2021合肥二模

2020-2021学年合肥市肥西中学高三英语二模试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AUNUSUAL ATTRACTIONS ON THE WATERBangkokFloating MarketsThere are many floating markets where goods are sold from boats. While modem markets are more popular, floating markets still are huge attractions for local tourism. In Bangkok Floating Markets,Thailand, one of the most popular ones, any visitors can buy local foods and traditional hand-made souvenirs.Bregenzer Festspiele（Opera festival）The Bregenz Festival is held every year from July to August inVorarlberg,Austria. It has the world's largest stage on the water. The performances are different every year but they are usually united by one theme. The decorations（装饰）are very impressive and are worth seeing.Viva, ArtificialIslandArtificial islands are not something new. What makes this island special is that . it is floating. Viva is the largest out of three man-made islands along with Vista and Tera, all situated inSeoul,South Korea. The island weighs 2,000-tons and is technically a buoy（浮标）.The island unfortunately is not carbon-neutral（碳中和）but it has solar panels which can generate electricity to power the hall, restaurants and shopping malls. MarinaBayFloating Platform StadiumThis stadium was built as a temporary solution while Singapore National Stadium was rebuilt. Now it is usedfor different sporting events, concerts, and festivals. In particular, it was once used for the opening and closing ceremonies during the 2010 Summer Youth Olympics.1. What can visitors do at Bangkok Floating Markets?A. Performing.B.Boating.C. Shopping.D. Swimming.2. What do you know about Viva?A. It is the biggest island inSouth Korea.B. It has the equipment to harness solar energy.C. It is the largest floating stage on the water.D. It is a man-made island only for low-carbon life.3. Which attraction should you choose to watch a basketball match?A. Bangkok Floating Markets.B. Bregenzer Festspiele.C. Viva, ArtificialIsland.D.MarinaBayFloating Platform Stadium.BI waschecking out at the supermarket counter on Wednesday night, ready to pay for my bananas, when all ofa sudden, fear came upon me. My wallet was gone. And I could only have left it one place: the G9 bus, from which I had gotten off minutes earlier and which was now speeding to some stops. The moment of realizing it was gone was followed by mental math. How much time and money would it cost to replace the credit cards, the driver's license, the expensive lipstick ($ 55!).Two hours after I was back at my house, I heard a knock on the door. My husband answered while I sat in the dining room on the phone with a credit card company. "Does Jennifer live here?" I heard someone say. In her hand was my wallet, without a penny missing. She left before I could offer my gratitude to her.After I posted the story, I heard from her boyfriend, who identified the good citizen as Erin Ball, a 26-year-old girl working for a trade organization.Once I figured out her, I called to thank her. She said she spotted my wallet and thought that it's more dangerous to go to a stranger's house than leaving the wallet with the driver, but she still decided to take the chance. "If I were in that situation, I would want someone to try to find me," she said. Ball doesn't find her actions particularly excellent. She added, "It's not hard to do small things for people."After Ball found my wallet, she decided to post a picture of my driver's license online before going to my house, trying to see if anyone knew me. No sooner had she left my doorstep than I got emails from two neighbors who recognized my face, both offering to help me find my missing property.Ball found my house on a bitterly cold night,for which I was extremely grateful. Looking back, I'm not surprised someone had wanted to help a stranger. A warm current of honesty and harmony is running through this town.4. What do we know about the author according to paragraph 1?A. She missed the G9 bus.B. She paid for her bananas.C. She replaced the credit cards.D. She found she had left her wallet on the bus.5. Who helped the author find Ball?A. The G9 driver.B. The girl's boyfriend.C. The author's neighbors.D. The author's husband.6. What did Ball do first after finding the wallet?A. Ball called the author.B. Ball went to the author's house.C. Ball gave the wallet to the bus driver.D. Ball posted a photo of the author's driving license.7. Which of the following best describes Erin Ball?A. Humorous and kind.B. Generous and demanding.C. Honest and warm-hearted.D. Caring and outgoing.CWhen I was a kid, my mom set aside some breakfast food for supper every nowand then. I remember one night after a long, hard day at work, my mom placed a plate of eggs, sausage, and a plate of extremely burnt biscuits on the table. I waited to see if my dad would get annoyed.All my dad did was to reach for the biscuits, smile at my mom and ask me how my day at school had been. I don't remember what I told him that night but I do remember watching him add butter and jelly on that ugly burnt biscuit and ate every bite of that thing. He never made a face nor uttered a word about it!When I rose from the table that evening, I remember hearing my mom apologize to my dad for overcooking the biscuits and I will never forget what he said, “Honey, I love burnt biscuits every now and then."Later that night, I went to say good night to my daddy, and I wondered if he really liked his biscuits burnt. He wrapped me up in his arms and said gently, "Your mom put in a hard day at work today and she is really tired. Besides, a little burnt biscuit never hurt anyone!As I have grown older, I've thought about that many times. Life is full of imperfect things and imperfectpeople. Learning to accept each other's faults and choosing to celebrate each other's differences contribute to a healthy, growing, and lasting relationship. We could extend this philosophy to any relationship, such as a husband-wife, parent-child, or friendship. Don't put the key to your happiness in someone else's pocket. Keep it in your own. So, please pass me a biscuit, and yes, the burnt one will do just fine.8. How did the author's dad react to the burnt biscuit?A. He set it aside for breakfast.B. He ate butter and jelly instead.C. He uttered his complaints loudly.D. He ate it up as if nothing happened.9. Which of the following words can best describe the author's dad?A. Caring.B. Determined.C. ProudD. Hardworking.10. What does the author suggest people do in the last paragraph?A. Show understanding to imperfect things.B. Ask the children to respect their parents.C. Enjoy the over-cooked biscuits willingly.D. Make important decisions on your own.11. In which section of a magazine may this passage appear?A. History and culture.B. Family and relationship.C. Cuisine and health.D. Entertainment and sports.DRichard Campbell is a secondary school student. He is15 years old. He lives in a small town in the north ofEngland. Every morning, he gets up at eight o’clock, puts on his uniform and walks to school.One hour later, the lessons start. The students usually study maths, English, history and geography in the morning. They usually study music and drawing and they play sports after lunch. They have a ten-minute break between classes. They also spend a long time in the school library, reading books and doing their homework.Richard likes his school very much. His favourite subjects are English and geography, but he doesn’t like maths because he is not good at it.Richard and all his friends spend the whole day at school. Lunch is at one o’clock. He doesn’t like the food that the school serves. This is why he often brings a packed lunch from home. He always has his lunch in the dining hall, but some of his friends sometimes eat in the courtyard or outside the school gate.At weekends, he always goes out with his friends because he doesn’t go to school. On Saturday, he always goes to the cinema or to the sports centre. On Sunday, he just goes for a walk with his dog.12. What time do Richard’s lessons begin in the morning?A. At 8:00.B. At 8:30.C. At 9:00.D. At 9:10.13. What does Richard like best?A. Maths and English.B. English and geography.C. History and maths.D. Geography and history.14. Where does Richard have lunch on weekdays?A. In the dining hall.B. At home.C. In the courtyard.D. Outside his school gate.15. What does Richard always do on Saturday?A. He reads and does homework.B. He goes to see films or does sports.C. He walks his dog or does exercise.D. He spends a long time in the library.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

