中考真题20:2017年扬州市初中毕业考试试题(附答案)
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2017年江苏省扬州市中考语文试卷一、积累运用1.下列加点字注音,全部正确的是()A.安恬.(tián)绚.丽(xùn)荟萃.(cuì)闲情逸.致(yè)B.参.天(cēn)镶嵌.(qiàn)静谧.(bì)栩.栩如生(xǔ)C.磅礴.(bó)眷.恋(juàn)温馨.(xīn)争妍.斗艳(yán)D.邂.逅(xiè)惬.意(xiá)娴.熟(xián)玲珑剔.透(tì)2.下列各句中,加点成语使用正确的是()A.做任何事情都要按一定的步骤循序渐进....,否则会让自己陷入效率低下的忙碌中B.毕业晚会即将举行,一向热衷集体活动的明明同学上蹿下跳....,做着各种准备工作.C.在青山绿水间浮光掠影....,在名篇佳作中流连忘返,都能让我们领悟美的真谛D.如果不想迷失在纷繁复杂的世界里,我们就必须择善而从....,在真理的引领下前行3.下列几句中,没有语病的一项是()A.据调查,我国超80%左右的成年人全谷物摄入不足,导致维生素b、膳食纤维等的缺失B.这三年多来,一带一路建设从无到有、由点及面,进度和成果都超出了预期C.通过在扬州钟书阁举办的《人间送小温》首发式,使更多年轻读者深入了解汪曾祺D.我们不仅要学习巴西人“用脑踢球”的理念,但也要大力发展我国青少年的足球事业4.下列说法正确的一项是()A.欣赏着瘦西湖的红桃绿柳,他由衷赞叹:“万紫千红总是春啊”!解说:这句话末尾的标点使用正确B.木本采沐解说:这四个字的造字法相同C.繁花嫩叶流水潺潺爱好文学赞叹不已解说:这四个短语的结构类型相同D.紫色的瀑布遮住了粗壮的韩盘虬卧龙般的枝干解说:这句话的主干是“瀑布遮住枝干”5.下列关于文学作品常识及内容的表述,不完全正确的一项是()A.文学作品中常有使人眼前一亮的“孩子”形象,如《皇帝的新装中》说真话的孩子,《社戏》中那一群活泼淳朴的少年儿童,他们身上,往往闪着人性美好纯真的光彩B.想象能给我们带来更多的审美愉悦,在老舍笔下,夕阳返照,山坡上的薄雪羞红了脸.在郭沫若眼中,流星划过,是牛郎织女提着灯在天街闲游C.作者的经历往往会在作品中留下印记,《小石潭记》中潭水映照出柳宗元被贬永州后内心的凄凉.《醉翁亭记》中琅琊山悦耳的鸟鸣反正出欧阳修被贬后消极循世的思想D.曲折的情节,有助于丰富人物的形象.强化作品主题,《汤姆索亚历险记》中,神秘的探险凸显了主人公的勇敢正直,《格列佛游记》以主人公航海的奇遇.折射出作者生活时代英国的社会现实6.根据拼音写汉字走进江淮生态大走廊,便能感受到扬州生态文明,触摸到城市文化记忆:在万福大桥上远(tiào),树影婆娑,花团锦(cù),看不够“七河八岛”那滴翠的绿和浓(yù)的红。
扬州市2017年初中毕业、升学统一考试物理试题说明:1.本试卷共6页,包含选择题(第1题~第12题,共12题)、非选择题(第13题~第30题,共18题)两部分。
本卷满分100分,考试时间为100分钟。
考试结束后,请将本试卷和答题卡一并交回。
2.答题前,考生务必将自己的姓名、准考证号填写在答题卡相应的位置上,同时务必在试卷的装订线内将本人的姓名、准考证号、毕业学校填写好,在试卷第一面的右下角写好座位号。
3.所有的试题都必须在专用的“答题卡”上作答,选择题用2B铅笔作答、非选择题在指定位置用0.5毫米的黑色墨水签字笔作答。
在试卷或草稿纸上答题无效。
4.如有作图需要,请用2B铅笔作答,并请加黑加粗,描写清楚。
一、选择题(本题共12小题,每小题2分,共24分。
每小题给出的四个选项中只有一个....选项正确)1.下列属于电学单位的是A.牛顿B.帕斯卡C.安培D.千克2.测量是物理实验的基本技能,下列测量工具的使用,方法正确的是3.如图,盲人过街提示器(即盲人砖)提示盲人的途径可能是A.可见光B.红外线C.紫外线D.声音4.天气炎热,小明在吃冷饮时观察到一些现象,下列分析正确的是A.将冷饮从冰箱里拿出时.感觉到“粘”手是凝固造成的B.包装盒外面的霜,是液化造成的C.打开冷饮包装纸,看到有“白气”生成是升华造成的D.吃冷饮时感到凉爽,主要是凝华造成的5.如图所示的现象中,由于光的折射形成的是A.树荫下的光斑B.手影C.月亮的“倒影” D.笔“折断”了6.下列用电器工作时,将电能全部转化为内能的是A.电风扇B.电水壶C.电视机D.微波炉7.扬州城区的高层建筑越来越多,但高空抛物却存在巨大的安全隐患,因为高处的物体具有较大的A.弹性势能B.重力势能C.体积D.阻力8.如图所示,菲菲和翔翔坐在车厢内,观察判断火车的运动情况。
菲菲:以窗外的动车为参照物,火车的位置变化了,因此火车是运动的。
翔翔:以窗外的站台为参照物,火车的位置没有变化,因此火车是静止的。
2017年江苏省扬州市中考语文试卷一、积累运用.下列加点字注音,全部正确的是()✌.安恬.(♦♓↑⏹)绚.丽(⌧▫⏹)荟萃.(♍◆↗)闲情逸.致(⍓→).参.天(♍←⏹) 镶嵌.(❑♓→⏹)静谧.(♌↗)栩.栩如生(⌧).磅礴.(♌▫)眷.恋( ◆→⏹)温馨.(⌧↘⏹)争妍.斗艳(⍓↑⏹).邂.逅(⌧♓→)惬.意(⌧♓↑)娴.熟(⌧♓↑⏹)玲珑剔.透(♦↗) .下列各句中,加点成语使用正确的是()✌.做任何事情都要按一定的步骤循序渐进....,否则会让自己陷入效率低下的忙碌中.毕业晚会即将举行,一向热衷集体活动的明明同学上蹿下跳....,做着各种准备工作..在青山绿水间浮光掠影....,在名篇佳作中流连忘返,都能让我们领悟美的真谛.如果不想迷失在纷繁复杂的世界里,我们就必须择善而从....,在真理的引领下前行.下列几句中,没有语病的一项是()✌.据调查,我国超 左右的成年人全谷物摄入不足,导致维生素♌、膳食纤维等的缺失.这三年多来,一带一路建设从无到有、由点及面,进度和成果都超出了预期.通过在扬州钟书阁举办的《人间送小温》首发式,使更多年轻读者深入了解汪曾祺.我们不仅要学习巴西人❽用脑踢球❾的理念,但也要大力发展我国青少年的足球事业.下列说法正确的一项是()✌.欣赏着瘦西湖的红桃绿柳,他由衷赞叹:❽万紫千红总是春啊❾✐解说:这句话末尾的标点使用正确.木 本 采 沐解说:这四个字的造字法相同.繁花嫩叶 流水潺潺 爱好文学 赞叹不已解说: 这四个短语的结构类型相同.紫色的瀑布遮住了粗壮的韩盘虬卧龙般的枝干解说:这句话的主干是❽瀑布遮住枝干❾.下列关于文学作品常识及内容的表述,不完全正确的一项是()✌.文学作品中常有使人眼前一亮的❽孩子❾形象,如《皇帝的新装中》说真话的孩子,《社戏》中那一群活泼淳朴的少年儿童,他们身上,往往闪着人性美好纯真的光彩.想象能给我们带来更多的审美愉悦,在老舍笔下,夕阳返照,山坡上的薄雪羞红了脸.在郭沫若眼中,流星划过,是牛郎织女提着灯在天街闲游 .作者的经历往往会在作品中留下印记,《小石潭记》中潭水映照出柳宗元被贬永州后内心的凄凉.《醉翁亭记》中琅琊山悦耳的鸟鸣反正出欧阳修被贬后消极循世的思想.曲折的情节,有助于丰富人物的形象.强化作品主题,《汤姆索亚历险记》中,神秘的探险凸显了主人公的勇敢正直,《格列佛游记》以主人公航海的奇遇.折射出作者生活时代英国的社会现实.根据拼音写汉字走进江淮生态大走廊,便能感受到扬州生态文明,触摸到城市文化记忆:在万福大桥上远(♦♓→☐) ,树影婆娑,花团锦(♍▫) ,看不够❽七河八岛❾那滴翠的绿和浓(⍓▫) 的红。
扬州市2017年初中毕业、升学统一考试数学试题第Ⅰ卷(共24分)一、选择题:(本大题共8个小题,每小题3分,共24分.)1.若数轴上表示1−和3的两点分别是点A 和点B ,则点A 和点B 之间的距离是( )A .4−B .2−C .2D .42.下列算式的运算结果为4a 的是( )A .4a a ⋅B .()22aC .33a a +D .4a a ÷3.一元二次方程2720x x −−=的实数根的情况是( )A .有两个不相等的实数根B .有两个相等的实数根C .没有实数根D .不能确定4.下列统计量中,反映一组数据波动情况的是( )A .平均数B .众数 C.频率 D .方差5.经过圆锥顶点的截面的形状可能是( )A .B . C. D .6.若一个三角形的两边长分别为2和4,则该三角形的周长可能是( )A .6B .7 C. 11 D .127.在一列数:1a ,2a ,3a ,⋅⋅⋅,n a 中,13a =,27a =,从第三个数开始,每一个数都等于它前两个数之积的个位数字,则这一列数中的第2017个数是( )A .1B .3 C.7 D .98.如图,已知C ∆AB 的顶点坐标分别为()0,2A 、()1,0B 、()C 2,1,若二次函数21y x bx =++的图象与阴影部分(含边界)一定有公共点,则实数b 的取值范围是( )A .2b ≤−B .2b <− C. 2b ≥− D .2b >−第Ⅱ卷(共126分)二、填空题(每题3分,满分30分,将答案填在答题纸上)9.2017年5月18日,我国在南海北部神弧海域进行的可燃冰试开采成功,标志着我国成为全球第一个在海域可燃冰开采中获得连续稳定的国家.目前每日的天然气试开采量约为16000立方米,把16000立方米用科学记数法表示为 立方米. 10.若2a b =,6b c =,则a c = .11.因式分解:2327x −= . 12.在ABCD 中,若D 200∠B +∠=,则∠A = .13.为了了解某班数学成绩情况,抽样调查了13份试卷成绩,结果如下:3个140分,4个135分,2个130分,2个120分,个100分,个80分.则这组数据的中位数为 分.14.同一温度的华氏度数y (F )与摄氏度数x (C )之间的函数表达式是9325y x =+.若某一温度的摄氏度数值与华氏度数值恰好相等,则此温度的摄氏度数为 C .15.如图,已知⊙O 是C ∆AB 的外接圆,连接AO ,若40∠B =,则C ∠OA = .16.如图,把等边C ∆AB 沿着D E折叠,使点A 恰好落在C B 边上的点P 处,且D C P ⊥B ,若4BP =cm ,则C E =cm .17.如图,已知点A 是反比例函数2y x=−的图像上的一个动点,连接OA ,若将线段OA 绕点O 顺时针旋转90得到线段OB ,则点B 所在图像的函数表达式为 .18.若关于x 的方程2201740200x m x −+−+=存在整数解,则正整数m 的所有取值的和为 .三、解答题 (本大题共10小题,共96分.)19. (本题满分8分)计算或化简:(1)()02220172sin 6013π−+−−+−; (2)()()()32211a a a a −++−.20. (本题满分8分)解不等式组2305503x x +≥⎧⎪⎨−>⎪⎩,并求出它的所有整数解.21. (本题满分8分)“富春包子”是扬州特色早点,富春茶社为了了解顾客对各种早点的喜爱情况,设计了如右图的调查问卷,对顾客进行了抽样调查.