初二阶段性测试
八年级上语文阶段性测试卷(含答案)

八年级语文阶段性测试试卷(附答案)(考试时间共120分钟,试卷满分为120分)班级 _________ 学号 ________ 姓名 __________ 成绩 ___________一、积累与运用(共30分)(一)选择题(12分)1.下列词语中加红字的读音都正确的一项是()A. 拂晓(fú)提防( dī)瞥见(piě) 文绉绉( zhōu )B. 诘问( jié)奔丧( bèn )愧怍( zuò)人头济济( jǐ)C. 伎俩(jì)克扣( kè)珐琅( fà)转弯抹角( mò)D. 疮疤(chuāng)脂粉( zhǐ)吊唁( yàn )大庭广众( tíng )2.下列词语中没有错别字的一项是()A. 霹雳骷髅唏嘘高屋建翎B. 焦灼阻遏箱箧气势磅礴C. 地窖噩耗尴尬微不足到D. 烦燥鞠躬荒谬长途跋涉3.选词填空,最恰当的一组是()①总而言之,请假设人类___________的某种令人眼花缭乱的洞府,其外貌是神庙,是宫殿,那就是这座名园。
②纳粹将其所有的愤怒___________地发泄在这个温和的小城里。
③___________黑暗的地母呵,愿在你怀里永安她的魂灵!④但他终于不放心,怕茶房不__________;颇踌躇了一会。
A. 理想残酷仁厚妥当 B.理想残忍仁慈妥当C. 幻想残忍仁慈妥帖 D.幻想残酷仁厚妥帖4. 下列作品、作家及所生活的时代(或国籍)搭配不正确的一项是()A.《桃花源记》—陶渊明—东晋B.《就英法联军远征中国给巴特勒上尉的信》—雨果—英国C.《蜡烛》—西蒙诺夫—苏联D.《爱莲说》—周敦颐—北宋5.下列词句中加红字解释都正确的一项是()A.①寻向所志(寻找) ②寻病终(竟然)B. ①遂迷,不复得路(终于)②遂与外人间隔(结果)C. ①鸡犬相闻(听见)②闻有此人(听说)D.①不足为外人道也(被)②武陵人捕鱼为业(作为)6. 下列选项中加红成语使用不当的一项是()A. 鬼子们拍打着水追过去,老头子张皇失措,船却走不动,鬼子紧紧追上了他。
2023—2024学年度第二学期阶段性学习效果评估八年级物理试题含答案解析

2023—2024学年度第二学期阶段性学习效果评估八年级物理试题含答案解析一、单选题(共40 分)1. 下列物体的质量,发生了变化的是()A.冰块全部熔化成水B.铝块拉成铝线C.将月壤带到地球D.将菜刀刃磨薄【答案】D【解析】A.冰块熔化成水,状态发生变化,但质量与状态无关,所以质量不变,故A不符合题意;B.铝块拉成铝线,形状发生变化,但质量与形状无关,所以质量不变,故B不符合题意;C.将月壤带到地球,位置改变,但质量与位置无关,质量不变,故C不符合题意;D.将菜刀刃磨薄,所含的铁减少了,所以质量减少,故D符合题意;故选D。
2. 镁合金被誉为“21世纪绿色工程材料”,其密度仅有钢铁的四分之一,还具有强度高、导电性好、耐腐蚀等特性。
下列物体不适合用该材料制作的是()A.自行车的车架B.平板电脑外壳C.起重机配重D.仪器中的电子元件【答案】C【解析】ABD.由于镁合金密度小,且强度高、导电性好、耐腐蚀,因此自行车的车架、平板电脑外壳、仪器中的电子元件均可使用镁合金制作,故ABD不符合题意;C.由于镁合金的密度相对较小,仅有钢铁的四分之一,因此同样体积下,使用镁合金做的配重会比使用钢材做的轻很多,无法达到相同的配重效果,因此起重机配重不适合使用镁合金。
故C 符合题意。
故选C。
3. 用带正电的玻璃棒分别靠近甲、乙两轻小物体,现象如图所示,由此可判断A.甲可能不带电B.乙一定不带电C.甲一定带负电D.乙可能带负电【答案】D【解析】由题意知带正电的玻璃棒和甲物体排斥,故甲一定带正电;带正电的玻璃棒和乙物体相互吸引,故乙可能带负电,也可能不带电,故D符合题意,ABC不符合题意。
故选D。
4. 下列有关对物质世界的认识正确的是()A.太阳是宇宙的中心B.香气扑鼻说明分子在不停地运动C.分子是不可再分的最小粒子D.用摩擦的方法可以创造电荷【答案】B【解析】A.宇宙是由无数恒星组成的,太阳只是其中一颗,太阳不是宇宙的中心,故A错误;B.我们能闻到香味属于扩散现象,说明香气分子在不停的做无规则运动被我们呼吸到,故B正确;C.物质由分子组成,分子由原子组成,故C错误;D.摩擦起电的实质是电荷的转移,不会创造电荷,故D错误。
八年级物理上册(新)阶段性测试试题(一、二章) B卷(含参考答案)

八年级 物理(上) 人教版阶段性测试题(一、二章) B 卷一、选择题(36分)1、在学校组织的文艺汇演中,小希用二胡演奏了《二泉映月》,如图所示。
演奏过程中,她不断变换手指在琴弦上的位置,其目的是改变( )A 声音的响度B 声音的音色C 、声音的音调D 、琴弦的振幅2、(2018.武汉)如图所示,在筷子上捆一些棉花,做一个活塞,用水蘸湿棉花后插入两端开口的竹管中,用嘴吹管的上端,可以发出悦耳的消音。
上下推拉活塞,并用相同的力吹管的上端时,下列说法错误的是( )A 、哨音是由管内空气振动产生的B 、哨音是通过空气传到另人耳朵的C 、向上推活塞时,吹出的哨音响度会变大D 、向下拉活塞时,吹出的哨音音调会变低3、(2018.成都)近来共享电动汽车成为人们低碳出行的交通工具,某共享汽车30min 行驶20km ,则该车的平均速度为( )A 、40km/hB 、1.5km/hC 、15m/sD 、40m/s4、如图所示,将一把钢尺紧按在桌面边缘,一端伸出约为尺长的一半,拨动钢尺,听它发出的声音,并观察它的振动情况,然后减小钢尺伸出长度约为尺长的1/4,再次实验,得到的结论是( )A 、声音变大B 、频率变高C 、振动变慢D 、响度变小5、(素养题)如图是常用的5号电池的示意图,其型号的另一种表示方法为“14500”,前两位数是直径,后三位数是高度,该型 号电池的高度为( )A 、14mmB 、145mmC 、500mm D/50.0mm6、下列做法中属于从噪声的接收这一环节来防治噪声的是( )A 、在摩托车上安装消声器B 、在市区内禁鸣汽车喇叭C 、室内打靶时要佩戴耳罩D 、用吸音材料来装饰内墙7、如图所示为我国民族吹管乐器――唢呐,用它吹奏名曲《百鸟朝凤》时,模仿的多种鸟儿叫声悦耳动听,让人仿佛置身于百鸟争鸣的森林之中。
善于唢呐,下列说法正确的是( )A 、用不同力度吹奏,主要改变声音的音调B 、吹奏时按压不同位置的气孔,主要改变声音的响度C 、唢呐前端的喇叭主要改变声音的音色D 、唢呐模仿的鸟儿叫声令人怜悯,是乐音8、为了监督司机是否遵守限速规定,交通管理部门在公路上安装了超声测速仪。
人教版英语八年级上册 阶段性测试(Unit 1-4 ) 试题

2020-2021学年上学期八年级阶段性测试(Unit1-4)第一卷(60分)一、单项选择(15分)1.—What are you going to give your mother for her birthday?—I’m not sure.But I’ll buy her________.A.something specialB.anything specialC.special somethingD.special anything2.I didn’t go to the mountains________the bad weather.A.soB.because ofC.becauseD.but3._______is easy for me________friends.A.That;to makeB.It;makesC.It;to makeD.This;make4.I have________homework to do and I’m________tired now.A.too much;much tooB.much too;too muchC.too many;too muchD.many too;much too5.It’s cold,so we decided________at home.A.stayB.to stayC.stayingD.stayed6.Although he is very old,________he works very hard.A.soB.butC.andD./7.Xiao Zhang________watches TV.He likes going online.A.hard everB.hardly everC.doesn’t hard everD.doesn’t hardly everrry helps to________the best in me.A.bring outB.care aboutC.be up toD.have to do with9.My parents are in good________.They are pretty________.A.health;healthB.healthy;healthyC.health;healthyD.healthy;health10.