七年级寒假测试

2024-05-08

七年级寒假测试（精选6篇）

篇1：七年级寒假测试

寒假乐园：七年级上册政治寒假作业测试题

1.小丽刚刚升入七年级，下面是她对初中生活的认识，其中正确的有

①七年级是人生成长道路上的新起点 ②新的环境、新的同学、新的集体，给了我们新的憧憬 ③七年级学习紧张，没有小学时轻松 ④新的班集体，需要我们共同维护

A.①②③ B.①②④ C.②③④ D.①②③④

2.进入中学后，每位同学都想在一个良好的班集体中学习、生活。下列同学的说法不利于所在班级成为良好班集体的是

A.各尽所能，发挥所长，奉献集体 B.确立共同的目标，并为之不懈奋斗

C.团结协作，互助前行 D.“各扫门前雪”，只要每个人都能独立处理好个人的事情就行

3.彩虹的美丽在于它的七色光彩，班级的美丽在于我们每个人的，每个人都能在班级中找到自己的位置，谁都无法替代。

A.共性 B.同一性 C.独特性 D.普遍性

4.每个人都应成为“学习的管理者”。在学习过程中应该 ①学会自主学习②提高学习效率 ③科学安排时间 ④投入“题海战术”

A.①②③ B.①②④ C.①③④ D.②③④

5.小明在日记中写道：每次遇到一个难题，就苦思冥想，甚至睡不好觉;但是经过努力解决了，那种愉悦是不能言表的。他的这句话说明

A.学习是无法摆脱的 B.学习是非常辛苦的 C.学习只会令我们感到快乐 D.学习是苦乐交织的 6.下列学习方法中，值得我们借鉴的是

A.遇到难题立即问老师，不必过多思考 B.学习任务到了最后时刻再动手，不必操之过急

C.学习有计划，首尾兼顾 D.自主学习就是完全摆脱对父母和老师的依赖，自学成才

7.生命的成长过程是漫长的，结束一个生命是瞬间的。这启示人们对待生命应该

A.相互排挤 B.相互竞争 C.相互尊重，相互关爱 D.相互敌视

上文就是给您带来的寒假乐园：七年级上册政治寒假作业测试题，希望大家及时注意并了解相关动态！!

篇2：七年级寒假测试

26.晋朝时，有一位叫周处的强壮青年在乡里横行霸道。一天，他见一位老人在充实的粮仓边唉声叹气，便问何故。老人说：“乡里三害，南山猛虎，长桥蛟龙，再加上你，祸害乡里，搅扰民生。”周处决心除掉三害，他杀猛虎，屠蛟龙，自己则外出求学，注意品德修养，最终成为国家的栋梁。

(1)周处通过什么途径进行自我评价?(3分)

(2)自我认识的途径还有哪些?(6分)

(3)周处最终成为国家栋梁的经历给了我们什么启示?(5分)

27.材料一：小李是集邮爱好者。一天，在班级信箱中，他看见寄给同学小王的信上有一张自己寻觅已久的精美邮票。他犹豫一下，还是把邮票撕了下来，珍藏到自己的集邮册内。

材料二：寒假里，陈东一家在哈尔滨拍了好多冰灯照片。回家后，陈东把照片分类整理成册，并称之为“冰城之旅”。陈冬把这本相册带到学校，课外活动时间与同学一起欣赏。

材料三：王兵是一个电脑爱好者，但他只玩游戏。他每天回家先不写作业，而是打开电脑玩个痛快，第二天到学校抄别人的作业。

材料四：一天下午放了学，一向好奇心重的冉冉看到路边围着一群人，他连忙走过去看看，原来是有人在兜售“口袋书”。他拿起一本一看，不禁面红耳赤，里面净是一些不健康的内容……

(1)材料一、二、三的哪些行为表现出高雅的情趣，哪些行为表现出庸俗的情趣?为什么?(6分)

(2)中学生应该怎样培养高雅的生活情趣?(8分)

(3)请你为材料四设计两个不同的结局。(4分)

28.成都商报讯：省高院在自贡中院二审公开审理了一起故意杀人案。被告人田良在家中残忍杀害了亲生父亲及儿子，并声称之所以杀人，是因为自己吸毒后产生幻觉，在一种“人体芯片”的操纵下，犯下罪行。

(1)青少年应怎样对待毒品?(2分)

(2)除毒品外，我们身边还存在哪些不良诱惑?(6分)

(3)我们应怎样对待这些不良诱惑?(10分)

答案

26(1)周处是从他人对自己的态度和评价中认识自己的。(3分)

(2)自我认识途径还有：通过自我观察认识自己、通过集体了解自己。(6分)

(3)我们要善于从他人那里了解自己，并且以虚心和诚恳的态度征求他人对自己的批评和意见，落实在行动上。(5分)

27(1)材料一、三两种行为表现出庸俗的生活情趣。因为，集邮虽然是高雅的生活情趣，但如果不经过他人的同意擅自撕取他人信封上的邮票，就是一种不道德的行为;喜欢电脑是高雅的生活情趣，但是只迷恋于玩游戏，就是庸俗的生活情趣。材料二中陈冬的行为是一种健康、向上、文明的行为，表现了高雅的生活情趣。(6分)