根据统计数据绘制了如下尚不完整的统计图.根据以上信息,解决下列问题:(1)条形统计图中“汤包”的人数是 ,扇形统计图中“蟹黄包”部分的圆心角为 ;(2)根据抽样调查结果,请你估计富春茶社1000名顾客中喜欢“汤包”的有多少人?22. (本题满分8分)车辆经过润扬大桥收费站时,4个收费通道A 、B 、C 、D 中,可随机选择其中的一个通过.(1)一辆车经过此收费站时,选择A 通道通过的概率是 ;(2)求两辆车经过此收费站时,选择不同通道通过的概率.23. (本题满分10分)星期天,小明和小芳从同一小区门口同时出发,沿同一路线去离该小区1800米的少年宫参加活动,为响应“节能环保,绿色出行”的号召,两人都步行,已知小明的速度是小芳的速度的1.2倍,结果小明比小芳早6分钟到达,求小芳的速度.24. (本题满分10分)如图,将C ∆AB 沿着射线C B 方向平移至C '''∆A B ,使点'A 落在C ∠A B 的外角平分线CD 上,连结'AA .(1)判断四边形CC ''A A 的形状,并说明理由;(2)在C ∆AB 中,90∠B =,24AB =,12cos C 13∠BA =,求C 'B 的长.25. (本题满分10分)如图,已知OABC 的三个顶点A 、B 、C 在以O 为圆心的半圆上,过点C 作CD ⊥AB ,分别交AB 、AO 的延长线于点D 、E ,AE 交半圆O 于点F ,连接CF .(1)判断直线D E 与半圆O 的位置关系,并说明理由;(2)①求证:CF C =O ;②若半圆O 的半径为12,求阴影部分的周长.26. (本题满分10分)我们规定:三角形任意两边的“极化值”等于第三边上的中线和这边一半的平方差.如图1,在C ∆AB 中,AO是C B 边上的中线,AB 与C A 的“极化值”就等于22AO −BO 的值,可记为22C AB∆A =AO −BO .(1)在图1中,若C 90∠BA =,8AB =,C 6A =,AO 是C B 边上的中线,则C AB∆A = ,C O ∆OA = ;(2)如图2,在C ∆AB 中,C 4AB =A =,∠BAC =120°,求C AB∆A 、C BA∆B 的值;(3)如图3,在C ∆AB 中,C AB =A ,AO 是C B 边上的中线,点N 在AO 上,且13ON =AO ,已知C 14AB∆A =,10BN∆BA =,求C ∆AB 的面积.27. (本题满分12分)农经公司以30元/千克的价格收购一批农产品进行销售,为了得到日销售量p (千克)与销售价格x (元/千克)之间的关系,经过市场调查获得部分数据如下表:(1)请你根据表中的数据,用所学过的一次函数、二次函数、反比例函数的知识确定p 与x 之间的函数表达式;(2)农经公司应该如何确定这批农产品的销售价格,才能使日销售利润最大?(3)若农经公司每销售千克这种农产品需支出a 元(0a >)的相关费用,当4045x ≤≤时,农经销售价格x (元/千克) 30 35 40 45 50 日销售量p (千克) 600 450 300 150公司的日获利的最大值为2430元,求a 的值.(日获利=日销售利润-日支出费用)28. (本题满分12分)如图,已知正方形CD AB 的边长为4,点P 是AB 边上的一个动点,连接C P ,过点P 作C P 的垂线交D A 于点E ,以PE 为边作正方形FG PE ,顶点G 在线段C P 上,对角线G E 、F P 相交于点O .(1)若1AP =,则AE = ; (2)①求证:点O 一定在∆APE 的外接圆上;②当点P 从点A 运动到点B 时,点O 也随之运动,求点O 经过的路径长;(3)在点P 从点A 到点B 的运动过程中,∆APE 的外接圆的圆心也随之运动,求该圆心到AB 边的距离的最大值.2017年扬州中考数学参考答案:一、1、D ;2、B ;3、A ;4、D ;5、B ;6、C ;7、B ;8、C ;二、9、4106.1⨯;10、12;11、)3)(3(3−+x x ;12、80°;13、135;14、-40;15、50°;16、23+2;17、xy 2−=;18、15; 第18题详解:因为2201740200x m x −+−+=,若x =2017,则m 无解,当x ≠2017时,x x m −−=2017)2010(2,令t =x −2017, m=tt )7(2−,0<t ≤7且为整数,将t=1,2,3,4,5,6,7代入,当t =1时,m =12;当t =4时,m =3;所以12+3=15.三、19、(1)原式=-4;(2)原式=23−a .20、解不等式组得-23≤x <3,又因为x 取整数,所以x =-1,0,1,2. 21、(1)48,72°;(2)300.22、(1)41;(2)树状图或列表略,43. 23、设小芳的速度为6m/min.根据题意得:62.118001800+=x x ,x=50,经检验x=50是原方程的解,答略.24、(1)略;(2)易求AC =26,BC =10,C 'B =16.25、(1)略;(2)阴影部分的周长为(4π+12+123);26、(1)0, 7;(2)AB △AC =-8, BA △BC =24;(3)设ON =x ,OB =OC =y ,那么 OB =2x ,OA =3x ,⎪⎩⎪⎨⎧=−+=−10)2(14)3(22222x y x y x ,解得:⎩⎨⎧==22y x ,⎩⎨⎧−=−=22y x (负值舍去),所以BC =4,OA =32,所以△ABC 的面积为62.27、(1)p =-30x +1500;(2)设利润为w 元,那么3000)40(30)10(2+−−=−=x x p w ,当x=40时,最大利润w 为3000元;(3)a=2。
扬州市2017年初中英语中考试卷及答案A. everythingB. somethi ngC.anythingD. nothing4.——All done! Let’s swim, Martine!——Swimming! I just _______get used to it in winter.A. can’t B.shouldn’t C. mustn’t D. needn’t 5.___________ she couldn’t see his face, she could tell by his voice that he was young.A. UnlessB.IfC.Becau seD. Though6. ——What are you reading?— A book about a baseball player. This guy was well __________for hi s devotion to charity work.A. enjoyedB. resp ectedC. behaved D.expected7.——__________bad news! We didn’t win the 15th Sudirman Cup. ——It’s a pity.A. WhatB.What aC. HowD. How a8. Mrs. White is ________enough to spend her spare time on our maths problems.A. confidentB. curi ousC. wiseD. generous9.——I went from a school desk to a ship in my teens. ——_____________days would you be at sea? Homesick?A. How longB. Howmany C. How mu ch D. How soon10. My grandpa knows the history and medical _______ of many plants.A. wealthB. p riceC.val ueD.cost 11.——You have a nice car. —Thank you. I __________ it for less than one month.A. boughtB.have boughtC. hadD. have had12. Mom does all the housework so that Sarah can take the time ______ _ her words on paper. A. putB. puttingC. to putD. puts13.——What do you think of the sofa?——Not bad, but it may _________ t oo much space of our living room.A. take up B . put up C . open up D. make up14.——Excuse me, could you tell me __ _________? ——Well, there’s one on your left.A. when the bank opensB. where the bank isC. how far is the bankD. h ow can I get to the bank15.——Only those who have a lot in c ommon can get along well. ——_____________. Opposites sometimes attract.A. I hope soB.I think soC. I don’t careD. I don’t think so二、完形填空(共15小题;每小题1分,计15分)阅读下列短文,从文后各题所给的四个选项中选出一个最佳答案。
2017年扬州市初中毕业升学考试物理试题卷一、选择题(本题共12小题,每小题2分,共24分,每小题给出的四个选项中只有一个....选项正确)1。
下列属于电学单位的是()A. 牛顿 B。
帕斯卡 C。
安培 D. 千克2。
测量是物理实验的基本技能,下列测量工具的使用,方法正确的是( )第3题图3. 如图,盲人过街提示器(即盲人砖)提示盲人的途径可能是()A. 可见光 B。
红外线 C. 紫外线 D。
声音4. 天气炎热,小明在吃冷饮时观察到一些现象,下列分析正确的是()A。
将冷饮从冰箱里拿出时,感觉到“粘”手是凝固造成的B. 包装盒外面的霜,是液化造成的C。
打开冷饮包装纸,看到有“白气"生成是升华造成的D。
吃冷饮时感到凉爽,主要是凝华造成的5。
如图所示的现象中,由于光的折射形成的是()6. 下列用电器工作时,将电能全部转化为内能的是()7。
