青羊区初2015届第二次诊断性测试
成都市青羊区初2020届(2019~2020学年度下期)第二次诊断性测试题
青羊区初2020届第二次诊断性测试题九年级英语注意事项:1. 全卷分A卷和B卷, A卷满分100分, B卷满分50分; 考试时间120分钟.2. 答题前, 考生务必先认真核对条形码上的姓名、考号和座位号, 无误后将本人姓名、考号和座位号填写在答题卡相应位置.3. A卷主要为选择题(26-30小题除外), 用28铅笔在答题卡上填涂作答. A卷的26-30小题和B卷为非选择题, 用0.5毫米黑色墨水签字笔书写, 字体工整、笔迹清楚. 请按照题号在各题目对应的答题区域内作答, 超出答题区域书写的答案无效.4. 保持答题卡面清洁, 不得折叠、污染、破损等.A卷(共100分)注意事项:A卷共7页, 解答A卷时, 在每小题选出答案后, 用2B铅笔把答题卡对应题目的答案标号涂黑; 如需改动, 用橡皮擦干净后, 再选涂其他答案.第一部分听力测试(共30小题, 计30分)一、听句子, 根据所听到内容选择正确答语. 每小题读两遍。
(共5小题, 每小题1分; 计1. A. It tastes nice. B. OK. Here you are. C. No, thanks.2. A. How come? B. Sure, you can. C. No way!3. A. She is tall. B. She is outgoing. C. She likes dancing.4. A. I don't think so. B. Thank you. C. It’s not good.5. A. At the age of eight. B. With his uncle. C. In Malaysia.二、听句子, 选择与你所听到的句子意思相符合的图片, 并将代表图片的字母填在相应的题号后, 每小读两遍。
(共5小题, 每小题1分, 计5分)A B C D E6. 7. 8. 9. 10.三、听对话, 根据对话内容及问题选择正确答案。
2024年四川省成都市青羊区中考二模语文试题
2024年四川省成都市青羊区中考二模语文试题一、选择题1．下面加点字注音有误的一项是（）A．撺．掇（cuān）闭塞．（sè）抽丝剥．茧（bō）B．豢．养（huàn）舵．手（duò）兢．兢业业（jīng）C．娉．婷（pīng）盘桓．（huán）前仆．后继（pū）D．劫掠．（lüè）恐吓．（hè）铢两悉称．（chèng）2．下列语句中书写正确的一项是（）A．圆规显出很鄙夷的神色，仿佛痴笑法国人不知道拿破仑，美国人不知道华盛顿。
B．杜雍和现在只是要求它们不停顿地向前游去，不给它们一点觅食或嬉闹的可能。
C．我是干瘪的稻穗；是失修的路基；是淤滩上的泊船，把纤绳深深勒进你的肩膊。
D．这段话本从教育方面赞美无言，但要想明了无言的意韵，宜从美术观点去研究。
3．下列语段中加点的成语使用有误的一项是（）你知道吗？家喻户晓．．．．的诗作《清明》的作者可能不是杜牧。
据国家图书馆古籍研究员任昳霏介绍，从唐代到北宋，这首诗在杜牧的文集中都销声匿迹．．．．。
唐代文学学会会长陈尚君称，该诗可能是南宋民间诗人妙手偶得．．．．，后被一些编书的学者附会到杜牧名下，收录于《千家诗》。
文坛上诸如此类．．．．附会名家的现象还有很多，却并不影响这些诗作光耀千古。
A．家喻户晓B．销声匿迹C．妙手偶得D．诸如此类4．下列语段中没有语病的一句是（）①《典籍里的中国》通过时空对话的形式，讲述典籍在五千年历史长河中流转、源起的故事。
②节目捕捉典籍中的亮点，构建成深刻全面的文化传播、交流，对中华文明脉络进行梳理。
③节目通过影视化拍摄手法，对与典籍有关的故事进行可视化呈现。
④节目还深度开发新媒体平台，推动多种新形式产品，实现了大小屏联动的“叠加刷屏”效果。
A．①B．①C．①D．①二、文言文阅读阅读下面文言文，完成各题。
甲初，权谓吕蒙曰：“卿今当涂掌事，不可不学！”蒙辞．以军中多务。
成都市青羊区2018年中考英语二诊试题和答案
成都市青羊区2018年中考英语二诊试题和答案编辑整理：尊敬的读者朋友们：这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进行仔细校对，但是难免会有疏漏的地方，但是任然希望（成都市青羊区2018年中考英语二诊试题和答案）的内容能够给您的工作和学习带来便利。
同时也真诚的希望收到您的建议和反馈，这将是我们进步的源泉，前进的动力。
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青羊区2017届中考英语“二诊"试卷（满分：150分时间:120分钟）A卷（共100分）第一部分听力测试（共30小题，计30分）一、听句子，根据所听到的内容选择正确答案。
每小题念两遍。
(共5小题,每小题1分；计5分)（ )1. A. Yes， she is。
B. Yes， it is. C. Yes, I am.( )2. A。
In 2012。
B. Since two years ago.C。
For 3 years.（)3. A. It’s Monday.B。
It’s windy.C。
It’s April 18th.（ )4. A。
It’s my pleasure。
B. Congratulations。
C. Never mind.( )5。
A。
He has a toothache。
B. He is doing hishomework.C。
He has a smallbusiness.二、听句子，选择与内容相符的图片,并将代表图片的字母填在题号后横线上。
每小题念两遍。
（共5小题,每1分；计5分)6. 7。
8. 9. 10.三、听对话，根据对话内容及问题选择正确答案。
每小题念两遍。
(共10小题，每小题1分;计10分）（）11. A。
A cook。
B。
A teacher. C。
2023年四川省成都市青羊区中考二诊物理考试题(含答案)
青羊区初2023届诊断性测试九年级物理注意事项：1．全卷分A 卷和B 卷，A 卷满分100分，B 卷满分20分；全卷共120分；考试时间90分钟。
2．考生必须在答题卡上作答，答在试题卷、草稿纸上均无效。
3．在答题卡上作答时，考生需首先准确填写自己的姓名、考号、座位号。
A 卷的第I 卷和B 卷第一大题为选择题，用2B 铅笔准确填涂作答；A 卷的第II 卷和B 卷用0.5毫米黑色墨水签字笔书写，字体工整、笔迹清楚。
请按照题号在相应各题目对应的答题区域内作答，超出答题区域书写的答案无效。
4．保持答题卡面清洁，不得折叠、污染、破损等。
A 卷（共100分）第I 卷（选择题，共30分）一、单项选择题（每小题2分，共30分）1．下列对一台智能手机涉及的物理量的估测中，最接近实际的是（）A ．使用一周耗电约B ．电池电压C ．长度约为D ．质量约为2．无人驾驶汽车身上安装有大量的车载传感器，用于采集车内外各种复杂的环境信息，并加以处理，从而实现车辆的自动驾驶。
下列这些传感器中不是用来检测电磁波的是（）A ．激光雷达B ．超声波雷达C ．毫米波雷达D ．光学摄像头3．关于下列四个中国传统节日中的美食，说法正确的是（）A ．除夕节——煮饺子时，是通过做功改变了饺子的内能B ．元宵节——刚出锅的元宵很烫，因为其含有很多热量C ．端午节——粽叶飘香，说明分子不停地做无规则运动D ．中秋节——将月饼咬掉一大块，因为分子间具有斥力4．如图甲，在标准大气压下，将冰块放于易拉罐中并加入适量的盐，用筷子搅拌大约半分钟，用温度计测量罐中冰与盐水混合物的温度，可以看到温度计的示数低于0℃．这时观察易拉罐下部和底部，就会发现白霜，如图乙。
关于此现象分析正确的是（）A ．用筷子搅拌的目的是通过做功的方式去改变内能B ．冰与盐水的混合物在标准大气压下温度等于0℃C ．霜的形成过程中吸走了大量热量，罐体温度下降D ．霜的形成是由于空气中的水蒸气遇冷凝华所导致5．据消息，在2023年北斗三号系统将发射3颗备份卫星，让系统可靠性得到进一步增强。
2023年四川省成都市青羊区中考二模语文试题
2023年四川省成都市青羊区中考二模语文试题学校:___________姓名：___________班级：___________考号：___________一、选择题1．下面加点字注音有误的一项是（）A．应和．（hè）棱．镜（líng）浮光掠．影（1üè）B．校．对（jiào）筛．子（shāi）如坐针毡．（zhān）C．污秽．（huì）取缔．（dì）信手拈．来（niān）D．绢．本（juàn）绰．号（chuò）恹恹．．欲睡（yān）2．下列语句中书写正确的一项是（）A．这时候，雨已经化了装，它经常变成美丽的雪花，飘然莅临人间。
B．所有的孤雁都有一种共性：它们的飞行和鸣叫很频繁，而且声调忧郁。
C．它们在大海上飞蹿，想把自己对暴风雨的恐惧，掩藏到大海深处。
D．那索似有千军之力，扯住两岸石壁，谁也动弹不得，不是山倾，就是索崩。