50分阅读限时满分练(五)(限时35分钟)Ⅰ.阅读理解(共15小题; 每小题2.5分, 满分37.5分)A(2021·安徽合肥二模)CVCC’s High School ProgrammeCareer-technical programmes at Cuyahoga Valley Career Centre allow students flexible career paths with advanced knowledge to prepare them for college and work.Electrical SystemsEach student is provided with trade-related classroom training that produces competency and pride that lead to true craftsmanship. Learn how to use many of the latest tools and technologies with hands-on training in our fully equipped lab. The programme’s diversified coursework gives students a strong foundation in electrical systems installation and repair, in addition to receiving skill training, working and earning a paycheque on the job.Engineering TechnologyYou’ll learn engineering concepts and technology such as applied logic, digital electronics, computer-aided design, robotics and computer-integrated manufacturing. The project-based approach lets you apply your skill to real situations. In practice, you’ll pick your own real-world problems to solve and get ready for a college engineering programme.Sports Medicine Exercise ScienceThis science-based programme combines lectures, hands-on labs and critical thinking activities with all of the latest fitness technology. Students have the unique opportunity to learn in exercise and sports environments alongside exercise and sports professionals using advanced medical techniques to prevent and heal injuries. Upon completion of the programme, students may earn college credits at various Ohio universities. Applicants must have a minimum 3.0 GPA(Grade Point Average) and “C” or better in Biology.Education ProfessionEducation Profession introduces college-minded students to the field of education. This foundational course benefits all education majors regardless of specialty. Observation and field experiences provide the first-hand experience you need to decide if a career in education is for you. Admission is with high school counselor(顾问) recommendation only.1.Which programme offers students pay?A.Electrical Systems.B.Engineering Technology.C.Sports Medicine Exercise Science.cation Profession.2.What is special about Sports Medicine Exercise Science?A.It is targeted at college students in Ohio.B.It is aimed at training professional athletes.C.It only admits applicants with recommendation.D.It has academic requirements for applicants.3.What can we infer about the programmes mentioned in the text?A.They are science-related.B.They are technology-centred.C.They stress practical training.D.They guarantee admission to college.B(2021·宁夏银川高三教学质量检测)Chinese cuisine is widely known and enjoyed all around the world. Who doesn’t long for a favourite Chinese dish? But there is one interesting concept concerning Chinese food which is almost unheard of in the West, and which is becoming increasingly ignored by the youth of the East—the ancient custom of “tonic food”.Tonic food is food which is consumed to improve one’s well-being or avoid sickness. For instance, it was once the custom for new mothers to eat a sesame oil(麻油) hot pot every day for the first month after giving birth. It was believed that this dish would benefit the muscles, reduce pain, improve circulation, stimulate sweating, and warm the body. Some foods, such as mutton and spinach(菠菜), are seen as “hot”, while others, such as Chinese cabbage and radish(樱桃萝卜), are seen as “cold”. One should be careful not to eat too much of either “hot” or “cold” food. However, how much “hot” or “cold” food one should eat depends on the time of the year, how the food is prepared and what it is prepared with, and the individual’s health.The custom of tonic food for a healthier life also influences the catering industry. Chinese herbal medicines, such as wolfberry(枸杞), can be found on many restaurant menus, either added to fruit tea or as a beneficial addition to a dish. These herbs attract customers, such as over-worked office staff, in need of a modest pick-me-up.So, whether you need to boost your strength with a large helping of chicken soup, or increase your mental powers with a serving of pig’s brain soup, you may find that this ancient Chinese custom could be just the tonic you are looking for.4.What is the present situation of tonic food?A.It is catching less attention.B.It is enjoyed by many young people.C.It is well-known worldwide.D.It is becoming increasingly popular.5.What is believed to benefit new mothers?A.Chinese cabbage.B.Fruit tea.C.Sesame oil hot pot.D.Pig’s brain soup.6.What does the underlined word “catering” mean in paragraph 3?A.Medicine.B.Restaurant.cation.D.Fashion.7.What can be a suitable title for the text?A.The Charm of Chinese CuisineB.The Popularity of Tonic FoodC.An Introduction to Chinese Tonic FoodD.Differences between Hot Food and Cold FoodC(2021·黑龙江齐齐哈尔二模)A new study looks at how pets provide important support through petting, cuddles(拥抱), and a frequent physical presence. This is especially key when people feel lonely.The researchers interviewed 32 people aged 59 to 83. Pets included dogs, cats, birds, etc. More than 90% of the people spoke about touch in the relationship with their pets. “Participants often described touch-based interactions with their pets as being comforting or relaxing in a way that contributed to their overall well-being,” the researchers say. “For our participants, comfort is the sense of being somehow cared for by another being.”Many people in the study spoke about how their pets just seemed to “know” when they weren’t feeling well and they’d move to get physically near them. Different pets were better at providing comfort, some participants insisted. Many said cats were more relaxing than dogs, while others said dogs could be relaxing as long as they were “the right kind of dog”. But almost all pets provided some sort of comfort to their owners when it came to touch.Janette Young, lecturer in health sciences at the University of South Australia, and her team uncovered an interesting thing about the pet-human relationship. People in the study often spoke about how their animals