扬州城区的高层建筑越来越多,但高空抛物却存在巨大的安全隐患,因为高处的物体具有较大的()A。
弹性势能 B。
重力势能 C. 体积 D。
阻力8。
如图所示,菲菲和翔翔坐在车厢内,观察判断火车的运动情况,菲菲:以窗外的动车为参照物,火车的位置变化了,第8题图因此火车是运动的.翔翔:以窗外的站台为参照物,火车的位置没有变化,因此火车是静止的,以上判断()A. 菲菲正确B。
翔翔正确C. 两人都正确D. 两人都不正确9。
将一本物理书从地面捡起放到课桌上,所做的功大约是()A. 0。
2 JB. 2 JC. 20 J D。
200 J10。
如图,是手摇式手电筒,只要转动手电筒的摇柄,灯泡就能发光.下列实验能揭示手电筒工作原理的是()第11题图11。
如图,电源电压恒定不变,闭合开关,电压表的示数为U;将另一电阻R接入ab间,再闭合开关,电压表示数变为0。
4 U,则接入R后()A。
R和R0两端电压之比为2∶3B。
通过R0的电流变小C。
R0两端的电压变小D. R0消耗的功率减小错误!12. 某同学从滑梯上匀速下滑,滑梯对该同学作用力F的方向是()第12题图二、填空题(本大题共10小题,每空1分,共28分)13。
2017年初中毕业升学考试(江苏扬州卷)英语试题一、单选题1. (2017·江苏扬州· 1)They stopped in ________ beautiful place for camping,near ________ farmhouse of the Smiths.A a;aB the;aC a;theD the;the2. We all like watching the TV program Readers Saturday evening.A inB onC atD for3. (2017·江苏扬州· 3)Bryan will not want to have ________ to do with horses in the future.A everythingB somethingC anythingD nothing4. ——All done! Let’s swim, Mar tine!——Swimming! I just _______get used to it in winter.A can’tB shouldn’tC mustn’tD needn’t5. ___________ she couldn’t see his face, she could tell by his voice that he was young.A UnlessB IfC BecauseD Though6. — What are you reading?— A book about a baseball player. This guy was well __________for his devotion to charity work.A enjoyedB respectedC behavedD expected7. (2017江苏扬州)——__________bad news! We didn’t wi n the 15tℎ Sudirman Cup. ——It’s a pity.A WhatB What aC HowD How a8. Mrs. White is ________enough to spend her spare time on our maths problems.A confidentB curiousC wiseD generous9. —— I went from a school desk to a ship in my teens.—— _____________days would you be at sea? Homesick?A How longB How manyC How muchD How soon10. My grandpa knows the history and medical of many plants.A wealthB priceC valueD cost11. (2017江苏扬州)—— You have a nice car.—— Thank you. I __________ it for less than one month.A boughtB have boughtC hadD have had12. Mom does all the housework so that Sarah can take the time her words on paper.A putB puttingC to putD puts13. (2017江苏扬州)— What do you think of the sofa?— Not bad, but it may _______ too much space of our living room.A take upB put upC open upD make up14. —— Excuse me, could you tell me ___________?——Well, there’s one on your left.A when the bank opensB where the bank isC how far is the bankD how can I get to the bank15. (2017·江苏扬州· 15)—Only those who have a lot in common can get along well.—________. Opposites sometimes attract.A I hope soB I think soC I don't careD I don't think so二、完型填空16. When Charles Lee handed me the small red notebook in 1974, he changed my life. “While travelling, you should keep notes on the things you see and do. ____ , you will forget them some day,” he explained. I was staying in his house when travelling in England.I took his_______.I wrote in the notebook every day during the homestay and back to university. I recorded weekend trips, my professors and ideas about my life and future.When I wrote, I wondered about my _____and purpose. Who would read this? Was I recording events and ideas just as a reminder to memory, or was there some larger purpose for this______exercise?I got a big picture for the task. I was recording events, thoughts, words that were______to my life. I ____ a future me sitting down to read the pages. I wondered what it would feel like to read those words later.I filled the notebook Charles gave me. I bought a new one and ____ it. Then another and another.Recently, I decided to look through my notebooks in the past 42 years. Charles hadbeen______. I remembered the big ____ , the central happenings, but on each page were details I had ____ .I hadn’t written every day, but I always picked up the______ when it felt important. I often wrote in them at school ____ my students were writing. I wanted to pass on the _____ Charles had given me. These writings formed a continuous ____ between my past, present, and future through events in my life.It took several long evenings to read through my notebooks. As I read, I suddenly realized they are a gift to the ___ me-----I am now the person I was writing to throughout those years. (1)A SoB InsteadC MoreoverD Otherwise(2)A donationB rewardC adviceD promise(3)A listenersB readersC studentsD professors(4)A dailyB weeklyC monthlyD yearly(5)A commonB importantC practicalD similar(6)A imaginedB rememberedC enjoyedD expected(7)A wroteB filledC gatheredD increased(8)A patientB seriousC rightD wrong(9)A mistakesB problemsC accidentsD events(10)A forgottenB avoidedC keptD improved(11)A drawingB travellingC readingD writing(12)A whenB untilC beforeD after(13)A notebookB houseC lessonD effort(14)A productionB connectionC instructionD situation(15)A lateB pastC presentD future三、阅读单选17. The 9/11 Memorial & Museum honors the 2, 983 victims in the terrorist attackson September 11, 2001and February 26, 1993.The 9/11 Memorial is also a place to honor those who risked their lives to save others.The 9/11 Museum is well﹣known for preserving the history ofthe events of September(1)They are located at the World Trade Center.We strongly recommend the use of public transport there.There are eight undergrounds to get you there.Memorial Hours of OperationOpen daily 7:30 a.m.