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(人教新目标)2022-2023学年度第二学期八年级英期中限时专项训练-阅读还原

(人教新目标)2022-2023学年度第二学期八年级英期中限时专项训练-阅读还原

(人教新目标)2022-2023学年度第二学期八年级英期中限时专项训练-阅读还原(限时30分钟,100分)1.根据短文内容,从短文后所给的选项中,选出能填入空白处的最佳选项。

选项中有两项为多余选项,并将所选答案涂到答题卡的相应位置上。

Once there was a young man. He sold fruits at the market(市场) every day in the town.____1____ Because he believes that the earlier he got to the market, the more he could sell. This made other sellers come to the market earlier and earlier.To get up even earlier, he thought that if he ate his breakfast at night, he wouldn’t have to eat it in the morning. ____2____ He went to bed stuffed(吃饱的).The next morning, the young man came to the market much earlier, but he was surprised to see that there were many people there. ____3____ That night, he decided to get dressed at night so that he could save time in the morning. So he went to bed with his clothes on, but in the morning some sellers were there before him again.____4____ He carried his bed to the market. That night, he lay in his bed and watched the night sky. The moon was full and he was too excited to sleep. ____5____ When morning came, the young man was so sleepy and tired that he couldn’t get up.A.That night, after he ate his dinner, he ate his breakfast.B.Then, he decided to spend the night at the market.C.He always tried to be the first seller to arrive there.D.He realized that his plan failed.E.It is hard for him to sleep.F.He never did sports.G.He made a lot of money every day.2.阅读下面对话,从对话后的选项中选出可以填入空白处的最佳选项,选项中有两项为多余选项。

2015年高考语文二轮复习限时训练:专题八 《论语(选读)》的理解和评价专题限时训练

2015年高考语文二轮复习限时训练:专题八 《论语(选读)》的理解和评价专题限时训练

专题八《论语(选读)》的理解和评价专题限时训练(时间:20分钟分值:15分)1.(2014杭州二中高三第五次月考)阅读下面四段文字,完成后面的题目。

(5分)(一)子曰:“士志于道,而耻恶衣恶食者,未足与议也。

”(二)子曰:“贤哉,回也!一箪食,一瓢饮,在陋巷,人不堪其忧,回也不改其乐。

贤哉,回也!”(三)子曰:“饭疏食,饮水,曲肱而枕之,乐亦在其中矣。

不义而富且贵,于我如浮云。

”(四)处卑贱之位而计不为者,此禽鹿视肉,人面而能强行者耳。

故诟莫大于卑贱,而悲莫甚于穷困。

久处卑贱之位,困苦之地,非世而恶利,自托于无为,此非士之情也。

(《史记·李斯列传第二十七》) (1)以上材料中所强调的儒家重要思想是: 。

(1分)解析:此题既需要理解每一则材料,又需要对前三则材料的观点进行概括,抓住这几句“耻恶衣恶食者,未足与议”“回也不改其乐”“乐亦在其中矣”,就关键字“乐”给出答案。