3．下列语段中加点的成语使用有误的一项是（）从浣花溪到杜甫草堂，成都城西引众多文人雅士着墨吟咏，留下了不少妇孺皆知．．．．的名篇。
2004年，青羊老城面临发展空间受限、管理服务水平参差不齐．．．．等困境，青羊区政府妙手回春．．．．，在2006年底前将区行政中心西移，并借此东风打造新城。
各地投资者纷至沓来．．．．，青羊新城如今已发展为成都市的经济新高地。
A．妇孺皆知B．参差不齐C．妙手回春D．纷至沓来4．下列语句中没有语病的一项是（）A．由64岁的舞蹈家杨丽萍主演的舞剧版《孔雀》，无论从前期创作到现场演出，都受到了广大观众的高度好评。
B．虽然困难重重，这家国有企业仍然通过改革创新、转型升级实现了三年内扭亏为盈的目标，确实可说堪称不易。
C．近年来上海市老龄化速度加快，60周岁以上的老龄人口已占总人口的25%，老龄人口比例明显高于全国平均水平。
D．作为一名科幻爱好者，他非常喜欢刘慈欣的小说，曾反复阅读《三体》，一直被翻得破烂不堪，只好重新装订。
山东省实验中学2015届高三上学期第二次诊断性(期中)考试化学试题word版含答案
山东省实验中学2015届高三第二次诊断性考试化学试题第I卷(选择题共50分)一、选择题(本题包括10小题，每小题2分，共20分。
每小题只有一个选项．．．．．．符合题意) 1．化学与生活、社会密切相关。
下列说法错误的是A．二氧化氮能使织物褪色，对金属材料也有腐蚀作用B．亚硝酸盐属于食物防腐剂，可以适量地添加于食物中C．漂白粉在空气中能稳定存在，可用于漂白纸张D．大量燃烧化石燃料是造成雾霾天气的重要原因2．下列有关物质的性质和该性质的描述均正确的是A．Na2O2是碱性氧化物，只含离子键，能与CO2、H2O反应作供氧剂B．浓硫酸具有强氧化性，常温下可用铝罐盛装C．SO2与Cl2均具有漂白性，两者混合使用可以增强漂白效果D．硝酸具有酸性，可用硝酸与活泼金属反应制备氢气3．下列说法中错误的是A．少量液溴可用水封存，减少溴挥发B．浓硝酸用带橡胶塞的细口、棕色试剂瓶盛放C．实验室可以用浓氨水和生石灰制备NH3D．实验室中用加热方法分离碘和食盐的混合物4．下列叙述正确的是A．金属氧化物不一定是碱性氧化物 B．HC1、H2S、NH3都是电解质C．强酸强碱都是离子化合物D．FeBr3、FeCl2、CuS都不能直接用化合反应制备5．用N A代表阿伏加德罗常数的值，下列叙述正确的是A．11.2LCO和N2混合气体中含有的分子数是0.5N AB．在氯气参与的反应中，22.4L(标况)氯气完全反应得到的电子数一定为0.2N AC．1 mol SO2与足量O2在一定条件下反应生成SO3，共转移2N A个电子D．l L l mol·L1-的NaClO溶液中含有ClO-的数目小于N A6．下列说法正确的是A．阳离子只有氧化性，阴离子只有还原性B．失电子难的原子获得电子的能力一定强C．得到电子越多的氧化剂，其氧化性就越强D ．要实现Fe 2+→Fe 3+的转化，必须加入氧化剂7．在酸性溶液中，能够大量共存的离子组是A ．Na +、K +、MnO 4-、SO 24- B ．K +、NH 4+、NO 3-、I -C ．Mg 2+、K +、CO 23-、NO 3-D ．Fe 3+、Ag +、NO 3-、Cl -8．16O 和18O 是氧元素的两种核素，下列说法正确的是A ．16O 2与18O 2互为同分异构体B ．16O 与18O 核外电子排布方式不同C ．通过化学变化可以实现16O 与18O 间的相互转化D ．等质量的H 218O 和D 216O 含有的电子数相等9．下列性质和解释正确的是A ．某学生用pH 试纸测新制氯水的pH 值，先变红后褪色，是因为Cl 2有强氧化性B ．向氯水中加入碳酸氢钠粉末，有气泡产生，说明氯水中含有H +C ．向沸水中滴加氯化铁饱和溶液，得到红褐色液体，原理是：D ．将铜片放入浓硫酸中，无明显实验现象，说明铜在冷的浓硫酸中发生钝化10．下列实验过程中，始终无明显现象的是A ．在稀硫酸中加入铜粉，再加入KNO 3固体B ．SO 2通入Ba(NO 3)2溶液中C ．CO 2通入CaCl 2溶液中D ．稀盐酸滴加到Fe （OH ）3胶体溶液中二、选择题(本题包括10小题，每小题3分，共30分。
自贡高2015届二诊数学答案
1 1 3 f ( A) f ( ) sin( ) ………12 分 3 6 6 2 2
17（满分 12 分） （Ⅰ）设等差数列 an
的公差为 d ,由题知
an 2n 1 ……5 分
a1 d 2a1 1 解得a1 =1，d 2 ……3 分 4a1 6d 8a1 4d
…………12 分
1 2kx1 x2 3k ( x1 x2 ) 4k 4 x1 x2 2( x1 x2 ) 4
4k 2 12 8k 2 3 k 4k 2 2 1 4 k 3 4 k 3 4k 2 12 8k 2 4 2 4 4k 2 3 4k 2 3 3 3 所以 k k 为定值 . 4k 4 2k
PC (1, 2, 3), AC (2, 2,0) ………3 分
（Ⅰ）设 PC 和平面 ABCD 所成角的大小 则 sin cos( PC , OP)
P
3 6 ………6 分 4 3 8
A
二诊数学答案第 3 页 （共 6 页）
（Ⅱ） Tn
2n 2n (文科Tn n ） n 2 2
二诊数学答案第 1 页
（共 6 页）
n2 2n 1 2n 2 n 1 而cn b2 n 2 n 1 n 1 2 4 n 2时bn Tn Tn 1
……6 分
Rn
0 1 2 n 1 1 2 n 1 0 4 4 4 4 1 0 1 2 n 1 Rn 1 2 3 n 4 4 4 4 4
……8 分
1 1 1 1 n 1 Rn 2 n 1 n ……10 分 4 4 4 4 4 1 3n 1 化简得 Rn （4 n 1 ) ……12 分 9 4
成都市青白江区初2017级(2019~2020学年度下期)第二次诊断性试题 附答案及评分标准
青白江区初2017级“第二次诊断性”检测英语注意事项：1.全卷分A卷和B卷, A卷满分100分, B卷满分50分; 考试时间120分钟。
2.在作答时, 考生务必将自己的姓名、准考证号涂写在试卷和答题卡规定的地方。
3.选择题部分必须使用2B铅笔填涂; 非选择题部分必须使用0.5毫米黑色墨水签字笔书写, 字体工整、笔迹清楚。
4.请按照题号在答题卡上各题目对应的答题区域内作答, 超出答题区域书写的答案无效; 在草稿纸、试卷上答题无效。
5. 保持答题卡清洁, 不得折叠、污染、破损等。
A卷(共100分)第一部分听力测试(共30小题, 计30分)一、听句子,根据所听到的内容选择正确答语.每小题念两遍.(共5小题;每小题1分,计5分)1. A. Me, too. B. See you. C. You're welcome.2. A. Sorry, I won’t. B. No, I can't. C. Sounds good.3. A. Oh, I see. B. All right. C. Yes, it is.4. A. You're so kind. B. Yes, please. C. My pleasure.5. A. Yes, he is. B. Not really. C. He’s tall.二、听句子, 选择与所听句子内容相符的图片.每小题念两遍.(共5小题;每小题1分,计5分)A B C D E6. 7. 8. 9. 10.三、听对话,根据对话内容及问题选择正确答案.每小题念两遍.(共10小题;每小题1分,计10分)11. A. a climber. B. a gift. C. a movie.12. A. At home. B. In the hospital. C. At school.13. A. Play soccer. B. See the dentist. C. Finish the book.14.15. A. 18. B. 15. C. 14.16. A. Helen. B. Jack. C. Jenny.17. A. 15 minutes. B. 30 minutes. C. 45 minutes.18. A. By bus. B. By bike. C. On foot.19. A. To the nature museum. B. To the art museum. C. To the science museum.20. A. 30 dollars. B. 40 dollars. C. 60 dollars.四、听短文,根据短文内容选择正确答案.短文念两遍.