﹣9:00 p.m.Museum Hours of OperationSunday﹣Thursday,9:00 a.m.﹣8:00 p.m./Last entry at 6:00 p.m.Friday and Saturday,importance of the World Trade Center.You can buy the Memorial tour ticket separately.The price is 15per person.*Join a guide on a Museum tour,examining authentic artifacts (真品) to understand what happened on 9/11,and the history and rebuilding of the World Trade Center.The price is $20per person but you need to get the Museum admission (入场券) first.For a full list of options,visit________.31.According to the passage,which of the following sentences is TRUE?________A The 9/11 Memorial only honors the victims.B You can enter the Museum at 6:30 p.C You are advised to take underground there.D Join a Memorial tour to understand what happened on 9.(2)32.If Mr.Black (60 years old) and his grandson John (7 years old) want to join the Museum tour,they need to pay________ for the tickets.A 39 B. C 69 D.(3)The passage probably comes from________.A a film magazine .B a history textbook.C a government report .D a travelling guide.18.Still in shock! I moved around the house purposelessly trying to decide what to put into the suitcases(行李箱). Earlier that evening, I'd received a call telling me that my brotherwas killed in a car crash. "Come as soon as you can." cried my mother.I wanted to hurry to her at once. But my husband, Larry, and I were packing to move from New York to Seattle. Our house was in total mess. Supper dishes sat on the kitchen table. Toys lay everywhere. I purposelessly picked things up and put them down. Mother's crying went through my head again and again.Larry called some friends to tell them what had happened to me. Someone said to me: "If there's anything I can do, let me know." But I didn't know what to ask for.Suddenly, the doorbell rang. It was Emerson. He and his wife Donna lived in the block nearby. "I've come to clean your shoes," he said.I asked him to repeat."Donna had to stay with the baby," he said, "but we want to help you. I remember when my father died, it took me hours to clean our shoes for the funeral(葬礼). Give me all your shoes." I gathered all our dirty shoes to the kitchen. Emerson got to work right away. Watching him devoting himself to one task helped me pull my own thoughts into order. I told myself to wash clothes first. Then, Larry and I bathed the children and put them to bed. One job after another. When we returned to clear the dishes, Emerson had left. All our shoes stood in a line against the wall, clean, shining. I couldn't help crying. Early next morning, we left for the airport with all the jobs done.Now whenever I hear of a friend who's lost a loved one, I no longer call with the polite offer, "If there's anything I can do…" Instead I try to think of one specific(具体的)task that suits that man's need, like taking the dog to the boarding kennel, or house-sitting duringthe funeral. If the person asks, "How did you know I needed that one?" I reply, "Because a man once cleaned my shoes."(1)The writer didn't know what to put into the suitcases because ________.A she couldn't do it on her ownB she was too sad to do anythingC she wanted to take everything to SeattleD she was not good at housework(2)Here's a time line of what happened in the story.The writer's brother was killed in a car crash.→________→The writer washed theclothes.→They left for the airport.Which of the events should go in the empty box above?A Emerson came to clean the shoes.B The couple bathed the children.C They cleared the supper dishes.D The writer found the shoes cleaned.(3)If one of her friends has lost a loved one, what will the writer probably do?A Call her friend to ask what she can do.B Look after her friend's youngchildren. C Write a letter to comfort her friend. D Donate some money to her friend.