答案:安贫乐道(2)请简述孔子和李斯的观点的区别。

(4分)解析:根据第(1)题提供的答案,孔子提倡安贫乐道,而李斯认为“人处卑贱之位,而不想着去求取功名富贵,就如同禽兽一般”,追求功名利禄的观点可见一斑。

答案:孔子追求仁道,不以吃穿不好为耻辱,以精神的快乐填充物质的匮乏。

李斯认为卑贱是人生最大的耻辱,贫穷是人生最大的悲哀,所以极力追求利禄,持有功利主义的人生观。

参考译文:孔子说:“读书人立志于追求真理,却以穿得不好吃得不好为耻辱,那就不值得和他谈论什么了。

”孔子说:“颜回的品质是多么高尚啊!一箪饭,一瓢水,住在简陋的小屋里,别人都忍受不了这种穷困清苦,颜回却没有改变他好学的乐趣。

颜回的品质是多么高尚啊!”孔子说:“吃粗粮,喝白水,弯着胳膊当枕头,乐趣也就在这中间了。

用不义的手段得到富与贵,对于我,那些富与贵就如同天上的浮云。

”人处卑贱之位,而不想着去求取功名富贵,就如同禽兽一般,只等看到现成的肉才想去吃,白白长了一副人的面孔勉强直立行走。

人教版八年级数学下限时训练

人教版八年级数学下限时训练

初二数学限时训练(三)2013.3.19一、选择题:(每题3分,共36分) 1、在(3)5,,,2a b x x x a b x a b π-+++-,ma 1+中,是分式的有 ( ) A 、1个 B 、2个 C 、3个 D 、4个 2、下列约分正确的是( )A 、326x xx = B 、0=++yx y x C 、xxyx y x 12=++ D 、214222=yx xy3、下列函数是反比例函数的是 ( ) A 、y=3x B 、y=x36 C 、y=x 2+2x D 、y=4x+84、分式:①223a a ++,②22a b a b--,③412()a ab -,④12x -中,最简分式有( )A.1个B.2个C.3个D.4个5、无论x 取什么数时,总是有意义的分式是( ) A .122+x x B.12+x x C.133+x x D.25xx -6、能使分式122--x x x 的值为零的所有x 的值是( )A 、0=xB 、1=xC 、0=x 或1=x D.、0=x 或1±=x 7、若分式231xx -的值为正数,则( ) A 、0>x B 、0<x C 、1>x D 、1<x 8、反比例函数)0(≠=k xk y 的图象经过点(2-,3),则它还经过点 ( )A. (6,1-)B. (1-,6-)C. (3,2)D.(2,3)9、如图,一次函数与反比例函数的图像相交于A 、B 两点,则图中使反比例函数的值小于一次函数的值的x 的取值范围是( )A 、x <-1B 、x >2C 、-1<x <0,或x >2D 、x <-1,或0<x <2 10.若把分式xyy x +中的x 和y 都扩大2倍,那么分式的值( )A .扩大2倍B .不变C .缩小2倍D .缩小4倍11.一艘轮船在静水中的最大航速为30千米/时,它沿江以最大航速顺流航行100千米所用时间,与以最大航速逆流航行60千米所用时间相等,江水的流速为多少?设江水的流速为x 千米/时,则可列方程( ) A .x x -=+306030100 B .306030100-=+x x C .xx+=-306030100 D .306030100+=-x x12、在一段坡路,小明骑自行车上坡的速度为每小时V 1千米,下坡时的速度为每小时V 2千米,则他在这段路上、下坡的平均速度是每小时 ( )。

2015届高考历史二轮复习 专题限时训练(八)欧美资产阶级代议制的确立和马克思主义的诞生与实践

2015届高考历史二轮复习 专题限时训练(八)欧美资产阶级代议制的确立和马克思主义的诞生与实践

专题限时训练(八) 欧美资产阶级代议制的确立和马克思主义的诞生与实践(时间45分钟满分100分)一、选择题(每小题5分,共60分)1.(2014·某某训练)威廉·布莱克斯通(1723—1780年)在其《英国法释义》中阐述当时英国立法系统时说:“国王是议会的一部分,所以也是他适当享有立法权的理由。

宪法赋予国王‘否决’权力而非‘决定’权……君主毫无权力胡作非为,而只是‘防止’胡作非为。

当既定法律提出时,君主不得自始就擅作变动,但可以同意或反对两院提出和赞同的变动。

”下列与此相关的说法中正确的是()A.作者主X严格限制王权B.英王和议会关系“均衡”C.国王可以批准议会法案D.当时英王已“统而不治”2.(2014·某某检测)18世纪中叶英国政治家威廉·庇特说:“最穷的人,在他的寒舍里也敢于对抗国王的权威,风可以吹进这所房子……但是英王不能踏进这所房子,他的千军万马不敢进入这间门槛已经破烂的房子。

也就是‘风能进,雨能进,国王不能进’。

”这表明英国政治制度的精髓是()A.法治至上B.分权制衡C.责任内阁D.虚位君主3.(2014·潍坊模拟)观察英国内阁、议会、国王的关系图。

图中方框空白处应是()A.差额选举B.提名推荐C.直接选举D.间接选举4.(2014·某某河东区二模)学者X成等在《英国:从称霸世界到回归欧洲》中指出:“从18世纪70~80年代起,一直到19世纪30年代……英国出现了这样一幅奇特的景象:保守主义的政治与快速发展的经济同行。

”对这一时期英国保守主义政治的特征理解正确的是()A.工业资产阶级未能充分参与国家政权B.议会开始成为国家权力中心C.选举中的高额财产限制被打破D.英国的责任内阁制开始确立5.(2014·某某考前训练)有人认为:“英国政治体制确立得很早,但是因为没有刚性宪法,而只是一些宪法性的法律文件,所以真正最有生命力的就是这部条文并不复杂、也没有面面俱到的美国1787年宪法。

