2018-2019秋季新海实验中学九年级期末(无听力-无答案)
新海实验中学教育集团2018-2019学年度第一学期九年级英语期末试卷第一卷选择题（共90分）一、听力部分。
（共30分）略二、单项选择。
（本题共15小题；每小题1分，满分15分）从每题所给的A、B、C、D四个选项中选出最佳选项。
21. -Have you seen _________ movie Wolf Warriors II?-Yes. This is _________ educational film and it has become one of the most popular films in the world.A. a; /B. the; anC. a; theD. /; an22. -The red dress _________ be Linda’s, but I’m not sure.-No, it _________ be. It is too small for her.A. may; mustn’tB. may; can’tC. can’t; may notD. must; can’t23. -_________ popular Tik Tok(抖音) is among the young nowadays!-So it is. More than 200 million people share short videos on it every day in China.A. WhatB. What anC. HowD. How an24. -What shall we do to kill time?-Well. _________ it is Wanda Cinema’s half-price day, why not go to watch a film?A. SinceB. WhileC. UnlessD. Though25. -Look, how wonderful this paper-cutting is!-So it is. Paper-cutting is a/an _________ Chinese art with a long history.A. commonB. modernC. importantD. traditional26. -Do you often watch the show “I Am the Actor Champion”(《我就是演员》)?-Yes. It is _________ a wonderful programme that it attracts _________ many famous actors to attend it.A. such; soB. such; suchC. so; suchD. so; so27. Children should tell the truth instead of _________ stories whenever he or she has done something wrong.A. making upB. putting upC. taking upD. setting up28. -China has the _________ population in the world.-Yes, exactly. And _________ man is bigger than that of women.A. most; a number ofB. most; the number ofC. largest; the number ofD. largest; a number of29. -Millie will have a birthday party tonight. I wonder if you _________ it.-To tell the truth, I won’t unless I _________.A. attend; will be invitedB. will attend; will be invitedC. attend; am invitedD. will attend; am invited30. I can’t describe how exited I’m feeling right now. It’s _________ my ability of expressing myself.A. beyondB. overC. aboveD. against31. There will be fewer workers in factories in the future because most work _________ by robots.A. is doneB. was doneC. will be doneD. will do32. -I like the two dresses, but I can only afford _________ of them.-I suggest you taking the white one.A. allB. bothC. neitherD. either33. I really like the family photo _________ I took on my grandpa’s 80th birthday.A. whatB. thatC. whenD. who34. -Could you please tell me _________ “The Reader”, a TV program hosted by Dong Qing?-Well, it is fun and teaches us a lot of knowledge.A. how do many people likeB. how many people watchC. why many people likeD. when many people watch35. -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三、完形填空。
（共15小题；每小题1分，满分15分）阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中选出最佳选项。
There was once a young man who liked puppets(木偶) so much that he was apprenticed(当学徒) to a master puppet-maker. __36__, the young man was not very clever. His __37__ and other apprentices were always telling him he had no ability for making puppets, and that he would not __38__.Even so, he enjoyed it so much that he worked day after day to __39__. Although he devoted much time to do it, they would __40__ find something wrong with the puppets he made, and finally drove him out of the workshop.He wasn’t going to __41__, so the young man decided that from then on he would spend all his time making just one kind of puppet. And __42__ he found a fault(瑕疵) in his puppet, he would throw it away and start again. With each __43__ attempt(尝试), his puppet became a little bit better. Years passed, his puppet was much better than anything his old apprentices could make, but he __44__ making improvements. Living like that, the man wasn’t making any money, and many people __45__ him and thought how silly he was.When he was an old man, his puppet was __46__ wonderful. Finally one day, after years of __47__, he finished his puppet, and said, “I can’t find anything wrong with it. This time it is __48__.” And for the first time in all those years, instead of __49__ his puppet away, he put it on the shelf, feeling __50__ and happy. The puppet gave that old man more joy than any otherfamous puppet-lovers ever got.36. A. Sadly B. Gently C. Luckily D. Usually37. A. father B. teacher C. classmate D. friend38. A. miss B. forget C. succeed D. listen39. A. improve B. form C. connect D. remind40. A. never B. seldom C. sometimes D. always41. A. give up B. give out C. carry up D. carry out42. A. whoever B. whenever C. however D. whatever43. A. usual B. old C. easy D. new44. A. finished B. avoided C. kept D. stopped45. A. looked over B. cheered up C. laughed at D. stayed out46. A. hardly B. possibly C. simply D. really47. A. effect B. effort C. spirit D. value48. A. modern B. perfect C. priceless D. expensive49. A. hiding B. fixing C. covering D. throwing50. A. talented B. surprised C. worried D. satisfied四、阅读理解。
2018-2019学年江苏省连云港市新海实验中学九年级(下)期中化学试卷
2018-2019学年江苏省连云港市新海实验中学九年级（下）期中化学试卷
一、选择题（本题包括12小题，每小题2分，共24分．每小题只有一个选项符合题意）
1．（2分）2018年6月16日国务院发布了关于全面加强生态环境保护，坚决打好污染防治攻坚的意见。
下列做法不利于环境保护的是（）
A．回收金属，节能减污B．植物造林，防沙降尘
C．外出就餐，超量点菜D．处理废水，达标排放
2．（2分）成语是中华文化的瑰宝。
下列成语涉及化学变化的是（）
A．绳锯木断B．滴水成冰C．死灰复燃D．聚沙成塔
3．（2分）学校午餐食谱：米饭、鱼、油煎鸡蛋，为使营养均衡，你认为应补充（）A．黄瓜B．牛奶C．油条D．红烧肉
4．（2分）下列实验操作中正确的是（）
A．测溶液pH B．稀释浓硫酸
C．滴加液体D．加热液体
5．（2分）下列化学用语表示正确的是（）
A．两个氢分子﹣﹣﹣﹣﹣﹣﹣﹣﹣2H
B．铜离子﹣﹣﹣﹣﹣﹣﹣﹣﹣Cu+2
C．小苏打﹣﹣﹣﹣﹣﹣﹣﹣﹣NaHCO3
D．氧化铁﹣﹣﹣﹣﹣﹣﹣﹣﹣FeO
6．（2分）宏观与微观相互联系是化学最特征的思维方式。
下列说法错误的是（）
A．缉毒犬能根据气味发现毒品，是因为分子在不断地运动
B．金刚石和石墨物理性质差异大，是因为原子的排列方式不同
C．水通电分解，是因为水分子间的间隔变大了。
2019-2020 秋季连云港市新海实验中学九年级月考(word版 包含答案)
新海实验中学2019-2020学年度第一学期九年级英语月考试卷第一卷选择题（共95分）一、听力部分。
（共30分）略二、单项选择。
（本题共15小题；每小题1分，满分15分）从每题所给的A、B、C、D四个选项中选出最佳选项。