—________do you surf the Internet,Kate?—Not often,twice a month.A.How longB.How oldC.How oftenD.How many times11.Eighty percent of the teachers________women teachers in our school.A.isB.areC.beD.was12._______of my parents______teachers.A.All;areB.Both;isC.Both;areD.None;are13.I will have_______holiday.A.three weeksB.three-weeksC.three week’sD.three-week14._______you study,_______your grades are.A.Hardest;bestB.The harder;the betterC.The hardest;bestD.Hard;the best15.You don’t need a lot of friends_______they are good.A.thoughB.butC.as long asD.in fact二、完形填空(15分)One summer,three friends came to New York.They decided__16___in a hotel during the visit.But they felt___17__because their room was on the 60th floor.And for safety,the hotel closed the elevators(电梯)___18__12:00 every night.The next day,the three friends rented(租)a__19___and went out to travel__20___the city.They__21___movies,concerts(音乐会),and other things.When they returned to the__22___,it was__23___.The elevator were stopped.So they had to take the stairs(楼梯).At that time,one friend got a(n)__24___.He said, “For the first 20 floors,I will tell jokes.Then another of us will__25___smart stories for the next 20 floors.Then we will finish__26___20 floors with sadstories.”Soon,the first one__27___with his jokes,with joy,they reached the 20th floor,then the next one started__28___some smart stories,so they learned a lot when reaching the 40th floor.In the end,it was time for sad stories.The__29___one started like this, “My first___30__story is that I left the key to the door In the car.”16.A.stay B.staying C.stayed D.to stay17.A.glad B.excited C.unhappy D.cheerful18.A.in B.on C.after D.before19.A.car B.room C.train D.plane20.A.to B.on C.from D.around21.A.talked B.went C.listened D.enjoyed22.A.car B.room C.hotel D.train23.A.early B.lucky te D.good24.A.joke B.idea C.advice D.secret25.A.say B.tell C.talk D.speak26.A.others B.another C.the other D.any other27.A.starts B.starting C.started D.start28.A.asking B.telling C.saying D.speaking29.A.first B.two C.three D.third30.A.sad B.funny C.smart D.pleasant三、阅读理解(30分)A.A.RunningB.SwimmingC.Playing soccer32.How does Bill keep healthy?A.By getting rest regularlyB.By having meals on timeC.By keeping his body clean33.How long does Tina sleep every night?A.eight hoursB.nine hoursC.ten hours34.How any times does Mary brush her teeth every day?A.OnceB.TwiceC.Three times35.Which of the following is TRUE?A.Bill drinks milk twice a weekB.Eric takes a walk after dinner every day.C.Mary washes herself every day after getting up.B.Dear Mom and Dad,How are you?It’s after lunch,I’m writing to you from my camp.Yesterday we started our trip at 8:00a.m.The camp is only 200 miles from our home,and the school bus got us here at noon.I share a room with other three boys.Two of them know how to use computers.They’re in Mr.Green’s class.I’m learning how to use computers,so I am in Mrs.Brown’s class.I have to design(设计)my own program this week.All of the campers have to,I want to design a game.Then I can teach it to you.We must take part in two other activities every day.I am going to choose swimming and tennis.In