(共5小题;每小题1分,计5分)21. When did Alfred arrive at the theater?A. At 6 pm.B. At 6:30 pm.C. At 7 pm.22. Why did none of Alfred,s friends answer his phone?A. They didn't hear his phone.B. Their phones were busy then.C. They wanted to give him a surprise.23. Where did they meet?A. Outside the theater.B. Inside the theater.C. At a gift store.24. How did Alfred feel when he saw his friends?A. Surprised.B. Upset.C. Happy.25. What made Alfred's birthday unforgettable?A. The action movie.B. The wonderful gifts.C. His friends’ unexpected acts.五、听短文,根据短文内容完成图表中所缺信息.短文念三遍.(共5小题;每小题1分,计5分)26. 27. 28. 29. 30.第二部分基础知识运用(共30小题,计40分)六、选择填空(共15小题,计20分)A. 从以下各题的A、B、C三个选项中选择正确答案.(共10小题;每小题1分,计10分)31. -- Who lives in apartment called Happy Time on Bridge Street in my class?-- Tom does.A.aB. anC. the32. The boy didn’t realize his mistake the teacher had a long talk with him.A. untilB. becauseC. after33. milk and cheese, we also need some vegetables and fruit for our salad.A. ExceptB. WithoutC. Besides34. The factory we'll visit next week is not far from here.A. whoB. whereC. which35. We need to a plan to tell all the students about our English Festival.A. look forward toB. come up withC. fall in love with36. Jack has just had lunch. He be hungry now.A. can'tB. mustn'tC. needn’t37. She really loves reading. Every year plenty of his pocket money in buyingbooks.A. will be spentB. was spentC. is spent38. An art show will be held in June in Chengdu Art Museum, but knows thedate for sure.A. NobodyB. everybodyC. somebody39. --Did you see Mr. Brown yesterday afternoon?-- No. When I got to school, he .A.leftB. had leftC. has left40. -- Miss Gao, can you tell me ?-- Yes, Just as President Xi says, “happiness is achieved through hard work.”A. how we can find happinessB. when we can find happinessC. who can help us find happinessB. 补全对话根据对话内容从方框中选择句子补全对话(共5小题; 每小題2分,计10分)A: Hello, Mary, you don't look well. What's up?B: Oh, I'm very busy and tired.A: 41B: We are going to have the graduation exam next week, but I'm not ready for it.A: 42 You have been studying hard, I know.B: But I'm still not sure of myself.A: 43 That will help you relax.B: That sounds good. 44A: And you should go to bed as usual and have a good sleep.B: 45七、完形填空. 阅读下面两篇短文,根据短文内容,从A、B、C三个选项中选出可以填入空白处的正确答案,(共15小题,计20分.A篇每小题2分,计10分;B篇每小题1分,计10分)AIn 20 years, I think I'll be a newspaper reporter. I will live in Shanghai, because there will be more jobs in that city. As a reporter, I think I will 46 lots of interesting people, so I'll have more friends. I will have 47 pets, though, because I'll have less free time. And my apartment will be no 48 for pets because it'll be too small. So I will probably just keep a bird. 49 the week, I'll wear smart clothes On the weekend, I'll look less smart 50 I'll be more comfortable. In the future, people will work more so they will probably have fewer vacations, but I think I'll take a holiday in Hon Kong when possible. One day I'll even go to Australia.46. A. invite B. meet C. thank47. A. fewer B. more C. better48. A. useful B. good C. harmful49. A. Before B. After C. During50. A. but B. so C. orBIt was last June. I entered a supermarket when a young man asked me, “Can you tell me where the milk counter(柜台)is?” “well, it's in the right corner;” I replied. Picking up my things, I came to the milk counter and saw the same man 51 almost 10 bottles of milk. I asked, “Do you need a trolley (手推车)?” “Sure, thank you. “he answered. I was 52 he was still picking and after a while his trolley had 24 bottles of milk. “Why so many bottles?” I asked, “Oh, these are for my street dogs. Today, I want to be a Santa for them.” He smiled. “Well. it's too 53 for you to be a Santa. It is still June.” I said. He 54 at me and walked a few steps, It seemed he wanted to say something but he left without a word. 55 , we met again at the bread counter. “So these bread and cakes are also for the street dogs, Mr. Santa.” He smiled. “Yes. These are also for them and I love to be Mr. Santa in, June. Santa is a