(2)中学生应从以下四个方面培养高雅的生活情趣：乐观幽默的生活态度，是陶冶高雅生活情趣的重要条件;培养正当的兴趣、爱好和强烈的好奇心，是陶冶高雅生活情趣的基础;丰富的文化生活，是陶冶高雅生活情趣的重要途径;最后就是提升情趣，陶冶情操。( 8分)

(3)结局一：冉冉没有把握好自己的好奇心，染上了不良嗜好，甚至沉迷于庸俗的情趣中，影响了他的健康成长。结局二：冉冉抵制了庸俗情趣的诱惑，正确把握了自己的好奇心。(4分)

28(1)远离毒品、拒绝毒品。(2分)

(2)黄色网站、暴力游戏、赌博、酗酒、吸烟等。(6分)

篇3：七年级数学期末复习测试题

1. 实数16的平方根是( )

A. 4 B. ± 4 C. 8 D. ± 8

2. 为了了解某校七年级400名学生的体重情况,从中抽取50名学生的体重进行统计分析. 在这个问题中,总体是指( )

A. 400 B. 被抽取的50名学生

C. 400名学生的体重D. 被抽取50名学生的体重

3. 如图,在一张透明的纸上画一条直线l,在l外任取一点P并折出过点P且与l垂直的直线. 这样的直线能折出( )

A. 0 条

B. 1 条

C. 2 条

D. 3 条

4. 如图,将△ABC沿BC方向平移2cm得到△DEF,若△ABC的周长为16cm,则四边形ABFD的周长为( )

A. 16cm

B. 18cm

C. 20cm

D. 22cm

5. 若方程组其中M与N是被遮盖的两个数,那么M、N分别为( )

A. 4,2 B. 1,3 C. 2,3 D. 2,4

6. 在直角坐标系中,点P( 6 - 2x,x - 5) 在第四象限,则x的取值范围是( )

A. 3 < x < 5 B. x > 5 C. x < 3 D. - 3 < x < 5

7. 如图,把长方形ABCD沿EF对折后使两部分重合,若∠1 = 50°, 则∠AEF = ( )

A. 110°

B. 115°

C. 120°

D. 130°

8. 某种出租车的收费标准: 起步价7元( 即行驶距离不超过3千米都需付7元车费) ,超过3千米后,每增加1千米,加收2. 4元( 不足1千米按1千米计) . 某人乘这种出租车从甲地到乙地共付车费19元,那么甲地到乙地路程的最大值是( )

A. 5千米B. 7千米C. 8千米D. 15千米

9. 如图,汽车在东西向的公路l上行驶,途中A,B,C,D四个十字路口都有红绿灯,AB之间的距离为800m,BC为1000m,CD为1400m, 且l上各路口的红绿灯设置为: 同时亮红灯或同时亮绿灯,每次亮红 ( 绿) 灯的时间相同,红灯亮的时间与绿灯亮的时间也相同. 若绿灯刚亮时,甲汽车从A路口以每小时30千米的速度沿l向东行驶,同时乙汽车从D路口以相同的速度沿l向西行驶,这两辆汽车通过四个路口时都没有遇到红灯,则每次绿灯亮的时间可能设置为( )

A. 50 秒 B. 45 秒 C. 40 秒 D. 35 秒

10. 如图,所有正方形的中心均在坐标原点,且各边与x轴或y轴平行,从内到外,它们的边长依次为2,4,6,8,…,顶点依次用A1,A2, A3,A4,…表示,则顶点A55的坐标为( )

A. ( 13,13)

B. ( - 13,- 13)

C. ( 14,14)

D. ( - 14,- 14)

二、填空题(每题3分,共24分)

11. 已知长方形ABCD在平面直角坐标系中的位置如图所示,将长方形ABCD沿x轴向左平移到使点C与坐标原点重合后,再沿y轴向下平移到使点D与坐标原点重合,此时点B的坐标是___.

12. 某校初中七年级共有学生400人,为了了解这些学生的视力情况,抽查20名学生的视力,对所得数据进行整理. 在得到的条形统计图中,各小组的百分比之和等于___,若某一小组的人数为4人,则该小组的百分比为___.

13. 如图,如果∠1 = 50°,∠2 = 100°,那么 ∠3的同位角等于___,∠3的内错角等于___,∠3的同旁内角等于__.

14. 数轴上,表示实数的点分别为B,A,已知点B是A、C的中点,则点C对应的实数是___.

15. 下列说法: 1无限小数是无理数; 25的算术平方根是327的立方根是3; 4使式子有意义的x的取值范围是x≥ - 1; 5与数轴上的点一一对应的数是有理数. 其中正确的是___( 填写序号) .

16. 若关于x,y的二元一次方程组的解也是二元一次方程x + 3y = 7的解,则k的值为___.