my free time,I play games on the computer.So are most of the campers,I like camping,but the food is very bad,I dislike it.We have our breakfast,lunch and supper in a very big room.When we are eating,everyone is talking and there is a lot of noise.I have to say “goodbye”now.See you in two weeks.LoveChris.36.What activity is Chris doing at the camp today?A.having computer lessonsB.designing a computer gameC.teaching others to use computer37.How do the most campers spend their free time?A.play tennisB.go swimmingC.play computer games38.How was the big dining room when the campers are having meals?A.noisyB.dirtyC.tidy39.What can we learn from the passage?(1)Chris likes the food at the camp(2)Chris will spend half a month at the camp(3)there were four boys living in Chris’s room(4)It took Chris about four hours to get to the campA.1/2/3B.1/3/4C.2/3/440.Why did Chris write to his parents?A.to tell them his camp lifeB.to teach them a computer gameC.to show then how terrible the food wasC.Basketball is one of the most popular sports in the world.It is a team sport.When two teams play basketball,both of them try to get points against one another.How do they get points?They throw a ball through a 10-feet-high basket under some rules.The team with more points at the end of the game wins.In early December,1891,the basketball game was invented by Dr.James Naismith.He was a Canadian PE teacher in Springfield,USA.In the beginning,he just wanted to find an indoor game for his students in winter.He wrote the basic rules.He also set a basket onto a 10-feet-high wall.The players got one point by shooting the brown soccer ball into the basket.He called the new game “basket ball”.This new kind of sports soon became one of the most popular sports in North America.Now basketball is very popular all over the world.In the United States,NBA basketball matches are the most popular events.41.What does the underlined word “points”mean in Chinese?A.要点B.分数C.指着D.规则42.How do the basketball players get points?A.by throwing a ball through a basketB.by kicking the ball into a holeC.by getting the ball from the players from the other teamD.by throwing a ball to the PE teacher43.In what time of the year was the basketball game invented(发明)?A.in springB.in summerC.in winterD.in autumn44.About Dr.Naismith,which of the following is NOT TRUE according to the passage?A.he wrote the rules for the gameB.he was the best basketball player in 1891.C.he wasn’t born in the United StatesD.he was a PE teacher in Springfield45.What’s the best title for the passage?A.The most Popular sport in the worldB.The life of Dr.James NaismithB.How to play basketball well D.The history of basketballD.What do we do when we go camping?First,we work out a plan.We take food,clothing,a knife,and things for cooking and eating.We take things to keep us away from insects(虫子)and the sun.Then we put everything into the car and we drive to the woods(树林,林地).We look for a place for campers(露营者)and we look for a good place for our tent(帐篷).The place should have a lot of moving air.This will keep some insects away.High land with water on both sides of it is good.Then we put up put up our tent.We put everything into the tent,and we are ready for fun.We can swim in the lake,walk in the woods,climb a mountain,row a boat,or go fishing.In the evening we come back to the tent,we build a big fire because it can keep the insects away.We sit around the fire and talk.We may tell interesting