八年级下册物理限时训练(二)含答案

八年级下册物理限时训练(二)含答案

八年级下册物理限时训练(二)1.关于力、力和运动的关系,下列说法中不正确的是()A.施力物体一定也是受力物体B.物体不受力,运动状态一定不改变C.两个不接触的物体间一定没有力的作用D.力不能脱离物体而单独存在2.忽略空气阻力,抛出的铅球在空中运动轨迹如图所示,则下列对抛出后的铅球,分析正确的是()A.铅球受到沿运动方向的推力,在这个力作用下继续运动B.铅球受到重力和推力,在这两个力作用下继续运动C.铅球不受力,靠惯性继续运动D.铅球受到重力作用,运动状态不断发生变化3.下列现象中,不能用惯性解释的是()A.人走路时有时会绊倒B.子弹从枪膛飞出枪外后,继续向前运动C.用力将伞上的水甩掉D.地上滚动的球最终会停下来4.如图所示,跳水运动员站在跳板上静止不动,下列说法正确的是()A.跳板被压弯说明力可以改变物体的运动状态B.运动员对跳板的压力和运动员所受的重力是一对平衡力C.跳板对运动员的支持力和运动员对跳板的压力是一对平衡力D.跳板对运动员的支持力和运动员所受的重力是一对平衡力5.如图所示的各种情形中,两个力是平衡力的是()A. B. C. D.6.如图是运动员顶足球时的情景,忽略空气阻力,下列说法正确的是()A.球被顶出,说明力可以改变物体的运动状态B.顶出去的球在上升过程中,受到平衡力的作用C.球在上升过程中,受到一个向上的力D.顶出去的球最终落地,是由于球具有惯性7.下列实例中,目的是为了增大摩擦的是()A.旅行箱安装小轮子B.给自行车的车轴上机油C.自行车轴承中装有滚珠 D.自行车轮胎上制有凹凸的花纹8.如图所示,某同学沿水平方向用75N的力推箱子,下列分析不正确的是()A.若该同学没有推动箱子,箱子所受摩擦力为75NB.若箱子被推动,箱子在滑行过程中所受摩擦力大小为75N,方向水平向左C.若该同学推箱子的推力增大,箱子所受摩擦力也可能增大D.若箱子被推动,箱子在滑行过程中撤去推力,箱子会由于惯性继续运动一段时间9.秋千荡到最高点时,如果受到的力全部消失,下列现象可能会发生的是()A.继续来回摆动 B.做匀速直线运动C.保持静止状态 D.做匀速圆周运动10.下列关于惯性的说法中,正确的是()A.人走路时没有惯性,被绊倒时有惯性B.交通规则中要求司机系安全带,是为了减小司机的惯性C.物体没有受外力作用时有惯性,受外力作用后惯性被克服了D.物体的惯性与物体的运动状态及受力情况均无关11.2022年3月23日,“天宫课堂”上王亚平轻推静止的“冰墩墩”,“冰墩墩”沿直线运动到对面叶光富的手中。

超实用高考英语复习:填写板块限时模拟训练08 语法填空+应用文写作+读后续写(原卷版,含答题卡)

超实用高考英语复习:填写板块限时模拟训练08 语法填空+应用文写作+读后续写(原卷版,含答题卡)

填写板块限时模拟训练08语法填空+应用文写作+读后续写时间:45分钟满分:55分Ⅰ.语法填空(共10小题,每小题1.5分,满分15分)(2022·河北正定中学)Did you grow up in one culture, your parents came from another, and you are now living in a ___36___ (total) different country? If so, then you are a third-culture kid.The term “third-culture kid” ___37___ (use) in the 1960s for the first time by Dr. Ruth. She first came across this phenomenon while ___38___ (research) North American children living in India. In general, third-culture kids benefit ___39___ their intercultural experience and they often reach excellent academic results.Yet many ___40___ (difficulty) may arise from this phenomenon. Third-culture kids may not be able to adapt ___41___ (they) completely to their new surroundings. Also, they often find it hard ___42___ (develop) new friendship. Additionally, for a third-culture kid, it is often ___43___ (easy) to move to a new country than to return to his homeland. For example, after living in Australia for many years, Louis finally returned to the country ___44___ she was born. She didn’t know anything about current TV shows ____45____ fashion trends. And she didn’t share the same values as other teens of her age.Ⅰ.写作(共两节,满分40分)第一节应用文写作(满分15分)(2022·浙江五校联考)假定你是李华,近日你校举办了以“中国传统文化之美”为主题的首届校园文化节。