17. 按下列程序进行运算( 如图)

规定: 程序运行到“判断结果是否大于244”为一次运算. 若x = 5,则运算进行___次才停止; 若运算进行了5次才停止,则x的取值范围是___.

18. 当m =___时,方程组的解x和y都是整数.

三、解答题(共66分)

19. 已知:是m + 3的算术平方根,是n-2的立方根,试求(M-N)2.

20. 老师布置了一个探究活动: 用天平和砝码测量壹元硬币和伍角硬币的质量( 注: 同种类的每枚硬币质量相同) . 聪明的孔明同学经过探究得到以下记录:

请你用所学的数学知识计算出一枚壹元硬币多少克? 一枚伍角硬币多少克?

21. 如图,六边形ABCDEF的内角都相等,∠DAB = 60°.

( 1) 证明: AB∥DE;

( 2) 写出图中其它平行的线段( 不要求证明) .

22. 阅读材料: 解分式不等式3x + 6/x - 1< 0.

解: 根据实数的除法法则: 同号两数相除得正数,异号两数相除得负数,因此,原不等式可转化为:

解1,得无解; 解2,得 - 2 < x < 1,

所以原不等式的解集是 - 2 < x < 1.

请仿照上述方法解下列分式不等式:

( 1)x - 4/2x + 5≤0.

( 2)x + 2/2x - 6> 0.

23. 某园林部门决定利用现有的349盆甲种花卉和295盆乙种花卉搭配A、B两种园艺造型共50个,摆放在迎宾大道两侧. 已知搭配一个A种造型需甲种花卉8盆,乙种花卉4盆; 搭配一个B种造型需甲种花卉5盆,乙种花卉9盆.

( 1) 某校七年级某班课外活动小组承接了这个园艺造型搭配方案的设计,问符合题意的搭配方案有几种? 请你帮助设计出来.

( 2) 若搭配一个A种造型的成本是200元,搭配一个B种造型的成本是360元,试说明( 1) 中哪种方案成本最低,最低成本是多少元?

24. 目前,中学生厌学现象已引起全社会的广泛关注. 为了有效地帮助学生端正学习态度,让学生以积极向上的心态来面对今后的学习生活,某校领导针对学生的厌学原因设计了调查问卷. 问卷内容分为: A、迷恋网络; B、家庭因素; C、早恋; D、学习习惯不良; E、认为读书无用. 然后从本校有厌学倾向的学生中随机抽取了若干名学生进行了调查( 每位学生只能选择一种原因) ,把调查结果制成了如图所示的两个统计图,直方图中从左到右前三组的频数之比为9∶ 4∶ 1,C小组的频数为5. 请根据所给信息回答下列问题:

( 1) 本次共抽取了多少名学生参加测试?

( 2) 补全直方图中的空缺部分; 在扇形统计图中A区域、C区域、D区域所占的百分比分别为___、___、____.

( 3) 请你根据调查结果和对这个问题的理解,简单地谈谈你自已的看法.

25. 如图1,E是直线AB,CD内部一点,AB∥CD,连接EA,ED.

( 1) 探究猜想:

1若∠A = 30°,∠D = 40°,则∠AED等于多少度?

2若∠A = 20°,∠D = 60°,则∠AED等于多少度?

3猜想图1中∠AED,∠EAB,∠EDC的关系并证明你的结论.

( 2) 拓展应用:

如图2,射线FE与矩形ABCD的边AB交于点E,与边CD交于点F,1234分别是被射线FE隔开的4个区域( 不含边界,其中区域3、4位于直线AB上方,P是位于以上四个区域上的点,猜想: ∠PEB, ∠PFC,∠EPF的关系( 不要求证明) .

26. 如图,长方形OABC中,O为平面直角坐标系的原点,A、C两点的坐标分别为( 3,0) ,( 0,5) ,点B在第一象限内.

( 1) 如图1,写出点B的坐标.

( 2) 如图2,若过点C的直线CD交AB于点D,且把长方形OABC的周长分为3∶ 1两部分,求点D的坐标.

( 3) 如图3,将( 2) 中的线段CD向下平移2个单位,得到C'D',试计算四边形OAD'C'的面积.

27. 如图,已知直线AB∥CD,∠A = ∠C = 100°,E、F在CD上,且满足∠DBF = ∠ABD,BE平分∠CBF.

( 1) 直线AD与BC有何位置关系? 请说明理由.

( 2) 求∠DBE的度数.

( 3) 若平行移动AD,在平行移动AD的过程中,是否存在某种情况,使∠BEC = ∠ADB? 若存在,求出其度数; 若不存在,请说明理由.

28. 建华小区准备新建50个停车位,以解决小区停车难的问题. 已知新建1个地上停车位和1个地下停车位需0. 5万元; 新建3个地上停车位和2个地下停车位需1. 1万元.

( 1) 该小区新建1个地上停车位和1个地下停车位各需多少万元?

( 2) 若该小区预计投资金额超过10万元而不超过11万元,则共有几种建造方案?