stories or we may sing songs.At night we lie down on the grass.We can look up at the stars.It is a busy day,so we try to go to sleep early.Everything is dark.Everything is quiet.We hope we won’t hear music from the radio in the next tent.We hope it won’t rain.46.Before going camping,we should first______.A.draw up a planB.take some foodC.take things to keep us warmD.take something for cooking and eating47.We go camp______.A.by busB.by carC.by bikeD.on foot48.Campers can take part in_______activities.A.one or twoB.only a fewC.manyD.two or three49.In the evening we build a fire because______.A.it is cold at nightB.it can keep us warmC.it can keep the insects awayD.it is dark and quiet50.The campers like to_____at night.A.hear music from the radioB.go to sleep earlyC.have rainD.be busy第二卷(60分)四、(A)根据首字母及句意填空(20分)st weekend was very________(令人愉快的)for me.52.Our teacher always tell us to do many free time a________after class.53.The twin sisters have few d________(差别).54.When it rains,we should take u________with us.55.It’s twelve now,Everyone is very h________(饥饿的).Let’s have lunch.56.—What’s your favorite p________?—Animal world.57.Do you know the r________(结果)of the test?58.Go t________the park,you will see a big lake.59.If you have a toothache,you should see the d________.60.Now________(杂志)are less popular than TV now.61.I don’t like English.________(然而)I have to learn it well.62.Do you want to join the piano c________(比赛)?63.Heimingway was a f________(了不起的)writer.64.Some people are t________in music.65.It’s n________to learn English well.66.Who b________(打破)the window?67.The girl is s________(相似的)to her mother.68.You can find some________(信息)about New COVID-19 on the Internet.69.Which is the w________(最差的)clothes store in town?70.The boy is old e________to go to school.(B)适当形式填空(10分)71.His mother often makes him________(clean)his room on weekends.72.Tom doesn’t like watching TV and he watches it________(two)a week.73. —Would you like________(anything)to drink?—A cup of tea.Thank you.74.Lucy and her sister were the________(win)of the tennis game.75.He is________(funny)than the other students in his class.76.You must look after________(you)and keep healthy,children.77.His uncle________(fly)to New York City last week.78.There are many tall________(build)in the city.79.The film is________(wonder).80.It’s good to relax by________(use)the Internet or watching game shows.五、短文填空(10分)Who is your hero?Why do you like him?Cool looks?Money?A lot of talents?I think Helen Keller is one of the greatest person all over the world.Helen is a famous___81__(write)and educator in America.When Helen was a baby,she was very__82___(luck).She couldn’t see___83__hear.As time passed,things got so bad__84___she couldn’t understand anything.But she had a___85__(great)mind than most of the people.With the help of Miss Sullivan,Helen went to school when she got__86___(old).Helen Keller was both brave__87___wonderful.She spent her life___88__(help)many blind and deaf people.She died in 1968 because___89__bad illness.Don’t stop___90__(try).Helen Keller said so .From her true story,I know whatever we do and how hard it is,we will never give up.81.___________ 82.___________ 83.___________84.___________ 85.___________ 86.___________ 87.___________ 88.___________ 89.___________ 90.