(4)Which sentence best expresses the theme of this story?A One person's loss is another's gain.B An act of kindness is seldom rewarded.C A near neighbour is better than a brother far off.D Do something specific to help those in need.19. In 1990, Ed Viesturs started for the top of Mount Everest (29, 029 feet) from a high camp at 27, 000 feet.He planned to climb it without oxygen tank, something only a few climbers had managed to do.He'd failed twice, once getting with 300 feet of the top before turning back.He left his high camp at 1a.m., using a headlamp to find his way in the dark.He'd already been on the mountain for two months, receiving endurance and strength training in preparation for the Everest climb.He'd also lived through terrible cold, strong winds, and separation from friends and family."The common practice was to use oxygen when climbing, as ________, in fact, lowers the altitude (海拔) of the mountain by several thousand feet, "says Viesturs."If I couldn't climb Everest without oxygen tank, I wouldn't climb it.""You have to be physically fit, "he says."But the mental (精神的) part is big.It's so hard to keep going above 20, 000 feet."While making that final climb on Everest, he breathed 15times for every step.He would tell himself to first reach the rock 100 yards ahead.Then he'd find another rock, then another.Finally he stood on the top, with the whole world at his feet."It was one of those dream﹣come﹣true moments, "Viesturs says.Today, Viesturs makes his living in part as a speaker, talking about his climb of Everest and of the world's 13other highest mountain, all without oxygen.He helps people find the strength to overcome their difficulties.Finally, in his words, "The art of mountaineering is knowing when to go, when to stay, and when to turn back.We should go step when working toward our dreams.There are noshortcuts to the top."(1)What does the article mainly talk about?________A Viesturs'first successful climb of Mount Everest.B Viesturs'physical preparation for climbing Everest.C The difficulties that Viesturs has met in his life.D The lessons that Viesturs can share with others.(2)What do we know about Ed Viesturs?________A As soon as he reached Mount Everest,he set out for Everest climb.B He's been to the top of the world's 14highest mountain without oxygen.C Well prepared,he had no difficulty climbing the top of Mount Everest.D So far,he is the only one to have reached the top of Mount Everest without oxygen.(3)The first"________"in Paragraph 3 refers to (指的是)________.A being physical fit .B climbing Everest.C C.D climbing without oxygen.(4)Which sentence should go in the empty box in the last paragraph?________A I like being near the top of a mountain.B Life is like climbing amountain. C You never climb the mountain twice. D Over every mountain there isa path.20. Parents of very young children know this: You catch your child in the act of stealing the cookie﹣﹣the evidence of candy written on his or her face.However, you get a wide﹣eyed ________: "I didn't do it!"Learning to tell the truth, even at the risk of punishment, is an important part of moral (道德) development, and new research suggests it can take seven or more years for kids to get there.Early 2017 Professor Craig E.Smith published a study.He and his workmates chose48children between four and nine years of age.They told the kids a story about a boy or girl doing something wrong, such as taking a classmate's toy or candy, and then either lying about the wrongdoing to a parent or confessing (承认) it.In each case, they asked the children, How would the child feel? How would the mother feel?The children's answers were generally divided according to age, which is in agreement with the stolen candy, lying and getting unpunished.They imagined the parent in the study would be angry with the child who confessed.However, the seven﹣to﹣nine﹣year﹣olds were more likely (可能的) to think the child would feel better confessing the crime and that the parent would have positive (积极的) feelings towards a confessor.Smith says, "Kids of all ages who expect that a parent would feel happy about a child's confession are more likely to tell the truth rather than lie.Reward the honesty even if you feel you must punish the wrong action."He adds, what parents can learn from these studies is to listen calmly without getting angry right away when their child confesses.(1)What does the underlined word"________"in Paragraph 1mean?________A 委屈 B. C 否认 D.(2)Paragraph 2 mainly tell us________.A kids can't tell"right"from"wrong".B it takes time for kids to learn to tell the truth.C it's wrong to punish kids for telling the truth.D all the kids are willing to confess to a bad act.(3)What did Smith and his workmates find in their study?