21. Life is like _________ Ocean. Only _________ strong-willed can reach the other side.A. a; /B. the; aC. an; theD. /; a22. It’s good _________ you to keep trying when you have something difficult _________.A. to; to doB. of; doingC. for; doD. of; to do23. Jim works _________ the chief engineer in a big company. He always works _________ high standards.A. for; forB. as; asC. as; toD. for; to24. Not only the students but their teacher _________ curious about the strange animals after hearing about it.A. hasB. wereC. isD. are25. —Would you like black or white coffee? —Well, I _________ coffee _________ milk.A. prefer; toB. prefer; withC. like; betterD. would rather; than26. Green represents _________ and nature. When you feel weak, you can wear green.A. sadnessB. purityC. joyD. energy27. —What did she say just now? —She asked _________.A. that I liked English bestB. what is wrong with meC. where was the nearest hospitalD. if I would go shopping with her28. —Let’s go to see a film this weekend. Can we go on Saturday or Sunday?—_________ is OK. I’m not free at weekends.A. NeitherB. EitherC. EveryD. Each29. Read this article, _________ you’ll understand that not everything can be bought with money.A. orB. andC. butD. so30. The kind teacher devoted all her time she had _________ her students.A. helpB. to helpC. helpingD. to helping31. We are not sure if it _________ tomorrow. If it _________, we won’t go hiking.A. will rain; rainsB. will rain; will rainC. rains; rainsD. rains; will rain32. Miss Lu had a day off because she felt _________ sick this morning.A. a bit ofB. a little bitC. a little ofD. a bit little33. —We’ll meet all kinds of difficulties in our lives in the future.—We should learn to be _________ any chanllenge!A. confident enough to take onB. active enough to take upC. enough careful to take try onD. enough patient to try out34. —Would you like two strong black coffees?—No, thanks. I _________ drink it. It hurts my stomach.A. almostB. hardlyC. onlyD. exactly35. —The music is too loud. Could you turn it down, please? —_________.A. Sure. Thank you for telling me.B. Sorry, I didn’t notice it.C. Well, I’m glad to hear that.D. OK, go ahead.三、完形填空。
2024届江苏省连云港市海州区新海实验中学物理九上期末学业质量监测模拟试题含解析
2024届江苏省连云港市海州区新海实验中学物理九上期末学业质量监测模拟试题考生须知：1．全卷分选择题和非选择题两部分，全部在答题纸上作答。
选择题必须用2B铅笔填涂；非选择题的答案必须用黑色字迹的钢笔或答字笔写在“答题纸”相应位置上。
2．请用黑色字迹的钢笔或答字笔在“答题纸”上先填写姓名和准考证号。
3．保持卡面清洁，不要折叠，不要弄破、弄皱，在草稿纸、试题卷上答题无效。
一、选择题1．如图所示的电路中，小灯泡L1、L2规格相同，闭合开关S后，发现L1不亮，L2发光．此电路的故障可能是（）A．灯L1短路B．灯L2短路C．灯L1断路D．开关S 接触不良2．关于家庭电路，下列说法正确的是（）A．我们用测电笔来判断导线是否带电B．在家庭电路中，同时工作的用电器越多，总电阻越大C．家庭电路中保险丝熔断时，一定是短路造成的D．使用测电笔时，手一定要接触笔尾部金属体3．下列说法中正确的是（）A．用锯锯木头，锯条发热，这是通过热传递的方法改变物体的内能B．在干旱地区，农业灌溉中用管道输水代替沟渠输水是为了减慢蒸发C．用热水袋取暖是通过做功的方法改变物体的内能D．反复弯折铁丝使其发热，是通过热传递的方法改变物体的内能4．如图所示甲、乙两套装置所用滑轮质量均相等，用它们分别将所挂重物在相等时间内竖直向上匀速提升相同高度．若G1＝G2，所用竖直向上的拉力分别为F1和F2，拉力做功的功率分别为P1和P2，两装置的机械效率分别为η1和η2（忽略绳重和摩擦）．则下列选项正确的是A．F1＞F2；η1＝η2；P1＝P2B．F1＞F2；η1＞η2；P1＞P2C．F1＜F2；η1＜η2；P1＜P2D．F1＜F2；η1＞η2；P1＞P25．在如图甲所示电路中，当闭合开关后，两个电压表指针偏转均如图乙所示，则电阻R1和R2两端的电压分别为（）A．2.3V、9.2V B．11.5V、2.3V C．2.3V、11.5V D．9.2V、2.3V6．如图是小灯泡的电流与两端电压的关系图象，下列说法正确的是( )A．小灯泡的电阻不变，是7.6ΩB．小灯泡的电流随两端电压的增大而增大的越来越慢C．小灯泡的电阻与两端电压有关，随电压的增大而减小D．小灯泡的实际功率与两端电压有关，随电压的增大而减小7．P OS刷卡机的广泛应用给人们的生活带来了便利。
江苏省连云港新海实验中学九年级数学下学期阶段测试试题(无答案)
友情提醒： 1.全卷满分150分，答题时间120分钟.2.请将答案全部填涂在答题卡的指定区域内．．．．．．．．．．．．．．．．．．. 一、选择题（本大题共有10小题，每小题3分，满分30分） 1. 31-的相反数是【 ▲ 】 A ．3 B.－3 C. 31 D. 31- 2. 30cos 等于【 ▲ 】A ．33 B. 21 C.22 D.233. 2012年3月5日上午，国务院总理温家宝向第十一届全国人大五次会议作政府工作报告时提出，2012年中央财政要进一步增加教育投入，国家财政性教育经费支出21984.63亿元.将21984.63用科学记数法可表示为【 ▲ 】A ．21.98463⨯103B ．0.2198463⨯105C ．2.198463⨯104D ． 2.198463⨯1034.下列运算正确的是【 ▲ 】 A ．523a a a =⋅ B ．5210a a a =÷ C ．2242a a a += D ．()2239a a +=+5. 若m =30，则下列不等关系正确的是【 ▲ 】A ．5<<4mB ．6<<5mC ．7<<6mD ．8<<7m6.二元一次方程组⎩⎨⎧=+=-24y x y x 的解是【 ▲ 】 A ．⎩⎨⎧==11y x B ．⎩⎨⎧==37y x C ．⎩⎨⎧-==73y x D ．⎩⎨⎧-==13y x 7.如图，AB ∥CD ，点E 在BC 上，且CD =CE ，∠ABC 的度数为32°，∠D 的度数为【 ▲ 】A ．32°错误！未找到引用源。
B ．68°错误！未找到引用源。
C ．74°错误！未找到引用源。
D ．84°8.如图，在梯形ABCD 中，AD ∥BC ，AC ⊥AB ，AD ＝CD ，53sin =∠DAC ，BC ＝10，则AB 的值【 ▲ 】 A ．3 B ．6 C ．8 D ．99.从边长为a 的正方形内去掉一个边长为b 的小正方形（如图1），然后将剩余部分剪拼成一个矩形（如图2），上述操作所能验证的等式是【 ▲ 】A ．(a －b )2＝a 2－2ab ＋b 2B ．a 2－b 2＝(a ＋b )(a －b )C ．(a ＋b )2＝a 2＋2ab ＋b 2D ．a 2＋ab ＝a (a ＋b )10.如图，已知△ABC 中，∠ABC =90°，AB =BC ，三角形的顶点在相互平行的三条直线l 1、l 2、l 3上，且l 1、l 2之间的距离为1 ， l 2、l 3之间的距离为2 ，则AC 的长是【 ▲ 】A ．52B ．23C ．4D ．10二、填空题（本大题共8小题，每小题3分，满分24分）11.计算：123-=▲ ．12.因式分解：a2b＋ab2= ▲ ．13.化简：baabab---= ▲ ．14.使25-=xy有意义的x的取值范围是▲ ．15.若关于x的一元二次方程(a－2) x2－2x+1=0有两个实数根，则a的取值范围是▲ ．16.如图，将一根25cm长的细木棒放入底面直径为10cm、高为310cm的圆柱体无盖盒子中，则细木棒露在盒外面的最短长度是▲ cm．17.把三张大小相同的正方形卡片A、B、C叠放在一个底面为正方形的盒底上，底面未被卡片覆盖的部分用阴影表示,若按图1摆放时，阴影部分的面积为S1；若按图2摆放时，阴影部分的面积为S2，则S1▲ S2（填“>”、“<”或“=”）.18.如图，图①是一块边长为1，周长记为P1的正三角形纸板，沿图①的底边剪去一块边长为12的正三角形纸板后得到图②，然后沿同一底边依次剪去一块更小的正三角形纸板（即其边长为前一块被剪掉正三角形纸板边长的21）后，依次得图③，图④，…，记第()3≥nn块纸板的周长为P n，则1--nnPP= ▲ ．三、解答题（本大题共9小题，满分96分）19.（本题满分12分）（1）计算：45tan2)3(202+---π.（2）已知3-=x，求()1111xx⎛⎫++⎪+⎝⎭的值．20.（本题满分12分）（1）解方程：x2＋2x－1=0.（2）解不等式组：⎪⎩⎪⎨⎧->++≤332142xxxx，，并将解集在数轴上表示出来．．．．．．．．．．．．.21.（本题满分8分）当太阳光线与地面成60o角时，在坡度为i=1∶2的斜坡上的一棵树AB落在坡面上的影子AC长为5m，落在水平面上的影子CD长为52m，求这棵树的高度.（第21题图）ABC D22.（本题满分8分）某校学生会准备调查本校九年级同学每天（除课间操外）课外锻炼的平均时间．（1）确定调查方式时，①甲同学说：“我到九年级1班去调查全体同学”；②乙同学说：“我到体育场上去询问参加锻炼的同学”；③丙同学说：“我到九年级每个班去随机调查一定数量的同学”．上面同学所说的三种调查方式中最为合理的是▲（只填写序号）；（2）他们采用了最为合理的调查方式收集数据，并绘制出如图1所示的条形统计图和如图2所示的扇形统计图，请将图．．．1．补充完整．．．．；（3）若该校九年级共有1120名同学，请你估计九年级每天（除课间操外）课外锻炼平均时间不大于20分钟的人数(结果取整数)． (注：图2中相邻两虚线形成的圆心角为30°)23. （本题满分8分）图1为一锐角是30°的直角三角尺，其边框为透明塑料制成（内、外直角三角形对应边互相平行）．将三角尺移向直径为4cm的⊙O，它的内Rt△ABC的斜边AB恰好等于⊙O 的直径，它的外Rt△A′B′C′的直角边A′C′恰好与⊙O相切（如图2），求直角三角尺边框的宽．24.（本题满分10分）如图1，某商场有一双向运行的自动扶梯，扶梯上行和下行的速度保持不变且相同，甲、乙两人同时站上了此扶梯的上行和下行端，甲站上上行扶梯的同时又以0.8 m/s 的速度往上跑，乙站上下行扶梯后则站立不动随扶梯下行，两人在途中相遇，甲到达扶梯顶端后立即乘坐下行扶梯，同时以0.8 m/s的速度往下跑，而乙到达底端后则在原地等候甲．图2中线段OB、AB分别表示甲、乙两人在乘坐扶梯过程中，离扶梯底端的路程．．．．．．．．y（s）之间的部分函数关系，结合图象解答下列问题：（1）点B的坐标是▲；（2）求AB所在直线的函数关系式；（3）乙到达扶梯底端后，还需等待多长时间，甲才到达扶梯底端？图2图1yxABO 7.530（第23题图）ABCA'B'O图2O宽宽宽C'B'CBA图125.（本题满分12分）如图1，点P是线段AB的中点，分别以AP和BP为边在线段AB的同侧作等边三角形APC和等边三角形BPD，连接CD，得到四边形ABDC.（1）在图1中顺次连接边AC、AB、BD、CD的中点E、F、G、H，则四边形EFGH的形状是▲；（2）如图2，若点P是线段AB上任一点，在AB的同侧作△APC和△BPD，使PC=PA，PD=PB，APC BPD∠=∠，连接CD，得四边形ABDC，则（1）中结论还成立吗？说明理由；（3）如图3，若点P是线段AB外一点，在△APB的外部．．作△APC和△BPD，使PC=PA，PD=PB，且90APC BPD∠=∠=°，请你先补全图．．．．3．，再判断四边形EFGH的形状，并说明理由．26. （本题满分12分）某文化用品商店新进一批毕业纪念册，该纪念册每本进价10元，售价定为每本18元.该商店计划出台如下促销方案：“凡一次购买该纪念册6本以上的（不含6本），每多买1本，所购买的每本纪念册的售价就降低0.2元；但是每本纪念册的最低售价不低于13元.”（1）问一次购买该纪念册至少多少本时才能用最低价购买？（2）求当一次购买该纪念册()6>x x本时，商店所获利润W（元）与购买量x（本）之间的函数关系式;（3）在研讨促销方案过程中，店员发现了一个奇怪的现象：“如果商店一次售出30本纪念册所获的利润，比一次售出26本纪念册所获的利润低.”请你解释其中的道理，并根据其中的道理帮助该商店修改一下促销方案，使卖的纪念册越多商店所获的利润越大．．．．．．．．．．．．．．．．．．27.（本题满分14分）如图，以等边△OAB的边OB所在直线为x轴，点O为坐标原点，使点A在第一象限建立平面直角坐标系，其中△OAB边长为4个单位，点P从O点出发沿折线OAB向B点以2个单位/秒的速度向终点B点运动，点Q从B点出发以1个单位/秒的速度向终点O点运动，两个点同时出发，运动时间为t（秒）.（1）请用t表示点P的坐标▲ 和点Q的坐标▲ ，其中t的取值范围是▲ ；（2）当t= ▲ 时，PQ⊥OA；当t= ▲ 时，PQ⊥AB；当t= ▲ 时，PQ⊥OB；（3）△OPQ面积为S，求S关于t的函数关系式并指出S的最大值；（4）若直线PQ将△OAB分成面积比为3∶5两部分，求此时直线PQ的解析式；若不能，请说明理由.。
