2013 8A国庆假期作业(2)
2012-2013学年八年级上数学国庆假期作业(二)
2012-2013学年度第一学期八年级数学假日校本作业（2）班级 ___ 学号____姓名____ 完成本作业实际时间为 分钟 家长签字 一、选择题1. 16的平方根是 （ ）A ．4 B. ±4 C. 256 D. ±2562. 三角形的三边长a 、b 、c 满足ab c b 2)a (22+=+，则这个三角形是 （ ）A ．等边三角形 B. 钝角三角形 C. 直角三角形 D.锐角三角形3. 直角三角形的斜边比一直角边长2 cm ，另一直角边长为6 cm ，则它的斜边长 （ ）A. 4 cmB. 8 cmC. 10 cmD. 12 cm4. 下列说法中不正确的是 （ ）A.10的平方根是±10B.-2是4的一个平方根C.94的平方根是32 D.0.01的算术平方根是0.1 5. 等腰三角形腰长10cm ，底边16cm ，则面积是（ ） A ．296cmB ．248cmC ．224cmD ．232cm6. 下列语句中正确的是 （ ）A.带根号的数都是无理数B.不带根号的数都是有理数C.有理数与无理数的积为无理数D.无理数都是无限小数7. 下列四组数中，不是勾股数的一组数是 （ ） A ．15，8，17 B ．9，12，15 C ．7,24,25 D ．3，5，7 8. 如图，在Rt △ABC 中，∠C=90°，D 为AC 上一点，且DA=DB=5，又△DAB 的面积为10，那么DC 的长是 （ ） A.4B.3C.5D.4.59. 如图,若数轴上的点A ，B ，C ，D 表示数-2，1，2，3，则表示34-的点P应在线段 （ ）A. 线段AB 上B. 线段BC 上C. 线段CD 上D. 线段OB 上 10. 如图,一个圆柱高8cm,底面半径2cm ，一只蚂蚁从点A 爬到点B 处吃食，要爬行的最短路程是（π≈3） （ ）A. 20cmB. 10cmC. 14cmD. 无法确定 二、填空题：. 若一正数的两个平方根分别是2a －1与－a ＋2，则这个正数等于 .12. （1）0.05047（保留2个有效数字） ； （2）0.43万（精确到千位） ；（3）3.5×103精确到 位，有 个有效数字. 13. 32-的相反数是 ，绝对值是 .14. 若一直角三角形三边长分别为3和4，则第三边长为 .15. 若实数a 、b 满足32)2(2+-+-+a b b a =0，则a= , b= .16. 比较大小：（1）23__2-- ；（2）10__23+. 17. 数轴上，到原点的距离等于32的点表示的实数是 . 18. 已知实数a 、b 、c 化简22)(c b a c b a a -+-+--19. 如图，在△ABC 中，∠C ＝90°，AD AB ＝10㎝，AC ＝6㎝，△BDE 的周长为 ㎝. 20. 在长方形纸片ABCD 中，AD ＝4cm ，AB ＝10cm ，按如图方式折叠，使点B 与点D 重合，折痕为EF ，则DE ＝ cm. 三、解答题 21. 计算： （1）25936.0+（2） 31328)1(332--+-+-22. 把下列各数分别填入适当的集合内 023)3.(55.2,)2(,202.1,1000,3,9.0,196,2.0-------ππ,722… 有理数集合{ …} 无理数集合{ …} 整数集合 { …} 负数集合 { …}-3432 1 0-1 -2DC B O A ABDCAEBCDFC ′23. 如图，每个小方格的边长都为1. （1）图中BC 边的长是 ； （2）求图中格点四边形ABCD 的面积; （3）在数轴上作出表示17-的点．24. 如图，一架2.5米长的梯子AB ，斜靠在一竖直的墙AC 上，这时梯足B 到墙底端C 的距离为0.7米，如果梯子的顶端沿墙下滑0.4米，那么梯足将向外移多少米？25. 设m 是13的整数部分，n 是13的小数部分， 试求2m －n 的值.26. 数字穿墙，观察下列各式322+＝232；833+＝383；1544+＝4154…………… ① 试猜想b a +5＝5ba（a,b 为整数），则a ＝ b ＝ ② 请用只含一个字母n （n ≥2）的等式表示上述规律。
译林版英语八年级上册国庆假期作业
初二英语假期作业（8A Units1-2）【知识要点回顾】一、重点短语回顾：翻译下列短语1. 一些喝的东西2. 保守秘密3. 关心4. 说谎话5. 我最好的朋友之一6. 与她的朋友们分享东西7. 有一副好嗓子8. 使他看起来很聪明9. 有很强的幽默感10. 感到无聊11. 把我们的书和笔撞到地上12. 说任何人的坏话13. 与某人交朋友14. 环游世界15. 进行一次学校旅行16. 我的理想学校17. 获得第一18. 成为一名杰出的老师19. 有很多时间进行课外活动20. 为某人买某物(2种）21. 最喜欢法语22. 一门外语23. 在这周快要结束时24. 和我们的同班同学讨论这些书25. 在课堂上26. 主动给予我帮助（2种）27. 学生数量28. 有…周休假时间29. 花时间做某事30. 浏览31. 起初32. 继续做某事二、重点句型回顾：翻译下列句子什么使你的朋友如此特别？_____________________________________________________ 你相信他说的话吗？___________________________________________________________ 她乐意在任何时候帮助别人。
____________________________________________________ 当有事情困扰我时，我总是会去找她诉说。
_________________________________________ 他是我们班上最高的男孩。
______________________________________________________ 他比我们班其他任何一个男孩都高。
______________________________________________ 狗为什么不上学呢？__________________________________________________________学外语很有趣。
八年级数学上学期国庆假期作业二
八年级数学国庆假期作业（二）家长签名__________班级 学生姓名 一、选择题1．下列几组数中不能作为直角三角形三边长度的是 （ ） A ．7,24,25a b c === B ． 1.5,2, 2.5a b c === C ．25,2,34ab c ===D ．15,8,17ab c ===2．小强量得家里彩电荧屏的长为cm 58，宽为cm 46，则这台电视机尺寸是 （ ）A ．9英寸（23cm ）B ．21英寸（54cm ）C ．29英寸（74cm ）D ．34英寸（87cm ）3．等腰三角形腰长10cm ，底边16cm ，则面积 （ ）A ．296c mB ．248c mC ．224c mD ．232c m4．三角形三边c b a ,,满足ab c b a 2)(22+=+，则这个三角形是（ ）A ．锐角三角形B ．钝角三角形C ．直角三角形D ．等腰三角形 5．2(6)-的平方根是（ ）A ．6-B ．36C ．±6D ．6±6．下列命题正确的个数有：a a a a ==233)2(,)1(（3）无限小数都是无理数 （4）有限小数都是有理数（5）实数分为正实数和负实数两类 （ ）A ．1个B ．2个C ．3个D ．4个7．x 是2)9(-的平方根，y 是64的立方根，则=+y x（ ）A ．3B ．7C ．3，7D ．1，7 8．直角三角形两直角边长度为5，12，则斜边上的高 （ ）A ．6B ．8C ．1813D ．60139．直角三角形两直角边长为b a ,，斜边上高为h ，则下列各式总能成立的是（ ）A 、2h ab = B ．2222h ba =+C ．hb a 111=+D ．222111hba=+10．如图一直角三角形纸片，两直角边cm BC cm AC 8,6==，现将直角边AC 沿直线AD 折叠，使它落在斜边AB 上，且与AE 重合，则CD 等于（ ） A ．cm 2 B ．cm 3 C ．cm 4 D ．cm 511．以直角三角形的三边向外作正方形P 、Q 、K ，若S P =4，S Q =9， 则S K 为 （ ）A 、13B 、5C 、5或13D 、以上都不对AEBDC第10题图二、填空题12．下列实数(1)3.1415926 .(2)0.322(3)7(4(5)-(6)2π(7)0.3030030003...其中无理数有________，有理数有________．（填序号） 13．49的平方根________，0.216的立方根________的平方根________的立方根________．14．算术平方根等于它本身的数有________，立方根等于本身的数有________． 15．若2256x =，则=x ________，若3216x =-，则=x ________． 16．已知R t A B C ∆两边为3，4，则第三边长________．17．若三角形三边之比为3：4：5，周长为24，则三角形面积________．18．已知三角形三边长n n n n n n ,122,22,1222++++为正整数，则此三角形是________三角形．19．如果0)6(42=++-y x ，则=+y x ________．20．如果21a -和5a -是一个数m 的平方根，则.__________,==m a 21．三角形三边分别为8，15，17，那么最长边上的高为________．22．直角三角形三角形两直角边长为3和4，三角形内一点到各边距离相等，那么这个距离为________． 三、计算题23．求下列各式中x 的值2(1)16490x -=2(2)(1)25x -=； 3(3)(2)8x =-； 3(4)(3)27x --=．四、作图题 24．在数轴上画出8-的点．25．下图的正方形网格，每个正方形顶点叫格点，请在图中画一个面积为10的正方形． 五、解答题26．已知如图所示，四边形ABCD 中，3,4,13,12,A B cm A D cm B C cm C D cm ====90A ∠=求四边形ABCD 的面积．第24题图第25题图A27．如图所示，在边长为c 的正方形中，有四个斜边为c 、直角边为b a ,的全等直角三角形，你能利用这个图说明勾股定理吗？写出理由．28．如图所示，15只空油桶（每只油桶底面直径均为60cm ）堆在一起，要给它盖一个遮雨棚，遮雨棚起码要多高？29．如图中AC=40m ，CB=30m ，从教室到办公室，总有少数同学不走人行道AC 和BC ，而横穿草坪（从A 到B ），你认为他们这样走近了多少m ？30．如图，有一只小鸟从小树顶飞到大树顶上，请问它飞行的最短路程是多少米？（先画出示意图，然后再求解）．第27题图第28题图31．如图，在△ABC 中，∠ACB=900，AB=5㎝，BC=3㎝，CD ⊥AB 于D ， 求：(1)AC 的长；(2)△ABC 的面积；(3)CD 的长．32．如图所示，在R t A B C∆中，090A C B∠=，CD 是AB 边上高，若AD=8，BD=2，求CD ．33．㈠小明在玩积木游戏时,把三个正方形积木摆成一定的形状,正视图如图①,问题(1):若此中的三角形△DEF 为直角三角形,P 的面积为9,Q 的面积为15，则M 的面积为_______。
部编版八上语文国庆假期作业
部编版八上语文国庆假期作业（含答案）班级姓名一、语言积累及运用计54分1．下列加点字的注音完全正确的一项是( )3分A．凛．冽(lǐng) 要塞．(sài) 轻盈．(yínɡ) 锐不可当．(dǎng)B．颁．发(bān) 仲．裁(zhòng) 履．行(lǚ) 屏息敛．声(liǎn)C．悄．然(qiāo) 翘．首(qiáo) 湛．蓝(zhàn) 摧枯拉朽．(xiǔ)D．凌．波(lín) 镌．刻(juān) 督．战(dū) 一丝不苟．(gǒu)2．下列各组词语中汉字书写完全正确的一项是( )3分A．潇洒凌空凛冽眼花潦乱B．监视操纵桅杆阵耳欲聋C．馈退坠毁紧绷惮精竭虑D．浩瀚遗嘱吞食白手起家3．下列加点的词语使用有误的一项是( )3分A．军乐团奏响《检阅进行曲》，万众瞩目．．．．的阅兵分列式开始了。
B．舆论的力量就像排山倒海．．．．一般，令人无法抵挡。
C．中国人每年“舌尖上浪费”锐不可当．．．．，被倒掉的食物相当于2亿多人一年的口粮。
D．一位市民收到中奖短信，喜冲冲跑去银行汇钱，却在见到银行前一道防诈骗横幅后如梦初醒．．．．。
4．下列句子没有语病的一项是( )3分A．新春佳节，万家团圆，你们却依然坚守在祖国最北端的边防线上，你们的钢铁之躯为万家和乐奉献着自己的青春。
B．一首首诗，一段段合唱，一幕幕短歌剧，在两小时之内，将半个多世纪的残酷历史出现在我们眼前。
C．战争的历史与人类的历史一样久远，从远古战争中走来的现代人，依然没有走出战争的阴影。