牛津译林版英语八年级下册限时提高训练:8BU8 A green world(一)(含答案)

8BU8 限时提高训练一一、单项选择:(本大题共14小题,每小题1分,共14分)1. ---Will you plant trees tomorrow?---______________. We will go if the weather is fine.A. That's trueB. Of courseC. No problemD. It depends2.This kind of sun cream is good_________you to use every day. It can______your face from the sun.A. of, preventB. for, protectC. of, protectD. for, prevent3.She is used to_________on a plane and is not afraid of__________any more.A. work, flyingB. working, flyC. working, flyingD. work, fly4. --- Jim is___________careless boy.--- Yeah. You' re right. He always drops__________“o”when he writes the word“dangerous".A. a, theB. a, anC. the, aD. the, an5.With the development of modern industry, there will be___________living space for wildlife.A. fewer and fewerB. less and lessC. more and moreD. bigger and bigger6.Before you leave the room, make sure you__________the lights and___________the windows.A. turn off, closeB. turn on, closedC. close, closeD. open, open7.With the development of modern industry, there will be_________living space for wild animals.A. fewer and fewerB. less and lessC. more and moreD. bigger and bigger8.As we all know, a person learns many things by making mistakes and____________them.A. correctsB. correctC. to correctD. correcting9. --- May I be allowed to choose a summer course?--- It's up to you. You're_________to make your own decision.A. too oldB. enough oldC. old enoughD. too young10.--- After the sports meeting, there are so many water bottles in the dustbin.--- That's why our club starts a project to collect them so that they will be__________.A. repliedB.returnedC. reducedD. recycled11.Don't be sad about missing the competition. You____________a second chance.A. will giveB. will be givenC. have givenD. were given12. ---Can Mr. King spare some time for the charity show?--- If he___________, he will try his best to make it.A. invitedB. is invitedC. invitesD. will be invited13.It seems that EI Nino__________some disasters in the world in the past few months.A. has causedB. is causingC. will causeD. caused14.--- I promise I will work harder next term, Miss Li.---Well, just as the saying goes,“___________”I do hope that you will act at once.A. It never rains but poursB. Many hands make light workC. Actions speak louder than wordsD.A friend in need is a friend indeed二、词汇:(本大题共10小题,每小题1分,共10分)1. Itis necessary for every one of us to doa lot to protect the____________(环境).2. I neverliked long walks, ____________ (尤其) in winter.3. Mr Han is____________(认真的)about hiswork. He always has__________(严肃的) talks with us.4. It is_________(明智的) to check whether the flight times have changed before you leave forthe airport.5. What action can we take to ____________(减少) air pollution in our daily life?6. Eddie was so busy___________ (dig) boles that he had no time to chat with Hobo.7. Mr. Li was so____________(serious) hurt in an accident that he had to lie in bed for over a month.8.There was much____________in the lake. As a result, many people got ill because of drinking the____________water. (pollute)9. I learnt about an_____________(organize) for__________(recycle)old clothes from the whole country.10. Her parents are___________(pride) that she is doing well at school.三、动词填空:(本大题共8小题,每小题1分,共8分)1. A traffic accident__________(take) place here yesterday evening. Did you see it__________(happen)?2. A big hole must____________(dig) before we plant a tree.3. You can never imagine the great trouble I had___________ (get) her QQ number.4. This baby is often heard___________(cry) t night.5. _________the school sports meeting____________ (hold) next Friday?6. Nothing____________ (offer) to them at first, so they didn't know how to start.7. ---What do you think____________(cause)traffic accidents?---_________ (drive) carelessly.8. He has a lot of work to do. The work___________(not finish) until the class__________(end).9. Their shoes_________(lie) under the bed now. Do you know who they could________(lay)there by?10.We__________(tell) that there will be an important meeting this evening.10.四、完成句子:(本大题共7小题,每小题1分,共7分)1.冬天进行较短时间的淋浴对于干性皮肤的人更好。

初二第二次物理限时训练(含答案)