symbol of surprises and 56 . He comes in December as we 57 him around Christmas. But in real life there is a Santa in each one of us that shines through our personality at some point of time, Maybe when you offered me a trolley, there was a 58 Santa in you. When we offer food to a hungry man or a(n) 59 to someone caught in the rain, we are being Santa there.”He left and I was happy that I had met him. Santa can come before Christmas. We just need to realize that he is around us by 60 happiness and unconditional love.51.A. putting B. choosing C. holding52.A. surprised B. excited C. sad53.A. easy B. early C. helpful54. A. turned B. laughed C. pointed55. A. Suddenly B. Luckily C. Hopefully56. A. love B. success C. friendship57. A. call B. show C. expect58. A. lost B. hidden C. forgotten59. A. camera B. umbrella C. apple60. A. storing B. increasing C. spreading第三部分阅读理解(共15小题; 计30分)八、阅读下面短文,根据短文内容判断句子的正误.正确的涂”A”, 错误的涂”B”.(共5小题; 每小题2分, 计10分)The Sydney Opera House is a very famous building inthe world. It has become Sydney's best-known landmarkand international symbol. The Opera House with a “sailingroof” was designed by a famous Danish architect(建筑师), Utzon. The base of the building was started in 1959, years before the designs were finished. Utzon spent four years designing the Opera House. In 1962, the designs were finalized(定稿)and the construction began In 1967, they started the decoration inside. It took 14 years in total to build the Opera House. Queen Elizabeth II officially opened it on October 20th, 1973.The Sydney Opera House cost around s100 million and was paid for by the public. 6, 225 square meters of glass was use to build it. The Opera House includes 1, 000 rooms. It is 185 meters wide. The building's roof sections weigh about 15 tons. Each year, this fantastic building attracts 200, 000 tourists to come for a visit or enjoy events in it.The Opera Louse reaches out into the harbor. It is amazing and unforgettable, offering people a strong sense of beaut.61. The designer of the Sydney Opera House was a famous Danish architect.62. Bunking the Opera House lasted from 1962-1973.63. The public donated money to build the Sydney Opera House.64.Tourists pay a visit to the Opera House only for its fantastic beauty.65.The passage is mainly about how the Sydney Opera House was built.九、阅读下面两篇短文,根据短文内容选择正确答案.(共10小题;每小题2分,计20分)AThe baby elephant, Sheila, was moved out of Belfast Zoo because of fears she might be hit by bombers(轰炸机) during the Belfast Blitz(闪电战)of 1941.She was one of the lucky ones. A lot of the animals were killed because of fears they might run away and attack people during the bombing. They included a tiger, a black bear, a wolf, and two polar bears.But Sheila was walked down the road by zoo-keepers to a nearby house where a woman took her in and kept her in her backyard for several months until the bombing was over.No one knows the woman's name and the zoo knows her only as “the elephant angel”. As the zoo celebrates its 75th birthday, people have decided to try to find the elephant's saver. Mark Challis is the manager of Belfast Zoo. He explained a bit more about Sheila's story.“Well, we know that Sheila spent some time living with a lady near to the zoo and we have one sweet photo, you can see it on our zoo website.”