D．能否规范地书写汉字，是对义务教育阶段学生书写的基本要求。
5．对下列句子的修辞手法判断有误的一项是( )3分A．航母就像汪洋中的一片树叶，在海上起伏行进。
(比喻)B．金戈铁马，气吞万里如虎。
(借代、夸张)C．发动机的咆哮声越来越大，舰载机越来越近了。
(夸张、拟人)D．她已经展开身体，像轻盈的、笔直的箭，“哧”地插进碧波之中，几串白色的气泡拥抱了这位自天而降的仙女，四面水花则悄然不惊。
【VIP专享】国庆假期作业(2)Unit2
九龙口初中国庆假期作业（2）姓名_____ 得分_____一、单项选择。
（每小题1分，计15分）( )1.All these shirts are out of fashion. I want ______of them.A. noB. noneC. neitherD. any( )2.——I’m afraid no one will agree with you.——I don’t think it_____.A. mindsB. mattersC. worksD. troubles( )3.——I’m going to Suzhou for a holiday this weekend.——_______you are there, can you buy me some green tea?A. BecauseB. WhileC. WhetherD. Though( )4.——Excuse me, but I don’t think you can smoke here.——Really sorry. I______ this is a none-smoking room.A. don’t knowB. didn’t knowC. have no idea D .haven’t known( )5.——We can wear that blue suit to the theatre.——Why not ______the grey one there for a change?A. try wearingB. trying to wearC. to try and wearD. to try wearing( )6.At weekends Millie prefers ______at home to ______out.A. stay; goingB. staying; goC. staying; goingD. to stay; go( )7.Rather than ____to school by bus, I preferred ______a bike.A. to go; to rideB. go; ridingC. going; to rideD. go; to ride( )8.There’s______with your son’s ears. So don’t worry about him.A. nothing seriousB. something seriousC. serious nothingD. anything serious ( )9.______is knocking at the door. Go and see who it is.A. NobodyB. No oneC. NoneD. Someone( )10.Since_____is here, let’s begin our lesson.A. allB. somebodyC. everyoneD. no one( )11.——How many apples are there in the bag?——There’s_______.A. nothingB. noC. no oneD. none( )12.What a beautiful skirt! It ________ you.A. looks well forB. looks right onC. looks good onD. looks good for( )13. Don’t trouble him. He is in a ______mood today.A .happy B. bad C. good D. terribly( )14.What made you ______I was late last time?A. thinkB. thinkingC. to thinkD. thought( )15.He was made _____from morning till night.A. workB. to workC. workingD. works三、完形填空。
2013 8A 国庆假期作业(1)
2013 8A 国庆假期作业（1）班级___________ 姓名______________ 学号_______重点词组：1.英式/美式英语____________________________________________2.一所男女混合的学校____________________________________________3.煮健康而又可口的饭____________________________________________4.在---将要结束的时候____________________________________________5.开车送某人去某地____________________________________________6.花大量时间实践与---谈论____________________________________________7.许多英雄/偶像____________________________________________8.彼此交谈得愉快____________________________________________9.在16岁时____________________________________________10.有最少的钱____________________________________________11.得最高/低分____________________________________________12.与…相同/与…不同____________________________________________13.与…有同样的尺寸/价格/长度____________________________________________14.有7天的假期_____________________________________________15.住在离……四千米的地方____________________________________________16.去某地举行一次学校旅行____________________________________________17.读完这本书______________________________________18.一座长100米的桥____________________________________________ 重点句型：1.学校是什么样子？______________________________________________________________________________________ 2.我知道怎样烧煮健康美味的饭菜。
2013 8A 国庆假期作业(3)
2013 8A 国庆假期作业（3）班级___________ 姓名______________ 学号___________一、单项选择：( ) 1. -–What makes you so _____today, Jack ?It is your first day of school.---Because my teacher says I am ______honest boy .A. happily, anB. happily, aC. happy, aD. happy, an( ) 2. He has a good sense of humour. He often makes people _______.A. to cryB. laughC. cryingD. laughing( ) 3. American students spend ________ time _________ homework than Chinese students.A. fewer, doingB. less, to doC. less, doingD. least, doing( ) 4.Shanghai is larger than ________ city in Japan.A. anyB. any otherC. allD. other( ) 5.The more you learn, the more ________ you can pass the exam.A. easilyB. easierC. easyD. easiest( ) 6. --- I always go there by bus. ---Why not _______by train? It’s faster.A. to try goingB. trying to goC. to try and goD. try to go( ) 7. _______all the stars, the sun is________ to the earth.A. In; the nearestB. Of; the nearerC. In; the most nearD. Of; the nearest( ) 8. Jake is just ___________as Tom.A. so strongB. as strongC. strongD. more stronger( ) 9.Suzy’s jeans are the same______ Anna’s but different from Elsa’s____ colour .A. as; inB. as; likeC. as; fromD. like; as( )10.What________ your school life_________ ?A. does; likeB. do; likeC. do; look likeD. is; like( ) 11. Look out! The knife is very sharp. You ______cut your finger.A. needB. mustC. shouldD. may( ) 12. My cousin is in _________ in Shanghai No.11 Middle School.A. 3th GradeB.3 GradeC. Grade 3D. Grade 3rd( ) 13.Chinese students have ______ weeks ______ in the summertime than American students.A. more; onB. fewer; onC. many ; offD. fewer; off( ) 14. ---______ham do you need, Madam? ----One kilo and a half.A. How manyB. WhatC. How muchD. Which( ) 15. It ______ me about 25 minutes to get to the railway station yesterday.A. spendsB. madeC. tookD. spent二、完形填空：1way of learning English is by 2it, talking as 3as one can . Sometimes you will get your words mixed up(混淆) and people will not understand you. But if you 4__ your sense of humour, you can always have a good laugh at the mistakes you made. Don’t be 5if people seem to be laughing at your 6. It is 7for people to be laughing at your mistakes than to be angry because they don’t understand what you are saying. 8rule (规则) for learning English is, “Don’t be 9of making mistakes. 10ma kes mistakes.”