___________六、任务型阅读(10分)Liu Wei is very famous in China because he can play the piano with his toes(脚趾).One day when Liu Wei was only 10 years old,he played a game with some friends.He lost both his arms because of electricity(电).Liu Wei was very sad when his arms were cut off after the accident(意外事故).But soon he had to make a choice.“For people like me,there were only two choices.One was to give up all the dreams,which would cause a quick death.The other was to work hard without arms to live an excellent life.”says Liu Wei.Liu’s dream was to be a pianist.His excellent life included a show on China’s Got Talent(《中国达人秀》)and a wonderful performance(演奏) playing the beautiful Marriage D’amour with his two feet on the piano.Liu Wei learned to play the piano with his feet.And teaching himself to play the piano with his feet was very hard.Many times he wanted to give it up,but his parents went on encouraging(鼓励)him and he wanted to make his parents proud.Maybe you can not believe that Liu Wei is able to play well with his toes.The audience(观众)were deeply moved and very excited when they watched his performance.91.Why is Liu Wei very famous in China?92.How old was Liu Wei when he lost his arms?93.Was Liu Wei very sad when both his arms were cut off?94.Who encouraged Liu Wei to play the piano?95.How did the audience feel when they watched Liu’s performance?七、书面表达(10分)你们学校校报小记者John就日常活动采访了你的同学David,下面是他根据采访内容所列的提纲,请你根据下表提供的有关信息,写一篇80词左右的英语报道,介绍一下你的同学David的日答案一、单项选择1-5:ABCAB6-10:DBACC11-15:BCDBC二、完形填空16-20:DCCAD21-25:DCCBB26-30:CCBDA三、阅读理解31-35:CBBBB36-40:ACACA41-45:BACBD46-50:ABCCB四、(A)单词填空51.enjoyable52.activities53.differences54.umbrellas55.hungry56.program57.result58.through59.dentist60.magazines61.Howeverpetition63.fantastic64.talented65.necessary66.broke67.similarrmation69.worst70.enough(B)适当形式填空71.clean72.twice73.something74.winner75.funnier76.yourself77.flew78.buildings79.wonderfuling五、阅读填空81.writer 82.lucky83.or84.that85.greater86.older87.and88.helping89.of90.trying六、任务型阅读91.Because he can play the piano with his toes.92.When he was only 10 years old.93.Yes,he was.94.His parents.95.They were deeply moved and very excited.。
2022年秋季学期学生综合素养阶段性评价八年级数学试题卷答案

2022年秋季学期学生综合素养阶段性评价八年级数学参考答案及评分标准一、选择题(本大题共12小题,每小题只有一个正确选项,每小题3分,满分36分)题号答案1A2D3D4C5B6C7C8D9A10D11B12A二、填空题(每小题3分,共18分)13、4.5×10-714、3(m +2)(m -2)15、x ≠316、197、1218、2∶3∶4三、解答题(共6题,共46分)19.(本题满分8分)(1)解:原式=2+1+3……………………3分=6……………………………4分(2)解:方程两边同乘(x -2),得:3(x -2)-(2+x )=-2,……………1分解得x =3………………………………………………………2分检验:当x =3时,x -2≠0……………………………………3分∴原方式方程的解为:x =3……………………………………4分20.(本题满分6分)解:(1)∵AC ∥DE ,∴∠ACB =∠DEF ,……………………………………1分∵BE =CF ,∴BE +CE =CF +CE ,即BC =FE ,………………………………………2分在△ABC 和△DFE 中,ìíîïï∠A =∠D∠ACB =∠DEF BC =FE,∴△ABC ≌△DFE (AAS)。
………………………4分(2)∵BF =12,EC =6,∴BE +CF =12-6=6,……………………………………5分∵BE =CF ,∴BE =CF =3,∴BC =BE +EC =3+6=9。
…………………6分21.(本题满分7分)(1)图略……………………………2分(2)S△A1B1C1=4×5-12×2×4-12×1×4-12×2×5=9……………………5分(3)(0,3)…………………………………7分22.(本题满分8分)(1)解:设乙的进价为每盒x元,根据题意,得8000x=6000x-10,…………………………2分解得x=40,…………………………3分经检验,x=40是原方程的根,且符合题意,40-10=30(元),……………………4分答:甲的进价为每盒30元,乙的进价为每盒40元;…………………………5分(2)解:设该商家购进m盒乙,根据题意,得40m+30(120-m)≤4000,…………………………6分解得m≤40,…………………………7分答:该商家最多可购进40盒乙。
八年级数学上阶段测试卷一

一、选择题(每题3分,共30分)1. 下列各数中,正数是()A. -3.14B. 0C. -2D. 22. 下列图形中,是轴对称图形的是()A. 矩形B. 三角形C. 圆D. 平行四边形3. 下列各式中,正确的是()A. 3a + 2b = 5a - 2bB. 3a - 2b = 5a + 2bC. 3a + 2b = 5a + 2bD. 3a - 2b = 5a - 2b4. 已知一个等腰三角形的底边长为6cm,腰长为8cm,那么这个三角形的周长是()A. 14cmB. 16cmC. 18cmD. 20cm5. 下列各数中,是2的倍数的是()A. 0.4B. 1.6C. 2.5D. 3.26. 下列各式中,正确的是()A. a^2 = b^2B. a^2 = -b^2C. a^2 = b^2 ± 2abD. a^2 = b^2 + 2ab7. 已知一个长方体的长、宽、高分别为2cm、3cm、4cm,那么这个长方体的体积是()A. 24cm^3B. 26cm^3C. 28cm^3D. 30cm^38. 下列各式中,正确的是()A. a^3 = a^2 aB. a^3 = a a aC. a^3 = a a + aD. a^3 = a a - a9. 已知一个梯形的上底为2cm,下底为4cm,高为3cm,那么这个梯形的面积是()A. 6cm^2B. 8cm^2C. 10cm^2D. 12cm^210. 下列各数中,有理数是()A. √4B. √9C. √16D. √25二、填空题(每题3分,共30分)11. 3的倒数是__________,2的平方是__________。
