九月月考
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山西省晋城市2024-2025学年高三上学期9月月考英语试题一、阅读理解If you want free phone calls, here are some of the best free apps to meet your needs. XXchat XXchat is well known for its Text ing and picture sending capabilities, but you can also make free audio and video calls with your XXchat contacts. Enter the chat mode with one of your contacts by tapping the conversation once or opening a new chat window. Then, use the phone icon to instantly call them for free over Wi-Fi or your device’s data connection.Since you can only call other XXchat users, you can’t use the app to call home phones or devices that aren’t using the app. TelescopeTelescope is another extremely popular ape for encrypted (加密的) Text messaging and calls. It’s really easy to use, and the Text ing featured are available anywhere you log in (登录), whether on the web or through the desk top or mobile ape. A popular feature in this app is groups. You can have up to 200, 000 people in a single group! Sky worldSky world is a popular messaging service that works on desk top and mobile platforms. To create contacts required recipients to already have an account. It’s easy to create a Sky world account in Windows or other platforms. Not only is Internet calling supported, but also video calls and Text messages to any other users. It’s an easy-to-use ape that has proven itself worthy over the many years it’ been around. TextText is a mobile ape that can send and receive free phone calls from other users. You can also Text any phone because you’re given an actual number to use. To make phone calls to non-users, like land line phones. You need to buy or earn redeem able (可兑换的) credits.Since you only need an email address to set up your account, it works with device that might not have a phone number.1.What is a downside of XXchat?A.It is complex to operate.B.Its connection is limited.C.It needs two chat windows.D.It can only be used to Text.2.What does Telescope feature?A.Group calls.B.One-on-one talk,C.No log in needed.D.Universal accounts.3.Which ape allows users to earn credits?A.XXchat.B.Telescope.C.Sky world.D.Text.In Cedars, Pennsylvania, a cafe is giving disabled people with different abilities and their families a safe and inclusive space to shine. Created in 2022, the cafe was a response to the need in the community for programs that would enable youth with special needs to develop social and professional skills in a safe environment.The cafe was the idea of Pennsylvania mom Maureen Stanko, a teacher, fitness instructor, and musician, who was concerned about her son Nick, who has autism (孤独症) and food allergies, and what he would be able to do after graduation. In Pennsylvania, students with disabilities can stay in school until age 22, but worrying about Nick’s future is what keeps Stanko up at night.Stanko was so worried that she spoke to Nick’s therapist, Tyler Kammerle, who had dreamed about opening a restaurant to employ people with disabilities. The two worked together to make this a reality. Two years later, the So Much To Give Inclusive Cafe was born. It employed 63 people and 80 percent of them have some form of disability.The cafe is more than just a space to work; it’s also a place for people with disabilities and their families to dine. “We’d never even taken Nick to a restaurant before because we wouldn’t spend all this money to eat out to be completely stressed out,” Stanko said. “This cafe has taught Nick how to sit in a restaurant. And now we have a place to go, where if he stands up and starts hopping or clapping, nobody cares.”The inclusive cafe has made a real difference in people’s lives. One of the staff, Lauren Oppelts, who is hearing impaired, said, “If you told me two years ago that I would be a server, I wouldn’t believe you. But now I have gained so much self-confidence. A lot of employees here have changed so much; it’s just mind-blowing.”4.Why did Stanko and Tyler Kammerle establish the cafe?A.To serve people with various abilities.B.To provide a place for family occasions.C.To instruct graduates in professional skills.D.To offer employment to youth with special needs.5.What was Stanko’s concern about taking Nick to a restaurant?A.The cost of dining out.B.The noisy customers in restaurants.C.The lack of an inclusive environment.D.The food allergies Nick is suffering from.6.How has working at the cafe affected Lauren Oppelts?A.She has taken to socializing.B.She has grown more positive.C.She has become experienced in cooking.D.She has recovered from her hearing disability.7.Which of the following best describes Stanko?A.Caring and