( ) 1. A. Good B. Better C. Best D. The best( ) 2 A. saying B. thinking C. using D. listening( ) 3. A. much B. many C. more D. most( ) 4. A. keep B. learn C. lose D. finish ( ) 5. A. unhappily B. happily C. happy D. unhappy( ) 6. A. words B. mistakes C. sentence D. speaking( ) 7. A. good B. more better C. much better D. the best( ) 8 A. The useful B. The most important C. The most interesting D. The most popular ( ) 9. A. think B. say C. see D. afraid( ) 10. A. All children B. Students C. Foreigners D. Everyone三、阅读理解：AOne day a farmer went out for a walk with his daughter. The farmer put on a pair of wrong shoes－one with a thick sole (鞋底) and the other with a thin one. So as he began to walk, he felt very uncomfortable. When he was just out of the house, he turned to his daughter and said, “Why should one of my legs be longer than the other today?”The daughter looked at his father’s legs carefully as he was walking, and then laughed, “Oh, no, Daddy, your legs are all right. You have put on the wrong shoes.”The farmer was very happy to hear that and said to himself, “What a clever daughter I have got!” Then he asked his daughter to go back and get the other pair of shoes for him.The farmer had only two pairs of shoes. When the daughter ran back to the house, she found that the other pair was also a pair of wrong shoes. She had to return to his father with nothing in her hands and said out of breath, “It’s no use changing them, Daddy! The shoes at home were not a pair, either!”( ) 1. When the farmer went out for a walk with his daughter, he put on a pair of ______ shoes.A. wrongB. comfortableC. oldD. new( ) 2. A pair of wrong shoes means ________.A. the shoes are not the farmer’sB. the shoes are too smallC. one of the shoes has a thick sole, the other has a thin one, they are not a pairD. the shoes are too big( ) 3. When the farmer began to walk, he felt very uncomfortable because ________.A. one of his legs was longer than the other oneB. he was ill that dayC. he wore a pair of wrong shoesD. the shoes were too small( ) 4. The farmer thought his daughter was a clever girl because ________.A. she could make shoesB. she could find out that her father wore a pair of wrong shoesC. she could find out a pair of right shoesD. she found that her father’s legs were sick( ) 5. The father asked his daughter to go and get the other pair of shoes for him and the daughter ___.A. brought back a pair of wrong shoesB. brought back of a pair of right shoesC. didn’t bring any shoes; she knew the other pair at home was not a pair, eitherD. couldn’t find anything at homeB任务型阅读：I have many friends, and they like different subjects best . John’s favorite subject is Computer Studiesbecause he thinks the computer can help him a lot in his study. He is a computer fan. He likes playing computer games very much, and he is good at playing it. Jack likes Art best because he likes drawing pictures a lot. Mary likes Chinese best because her father is from China. Her father teaches her Chinese at home. She loves China very much, and she wants to know more about China. Bob thinks Maths is very interesting, so he likes Maths best. David likes PE best because he likes doing sports. He is good at1.Mum____________(缝)a new school bag for me last night.lie is one of the ____________(亲密) friends of theirs.3.I’m fond of ________________(自然科学)because it is very useful.4.The girl’s face turned red because she was so ________________(紧张不安的).5._______________(英雄) appeared one after another after the big earthquake.6.Of all the _____________(科目) he likes English and Maths best.7.Mr Yang has lots of knowledge. So each of us ______________(钦佩) him very much.8.I brush my teeth ______________ (two) a day.9.That woman is 50 years old at _____________(little).10.We always have a great time ____________ (chat) with each other.11.Mrs Chan told us to write as __________________(care) as we could.12.If you don’t see the doctor at once, you’ll get even ______________(ill) later on.13.After a day’s walk, she felt so tired that she couldn’t go ________________(far).14.The l_____________ (long) of the Changjiang River is about 6300 kilometres.15.My best friend’s ____________ (smile) eyes make her look cheerful and friendly.16. We must speak English as often as p____________.17. Did he and you enjoy y______________ yesterday?18. L___________, the man didn’t hurt himself.19. Her father often r___________ letters from her last year.20. I w__________ when he will leave for Beijing.21. He did very _________ in the math test. （坏）22. They didn’t pack their bags yesterday. They went to see the sunset ___________.（代替）23. English is one of the _____________ languages.（外国的）24. The Eiffel Tower is made of metal and __________ tall.（真得）25. It’s time for her to go to the ___________.（飞机场）26. Thanks for (invite) me to your party.27. Everyone became(excite) when they saw the superstar.28. _________ up now, or you’ll be late for school. (get)29. They _______ to Beijing last week. (fly) 30. Don’t be afraid. We’re all your . (support)五、根据短文内容填空，使文章意思完整：My c 1 friend is my deskmate. She is good at English, but I am w 2 in it. Once I failed in a test. I f 3 very sad and I almost wanted to give up（放弃）this subject. Then my deskmate told me that English was a very i 4 subject and we must study it well. I was moved(被感动). From then on, I studied English h 5 than before. W 6 I had difficulties, I would go to her f 7 help.With her help, my English has improved（提高）a l 8 . We are now in d 9 schools. But I六、按要求改写句子1.He is a driver , too. (同义句转换)He is a driver _____________ _______________.2.What’s the meaning of the word ? (同义句转换)What __________________ the word _____________________ ?3. I am as old as you. (同义句转换)I am the ___________________ __________________ as you .4. He is the tallest boy in our class. (同义句转换)He is taller than _______________ ______________ boy in our class.5. The school is about five minutes’ walk from here. （对划线部分提问）_____________ ______________ is the school from here ?七、根据汉语提示完成句子1.因为他晚上从事太多的电脑工作，所以视力不好。