demanded to be petted or seemed to take joy in the interaction. This, in turn, made the humans feel good.The researchers suggest that pets can be “helpful in reducing touch deprivation(匮乏)” and the benefits can come from all kinds of pets. This connection can be particularly important in health care and senior care settings where patients and workers are less likely to be able to see friends and family; yet touch is important and can improve health and happiness.Pets can also offer benefits that in some cases people can’t offer. “Relationships with pets are different to those with humans,” Young says. “Animals don’t judge and are always with us.”8.About what did some participants hold different opinions?A.What pets were better at providing comfort.B.Whether pets could make them feel relaxed.C.How they felt when their pets touched them.D.When pets could notice their owners’ discomfort.9.What did Janette Young find about the pet-human relationship?A.It is full of judgments.B.It turns out temporary.C.It benefits both parties.D.It is determined by pets.10.What may researchers suggest hospitals do?A.Encourage pet connection programmes.B.Raise pets to reduce human touch.C.Select the best pet companions.D.Order workers’ friends to pay visits.11.What is the main idea of the text?A.Humans need spiritual support.B.Pet-human interactions are common.C.Lonely people like living with pets.D.Pets offer humans touch-based comfort.D(2021·山东日照一模)Looking for a place to take a rest, sip a cup of coffee and have a furry companion? Welcome to animal-themed cafes.In recent years, the combination of pets and catering has become incredibly popular in many cities throughout China. While many cafes started out offering the company of cats and dogs, others are expanding their range. Some cafes include animals like squirrels, raccoons(浣熊) and even capybaras(水豚).Many Internet users have commented that their main reason for visiting these businesses is to interact closely with animals they have only seen from afar.“The customers love animals. They are curious about these pets and want to raise one at home but circumstances don’t allow it,” said pet cafe owner Tian Rui. Liu Jing, a Beijing resident who works in finance, loves pigs, but her parents would not endorse her getting one as a pet. The 24-year-old had to admire the animals through videos and images. But now, she can have close contact with an adorable pig every weekend in a pet cafe.Also, these pet cafes serve as a shelter for those who find comfort in being around animals. “In this place, you can get close to the cute little ones in a very comfortable way without having to worry about safety and hygiene(卫生)—overall, it is an extremely comfortable experience,” said Zhao Ming from Tianjin, a frequent pet cafe visitor.Animal lovers also expect the pet cafes to change people’s attitudes towards pets. Animals like ducks, pigs and sheep have been served as food for many years. People hardly see them as pets. But the pet cafes help shift their attitude from seeing them as playthings to regarding them as family members or close friends.“Whether at home or in stores, these little animals are there for companionship and they bring warmth to our hearts. They care and understand just like family members. They give us much more than the love we give to them,” Zhao said.12.Why do people visit pet cafes?A.To pursue inner peace.B.To appreciate animal images.C.To experience a clean environment.D.To have close contact with animals.13.What does the underlined word “endorse” in paragraph 4 mean?A.Believe in.B.Approve of.C.Prevent.D.Suspect.14.We can conclude from paragraph 6 that pet cafes may.A.change our views of animalsB.teach us how to look after pets betterC.show us the importance of having petsD.remind us to value our family and friends15.Which of the following can be the best title for the text?A.Cafes Enjoy Great PopularityB.Ideal Shelters for Lovely AnimalsC.Animals Turn into CompanionsD.Animal Lovers from Different CitiesⅡ.七选五(共5小题; 每小题2.5分, 满分12.5分)(2021·江苏淮安高三适应性联考)If you’re looking to maximise the amount of fat burning in your next workout, think about having a coffee half an hour before you get started. 16Researchers found that 3 milligrams(毫克) of caffeine per kilogram of body weight can raise the rate of fat burning during aerobic(有氧的) exercise. 17 The coffee dose was shown to increase maximal fat oxidation rate(脂肪氧化率) by an average of 10.7 percent in the morning and 29 percent in the afternoon.The recommendation to exercise on an empty stomach in the morning to increase fat oxidation is common. 18 It is still unknown whether this increase is due to exercising in the morning or due to going without food for a longer period of time.19 Caffeine is often associated with improved athletic performance, though the science behind this link isn’t as comprehensive as it could be. In later cycling tests after the caffeine had been given, thefat-burning capability of the body was measured, showing the impact that caffeine had made on MFO. Maximum oxygen uptake was also raised, as was the intensity(强度) of exercise.The results of the study showed that acute caffeine intake 30 minutes before performing an aerobic exercise test increased MFO during exercise regardless of the time of day.20 Overall, these results suggest that a combination of acute caffeine intake and exercise at moderate intensity in the afternoon provides the best solution for individuals seeking to increase whole-body fat oxidation during aerobic exercise.A.It is based on the results gathered from 15 male volunteers.B.However, this recommendation may lack a scientific basis.C.Evidence is mounting that morning exercise is good for your health.D.A new study suggests it can make a significant difference to fat burning.E.They are clear enough to suggest that there is some kind of association there.F.Researchers have found that if cyclists take more caffeine, they will ride much faster.G.Researchers were keen to look in detail at the relationship between caffeine and exercise.50分阅读限时满分练(五)【语篇导读】本文是一篇应用文。