“In the photo you can see the elephant with the lady in her back garden and that's almost all we know. So we're just trying to find more information and we are not even sure if the lady is alive today, but maybe her relatives or somebody will recognize the back of that house and we can fill in details on this story.”Once the bombing was over, Sheila went back to the zoo and lived for another quarter of a century. She died of a skin disease in 1966.66. What happened to those unlucky animals in the zoo before the bombing?A. They were taken to a safe place.B. They started to attack people.C. They were killed.67. Which of the following is true according to Paragraph Three?A. The zoo-keepers walked the elephant to a nearby house.B A lady walked the elephant and kept her in the backyard.C. The elephant ran away and a lady found her finally.68. What information do people have about “the elephant angel”?A. She owned a zoo website.B. She used to live close to the zoo.C. She is still alive.69. Why was the photo posted on the website?A. To attract more visitors to the zoo.B. To celebrate the zoo's birthday.C. To find “the elephant angel”.70. What caused the elephant's death?A. A kind of illness.B. An accident.C. A bombing.BCalvin waited outside Trudy,'s bedroom. Then it happened--a scream, a very loud scream. Calvin ran to his room and threw himself into bed.He heard Mama coming down the hall.“Did you do this?” his mother asked. Calvin looked out from under the covers. His mother stood over him, holding a rubber spider.“Do what?” he asked.“You put that thing in my bed,” Trudy told him, stepping out from behind Mama.“Don't think that just because it's your birthday you can get away with something like this,” Mama scolded(责骂).“You do want your present, don't you?” That swept the smile off Calvin's face.“ Course I do,” he said.“Then you apologize(道歉).”Calvin dropped his head. “Sorry Trudy,” he muttered(嘟囔).“Here,” Mama said. “Happy birthday.” At the breakfast table she handed Calvin an envelope. Inside were tickets to the show of Lomax the Magnificent, the world-famous magician. “You've got two tickets there,” Mama said, “and I knowsomeone who'd really love to go along.” She smiled at Trudy.“You don't mean here, do you?” Calvin asked, eyeing his little sister.“Well, that would be really nice. But those tickets are yours. If you want to ask somebody—” Calvin didn’t wait for his mother to finish. He rushed out of the house to call Rodney, his pal next door, that the two of them were going to see Lomax the Magnificent.71. Who screamed at the beginning?A. Calvin.B. Calvin’s sister.C. Calvin's friend.72. Calvin apologized to Trudy .A. unwillinglyB. trulyC. happily73. Calvin received his present .A. in the dining roomB. in his bedC. inside the theatre74. Calvin's mother wanted Calvin to .A. ask his friend to the showB. find out what his friend thoughtC. do what she thought was right75. What is the best title for this passage?A. Trudy’s SpiderB. Mother’s TicketsC. Calvin’s BirthdayB卷(共50分)一、补全单词, 根据首字母及句意写出完整单词.(共5小题;每小题1分,计5分)1. The match is full of the u . We really don't know which team will win.2. It has not been rainy for long. We can see the b of the river now.3. Amy is an i to all who knows her. She built herself a house out of rubbish.4. We can’t a to upset such an important customer.5. Have you ever r talking back to your parents in a rude way?二、完成对话, 在空格中填上适当的单词,使对话完整正确,一空一词(含缩写词)(共10小题; 每小题1分,计10分)A: You look sad, Cindy!B: Yeah. We are at the end of our junior high school and it's time to say goodbye to everyone. I just feel sorry to be 1 from my friends and teachers.A: How time flies! Who would you most like to thank in the past three years?B: I'd like to thank 2 groups of people.A: I guess your friends must be one of them.B: Yes, sure! I've learnt the 3 of friendship.A: You must have had a wonderful time with your friends!B: Of course. We’ve worked hard and even faced some 4 times, but we’ve also had a lot of fun. 5 many of us will go to different new schools, our friendship will last forever without stop.A: I agree. A life without friends is like a day without sunshine. But friends don't have to see each other all the time. Sometimes the friends you treasure most are the friends you see least 6 . What about the second group?B: They are my parents. 