苏科版八年级数学上册国庆假期作业(2).docx
一、选择题：（ ）1．下列方程中，关于x 的一元二次方程是 22222113(1)2(1) 200 21A x x B C ax bx c D x x x y x+=++-=++=+=-．． ．． （ ）2、要使代数式22231x x x ---的值等于0，则x 等于 A 、1 B 、-1 C 、3 D 、3或-1（ ）3、已知关于x 的方程（a 2-1）x 2+（1-a ）x+a-2=0，下列结论正确的是A 、 当a ≠±1时，原方程是一元二次方程。
B 、当a ≠1时，原方程是一元二次方程。
C 、当a ≠-1时，原方程是一元二次方程。
D 、原方程是一元二次方程。
（ ）4、某饮料厂今年一月份的产量是500吨，三月份上升到720吨，设平均每月增长的百分率是x ，根据题意可得方程A 、500（1+2x ）=720B 、B 、500+500（1+x ）+500（1+x ）2=720C 、720（1+x ）2=500D 、D 、500（1+x ）2=720( )5、下列一元二次方程中,有实数根是A.x 2-x+1=0B.x 2-2x+3=0；C.x 2+x-1=0D.x 2+4=0（ ）6、关于x 的一元二次方程02=++m nx x 两根中只有一个根等于0，正确的是A 、0,0==n mB 、0,0≠=n mC 、0,0=≠n mD 、0,0≠≠n m（ ）7、已知：实数a 、b 且a ≠b ，又a 、b 满足a 2=3a+1,b 2=3b+1，则a 2+b 2等于A 、9B 、10C 、11D 、12（ ）8、已知关于x 方程221(3)04x m x m --+= 有两个不相等实根， m 的最大整数是 A ．2 B ．－1 C ．0 D ．l（ ）9、关于x 的一元二次方程x 2＋kx －1=0的根的情况是A 、有两个不相等的同号实数根B 、有两个不相等的异号实数C 、有两个相等的实数根D 、没有实数根（ ）10、关于x 的一元二次方程（m-2）x 2+（2m-1）x+m 2-4=0的一个根是0，则 m 的值是A 、2 B 、-2 C 、2或-2 D 、12二、填空题：1、关于x 的方程（m-1）x 2+（m+1）x+3m-1=0，当m_________时,是一元一次方程;当m_________时,是一元二次方程2、已知关于x 的一元二次方程x 2+kx+k=0的一个根是–2，那么k=_ ___。
八年级英语国庆节作业二
八年级英语国庆节作业二八年级国庆节作业二（Unit 3）一、、根据句意填入单词的正确形式：1. My brother is two years ___________(old)than me.2. T om is as ___________(fat) as Jim.3. —Is your sister ___ (young) than you?—Y es,she is.4. —Who is____(thin),you or Helen? —Helen is.5. Whose pencil-box is ___ (big),yours or hers? —Hers is.6. Mary’s hair is as ____________(long) as Lucy’s.7. Ben ________ (jump) ___________ (high) than some of the boys in his class.8. —_____Nancy sing _____(well) than Helen?—Yes, she ________.9. Fangfang is not as ________ (tall) as the other girls.10. My eyes are _________(big) than ________ (she).11.Which is ________(heavy),the elephant or the pig?12. Who gets up ____________(early),Tim or T om?13. —____the girls get up_____(early) than the boys? —No,they______.14. Jim runs____(slow). But Ben runs ______(slow).15.The child doesn’t____(write) as _____(fast) as the students.16. The teacher made the naughty(淘气的) boy _____(stand) in front of the classroom.17. It’s important for us___(help) the people in trouble..2.We both get good grades because we are both good __________ school work.3.If we are good _________others we can build a society of hamony(和谐社会).4.Her cousin can do better ________math than her.5.Don’t smoke any more! It isn’t good _______ your health.三、选择1. Jack always makes us laugh, he is much ___than his brother.A. funB. funnyC. funnierD. funniest2. Both T om and I ________ tall.A. isB. areC. amD. be3. Her hair is shorter than ________.A. meB. myC. mineD. I4. Lucy can play the drums(鼓) _______Lily.A. as good asB. as well asC. as better asD. as worse as5. —Dad, would you please drive _______?—No hurry. We have enough time before the plane takes off.A. fasterB. more slowlyC. more carefully(仔细地)6. Listen! Jane is reading ________ in her room.A. loudB. loudlyC. quietD. quietly7. My best friend is good ____swimming, but I do well ___running.A.at, inB. in, atC. at, atD. in, in8. She has longer hair than ________.A. Tina’sB. TinaC. Tina isD. Tina’s is9. Should friends _________ different or the same?A. areB. beC. isD. am10. Mr Green asked us to stop _____, so we stopped ____ to him at once(立刻).A. talking, listeningB. to talk, listeningC. talking, to listenD. to talk, to listen11. ______ Sam is strong , he isn’t good at playing basketball.A. BecauseB. ThoughC. IfD. But12. Tina doesn’t study as ______ as Tara.A. hardB. goodC. hardlyD. better13. Who made the boy ________?A. cryB. cryingC. to cryD. cries14. Now telephones are very popular and they are_ than before.A. cheapB. a little cheapC. more cheaperD. much cheaper15. The ______ friends you have, the ______ you are.A. more, happyB. many, happyC.more, happierD. many, happier16. The weather in Harbin is colder than__in Nanjing in winter.A. thisB. thatC. itD. those四、完形填空I have two good friends. They’re twin brothers. One is T edand1 is Fred. T ed is not as2 as Fred, and Fred is not so smart3 T ed,4 they are both strong(强壮). And they like to make friends, too. Fred would like5 friends who are not6 him. He says, “It’s not necessary to be the7 .”He’s quieter than most8 his classmates. But he likes to have friends who are9 outgoing than himself. Frank likes to have friends like him. He’s good at 10 . Like him, all of his friends love swimming, too. Sometimes they even swim in winter.1. A. another B. others C. other D. the other2.A. old B. tall C. young D. taller3.A. like B. with C. as D. than4.A. although B. because C. until D. but5.A. to make B. making C. make D. makes6.A. as B. so C. like D. likes7. A. different B. difference C. same D. friendly8. A. from B. to C. for D. of9. A. much B. more C. a little D. little10. A. swims B. to swim C. swimmingD. swimA. T o the USA.B. T o France(法国).C. T o Italy.2. What’ s Libby like?A. She’s as beautiful as Rosa.B. She’s more outgoing than Rosa.C. She’s as quiet as Rosa.3. What kind of friends does T oby like to have?A. Those who are different from him.B. Those who are the same as him.C. He likes to have different kinds of friends.六、任务型阅读Basketball players are usually very tall. Because they need to put the ball into the basket. Other sports players may be shorter than them.Short people often have better balance(平衡)than tall people，so they don't fall over very often. In some sports the players must have good balance. For example，in table tennis，they don't need to have long legs to run fast！Some of the fast runners in the world are not very tall. Some people are tall and some are short. The tallest man in the world is 2.41 meters tall. T oday young people in many countries grow taller than their parents.This is because they eat better than their parents. Good food can help children grow.根据短文内容，回答下列问题。