初二第二次限时训练物理试卷一、选择题(每小题3分,共36分)1.古典名著《三国演义》中,猛将张飞单枪立马在长坂坡当阳桥头,一声大喝,吓退十万曹操大军.这个典故形容张飞声音()A.频率高B.音色差C.音调高D.响度大2.如下图所示,在下面几幅交通标志牌中,属于环境保护的是()A.B.C.D.3.下列关于温度的描述中符合实际的是()A.发高烧时人体温度可达40℃B.冰箱冷冻室的温度为10℃C.饺子煮熟即将出锅时温度为50℃D.加冰的橙汁饮料温度为﹣20℃4.做匀速直线运动的甲、乙两物体,它们的速度之比为2:3,通过的路程之比为3:1,则它们所用的时间之比为()A.1:2 B.2:1 C.9:2 D.2:95.月亮、太阳、点燃的火把、镜子,其中都属于光源的一组是()A.太阳和月亮B.月亮和镜子C.太阳和镜子D.太阳和点燃的火把6.如图所示,一束光斜射到平面镜上,其中反射角是()A.∠1 B.∠2 C.∠3 D.∠47.白天我们能从不同方向看到桌子等物体,这是因为()A.这些物体都是发光的B.眼睛发出的光射到这些物体上C.射到这些物体上的光发生了镜面反射D.射到这些物体上的光发生了漫反射8.使用拉伸了的软塑料尺测物体的长度,测量的结果将()A.比真实值偏大B.比真实值偏小C.不受影响D.和真实值完全一样9.在物理课堂或生活中,我们曾经体验过以下声现象,其中能够说明声音产生的原因是()A.放在密闭玻璃罩里的手机正在响铃,把罩内的空气抽走后,铃声变小B.在一根长钢管的一端敲击一下,从另一端可以听到两次敲击声C.将正在发声的音叉接触平静水面,会在水面上激起水波D.通常我们根据音色辨别不同人说话的声音10.下列关于声现象的说法中,正确的是()A.我们听到的上课铃声是由铃的振动产生的B.登上月球的阿姆斯特朗可与他的同伴进行面对面的直接谈话C.安装在步行街路口的“噪声监测装置”可以防止噪声的产生D.地震专家通过耳朵直接接听地壳运动产生的次声波来预测地震的发生11.电影院的墙壁上都被装成坑坑凹凹的,俗称燕子泥,其目的是()A.减弱回声B.防止声音振坏墙壁C.增大声音的频率D.增强响度12.在下列物态变化的过程中,放出热量的是()A.初春,河面上的冰雪消融成水B.秋天,雨后的早晨出现大雾C.夏天,教室里洒水后空气变得凉爽D.冬天,晾晒的衣服渐渐变干二、填空题(每空1分,共21分)13.(3分)一只2B铅笔的长度约为20 ,一位初二的学生脉搏跳动10次的时间约为0.2 .(填上合适的单位).一张纸的厚度约为70 .14.(2分)小明测量小球的直径,记录的数字分别是:2.41cm、2.43cm、2.40cm、2.42cm,这个球的直径是,他选择的刻度尺的分度值是.15.(2分)一个体温计的示数为38℃,如果没有甩,就用它给一个体温为36.5℃的人测体温,测量结果是,如果给一个体温为39℃的人测体温,测量结果是.16.(1分)2010年3月28日王家岭煤矿发生透水事故,救援工作迅速展开.4月2日下午,事故矿井下发现有生命迹象,原来是被困人员通过敲击钻杆,发出“当当”的求救信号,这是因为传声效果比气体好.17.(2分)如果一物体做匀速直线运动,4s内通过20m的路程,那么它前2s内的速度是m/s,2min后它通过的路程是m.18.(3分)李白诗句“不敢高声语,恐惊天上人”中的“高”是指声音的.女同学说话声音“尖细”,是指女同学声音的高,这是因为女同学说话时声带振动比较的缘故.19.(3分)乘电梯上升的站着的乘客相对地面是,相对电梯厢是.如图在空中加油时,加油机与受油机是相对(“运动”或“静止”).20.(2分)暑假里,天气热极了,小红在家里写作业,汗流不止.抬头看了看挂在墙上的寒暑表,发现示数为32℃.她打开电风扇立刻感到凉快多了,这是因为的缘故.这时她看了看寒暑表,会发现示数(填“升高”、“不变”或“降低”).21.