7 a clean and comfortable environment at home for me where I feel both safe and relaxed, and where I can prepare myself for my school days.A: That's true. When we are 8 . they always cheer us up.B: Besides friends and parents, I thank all my teachers. I'll never forget their kindness and patience. They are so 9 that I believe there are no questions that they can't answer They go out of their way to make me study well and I've made a great progress this term.A: Me, too. I will forever thank teachers for supporting me to be a 10 self.三、短文填空, 从下面方框中选出10个单词,将其正确形式填入短文,使短文意思正确通顺(每词限用一次).(共10小题; 每小题1分,计10分)I felt a little bit worried when I woke up this morning. Too many 1 thingshappened and I needed to make many decisions. I decided to go to the park for a walk and try to relax.On the way, I kept repeating to 2 , “Don't stop being kind.” Others may have 3 situations than me. I already felt better when I was walking in the park and enjoying the beautiful trees and the smiles to and from 4 . I decided to go shopping on my way back.After paying, I sat down for a while and got a coffee. An elderly man sat next to me and started talking very 5 .I noticed that he had hearing aids in both ears. He had a coffee too. I tried talking with him but I realized he could not understand anything. I stayed anyway and he told me about his 6 with hearing, his son who worked in the age of 89! He felt happy to still be able to do the shopping on his own. He said he liked talking to people and he said sorry many times. I told him it was lovely 7 to him and after a while I said goodbye, 8 his hands and wished him a good day. He was so happy and 9 He thanked me many times and the last thing he said was “Thank you for 10 ”. I thought the whole point was “I just stayed and listened.”四、阅读表达(共10小题计10分)A. 补全短文根据短文内容,从短文后的A-F选项中,选出5个适当的选项补全短文.(共5小题;每小题1分,计5分)“Feel bored staying at home? So does the virus. 1 “This is how Zhang Wenhong advised people to stay indoors during the outbreak of COVID-19(新冠肺炎). As the head of the Shanghai expert team, Zhang has become an internet celebrity (名人) due to his funny and straightforward way of talking.He first caught people's attention in late January, when he asked the members of the Communist Party(共产党员) in his department to go to the front line hospitals. “When becoming Party members, we vowed(发誓) that we would always put people's interests first,” Zhang said. “This is the moment we live up to the vow. 2No bargaining(讨价还价).” His determination and the way of speaking quickly won praise across the country. 3 “I do it in person because I need to encourage other coworkers,” he told the media.Zhang believes in the traditional Chinese idea that “the best doctors prevent the disease.” That’s why he spares no efforts in spreading scientific knowledge on how to prevent the epidemic(流行病). 4 He and his team also update their WeChat account every day with timely analyses(分析)of the epidemic. One of his articles got more than 10 million hits. But Zhang might not care about his sudden fame. When asked about his feelings after becoming famous, Zhang told the media, “ 5 Pay attention to Wuhan. I'm not a celebrity. I'm a doctor.”B. 完成图表根据短文内容,完成图表中所缺信息.(共5小题; 每小题1分,计5分)Which animals are smart? Your answer may be dogs, monkeys or elephants. Now we can put one more animal into the list: sheep.Scientists from Cambridge University said that they can teach sheep to tell familiar(熟悉的)human faces from other unfamiliar ones.Before testing, scientists let the sheep take a look at pictures of four famous people, such as Barack Obama and British actress Emma Watson. Then the sheep went into a room with two computer screens. Each screen showed a human face. One screen showed a famous person and the other screen showed a common person. The sheep would always walk to the screen with the face of famous persons.Then, the