( 3) 已知每个地上停车位月租金100元,每个地下停车位月租金300元. 在( 2) 的条件下,新建停车位全部租出. 若该小区将第一个月租金收入中的3600元用于旧车位的维修,其余收入继续兴建新车位, 恰好用完,请直接写出该小区选择的是哪种建造方案?

参考答案:

一、1. B. 点拨: 因为(±4)2= 16,

所以16的平方根是 ± 4,故应选B;

2. C;

3. B;

4. C. 点拨: 根据题意,

将周长为16cm的△ABC沿BC向右平移2cm得到△DEF,

∴ AD = CF = 2cm,BF = BC + CF = BC + 2cm,DF = AC;

又∵ AB + BC + AC = 16cm,

∴ 四边形ABFD的周长 = AD + AB + BF + DF = 2 + AB + BC + 2 + AC = 20cm.

故应选C;

5. A;

6. C;

7. B;

8. C. 点拨: 设此人从甲地到乙地经过的路程为x千米,

则根据题意,得2. 4( x - 3) ≤19 - 7,

即2. 4x - 7. 2≤12,所以2. 4x≤19. 2,

解得x≤8,因此甲地到乙地路程的最大值为8;

9. D. 点拨: ∵ 汽车的速度为30000/3600=25/3m/s,

∴ 甲汽车通过AB、BC、CD三条道路的时间依次为96s、120s、168s;

乙汽车通过DC、CB、BA三条道路的时间依次为168s、120s、96s.

设每次绿灯亮的时间设置为xs,

由题意,得

13x > 96;

26x < 96 + 120;

37x > 96 + 120;

45x > 168;

58x < 168 + 120;

69x > 168 + 120;

710x < 168 + 120 + 96;

811x > 168 + 120 + 96;

由这八个不等式组成的不等式组的解集为34. 9 < x < 36,

故x = 35,故应选D;

10. C. 点拨:

因为A1,A2,A3,A4的坐标分别为

( 1,1) ,( - 1,1) ,( - 1,- 1) ,( 1,- 1) ;

A5,A6,A7,A8的坐标分别为

( 2,2) ,( - 2,2) ,( - 2,- 2) ,( 2,- 2) ;

A9,A10,A11,A12的坐标分别为

( 3,3) ,( - 3,3) ,( - 3,- 3) ,( 3,- 3) ;

通过这些数可得出规律: 每4个数一循环,余数是几就与第几个数的坐标符号是一样的,55 ÷ 4 = 13…3,所以符号应该与第3个一样,即横、纵坐标都为负数,坐标是13是最后一个数应该为52,坐标是14的最后一个数应该为56,所以A55的横、纵坐标都应该是14,即顶点A55的坐标为( 14,14) . 故应选C.

二、11. ( - 5,- 3) ;

12. 1、20% . 点拨: 各小组的百分比之和等于1,该小组的百分比为: 4 ÷ 20 = 20% ;

13. 80°、80°、100°.

点拨: 如图,因为∠2 = 100°,

所以∠3的同位角∠4 = 180° - 100° = 80°,

∠3的内错角∠5 = ∠4 = 80°,

∠3的同旁内角∠6 = ∠2 = 100°;

14. 4 - . 点拨: AB之间的距离为:,因为点B是A、C的中点,所以点C对应的实数为:

15. 34. 点拨: 无限循环小数是有理数,所以1错误; 5的算术平方根是,所以2错误; 27的立方根是3,所以3正确; 要使有意义,必须x + 1≥0,即x≥ - 1,所以4正确; 与数轴上的点一一对应的数是实数,所以5错误;

16. - 1.

点拨: 解关于x,y的二元一次方程组{x + y = k,x - y = 9k,

得{x = 5k,y = - 4k代入方程x + 3y = 7,

得5k - 12k = 7,解得k = - 1;

17. 因为已知程序的运算顺序为: x × 3 - 2,

所以当输入的x = 5时,有5 × 3 - 2 = 13,< 244,

当输入的x = 13时,有13 × 3 - 2 = 63 < 244,

当输入的x = 63时,有63 × 3 - 2 = 187 < 244,

当输入的x = 187时,有187 × 3 - 2 = 559 > 244,

所以若x = 5,则运算进行4次才停止. 若运算进行了5次才停止,

则有第一次结果为3x - 2,

第二次结果为3( 3x - 2) - 2 = 9x - 8,

第三次结果为3( 9x - 8) - 2 = 27x - 26,

第四次结果为3( 27x - 26) - 2 = 81x - 80,

第五次结果为3( 81x - 80) - 2 = 243x - 242,

所以解得2 < x≤4;

18. 7 或 9 或 6 或 10.

点拨: 解方程组,得当y是整数时,m - 8 = ± 1或 ± 2,

解得m = 7或9或6或10.

当 m = 7 时,x = 9; 当 m = 9 时,x = - 7; 当 m = 6 时,x = 5;

当 m = 10 时,x = - 3.

故 m = 7 或 9 或 6 或 10.

三、19. 由题意,得

20. 设一枚壹元硬币x克,一枚伍角硬币y克,则根据题意,得

答: 一枚壹元硬币6. 1克,一枚伍角硬币3. 8克.