(2分)人工降雨是利用干冰吸热,使云层中水蒸气成小冰晶或液化成小水珠,使云中的小水滴逐渐增大,从而形成降雨(两空选填物态变化的种类).22.(1分)汽车在长100km的公路上行驶,前50km的速度为20m/s,后50km的速度为10m/s,汽车在这100km公路上的平均速度为m/s.三、解答题(共2小题,满分6分)23.在图中根据光路作出平面镜放置的位置(注意标明法线).24.在图中画出反射光线并标出反射角.四、填空题(共3小题,满分16分)25.(5分)如图所示,探究声音的传播实验中(1)在玻璃钟罩内放一个正在发声音乐闹铃,钟罩底部插上玻璃管的软木塞,此时你听到音乐.(填“能”或“不能”)(2)用抽气设备抽钟罩内空气,在抽气的过程中,你听到音乐声将会.(3)如果把钟罩内空气完全抽出我们听到声音.(填“能”或“不能”)但有时还是能听到铃声.请你分析原因可能是:.(4)该实验表明声音不能在中传播.26.(7分)如图所示是探究“平面镜成像的特点”的情景:竖立的薄透明玻璃板下方放一张白纸,再准备A、B两支大小、外形完全一样的蜡烛,然后把点燃的蜡烛A立在玻璃板前,又把蜡烛B放在玻璃板后面,以A蜡烛为成像物体.[来源:学科网ZXXK](1)该实验采用透明薄玻璃板代替日常使用的平面镜的目的是:.(2)该实验选择两个相同的蜡烛A和B,是为了比较像与物的关系.(3)在寻找蜡烛像的位置时,眼睛应该在蜡烛(选填“A”或“B”)侧观察.(4)将蜡烛B在玻璃板后的纸面上来回移动,发现无法让它与蜡烛A的像完全重合(如图甲).你分析出现这种情况的原因可能是.(5)解决以上问题后,蜡烛B与蜡烛A的像能够完全重合,此时若将蜡烛A靠近玻璃板时,则像将(选填“靠近”或“远离”)玻璃板移动,像的大小(选填“变大”、“变小”或“不变”).(6)图乙是某小组的同学经过三次实验,这样做的目的是:.27.(3分)小军同学在4块相同的玻璃板上各滴一滴相同数量的水,进行如图所示的实验探究,得出水蒸发快慢与水的温度、水的表面积和水面上方空气流动快慢有关.(1)通过A、B两图的对比,可以得出水蒸发快慢与有关.(2)通过两图的对比,可以得出水蒸发快慢与水的温度有关.(3)小军同学猜想水蒸发快慢还可能与水的多少有关,于是继续进行了如下探究:在相同环境下的两块相同的玻璃板上分别滴上一滴和两滴水(如图),观察并比较两图中哪块玻璃板上的水先蒸发完.从实验设计环节看,你认为他存在的主要问题是.五.综合应用题(5分)28.一列火车以20m/s的速度在平直的铁轨上匀速行驶,鸣笛后2s内收到前方障碍物反射回来的声音,此时司机立即刹车.问刹车处司机距障碍物多远?初二第二次限时训练物理试卷一、选择题1~5 D C A C D 6~10 B D B C A 11~!2 A B二、填空题13.cm;min;μm.14.2.42cm、1毫米.15.38℃,39℃.16.固体.17.5;600.18.响度,音调,快.19.运动;静止;静止.20.蒸发吸热;不变.21.升华;凝华.22.13.3.三、解答题23.24.四、填空题25.(1)能;(2)减小;(3)不能;A.空气没有被全抽出.B.底座的固体传声.(4)真空.26.(1)确定A蜡烛像的位置;(2)大小;(3)A;(4)玻璃板没有竖直放置;(5)靠近;不变;(6)防止实验的偶然性,使实验结论具有普遍性.点评:理解实验中选择两个相同的蜡烛、刻度尺、透明玻璃板的原因,把透明玻璃板竖直放在水平桌面的原因等.27.(1)液体的表面积;(2)A、C;(3)没有控制液体的质量相同.五.综合应用题(4分)28.解答:解:在t=2s的时间内,汽车行驶的距离:s1=v1t=20m/s×2s=40m,声音传播的距离:s2=v2t=340m/s×2s=680m,设司机鸣笛时汽车到山崖的距离为s,则:2s=s1+s2,∴s===360m,刹车处司机距障碍物的距离:s3=s﹣s1=360m﹣40m=320m.答:刹车处司机距障碍物的距离为320m.。