responsible.B.Ambitious and devoted.C.Determined and sensitive.D.Tough and reliable.An artificial intelligence (AI) tool of street view could be used to predict the risk of coronary heart disease — a condition where the heart’s arteries (动脉) are blocked, limiting blood flow to the heart by analysing neighbourhood environments, according to research.A study, published in the European Heart Journal, monitored everyday surroundings, including the quality of roads, buildings, and green spaces, and the role they play in determining heart health. Researchers were able to track the link between these environmental elements, including the presence or absence of pollution, and the risk of coronary heart disease. They found that these neighbourhood characteristics could account for 63% of the differences in heart disease risk from one community to another.The discovery stems from analysing more than half a million AI street view images across US cities, using computer vision to identify and interpret details that might go unnoticed by the human eye. The data provides urban planners and public health officials with information to design healthier living spaces and neighbourhoods.“Undoubtedly, there is a vast amount of social, economic and environmental data set,” said one of the study's authors, Prof Sanjay Rajagopalan. “However, there still remain significant gap s in our knowledge regarding unique environmental aspects of data that are currently beyond human comprehension. This is where the use of computer vision approaches may enable uniqueunderstanding of the physical and built environment.”By employing AI, researchers have been able to examine the details of neighbourhoods’ environment. The study employed computer vision technology, including applications used in medical imaging and autonomous driving, to identify details and then interpret them to make predictions or decisions.“We are getting to a place in human civilization where traditional approaches that have been used are rather limited and the use of AI to enhance human understanding is going to be critically important at solving complex problems,” Prof Rajagopalan said.8.What is the finding of the study?A.How people can prevent heart diseases.B.How environments affect heart health.C.How AI can reduce heart disease risks.D.How the heart's arteries are blocked. 9.What can the finding of the study help to do?A.Promote computer technology.B.Reduce air and water pollution.C.Design green neighbourhoods.D.Advertise for an AI company.10.Why was computer vision used in the study?A.The researchers had no environmental data.B.It had solved some environmentalproblems.C.People ignored the environment they live in.D.It helped people understand theenvironment.11.Which of the following is the best title for the text?A.The development of AI for hospitals B.The medical use of a street view toolC.The insight into healthy neighbourhoods D.The link between the heart and environmentForests have been embraced as a natural climate solution, due to their ability to soak up carbon dioxide from the atmosphere as they grow, locking it up in their trunks, branches, leaves, and roots. But a new study confirms widespread doubts about the potential for most forests in the Western US to help control climate change.Published in Earth’s Future, the paper analyzed trends in carbon storage across the American West from 2005 to 2019. Led by Jazlynn Hall, a forest and landscape ecologist at Cary Institute of Ecosystem Studies, the team found that throughout most of the region, climate changeand fires may be causing forests to store less carbon, not more.“There’s a growing trend to use forests as natural climate solutions,” said Hall. “Many climate mitigation (减轻) pathways rely in part on additional forest carbon storage to keep warming below 1.5℃ this century. We wanted to provide a baseline for how much carbon is currently stored in Western forests, how it’s changing, and how disturbances like fire and drought pose a threat to climate mitigation targets.”The authors warn that many Western forests could see a rapid acceleration of carbon loss in the coming years or decades. “These challenges have the potential to compromise carbon storage capacity and weaken our ability to mitigate climate change, Hah cautions.By providing a fire-new view of threats at landscape and regional levels, Hall and colleagues provide a framework (框架) that could help forest managers adapt site-specific strategies to strengthen forest resilience (复原力). They also identify the remaining areas with the lowest risk and highest potential to store carbon, such as the Pacific Northwest.