江苏省连云港市新海实验中学九年级2018-2019学年度第二学期数学第一次月考(无答案)
连云港市新海中学2018-2019学年度第二学期第一次月考数学试卷（时间：120分钟 满分：150分）一、选择题（每题3分，共24分）1. 下列四个数中，最大的数是（ ）A. -2B. 31 C. 0 D. 6 2. 将数5570000用科学计数法表示正确的是（ ）A. 51057.5⨯B. 61057.5⨯C. 71057.5⨯D. 81057.5⨯ 3. 不等式组{2x −1⩾58−4x <0的解集在数轴上表示为 ( )A. B. C. D.A. 522B. 2029C. 423D. 524A. 1个B. 2个C. 3个D. 4个二、填空题（每题3分，共24分）9. 若代数式2-x 有意义，则x 的取值范围是_________10. 分解因式：2422++a a =_______________ 11. 若关于x 的一元二次方程042=--m x x 有两个不相等的实数根，则实数m 的取值范围是____________12. 如图，扇形OAB 的圆心角为120°，半径为3，则扇形的弧长为______（结果保留π）13. 如图，在⊙O 中，弦AB=6，圆心O 到AB 的距离OC=2，则⊙O 的半径长为______.14. 如图所示，△ABC 中，AC=8，BC=5，AB 的垂直平分线DE 交AB 于点D ，交边AC 于点E ，则△BCE 的周长为 .15. 若同时抛掷两枚质地均匀的骰子，则事件“两枚骰子朝上的点数互不相同”的概率是___16. 如图所示，正方形ABCD 对角线AC 所在直线上有一点O ，OA=AC=2，将正方形绕O 点顺时针旋转60°，在旋转过程中，正方形扫过的面积是___．三、解答题（共102分）17. （12分）（1）化简：222131+-∙⎪⎭⎫ ⎝⎛--+a a a a （2）计算：()()202-60sin 12-1-2+︒⨯ 18. （6分）解方程：0212-11=+-x x 19. （6分）解方程组：⎩⎨⎧=+=+27271523y x y x 20. （8分）在边长为1个单位长度的正方形网格中建立如图所示的平面直角坐标系，△ABC 的顶点都在格点上，请解答下列问题：（1）作出△ABC 向左平移4个单位长度后得到的△111C B A ，并写出点1C 的坐标；（2）作出△ABC 关于原点O 对称的△222C B A ，并写出点2C 的坐标；（3）已知△ABC 关于直线l 对称的△333C B A 的顶点3A 的坐标为（-4，-2），请直接写出直线l 的函数解析式.（3）该班参加乒乓球活动的4位同学中，有3位男同学（分别用A，B，C表示）和1位女同学（用D表示），现准备从中选出两名同学参加双打比赛，用树状图或列表法求出恰好选出一男一女的概率23.（10分）我省某苹果基地销售优质苹果，该基地对需要送货且购买量在2000kg--5000kg （含2000kg和5000kg）的客户有两种销售方案（客户只能选择其中一种方案）：方案A：每千克5.8元，由基地免费送货。
2023届江苏省连云港市新海实验中学九年级英语第一学期期末质量检测试题含解析
2022-2023学年九上英语期末模拟试卷考生请注意：1．答题前请将考场、试室号、座位号、考生号、姓名写在试卷密封线内，不得在试卷上作任何标记。
2．第一部分选择题每小题选出答案后，需将答案写在试卷指定的括号内，第二部分非选择题答案写在试卷题目指定的位置上。
3．考生必须保证答题卡的整洁。
考试结束后，请将本试卷和答题卡一并交回。
Ⅰ. 单项选择1、(2014•盐城市)---Could you tell me _________?---Sure. Walk straight along this street and you'll find it.A．how can I get to the post office B．where is the post officeC．which is the way to the post office D．how far the post office is2、—The Chinese Poetry Conference(《中国诗词大会》)on CCTV is a great .—You are right．More and more people begin to enjoy the beauty of the poetry．A．project B．success C．chance D．experiment3、Two ______ of the doctors in this hospital ______ women.A．third; are B．third; is C．thirds; are D．thirds; is4、一Jim looks sleepy in class. What's wrong with him?一He stayed up late last night. He a composition from 7 o'clock to midnight.A．wrote B．writesC．has written D．was writing5、I used to quarrel a lot with my parents，but now we _______just fine together．A．get along B．get up C．get away D．get off6、Jane any letter to her friends since she left home.A．doesn’t write B．didn’t write C．hasn’t written D．won’t write7、prize for the winner of the competition is two-week holiday in Paris.A．A; the B．A; 不填C．The; a D．The; 不填8、The film Avengers: Infinity War (复仇者联盟3：无限战争) is so exciting that I want to watch it _______ second time. A．a B．an C．the D．/9、“One Belt(带)，One Road”will serve to________markets for China as well as other countries along．A．put up B．set upC．take up D．open up10、— The police advise us not to transfer money to a stranger without telling our family.—___________ important advice they gave us!A．How B．What an C．How a D．WhatⅡ. 完形填空11、Why is setting goals important? Because goals can help you do, be, and experience everything you want in life. Instead of just letting life happen to you, goals allow you to make your life happen.Successful people 1 how their life should be and set lots of goals. By setting goals you are taking control of your life. It’s like having a 2 to show you where you want to go. Think of it this way. There are 3 drivers. One has a destination（目的地）in mind (her goal) which can be found on a map. She can drive straight there without any wasted time or wrong turns. The other driver has no goals or destination or map. She starts off at the same time from the same place as the first driver, 4 she drives aimlessly around, never getting anywhere, just using up gas (汽油). Which driver do you want to be?Winners in life set goals and follow through on them. They decide what they want in life and then get there by making5 and setting goals6 people just let life happen by accident. Goals aren’t difficult to set—and they aren’t difficult to reach. It’s up to you to find out what your goals really are. You are the one who must7 what to achieve and in what direction to aim your life. Research tells us that when we write a goal down, we are more likely to achieve it. Written goals can be reviewed regularly, and have8 power. Like a contract（契约）with9 , they are harder to forget. Also 10 you write your goals in a sepecial way, you are able to make yourself continuously aware of situations that will bring you nearer to your goal.1．A．imagine B．discuss C．experience D．show2．A．guide B．friend C．map D．sign3．A．two B．many C．some D．few4．A．or B．and C．but D．so5．A．plans B．money C．friends D．maps6．A．Lucky B．Young C．Common D．Unsuccessful7．A．practice B．change C．accept D．decide8．A．less B．fewer C．more D．better9．A．myself B．yourself C．themselves D．itself10．A．although B．until C．when D．beforeⅢ. 语法填空12、综合填空。
2024届江苏省连云港市新海实验中学数学九上期末经典试题含解析
2024届江苏省连云港市新海实验中学数学九上期末经典试题注意事项1．考生要认真填写考场号和座位序号。
2．试题所有答案必须填涂或书写在答题卡上，在试卷上作答无效。
第一部分必须用2B 铅笔作答；第二部分必须用黑色字迹的签字笔作答。
3．考试结束后，考生须将试卷和答题卡放在桌面上，待监考员收回。