2020-2021学年安徽省合肥市初三物理二模试卷学校：__________ 姓名：__________ 班级：__________ 考号：__________注意事项：1．答题前填写好自己的姓名、班级、考号等信息2．请将答案正确填写在答题卡上一、单选题1．如图是撑杆跳高时的情形，运动员还能继续，上升一定的高度，这时主要依靠（）A．运动员的动能B．运动员的重力势能C．杆的弹性势能D．运动员的升力2．下列各种情况中，物体的机械能变大的是（）A．跳伞运动员从空气中匀速下落B．人乘电梯匀速上楼C．列车在平直轨道上匀速行驶D．足球在水平面上滚动3．使用简单机械时（）A．一定省力B．可能省力，一定不能省功C．可能省力，也可能省功D．可能省功，一定不能省力4．抛出去的圆球在光滑水平面上做匀速直线运动，它的受力情况是 ........................... （）A．只受重力和支持力B．只受重力、支持力和抛力C．只受重力、支持力和摩擦力D．只受重力和摩擦力5．一人用200N的力沿水平方向推着重为600N的箱子在水平地板上恰好做匀速直线运动，若此人突然将推力增大到300N，则地板对箱子的摩擦力大小为（）A．100N B．200N C．300N D．600N6．一个物体同时受到大小相等、方向相反的两个力的作用，则这两个力 ................... （）A．一定是相互作用力B．一定是平衡力C．既是平衡力又是相互作用力D．以上说法都不对7．2010年5月1日，上海世博会开幕．如图所示是上海世博会门票，门票中有中国自主知识产权的芯片——“世博芯”，它记录着参观者的资料，并能以无线方式与遍布世博园区的传感器交换信息．在交换信息时，应用了大量的物理知识，下列知识得到应用的是 ..... （）A．回声B．电流的热效应C．电磁感应D．光的反射8．下列做法中符合安全用电原则的是（）9．如图所示电路，电源电压6 V保持不变，定值电阻的阻值为10 Ω，滑动变阻器的最大阻值为20Ω，当开关闭合，滑片由b端向a端移动的过程中，以下说法正确的是......... （）A．当滑片移到a端时，电流表示数为0.2 AB．当滑片移到中点时，电压表示数为2 VC．电压表示数与电流表示数的比值不变D．电压表的示数减少10．2010年1月2日起，我国北方大部地区遭遇大范围降雪天气袭击。