“Our study develops new methods to carefully estimate forest-carbon storage at a regional level, track it over time, and find out the causes of changes over time,” said Hall. He expects the methods will be useful in monitoring carbon storage levels going forward, as well as assessing the carbon impacts of management efforts such as forest thinning and planned burning.12.What does the underlined phrase “soak up” in paragraph 1 mean?A.Put down.B.Take in.C.Bring up.D.Give out. 13.Why was the study conducted?A.To find the best forests for carbon storage.B.To promote forests’ carbon storage capacity.C.To assess the current situation of forests.D.To measure the carbon released into forests. 14.What can we say about the future trend of Western forests?A.Carbon loss will speed up.B.They will become more resilient.C.They will store more carbon.D.They will have no impact on climate. 15.What is the primary function of Hall’s framework for forest management?A.Predicting future forest growth rates.B.Identifying high- risk areas for protection.C.Mapping all the forests in the Western US.D.Helping managers adapt strategies to forests.I am often struck by the thought that there is this huge life enhancing potential available to everyone on the planet that maybe we don’t always take great advantage of. 16 Through it, we help ourselves and others by sharing the things we have learned.17 I have been teaching and preaching from the time when it occurred to me that I had some really great stuff to share. But, strangely, it took me a long time to really identify what it was that I was doing, at least enough to put it into words.So, I’d like to share with you my thoughts on why teaching and sharing your knowledge can be so important to you as well as to the people around you. 18 See whether it profoundly enhanced so many parts of your life, even in the areas you’re already super successful in.Here is what makes teaching so great for the person doing the teaching. Any goal, habit, human quality, or desire that you start preaching, teaching, or pontificating about will automatically, and almost without effort, push you to do more of it yourself. 19 It pushes you to do what you are encouraging and teaching others to do. I am totally convinced this will, and does, work that way for everyone.What knowledge do you have, or have you learned that you want to be reminded and pushed to improve in your life? If you want to do better at it, there will be plenty of others that will want to do better at it too. 20A.It’s our ability to teach other people.B.We just need to talk and teach others about it.C.Doing this has been changing and helping my life for years now.D.Please, think deeply about this and then put it into practice in any way you can.E.Be sure to write down your goals and objectives as well so you can stay on track.F.The knowledge you share, whether spoken or written, is like a truth drug for the mind. G.So, why not teach and share what you know and help yourself do better and better at these things?二、完形填空Five years ago, Anna Lee, a cultural worker from Washington, D.C., bought a vase for $3.99 at a thrifty shop. She felt the vase was 21 to Mexico, a country she focuses on, and liked keeping it as a 22 .In January, Anna Lee 23 a business trip to Mexico. While at the National Museum of Anthropology in Mexico City, she was surprised to find vases that 24 resembled (像) the one she had bought for less than $4. Struck by the 25 , she sought advice from a 26 worker on handling artifacts from that era.Unsure they were 27 Mayan (玛雅人的) artifacts, she discussed them with someone in the museum officer. Upon returning home, Anna Lee 28 the Mexican Embassy, sending them photos and measurements of the vase. Embassy anthropologists verified (证实) it as a nearly 2, 000-year-old ceremonial urn (瓮) from the 29 Mayan civilization.Having known the 30 about the artifact, Anna decided to help 31 the artifact to its country. She safely transported the vase to the embassy, where Mexico’s Ambassador to the US eagerly waited to 32 it back to Mexico.Anna emphasized that returning the vase to Mexico held greater personal 33 than any potential financial gain. She stated that giving it back felt more fulfilling than 34 it for a significant sum. “It’s really important to recognize that some of these things, especially with such historical and 35 value to an entire country and people — you can’t really put a number on that,” she said.21.A.attached B.connected C.engaged D.exposed 22.A.partner B.style C.case D.reminder 23.A.went on B.got around C.set in D.picked up 24.A.merely B.properly C.closely