12. 如果a=2,那么a+1的值是__________。
13. 已知一个圆的半径为5cm,那么这个圆的直径是__________cm。
14. 一个长方形的长是8cm,宽是6cm,那么这个长方形的周长是__________cm。
2022-2023学年八年级数学上学期第一次阶段性检测卷二原卷

2022-2023学年八年级阶段性检测卷数学(考试时间:120分钟试卷满分:120分)注意事项:1.本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。
2.回答第Ⅰ卷时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。
如需改动,用橡皮擦干净后,再选涂其他答案标号。
写在本试卷上无效。
3.回答第Ⅱ卷时,将答案写在答题卡上。
写在本试卷上无效。
4.测试范围:第一章、第二章。
5.考试结束后,将本试卷和答题卡一并交回。
第Ⅰ卷一、选择题(本题共12小题,每小题3分,共36分)。
1.下列长度的各组线段中,能组成三角形的是()A.3cm,12cm,8cm B.6cm,8cm,15cmC.2.5cm,3cm,5cm D.6.3cm,6.3cm,12.6cm2.如果一个三角形的三条高的交点恰好是这个三角形的一个顶点,那么这个三角形是()A.锐角三角形B.直角三角形C.钝角三角形D.不能确定3.如图,工人师傅砌门时,常用木条EF固定长方形门框ABCD,使其不变形,这样做的根据是()A.两点之间的线段最短B.两点确定一条直线C.三角形具有稳定性D.长方形的四个角都是直角4.如图,过△ABC的顶点A,作BC边上的高,以下作法正确的是()A .B .C .D .5.一个三角形的三个内角度数之比为4:5:9,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.斜三角形6.根据下列已知条件,能唯一画出△ABC的是()A.AB=3,BC=4,AC=8B.AB=4,BC=3,∠A=30°C.∠A=60°,∠B=45°,AB=4D.∠C=90°,AB=67.如图,将两根钢条AA′、BB′的中点O连在一起,使AA′、BB′能绕着点O自由转动,就做成了一个测量工具,由三角形全等可知A′B′的长等于内槽宽AB,那么判定△OAB≌△OA′B′的理由是()A.SAS B.ASA C.SSS D.AAS8.用一批完全相同的正多边形能镶嵌成一个平面图案的是()A.正五边形B.正六边形C.正七边形D.正八边形9.如图,△ACB≌△A′CB′,∠BCB′=30°,则∠ACA′的度数为()A.20°B.30°C.35°D.40°10.如图,给出下列四组条件:①AB=DE,BC=EF,AC=DF;②AB=DE,∠B=∠E,BC=EF;③∠B=∠E,BC=EF,∠C=∠F;④AB=DE,AC=DF,∠B=∠E.其中,能使△ABC≌△DEF的条件共有()A.1组B.2组C.3组D.4组11.如图,将纸片△ABC沿DE折叠,点A落在点F处,已知∠1+∠2=100°,则∠A的度数等于()A.70°B.60°C.50°D.40°12.如图,C为线段AE上一动点(不与点A,E重合),在AE同侧分别作正三角形ABC和正三角形CDE,AD与BE交于点O,AD与BC交于点P,BE与CD交于点Q,连接PQ.以下四个结论:①AD=BE;②PQ∥AE;③AP=BQ;④∠AOB=60°.其中正确的结论个数是()A.1个B.2个C.3个D.4个第Ⅱ卷二、填空题(本题共6题,每小题3分,共18分)。
初二数学阶段性测试试卷

一、选择题(每题5分,共20分)1. 下列各数中,有理数是()A. √9B. √16C. √25D. √-92. 若a、b为实数,且a+b=0,则下列选项中正确的是()A. a=0,b=0B. a=0,b≠0C. a≠0,b=0D. a≠0,b≠03. 下列各式中,分式有()A. 2xB. x+1C. x/(x+1)D. 2x^24. 已知x^2+2x+1=0,则x的值为()A. 1B. -1C. 2D. -25. 下列函数中,y是x的二次函数是()A. y=x^2+2x+1B. y=x^2-2x+1C. y=2x^2-4x+2D. y=3x^2-2x+1二、填空题(每题5分,共25分)6. (1)若x=3,则x^2-2x+1=______;(2)若a+b=5,ab=6,则a^2+b^2=______;(3)若x=2,则x^2+3x-4=______;(4)若a=3,b=-2,则a^2-ab+b^2=______。
7. (1)若m^2-3m+2=0,则m的值为______;(2)若x^2+5x+6=0,则x的值为______;(3)若x^2-4x+4=0,则x的值为______;(4)若2x^2-5x+3=0,则x的值为______。
8. (1)若y=2x-1,当x=3时,y=______;(2)若y=3x+2,当x=1时,y=______;(3)若y=4x-3,当x=2时,y=______;(4)若y=5x+4,当x=0时,y=______。
三、解答题(每题10分,共40分)9. (1)已知a、b为实数,且a+b=5,ab=6,求a^2+b^2的值;(2)若x^2-5x+6=0,求x的值。
10. (1)已知y=2x+3,当x=2时,求y的值;(2)已知y=3x-2,当x=1时,求y的值。
11. (1)已知m^2-6m+9=0,求m的值;(2)已知x^2+4x+4=0,求x的值。
12. (1)已知y=5x+2,当x=3时,求y的值;(2)已知y=6x-3,当x=1时,求y的值。
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2014—2015学年度第一学期期末初二阶段性练习英语试题(卷)(Unit1-Unit2)时间:80分钟分值:120分命题人:柴小琪I、单项选择。
(本题共有15题,每小题2分)( )1. —_________________ with him?---He has a headache.A. What’s matterB. What’s the wrongC. What’s the matter ( )2. ___his surprise, she succeeded in climbing up the high mountain.A At B. To C. In( )3 . Lucy is ________ girl . She is very happy at school .A. a eight-year-oldB. an eight-year-oldC. an eight-years-old( )4. To our ________ ,we saw such a________ result .A. surprise , surprisingB. surprised , surprisingC. surprised , surprising ( )5. — What did you see?