安徽省合肥市高考数学三年（2020-2022）模拟题知识点分类
汇编-03数列
一、单选题
A ．
518
B ．
29
6．（2021·安徽合肥·统考二模）设正项等比数列32342S a a a =++，则1a =（ ）
A ．1
2
B ．27．（2021·安徽合肥·统考一模）将方程
则该数表中，第n行第1个数是___________.
12．（2021·安徽合肥·统考一模）百善孝为先，孝敬父母是中华民族的传统美德.因父母年事渐高，大张与小张兄弟俩约定：如果两人在同一天休息就一起回家陪伴父母，并把这一天记为“家庭日”.由于工作的特殊性，大张每工作三天休息一天，小张每周星期一与星期五休息，除此之外，他们没有其它休息日.已知2021年1月1日(星期五)是他们约定的“家庭日”，则2021年全年他们约定的“家庭日”共有___________个.
三、解答题
（2）求数列{}2
n
a n a +的前n 项和n
S
.
参考答案：。

2021年安徽省合肥市包河区中考语文二模试卷一、语文积累与综合运用（35分）1．（10分）默写。

（1）兔从狗窦入，。

（汉乐府《十五从军征》）（2），自将磨洗认前朝。

（杜牧《赤壁》）（3）天接云涛连晓雾，。

（李清照《渔家傲》）（4），小桥流水人家。

（马致远《天净沙•秋思》）（5）郦道元《三峡》中从正面描写水势之险，水位之高的句子是：“，”。

（6）杜甫在《望岳》中用“，”表达了勇于攀登，俯视一切的雄心壮志。

（7）《醉翁亭记》中，表现醉翁“言在此而意在彼”的句子是：“，”。

2．（9分）请运用所积累的知识，完成各题。

我不去想，我不去想，是否能够成功，能否赢得爱情，既然选择了远方，既然钟情于玫瑰，便只顾风雨兼程。

就勇敢地吐露真诚。

我不去想，我不去想，身后会不会袭来寒风冷雨，未来是平坦还是泥nìng，既然目标是地平线，只要热爱生命，留给世界的只能是背影。

一切，都在意料之中。

（汪国真《热爱生命》）（1）根据拼音写汉字，给加点字注音。

泥 nìng 吐露．（2）用“/”给下面的诗句标出两处停顿。

留给世界的只能是背影（3）“风雨兼程”在文中的意思是。

（4）这首诗歌运用和的表达方式，启示我们要“”（用原文词语填空）。

3．（6分）学校开展“向英雄致敬”主题系列活动，请你参与。

请按提示修改“征文启事”。

征文启事为引发同学们学习英雄事迹，弘扬奉献精神，学校编辑部拟向全体学生征集以“向英雄致敬”为主题的文稿，文体不限，不少于800字。

稿件请注明姓名、班级，交给3号楼304室张老师。

欢迎同学们涌跃投稿。

校编辑部2021年4月20日①“征文启事”中有错别字的词语是“”，正确写法是“”。

②画线句子有语病，请你修改。

③“征文启事”的内容不完整，请提出修改意见。

4．（3分）下面是王亮同学征文稿的结尾部分，请你帮忙补充完整。

（填书名）中的许云峰是英雄，他用双手为战友挖开了一条生命通道；勇武善战的（填人名）是英雄，他用一把菜刀在湖南建立了一个苏区；之年（71岁）的李兰娟是英雄，她用行动诠释了医者仁心。