D.rarely 25.A.generality B.popularity C.reality D.similarity 26.A.museum B.library C.transport D.campus 27.A.worthy B.authentic C.suitable D.advanced 28.A.invited B.admired C.witnessed D.contacted 29.A.unique B.powerful C.ancient D.independent 30.A.truth B.opinion C.event D.reason31.A.show B.address C.sell D.return 32.A.throw B.send C.hide D.relate 33.A.clue B.interest C.value D.dream 34.A.selling B.keeping C.enjoying D.sewing 35.A.legal B.traditional C.digital D.cultural三、语法填空阅读下面短文, 在空白处填入1 个适当的单词或括号内单词的正确形式.CGTN, Updated20: 58, 01- May -2024, WednesdayChina’s Chang’e-6 lunar probe(探测器) is ready to be launched in two days after it completed a final systematic joint rehearsal (预演) on Wednesday. Different departments, 36 included the Wenchang Spacecraft Launch Site in Hainan Province, the Beijing Aerospace Control Center, the Xi’an Satellite Control Center, and the Yuanwang space-tracking ship, 37 (participate) in the rehearsal.The flight is scheduled for launch on May 3, according to the China National Space Administration (CNSA) on Wednesday. The rehearsal was conducted 38 (ensure) smooth cooperation between the different organizations during the launch of the probe.A Long March 5 carrier rocket, with the 8.2- metric-tonne Chang’e 6probe on top, 39 (move) on Saturday morning to its launch tower at the Wenchang Space Launch Center. Before Wednesday’s rehearsal, the launch site had already organized and completed a series of tests, including 40 (fuel) the rocket.The launch site also organized 41 pre-launch meteorological (气象学的) consultation for the mission as Wenchang is transitioning iron a dry to a rainy season. The meteorological system also has initiated stimulation exercises 42 advance and has strengthened the monitoring of data 43 (associate) with thunderstorms and heavy rain in the launch site area and its surroundings lately.44 (additional), they are closely monitoring small changes in the shallow wind field around important buildings in 45 (prepare) for the coming launch on May 3.四、书信写作46.假定你是李华,上周六,你参加了校书法比赛。
山西省晋城市2024-2025学年高三上学期9月月考语文试题考生注意:1.本试卷共150分,考试时间150分钟。
2.请将各题答案填写在答题卡上。
3.本试卷主要考试内容:高考全部内容。
一、现代文阅读(35分)(一)现代文阅读I(本题共5小题,19分)阅读下面的文字,完成1~5题。
材料一:随着西方艺术史研究的不断深入,大量理论、研究方法被引入国内,对中国艺术史研究的发展产生了一系列深刻的影响。
一方面,中国艺术史研究借鉴西方经验,引入了许多研究方法和理论,如社会历史学、文化研究、后现代主义等,这些方法和理论帮助中国艺术史研究者更好地分析和解读艺术作品,关注艺术与社会、文化、政治等方面的关系,研究领域不断扩大。
受新艺术史研究的影响,中国艺术史研究者开始关注非传统的艺术领域,如民间艺术、当代艺术、女性艺术等,这种拓展使中国艺术史的研究更加多元化和综合化,进一步丰富了中国艺术史的研究内容。
例如,在分析绘画中的女性形象时,研究者会更多地结合作品的历史背景和女性心理学,分析作品的精神内涵,尝试解释其中的历史、文化、政治因素,而不是仅仅停留在笔触、品质等层面,这显示出我国美术史研究发生的深刻变化。
另一方面,艺术史研究的对象范围逐渐扩大,现代中国艺术史研究的视野早已不再局限于研究内部艺术变化,如风格、样式、语言、技法,而是扩展外向型研究;艺术史的研究方法也不再局限于本学科的理论方法,而是选择跨学科的方法和理论体系,如符号学、社会学、心理学等。
受西方艺术史研究的影响,中国艺术史研究者与国际学术界进行了更加广泛的交流,这种跨文化的对话促进了不同文化间的艺术交流和相互借鉴,拓宽了中国艺术史研究的视野,促使中国艺术史研究者对传统的艺术史观念和叙述进行批判和反思,推动了中国艺术史研究的发展。
总之,西方艺术史研究包括新艺术史研究,对中国艺术领域产生了广泛而深远的影响。
它为中国艺术史研究提供了新的研究方法和理论,拓展了研究领域,激发了中国艺术史研究者的理论创新和批判精神,使中国艺术史研究更加多元化、综合化和国际化。
绵阳南山中学2024-2025学年高三9月月考地理试题注意事项:1.答题前,考生务必将自己的学校、班级、姓名用0.5毫米黑色签字笔填写清楚,同时用2B铅笔将考号准确填涂在“考号”栏目内。
2.选择题使用2B铅笔填涂在答题卡对应题目标号的位置上,如需改动,用橡皮擦擦干净后再选涂其它答案;非选择题用0.5毫米黑色签字笔书写在答题卡的对应框内,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。
第Ⅰ卷(选择题,每题3分,共48分)近年来,我国多地积极实施“小田变大田”土地综合整治工作,将“一户多块地”改造为“一户一块地”,并通过土地流转,促进土地向种粮大户集中。
完成1-2小题。
1.“小田变大田”土地整治的主要原因是()A.耕地流转费用上涨B.劳动力成本上升C.饮食消费结构升级D.耕地分布不平衡2.该项土地整治可以()A.增加农业经营主体数量B.提高农业生产多样化水平C.缓解耕地非粮化的倾向D.减少农村劳动力流出数量服务业碳强度即服务业单位国内生产总值的二氧化碳排放量,它是衡量区域服务业减排绩效的重要指标。
下图为四省市服务业碳强度变化图。
完成3-4小题。
3.关于四省市服务业碳强度变化的描述,正确的是()A.2005-2019年河南持续上升B.2005-2019年浙江持续下降C.2005-2012年贵州增幅最大D.2012-2019年上海降幅最大4.上海降低服务业碳强度,可()①利用清洁能源,改善能源消费结构②加强城市绿化,扩大绿地面积③加快金融业发展,优化服务业结构④外迁服务业,使其向郊区扩散A.①②B.③④C.①③D.②④某月16日夜间,我国沿海某地开始出现大雾天气。
本次大雾的形成主要源于海洋上的一股冷气流输送。
通常情况下,日出之后大雾会逐渐减弱,而17日日出之后,该地大雾天气加重。
下图示意该地此月份16日17时—17日5时的天气状况。
据此完成5-7小题。
5.据图推测,陆地大致位于海洋的()A.偏西侧B.偏东侧C.偏南侧D.偏北侧6.16日20时—17日5时,该地所处的气压场的特点是()A.南高北低,梯度大B.东高西低,梯度小C.北高南低,梯度大D.西高东低,梯度小7.17日日出之后,陆地大雾天气加重,可能是因为()A.空气对流加强B.海风输送水汽增加C.地表温度上升D.海面蒸发强度变小2024年6月9-15日,形成于西北的气团持续向东移动,并受强大稳定的大陆暖高压脊控制,以冀、鲁、豫为中心的高温地区迅速发展并波及京、津等地。
德强高中2024-2025学年度上学期九月月考高一学年 物理试题答题时间:90分钟 满分:100分一、单选题(每题3分,共30分)1.关于物体的运动,下列说法中正确的是( )A .甲图中老鹰飞得比较高,可以看成质点B .乙图中导航显示的是位移大小C .丙图中篮球比赛计时牌,图中为时刻D .丁图中雷达测速仪测得的是汽车的瞬时速率2.小华绕着周长为400米的运动场,跑了一圈,又回到了起始位置,总共用时1分20秒,下列说法正确的是( )A .小华运动的位移为400米B .小华运动的路程为零C .小华的平均速度为D .小华运动的平均速率为3.关于运动物体的速度和加速度的关系,下列说法中正确的是( )A .速度变化越快,其加速度一定越大B .速度变化量越大,其加速度一定越大C .速度为零,其加速度也一定为零D .速度减小时,其加速度也一定减小4.如图“30TFSI”为某品牌汽车的尾部标识,其中“30”称为G 值,G 值越大,加速越快。
G 值的大小为车辆从静止加速到100km/h (百公里加速)的平均加速度的10倍。
由此推算,该车百公里加速时间约为( )A .3.3sB .9.3sC .12.0sD .33.3s1574km 24s 5m /s5m /s5.已知某物体做直线运动的速度—时间图像如图所示,设向右为正方向。