华师版八年级数学下册限时训练:17.1.1.练习

17.1变量与函数 (一)限时训练:1.下列关于变量 x 、y 的关系:①3x-2y=5;②y=|x|;③2x-2y =10.其中表示 y 是 x 的函数关 系的是( )A.①②③B.①②C.①③D.②③2. 在 ABC ∆中,它的底边长是 a ,底边上的高是 h ,则三角形面积12S ah = ,当 a 为定长时,在此式子中( )A .S 、h 是变量,12、a 是常量B .S 、h 、a 是变量,12 是常量C .a 、h 是变量,12 、S 是常量D .S 是变量, 12、a 、h 是常量 3.如果每盒圆珠笔有 12 支,售价 18 元,那么圆珠笔的售价 y (元)与圆珠笔的支数 x 之间的函数关系式是( )A .32y x =B .23y x =C . 12y x =D . 18y x =4、在圆的周长和半径之间的关系式C=2π r 中,其中, __是常量,_ _ 是变量.5、有一棵树苗,刚栽下去时树高1.2 米,以后每年长高0.2 米,设x 年后树高为y 米,那么y 与x 之间的函数解析式为_ 。

6、某弹簧的自然长度为3cm,在弹性限度内,所挂物体的质量x 每增加某1 千克,弹簧长度y 增加0.5 厘米。

则y=_ __,其中的变量_ ,常量。

7.按要求写出函数关系式,并指出其中的常量和变量:(1)正方形的面积S 与边长x 的函数关系;(2)面积为a 的长方形的长y 与宽x 之间的函数关系;(3)一本500 页的书,每天看15 页,x 天后尚未看的页数y 与天数之间的函数关系;(4)一年期的存款利率为a,到期后的本息和y 与存入的金额x 之间的函数关系.8.下面变量之间的关系是不是函数关系?(1)长方形的宽一定时,其长与面积;(2)等腰三角形的底边长与面积;(3)某人的年龄与身高;(4)关系式| y |= x 中的y 与x .9.每个同学购买一支钢笔,每支笔5 元,求总金额y(元)与学生数n(个)的函数关系并指出式中的函数与自变量,写出自变量的取值范围。

江苏省无锡市江阴市青阳中学2024-2025学年八年级上学期12月限时训练历史试题(无答案)

2024年秋学期初二历史十二月份限时训练一、单项选择题:(本大题共25小题,每小题1分,共25分)1.某历史兴趣小组准备对一个历史课题进行研究,他们搜集了以下一些历史资料①林则徐生平史迹②英国军队侵华暴行③割让香港岛示意图。

根据这些历史资料判断,他们研究的课题应该是关于 A.虎门销烟 B.鸦片战争 C.第二次鸦片战争 D.甲午中日战争2.右图是近代某次侵华战争示意图。

在此期间侵略军的暴行是A.逼迫清政府开放上海口岸B.迫使中国鸦片贸易合法化C.洗劫后放火焚烧了圆明园D.占领旅顺后进行了大屠杀3.《马关条约》中最能体现帝国主义时代经济侵略的特点的是A.赔款白银二亿两B.增开四个通商口岸C.开辟内河航线D.允许日本在通商口岸开设工厂4.《辛丑条约》签订时,慈禧太后曾说:“……量中华之物力,结与国之欢心。

”对这句话理解准确的是A.符合当时国际外交形势B.说明中国综合国力、物力强大C.中国必须与世界各国友好交往D.清政府完全成为了“洋人的朝廷”5.它坚持斗争14年,转战大半个中国,沉重打击了清朝的统治和外国侵略势力,是中国历史上规模最宏大的农民战争。

“它”指的是A.陈胜吴广起义 B.李自成起义 C.太平天国运动 D.义和团运动6.近代中国的一些有识之士受第二次鸦片战争中圆明园被焚的极大刺激和震撼,感到学习西方先进军事技术势在必行,终于启动了一场持续了30多年的“自强运动”。

这场运动是A.洋务运动B.戊戌变法C.辛亥革命D.新文化运动7.在1895年到1898年间,康有为多次上书光绪帝。

这一时期康有为上书的主题应是A.严厉禁烟,抵御外侮B.维新变法、救亡图存C.师夷长技、自强求富D.驱除鞑虏、恢复中华8.蔡元培为“他”所写挽联:“是中国自由神,三民五权,推翻历史数千年专制之局;愿吾侪后死者,齐心协力,完成先生一二件未竟之功。