八年级物理国庆节作业2
八年级物理国庆作业2一、选择题题(每小题4分，共28分)1.不同物体吸收太阳辐射的能力不同，小明认为它可能与物体的颜色有关，于是，他将几个完全相同的物体涂上不同颜色放在太阳底下，测出相同时间内物体升高的温度．就“小明认为它可能与物体的颜色有关”这一环节而言，属于科学探究中的 ( ) A．提出问题 B．猜想假设 C．进行实验 D．分析论证2.流星落在地球上会产生巨大的声音，但它落在月球上，即使宇航员就在附近也听不到声音，这是因为（）A．撞击声响度太小，人耳无法听到B．月球表面没有空气，声音无法传播C．撞击月球产生的声音音调太低D．月球受到撞击时不产生振动3.如图所示，小刚在艺术节上用吉他弹奏优美的乐曲。
对于吉他发出的声音，下列说法正确的是：( ) A．乐曲的声音是通过空气传入人耳的B．变换手指按压弦的位置可以改变声音的响度C．用力拨动吉他弦可以提高声音的音调D．拨动不同的吉他弦可以改变吉他的音色4.10月17日“神十一”上天，宇航员在太空讲话，下列说法正确的是（）A.航天员说话发出声音是因为声带在振动B.地球上的人听到航天员的声音是靠声波传回地球的C.在“天宫二号”里声音传播的速度为3.0×108米/秒D.航天员讲课声音很大是因为他的声音频率很高5.超声波探伤仪检测，正经受洪灾的三峡大坝坝体无一结构性裂缝，创造了人类水利建筑史上的奇迹．探伤仪发出的超声波无法为人耳所听觉，原因是超声波的（）A．速度太快B．响度太小C．频率太高D．频率太低6.广场舞是中国大妈非常喜欢的一种健身活动，但同时广场舞的音响却给周边住宅楼内休息的居民造成了一定影响.为了使双方的利益都得到尊重，和谐相处，你认为采取下面哪种方法是有效、合理的()A.住宅楼内的居民都戴一个防噪声的耳罩B.禁止广场舞活动C.跳舞的大妈都戴一个播放音乐的耳机D.住宅楼内安装噪声监测装置7.下列温度最接近23℃的是（）Ａ.人体的正常体温Ｂ.北方冬季的平均气温Ｃ.让人感觉温暖、舒适的房间温度Ｄ.冰水混合物的温度二、填空题(每空2分，共50分)8. 声音是以的形式传播的；在较长的装满水的铁管一端敲击一次，在另一端能听到次声音。
初二数学国庆假期作业(2)
怀文中学2014-2015学年度国庆假期作业（1）初 二 数 学命题人：陈秀珍 审核人：李芳菲 考试时间：2013-9-28 班级 学号 姓名 得分一、选择题(每题6分，共30分)1．下列命题中，正确的是 ( ) A ．三个角对应相等的两个三角形全等 B ．面积相等的两个三角形全等C ．全等三角形的面积相等D ．两边和其中一边的对角对应相等的两个三角形全等2．如图，AB//CO ，且AB=CD ，AC 交DB 于点O ，过点O 的直线EF 分别交AB 、CD 与点E 、F ，则图中全等的三角形有 ( ) A ．6对 B ．5对 C ．4对 D ．3对3．如图，在△ABC 中，F 为AC 中点，E 为AB 上一点，D 为EF 延长线上一点，∠A=∠ACD ，则CD 与AE 的关系为 ( ) A ．相等 B ．平行C ．平行且相等D ．以上都不是4．如图，在, △ABC 与△DEF 中，给出以下六个条件：①AB=DE; ②BC=EF ；③AC=DF ；④∠A=∠D ；⑤∠B=∠E ；⑥∠C=∠F ，以其中三个作为已知条件，不能判断△ABC 与△DEF 全等的是 ( ) A ．①②⑤ B ．①②③ C ．①④⑥ D ．②③④ 5．如图，∠1=∠2，AC=AD ，增加下列条件：①AB=AE ；②BC=ED ③∠C=∠D ；④∠B=∠E ．其中能使△ABC ≌△AED 的条件有 ( ) A ．4个 B ．3个 C ．2个 D ．1个二、填空题(每题6分，共30分) 6．已知△ABC ≌△DEF ，△ABC 的周长为100 cm ，DE=30 cm ，DF=25 cm ，那么BC=________________cm ．7．如图，若△ABC ≌△ADE ，∠EAC=35o ，则∠BAD=________．8．如图，在△ABC 中，D 、E 分别是边AC 、BC 上的点，若△ADB ≌△EDB ≌△EDC ，AB=10 cm ，则 BC=__________cm ．9．如图，将长方形ABCD 沿AM 折叠，使D 点落在BC 上的N 点处，如果AD=7 cm ，∠DAM=15o ， 则AN________cm ，∠NAB______________．10．在如图所示的4×4正方形网格中，∠1+∠2+∠3+∠4+∠5+∠6+∠7=___________．家长签字： 家长手机号： 完成时间：三、解答题(共40分) 11．(8分)如图①，把大小为4×4的正方形方格图形分割成两个全等图形，请在图②中， 沿着虚线画出 四种不同的分法，把4×4的正方形方格图形分割成两个全等图形．12．(10分)如图，△ABO ≌△CDO ，点B 在CD 上，AO//CD, ∠BOD=30o ,求∠A 的度数．13．(10分）已知：如图，DE ⊥AC ，BF ⊥AC ，AD ＝BC ，DE ＝BF . 求证：AB ∥DC .14．(12分)如图①， P 是∠MON 的平分线上一点，请你利用该图形画一对以OP 为公共边的全等三角形．请你参考这个作全等三角形的方法，解答下列问题：(1)如图②，在△ABC 中，∠ACB 是直角，∠B=60o，AD 、CE 分别是∠BAC 、∠BCA 的平分线，AD 、CE 相交于点F ．请你判断并写出FE 与FD 之间的数量关系； (2)如图③，在△ABC 中，如果∠ACB 不是直角，而(1)中的其他条件不变，在(1)中所得结论是否仍然成立?请说明理由．。
八年级国庆假期作业2试题
卜人入州八九几市潮王学校灌南县实验八年级语文国庆假期作业〔2〕苏(字词专题)一、给下面粗体字词注音。
岷山逶迤压黔境雪皑皑草毯泥毡峭壁酣然咀嚼矗立骨碌抽噎蔫巴火燎飒飒平仄山坳掐指殷切玛瑙踱步哽住钥匙眷恋遨游慎重募捐诬蔑焦灼踉跄愠怒哽咽愕然猝然泥泞蹊跷嫣红惊讶挟着咴咴惩罚萌发冀求瞭望拽住蜷缩酝酿惶惑绽开倔强绚丽祈祷缀着霎那阑簪搔廖缚诣熙湿漉漉翩翩起舞二、根据下面拼音写出汉字。
yáo()民chān〔〕扶yuān()枉suàn苗()méng()发niān〔〕巴gōu〔〕火qiā()指一算拖zhuài〔〕羞sè()疲bèi()急zhòu()帐péng〔〕精cuì〔〕咀jué〔〕白雪áiái〔〕群英huìcuì〔〕péngpài()chuǎimó()xiāngqiàn()àohuǐ()zhǔfù()chényín()wēiyí〔〕xuànlì()liàngqiàng〔〕三、找出下面词语中的错别字并订正。
千捶百炼()苛绢杂税()端祥()万籁具寂()燎亮()故弄悬虚()操炼()摇蓝()据礼力争()无与仑比()骄健()点掇()贫脊〔〕汗然入梦〔〕围追HY截〔〕千锤百练〔〕记忆尤新〔〕一口同声〔〕语文作业〔二〕〔诗文名句默写、赏析专题〕〔完成时间是家长签名〕姜清涛审核人：崔玲波班级学号〕一、填空。
1．五岭逶迤腾细浪，。
作者2．，三HY过后尽开颜。
3．HY一诗的中心句：。
4．烽火连三月，。
作者作品5．商女不知亡国恨，。
作者作品6．，铁马冰河入梦来。
作者作品7．山河破碎风飘絮，。
作者作品8．四渡出奇兵一诗的中心句：。
9．过雪山草地一诗的中心句：，。
10．耳朵里有不可捉摸的声响，极远的又是极近的，极洪大的又是极细切的，，像野马在平原上奔驰，，像波涛在澎湃。
八年级数学上学期国庆假期作业2
八年级数学国庆假期作业（二）一、选择题：班级学生姓名1、如图，在下列三角形中，若AB＝AC，则能被一条直线分成两个小等腰三角形的是（）（1）（2）（3）（4）A.（1）（2）（3）B. （1）（2）（4）C.（2）（3）（4）D. （1）（3）（4）2、如图，△ABC中，AD平分∠BAC，DE⊥AB，DF⊥AC，E、F为垂足，则下列四个结论，其中正确的个数是①∠DEF=∠DFE ②AE=AF③AD垂直平分EF ④EF垂直平分ADA、1个B、2个C、3个D、4个（）3、在梯形中，若有两个角相等，那么它一定为（）A、等腰梯形B、直角梯形C、一般梯形D、直角或等腰梯形4、如图，在等腰梯形ABCD中，AD∥BC，AC、BD相交于点O，有如下五个结论：①△AOD≌△BOC；②∠DAC＝∠DCA；③梯形ABCD是轴对称图形；④∠DAB+∠DCB=180°;⑤AC＝BD．其中正确结论的个数是（）A.2个B.3个C.4个D.5个5、如图，D是 ABC中BC边上一点，AB=AC=BD，则∠1和∠2的关系是（）.A.∠1=2∠2B.∠1+∠2=90°C.180°-∠1=3∠2D.180°+∠2=3∠16、下列说法不正确．．．的是（）A.两个关于某直线对称的图形一定全等B.对称图形的对称点一定在对称轴的两侧C.两个成轴对称的图形对应点的连线的垂直平分线是它们的对称轴D.平面上两个全等的图形不一定关于某直线对称7、如图所示，在等边三角形ABC中，O是三条内角平分线的交点，OD∥BC，OE∥AC，则图中等腰三角形的个数是：（）A．7 B．6 C．5 D．48、已知：∠AOB=300，点P在∠AOB的内部，P1与P关于OA对称，P2与P关于OB对称，则△P1OP2是：（）A．含30°角的直角三角形 B．顶角是30°的等腰三角形C．等边三角形 D．等腰直角三角形第5题CDBE FA第9题第6题第7题AB C360AB C900BAC1080ACB450二．填空题9、若等腰三角形的周长是20 cm ，其中一边长为8 cm ，那么它的另外两边长是____________． 10、如图,△ABC 中，DE 垂直平分AC ，与AC 交于E ，与BC 交于D ，∠C=150, ∠BAD=600，则△ABC 是__________三角形.11、 如图，△ABC 中，∠C =900，DE 是AB 的垂直平分线，且∠BAD ：∠CAD=2：1，则∠B ＝_______.（10） （11） （12） 12、如图，分别作出点P 关于OA 、OB 的对称点P 1、P 2，连结P 1P 2, 分别交OA 、OB 于点M 、N ，若P 1P 2=5cm ，则△PM N 的周长为__________________.13、如图，B 、D 、F 在AN 上，C 、E 在AM 上，且AB=BC=CD ，EC=ED=EF ，∠A=20°，则∠FEM度数是__________三、解答题：14、如图，己知AB=AC ，DE 垂直平分AB 交AC 、AB 于D 、E 两点，若AB=12cm ，BC=10cm,∠A=49º，求△BCE 的周长和∠EBC 的度数.15.如图，在AABC 中，BD 、CE 是高，G 、F 分别是BC 、DE 的中点，连接GF ，试判断GF 与DE 有何特殊的位置关系?请说明理由．DCEABBMBO A B·P （第1题） （第2题）16、（选做题）已知：如图，在∠AOB 外有一点P ，试作点P 关于直线OA 的对称点P 1，再作点P 1关于直线OB 的对称点P 2。
八年级数学国庆假期作业(2)
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八年级数学国庆假期作业（2）
班级： 姓名：
1.已知：如图，在四边形ABCD 中，AB=CB,AD=CD.求证：∠C=∠A.