关于物体的运动情况,下列说法正确的是( )A .3s 末至6s 末物体静止B .0至3s 末向右做匀加速直线运动,6s 末至7s 末向左做匀减速直线运动C .0至3s 内位移大小为12mD .第7s 内加速度大小为2m/s 26.如图所示的x-t 图像和v -t 图像中,四条图线分别表示甲、乙、丙、丁四辆车由同一地点向同一方向运动的情况,下列说法正确的是( )A .在6s 末,甲乙两车位于同一位置,丁车位于丙车的前方B .0~6s 内,丙、丁两车的平均速度相等C .0~6s 内,丙车的加速度始终大于丁车的加速度D .0~6s 内,甲车通过的路程大于乙车通过的路程7.一辆汽车以20m/s 的速度做匀速直线运动,刹车时获得的加速度大小为,则刹车后2s 内与刹车后5s 内汽车通过的位移之比是( )A .B .C .D .8.某次列车出站时做匀加速运动,途中连续经过三个测试点A 、B 、C ,已知AB 段距离为BC 段的一半,AB 段平均速度为72km/h ,BC 段平均速度为144km/h ,如图所示,则列车经过C 点时速度大小为( )A .30m/sB .40m/sC .50m/sD .60m/s9.加速度的定义式为,历史上有些科学家曾把相等位移内速度变化相等的单向直线运动称为“匀变速直线运动”(现称“另类匀变速直线运动”),“另类加速度”的定义式为,其中和分别表示某段位移内的初速度和末速度。
荆州2024~2025学年高一上学期九月月考语文试题(答案在最后)(全卷满分150分考试用时150分钟)一、基础题(本题共8小题,16分)1.下列句子中,解释不正确的一项是()A.何时可掇掇:拾取,摘取。
一说同“辍”,停止B.枉用相存存:问候C.对酒当歌当:应当D.去日苦多去:逝去的【答案】C【解析】【详解】本题考查学生理解文言实词在文中意义的能力。
C.当:对着。
句意:面对着美酒高声放歌。
故选C。
2.下列各句划横线词语解释错误的一项是()A.少无适俗韵,性本爱丘山。
韵:气质,情致B.开荒南野际,守拙归园田。
守拙:持守愚拙的本性C.暧暧远人村,依依墟里烟。
暧暧:迷蒙隐约的样子D.榆柳荫后檐,桃李罗堂前。
荫:树阴【答案】D【解析】【详解】本题考查学生理解文言实词在文中意义的能力。
A.正确。
句意:从小没有适应世俗的情趣,生性本来喜欢山川田园。
B.正确。
句意:南面的山野里开垦荒地,安守本分归居园田。
C.正确。
句意:隐隐可见远处的村庄,乡里的炊烟缓缓地飘荡。
D.错误,荫:遮蔽。
句意:榆树柳树遮蔽着后檐,桃树李树排列堂前。
故选D。
3.下列诗句中,加点词的意思解释有误的一项是()A.熊咆龙吟殷.岩泉(震动)B.水澹澹..兮生烟(水波荡漾的样子)C.虎鼓瑟兮鸾回.车(使……回转)D.越陌.度阡(南北向的田间小路)【答案】D【解析】【详解】本题考查学生理解文言实词在文中的意义和用法的能力。
A.正确。
句意:熊在怒吼,龙在长鸣,岩中的泉水在震响。
B.正确。
句意:水波动荡升起了烟雾。
C.正确。
句意:老虎弹奏着琴瑟,鸾鸟驾着车D.错误。
陌:东西向的田间小路;阡:南北向的田间小路。
句意:穿过纵横交错的小路故选D。
4.下列各句中,加点的词语古今意义相同的一项是()A.明明..如月,何时可掇B.复得返自然..C.慨当以慷,忧思..难忘D.对酒当歌,人生几何..【答案】C【解析】【分析】【详解】本题考查理解文言实词中古今异义词的能力。
安徽省池州市2024-2025学年九年级上学期九月月考数学试题(沪科版)一、单选题1.下列函数是二次函数的是( )A .25y x =+B .21y x x =+C .2321y x x =+-D .2(1)y x x x =-+2.已知点P (a ,m ),Q (b ,n )都在反比例函数y=2x-的图象上,且a <0<b ,则下列结论一定正确的是( )A .m+n <0B .m+n >0C .m <nD .m >n 3.已知二次函数y =ax 2+bx +c ,当x =1时,有最大值8,其图象的形状、开口方向与抛物线y =-2x 2相同,则这个二次函数的表达式是( )A .y =-2x 2-x +3B .y =-2x 2+4C .y =-2x 2+4x +8D .y =-2x 2+4x +64.二次函数y =ax 2+bx +c (a ≠0)的图象如图所示,下列结论:①b 2﹣4ac >0;②abc <0;③4a +b =0;④4a ﹣2b +c >0.其中正确结论的个数是( )A .4B .3C .2D .15.已知两点12A(5,y ),B(3,y )-均在抛物线2(0)y ax bx c a =++≠上,点00C(x ,y )是该抛物线的顶点,若120y y y >≥,则x 0的取值范围是( )A .0x 5>-B .0x 1>-C .05x 1-<<-D .02x 3-<<6.二次函数()220y ax ax c a =-+>的图象过1234()()3,,1,,2(),,)4,(A y B y C y D y --四个点,下列说法一定正确的是( )A .若120y y >,则340y y >B .若140y y >,则230y y >C .若240y y <,则130y y <D .若340y y <,则120y y <7.某公园草坪的防护栏由100段形状相同的抛物线形构件组成,为了牢固起见,每段护栏需要间距0.4m 加设一根不锈钢的支柱,防护栏的最高点距底部0.5m (如图),则这条防护栏需要不锈钢支柱的总长度至少为( )A .50mB .100mC .160mD .200m8.如图,在平面直角坐标系中,矩形ABCD 的顶点A ,B 在x 轴的正半轴上,反比例函数(0,0)k y k x x=>>的图象经过顶点D ,分别与对角线AC ,边BC 交于点E ,F ,连接EF ,AF .若点E 为AC 的中点,AEF △的面积为1,则k 的值为( )A .125B .32C .2D .39.已知二次函数222(2)1y x b x b =--+-的图象不经过第三象限,则实数b 的取值范围是( ).A .54b ≥B .1b ≥或1b ≤-C .2b ≥D .12b ≤≤10.如图,在正方形ABCD 中,AB =4,动点M 从点A 出发,以每秒1个单位长度的速度沿射线AB 运动,同时动点N 从点A 出发,以每秒2个单位长度的速度沿折线AD →DC →CB 运动,当点N 运动到点B 时,点M ,N 同时停止运动.设V AMN 的面积为y ,运动时间为x (s ),则下列图象能大致反映y 与x 之间函数关系的是( )A .B .C .D .二、填空题11.二次函数()()2()y x a x b a b =---<与x 轴的两个交点的横坐标分别为m 和n ,且m n <,则a ,b ,m ,n 四个数的大小关系是(用<号连接)12.如图,Rt △ABC 的两个锐角顶点A ,B 在函数y =k x(x >0)的图象上,AC ∥x 轴,AC =2,若点A 的坐标为(2,2),则点B 的坐标为.13.如图,一块矩形土地ABCD 由篱笆围着,并且由一条与CD 边平行的篱笆EF 分开.已知篱笆的总长为900m (篱笆的厚度忽略不计),当AB=m 时,矩形土地ABCD 的面积最大.14.如图,抛物线2286y x x =-+-与x 轴交于点A 、B ,把抛物线在x 轴及其上方的部分记作1C ,将1C 向右平移得2C ,2C 与x 轴交于点B ,D ,若直线y x m =+与1C ,2C 共有3个不同的交点,请你探究:(1)2C 对应的函数表达式为;(2)m 的取值范围是.三、解答题15.已知二次函数22y x x m =-+-(m 是常数).(1)若该函数的图象与x 轴有两个不同的交点,求m 的取值范围.(2)若该二次函数的图象与x 轴的其中一个交点坐标为()1,0-,求一元二次方程220x x m -+-=的解.16.已知反比例函数k y x=的图象经过点M(2,1). (1)求该函数的表达式;(2)当2<x<4时,求y 的取值范围(直接写出结果).17.把抛物线()2y a x h k =++先向左平移2个单位长度,再向上平移4个单位长度,得到抛物线()21112y x =+-. (1)试确定,,a h k 的值;(2)作原抛物线关于x 轴对称的图形,求所得抛物线的函数表达式.18.某果园有100棵橙子树,平均每棵树结600个橙子,现准备多种一些橙子树以提高果园产量,但是如果多种树,那么树之间的距离和每一棵树所接受的阳光就会减少.根据经验估计,每多种一棵树,平均每棵树就会少结5个橙子,假设果园多种了x 棵橙子树. (1)直接写出平均每棵树结的橙子个数y (个)与x 之间的关系;(2)果园多种多少棵橙子树时,可使橙子的总产量最大?最大为多少个?19.已知顶点为()2,1A -的抛物线经过点B 0,3 ,与x 轴交于C ,D 两点(点C 在点D 的左侧).(1)求抛物线对应的函数表达式;(2)连接AB BD DA ,,,求ABD △的面积.20.如图,在平面直角坐标系中,Y OABC 的顶点A, C 的坐标分别为A(2,0),C(-1,2),反比例函数()k y=k 0x≠的图像经过点B .(1)求k 的值.(2)将Y OABC 沿着x 轴翻折,点C 落在点C′处.判断点C′是否在反比例函数()k y=k 0x≠的图像上,请通过计算说明理由.21.如图,在平面直角坐标系中,抛物线2y ax bx =+经过(2,4)A --,(2,0)B .(1)求抛物线2y ax bx =+的解析式.(2)若点M 是该抛物线对称轴上的一点,求AM OM +的最小值.22.某公司开发一款与教育配套的软件,年初上市后,经历了从亏损到盈利的过程,变化过程可用如图所示的抛物线描述,它刻画了该软件上市以来累积利润S (万元)与销售时间t (月)之间的函数关系(即前t 个月的利润总和S 与t 之间的函数关系),根据图象提供的信息,解答下列问题:(1)此软件上市第几个月后开始盈利?(2)求累积利润S (万元)与销售时间t (月)间的函数表达式;(3)第几个月公司的月利润为2.5万元?23.如图,两条抛物线214y x =-+,2215y x bx c =-++相交于A ,B 两点,点A 在x 轴负半轴上,且为抛物线2y 的最高点.(1)求抛物线2y 的解析式和点B 的坐标;(2)点C 是抛物线1y 上A ,B 之间的一点,过点C 作x 轴的垂线交2y 于点D ,当线段CD 取最大值时,求BCD S △.。
吉林省长春市朝阳区长春外国语学校2024-2025学年高一上学期9月月考物理试题一、单选题1.智能手机上装载的众多app软件改变着我们的生活。
如图所示为某软件的一张截图,表示了某次导航的具体路径,其推荐路线中有两个数据,10分钟,5.4公里,下列说法正确的是()A.10分钟表示的是某个时刻B.研究汽车在导航图中的位置时,可以把汽车看作质点C.5.4公里表示了此次行程的位移的大小D.根据这两个数据,我们可以算出此次行程的平均速度的大小2.如图“30TFSI”为某品牌汽车的尾部标识,其中“30”称为G值,G值越大,加速越快。
G 值的大小为车辆从静止加速到100km/h(百公里加速)的平均加速度的10倍。