一、选择题（每题4分，共48分）1．如图图形中，是中心对称图形的是（ ）A ．B ．C ．D ．2．如图，在平面直角坐标系中，四边形OABC 为菱形，()0,0O ，()4,0A ，60AOC ∠=，则对角线交点E 的坐标为( )A ．()2,3B ．()3,2C ．()3,3D ．()3,3 3．某车的刹车距离y （m ）与开始刹车时的速度x （m/s ）之间满足二次函数2120y x =（x ＞0），若该车某次的刹车距离为5 m ，则开始刹车时的速度为（ ）A ．40 m/sB ．20 m/sC ．10 m/sD ．5 m/s 4．如图，点M 是矩形ABCD 的边BC ，CD 上的点，过点B 作BN AM ⊥于点P ，交矩形ABCD 的边于点N ，连接DP ．若6AB =，4=AD ，则DP 的长的最小值为( )A ．2B ．1313C ．4D ．55．计算：x （1﹣21x ）÷221x x x++的结果是（ ） A ．11x + B ．x+1 C ．11x x -+ D ．1x x+ 6．如图，在△OAB 中，顶点O （0，0），A （﹣3，4），B （3，4），将△OAB 与正方形ABCD 组成的图形绕点O 逆时针旋转，每次旋转90°，则第2019次旋转结束时，点D 的坐标为（ ）A ．（3，﹣10）B ．（10，3）C ．（﹣10，﹣3）D ．（10，﹣3）7．小马虎在计算16-13x 时，不慎将“-”看成了“+”，计算的结果是17，那么正确的计算结果应该是（ ）A ．15B ．13C ．7D ．1-8．已知⊙O 的直径为12cm ，如果圆心O 到一条直线的距离为7cm ，那么这条直线与这个圆的位置关系是（ ）A ．相离B ．相切C ．相交D ．相交或相切9．如图，A 、B 、C 是小正方形的顶点，且每个小正方形的边长为1，则tan ∠BAC 的值为（ ）A ．12 B ．1 C ．33 D ．310．如图，已知▱ABCD 中，E 是边AD 的中点，BE 交对角线AC 于点F ，那么S △AFE ：S 四边形FCDE 为( )A ．1：3B ．1：4C ．1：5D ．1：611．如图，在ABC 中，若2//,,43ADDE BC DE cm DB ==，则BC 的长是（ ）A ．7cmB ．10cmC ．13cmD ．15cm12．如图，点A 、B 、C 在⊙O 上，若∠BAC ＝45°，OB ＝2，则图中阴影部分的面积为（ ）A ．π﹣2B ．213π-C ．π﹣4D ．223π- 二、填空题（每题4分，共24分）13．一元二次方程2340x x --=的解为________．14．飞机着陆后滑行的距离s （单位：m ）关于滑行的时间t （单位：s ）的函数解析式是2200.5s t t =-，飞机着陆后滑行______m 才能停下来.15．若函数21y x a =-+是正比例函数，则a =__________．16．如图，圆形纸片⊙O 半径为 52，先在其内剪出一个最大正方形，再在剩余部分剪出 4个最大的小正方形，则 4 个小正方形的面积和为_______．17．已知543x y z ==（x 、y 、z 均不为零），则32x y y z +=-_____________． 18．如图，PA ，PB 是⊙O 的切线，切点分别是点A 和B ，AC 是⊙O 的直径． 若∠P ＝60°，PA ＝6，则BC 的长为__________．三、解答题（共78分）19．（8分）如图，在某广场上空飘着一只气球P ，A 、B 是地面上相距90米的两点，它们分别在气球的正西和正东，测得仰角∠PAB=45°，仰角∠PBA=30°，求气球P 的高度（精确到0.1米）．20．（8分）解方程：x 2＋x ﹣3＝1．21．（8分）如图，抛物线4m ≤与直线交于A 、B 两点.点A 的横坐标为－3，点B 在y 轴上，点P 是y 轴左侧抛物线上的一动点，横坐标为m ，过点P 作PC ⊥x 轴于C ，交直线AB 于D .（1）求抛物线的解析式；（2）当m 为何值时，2BPD OBDC S S =四边形；（3）是否存在点P ,使△PAD 是直角三角形，若存在，求出点P 的坐标；若不存在，说明理由.22．（10分）如图，点F 为正方形ABCD 内一点，△BFC 绕点B 逆时针旋转后与△BEA 重合（1）求△BEF 的形状（2）若∠BFC=90°，说明AE ∥BF23．（10分）如图，四边形ABCD 内接于⊙O ，BD 是⊙O 的直径，AE CD ⊥，垂足为E ，DA 平分BDE ∠． （1）求证：AE 是⊙O 的切线；（2）12DBC BDC ∠=∠,4BD =，求AE 的长．24．（10分）已知：如图，平行四边形ABCD ，对角线AC 与BD 相交于点E ，点G 为AD 的中点，连接CG ，CG 的延长线交BA 的延长线于点F ，连接FD ．（1）求证：AB=AF ；（2）若AG=AB ，∠BCD=120°，判断四边形ACDF 的形状，并证明你的结论．25．（12分）如图，一次函数y ＝kx +b 与反比例函数y ＝m x的图象交于A （2，3），B （﹣3，n ）两点．（1）求反比例函数的解析式；（2）过B 点作BC ⊥x 轴，垂足为C ，若P 是反比例函数图象上的一点，连接PC ，PB ，求当△PCB 的面积等于5时点P 的坐标．26．给出定义，若一个四边形中存在相邻两边的平方和等于一条对角线的平方，则称该四边形为勾股四边形． （1）在你学过的特殊四边形中，写出两种勾股四边形的名称；（2）如图，将△ABC 绕顶点B 按顺时针方向旋转60°得到△DBE ，连接AD ，DC ，CE ，已知∠DCB=30°． ①求证：△BCE 是等边三角形；②求证：DC 2+BC 2=AC 2，即四边形ABCD 是勾股四边形．参考答案一、选择题（每题4分，共48分）1、D【分析】根据中心对称图形的概念和识别．【题目详解】根据中心对称图形的概念和识别，可知D 是中心对称图形，A 、C 是轴对称图形，D 既不是中心对称图形，也不是轴对称图形．故选D ．【题目点拨】本题考查中心对称图形，掌握中心对称图形的概念，会判断一个图形是否是中心对称图形．2、D【分析】过点E 作EF x ⊥轴于点F ，由直角三角形的性质求出EF 长和OF 长即可．【题目详解】解：过点E 作EF x ⊥轴于点F ，∵四边形OABC 为菱形，60AOC ∠=，∴1302AOE AOC ∠=∠=，OB ⊥AC ，60FAE ∠=， ∵()4,0A ，∴4OA =，∴114222AE AO ==⨯=， ∴112AF AE ==，2222213EF AE AF =-=-=， ∴413OF AO AF =-=-=，∴()3,3E ．故选D ．【题目点拨】本题考查了菱形的性质、勾股定理及含30°直角三角形的性质，正确作出辅助线是解题的关键．3、C【解题分析】当y=5时，则21520x =，解之得10x =（负值舍去），故选C 4、A【分析】由BN AM ⊥可得∠APB =90°，根据AB 是定长，由定长对定角可知P 点的运动轨迹是以AB 为直径，在AB 上方的半圆，取AB 得中点为O ，连结DO ，DO 与半圆的交点是DP 的长为最小值时的位置，用DO 减去圆的半径即可得出最小值．【题目详解】解：∵BN AM ⊥，∴∠APB =90°，∵AB=6是定长，则P 点的运动轨迹是以AB 为直径，在AB 上方的半圆，取AB 得中点为O ，连结DO ，DO 与半圆的交点P'是DP 的长为最小值时的位置，如图所示：∵6AB =，4=AD ，∴'3==P O AO ，由勾股定理得：DO =5，∴''2=-=DP DO P O ，即DP 的长的最小值为2，故选A ．【题目点拨】本题属于综合难题，主要考查了直径所对的角是圆周角的应用：由定弦对定角可得动点的轨迹是圆，发现定弦和定角是解题的关键．5、C【分析】直接利用分式的性质化简进而得出答案．【题目详解】解：原式＝()()()2111x x x x x +-⋅+ ＝11x x -+． 故选：C ．【题目点拨】此题主要考查分式的运算，解题的关键是熟知分式的运算法则.6、C【分析】先求出AB=1，再利用正方形的性质确定D （-3，10），由于2019=4×504+3，所以旋转结束时，相当于△OAB 与正方形ABCD 组成的图形绕点O 顺时针旋转3次，由此求出点D 坐标即可．【题目详解】∵A (﹣3，4)，B (3，4)，∴AB =3+3=1．∵四边形ABCD 为正方形，∴AD =AB =1，∴D (﹣3，10)．∵2019=4×504+3，∴每4次一个循环，第2019次旋转结束时，相当于△OAB 与正方形ABCD 组成的图形绕点O 顺时针旋转3次，每次旋转90︒，刚好旋转到如图O A B C D ''''的位置．∴点D的坐标为(﹣10，﹣3)．故选：C．【题目点拨】本题考查了坐标与图形变化-旋转：图形或点旋转之后要结合旋转的角度和图形的特殊性质来求出旋转后的点的坐标．常见的是旋转特殊角度如：30°，45°，10°，90°，180°．7、A【题目详解】试题分析：由错误的结果求出x的值，代入原式计算即可得到正确结果．解：根据题意得：16+13x=17，解得：x=3，则原式=16﹣13x=16﹣1=15，故选A考点：解一元一次方程．8、A【分析】这条直线与这个圆的位置关系只要比较圆心到直线的距离与半径的大小关系即可．【题目详解】∵⊙O的直径为12cm，∴⊙O的半径r为6cm，如果圆心O到一条直线的距离d为7cm，d>r，这条直线与这个圆的位置关系是相离．故选择：A．【题目点拨】本题考查直线与圆的位置关系问题，掌握点到直线的距离与半径的关系是关键．9、B【分析】连接BC，由网格求出AB，BC，AC的长，利用勾股定理的逆定理得到△ABC为等腰直角三角形，即可求出所求．【题目详解】如图，连接BC，由网格可得AB=BC=5，AC=10，即AB2+BC2=AC2，∴△ABC为等腰直角三角形，∴∠BAC=45°，则tan∠BAC=1，故选B．【题目点拨】本题考查了锐角三角函数的定义，解直角三角形，以及勾股定理，熟练掌握勾股定理是解本题的关键．10、C【解题分析】根据AE∥BC，E为AD中点，找到AF与FC的比，则可知△AEF面积与△FCE面积的比，同时因为△DEC 面积=△AEC面积，则可知四边形FCDE面积与△AEF面积之间的关系．【题目详解】解：连接CE，∵AE∥BC，E为AD中点，∴12 AE AFBC FC==．∴△FEC面积是△AEF面积的2倍．设△AEF面积为x，则△AEC面积为3x，∵E为AD中点，∴△DEC面积=△AEC面积=3x．∴四边形FCDE面积为1x，所以S△AFE：S四边形FCDE为1：1．故选：C．【题目点拨】本题考查相似三角形的判定和性质、平行四边形的性质，解题关键是通过线段的比得到三角形面积的关系． 11、B 【分析】根据平行线分线段成比例定理，先算出25AD AB =，可得25DE BC =，根据DE 的长即可求得BC 的长． 【题目详解】解：∵23AD DB =， ∴25AD AB =， ∵//DE BC ， ∴25AD DE AB BC ==， ∵4DE cm =，∴BC 10cm =．【题目点拨】 本题考查了平行线分线段成比例定理，由题意求得25AD AB =是解题的关键． 12、A【分析】先证得三角形OBC 是等腰直角三角形，通过解直角三角形求得BC 和BC 边上的高，然后根据S 阴影=S 扇形OBC -S △OBC 即可求得． 【题目详解】∵∠BAC ＝45°，∴∠BOC ＝90°，∴△OBC 是等腰直角三角形，∵OB ＝2，∴△OBC 的BC 边上的高为：2=∴BC =∴S 阴影=S 扇形OBC -S △OBC =2902123602ππ⨯-⨯=-， 故选：A ．【题目点拨】 本题考查了扇形的面积公式：2360n R S π⋅=（n 为圆心角的度数，R 为圆的半径）．也考查了等腰直角三角形三边的关系和三角形的面积公式．二、填空题（每题4分，共24分）13、14x =，21x =-【解题分析】利用“十字相乘法”对等式的左边进行因式分解.【题目详解】由原方程，得()()410x x -+=，则40x -=或10x +=，解得14x =，21x =-.故答案为：14x =，21x =-.【题目点拨】本题考查了解一元二次方程-因式分解法.因式分解法就是先把方程的右边化为0，再把左边通过因式分解化为两个一次因式的积的形式，那么这两个因式的值就都有可能为0，这就能得到两个一元一次方程的解，这样也就把原方程进行了降次，把解一元二次方程转化为解一元一次方程的问题了（数学转化思想）.14、200【分析】要求飞机从滑行到停止的路程就，即求出函数的最大值即可.【题目详解】解：()()222200.50.5404002000.520200s t t t t t =-=--++=--+ 所以当t=20时，该函数有最大值200.故答案为200.【题目点拨】本题主要考查了二次函数的应用，掌握二次函数求最值的方法，即公式法或配方法是解题关键.15、1【分析】根据正比例函数的定义即可得出答案.【题目详解】∵函数21y x a =-+是正比例函数∴-a+1=0解得：a=1故答案为1.【题目点拨】本题考查的是正比例函数，属于基础题型，正比例函数的表达式为：y=kx(其中k≠0).16、16【分析】根据题意可知四个小正方形的面积相等，构造出直角△OAB ，设小正方形的面积为x ，根据勾股定理求出x值即可得到小正方形的边长，从而算出4 个小正方形的面积和.【题目详解】解：如图，点A 为上面小正方形边的中点，点B 为小正方形与圆的交点，D 为小正方形和大正方形重合边的中点，由题意可知：四个小正方形全等，且△OCD 为等腰直角三角形，∵⊙O 半径为 52，根据垂径定理得： ∴OD=CD=522=5， 设小正方形的边长为x ，则AB=12x ， 则在直角△OAB 中，OA 2+AB 2=OB 2，即()()22215=522x x ⎛⎫++ ⎪⎝⎭， 解得x=2，∴四个小正方形的面积和=242=16⨯.故答案为：16.【题目点拨】本题考查了垂径定理、勾股定理、正方形的性质，熟练掌握利用勾股定理解直角三角形是解题的关键．17、32【分析】根据题意，可设x=5k ，y=4k ，z=3k ，将其代入分式即可． 【题目详解】解：∵543x y z == ∴设x=5k ，y=4k ，z=3k ，将其代入分式中得：5k 4k 33212k 6k 2x y y z ++==--． 故答案为32．【题目点拨】本题考查了比例的性质，解此类题可根据分式的基本性质先用未知数k 表示出x ，y ，z ，再代入计算．18、23【分析】连接AB ，根据PA ，PB 是⊙O 的切线可得PA=PB ，从而得出AB=6，然后利用∠P ＝60°得出∠CAB 为30°，最后根据直角三角形中30°角的正切值进一步计算即可.【题目详解】如图，连接AB ，∵PA ，PB 是⊙O 的切线，∴PA=PB ，∵∠P ＝60°，∴△ABP 为等边三角形，∴AB=6，∵∠P ＝60°，∴∠CAB=30°，易得△ABC 为直角三角形，∴BC tan 30AB=︒, ∴BC=AB ×tan30︒=23故答案为：23【题目点拨】本题主要考查了圆中切线长与三角函数的综合运用，熟练掌握相关概念是解题关键.三、解答题（共78分） 19、气球P 的高度约是32.9米．【分析】过点P 作PC ⊥AB 于C 点，由PC 及∠A 、∠B 的正切值表示出AB ，即AB=tan tan PC PC A B+∠∠，求得PC 即可．【题目详解】过点P 作PC ⊥AB 于C ，设PC = x 米，在Rt△PAC中，∠PAB=45°，∴ AC =" PC" = x米，在Rt△PBC中，∠PBA=30°，∵ tan∠PBA =PC BC，∴333xBC x==（米）又∵ AB = 90米，∴ AB = AC + CB =390x x+=米∴9031x=+≈32.9（米），答：气球P的高度约是32.9米．