21. ( 1) 证明: 六边形的内角和为( 6 - 2) × 180° = 720°.

因为六边形ABCDEF的内角都相等,

所以每个内角的度数为720° ÷ 6 = 120°.

又因为∠DAB = 60°,四边形ABCD的内角和为360°,

所以∠CDA = 360° - ∠DAB - ∠B - ∠C = 360° - 60° - 120° - 120° = 60°,

所以∠EDA = 120° - ∠CDA = 120° - 60° = 60°,

所以∠EDA = ∠DAB = 60°,

所以AB∥DE( 内错角相等,两直线平行) .

( 2) EF∥BC,AF∥CD,EF∥AD,BC∥AD.

22. ( 1) 根据实数的除法法则: 同号两数相除得正数,异号两数相除得负数,因此,原不等式可转化为:

解1,得 -5/2< x≤4;

解2,得无解. 所以原不等式的解集是 -5/2< x≤4.

( 2) 根据实数的除法法则: 同号两数相除得正数,异号两数相除得负数,因此,原不等式可转化为:

解1,得 x > 3; 解2,得 x < - 2.

所以原不等式的解集是x > 3或x < - 2.

23. ( 1) 设搭建A种园艺造型x个,则搭建B种园艺造型( 50 - x)个,则根据题意,得

解得31≤x≤33,所以可设计三种搭配方案:

1A种园艺造型31个,B种园艺造型19个;

2A种园艺造型32个,B种园艺造型18个;

3A种园艺造型33个,B种园艺造型17个.

( 2) 由于搭配一个A种造型的成本是200元,搭配一个B种造型的成本是360元,所以搭配同样多的园艺造型A种比B种成本低,则应该搭配A种33个,B种17个. 即最低成本为33 × 200 + 17 × 360 = 12720( 元) .

24. ( 1) 因为C小组的人数为5人,占被抽取人数的20% ,且前三组的频数之比为9∶ 4∶ 1,所以5 × 4 ÷ 20% = 100( 人) ,所以本次抽取的人数为100人.

( 2) 依题意,得A小组的学生数 = 5 × 9 = 45人,所占比例为45/100×100% = 45% ; C小组的学生数是5人,所占比例为5/100×100%=5%;D小组的学生数=100-45-5×4 - 5 - 100 × 18% = 12( 人) ,所占比例为12/100× 100% = 12% . 所以补全直方图的高度为12,如图中的阴影部分; 扇形统计图中A区域、C区域、D区域所占的百分比分别为A: 45% 、C: 5% 、D: 12% .

( 3) 答案不惟一,只要看法积极向上均可. 如,迷恋网络的人比较多,我们要注意合理使用电脑. 等等.

25. ( 1) 1∠AED = 70°; 2∠AED = 80°;

3猜想: ∠AED = ∠EAB + ∠EDC.

证明: 过点E作EF∥DC,则∴ ∠DEF = ∠EDC,

又∵ AB∥DC,∴ AB∥EF,∴ ∠AEF = ∠EAB,

∵ ∠AED = ∠AEF + ∠DEF,

∴ ∠AED = ∠EAB + ∠EDC.

( 2) 根据题意,得点P在区域1时,

如图3,过点P作PG∥AB,

∵ AB∥DC,

∴ PG∥DC,

∴ ∠EPG = 180° - PEB,∠FPG = 180° - ∠PFC,

∴ ∠EPF = 360° - ( ∠PEB + ∠PFC) ; 点P在区域2时,

如图4,过点P作PG∥AB,

∵ AB∥DC,∴ PG∥DC,

∴ ∠GPE = ∠PEB,∠GPF = ∠PFC,

∴ ∠EPF = ∠PEB + ∠PFC; 点P在区域3时,

如图5,过点P作PG∥AB,

∵ AB∥DC,∴ PG∥DC,

∴ ∠GPF = 180° - ∠PFC,∠GPE = 180° - ∠PEB,

∴ ∠GPF - ∠GPE = ( 180° - ∠PFC) - ( 180° - ∠PEB) = ∠PEB - ∠PFC,

即∠EPF = ∠PEB - ∠PFC; 点P在区域4时,

如图6,过点P作PG∥AB,

∵ AB∥DC,∴ PG∥DC,

∴ ∠GPF = ∠PFC,∠GPE = ∠PEB,

∴ ∠GPF - ∠GPE = ∠PFC - ∠PEB,

即∠EPF = ∠PFC - ∠PEB.

26. ( 1) 依题意,得点B( 3,5) .

( 2) 过C作直线CD交AB于D,

由图可知OC = AB = 5,OA = CB = 3.

1当( CO + OA + AD) ∶ ( DB + CB) = 1∶ 3 时,

即( 5 + 3 + AD) ∶ ( 5AD + 3) = 1∶ 3,

所以8AD = 3( 8 + AD) ,解得AD = 4( 不合题意,舍去) .