由此推算,该车百公里加速时间约为()A.3.3s B.9.3s C.12.0s D.33.3s3.电梯上升过程中,某同学用智能手机记录了电梯速度和时间变化的关系,如图所示,下列表述正确的是()A .只有从20.0s 到30.0s ,电梯才处于上升阶段B .从30.0s 到40.0s ,电梯处于静止阶段C .从20.0s 到50.0s ,电梯都处于上升阶段D .只有从40.0s 到50.0s ,电梯才处于下降阶段4.A 、B 两个小球在空中某处,现同时以10m/s 的速率抛出,A 竖直上抛,B 竖直下抛,不计空气阻力,g 取10m/s 2,则以下说法正确的是 ( )A .它们在运动过程中的平均速度相等B .当它们落地时,A 在空中运动的位移大C .它们落地时间相差4sD .它们都在空中运动时,每秒钟它们之间的距离增加20m5.甲、乙两物体从同一点开始沿一直线运动, 甲和乙的运动图像如图所示,下列说法中正确的是( )A .甲、乙均在3s 末回到出发点,距出发点的最大距离均为4mB .0~2s 内与4~6s 内, 甲的速度等大、反向C .0~6s 内,甲、乙的运动方向均改变一次D .6s 内甲的路程为16m , 乙的路程为12m6.某次排球比赛中球员竖直向上起跳扣球,将该球员的运动看作匀变速直线运动,离地后重心上升的最大高度为H ,若通过第一个5H 所用的时间为t ,则通过最后5H 的时间为( )A .t B .)2tC .tD .)2t 7.随着自动驾驶技术不断成熟,北京、上海等城市某些特定地区相继出现无人驾驶网约车,给市民出行带来方便。
荆州中学2024~2025学年高二上学期九月月考化学试题(全卷满分100分 考试用时75分钟)可能用到的相对原子质量:H-1 C-12 N-14 O-16一、单选题:本题共15小题,每小题3分,共45分。
1.化学与生活密切相关,下列做法与化学反应速率控制无关的是( )A .使用含氟牙膏防龋齿B .洗衣服时使用加酶洗衣粉C .夏天将牛奶放在冰箱保存D .在月饼包装内放置抗氧化剂2.反应在四种不同情况下的反应速率分别为:①;②③;④该反应进行的快慢顺序为( )A .①>②=③>④B .④>③=②>①C .②>①=④>③D .①>④>②=③3.下列离子方程式书写正确的是()A .酸性溶液与溶液反应:B .少量气体通入足量NaClO 溶液中:C .和HI 的反应:D .向溶液中通入少量:4.可逆反应:的图像如图甲所示;若其他条件都不变,只是在反应前加入合适的催化剂,则其图像如图乙所示。
现有下列叙述:甲 乙①;②;③;④;⑤;⑥;⑦甲图与乙图中阴影部分的面积相等;⑧图乙中阴影部分面积更大。
则以上所述各项正确的组合为( )A .②④⑤⑦B .②④⑥⑧C .②③⑤⑦D.②④⑤⑧()()()()A g 3B g 2C g 2D g ++A()11A 0.45mol L min v --=⋅⋅()11B 0.6mol L s v --=⋅⋅()11C 0.4mol L s v --=⋅⋅()11D 0.45mol L sv --=⋅⋅4KMnO 224H C O 22424222MnO 5C O 16H 2Mn 10CO 8H O --++++=+↑+2SO 2224SO H O ClO Cl SO 2H---+++=++()3Fe OH ()323Fe OH 3H Fe3H O+++=+2FeI 2Cl 222I Cl I 2Cl --+=+()()()()A g B g C g D g m n p g ++Av t -v t -21a a =21a a <21b b =21b b <21t t >21t t =5.下列事实不能用勒夏特列原理来解释的是( )A .实验室中常用排饱和食盐水的方法收集B .鼓入过量空气有利于转化为C .、、HI 三者的平衡混合气,加压(缩小容器体积)后颜色变深D .开启啤酒瓶后,压强变小,瓶中立刻泛起大量泡沫6.下列热化学方程式中说法正确的是()A .CO 的燃烧热是,则:B .已知1g 液态肼和足量液态过氧化氢反应生成氮气和水蒸气时放出20.05kJ 的热量,则C .,则含20gNaOH 的稀溶液与过量浓硫酸完全反应,放出的热量为28.7kJ D . ,在密闭容器中充入、,充分反应后放出47.2kJ 的热量7.下列实验方案的设计和实验目的都正确的是( )选项实验方案实验目的A向等体积等浓度的溶液中分别加入5滴等浓度的和溶液,观察气体产生的速度比较和的催化效果B,在平衡体系中加入KCl 晶体探究生成物浓度对化学平衡的影响C 分别向盛有2g 锌粒(大小基本相同)的锥形瓶中加入40mL1mol/L 和40mL18mol/L 的硫酸,比较两者收集10mL 气体所用的时间探究硫酸浓度对反应速率影响D 将球分别浸泡在冰水和热水中探究温度对化学平衡的影响A .AB .BC .CD .D8.和CO 是环境污染性气体,可在表面转化为无害气体,其反应为,有关化学反应的物质变化过程如图1,能量变化过程如图2。
高二九月月考英语答案第一部分听力(共20小题,满分30分)1-5 CCACC 6-10 ABCAC 11-15 CBABA 16-20 BCBAB第二部分阅读(共两节,20小题;每小题2.5分,满分50分)21-23 DBC 24-27 CBAC 28-31 DDBA 32-35 CABD36-40 CGEFD第三部分语言运用(共两节,满分30分)第一节完形填空(共15小题;每小题1分,满分15分)41-45 CBDAC 46-50 BDCBD 51-55 ACBAD第二节语法填空(共10小题;每小题1.5分,满分15分)56. recognition menting 58. was denied 59. before 60. rejected 61. that 62. from 63. academically 64. generations 65. a第四部分写作(共两节,满分40分)第一节(满分15分)【参考范文】Dear Mike ,I’m Li Hua, one of your students from Senior Two, I’m writing to seek your guidance on some challenges I have been facing in my English writing.My problems are as follows. Firstly, what confuses me most is the proper use of tenses. I often mix up tenses, leading to low scores on my writings, What’s more, I s truggle to find appropriate wordsto express myself accurately. Despite my massive efforts to expand my vocabulary, words still fail me when I need to write. In addition, I find it difficult to make my writing well-structured and coherent, which frustrates me a lot.I’d appreciate it if you could give me some practical suggestions on my problems. Looking forward to your reply.Yours,Li Hua第二节(满分25分)Before I knew it, I had only one day left for the project. In a panic I quickly glued together whatever materials I could find, my hands shaking with the weight of each hasty decision. The finished result looked miserable. However, several of my classmates, including Nate, had created amazingly detailed buildings. They used materials like clay, wood and so on and their constructions were highly praised by Mr. Smith. When I saw their models, I felt even more embarrassed about mine. It was apparent that they had put a lot more time into the assignment than I had.That taught me a great lesson. I learned from that day the importance of deciding on my priorities and budgeting my time. From then on, I tackled things a lot earlier instead of putting things off until tomorrow. As a result, not only did I finish my tasks ontime, but I also felt better because I didn’t have to panic at the last minute. At the end of the semester, my work was chosen by Mr. Smith on another occasion. Seeing my change, my parents and my sister were so proud of me. It dawned on me that getting things done on time instead of being a procrastinator really counted.