20、x1＝，x2＝【解题分析】利用公式法解方程即可.【题目详解】∵a＝1，b＝1，c＝﹣3，∴b2﹣4ac＝1＋12＝13＞1，∴x＝，∴x1＝，x2＝．【题目点拨】本题主要考查解一元二次方程，熟练掌握一元二次方程的几种解法是解答的关键.21、（1）y=x1+4x-1；（1）∴m=,-1，或-3时S四边形OBDC=1SS△BPD【解题分析】试题分析：（1）由x=0时带入y=x-1求出y的值求出B的坐标，当x=-3时，代入y=x-1求出y的值就可以求出A的坐标，由待定系数法就可以求出抛物线的解析式；（1）连结OP，由P点的横坐标为m可以表示出P、D的坐标，可以表示出S四边形OBDC和1S△BPD建立方程求出其解即可．（3）如图1，当∠APD=90°时，设出P点的坐标，就可以表示出D的坐标，由△APD∽△FCD就可与求出结论，如图3，当∠PAD=90°时，作AE⊥x轴于E，就有,可以表示出AD，再由△PAD∽△FEA由相似三角形的性质就可以求出结论．试题解析：∵y=x-1，∴x=0时，y=-1，∴B（0，-1）．当x=-3时，y=-4，∴A（-3，-4）．∵y=x1+bx+c与直线y=x-1交于A、B两点，∴∴∴抛物线的解析式为：y=x1+4x-1；（1）∵P点横坐标是m（m＜0），∴P（m，m1+4m-1），D（m，m-1）如图1①，作BE⊥PC于E，∴BE=-m．CD=1-m，OB=1，OC=-m，CP=1-4m-m1，∴PD=1-4m-m1-1+m=-3m-m1，∴解得：m1=0（舍去），m1=-1，m3=如图1②，作BE⊥PC于E，∴BE=-m．PD=1-4m-m1+1-m=1-4m-m1，解得：m=0（舍去）或m=-3，∴m=,-1，或-3时S四边形OBDC=1S△BPD；）如图1，当∠APD=90°时，设P（a，a1+4a-1），则D（a，a-1），∴AP=m+4，CD=1-m，OC=-m，CP=1-4m-m1，∴DP=1-4m-m1-1+m=-3m-m1．在y=x-1中，当y=0时，x=1，∴（1，0），∴OF=1，∴CF=1-m．AF=4∵PC⊥x轴，∴∠PCF=90°，∴∠PCF=∠APD，∴CF∥AP，∴△APD∽△FCD，∴解得：m=1舍去或m=-1，∴P（-1，-5）如图3，当∠PAD=90°时，作AE⊥x轴于E，∴∠AEF=90°．CE=-3-m，EF=4，AF=4PD=1-m-（1-4m-m1）=3m+m1．∵PC⊥x轴，∵PC⊥x轴，∴∠DCF=90°，∴∠DCF=∠AEF，∴AE∥CD．∴AD=(-3-m)∵△PAD∽△FEA，∴∴m=-1或m=-3∴P（-1，-5）或（-3，-4）与点A重合，舍去，∴P（-1，-5）．考点：二次函数综合题.22、（1）等腰直角三角形（2）见解析【分析】（1）利用正方形的性质得BA ＝BC ，∠ABC ＝90°，然后根据旋转的定义可判断旋转中心为点B ，旋转角为90°，根据旋转的性质得∠EBF ＝∠ABC ＝90°，BE ＝BF ，则可判断△BEF 为等腰直角三角形；（2）根据旋转的性质得∠BEA ＝∠BFC ＝90°，从而根据平行线的判定方法可判断AE ∥BF ．【题目详解】（1）△BEF 为等腰直角三角形，理由如下：∵四边形ABCD 为正方形，∴BA ＝BC ，∠ABC ＝90°，∵△BFC 逆时针旋转后能与△BEA 重合，∴旋转中心为点B ，∠CBA 为旋转角，即旋转角为90°；∵△BFC 逆时针旋转后能与△BEA 重合，∴∠EBF ＝∠ABC ＝90°，BE ＝BF ，∴△BEF 为等腰直角三角形；（2）∵△BFC 逆时针旋转后能与△BEA 重合，∴∠BEA ＝∠BFC ＝90°，∴∠BEA ＋∠EBF ＝180°，∴AE ∥BF ．【题目点拨】本题考查了旋转的性质：对应点到旋转中心的距离相等；对应点与旋转中心所连线段的夹角等于旋转角；旋转前、后的图形全等．也考查了正方形的性质．23、（1）见解析；（2）AE【分析】（1）连接OA, 根据角平分线的定义及等腰三角形的性质得出OAD EDA ∠=∠，从而有//OA CE ，再通过AE CE ⊥得出90OAE AED ∠=∠=︒，即AE OA ⊥，则结论可证；（2）根据12DBC BDC ∠=∠ 得30,60DBC BDC ∠∠=︒=︒，再利用角平分线的定义和直角三角形两锐角互余得出30ABD EAD ∠=∠=︒，然后利用含30°的直角三角形的性质和勾股定理即可求出AE 的长度． 【题目详解】（1）证明：连接OA ，DA平分BDE∠，BDA EDA∴∠=∠．OA OD=，ODA OAD∴∠=∠，OAD EDA∴∠=∠，//OA CE∴，180OAE AED∴∠+∠=︒，AE CE⊥,90OAE AED∴∠=∠=︒，AE OA∴⊥，∴AE是⊙O的切线；（2）BD是直径，90BCD BAD∴∠=∠=︒．又12DBC BDC∠=∠，30,60 DBC BDC∴∠=∠=︒︒，180120BDE BDC∴∠=︒-∠=︒．∵DA平分BDE∠，60BDA EDA∴∠=∠=︒，30ABD EAD∴∠=∠=︒．在Rt ABD△中，90,30,4 BAD ABD BD∠=∠==，2AD∴=．在Rt AED 中，90,30AED EAD ∠=∠=，1ED ∴=,AE ∴==【题目点拨】本题主要考查角平分线的定义，等腰三角形的性质，切线的判定，勾股定理，含30°的直角三角形的性质，掌握角平分线的定义，等腰三角形的性质，切线的判定，勾股定理，含30°的直角三角形的性质是解题的关键．24、（1）证明见解析；（2）结论：四边形ACDF 是矩形．理由见解析.【分析】（1）只要证明AB=CD ，AF=CD 即可解决问题；（2）结论：四边形ACDF 是矩形．根据对角线相等的平行四边形是矩形判断即可；【题目详解】（1）证明：∵四边形ABCD 是平行四边形，∴AB ∥CD ，AB=CD ，∴∠AFC=∠DCG ，∵GA=GD ，∠AGF=∠CGD ，∴△AGF ≌△DGC ，∴AF=CD ，∴AB=AF ．（2）解：结论：四边形ACDF 是矩形．理由：∵AF=CD ，AF ∥CD ，∴四边形ACDF 是平行四边形，∵四边形ABCD 是平行四边形，∴∠BAD=∠BCD=120°，∴∠FAG=60°，∵AB=AG=AF ，∴△AFG 是等边三角形，∴AG=GF ，∵△AGF ≌△DGC ，∴FG=CG ，∵AG=GD ，∴AD=CF ，∴四边形ACDF 是矩形．【题目点拨】本题考查平行四边形的判定和性质、矩形的判定、全等三角形的判定和性质等知识，解题的关键是正确寻找全等三角形解决问题.25、（1）y＝6x；（2）点P的坐标为（﹣8，﹣34），（2，3）．【分析】（1）将A坐标代入反比例函数解析式中求出m的值，即可确定出反比例函数解析式；（2）由B点（-3，n）在反比例函数y＝6x的图象上，于是得到B（-3，-2），求得BC=2，设△PBC在BC边上的高为h，根据三角形的面积公式列方程即可得到结论．【题目详解】（1）∵反比例函数y＝mx的图象经过点A（2，3），∴m＝1．∴反比例函数的解析式是y＝6x；（2）∵B点（﹣3，n）在反比例函数y＝6x的图象上，∴n＝﹣2，∴B（﹣3，﹣2），∴BC＝2，设△PBC在BC边上的高为h，则12BC•h＝5，∴h＝5，∵P是反比例函数图象上的一点，∴点P的横坐标为：﹣8或2，∴点P的坐标为（﹣8，﹣34），（2，3）．【题目点拨】此题考查了一次函数与反比例函数的交点问题，涉及的知识有：待定系数法求函数解析式，坐标与图形性质，一次函数与坐标轴的交点，以及反比例函数的图象与性质，熟练掌握待定系数法是解本题的关键．26、(1)正方形、矩形、直角梯形均可；(1)①证明见解析②证明见解析【分析】（1）根据定义和特殊四边形的性质，则有矩形或正方形或直角梯形；（1）①首先证明△ABC≌△DBE，得出AC=DE，BC=BE，连接CE，进一步得出△BCE为等边三角形；②利用等边三角形的性质，进一步得出△DCE是直角三角形，问题得解．【题目详解】解：（1）正方形、矩形、直角梯形均可；（1）①∵△ABC≌△DBE，∴BC=BE，∵∠CBE=60°，∴△BCE是等边三角形；②∵△ABC≌△DBE，∴BE=BC，AC=ED；∴△BCE为等边三角形，∴BC=CE，∠BCE=60°，∵∠DCB=30°，∴∠DCE=90°，在Rt△DCE中，DC1+CE1=DE1，∴DC1+BC1=AC1．考点：四边形综合题．。
2023学年江苏省连云港市海州区新海实验中学英语九年级第一学期期末学业质量监测试题含解析
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Ⅰ. 单项选择1、—Put waste bag into the dustbin, please.—It’s not waste bag. It’s my shopping bag.A．the;a B．a; the C．a; a D．/; the2、________you please help me with my math problem?—OK, after I finish mine, I'll help you.A．Must B．Could C．May D．Might3、－Oh, my God! I can't find my key to the office.－Don't worry. Perhaps it _________ at your home.A．left B．has left C．was left D．had left4、--Where’s your father? We haven’t seen each other .---____________.A．He has been to America B．He has gone to EnglandC．He is going to England D．He would visit my grandparents5、What does your father do, lily?－He is _________. His job is to make sure that drivers obey the traffic roles.A．an actor B．a policeman C．a waiter D．a reporter6、He remembered ________ the windows, but they’re open now.A．closed B．close C．closing D．to close7、— ____ do you go to the library?— Once a week.A．How often B．How farC．How much D．How long8、I can’t hear the teacher with so much noise outside.A．clearly B．slowly C．warmly D．bravely9、—Have you already made a(n) _____ about the plan?—Not yet. We still need to discuss it.A．effort B．noise C．mistake D．agreement10、—If you have any trouble, please call me. —. But I can manage it.A．I’m sorry to hear that B．It’s very kind of youC．I have no trouble D．I will think it overⅡ. 完形填空11、Once upon a time, there was an emperor. He 1 buying and looking at clothes. 2 he spent all his money in dress. One day, two brothers came to the city. They told the emperor that they could 3 beautiful clothes for him, but he must give 4 silk and gold. The brothers were 5 people. They 6 all the silk and gold for themselves. They told the emperor the clothes they made were special because only 7 people could see them. When the emperor 8 the clothes all he could see was his underwear(内衣). But he didn’t want people to think he was stupid(愚蠢),So he said the clothes were 9 . Then he walked around the city in his new clothes until one boy 10 "The emperor isn’t wearing any clothes!”1．A．loved B．hated C．stopped2．A．Though B．So C．Because3．A．buy B．make C．wash4．A．us B．him C．them5．A．kind B．bad C．good6．A．opened B．folded C．kept7．A．silly B．honest C．clever8．A．put on B．take off C．give away9．A．broken B．beautiful C．bright10．A．sang B．explained C．shoutedⅢ. 