________A Older kids are more likely than younger children to confess to a bad act.B Younger children are more likely than older kids to confess to a bad act.C The four﹣to﹣five﹣year﹣olds would feel better confessing the crime.D The seven﹣to﹣nine﹣year﹣olds thought parents would be angry with their confessions.(4)According to Professor Smith,what can parents learn from these studies?________A Parents should at once punish the children who lied.B Parents should tell children the wrongness of lying.C Parents should never get angry after their children's confessions.D Parents should show positive feeling about their children's confessions.四、根据首字母填空21. (1)The ________faces were a sight, covered with dust. (boy)(2)You can enjoy water sports, or ________lie on the beach. (simple)(3)Some complain that visitors are ________too much stress on the environment. (cause) (4)People who often list things they are thankful for are happier and ________. (healthy) (5)Never give up! Pain always comes with ________.(achieve)(6)We can see different kinds of birds on this ________. (岛屿)(7)If you don’t have a dream, you’ve been old, even at ________. (二十)(8)The temperature ________a lot last night. (下降)(9)Tom, look at the sign! We’re not ________to park our car here. (允许)(10)When you think of Venice, does it bring any other ________ city to your mind? (欧洲的)五、填空22. Many people do not know what to do in face of a decision,big or small.Most decisions aren't life﹣changers.But often,the decision isn't between this or that; it's between acting or not.If this challenges you,here are some tips.Jog or ride a bike to nowhere.Just start moving in hopes of leaving the familiar.Walkdown every street or path you can find until you lose your way.Then,see where you end up.Remember what it felt like to wonder where you were going?Try to lose yourself more often.It'll make you better at making a decision.Sit outside without any technology for an hour.Let yourself get bored.Can you hear the birds singing?The wind blowing?Yourself breathing?Try to do this once a week,then every other day,then every day.One of the reasons we find it hard to make better decisions is that we keep getting attracted to new things.A break from the noise will lead you to the decision you need to make.Do something that scares you.People who have trouble making decisions fearmistakes.Tell someone you love them.Laugh out loud in a public place.Give a speech to a stranger.And when you do this,remember how you feel When you're sacred by a risky situation the next time,tell yourself that you didn't lie.And try to trust the process in the future.Some of these things may seem silly,but the more you do them,the more you'll control yourself.It doesn't matter where you're going.Just go.Once you start moving,you can always change direction.六、单词填空23. One day, Lauric saw the four March girls walking quietly through the garden. He(1)________them. They went to sometrees and sat there drawing and reading and sewing. Laurie (2)________behind a tree and watched them, feeling sad he hadno brothers or sisters. A squirrel suddenly ran down the tree and Beth looked 38. She saw Laurie and asked him tojoin them.He read to them while they drew and sewed. They talked about their 39"I want to travel around the world and see lots of places. Then I'd like to become a famous 40," said Laurie."I'd like a(6)________house, full of nice things---good food, pretty clothes, handsome furniture and pleasant people, "Meg said."Wouldn't you have a husband and some angelic children in your lovely house? " asked Laurie, smilingly."I said'(7)________people', you know. " Meg carefully tied up her shoes as she(8)________, so that no one saw her(9)________Jo continued, "I want to write books and get rich and famous. My works should be as(10)________as Laurie's music. "46 is to stay at home safe with Father and Mother, looking after the family. Nothing else. Since I had my littlepiano, I am perfectly(12)________, "said Beth quietly.Amy's modest wish was to go to Rome, do fine pictures, and be the best artist in the world."Every one of us,(13)________Beth, wants to be rich and famous. I wonder(14)________any of us will ever get our wishes, " saidLaurie.They decided to meet in ten years to see if their dreams 50.(1)A foundB followedC warnedD caught(2)A hidB cameC satD waited(3)A overB downC aroundD up(4)A dreamsB hobbiesC friendsD future(5)A writerB swimmerC doctorD musician(6)A lovelyB emptyC poorD small(7)A sadB pleasantC badD lovely(8)A waitedB smiledC spokeD spoken(9)A faceB mouthC legsD eyes(10)A terribleB famousC interestingD strange(11)A DreamB MineC HobbyD Future(12)A pleasedB richC famousD pleasant(13)A besidesB andC butD expect(14)A unlessB ifC whatD why(15)A came outB came overC came trueD came off七、汉译英:整句24. (1)昨天这个时候,我们正在上一节关于中国文化的课。