听力录音稿Text 1M: Do you have any idea what’s wrong with my houseplant It gets plenty of sun and enough plant food...W: Are you watering it too often Remember this plant comes from the desert where there’s hardly any rain.M: Ah..Maybe that’s the problem!Text 2M: It seems to be human nature to pursue what we don’t have. Tall people want to be shorter, and short people want to be taller... W: I know. For example, when I was younger, my cousin always wanted my golden hair, and I wanted dark hair like hers.Text 3W: Hi, are there any tickets left for tonight’s concertM: Sorry, they’re sold out. But I can put you on the waiting list, in case there are any cancellations tonight. Would you like me to do thatW: Oh, yes, please. Let me give you my phone number.Text 4M: Oh, this is so annoying! We’ve been driving around for ages, and I haven’t seen a single space.W: There’s a street party going on in town today. That’s probably why it’s busy. Let’s try the supermarket... You can park there for free as long as you buy something.Text 5W: So, tell me a little bit about the character you played in your new film Last Weekend.M: Well, Jake is a sort of the ‘everyman’ character. He doesn’t have any special talents. In fact, he lives a pretty boring life, until his old friend Maggie returns to town...Text 6M: Can I borrow your phone for a second Mine is dead, and I can’t find my charger.W: Sure.M: Thanks. Hey, what’s wrong with your screen It’s all dark and the colors look strange.W: Oh! I’ve been using an app called “Sunset” to help me sleep at night.M: Really HowW: Well, studies show that too much blue light from screens can make sleeping difficult. So, in the evenings, the app puts a red filter (滤光器) over the screen to cancel it out.M: Oh, interesting. Does it helpW: Yeah, I think so! I also listen to white noise, which helps me fall asleep too.Text 7M: Can we do something about the temperature in here I have so many emails to deal with today, but my hands are so cold that I can hardly type my report!W: I know. I’ve been struggling too. But the heat probably won’t be turned on until the end of the month.M: Why notW: It’s a part of the company’s plans to save energy.M: Well, I can understand that. But how are we supposed to work in these conditionsW: I guess we always have the choice to work from home.M: True. But before my youngest daughter starts school, it’s just too difficult for me to do that. I wouldn’t be able to focus.W: Then I think we should talk to the boss about what can be done, otherwise people will start getting ill.Text 8W: Well, here we are! I can’t wait to get inside and see what’s on offer!M: I heard this year’s Mini Fair is going to be even bigger and better than last year’s. It won’t disappoint us.W: Oh really I had to go to a boring work event at that time, so I couldn’t come last year.M: Yes! I got so many things for my model train set.W: Like whatM: Well, the coolest things I got were some tiny little trees. They looked so real.W: Wow!M: I’m hoping t he guy who sells them is here again this year.W: I hope so! Now that I’m satisfied with the inside part of my dolls’ house, I want to focus on creating the garden. So, it would be great to get some little plants and trees. What about youM: I want some little model cars and people to add to my train station scene. But I need to find a toilet first.W: Over there, by the restaurant hall.M: Great. Meet you in five minutes, by the ticket desk.Text 9W: Hi, are you here for the tourM: Yes, I’m Michael Green. Are you the head girlW: That’s right. I’m Jayne Palmer. You look a bit older than the kids I usually show around the school!M: Ha-ha! Yeah, I’ll be sixteen next month.W: My birthday is in October, too!M: ReallyW: Yeah! So, why are you changing schoolsM: Well, my mom got a new job in this area, so we’re moving here. I’ve heard good things about this place.W: Well, as you can see, we have some great facilities... Here are the basketball courts. Then just behind them, you’ll see the football field and the running track. And that building over there is our swimming pool.M: Wow! There wasn’t room for anything like this at my previous school. I was on the swimming team, but we had to travel to use the city pool for our practices.W: Well, we’ve certainly got plenty of space. The arts teaching here is also excellent. We have a music studio and our own theater. M: Amazing!W: So, where would you like to go firstM: Well, I’m quite interested to see the science facilities. I’m hoping for a career in medicine.W: Okay, great! Well, the laboratories have all been updatedrecently, so we’ve got some really good equipment. Follow me. Text 10On my recent business trip to Shanghai, I met up with a local friend who took me out for a very interesting evening meal. At the Community AI Canteen, everything is done by robots. When you walk in there, you