scientists wanted to know the sheep's ability to recognize(认出) them from a photo. They put their own photos on screens along with some pictures of unfamiliar(不熟悉的) faces Not surprisingly, the sheep could tell the scientists from others.After noticing the animals’ ability to recognize people, scientists gave them a new job. They wanted to see the farm animals' ability to recognize the same person if the picture only showed half of the person's face or just one side of a person. The animals were still able to recognize them, though they were a little slower to recognize the pictures than before.The results show that the animals' face-recognition(面部识别)abilities are similar to those of monkeys and humans. Face recognition is a difficult job. But sheep have big brains(大脑). When they see other sheep, they can also recognize one another.The scientists said it might be interesting in the future to find out whether sheep can recognize different human facial expressions(表情).1. 2.3. 4.5.五、书面表达(计15分)假如你叫李华，今年由于新冠肺炎爆发，学校延迟开学，学生居家抗击疫情。
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青羊区初2015届第二次诊断性测试数学注意事项：1.全卷分A卷和B卷，A卷满分100分，B卷满分50分；考试时间120分钟。
2.答题前，考生务必先认真核对条形码上的姓名、学籍号和座位号，无误后将本人姓名、学籍号和座位号填写在答题卡相应位置。
3.第Ⅰ卷为选择题，用2B铅笔在答题卡上填涂作答；第Ⅱ卷为非选择题，用0.5毫米黑色墨水签字笔书写，字体工整、笔迹清楚。
请按照题号在各题目对应的答题区域内作答，超出答题区域书写的答案无效。
4.保持答题卡面清洁，不得折叠、污染、破损等。
A卷（共100分）第I卷（选择题，共30分）注意事项：第Ⅰ卷各题均有四个选项，只有一项符合题目要求。
每小题选出答案后，用2B铅笔把答题卡对应题目的答案标号涂黑；如需改动，用橡皮擦干净后，再选涂其他答案。
一、选择题。
（本大题共10个小题，每小题3分，共30分。
）1．如图，数轴上表示数﹣2的相反数的点是（▲）A．点N B．点MC．点Q D．点P2．下列运算正确的是（▲）A．2a2-a2= 2 B．a3+a3=a6C．(a3)2=a6D．a8÷a4=a23．如图，下面几何体的俯视图是（▲）A B C D4．为了“天更蓝”，植树节，人们纷纷响应“植树种绿”的号召，据统计，某市今年参加义务植树活动共有6930余人(次)，共计植树18300余株。
其中18300用科学计数法表示为（▲ ）A．3103.18⨯B．41083.1⨯C．510183.0⨯D．210183⨯正面初2015届二诊数学试题第1页（共6页）初2015届二诊数学试题 第2页（共6页）5．下列说法正确的是（ ▲ ）A ．任何数都有两个平方根B ．若b a b a ==则,22 .C ．24±=D ．-8的立方根是-26．已知43=b a ，则22aab a - 的值是（ ▲ ） A ．3B ．4C ．-4D ．-37．一次函数k kx y -=与反比例函数)0(≠=k xky 在同一个坐标系中的图象可能是（ ▲ ）A B C D8．一条排水管的截面如图所示．已知排水管的截面圆半径OB =5，截面圆圆心O 到水面的距离OC 是3，则水面宽AB 是( ▲ ) A ．3B ．4C ．6D ．89．在2015年的体育中考中，某校6名学生的体育成绩统计如图，则这组数据的众数、中位数分别是（ ）A ．3，2.5B ．47，46C ．47，47D ．50，4710．如果一个三角形两边的长分别等于一元二次方程066172=+-x x 的两个实数根，那么这个三角形的周长可能是（ ▲ ） A ．22B ．23C ．35D ．36第Ⅱ卷（非选择题，共70分）二、填空题：（每题4分，共16分）第8题图 第9题图45 47 50 分数初2015届二诊数学试题 第3页（共6页）11．分解因式：b b a 42-= ▲ ．12．有5张大小、背面都相同的卡片，正面上的数字分别是-2，-1，0，1，2，若将这5张卡片的背面朝上洗匀后，从中任意抽取1张，那么这张卡片正面上的数字为非负数的概率是 ▲ ．13．如图，线段AB 是⊙O 的直径，弦CD 丄AB ，∠DAB =70°，则∠COB 等于 ▲ 度．第13题图 第14题图14．如图，在矩形ABCD 中，AB =6，AD =8，P 是AD 上不与A 、D 重合的一动点，PE ⊥AC ，PF ⊥BD ，E 、F 分别为垂足，则PE +PF 的值为 ▲ ．三、计算下列各题（第15题每小题6分，第16题6分，共18分）15．（1）计算： 211230cos 4)1(2015-+-+-（2）解不等式组：⎪⎩⎪⎨⎧≤+-1332x x16．先化简，再求值)111(1222-++÷+--m m m m m m ，其中3=m ．四、解答题（17题8分，18题8分，共16分）17．如图，点A 表示一个半径为400米的森林公园的中心，在森林公园附近有B 、C 两个村庄，且∠B =45，∠C =37．如果在两村庄之间修一条长1000米的笔直公路将两村连通，那么该公路是否会穿过该森林公园？请说明理由．(参考数据：60.037sin ≈ ，80.037cos ≈ ，75.037tan ≈ )初2015届二诊数学试题 第4页（共6页）18．如图，已知反比例函数y=xm与一次函数y =kx +b 的图象相交于A （4，1）、B （a ，2）两点，一次函数的图象与x 轴、y 轴的交点分别为C 、E ．（1）求反比例函数和一次函数的解析式；（2）若点D 的坐标为（1，0），求△ABD 的面积．五、解答题（19题9分，20题11分，共20分）19．某同学报名参加校运动会，有以下5个项目可供选择： 径赛项目：100m ，200m ，400m （分别用A 1、A 2、A 3表示）； 田赛项目：跳远，跳高（分别用B 1、B 2表示）．（1）该同学从5个项目中任选一个，恰好是径赛项目的概率为 ▲ ；（2）该同学从5个项目中任选两个，利用树状图或表格列举出所有可能出现的结果，并求恰好有一个田赛项目和一个径赛项目的概率．20．如图，AB 是⊙O 的直径，点C 在半圆上从点A 运动到点B （点C 不与A 、B 重合），过点B 作⊙O 的切线，交AC 的平行线OD 于点D .连结CB 交OD 于点E ，连结CD ．已知：AB ＝10．（1）证明：无论点D 在何处，CD 总是⊙O 的切线；（2）若记AC =x ，OD =y ，请列出y 与x 的函数关系式，并写出自变量x 的取值范围；（3）试探索，当点C 运动到何处时，四边形CAOD 是平行四边形，请说明理由．并求出此时点E 运动的弧长．B 卷（共50分）一、填空题（每题4分，共20分）21．已知03522=++-+ab b a ，则b a -的值是 ▲ ．22．分式方程522=---xmx x 有增根，则m 的值是 ▲ ．初2015届二诊数学试题 第5页（共6页）23．如图，将一块实心三角板和实心半圆形量角器按图中方式叠放，三角板一直角边与量角器的零刻度线所在直线重合，斜边与半圆相切，重叠部分的量角器的弧对应的圆心角（∠AOB ）为120°，BC 的长为32，则三角板和量角器重叠部分的面积为 ▲ ．第23题图 第25题图 24．如图，已知反比例函数)0(>=k xky 的图像经过Rt △OAB 斜边OB 的中点D ，与直角边AB 相交于点C ．若△OBC 的面积为4，则k = ▲ ．25．如图，矩形ABCD 在平面直角坐标系的第一象限内，BC //x 轴，AB =1，BC =2，点B 的坐标为)1,2(，抛物线y =ax 2+bx +c (0≠a )的顶点总是在矩形ABCD 内部（包括边界），且与x 轴的两个交点分别是点Ｍ)0,(1x 、N )0,(2x ，其中121-≤≤-x ，下列说法：①abc <0；②02≤+b a ;③当k <1时，方程ax 2+bx +c -k =0总有两个不相等的实数根；④a 的取值范围是36192-≤≤-a ；其中正确的是 ▲ ． 二、（9分）26．某学习小组利用暑假中前40天参加社会实践活动，参与了一家网上书店的经营，了解到一种成本为20元/本的书在第x 天销售量p =50-x ，在第x 天的售价为y (元/本)，y 与x 的关系如图所示，已知当社会实践活动时间超过一半后，xy 31520+=． （1）请求出当201≤≤x 时，y 与x 的函数关系式，请问第几天此书的销售单价为35元/本？（2）这40天中该网店销售此书第几天获得的利润最大？最大的利润是多少？三、（10分）27．问题探究：(1)如图1，大正方形ABCD 与小正方形EFGH 的对称中心重合于点Ｏ，若E 、F 、G 、H 均在大正方形ABCD 的对角线上，连结EB 、FC ，容易发现EB ＝FC ，请你说明理由。