合肥市2020-2021年高考理综-化学二模考试试卷姓名:________ 班级:________ 成绩:________一、单选题 (共20题；共40分)1. （2分） (2017高二下·宣城期末) 化学是“五颜六色”的，下列颜色变化不包含化学变化的是（）A . 刚切开的钠为银白色，迅速变暗B . 浓硫酸滴在胆矾晶体表面，蓝色变白C . 小龙虾出锅“着红袍”D . CCl4加入碘水中，振荡后碘水褪色2. （2分）防冻剂是一种能在低温下防止物料中水分结冰的物质．下列可用于防冻剂的物质中，含有氮元素的有机物是（）A . 甲醇[CH3OH]B . 氯化钙[CaCl2]C . 尿素[CO（NH2）2]D . 亚硝酸钠[NaNO2]3. （2分） (2015高二下·枣阳期中) X与的两种微粒，下列叙述正确的是（）A . 一定都是由质子、中子、电子组成的B . 化学性质几乎完全相同C . 核电荷数和核外电子数一定相等D . 质子数一定相同，质量数和中子数一定不相同4. （2分）下列化学用语表示不正确的是（）A . 乙醛的结构简式：CH3COHB . 乙烯的比例模型：C . S2﹣的结构示意图：D . 含中子数为10的氧元素的一种核素 O5. （2分） (2019高二下·阿城期中) 下列叙述正确的是（）A . 由极性键结合而成的分子一定是极性分子B . 非极性键只存在于双原子单质分子里C . 非极性分子中，一定含有非极性键D . 一般情况下，极性分子易溶于极性溶剂，非极性分子易溶于非极性溶剂6. （2分） (2018高二上·唐山期中) 下列反应既是氧化还原反应，又是吸热反应的是（）A . 实验室制备氢气B . 灼热的碳与水的反应C . Ba(OH)2·8H2O与NH4Cl的反应D . 铝粉与氧化铁粉末反应7. （2分）(2017·大连会考) A、B、C均为短周期元素，它们在周期表中的位置如右图．已知B、C两元素在周期表中族序数之和是A元素族序数的2倍；B、C元素的原子序数之和是A元素原子序数的4倍，则A、B、C 所在的一组是（）A . Be、Na、AlB . B、Mg、SiC . O、P、ClD . C、Al、P8. （2分）氯化硼的熔点为﹣107℃，沸点为12.5℃，在其分子中键与键之间的夹角为120°，它能水解，有关叙述正确的是（）A . 氯化硼分子间含有氢键B . 氯化硼中心原子采用sp杂化C . 氯化硼分子呈正三角形，属非极性分子D . 其分子空间结构类似CH4O9. （2分）下列叙述中正确的是（）①锌跟稀硫酸制取氢气，加入少量硫酸铜溶液能加快反应速率②镀层破坏后，白铁（镀锌的铁）比马口铁（镀锡的铁）更易腐蚀③钢铁表面常易锈蚀生成Fe2O3•H2O．A . 都正确B . ①③C . ①D . ②③10. （2分）以下实验：①为检验RX是溴代烷，将RX与NaOH水溶液混合后再加入AgNO3溶液；②实验室里用无水乙醇和浓硫酸共热至170℃制乙烯；③用油脂与碳酸钠溶液混合加热制肥皂④在试管中加入2mL10%的CuSO4溶液，滴入2%的NaOH溶液4～6滴，振荡后加入乙醛溶液0.5mL，加热至沸腾；会失败的实验是（）A . ①②③B . ①③④C . ②③④D . ①②③④11. （2分） (2020高一上·遂宁期末) 在常温下发生下列几种反应：①16H++10Z−+2XO4-=2X2++5Z2+8H2O②2A2++B2=2A3++2B−③2B−+Z2=B2+2Z−根据上述反应，判断下列结论不正确的是（）A . ①中X2+是还原产物B . 还原性强弱的顺序为：Z−＞A2+C . 氧化性强弱的顺序为：XO4-＞B2D . 溶液中可发生：Z2+2A2+=2A3++2Z−12. （2分） (2016高一上·六安期末) 某溶液中有Fe3+、Mg2+、Fe2+和Na+四种离子，向其中加入过量的氢氧化钠溶液并搅拌，再加入过量盐酸，溶液中大量减少的阳离子是（）A . Fe3+B . Mg2+C . Fe2+D . Na+13. （2分）(2018·广安模拟) 常温下，分别向体积相同、浓度均为1 mol／L的HA、HB两种酸溶液中不断加水稀释，酸溶液的pH与酸溶液浓度的对数(lg C)间的关系如图。