2当( DB + CB) ∶ ( CO + OA + AD) = 1∶ 3 时,

即( 5AD + 3) ∶ ( 5 + 3 + AD) = 1∶ 3,所以8 + AD = 3( 5AD + 3) ,

解得AD = 4,所以点D的坐标为( 3,4) .

( 3) 由题意,得C'( 0,3) ,D'( 3,2) ,

由图可知OA = 3,AD' = 2,OC' = 3,

27. 分析:

( 1) 根据平行线的性质,

以及等量代换证明∠ADC + ∠C = 180°,

即可证得AD∥BC.

( 2) 由直线AB∥CD,根据两直线平行,同旁内角互补,

即可求得∠ABC的度数,又由∠DBE =1/2∠ABC,

即可求得∠DBE的度数.

( 3) 首先设∠ABD = ∠DBF = ∠BDC = x°,

由直线AB∥CD,根据两直线平行,同旁内角互补与两直线平行, 内错角相等,

可求得∠BEC与∠ADB的度数,

又由∠BEC = ∠ADB,

即可得方程: x° + 40° = 80° - x°,

解此方程即可求得答案.

解: ( 1) AD∥BC. 理由: 因为AB∥CD,

所以∠ADC + ∠C = 180°,

又因为∠A = ∠C,

所以∠ADC + ∠C = 180°,

所以AD∥BC.

( 2) ∵ 因为AB∥CD,

所以∠ABC = 180° - ∠C = 80°,

因为∠DBF = ∠ABD,BE平分∠CBF,

所以∠DBE =1/2∠ABF +1/2∠CBF =1/2∠ABC = 40°.

( 3) 存在. 理由: 设∠ABD = ∠DBF = ∠BDC = x°.

因为AB∥CD,

所以∠BEC = ∠ABE = x° + 40°,∠ADC = 180° - ∠A = 80°,

所以∠ADB = 80° - x°.

若∠BEC = ∠ADB,则 x° + 40° = 80° - x°,

解得x° = 20°,所以存在∠BEC = ∠ADB = 60°.

点评: 此题考查了平行线的性质与平行四边形的性质. 此题难度适中,解题的关键是注意掌握两直线平行,同旁内角互补与两直线平行, 内错角相等定理的应用,注意数形结合与方程思想的应用.

28. ( 1) 设新建一个地上停车位需x万元,新建一个地下停车位需y万元,则根据题意,得

答: 新建一个地上停车位需0. 1万元,新建一个地下停车位需0. 4万元

( 2) 设新建m个地上停车位,则根据题意,得

10≤0. 1m + 0. 4( 50 - m) ≤11,解得30≤m <100/3.

因为m为整数,所以m = 30或m = 31或m = 32或m = 33,

对应的50 - m = 20或50 - m = 19或50 - m = 18或50 - m = 17,

所以,有四种建造方案.

篇4：七年级(下)期中测试

Ⅰ. 词汇。(共10小题,每小题1分,共10分)

A) 根据英文解释和例句,完成下列单词的拼写。(首字母已给出)

1.e____ (like; love)

Do you ____ watching TV?

2.c____ (not dirty)

Our classroom is nice and ____.

3.w____ (go on foot)

I usually ____ to school every day.

4.v____ (go to see sb. or a place)

We’ll ____ our English teacher this Sunday.

5.a____ (get to)

They will ____ at the airport at ten o’clock tomorrow morning.

B) 根据句子意思,用括号内所给词的正确形式填空。

1.My mother goes ____(shop) on Sundays.

2.It’s a beautiful ____(sun) day. Why not go out for a walk?

3.The old man and his daughter are very ____(friend) to us.

4.Tigers are ____(danger) animals.

5. Our teacher often tells us ____(interest) stories in English.

Ⅱ. 单项填空。(共15小题,每小题1分,共15分)

1. There are two windows ____ this wall and one picture ____ it.

A. in; on B. in; in C. on; on D. on; in

2. The twins ____ brown jackets today. They look fine.

A. are wearing B. are putting onC. are wear D. put on

3. There are many textbooks on the teacher’s desk. The ____ are counting(数) ____.

A. child; it B. child; themC. children; them D. children; it

4. “____ is it ____?” “Oh, great!”

A. What; look B. How; going C. How; go D. What; going

5. Where ____ koala bears ____?

A. are; come fromB. do; come from C. /; comes fromD. /; from

6. “What do you do?” “I’m a shop assistant. But I want to be a bank clerk ____.”

A. some time B. sometime C. some times D. sometimes

7. Please come to see me ____ seven and eight.

A. at B. among C. aboutD. between

8. I hear there is a ____ panda in the zoo.

A. two years old B. two-year-old C. two years D. two-years-old

9. I like to play football ____ my classmates after school.

A. onB. at C. forD. with

10. Mother isn’t ____ a book. She’s ____ TV.

A. seeing; seeingB. watching; lookingC. reading; watchingD. looking at; watching

11. Look! Two ____ are talking happily under the apple tree.

A. man teacherB. man teachers C. men teachers D. men teacher

12. Uncle Tom is ____ on the bed and thinking about something.

A. lyingB. sleeping C. standing D. lieing

13. I’m ____ Helen. Do you know where she is?

A. looking up B. looking after C. looking at D. looking for

14. Let me have a look at ____ photo.

A. Lily’s and LucyB. Lily’s and Lucy’s C. Lily and Lucy’sD. Lily and Lucy

15. I have two pen pals. ____ is from Canada, ____ is from the USA.

A. Some; othersB. Some; the otherC. One; another D. One; the other

Ⅲ. 完形填空。(共10小题,每小题1分,共10分)

The weather in desert(沙漠) is drier and drier. There is __1__ wind. You can’t walk up the wind. The desert is larger and larger. It is very __2__ to stop it from growing.