— I saw many boys________ games near the river.A. playedB. playingC. plays( )6 . My father often cooks some delicious food _________for us at home.A. herselfB. ourselvesC. himself( )7.Pollution is a serious problem. Scientists _____ some good ways to save it.A. come up withB. come onC. come out( )8. Don’t worry about me ,I will get used to _____ here soon .A.liveB. livingC. lived( )9.The rich man decided to _____ everything he has to charity after his death .A.hand outB. give upC. give away( )10. It rained ____ hard outside ____ we couldn’t go out .A.too, toB. so , thatC. such , that( )11. Thanks ___ the kind man , the doctor saved the old man _______ time .A. for ,inB. to ,inC. to , on( )12. How dirty your room is! You must.A. to clean it upB. clean it upC. clean up it( )13.You mustn’t smoke here.Look at the ____.It says “No smoking”A.NoticeB. signC. plan( )14. They have to leaving for Beijing because of the heavy snow.A. put offB. put outC. put on( )15. Mr. White invited John to the concert __________.A.cheering her upB. cheer her upC. to cheer her upII、完型填空。
(本题共有15题,每小题1分)Mary was ill yesterday. She went to see a doctor. “Doctor. I’m not feeling16at the moment, ”she said, “Every time I do my homework 17 night, I feel18. If I walk to school 19 , I have to sit down and20 for ten minutes. ”The doctor looked21Mary 22 . At last he said, “23serious, but I’m afraid you are24too much. ”“I don’t understand, what do you mean? ”asked Mary. “I mean you eat too much25, ”said the doctor. “Oh! You mean I’m too26 That’s a problem. ”said Mary. “What should I do if I don’t want 27 ? ”“The answer is easy, ”said the doctor. “If you want to be 28 you29eat a lot of food and you also should take more30. ”( )16. A. good B. bad C. well( )17. A. in the B. at C. on( )18. A. hungry B. thirsty C. tired( )19. A.everyday B. every day C. every night( )20. A. rest B. lie down C. stand( )21. A. after B. over C. like( )22. A.careful B.carefully C. care( )23. A. Too B. Not C. Nothing( )24. A. drinking B. sleeping C. eating( )25. A. ice cream B. fruit C. food( )26. A. fat B. healthy C. stressed out( )27. A. be healthy B. to heavy C. to be heavy( )28. A. thin and heavy B. thinner and heavier C. more thinner and heavier( )29. A. can B. should C. shouldn’t( )30. A. homework B. sports C. exerciseIII、阅读理解。
(本题共30分,共15小题)AIt’s important for us to be healthy. But how can we keep healthy? First,you should eat fruit and vegetables three or four times a week. Then eat some tofu every day because it’s good for people, both the young and the old. Milk is also necessary(必要的),especially for women. So you should have milk twice & day. It can help you to be strong. Next, doing more exercise is better. You can do morning exercises or evening exercises. After supper you should take a walk.( )31. You should eat_______ three or four times a week.A. fruit and fishB. vegetables and muttonC. fruit and vegetables( )32. Tofu is good for ______.A. young peopleB. old peopleC. young and old people( )33. Why do people have milk?A. It,s delicious.B. It can help you keep strong.C.It’s bad for you.( )34. You should have milk ________ .A. four times a dayB. five times a weekC. twice a day( )35. The passage mainly tells us__________.A. how to keep healthyB. what health isC. why health is importantBDo you know the story about Vince? It was a true story. Vince was an English boy and he was eight years old. He didn't like soap or water. Three or four times a day his mother said to him, “Vince, your hands are very dirty again.” Go and wash them. ” But Vince never washed them well. He only put his hands in the water for a few seconds and then took them out again.Vince’s uncle