2. 如图，已知AC 、BD 交于E ，∠A=∠B ，∠1=∠2．求证：AE=BE ．
3.如图,OA 平分∠BOC ，并且OB=OC ， 则AB 与AC 有什么关系，请说明理由．
4. 如图，OA=OB ，OC=OD ，∠AOB=∠COD ，请说明AC=BD 的理由．
5. 如图，O 是AB 的中点，∠A=∠B ，△AOC 与△BOD 全等吗？为什么？
A
B
O
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6.已知点在线线段上，．求证：．
7. 如图，AC=AD ，∠C ，∠D 是直角，你能说明BC 与BD 相等吗？
8．已知：如图，在△ABC 中，∠ACB=90，CD AB ⊥于点D,点E 在AC 上，CE=BC,过E 点作AC 的垂线，交CD 的延长线于点F .求证：AB=FC
9.一块三角形优良品种试验土地，现引进四个良种进行对比试验，需将这块土地分成面积相等的四块，请你制订出两种以上的划分方案供选择（画图说明）。
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2013 8A英语国庆假期作业(2)
2013 8A英语国庆假期作业（2）一用所给词的适当形式完成下列句子。
1．Andy is ________ (tall) than Sandy.Sandy is ________________(short) of us all. 2．When I got to the hospital,the old man got even ___________(bad).3．Simon runs as __________(fast) as Daniel.4．There is _________(little) bread in the box than in the fridge.5．The _________(little) you eat, the _________(thin) you will be.6．In the Math exam,I got _________(many) points,but Simon got ___________(few) points. 7．Which sport is _________________(danger),camping,cycling or diving?8．Helen plays the piano ____________________(beautiful) in her class.9．Titanic is one of _____________________(exciting) films of all.10.This is ____________________(expensive) book in the bookshop11. .Beijing Duck is __________(taste).12. It’s nice to see these _________(cheer) teenagers every day.13. Hiking is the________________(health) activity of all.14. This hair clip is ___________(pretty) than that one.15. In spring and summer, light colour is _____________(popular) than dark colour.16. Which is _______________(red) apples of the twelve?17. Last Sunday I had fun ___________(climb) Mount Tai with my friends.18. They are ready ________________(watch) TV after school.19. There’re many ______________(different) between boys and girls.20. Please __________(not let) him _________(stand) in the sun..二句型转换1.Kitty has less food than any other student in her class. 同义句Kitty has _____________ ___________ food in her class.2.We have fun talking to each other . 同义句We have ________ _____________ ____________ talking to each other.st month,my uncle flew to Beijing to visit his friend.划线提问__________ __________ your uncle __________ to Beijing last month?4.The bike behind the classroom is mine. .划线提问____________ bike _________ __________?5.I believe they will have a pleasant trip.否定句I ____________ __________ _____________ __________ have a pleasant trip.6.His watch is different from Millie’s. 同义句His watch isn’t __________ __________ ____________ Millie’s.7. He took a boat trip to the park.同义句He ________ ________ a trip to the park by boat.8. He spends two hours doing his homework. 同义句It ________ ________ two hours ________ ________ his homework.9. The school bus takes over two hours to get back to my school. (同义句)The school bus takes __________ __________ two hours to get back to my school.10. Daniel learned how to make a home page by himself. （同义句）Daniel ___________ ___________ how to make a home page .三用所给首字母的适当形式完成下列句子1.The b________ film made us feel b_____________. .2.We are classmates and we are c_______ friends.3.We must use the l________ money and do the work best.4.Huang Jiguang was one of the greatest h________ in China.5.Tom won the first prize in the competition, we a_________ him very much.6.We can learn a lot about the past in H________ lessons.7.Boys and girls have lessons together in this school, so it’s a m______ school.8.Of all the foreign l________, English is the most popular in China.9.Did he and you enjoy y______________ yesterday?10.I am very n___________ when I hear a dog bark.四、选择填空( ) 1. I took a boat trip ________ the bridge yesterday.A. onB. underC. aboveD. below( ) 2. There is _____ “r” in ______ word “answer”.A. a, theB. an, theC. a, /D. an, /( ) 3. Mr. Li asked us to help __________ to some drinks .A. himselfB. myselfC. ourselfD. ourselves( ) 4. When we were listening to the radio, suddenly we heard someone ________ at the door.A. knockedB. knockingC. knockD. knocks( ) 5. The Summer Palace is so ______. Can you feel its _______?A. beauty, beautyB. beautiful, beautifulC. beautiful, beautyD. beauty, beautiful( ) 6. ________ trees were planted last year.A.Thousands ofB. Two thousandsC. Five thousands ofD. Many thousand ( ) 7. ---How far is your home from the farm? ---- Two kilometers _______.A. farB. awayC. longD. long away( ) 8. Look! There is a chair ________ three legs in the meeting room.A. hasB. withC. ofD. have( ) 9.This maths problem is too difficult. I think ________ students can work it out.A. a fewB. a littleC. fewD. little( ) 10. Can you pass the eraser from one student to __________?A. otherB. the otherC. anotherD. others( ) 11. Please try to ________ who is on duty today..A. findB. look forC. lookD. find out( ) 12. It’s raining outside. Put on more clothes, _____you’ll be ill.A. andB. butC. orD. though( ) 13. ---Who taught ________ Japanese? ---Nobody. He taught __________.A. himself, himselfB. him, himselfC. him, himD. himself, him( ) 14. I hope you __________us.A. can be able to joinB. will able to joinC. will be able to join D .will be able to join in( ) 15. ______ man he is! He can move the heaviest box.A. How strongB. What strong aC. How a strongD. What a strong( ) 16. Excuse me, when will the train _______?A. arrive atB. get toC. reachD. arrive( ) 17. Tell me which floor you live ________ this building.A. inB. onC. in onD. on in( ) 18. “I’ll do it tomorrow.” “________ it today?”A. Why not to doB. Why don't do C Why not do D. Why do you do( ) 19. He feels sick when he is on the bus, so he always sits ________ the bus.A. in front ofB. in the front ofC. beforeD. behind( ) 20. Tian’anmen Square is ______ square in the world.A. the biggestB. the bigC. bigD. bigger五、完形填空。
江苏省大丰市八年级英语国庆假期作业(二)(无答案)
江苏省大丰市2012-2013学年八年级英语国庆假期作业（二）班级姓名学号完成时间家长签字一、单选(25%)（）1.Peter is _________ student of the six students.A. the tallerB. a tallerC. the tallestD. the most tallest（）2. He lives in a town __________ Gum Tree.A. is calledB. callingC. callsD. called（）3. My little brother is generous ___________ his friends. He’d like to share toys _________ them.A. for, toB. to, withC. to, forD. for, with（）4. Please do the exercises as __________ as you can in the English exam.A. wellB. goodC. betterD. best（）5. Which animal do you like___________, monkeys, pandas or camels?A. wellB. betterC. goodD. best（）6. Though my uncle lives in the USA, he often ___________ his family.A. thinks forB. thinks ofC. thinks outD. thinks over（）7.Why don't you ________ your favourite books here?A. takeB. bringC. to bringD. to take（）8. Linda writes ____________ than ____________ girl in her class.A. more careful; any otherB. more carefully; any otherC. more carefully; the o therD. more careful; the other（）9. Do you agree ___________ Daniel?A. toB. withC. forD. at（）10. The boy is too fat because of ____________ too much.A. eatB. eatingC. to eatD. ate（）11. Mike’s father always makes him _____________ some housework on Sundays.A. to doB. doingC. doD. does（）12. Jack is ready __________ you ____________ English.A. help, learnB. to help, learningC. help, learningD. to help, learn （）13. You should try your best ___________ noise in the Reading Room.A. don’t makeB. not makingC. not to makeD. to not make（）14. Mum, I am so hungry. Could I have _____________?A. anything eatingB. anything to eatC. something eatingD. something to eat （）15. Jill wants to try __________ others in her class.A. to be kind forB. being kind forC. to be kind toD. being kind to （）16. My hometown is ____________ beautiful than his.A. very muchB. more muchC. much moreD. very mo re（）17. Kate’s father _________ her very much because she __________ him.A. is like, likeB. likes, is likeC. likes, is alikeD. is alike, likes （）18. People in the USA say ‘____________’ while people in Britain say ‘autumn’.A. liftB. vacationC. fallD. soccer（）19. ------__________ is her home like? ------It’s big and beautiful.A. HowB. WhatC. WhyD. Who（）20. A lot of people tried their best, but _____________ people won the prize.A. a fewB. fewC. littleD. a little（）21. We love this game ____, but we spend _____time practicing.A.much, muchB.a lot, littleC.a lot, a lot ofD.a lot of, many（）22. An elephant is a ____________ animal. It can help people a lot.A. usefulB. uselessC. usedD. use（）23. Students always have a good time _______________ each other.A. talk withB. talking toC. to talkD. talking（）24. In China, most schools are ____________ schools.A. mixB. mixingC. mixedD. mixes（）25. Amy scored the __________ points in swimming. I hope she can do better next time.A. lessB. leastC. fewerD. fewest二、完形填空(15%)Ashley Smith is a 26-year-old single mother with a daughter. She was moving into her housein Atlanta, Georgia early on the morning of March 12, when a man 1 her to her door, and puta gun(枪) to her side.