The weather __3__ the hills is worse than before. Many trees and other plants are cut down. When it __4__, the earth and stones will flow down. It will break __5__ and destroy the crops.

The weather in many towns isn’t __6__. More and more __7__ are built. They send out much air which is polluted(污染). They give out much waste __8__ which is polluted, too. The people around the towns sometimes have acid(酸的) rain.

The weather __9__ cities is disappointing. When they build buildings, they cut down trees, destroy the nature. So they __10__ sandstorm(沙尘暴) every year.

1. A. many B. much C. fewD. little

2. A. interestingB. dangerous C. friendlyD. important

3. A. aroundB. behind C. exceptD. under

4. A. rain B. to rain C. rains D. raining

5. A. hillsB. houses C. homesD. families

6. A. bad B. uglyC. goodD. old

7. A. factoriesB. parksC. zoos D. bridges

8. A. foodB. waterC. fruitD. vegetables

9. A. atB. on C. toD. in

10. A. have B. playC. meet D. make

Ⅳ. 阅读理解。(共20小题,每小题2分,共40分)

(A)

Some countries never have snow, and some have only a little on the top of very high mountains. In the north of England, there is quite a lot of snow every winter, but in the south of England, there is usually little.

When a student from a warm country comes to England in autumn for the first time, he feels cool at first. There are often dark clouds, grey sky and cold rain in England in autumn, and most students from warm countries do not like these.

But snow is different. Though it is cold, it is beautiful. Perhaps, after several dark mornings, the student wakes up one day, and there is a lot of light in his room. He thinks “Is it so late?” and jumps out of the bed. But no, it is not very late. He looks out of the window and there is snow on the ground and on the houses and everywhere. The light of his room comes from the clean, beautiful snow.

1. In which part of England is there much snow in winter? ____.

A. In the eastB. In the south C. In the west D. In the north

2. In the autumn of England, we cannot often see ____.

A. strong windsB. dark cloudsC. grey sky D. cold rain

3. In England both snow and autumn rain are ____.

A. beautifulB. clean C. cold D. heavy

4. Why does the student ask himself “Is it so late?”? ____.

A. Because it’s really late B. Because he has some work to do

C. Because it is bright in the roomD. Because he usually gets up early

5. Which of the following is right? ____.

A. Every country in the world has snow in winter

B. Many people in the world haven’t seen snow

C. It is often very warm in the autumn of England

D. Foreign students like the weather in England in autumn

(B)

There are many kinds of ants(蚂蚁) in America. One kind is very strong. People are afraid of them and animals are afraid of them, too.

These ants are often in big groups. They eat all the animals on their way. They can kill and eat elephants. And they can eat horses. Sometimes they can kill people and eat them. When the ants come near, people leave their homes. But sometimes people are happy after the ants pass by. Because they can see no insects(昆虫) or snakes.

1. Some ants in America can be very ____.

A. uglyB. strong C. friendly D. shy

2. People and animals are afraid of ____.

A. a kind of ants B. all kinds of ants C. small ants D. big ants

3. People are afraid of the ants because ____.

A. they can eat and kill elephants B. they can eat horses

C. they are often in big groups D. they can kill people

4. Where are the insects or the snakes after the ants pass by? ____.

A. They are under the groundB. They go with the ants

C. Ants kill and eat themD. People kill and eat them

5. Which is the best title for the story? ____.

A. Ants B. American AntsC. Big Ants D. Strong Ants

(C)

In history, people were interested in nature. They wanted to forecast(预测) the weather and control it. Ben Franklin used some simple tools to make some of the first weather forecasts. Like most of us, my friend, Mr Miller, knows the weather by watching TV.

What’s the weather like today? A long time ago, people answered that question by looking outside. Today, you just watch television or listen to the radio. Weathermen tell people what the weather is like by using computers and satellites(卫星). At any time, people can know the weather.

What will the weather be like tomorrow? That question is a little difficult. During those old days, people didn’t know what the coming weather would be like. Today, people can get reliable weather forecasts through satellites.

Ben Franklin forecast the weather on horseback, but modern weathermen forecast it from weather centers.