and aunt lived in another city. One day they came to stay with Vince’s parents, and they brought their small son, Toby, with them. Toby was seven years old and he didn’t like soap or water, either. The boys sat with their parents for a few minutes and then they went outside. When they were playing, Vince looked at Toby's hands and then went back to Toby’s parents and said proudly (骄傲地),“Toby’s hands are dirtier than mine, ”“Of course th ey are,”Toby said angrily. “You are one year older than I am, ”( )36. Vince’s mother asked him to ______three or four times a day.A. wash his handsB. do his homeworkC. clean his bedroom( )37.When Vince saw Toby’s hands, he felt ________.A, sorry B. proud C. sad( )38.Vince’s hands were a little______than Toby’s.A. dirtierB. cleanerC. bigger( )39From the story we know that_______ .A. Vince liked soap and water, but Toby didn’tB. Toby liked soap and water,but Vince didn’tC. Vince and Toby didn’t like soap or water( )40. How many people are there in the story?A. Four.B. Five.C. Six.CHave you been asked for money by some disabled beggars(乞丐) while you’re enjoying shopping? Do you have any pity on them who are so poor and lonely or do you just feel afraid of their terrible shapes? As one of the most special groups, disabled people’s living conditions—not only their material(物质的) conditions, but their mental(精神的) world, really need improvement.The treatment for disabled people should go like this: First, don’t look down upon them. Don’t be afraid of looking at the terrible shapes of the disabled. Try to treat them equally. Because they are a part of the society(社会), we can’t discard(抛弃) them. The second is to help them as much as we could. If you can be a volunteer and do some work for the disabled people, that would be very nice. That does help not only to the disabled people but also to yourself because you will feel good after your kind action. If every one of us gives a little love, the world will become a beautiful wonderland!( )41. From the passage we can see that _______.A. disabled people are poor, but they are happyB. all disabled people ask for money from those who are shoppingC. disabled people’s living conditions are not good( ) 42. The underlined word “equally” means “ _______” in Chinese.A. 平等地B. 确切地C. 正确地( )43. Most disabled people are begging(乞讨) along the streets because _______.A. it’s their jobB. they want to make a living in this wayC. they are a part of the society( )44. People have pity on disabled beggars because _______.A. they are homelessB. they are poor and lonelyC. they have terrible shapes ( )45.Which of the following statement is TRUE ?A. The disabled like to beg in streets.B. Disabled beggars cannot work to make a living .C. Disabled beggars are not usually treated equallyIV、补全对话(从方框内选择恰当的句子补全对话,其中有两项是多余的)(10分)A. And you should drink lots of water.B. Do you have a fever?C. What’s the matter, young man?D. You have a toothache.E. I cough badly and have a very sore throat.F. You’ll feel better soon.G. You’re welcome.A: Good morning, doctor.B: Morning. 46A: I’m not feeling well. 47B: How long have you been like this?A: For about two days.B: 48A: No, I took my temperature an hour ago and it seemed all right.B: Let me check you over. Now open your mouth, and say “Ah. . . ”I think yo u have a cold. A: Is it serious?B: Don’t worry. You need to take some medicine. 49 and have a rest. 50A: Thank you46._______ 47. ______48. ________ 49 ________ 50. _______V、任务型阅读。