,付话费0.6元(均指市内通话)若1个月内通话x分,两种通讯方式的费用分别为y1元和y2元.