place your order on a screen. Using robotic arms, the intelligent cooking system then cooks your food before packing it up... It even adjusts the temperature, depending on whether you want to eat it straight away or take it home with you! To pay, you place your food on a smart cash desk, which immediately calculates (计算) the cost. There’s even a 24-hour noodle machine just outside, which offers hot and fresh food around the clock. The canteen offers a huge amount of choices and the dishes taste great. It is really fun to get “a taste of the future”. However, I’m not sure I would like all restaurants to be run by robots. I can see the benefits for busy families or office workers needing a quick lunch, but what about lonely older people who would miss the human touch I do think we will see more places like this in the future, though. At best, a human waiter can serve around 100 people in a day. The AI system can serve double that figure, making it good for business.荆州中学2024-2025学年高二上学期9月月考英语试题命题人:审题人:(全卷满分150分考试时间120分钟)第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
德强高中2024-2025学年度上学期九月月考高一学年 化学试题答题时间:60分钟 满分100分一、单选题(每题只有一个选项符合要求,每题3分,共54分)1.新冠病毒肆虐,化学在攻克这一世界难题中功不可没,“新型冠状病毒”由蛋白质外壳和单链核酸组成,直径为,怕酒精,不耐高温。
下列说法不正确的是()A .戴口罩、保持距离、勤洗手可降低“新型冠状病毒”感染机率B .“新型冠状病毒”扩散到空气中可形成气溶胶C .“新型冠状病毒”扩散到空气中形成的分散系有一定的稳定性D .喝酒可有效治疗新冠感冒2.下列关于物质分类的组合正确的是( )选项碱酸盐碱性氧化物酸性氧化物A 硫酸小苏打干冰B 烧碱盐酸氯化钠氧化钠一氧化碳C石灰水冰醋酸胆矾氧化钠二氧化硫D NaOH 硫酸钙氧化铁A .AB .BC .CD .D3.下列物质在给定条件下的转化不能一步实现的是( )A .B .C .D .4.、、、各代表一种物质,若,则X 和Y 的反应不可能是( )A .盐和盐的反应B .酸与碱的反应C .碱性氧化物和水的反应D .酸性氧化物和碱的反应5.物质分类在逻辑上存在如下关系:下列说法正确的是()60~140nm 2Ca(OH)27Mn O ()3CH COOH ()42CuSO 5H O -3HNO 3SO CO HCl232Fe O Fe FeCl −−→−−→2H2222H O O H O−−→−−→△2CaCl 溶液2CO HCl32CaCO CO −−−→−−→2OFe 4CuSO Cu CuO−−→−−→溶液X Y Z W X Y Z W +=+A .碳酸盐与钠盐属于包含关系B .化合物与氧化物属于交叉关系C .分散系与胶体属于包含关系D .混合物与空气属于并列关系6.某胶体遇盐卤或石膏易发生聚沉,而与食盐水或溶液相遇聚沉的效果就差一些。
下列有关说法不正确的是( )A .该胶体中胶体粒子大小约为B .该胶体粒子带正电C .使此胶体聚沉的效果不如、D .该胶体遇溶液或胶体可发生聚沉7.下列物质中,属于电解质且现有状态能导电的是( )A .铁丝B .熔融的C .NaCl 溶液D .酒精8.下列反应的离子方程式正确的是()A .氧化铜与稀硫酸反应:B .与盐酸反应:C .足量的盐酸和碳酸钠反应:D .盐酸跟氢氧化铁反应:9.可以用离子方程式表示的化学反应是( )①稀硫酸与氢氧化钡溶液反应②氢氧化钾溶液与稀硝酸反应③稀盐酸与氢氧化铜反应④澄清石灰水与盐酸反应⑤碳酸氢钠与氢氧化钠溶液反应A .①③B .②④C .①②③D .②④⑤10.有一瓶溶液只含、、、、、六种离子中的两种或两种以上的离子。
九年级九月月考化学试题
一、选择题(每小题只有一个选项符合题意每小题2分、共16分)
1.下列括号中对日常生活的变化判断正确的是()
A.嘴嚼米饭时有甜味(化学变化)
B.玻璃窗破裂(化学变化)
C.二氧化碳使澄清的石灰水变浑浊(物理变化)
D.纯净物加热后变为混合物(物理变化)
2.下列实验现象的描述正确的是( )
A.木碳在氧气中燃烧产生明亮的黄色火焰
B.磷在氧气中燃烧产生大量的白雾
C.硫在空气中燃烧发出淡蓝色火焰,生成带刺激性气味的气体
D.铁丝在氧气中剧烈燃烧,火星四射,生成四氧化三铁
3. 某些金属工艺品的外观有银白色的金属光泽,同学们认为它可能和铁一样,有磁性,在讨论时有同学提出“我们可以拿磁铁来吸一下”,就“拿磁铁来吸一下”这一过程而言,属于科学探究中的()A.假设 B.实验 C.观察 D.做出结论
4.分子和原子的主要区别是()
A.分子大、原子小
B.分子间有间隔,原子间没有间隔
C.在化学变化中,分子可以再分,而原子不可再分
D.分子在不停运动,原子不运动
5.下图是气体物质的粒子示意图,图中“●”和“O”分别表示
两种不同的原子,其中表示纯净物的是 ( )
6.下列实验操作正确的是:()
7.实验室制取氧气大致可分为以下几个步骤: a将高锰酸钾装入试
管, 用带导管的橡皮塞塞紧试管口,并把它固定在铁架台上; b检查
装置的气密性; c 点燃酒精灯给试管加热; d 用排水法收集氧气; e
熄灭酒精灯; f 将导气管从水中取出. 正确的操作顺序是( )
A. bacdfe
B. abcdef
C. bacdef
D.abcdfe
8.小强用托盘天平称5.0克食盐,当指针不在分度盘中央而偏右时,就开始称量。
称量后天平达到平衡时(指针在分度盘中央),则实际称量的食盐的质量()
A.等于5.0克
B.小于5.0克
C.大于5.0克
D.无法判断
二、填空:(每空一分,共19分)
9.(6分)写出下列反应的文字表达式.
(1)硫在空气中燃烧:_________ ;(2)红磷在空气中燃烧:
_________;
(3)实验室用无色液体过氧化氢在常温下制取氧气:_____________;(4)铁在氧气中燃烧:______________________;
其中属于化合反应的是(填序号),属于分解反应的是 ______ 10. (2分)下列物质:①高锰酸钾②洁净的空气③液态氧④二氧化碳⑤海水⑥硫粉⑦高锰酸钾加热制取氧气后的剩余物⑧加碘食盐
属于混合物的是_____(填序号);属于纯净物的是________(填序号). 11.(2分)向上排空气法收集氧气时,验满的方法是
12.(7分)将一种无色的液体A装入试管,用带火星的木条试验,无现象,而向其中加入少量黑色粉末B后,迅速产生气泡,生成了使带火星的木条复燃的气体C,使金属E红热并伸入盛有气体C、瓶底
有少量液体D的集气瓶中,金属E剧烈燃烧,火星四射,生成黑色固体F。
(1)写出它们的名称
A: B: C: D: E: F:
(2)B在化学反应中所起的作用
13.阅读以下材料,回答问题。
煤气的主要成分是一氧化碳,通常情况下,它是一种没有颜色、没有气味的气体。
为了防止煤气中毒,常在煤气里加一些有强烈刺激性气味的气体――硫醚。
当煤气泄漏时,人们可以从硫醚的气味觉察到煤气泄漏了,以便及时采取措施。
1L一氧化碳约重1.25g左右,密度跟空气接近。
一氧化碳燃烧生成二氧化碳。
一氧化碳还可以跟铁矿石中的氧化铁在高温条件下反应,生成铁和二氧化碳,从而用于工业冶炼钢铁。
一氧化碳的物理性质有:;一氧化碳的化学性质有:
三、实验探究(每空一分,共15分)
14.(15分)某校研究性学习小组到实验室进行探究实验。
他们准备用加热高锰酸钾的方法制取氧气并验证氧气的性质。
(1)写出用该方法制取氧气的化学反应
文字表达式_______________。
(2)请指出右图中所用仪器的名称:
a _____
b ______ c_______d _____
(3)他们所用的装置图中有一些错误,请你为他们指出来:
①.______ ②._______③._____ ④._______
(4)用这种方法收集氧气时,当气泡________再开始收集,收集满氧气后,应用玻璃片盖住集气瓶口,并且应_______(填“正放”或“倒放”)在桌上。
(5)他们用这种方法收集了两瓶气体。
在先收集的一瓶插入带火星的木条,只看到火星亮了一些,插入后收集的一瓶木条则能复燃。
导致这个现象的可能的原因是(写出操作上的原因):___________。
(6)某同学在用加热高锰酸钾制氧气的过程中,发现试管炸裂,试你帮她分析一下造成此后果的原因可能有(至少答三点);___ ; ____。
九年级九月月考化学答题纸
一、选择题(共16分)
二、填空:(每空一分,共19分)
9.(6分)写出下列反应的文字表达式.
(1)____ _____ (2)___ ______ (3)___ __________ (4)_________ _____________ 其中属于化合反应的是(填序号),属于分解反应的是 __ 10. 属于混合物的是___ __(填序号);属于纯净物的是________ 11.(2分)
12.(7分)(1)写出它们的名称
A: B: C:
D: E: F:
(2)
13.物理性质有:;
化学性质有:
三、实验探究(每空一分,共15分)
14.(1)________ _______。
(2)a __ ___b ___ ___ c_____ __d ___ __ (3)①.__ ____ ②.___ ____③.___ __ ④.___ ____ (4)______ __; _______(填“正放”或“倒放”)(5)_____ ______。
(6);
_ __ ;
__ __。