“I started walking to my door,and I felt really, really 2 ,”she sai d in a TV interview last week.The man was Brian Nichols, 33 years old. He 3 at an Atlanta courthouse on March 11.The police were 4 him.Nichols tied Smith up with tape, but set her free after she begged him not to take her 5 again and again. “I told him 6 he hurt me, my little girl wouldn’t have a mummy,”she said with tears.“I just talked to him and tried to 7 believe me,” Smith said.She asked Nichols 8 he chose her. “He said he 9 I was an angel sent from God,an d God asked him to do so.”Smith even 10 for the man before he allowed her to leave. Nichols was 11 when she made him breakfast and then they watched TV, seeing 12 looking for him. “I cannot 13 that’s me on the TV!” Nichols told the woman.Then, Nichols asked Smith what she thought he 14 do. She said,“I think you should turn yourself in.If you don’t,many more people are going to get 15 .”Finally, he let her go. Then she called the police.（）1.A.took B.followed C.found D.noticed（）2.A.sad B.angry C.frighten ed D.amazed（）3.A.slept B.lost a car C.caught a thief D.killed three people（）4.A.waiting for B.thinking of C.looking at D.looking for（）5.A.money B.life C.daughter D.clothes（）6.A.if B.before C.that D.when（）7.A.make him B.help him C.ask him to D.tell him to（）8.A.how B.why C.when D.where（）9.A.thinks B.thought C.throught D.thoughts（）10.A.cooked dinner B.made tea C.made cakes D.cooked breakfast（）11.A.surprised B.excited C.afraid D.unhappy（）12.A.his family B.his friends C.the police D.the little girl（）13.A.understand B.believe C.say D.expect（）14.A.might B.could C.should D.was able to（）15.A.tired B.hurt C.caught D.worried三、阅读理解(20%) 阅读下面的短文，并根据短文内容填表格What do you think of the most important inventions in the world? The TV? The printing? The telephone? Or the computer? A r eport shows that they are not the only important inventions. Here are three other important inventions.One of the simplest inventions is the toilet. Before toilets, waste ran into rivers from people’s houses. Illnesses were common in big cities, and it was often difficult to find clean drinking water.Animal food is another important invention. Before the invention, most animals were killed every autumn because there was not enough food for them in winter. After hay became a kind of common animal food, animals could live through the long winter.The thi rd great invention is glasses. Glasses help people read, write and do “close work” after the age of forty-five. Without glasses, the world would be difficult for the people aboveImportant _______1________Some most important inventions The TV, the _____2______, the _____3______, thecomputerThree other importantinventionsBefore the inventionsthe _____4_____ ____5____ ran into rivers from people’s houses____6_____ were common in big citiesIt was often difficult to find ________7______ drinking waterhay, animal food Most animals were killed in _____8_______ becausethere wasn’t enough food in winter_______9_____ Reading, writing and “close work” would b edifficult for the pe ople over ______10_______1. 2. 3. 4. 5.6. 7. 8. 9. 10.Daniel has many friends. They look different and they have different personalities, but they Name Age Appearance and hobbiesAmy (volleyball player) 17 She is very tall (1.87 meters)! She has a baby face. Her fans say she’svery beautiful. She likes listening to pop songs and drawing.Tom (skiing player) 18 He is always smiling so people say that he is a “sunshine boy”. Heis a “black horse”. He won the first gold medal(金牌) for his city this year. He likes reading and playing games.Millie (singer) 16 People call her “Baby”. She’s a cool girl with black glasses andshort hair. She likes wearing men’s clothes, so she looks like a boy.She likes singing, of course. She is good at playing basketball!（）1.How many friends does Bob introduce in this passage?A. Two.B. Three.C. Four.D. Five.（）2.What does Amy do?A. She is a volleyball player.B. She is a skier.C. She is a pop singer.D. She is a basketball player.（）3.Why do people say Tom is a “sunshine boy”?A. Because he likes reading.B. Because he likes playing games.C. Because he is always smiling.D. Because he is a skier.（）4.Which of the following is not true about Millie?A. She is very tall.B. She wears black glasses.C. She likes wearing a dress.D. She has short hair.（）5.Which sentence is wrong?A. “Baby” does well in playing basketball.B. Millie is the youngest of the thre e.C. Amy has a baby face.D. Tom likes black horses.四、首字母填空(10%)People living in d 1 countries make different kinds of words. Today there are about one thousand five hundred l 2 in the world. Each contains（含有）many thousands of words. But we do not n 3 all these words. To read short stories you need to know only about two thousand words. Before you l 4 school, you will learn only one thousand or more.The w 5 you know are called vocabulary（词汇）.You should t 6 to learn more words. Read asm 7 books as you can. There are a lot of books written in e 8 English . You'll e 9 them. Even if(即使) you learn a little English, you’ll f______ it quite understanding.1. 2. 3. 4. 5.6. 7. 8. 9. 10.五、词汇(15%)1. I’ll buy a pair of glasses because of my poor (视力).2. English is one of the most important _______________(语言)in the world3. I hate the (广告)when I watch TV.4. I want to be a doctor in the (将来).5. Your idea is great, so I (同意) with you.6. Xiao Wang is a top student. He always answers the questions (正确).7. We all can’t fo rget the (令人愉快的)hiking to the town of Datao.8. My cousin always w a smile on his face and looks happy.9. ---I am very n when I speak in class. ---There’s n o need to be afraid next time.10. Of all the s_________, I like English best.11. The fish is t________. We all like it very much.12. This book is ____________ (use) to you. You’d better not read it.13. Peter drew ____________(bad) in the drawing competition.14. Do you know the _____________ (high) of a giraffe?15He is from Britain. He is a _____________(Britain) boy.六、翻译句子(15%)1. 杨叔叔经常开车送他儿子去上学。
初二数学国庆假期作业(二)
八年级数学(上)国庆假期作业（二）编 写：许 纯 审 核：郑 红A 、4B 、±4C 、256D 、±256 2、三角形的三边长a 、b、c 满足ab c b 2)a (22+=+，则这个三角形是A 、 等边三角形B 、 钝角三角形C 、 直角三角形D 、 锐角三角形 3、直角三角形的斜边比一直角边长2 cm ，另一直角边长为6 cm ，则它的斜边长 A 、4 cm B 、8 cm C 、10 cm D 、12 cm 4、下列说法中不正确的是（ ）. A.10的平方根是±10B.-2是4的一个平方根C.94的平方根是32 D.0.01的算术平方根是0.1 5、如图，在高为5m ，坡面长为13m 的楼梯表面铺地毯，地毯 的长度至少需要A 、17mB 、18mC 、25mD 、26m6、下列几组数中不能作为直角三角形三边长度的是A ．7,24,25a b c ===B ． 1.5,2, 2.5ab c ===C ．25,2,34ab c ===D ．15,8,17ab c ===7、如图,一圆柱高8cm,底面半径2cm ，一只蚂蚁从点A 爬到点B 处吃 食，要爬行的最短路程是 （取π≈3）A 、20cmB 、10cmC 、14cmD 、无法确定 8、等腰三角形腰长10cm ，底边16cm ，则等腰三角形的面积为A ．296cmB ．248cmC ．224cmD ．232cm二、填空题9、若4x 2-25=0, 则x= . 10、-8的立方根是 。
11、平方根等于它本身的数是 ；立方根等于它本身的数是 。
12、如果21a -和5a -是一个数m 的平方根，则.__________,==m a13、若直角三角形两直角边的比为3：4，斜边长为20，则此直角三角形的面积为 。
14、若一直角三角形两边长分别为3和4，则第三边长为 。
15、如下左图，有一块直角三角形纸片，两直角边AC=6cm ，BC=8cm ，现将直角边AC 沿直线AD 折叠，使它落在斜边AB 上，且与AE 重合，则CD 等于 cm 。
苏科版八年级物理国庆假期作业2(完成日期10月2日)
泾河中心初中八年级物理国庆假期作业2姓名：__________ 完成日期：10月2日等第：_______一、先背诵《1-2乐音的特性》再填空1、响度、________和________被称为乐音的三要素；声音的________叫响度，声音的高低叫________，声音的品质叫________。
2、响度与声源的________有关，________越大，响度________。
响度的大小还与距离声源的________、声音的分散程度有关。
我们通常改变________的大小来改变声源的振幅，从而改变________。
3、音调由声源振动的________决定，________越高，音调越______。
音色是由发声体的________和________决定的。
人们能够根据________分辨不同声源发出的声音。
4、波形图的阅读：①波形图的起伏越大，________越大；②波形图的波形越______，音调越高；③波形图的形状不同，________不同。
5、如图所示，将钢质刻度尺的一端紧压在桌面上，另一端伸出桌面，分别用较小的力和较大的力拨动钢尺，使之振动发声，比较这两次振动和声音，你发现用较______的力拨动时，钢尺振动的幅度较______；听到的声音较______。
改变钢质刻度尺伸出桌面的长度，再次拨动，比较这两次振动和声音，你发现当钢质刻度尺伸出桌面较______时，钢质刻度尺振动的较______（快/慢），发出的声音音调较______。
6、当声源具有_____、_____、_____、_____、_____等特点时，声源振动频率______，音调______。
二、基础巩固1、敲击音叉，音叉由于______ _而发出声音，声音在真空中传播速度是______ m/s。
2、将要上钩的鱼，被岸上的说话声吓走，说明说话声不仅引起了空气的振动，还引起了水的，这表明水也能。
3、一个物体每秒钟振动10次，人们却听不到声音，主要原因是。