2017年江苏省扬州市中考数学试卷满分:150分 版本:苏科版一、选择题(本大题共有8小题,每小题3分,共24分)1.(2017江苏扬州)若数轴上表示-1和3的两点分别是点A 和点B ,则点A 和点B 之间的距离是 A .-4 B .-2 C .2 D .4【答案】D【解析】根据绝对值的几何意义结合点的位置,AB=13-+=4或AB =3(1)--=4. 2.(2017江苏扬州)下列算式的运算结果为6a 的是A .6a a ⋅ B .23()aC .33a a +D .6a a ÷【答案】B【解析】根据“同底数幂的乘法法则”67a a a =,根据“幂的乘方法则”236()a a =,根据“合并同类项法则”3332a a a +=,根据“同底数幂的除法法则”65a a a ÷=. 3.(2017江苏扬州)一元二次方程2720x x --=的实数根的情况是A .有两个不相等的实数根B .有两个相等的实数根C .没有实数根D .不能确定 【答案】A【解析】用根的判别式就可判断一元二次方程根的情况,因为24b ac -=57>0, 所以方程有两个不相等的实数根.4.(2017江苏扬州)下列统计量中,反映一组数据波动情况的是A .平均数B .众数C .频率D .方差 【答案】D【解析】“平均数”、“众数”是反映数据集中程度的两个量,而“频率”是“频数与总次数的比值”,“极差”和“方差”才是反映数据波动大小的量.5.(2017江苏扬州)经过圆锥顶点的截面的形状可能是【答案】B6.(2017江苏扬州)若一个三角形的两边长分别为2和4,则该三角形的周长可能是 A .6B .7C .11D .12【答案】CA B C D【解析】根据“两边之差<第三边<两边之和”,所以第三边大于2小于6,因此周长大于8小于12,所以三角形的周长可能是11.7.(2017江苏扬州)在一列数:1a ,2a ,3a ,…,n a 中,1a =3,2a =7,从第三个数开始,每一个数都等于它前两个数之积的个位数字,则这一列数中的第2017个数是 A .1 B .3 C .7 D .9 【答案】B【解析】根据数列的排列要求,通过逐一试举可以得到1234563,7,1,7,7,9a a a a a a ======,783,7a a ==,通过观察可以发现每6个数据就循环一次,而201763361÷=,所以201713a a ==.8.(2017江苏扬州)如图,已知△ABC 的顶点坐标分别为A (0,2)、B (1,0)、C (2,1),若二次函数21y x bx =++的图像与阴影部分(含边界)一定有公共点,则实数b 的取值范围是 A .2b ≤- B .2b <- C .2b ≥- D .2b >-【答案】C【解析】由二次函数系数a 、b 、c 的几何意义可知该函数的开口方向和开口大小是确定不变的,与y 轴的交点(0,1)也是确定不变的。
扬州市2017年初中毕业、升学统一考试物理试题一、选择题(本题共12小题,每小题2分,共24分。
每小题给出的四个选项中只有一个选项正确)1.下列属于电学单位的是A.牛顿 B.帕斯卡 C.安培 D.千克2.测量是物理实验的基本技能,下列测量工具的使用,方法正确的是A B C D3.如图,盲人过街提示器(即盲人砖)提示盲人的途径可能是A.可见光 B.红外线C.紫外线 D.声音4.天气炎热,小明在吃冷饮时观察到一些现象,下列分析正确的是A.将冷饮从冰箱里拿出时,感觉到“粘”手是凝固造成的B.包装盒外面的霜,是液化造成的C.打开冷饮包装纸,看到有“白气”生成是升华造成的D.吃冷饮时感到凉爽,主要是凝华造成的5.如图所示的现象中,由于光的折射形成的是A.树荫下的光斑 B.手影 C.月亮的“倒影” D.笔“折断”了6.下列用电器工作时,将电能全部转化为内能的是第3题图第11题图A .电风扇B .电水壶C .电视机D .微波炉7.扬州城区的高层建筑越来越多,但高空抛物却存在巨大的安全隐患,因为高处的物体具有较大的A .弹性势能B .重力势能C .体积D .阻力8.如图所示,菲菲和翔翔坐在车厢内,观察判断火车的运动情况。
菲菲:以窗外的动车为参照物,火车的位置变化了,因此火车是运动的。
翔翔:以窗外的站台为参照物,火车的位置没有变化,因此火车是静止的。
以上判断A .菲菲正确B .翔翔正确C .两人都正确D .两人都不正确9.将一本物理书从地面捡起放到课桌上,所做的功大约是A .0.2JB .2JC .20JD .200J10.如图,是手摇式手电筒,只要转动手电筒的摇柄,灯泡就能发光。
下列实验能揭示手电筒工作原理的是第10题图 A B C D11.如图,电源电压恒定不变,闭合开关,电压表的示数为U ;将另一电阻R 接入ab 间,再闭合开关,电压表示数变为0.4U ,则接入R 后A .R 和R 0两端电压之比为2﹕3B .通过R 0的电流变小C .R 0两端的电压变小D .R 0消耗的功率减小:0.84U 2/R 012.某同学从滑梯上匀速下滑,滑梯对该同学作用力F 的方向是第8题图第12题图 A B C D二、填空题(本题共10小题,每空1分,共28分)13.G20杭州峰会朝间,晚会“最忆是杭州”美轮美奂。
2017年初中毕业升学考试(江苏扬州卷)英语(带解析)学校:___________姓名:___________班级:___________考号:___________I、单选题(本大题共15小题,共15.0分)1.---Oh, The Old Man And The Sea! Whose book is it?---It isA.IB.meC.myD.mine2.---David, when do you get up every day?---I usually get up _______half past six. I‟m never late for school.A.inB.atC.onD.during3.--_______ pocket money do you usually get every month?-- Fifty yuan. What about you?A.How oftenB.How longC.How manyD.How much4.--This is between you and me.--- I promise. I won‟t tell others ______you say I can.A.unlessB.orC.sinceD.and5.--Finding information is not a big deal today..--- Well, the ______is how we can tell whether the information is useful or not.A.courageB.messageC.challengeD.knowledge6.--Where is your father, Helen?--- He is trying to ______a new shower in the bathroom.A.put outB.put inC.put throughD.put down7.--You look w orried. What‟s wrong?--- I went for a job interview yesterday and I ______the result.A.waited forB.was waiting forC.am waiting forD.will wait for8.When you _____ yourself with others, you miss the wonder of who you are.paremunicateC.contactD.connect9.--What age did you leave home?--- I left home at 18,Neil. I _____your city for five years.A.have gone toB.have beenC.have been inD.have come to10.--Did you and your sister go to Miss Brown‟s party yesterday?.---No. Neither of us ______.A.invitesB.invitedC.is invitedD.was invited11.--You look pretty in green, Kate.---Thank you. I like green. Green ______give me energy.A.canB.mustC.shouldD.has to12.一How do you like the piece of music Water by Tan Dun?一Wonderful! It‟s the ____one I‟ve ever listened to.A.betterB.bestC.worseD.worst13.一It is said that people born in the Year of Sheep are gentle.一Maybe,but for my mother,_______.In fact,she gets angry easily.A.that‟s not the caseB.that‟s all rightC.that‟s a good ideaD.that‟s for sure14.一What should we take when going birdwatching?一We should take a pair of binoculars ____________the birds clearly.A.seeB.seeingC.to seeD.sees15.一I can‟t believe you have finished the work.一My friends helped me out. Just as the saying goes,”__________.”A.Practice makes perfectB.Put all your eggs in one basketC.Burn the candle at both endsD.Many hands make light workII、完形填空(本大题共15小题,共22.5分)完形填空(共15小题,每小题1分,计15分)阅读下列短文,从文后各题所给的A.B.C.D四个选项中选出一个最佳答案。