A OCB第24题图初2015届二诊数学试题 第6页（共6页）(2)如图2，若将小正方形EFGH 绕点O 旋转任意角度得到图2，猜想此时线段BE 与CF 的数量关系，并证明你的结论；(3) 如图3，若将(2)问中的大正方形ABCD 与小正方形EFGH 分别改为大菱形ABCD 与小菱形EFGH ，且∠ABC =∠FEH =60，其他条件不变，请问(2)问中的结论还成立吗？若成立，请说明理由，若不成立，请求出BE 与CF 之间的数量关系；若菱形的内角∠ABC =∠FEH =α，请直接写出BE 与CF 之间的数量关系（用含α的式子表示出来）．图1 图2图3四、（11分）28．如图，在平面直角坐标系中，点O 为坐标原点，直线y =kx +b 与x 轴交于点A ．过点A 的抛物线x x y 4212+-=与直线y =kx +b 交于另一点B ．且点B 的横坐标为2． （1）求直线y =kx +b 的解析式；（2）点P 是线段AB 上一动点(点P 不与点A 、B 重合)，过点P 作PM ∥OB 交第一象限内的抛物线于点M ，过点M 作MC ⊥x 轴于点C ，交AB 于点N ，过点P 作PF ⊥MC 于点F ．设PF 的长为t ，MN 的长为d ，求d 与t 之间的函数关系式(不要求写自变量t 的取值范围)； （3）在(2)的条件下，当S △ACN =S △PMN 时，连接ON ，点Q 在线段BP 上，过点Q 作QR ∥MN 交ON 于点R ，连接MQ 、BR ，当∠MQR =∠BRN +45°时，求点R 的坐标．青羊区初2015届第二次诊断性测试数学参考答案及评分标准卷（共100分）第I 卷（选择题，共30分）初2015届二诊数学试题 第7页（共6页）一、选择题。
（本大题共10个小题，每小题3分，共30分。
）1. D2. C3.C4.B5.D6.A7.B8.D9.C 10.B第Ⅱ卷（非选择题，共70分）二、填空题：（每题4分，共16分）11. b(a +2)(a -2)12.5313. 140 14.524 三、计算下列各题（第15题每小题6分，第16题6分，共18分）15. 解：（1）原式 =12322341-+-⨯+-……………………………（4分） =1232321-+-+-………………………………（5分） =22-……………………………………………………（6分） （2）解：由①得 -2x -3x <-4-1………………………………………… （1分） -5x <-5x >1………………………………………………（2分） 由②得：3x -2(x +3)≤6…………………………………………（3分） 3x -2x -6≤6……………………………………………（4分） x ≤12………………………………………… （5分） ∴原不等式组的解为1< x ≤12…………………………………（6分） 16.解：原式=⎥⎦⎤⎢⎣⎡-+--+÷--111)1)(1()1()1(2m m m m m m m ……………………………（2分） =11112-+-÷-m m m m ………………………………………………（3分） =211m m m m -⋅-……………………………………………………（4分） =m1………………………………………………………………（5分）当3=m 时，33311==m ……………………………………………（6分） 四、解答题（17题8分，18题8分，共16分）17. 解：过点A 作AH ⊥BC 于点H∵∠B=45°，∴Rt △AHB 中，AH=BH ………（1分） 设AH=x 米，则BH=x 米，HC=BC -BH=（1000-x ）米…（2分）初2015届二诊数学试题 第8页（共6页）在Rt △AHC 中，∵∠C=37°，∴tan C=HCAH……………………（3分） ∴xx-=︒100037tan ………………………………………………（4分）∵tan37°≈0.75，∴xx-=100075.0………………………………（5分）解得40074428>=x …………………………………………………（6分）∴AH>400……………………………………………………………（7分） ∴该公路不会穿过该森林公园…………………………………… （8分） 18. 解：（1）∵反比例函数xmy =经过A （4，1）、B （a ，2） ∴m=4，a =2………………………………………………………………………（2分） ∴B （2，2）又∵一次函数y=kx+b 经过A （4，1），B （2，2）∴⎩⎨⎧=+=+1422b k b k 解得⎪⎩⎪⎨⎧=-=321b k …………………………………………………（4分）∴一次函数的解析式为321+-=x y 反比例函数的解析式为xy 4=………………………………………………（5分）（2）由题意得E （6，0），过点B 作BH ⊥DE 于点H ，过A 作AG ⊥DE 于点G ∴S △ABD =S △BDE -S △DAE …………………………………………………………（6分）=AG DE BH DE ⋅⋅-⋅⋅2121=)(21AH BH DE -⋅⋅………………（7分） =)12(521-⨯⨯=25∴△ABD 的面积为25………………………………………………………（8分）五、解答题（19题9分，20题11分，共20分）19.解：（1） 53……………………………………………………………………（2分） （2）……（7分）初2015届二诊数学试题 第9页（共6页）恰好一个田赛项目和一个径赛项目的概率是532012=…………………………………（9分）20. （1）证明：在⊙O 中，∵OC=OA ，∴∠1=∠3 又∵CA//OD ，∴∠1=∠2，∠3=∠4 ∴∠2=∠4∴在△COD 与△BOD 中，⎪⎩⎪⎨⎧=∠=∠=OD OD OB OC 42∴△COD ≌△BOD （SAS ），∴∠OCD=∠OBD 又∵BD 是⊙O 的切线，∴∠OBD=90° ∠OCD=90° ∴CO ⊥CD∴无论点D 在何处，CD 总是半圆⊙O 的切线……………………………………（3分） （2）解：∵AB 是⊙O 的直径，点C 在⊙O 上，∴∠ACB=90°，∴∠ACB=∠OBD 又∵∠3=∠4∴△ACB ∽△OBD …………………………………………………………………（5分） ∴ODABOB AC =，∴y x 105= ∴xy 50=（0<x <10）……………………………………………………………（7分） （3）解：当点C 运动到的中点时，四边形CAOD 是平行四边形………（8分） 理由如下：∵C 为AB 的中点，∴CO ⊥AB ，∵AO=5，∴x =25初2015届二诊数学试题 第10页（共6页）由（2）252550==y ，∴x =y ……………………………………………………………………………（9分） ∵AC // OD ，∴四边形CAOD 是平行四边形即点C 运动到AB 的中点处时，四边形CAOD 是平行四边形……………（10分） 此时，点E 运动的弧长是π45…………………………………………………（11分）B 卷（共50分）一、填空题（每小题4分，共20分）21. 无实数解（注：得到11±不扣分） 22. -2 23.32316+π 24.3825. ①③④（答对一个给1分，答对两个给2分，答对三个给4分，若有错误答案给0分） 二、（9分）26. 解：（1）当1≤x ≤20时（x 为整数） 设y=kx+b （k ≠0）⎩⎨⎧=+=402030b k b 解得：⎪⎩⎪⎨⎧==3021b k∴3021+=x y ……………………………………………………………（2分） 当1≤x ≤20时，y =35，353021=+x ，x =10…………………………………………（4分） ∴第10天时，该书的销售单位为35元/本。