语法填空12、One day Bob took two of his friends into the mountains. They put up their tents and then rode off to a forest to see how the trees were growing.In the afternoon when they were about ten kilometers from their camp，it started to snow.1．(many)and more snow fell. Soon Bob could hardly see his hands 2．his face. He could not find the road. Bob 3．(know)there were two roads. One road went to the camp，and 4．other went to his house. But all was white snow. Everything was the same. How could he take his 5．(friend)back to the camp?Bob had an idea. The horses！Let the horses take them 6．！But what would happen 7．the horses took the road to his house？That would be a trip of thirty-five kilometers in such cold weather!It was 8．(get)late. They rode on and on. At last the horses stopped. Where were they？9．of them could tell. John looked around.10．was that under the tree？It was one of their tents!Ⅳ. 阅读理解A13、Do you like traveling? Here is some advice.Always wear your most comfortable clothes when going on long journeys.Traveling on trains or buses can be boring, so take a good book to read.If you are going somewhere sunny, remember to wear sunblocks(防晒霜）and sunglasses.Always take a camera with you to capture those special moments.Be careful with your things whenever you go to busy places, like a train station. There are often thieves there.Most countries have lower prices for students, so if you have one, take your student card with you and save money.If you travel abroad, remember to take your passport, Whatever you do, don’t lose it!1．If you go to Hainan Island for a trip in summer, you should take ______with you.A．some fruit and drinksB．warm clothes and sports shoesC．sunglasses and sunblocks2．According to the passage, _____ is a good way to keep away from boredom(单调).A．reading a good bookB．taking a cameraC．listening to music3．You must always _______ because there are often thieves at some busy places.A．put your things down B．look after your things wellC．take few things with you4．If a student shows __ to the shop assistant, he can buy some presents at lower prices while traveling.A．his things B．his passport C．his student card5．The underlined word “capture” in this passage means ________.A．感受B．拍摄C．控制B14、People with disabilities make up a large part of the population. It is reported that over 35 million Americans have physical, mental, or other disabilities. About half of these disabilities are “developmental", that is to say, they happen before people’s twenty-second birthday, often from born conditions, and are hard enough to affect three or more areas of development, such as movement, communication, occupation, etc. Most other disabilities are considered “adventitious" (偶然的), i.e., accidental or caused by outside forces.Before the 20th century, only a small percentage of people with disabilities survived for long. Medical treatment for these disabilities was unavailable. Improvements in medicine and social services have created a climate in which peoplewith disabilities can expect to have such basic (基本的) needs as food, shelter, and medical treatment. Unluckily, these basics are often not available. Human rights such as the right to vote, marry, get an education, and achieve work have traditionally been not agreed on the basis of disability.In recent ten years, the disability rights movement has been organized to fight against these disagreements of human rights. Congress(国会) replied by passing important laws recognizing(承认) people with disabilities as a protected group under human rights laws.It is reported that more than half of qualified(有资格的) Americans with disabilities don’t have work, and a lot of those who do work are out of work. About two-thirds live at or below the official lowest level.Obvious difficulties, especially in communication and public awareness(意识), prevent disabled people from taking part in society. For example, while no longer stopped by law from marrying, a person unable to communicate is excluded(排斥) from society and social activities which might lead to the development of long-term relationships.Only when public attitudes(态度) advance as far as laws have, disabled people will be fully able to take their rightful place in society.1．. A “developmental" disability ______.A．is caused by forcesB．happens in youth and affects developmentC．develops very slowly over timeD．is getting harder and harder2．Most disabled people used to die early because ______.A．they were not very well looked afterB．disabilities destroyed body functions terriblyC．they were too poor to get right treatmentD．medical treatment were not available3．The sentence “Still today, people with disabilities must fight to live their lives freely.” should be placed at the beginning of Paragraph _________.A．One B．TwoC．Three D．Four4．Which of the following cannot be inferred（推断）from the passage ?A．The public tend to(倾向) look down on the disabled people.B．Many disabled people may remain single(保持单身) for their whole life.C．The disabled people feel inferior(不及) to those common people.D．Discriminatory(歧视性) laws prevent the disabled from mixing with others.5．The best title for this passage might be ______.A．The Causes for DisabilitiesB．Medical Treatments for DisabilitiesC．The physical difficulties of the DisabledD．Disadvantages of People with DisabilitiesC15、Last July, my 12-year-old car died on California's Santa Ana Freeway. It was an hour before sunset, and I was 25 miles from home. I couldn't reach anyone to pick me up, so I decided to take a bus. Not knowing the routes, I figured I'd just head east. A bus pulled up, and I asked the driver how far she was going. “Four more lights,” she said. There was another bus I could take from there. This clearly was going to be a long night. She dropped me off at the end of her route and told me which bus to look for.After waiting 30 minutes, I began to think about a very expensive taxi ride home. Then a bus pulled up. There was no lighted number above its windshield (挡风玻璃). It was out of service. But the door opened, and I was surprised to find that it was the s ame driver. “I just can't leave you here,” she said. “This isn't the nicest place. I'll give you a ride home.” “You'll drive me home in the bus?” I asked, perplexed (困惑). “No, I'll take you in my car,” she said. “It's a long way,” I protested. “Come on, ” she said. “I have nothing else to do.”As we drove from the station in her car, she began telling me a story. A few days earlier, her brother had run out of gas.A good Samaritan picked him up, took him to a service station and then back to his car. “I'm j ust passing the favor along, ” she said. When I offered her money as a thank-you, she wouldn't hear of it. “That wouldn't make it a favor, ” she said. “Just do something nice for somebody. Pass it along.”1．