1. The passage is mainly about the ____.

A. TV programs B. computer classes C. natural historyD. weather forecast

2. Here the underlined word “it” means ____.

A. history B. natureC. weather D. science

3. A long time ago, people knew the weather by ____.

A. turning on the television B. watching the sky

C. using the computerD. listening to the radio

4. What does the underlined word “reliable” mean in Chinese? ____.

A. 精确的 B. 可靠的C. 详细的D. 先进的

5. Which of the following is TRUE?____.

A. Only weathermen are interested in nature

B. Ben Franklin made a contribution(作出贡献)

C. Everyone knows the weather by using satellites

D. Weathermen forecast the weather on horseback today

(D)

In England, people don’t often talk to each other when they travel. If you get on a bus, or in a train, you will sometimes see people sitting and looking out of the window. Other people will be reading books or newspapers. But Englishmen often talk about the weather because they can experience four seasons in one day. When you meet English people, they often start a conversation by talking about the weather. So when you meet somebody in England, you can say, “Nice weather for the time of year!”

“But it was a little cold yesterday,” somebody may answer.

“But it will get a bit warm later,” you can say.

Talk like this, and the Englishman will think, “How friendly you are!”

根据短文内容,判断句子正(T)误(F)。

1. English people often talk about newspapers in a train or on a bus.

2. When you meet an Englishman, you can start a conversation by talking about weather.

3. Englishmen often talk about weather because it is changeable.

4. If you talk to people about the weather, they usually think you are friendly

5. In England, people don’t enjoy good weather.

Ⅴ. 按要求转换句型,每空一词。(共5小题,每小题2分,共10分)

1. What is the English for this? (同义句转换)

What’s this ____ ____?

2. I think I like spring best. (改为否定句)

I ____ ____ I ____ spring best.

3. Tom speaks English. (改为一般疑问句)

____ Tom ____ English?

4. Is there a supermarket in front of the hotel? (作肯定回答)

____, ____ ____.

5. Bob likes elephants because they look very strong. (对划线部分提问)

____ ____ Bob like elephants?

Ⅵ. 根据汉语意思完成句子。(共5小题,每小题2分,共10分)

1. 我喜欢与那个婴儿玩。

I like ____ ____ the baby.

2. 你上周的旅行玩得高兴吗?

____ you ____ ____ ____ ____ last week?

3. 听!那些孩子正在谈论什么?

Listen! What are the children ____ ____?

4. 在交通灯处往左拐,你就会看到那个公用电话。

____ ____ at the traffic lights, and you can see the payphone.

5. 公园是在学校对面吗?

Is the park ____ ____ the school?

Ⅶ. 从方框中选择适当的句子补全对话。(共5空,每空2分,共10分)

A. Yes, the people are really very relaxed.

B. What are the others doing?

C. Where are you?

D. Really?

E. How’s the weather there?

Betty: Hi. Mum, can you hear me?

Mum: Yes, I can. __1__

Betty: I’m in Australia.

Mum: __2__

Betty: I’m joining CCTV’s Around the World show.

Mum: __3__

Betty: It’s sunny.

Mum: That’s great, Betty. __4__

Betty: Well, Tony is taking photos. Wang Hui is lying on the beach. And others are playing beach volleyball.

Mum: Sounds interesting.

Betty: __5__

Ⅷ. 书面表达。(15分)

请根据下表,写一份调查报告,然后告诉大家你自己的梦想及其原因。

篇5：七年级寒假作业

语文寒假作业

尊敬的家长：

请鼓励您的孩子认真完成每一项寒假作业，请您在百忙之中检查孩子作业并逐项签字，开学报名时交上来。

一．办语文手绘小报一份。

要求：

1、版面：长55厘米，宽39厘米，横向排版。

2、制作：书写和绘画全手工，不得用电脑。

3、主题：在七年级(上)语文课本的六个综合性学习中任选一个主题作为小报主题。开学评比。（家长签字：）

二．坚持写日记要求：

1．字数要求在300字以上的有5篇，其它字数不限。2．名著阅读读后感一篇。

3、班徽设计及说明书一份（并用A4纸打印准备参评）。（家长签字：）

三．坚持每天不少于20页的课外阅读。要求：

1．《朝花夕拾》、《西游记》、《骆驼祥子》、《海底两万里》（根据自己情况可以选择少年版、完全版等），在寒假中开始阅读。克服阅读障碍，反复阅读，争取渐入佳境。2．从“消遣休闲型、猎奇猎艳型、了解信息型” 这些阅读的较低层次逐渐过渡到“增长学识型”和“涵养精神型”，要求自己渐渐进入阅读的较高境界。（家长签字：）

四．坚持语文积累背诵。要求：

全方位复习七年级上册课本背诵的所有内容，每一篇都要求熟背，请家长检查抽背。（家长签字：）

五．要求每天必须在田字格上练字一篇。（家长在本子上签字并写上日期）

六．请收集各种春联30副（家长签字：）七．合理安排自己的压岁钱要求：

1．给父母买一份小礼物。（家长签字：）

2．为自己存一份“阅读基金”，专款用于购买下学期的课外阅读好书。（家长签字：）

八．坚持每天锻炼身体。（家长签字：）

九．在家里每天主动承担一项家务。（家长签字：）十.在家做好各项安全义务宣传员（家长签字：）

孙疃中心学校七年级语文备课组