”他是A.秋瑾 B.章炳麟 C.陈天华 D.孙中山9.民国元年,为紧跟时势,商务印书馆编纂了《共和国教科书》,推崇爱国、平等、自由、权利、义务等理念。

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第 1 页 共 2 页 2016届高三英语限时训练(六) 第二节 (共5小题,每小题2分,满分10分) 根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 How to Study Better If you want to study better, you should pay attention to study ways, study skills and study habits. Developing them can help you learn better. Keep your study area tidy and organized. Papers, books, magazines, or pictures all over your work area may distract (使分心) you from the work you have to do. 16 If there are too many icons on your desktop, it is difficult for you to find what you need immediately. Maintain a quiet work area for yourself. Make sure your work area is free of distractions. There are too many distractions at home, such as a phone, music, TV, friends, or family members. Proper study space can usually be found in the public library, school library, or your bedroom. 17 18 While learning, you need write, calculate and look up something. So it is very important and necessary to have all the necessary materials and tools that you need with you. In this way, you needn’t be busy borrowing them. 19 In addition to reading your textbook, it is helpful to read or view materials from other sources, such as newspapers, magazines, the Internet, and television programs. You can understand what you will learn in class better. Never forget to take notes carefully in class. Taking notes carefully can help to grasp the key parts. 20 We can say that it is really a successful way to study. A. A quiet place can help to improve study efficiency. B. You should know how to schedule your study time. C. The same is your computer desktop. D. Try hard to learn knowledge as much as possible. E. It is convenient to review them later. F. Having necessary materials is very beneficial to study. G. Get ready for class by reading extra materials ahead of time. CAFGE 第二部分 英语知识运用(共两节, 满分45分) 第一节 完形填空(共20 小题;每小题1.5分,满分30分) 阅读下面短文,从短文后各题所给的四个选项(A, B, C, D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。 This is a story about a learning experience that had a big effect on the way I live my life. The 41 in the story did not give me tests on my work. I was taught by one of the most effective 42 of teaching. These words ── Where is my wallet? appeared in my 43 at once when I found my wallet was missing. I 44 my memory fast, then realized that I had left my wallet in the library’s public 45 ! Because the library was now 46 , I had to wait until the next morning. When I got there the next day, all I found was a clean restroom. This was the first time I could remember ever 47 to see a clean restroom. As I walked out, I looked at myself in the 48 and shook my head without saying. I politely 49 the librarian and asked her if a wallet had been found in the restroom. “ No.” That was that. I walked off with a sense of 50 . I wondered how happy I would be if I had 51 my wallet with sixty dollars and other 52 things. Finally, it was 53 that I accepted the fact that my wallet was gone. A week later, I received a 54 in the mail. It was my wallet! It was the most 55 that nothing was missing! But there was a letter folded up in one of the wallet pocket, I slowly unfolded the letter, which read something like this: When we continue to help people 56 , we will live in a larger and more rewarding world. This person regarded as my teacher didn’t even leave a return 57 . So I couldn’t thank him. But from that day on, I 58 myself that l will follow this 59 , help others and make them as 60 as I was when I was helped!

41. A. 1eader B. writer C. scholar D. teacher 42. A. aids B. methods C. materials D. systems 43. A. mind B. hand C. pocket D. letter 44. A. developed B. improved C. searched D. recorded 45. A. office B. restroom C. reading-room D. showroom 46. A. crowded B. open C. closed D. occupied 47. A. hating B. hoping C. refusing D. preferring 48. A. street B. restroom C. corner D. mirror 49. A. interviewed B. approached C. managed D. eased 50. A. satisfaction B. forgiveness C. disappointment D. safety 51. A. found B. bought C. lost D. borrowed 52. A. reasonable B. strange C. surprising D. personal 53. A. gladly B. painfully C. willingly D. naturally 54. A. 1etter B. note C. package D. book 55. A. sincerely B. amazingly C. honestly D. obviously 56. A. up B. down C. over D. around 57. A. ticket B. command C. address D. time 58. A. supported B. suggested C. improved D. promised 59. A. example B. course C. regulation D. plan 60. A. shocked B. delighted C. careful D. optimistic

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