Why did the writer say that he would have a long night?A．He wondered how long he had to wait for the next bus.B．No driver would give him a ride.C．He didn't know the routes.D．He perhaps would have to take a taxi.2．Judging from its context, the place where the writer waited for the second bus was_____.A．very quiet and peacefulB．dark without street lightsC．neither clean nor beautifulD．a little unsafe3．The bus driver drove the writer home later because ________.A．she happened to go in the same directionB．she wanted to do something good for other peopleC．her brother told her to do soD．she wanted to earn more money4．The bus driver hoped that the writer ________.A．would do as she didB．would keep her in memoryC．would give the money to othersD．would do her a favorD16、A priest(牧师) had a cat that climbed up a tree in his backyard and then was afraid to come down. The tree was not strong enough to climb, so the priest decided that if he tied a rope to his car and drove away so that the tree bent(弯曲) down, he could then reach up and get the kitty. He did so, checking his progress in the car again and again, then work out if he went just a little bit further, the tree would be bent enough for him to reach the kitty. But as he moved a little further forward, the rope broke.The tree went “boing!” and t he kitty at once sailed through the air — out of sight. The priest felt terrible. He walked all over the neighborhood asking people if they’d seen his kitty. Nobody had seen a lost kitty.So, he prayed, “______________________” and went on about his busine ss.Several days later he was at the grocery store, meeting one of his church members. He happened to look into her shopping cart and was amazed to see cat food. Before this woman was a cat hater and everyone knew it, so he asked her, “Why are you buying cat food when you hate cats so much?”She replied, “You won’t believe this,” and told him how her little girl had been begging(恳求) her for a cat, but she kept refusing. Then a few days before, the child begged again, so the Mom finally told her little girl, “Well, if _________, you can keep it.” She told the priest, “I watched my child go out in the yard, get on her knees, and ask God for a cat. You won’t believe this, but I saw it with my own eyes. A cat suddenly came flying out of the blue sky, with its pa ws spread out, and landed right in front of her. ”1．The priest drove his car to bend the tree in order to __________.A．get his kitty down from the treeB．persuade his kitty to come downC．feed the kittyD．see if the rope was strong enough2．The underlined sentence in Paragraph 3 probably means that the priest __________.A．was happy he didn’t have to care for the kittyB．hoped his neighbors would look after his catC．thought his kitty might be lost or killedD．didn’t want to see his kitty any more3．Which is the most possible to complete the sentence in the last paragraph?A．the priest sends you a catB．God gives you a catC．you have enough moneyD．you have enough time4．Which may be the best title of this passage?A．A flying cat B．A lucky girlC．God sent her a cat D．An unlucky priestE17、Many young people want to become pop-stars. It is their great ambition（雄心）in life. They think pop-stars earn a lot of money, they lead interesting and exciting lives, thousands of fans love them, and they become famous!Yes, but first they must become stars. Most performers star life with a group. This is the pattern nowadays. But there are many groups and competitions are hard. Groups appear and disappear almost overnight. Only a small number survive. Almost without exception they have to work very hard before they reach the top.And very few reach the top and stay there. In England there are perhaps thirty or so groups at the top. Most of these do not earn so much money, perhaps 500 pounds each time they perform. W hat’s more, they have quite a lot of expenses(开销). They have to pay a manager, for example. He is the key person in their lives and takes about 20% of their earnings-perhaps more. Then there are their clothes, their instruments and their van. Sometimes they are still playing for the last two items.And don’t forget, they have to travel a great deal-sometimes 2,000 miles in one week. At times they even sleep in their van instead of a hotel, just to save money.So now, what do you think? Are pop-stars so rich? And do they have such exciting lives?1．Which of the following is the reason that many young people want to become pop-stars?A．Living an exciting life.B．Becoming a rich man.C．Being loved by thousands of fans.D．All of the above.2．Why is the group’s m anager well paid? Because __________.A．he runs this groupB．he looks after themC．he is important to themD．he buys them clothes and instruments3．The writer makes us believe ___________.A．it is pleasant to become a pop-starB．if you work very hard in pop groups, you will reach the topC．pop-stars are neither too rich nor too happyD．