2021-2022学年安徽省合肥市普通高校高职单招职业技能二模测试卷(含答案) 学校:________ 班级:________ 姓名:________ 考号:________一、单选题(20题)1.化学与生活密切相关。

下列叙述错误的是（）A.纯碱溶液用于清洗餐具油污B.玉米淀粉和废弃秸秆可生产乙醇C.“84消毒液”可以喷洒于衣物上进行杀菌消毒D.珠江三角洲的形成与胶体聚沉有关2.长江被称为“黄金水道”，这是因为它()A.地理位置重要B.为农业灌溉提供了丰富的水源C.航运价值大D.水能资源丰富，建设了许多大型水电站3.都江堰和秦始皇陵哪个的修建年代更早？()A.都江堰B.秦始皇陵4.下列属于“南南合作”关系的一组是()A.日本、澳大利亚B.巴西、中国C.美国、中国D.美国、日本5.下列属于天体的是（）A.地球B.银河系C.总星系D.河外星系6.以下各种结构中，其中不同于另外三个的是（）A.A.天文台穹顶B.B.长城C.C.大坝D.D.桥墩7.用小旗判断风向时，小旗飘向北方，这时吹的是()A.北风B.西风C.南风8.企业各种关系中最重要的一种是（）。

A.领导与企业的关系B.领导与职工的关系C.职工与企业的关系D.职工与职工的关系9.下列不是我国现代企业制度基本特征的是()。

A.产权消晰B.权责明确C.政企分开D.目标管理10.我国美丽富饶的南海诸岛，有许多是由珊瑚虫分泌物堆积而构成的珊瑚礁形成的。

珊瑚虫属于腔肠动物，其显著特征是()A.身体呈辐射对称，有口无肛门B.身体呈两侧对称，有口无肛门C.身体呈圆柱形，有口无肛门D.身体呈圆筒形，身体分节11.关于下列诗句或谚语隐含的化学知识，说法错误的是（）A.“爆竹声中一岁除”，爆竹中的火药含有硫磺B.“木棉花落絮飞初”，“絮”的主要成分是纤维素C.“谷雨种甘蔗”，甘蔗中的蔗糖是多糖D.“雷雨发庄稼”，该过程有硝酸生成12.“人生没有真正的完美，只有不完美才是最真实的美；人生没有一帆风顺，只有披荆斩棘才能路路顺。

第17章综合素质评价一、填空题(每小题2分，共20分)1. 【学科素养·提问能力】如图所示，某物理小组在探究条形磁体“吸附”能力的实验时，用酒精灯给条形磁体加热一段时间后，发现大头针纷纷下落。