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2013 8A国庆假期作业（2）一、选择填空: (15%)( )1.They didn’t go to the park_______the heavy rain yesterday.A. becauseB. asC. because ofD. since( ) 2. —Would you like_________ hot water？—Yes, please.A. some moreB. more someC. any moreD. more any( ) 3. Students in the USA spend ______ time _____their homework than we do.A. little, to doB. little, doingC. less, doD. less, doing( ) 4. _______ good news you have!A. What aB. How aC. WhatD. How( ) 5.The number of the students in Woodland School _____1550.A. areB. isC. beD. was( ) 6. We had 8 days ______during National Day.A. restB. leaveC. holidayD. off( ) 7. Diving is not as _______ as skiing.A. dangerousB. more dangerousC. most dangerousD. the most dangerous ( ) 8.We have ______ homework on Saturday than on weekdays.A. fewB. littleC. fewerD. less( ) 9. Mr. Lin is one of in our school.A. good teachersB. better teachersC. the best teachersD. the best teacher ( )10. The Maths problem is so difficult that _______ students can work it out.A. fewB. a fewC. littleD. a little( )11. Can you do the work better with ________ time and ________ people?A. little, lessB. few, littleC. less, fewerD. fewer, less( )12. Suzy’s jeans are the same______ Anna’s but different_______ Elsa’s.A. as; asB. as; likeC. as; fromD. like; as( ) 13. What________ your school life_________ ?A. does; likeB. do; likeC. do; look likeD. is; like( )14. Our teacher always helps us __________ our study.A. toB. withC. forD. about( )15. The teacher will give us a talk on how________ English well.A. to learnB. learnC. learningD. learned( ) 16. I took a boat trip ________ the bridge yesterday.A. onB. underC. aboveD. below( )17. There is _____ “r” in ______ word “answer”.A. a, theB. an, theC. a, /D. an, /( )18. Mr. Li asked us to help __________ to some drinks .A. himselfB. myselfC. ourselfD. ourselves( ) 19. When we were listening to the radio, suddenly we heard someone ________ at the door.A. knockedB. knockingC. knockD. knocks( ) 20. The Summer Palace is so ______. Can you feel its _______?A. beauty, beautyB. beautiful, beautifulC. beautiful, beautyD. beauty, beautiful ( ) 21. We have to do lots of ______ every day to keep ourselves ________.A. exercises, healthyB. exercise, healthyC. exercises, healthD. exercise, health( ) 22. ---How far is your home from the farm? ---- Two kilometers _______.A. farB. awayC. longD. long away( )23. Look! There is a chair ________ three legs in the meeting room.A. hasB. withC. ofD. have( ) 24. Can you pass the eraser from one student to __________?A. otherB. the otherC. anotherD. others( ) 25.The people in that country spoke to us very ______.A. friendB. friendlyC. kindD. kindly ( ) 26. It’s raining outside. Put on more clothes, _____you’ll be ill.A. andB. butC. orD. though( ) 27. I hope you __________us.A. can be able to joinB. will able to joinC. will be able to join D .will be able to join in ( ) 28. ______ man he is! He can move the heaviest box.A. How strongB. What strong aC. How a strongD. What a strong( ) 29. Excuse me, when will the train _______?A. arrive atB. get toC. reachD. arrive( ) 30. “I’ll do it tomorrow.” “________ it today?”A. Why not to doB. Why don't do C Why not do D. Why do you do二、用所给的动词填空10分1. Millie hopes ___________ the Palace Museum. ( visit)2. “Stop ________! Mr. Li is coming.” shouted Sandy. (talk)3. If you study hard, you ___________ English well. (learn)4. Look! The children ____________ in the river. (swim)5. Remember ___________ off the light when you leave. (turn)6. He enjoyed ___________ TV very much. (watch)7. _________ up now , or you’ll be late for school. (get)8. The teacher told us ___________ any noise in the classroom. ( not make)9. He agreed _________ at the meeting. (speak)10. They ____________ to Beijing last week. (fly)三、任务型阅读What do you think of the most important inventions in the world? The TV? The printing? The telephone? Or the computer? A report shows that they are not the only important inventions. Here are three other important inventions.One of the simplest in ventions is the toilet. Before toilets, waste ran into rivers from people’s houses. Illnesses were common in big cities, and it was often difficult to find clean drinking water.Animal food is another important invention. Before the invention, most animals were killed every autumn because there was not enough food for them in winter. After hay became a kind of common animal food, animals could live through the long winter.The third great invention is glasses. Glasses help people read, write and do “close work” after the age6. __________7. __________8. __________9. __________ 10. _________四、用所给单词的适当形式填空：（15%)1.Watching TV is better than________________ (做) housework.2.I’m fond of ___________(自然科学)because it is very useful.3.English is one of the most important _________（科目）in high schools4.We always have a great time ____________ (chat) with each other.5.I brush my teeth ________ (two) a day.6.The_______（长度）of the Changjiang River is about 6300 kilometres.7.My mum can cook _________ (味道好的) meals.8.What is your __________ (理想的) school like?9.Of all the foreign ________(语言), English is the most popular in China.10.I can cook for ______ ( 我).11.My mother makes me healthy and _______ ( 好吃的) meals.12.The students in the USA have __________ (少)homework than the students in Britain.13.English is one of the most important _________ (语言) in high schools14.He is a true friend. I __________ (相信)what he says.15.I study at a ________(混合) school in Dongtai.16.Wang Lin got the first place in the English word ___________ (竞赛) .17.I hope you can give me some _________ (建议) on how to learn English well .18.He is a very clever boy , he can answer the teachers’ questions _________ (正确地).19.He is 1.75 metres in ________ (高度), he is the tallest boy in our class.20.In England, we call it “autumn”, but in America, they call it “__________”.21.Who is _________ ( lazy), Hobo or Eddie?22.Thank you for _________ (tell) us your ideal school.23.Of all the things, the one on the left is the __________ (bad).lie is a good student. She is in the_______________ ( nine ) grade this term..25.I think swimming is much ___________ (easy) than diving.26.Thank you for _________ (tell) us your ideal school.27.Of all the things, the one on the left is the __________ (bad).lie is a good student. She is in the_______________ ( nine ) grade this term.29.I know something about the film. Can you tell me __________ (much)?30.English is a very _________ (use) language in the world today.31.We must speak English as often as p____________.32.Did he and you enjoy y______________ yesterday?33.L___________, the man didn’t hurt himself.34.Her father often r___________ letters from her last year.35.I w__________ when he will leave for Beijing.五、根据短文内容和首字母提示填入单词,每空一词(10%)AI always feel tired after eight classes a day, so my dream school s__1___ at 8:30 a.m. and f___2__ at 3:30 p.m. There are four l___3____ in the morning and two in the afternoon. We can choose our f__4___ lessons to learn. We can s__5____ more time doing some outside reading. The students do after-school a__6____ for one and a half hours every day. We n eedn’t do a lot of homework. We are all happy to stay at school.Besides that, my dream school looks l__7___a big garden. There are many kinds of flowers around the modern buildings. Sweet perfumes are diffused all around. If I want to have a rest, I can lie on the grass, listen to m__8____ by the lake or look out at the flowers from the classroom windows.The teachers here are kind and helpful. They are not only our teachers but also our good friends. The students are polite and f__9____. We all know how to keep our school clean and tidy. There is no litter around the campus.I love my d__10_____ school. We will grow up to be happier there.1.__________2. __________3. __________4. __________5. __________6. __________7. __________8. __________9. __________ 10. __________BMr. Zhou and his students are on the train. Everyone is e_1 .They’ll arrive in Shanghai. Now, they are on their w__2__to their sister school by b 3 . The school is not far f 4 their hotel. Mr. Zhou becomes more excited. He is from Shanghai. His parents and his friends will be glad to s_5_ him. He and his students are t___6____ about their plan in the bus. First, they will study in their sister school f 7 months and then they will see some i 8 places in Shanghai. About four months l 9 , they’ll go back t10 Nanjing.1.__________2. __________3. __________4. __________5. __________6. __________7. __________8. __________9. __________ 10. __________六、完成句子。