general persons had better not dream of pop-starF18、Doctor Seuss was born in 1904. By the middle 1950s, he had become one of the best-loved and most successful children's book writers in the world. His books are very popular with young readers. They enjoy the invented words and the pictures of unusual funny animals and plants.In 1954, life magazine published(刊登) a report about school children who could not read. The report said many children's books were not interesting. Doctor Seuss strongly hoped to help children and decided to write books that were interesting and easy to read. He used words with the same ending sound, like fish and wish. He did not receive training in art. Y et he drew the pictures for most of his books.In 1957, Dr. Seuss wrote The Cat in the Hat. He used less than 230 words to write the book and even a six-year-old kid should be able to read it. It was a fun story and easy to read. Children loved it. Their parents loved it, too. Today it is still one of the stories they like best. The success of The Cat in the Hat made him want to write more books for children. In 1960, he wrote a book using less than fifty words. The book is called Green Eggs and Ham.In 1984, Doctor Seuss won a Pulitzer Prize (普利策奖). He was honored for the education and enjoyment his books provided American children and their parents.He died at the age of 87, but his influence remains. Millions of his books have been sold worldwide. People say his books helped change the way American children learned to read. Yet, his books are loved by people of all ages. Doctor Seuss once said, “I do not write for children. I write for people.”1．People like his books because the books _______.A．are cheap and easy to getB．were written in different languagesC．are easy and interesting to readD．were written with in invented words2．Which of the following is TRUE according to the passage?A．Doctor Seuss wrote Green Eggs and Ham with over 230 words.B．Doctor Seuss wrote books only for children in the United States.C．The Cat in the Hat was written only for six-year-old children.D．His books provided education and enjoyment for Americans.3．From the text we know that Doctor Seuss _______.A．won a Pulitzer Prize soon after his deathB．sold millions of his books himself worldwide.C．changed American children’s way of readingD．wrote the largest number of books in the worldⅤ.书面表达19、根据要求完成提示性作文，并将答案写在答题卡的相应位置。
江苏省连云港新海中学2018-2019九年级上期中考试英语考试试题(无听力无答案)
新海实验中学教育集团2019-2020学年度第一学期期中考试九年级英语试题第一卷选择题（共95分）一、听力部分。
（共30分）略二、单项选择。
（本题共15小题；每小题1分，满分15分）从每题所给的A、B、C、D四个选项中选出最佳选项。
( ) 21. -In my opinion, Hello Mr. Billionaire(西虹市首富) is _______ unusual film.-I agree. It's both funny and meaningful. The leading role Wang Duoyu is _______ energetic man.A. an; aB. an; theC. a; anD. an; an( ) 22. Meghan Markle has been a hard-working woman _______ Prince Harry first met her in 2016.A. sinceB. forC. asD. because( ) 23.By _______ an online spoken English course, I find _______ much simpler to speak English.A take; itB taking; that C. taking; it D. take; this ( ) 24. Because of the swine fever(猪瘟), farmers _______ kill the pigs.A. has no choice butB. has no choice but toC. had no choice butD. had no choice but to( ) 25. Yuan Longping is _______, but he is still working hard every day. _______ hard work, he has made great achievements in the field of hybrid rice(杂交水稻)A. at his eighties; ThroughB. in his eighties; ThroughC. in his eighty; Though D at his eighty; Though( ) 26. There's no ticket left for Lang Lang’s piano concert. _______ you _______ your sister can go to it.A. Both; and B Not only; but also C Either; or D. Neither nor ( ) 27. -I doubt _______ you will arrive in Nanjing in time for the meeting.-I will send an e-mail to you as soon as I _______ there.A. if; will getB. whether; getC. that; gotD. that; has got( ) 28. _______ attending junior high, he worked as a volunteer in the Helping Hands Society. He didn't realize the importance of the organization _______ he visited a poor village in western China.A. While; whenB. When; untilC. While; untilD. When; while( ) 29. The Guide to Beijing(北京旅游指南) is of great _______ for tourists. They find itA. help; valueB. helpful; valuableC. helpful; valueD. help; valuable ( ) 30. As an outstanding writer, Moyan devotes all his life _______. His works are worth_______.A. to writing; to readB. writing; to readingC. to writing readingD. to write; reading( ) 31. Liyong, the famous TV host, _______ of cancer last month. His _______ is a great loss for audience(观众) who like him a lot.A. died; deadB. die; deathC. died; deathD. dead; death( ) 32. -It is said that young people now prefer _______ takeaways(外卖) to _______.-I would rather _______ by myself.A. ordering; to cook; to cookB. to order; to cook; cookC. ordering; cooking; cookD. to order; cooking; cooking( ) 33. _______, he has his X-box _______. He used to play it day and night.A. To our surprises; sellB. To our surprise; sellsC. To our surprises; soldD. To our surprise; sold( ) 34.-Could you tell me _______? -On October 5A. what story the film Lost, Foud(找到你) tells usB. what story the film Lost, Found told usC. when the film Lost, Found was shownD. when was the film Lost, Found shown( ) 35. -Thank you very much for helping me with the project. -_______. I'm glad to help.A. Never mindB. Don’ t mention it.C. It doesn't matter.D. All right.三、完形填空。
江苏省连云港市新海实验中学2019--2020学年度第二学期九年级数学第三次模拟测试(无答案)
江苏省连云港新海中学2019--2020学年度第二学期九年级数学第三次模拟测试一、选择题（每题3分，共24分）1. -2的倒数是（ ）A. 2B. 2C. 21D. -21 2.下列计算正确的是（ ）A. 32a a a =•B. 32a a a =+C. ()532a a = D. ()1132+=+a a a 3用科学计数法表示-0.0000062正确的是（ ） A. 6-102.6⨯ B.-6-102.6⨯ C.5-102.6⨯ D.5-102.6-⨯4.数轴上点A 、B 表示的数分别是a 、3，它们之间的距离可以表示为（ ） A.a+3 B. a-3 C. 3+a D. 3-a5.如图，AB 为⊙O 的直径，CD 是⊙O 的弦，∠ADC=35°，则∠CAB 的度数为（ ）A.35°B.45°C.55°D.65°6.《孙子算经》中有一道题，原文是:“今有木，不知长短，引绳度之，余绳四尺五寸;屈绳量之，不足一尺，木长几何?”意思是:用一根绳子去量一根长木，绳子还剩余4.5尺；将绳子对折再量长木，长木剩余1尺，问长木多少尺?如果设长木长x 尺、绳长y 尺，则可以列方程组是（ ） A. ⎪⎩⎪⎨⎧=-=-1215.4x y x y B.⎪⎩⎪⎨⎧=-=-1215.4x y y x C. ⎪⎩⎪⎨⎧=-=-1215.4y x y x D. ⎪⎩⎪⎨⎧=-=-1215.4y x x y 7.若二次函数y=bx x +2的图像的对称轴是经过点(2，0)且平行于y 轴的直线，则关于x 的 方程bx x +2=5的解为（ ）A. 1x =0，2x =4B. 1x =1，2x =5C. 1x =1，2x =-5D. 1x =-1，2x=58.如图，Rt △ABC 中，∠ACB-90°，AC=3，BC=4，将边AC 沿CE 翻折，使点A 落在AB 上的点D 处:再将边BC 沿CF 翻折，使点B 落在CD 的延长线上的点'B 处，两条折痕与斜边AB 分别交于点E 、F ，则线段'B F 的长为（ ） A. 53 B. 54 C. 32 D. 23二、填空题（每题3分，共24分）9. 分解因式：8-22x =____________________10.要使二次根式1-x 在实数范围内有意义，则实数x 的取值范围是___________ 11，若2a +a=1，则22a +2a-2018的值为______________12.如图，在△ABC 中，M 、N 分别在AB ，AC 上，且MN ∥BC ，若AM=2，BM=5，MN=2，则BC=________________。