扬州市2017年初中毕业、升学统一考试物理试题说明:1.本试卷共6页,包含选择题(第1题~第12题,共12题)、非选择题(第13题~第30题,共18题)两部分。
本卷满分100分,考试时间为100分钟。
考试结束后,请将本试卷和答题卡一并交回。
2.答题前,考生务必将自己的姓名、准考证号填写在答题卡相应的位置上,同时务必在试卷的装订线内将本人的姓名、准考证号、毕业学校填写好,在试卷第一面的右下角写好座位号。
3.所有的试题都必须在专用的“答题卡”上作答,选择题用2B铅笔作答、非选择题在指定位置用0.5毫米的黑色墨水签字笔作答。
在试卷或草稿纸上答题无效。
4.如有作图需要,请用2B铅笔作答,并请加黑加粗,描写清楚。
一、选择题(本题共12小题,每小题2分,共24分。
每小题给出的四个选项中只有一个....选项正确)1.下列属于电学单位的是A.牛顿B.帕斯卡C.安培D.千克2.测量是物理实验的基本技能,下列测量工具的使用,方法正确的是3.如图,盲人过街提示器(即盲人砖)提示盲人的途径可能是A.可见光B.红外线C.紫外线D.声音4.天气炎热,小明在吃冷饮时观察到一些现象,下列分析正确的是A.将冷饮从冰箱里拿出时.感觉到“粘”手是凝固造成的B.包装盒外面的霜,是液化造成的C.打开冷饮包装纸,看到有“白气”生成是升华造成的D.吃冷饮时感到凉爽,主要是凝华造成的5.如图所示的现象中,由于光的折射形成的是A.树荫下的光斑B.手影C.月亮的“倒影” D.笔“折断”了6.下列用电器工作时,将电能全部转化为内能的是A.电风扇B.电水壶C.电视机D.微波炉7.扬州城区的高层建筑越来越多,但高空抛物却存在巨大的安全隐患,因为高处的物体具有较大的A.弹性势能B.重力势能C.体积D.阻力8.如图所示,菲菲和翔翔坐在车厢内,观察判断火车的运动情况。
菲菲:以窗外的动车为参照物,火车的位置变化了,因此火车是运动的。
翔翔:以窗外的站台为参照物,火车的位置没有变化,因此火车是静止的。
以上判断A.菲菲正确B.翔翔正确C.两人都正确D.两人都不正确9.将一本物理书从地面捡起放到课桌上,所做的功大约是A.0.2J B.2J C.20J D.200J10.如图,是手摇式手电筒,只要转动手电筒的摇柄,灯泡就能发光。
下列实验能揭示手电筒工作原理的是11.如图,电源电压恒定不变,闭合开关,电压表的示数为U;将另一电阻R接入ab间,再闭合开关,电压表示数变为0.4U,则接入R后A.R和R0两端电压之比为2:3B.通过R0的电流变小C.R0两端的电压变小D.R0消耗的功率减小0.84U2 /R012.某同学从滑梯上匀速下滑,滑梯对该同学作用力F的方向是第12题图二、填空题(本题共10小题,每空1分,共28分)13.G20杭州峰会期间,晚会“最忆是杭州”美轮美奂。
如图,远处的激光束看上去是直的,这是因为▲ ;扇形光电背景与水中倒影完美结合,这是光的▲现象,成的是等大的▲(实/虚)像。
14.一种神奇的“纳米纸”,厚度约3×l0-8m,合▲ nm。
如图,水在“纳米纸”表面呈露珠状,两水滴靠近时常会自动结合在一起,这是因为▲ 。
第13题图第14题图第15题图15.如图,是汽油机模型,正在进行的是▲ 冲程,该冲程将▲ 能转化为▲ 能。
16.在下列三个小实验中。
如图甲所示,用带电塑料棒靠近不带电的铝箔条一端时,铝箔条会向塑料棒偏转,原因是▲ ;如图乙所示,将一薄塑料片水平插入磁铁和回形针之间,回形针▲ (会/不会)落下来;如图丙所示,将矿泉水瓶注满水并盖紧瓶盖,在a、b、c处开小孔(a和b在同一水平面上),只有▲ 孔有水喷出。
第16题图第17题图17.如图,是加热烤肠的情景,增加烤肠内能昀方法是▲ ;为了让烤肠不致被烤焦且均匀受热,店主将烤肠放在石子上烤而不直接放在铁锅内烤,是因为石头的比热容比铁▲ 。
18.我国自行设计的水下滑翔机“海翼”成功下潜至6329米,打破了世界纪录。
“海翼”的外形设计成流线型,是为了▲ ;在其外表穿上碳纤维材料特制的“衣服”以减小重力,这是因为碳纤维材料的▲ 小;“海翼”配备油囊装置,需要上浮时,油囊会鼓起来,使浮力▲ 重力。
第18题图第19题图19.如图,是塔式起重机上的滑轮组。
在将210N的重物匀速提高2m的过程中,作用在绳端的拉力为100N,则有用功是▲ J,该滑轮组的机械效率是▲ 。
20.如图甲,是仪征捺山地质公园的“玄武石”,其内部是多孔蜂窝状结构,该类石头的密度为2.8~3.3g/cm3。
小明想准确测出这块石头的密度。
第20题图(1)如图乙,该石头的质量为▲ g;他将该石头放入量筒中,液面位置如图丙所示,计算得到该石头的密度为▲ g/cm3。
(2)该石头密度的测量值偏▲,原因是:▲ 。
21.如图,电源电压恒定不变,R1=20Ω,闭合开关S、S1,电流表示数为0.3A,则电源电压为▲ V,l0s内电流通过R1产生的热量为▲ J;再闭合开关S2,调节R2,使电流表示数为0.6A,则此时变阻器R2的阻值为▲ Ω。
22.小华复习时,尝试对物理概念的定义方法进行归类整理,设计出如下表格:(1)整理时,小华对序号2的“问题”一栏把握不准,请你分析相关信息,帮助他写出来:怎样比较压力的▲ 。
(2)小明在与小华讨论中,发现表格中存在一个错误,应该改为▲ 。
(3)若用如图所示的图像来反映路程与时间之间的关系,则描述的运动是:▲ 。
三、解答题(本题共8小题,共48分。
解答24、25题时应有解题过程)23.(6分)按题目要求完成。
(1)如图甲,一束光从空气斜射入水中,请画出反射光线和折射光线。
(2)如图乙,根据小磁针的指向,标出螺线管的N、S极和电流方向。
(3)如图丙,使用笔画线代替导线完成电路。
要求:两灯并联,开关控制干路,电流表测量干路电流,导线不能交叉。
第23题图24.(6分)今年5月18日,我国在世界上第一次对可燃冰实现安全可控开采。
1m3可燃冰分解后,可释放出约150m3天然气,已知q天然气=2.1×107J/m3,C水=4.2×103J/(kg·℃)。
求:(1)lm3可燃冰释放出的天然气完全燃烧,放出的热量约是多少?(2)若上述热量全部被水吸收,可将多少kg的水从20℃加热至95℃?25.(6分)如图,是某一款电动平衡车,两车轮与地面的接触面积为40cm2。
求:(1)若地面受到的压强为5×104Pa,则该平衡车对地面的压力为多少?(2)若该平衡车20s内沿水平面匀速行驶l00m,受到的阻力为90N,则此过程中克服阻力做功的功率为多少?第24题图第25题图第26题图26.(7分)在“探究串联电路电压的特点”活动中。
(1)如图所示,连接电路时,至少需要▲ 根导线;实验中应选择规格▲ (相同/不同)的小灯泡。
(2)在测L1两端电压时,闭合开关,发现电压表示数为零,原因可能是▲ (填出一种即可)。
(3)小芳保持电压表的B连接点不动,只断开A连接点,并改接到C连接点上,测量L1两端电压。
她能否测出L2两端电压?▲ ,理由是▲ 。
(4)小明分别测出AB、BC、AC间的电压并记录在如下表格中,分析实验数据得出结论:串联电路总电压等于各部分电路两端电压之和。
请对小明的做法进行评价:▲ ,改进方法是▲ 。
27.(5分)某兴趣小组在“自制水膜透镜”活动中,如图所示,将内径4mm的细铁丝圆环在清水中浸一下后取出,布满圆环的水膜犹如透镜。
实验过程中,小张和小华发现该透镜的观察范围太小,想制作更大的水膜透镜,但又易破裂。
为研究液膜的增大与哪些因素有关,他们做出如下猜想:猜想一:可能与制作圆环的材料有关。
猜想二:可能与液体的种类有关。
(1)为了验证猜想一,小华选用细铁丝、细塑料片、细铝条制成圆环,改变圆环直径后,分别浸入水中获取液膜,测量出液膜即将破裂时的最大直径。
实验前,他应该控制三种材料横截面的▲ 和▲ 相同。
(2)为了验证猜想二,小张找来比水粘稠的透明的色拉油、胶水,将细铁丝圆环分别浸入两种液体中,重复上述实验,记录的数据如下表:于是小张就得出结论:液体越粘稠,液膜的最大直径越大。
针对小张的实验过程,请指出存在的两个主要问题:①▲ ;②▲ 。
(3)实验中,将大小相同的胶水膜和水膜,放在书本前相同距离处,发现透过水膜观察到的正立的“字”更大一些,原因是:▲ 。
28.(7分)在“探究二力平衡的条件”活动中。
(1)如果物体只受到两个力的作用,且处于▲ 状态,说明这两个力是相互平衡的。
由此,小明提出,能否利用如图甲所示的实验装置来探究二力平衡的条件?(2)小华认为,若采用小明的方案,必须测出物体所受的▲ 和▲ 的大小来进行比较。
研究发现,在小明的方案中,只能根据相互作用的关系直接测出▲ 的大小,在未知二力平衡条件的前提下,另一个力无法直接测量,所以这一方案无法实施下去。
(3)为此,两位同学不断改进并先后设计了三个实验方案,如图乙所示,请你判断出她们改进的先后顺序:▲ (用字母表示),这样的改进是为了减小▲ 对实验的影响。
第28题图乙第28题图丙(4)如图丙,是最终确认的实验方案。
此方案中,由于▲ ,故卡片的重力可忽略不计。
29.(4分)“暴走”是一种快速的徒步运动方式。
观察分析人走路情形,可以将人的脚视为一根杠杆,如图所示,行走时人的脚掌前端是支点,人体受到的重力是阻力,小腿肌肉施加的力是动力。
已知某人的质量为80kg,g=10N/kg。
(l)请画出小腿肌肉施加的拉力F的力臂l1。
(2)根据图片,估算小腿肌肉产生的拉力是▲ N。
(3)人向前走一步的过程中,重心升高约4cm,人克服自身重力约做了▲ J的功。
(4)通过查阅资料:人以不同方式徒步运动半小时,消耗人体内的能量如上表所示。
请你从能量角度分析“暴走”能健身的原因:▲ 。
30.(7分)阅读短文,回答问题无人机作为空中平台,以高分辨率高速摄像机、轻型光学相机、激光扫描仪等设备获取信息,用计算机对图像信息进行处理,并按照一定精度要求制作成图像。
无人机航拍影像具有高清晰、高现实性的优点。
下表是某小型无人机的部分参数:(电池容量=放电电流×放电时间,例如,1mAh是指以1mA的电流能连续工作1h。
帧·秒-1是指每杪拍摄的画面数)第30题图(1)人们是利用遥控器通过▲ 传输信息操控无人机的,其有效操控距离至少为▲ km。
(2)小轿车在高速公路上限速120km/h。
如图甲所示,交警部门利用无人机进行高速公路通行情况的实时监测。
一辆小轿车在通行0.5m的过程中,高速摄像机拍摄帧数为110帧,据此判断小轿车是否超速?▲ (是/否)。
(3)如图乙,是无人机竖直向上运动的wt图像,由图像可知,在0-5s内,无人机受到的升力▲ (>/=/<)重力。