请根据这一现象提出一个可探究的科学问题：______________________。

2. 【原创题】根据课堂所学，我们利用两个磁体和数枚某金属硬币制作成了一座硬币桥，如图所示。

想一想，硬币桥搭建的原理是利用硬币被________后具有磁性搭成的。

3. 【2021·安徽】如图所示，小林将导线绕在一根铁钉上，制成电磁铁，与电池接通后，铁钉的尖端为________(填“N”或“S”)极。

4. “磁悬浮地漏”相对于传统地漏具有较多优点，如排水速度可随积水深度自动调节、在不排水时能密封管道等。

磁悬浮地漏的工作原理如图所示，当密封盖上方无水时，在磁体B的作用下，磁体A将密封盖顶起。

若磁体A下端为N 极，则磁体B上端为________极。

5. 【2021·淮南二模】将一枚小磁针按如图甲方式放置在通电直导线下方时，小磁针的N极向纸内偏转。

若让持续的电子沿着如图乙所示的水平方向平行地飞过磁针上方时，图乙中的小磁针的N极将向纸________(填“内”或“外” )偏转。

6. 【立德树人·传承中国科学文化】古文《论衡·是应篇》中记载：“司南之杓(用途)，投之于地，其柢(握柄)指南”，学术界于1947年想象出司南的模样并印刷在邮票上。

如图所示，当磁勺在正确指南时，其A端为该磁体的________(“N”或“S”)极。

7. 【2021·蚌埠蚌山区模拟】如图所示为简易直流电动机模型，把线圈两端导线的漆按图中方法刮去，一端导线一周的漆全部刮去，另一端导线的漆刮去半周，线圈转动一周时，只在半周内线圈中有电流，但线圈仍然能沿同一方向持续转动，这是因为线圈具有____________________________________。

2021-2022学年安徽省合肥市初三中考物理二模试题学校：__________ 姓名：__________ 班级：__________ 考号：__________注意事项：1．答题前填写好自己的姓名、班级、考号等信息2．请将答案正确填写在答题卡上一、单选题1．甲、乙两个物体都做匀速直线运动,甲的速度大于乙的速度．则甲、乙两物体通过的路程: （）A．甲大于乙通过的路程; B．甲小于乙通过的路程;C．甲、乙通过的路程相等; D．无法判断 .2．宇宙飞船进入预定轨道并关闭发动机后，在太空运行，在这飞船中用天平测物体的质量，结果是 ................................................................................................................................ （）A．和在地球上测得的质量一样大B．比在地球上测得的大C．比在地球上测得的小D．测不出物体的质量3．下列仪器的读数正确的是（）4．下列说法错误的是（）A．直流电动机换向器的作用是每当线圈刚转过平衡位置时改变线圈中的电流方向B．蓄电池充电过程中，把化学能转化为电能C．发电机是根据电磁感应现象制成的D．电能表是测量电功的仪表5．在下述各种情况中，可以得出钢棒原来一定具有磁性的是..................................... （）A．将钢棒的一端接近磁针的北极时，两者相互吸引B．将钢棒的一端接近磁针的北极时，两者相互排斥C．将钢棒的一端接近磁针的北极时，两者相互吸引。

再将钢棒的这一端接近磁针的南极时，则相互排斥D．将钢棒的一端接近磁针的北极时，两者相互吸引。

再将钢棒的这一端接近磁针的南极时，两者仍相互吸引6．下列做法中符合安全用电原则的是（）7．．如图所示，将S闭合后，V1、V2的示数分别为10 V和4 V，则 L1与L2两端的电压分别是（）A．6 V 4 V B.4 V 6 V C.6 V 10 V D.4 V 10 V.8．以下电路图中，电路正确而且有电流通过的是（）9．酒精温度计和煤油温度计能测量的最高温度是不同的，这主要是由于酒精和煤油的（）A．比热容不同B．凝固点不同C．沸点不同D．密度不同10．幻灯机的镜头焦距为f，用它放映时，要在屏幕上成放大的清晰的像，幻灯片与镜头间的距离应该............................................................................................................................. （）A．大于2f B．等于f C．大于f，小于2f D．小于f11．有一段导体，下列措施中能减小其电阻的是（）A．减小导体两端的电压B．减小导体中的电流C．减小导体的横截面积D．减小导体的长度.12．关于声音的传播，下列说法正确的是（）A．声音借助介质以波的形式传播;B．声音的传播可以没有介质;C．声音的传播速度一般随介质的不同而不同;D．声音的传播速度与介质无关而只与温度有关.13．风吹树叶沙沙响，此时的发声体是:（）A．风; B．空气; C．树叶; D．以上都是.二、多选题14．如图所示，为了解白纸和黑纸的吸热性能，小明将质量都是1 kg、初温相同的水分别倒入两个完全相同的瓶中，再用大小、形状和厚薄相同的白纸和黑纸将瓶包起来，然后将两个瓶子放在太阳光下。