高2016级高二下学期半期英语试题
第I卷
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）
请听下面5段对话，选出最佳选项。
1. What is the man doing?
A. Giving advice.
B. Asking for permission.
C. Making an invitation.
2. What will the speakers do next?
A. Stay where they are.
B. Go out for a walk.
C. Go to a coffee shop.
3. Which sport will the man do this weekend?
A. Diving.
B. Swimming.
C. Water skiing.
4. What does the woman want with her coffee?
A. Cream.
B. Milk.
C. Sugar.
5. When should the woman meet with Mr. Jackson?
A. At 2:20 pm.
B. At 2:30 pm.
C. At 2:40 pm. 第二节（共15小题；每小题1.5分，满分22.5分）
请听下面5段对话或独白，选出最佳选项。
请听第6段材料，回答第6、7 题。
6. What are the speakers talking about?
A. A weekend plan.
B. An after-work activity.
C. A night class.
7. How does the woman advise getting to their destination?
A. By boat.
B. By bus.
C. By car.
请听第7段材料，回答第8至10题。
8. How did the woman plan the trip?
A. By making a decision alone.
B. By consulting with her parents.
C. By turning to an agent.
9. What does the man intend to do during the vacation?
A. Work.
B. Study.
C. Travel.
10. What does the woman think of the man?
A. Considerate.
B. Independent.
C. Hard-working. 请听第8段材料，回答第11至13题。
11. How far is it from here to the man's neighborhood?
A. Thirty minutes' drive.
B. Fifteen minutes' drive.
C. Thirty minutes' walk.
12. What does the woman want to eat first?
A. A bar of chocolate.
B. A box of biscuits.
C. A piece of bread.
13. What do we know about the man?
A. He seldom has fast food.
B. He doesn't like Chinese food.
C. He doesn't have much money.
请听第9段材料，回答第14至16题。
14. What is the woman?
A. A collector.
B. A writer.
C. A reporter.
15. Why does the woman know children so well?
A. She has her own children.
B. She once taught in some kindergartens.
C. She likes children and spends much time with them.
16. What are the speakers supposed to do after the conversation?
A. Go fetch some books.
B. Read some stories.
C. Have a rest.
请听第10段材料，回答第17至20题。
17. What was the weather like last Monday morning?
A. Windy.
B. Snowy.
C. Rainy.
18. What did the speaker and her classmates do at school last Monday?
A. They had a discussion.
B. They bought some food.
C. They collected some clothes.
19. How did the cleaners first feel about what the students had done?
A. Happy.
B. Calm.
C. Surprised.
20. What did the students decide to do after such an experience?
A. Do such things whenever they are free.
B. Never throw away wastes any more.
C. Call on more people to do the Help.
第二部分：阅读理解（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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
A
Dear E2 Students,
Our trip on May 25th
After all your hard work on the homework on the history of this city, we have decided to visit the Maritime Museum. Here we are going to have a tour and learn about the sea and rivers in our city. We are going to meet a guide who will show us around the museum. Please make sure you read the information I have given you for homework, as our guide will ask you some questions. We will also get the chance to go inside a 200-year-old trading boat. This boat is very famous. Our trip will finish with a beautiful boat trip along the river.
The trip is from 10:00 am to 2:30 pm. After the trip, your parents can pick you up from school. Here is the day's timetable:
10:00 am: Meet at the front of the school.
10:15 am: Walk to the station to catch the train to the museum.
10:45 am: Meet our guide — visit museum and boat.
11:45 am: Free time to see the rest of the museum.
12:30 pm: Lunch (one hour).
1:30 pm: Meet me at the front of the museum (Don't be late!)
1:45 pm: Boat trip on the river.
2:15 pm: Walk back to school.
Please make sure that you are at school on time. The school is paying for the trip. All you have to bring is your lunch, water, a camera, a pencil or pen, good shoes and an umbrella or coat in case it rains.
Any problems, for example: if you get lost, are sick on the day of the trip or are going to be late for school, please call me on my mobile number: 07993 561992.
See you all then!
Andrew
21. What do we know about the trip?
A. Students will be guided around the museum.
B. Students are going to have lunch on the boat.
C. Students have to wait outside the museum at 10:00 am.
D. Students must bring money for the museum entrance fee.
22. What is the author's purpose of writing this text?
A. To solve a problem.
B. To give information.
C. To make suggestions.
D. To offer an invitation.
23. Who wrote this text?
A. A student.
B. A teacher.
C. A parent.
D. A tour guide.
B
When Robert Hewitt came to the surface, he realised straight away that something was wrong. He'd been diving for crayfish (小龙虾) off the coast of New Zealand with a friend, and had decided to make the 200-metre swim back to shore alone. But instead, strong underwater currents had taken him more than half a kilometre out to sea. “I'm not going to die. Someone will come,” he told himself. But three hours passed and still no one had come for him.
He was now a long way from the coast, but he decided not to try to swim for shore. He felt it was better to save his energy and hold on to his brightly coloured equipment. As night approached, Robert came up with a way to help him survive in the water. To stay warm, he kept himself moving and took short naps (小睡) of less than a minute at a time.
When he woke the next morning, he couldn't believe he was still alive. Using his bright equipment, he tried to signal to planes that flew overhead. But as each plane turned away, his spirits dropped.
Robert woke on the third day to a beautiful blue sky. Now seven kilometres off the coast, Robert decided he had to swim for it. But he quickly ran out of strength. Robert then started to think he might not survive.
On the fourth day, the lack of food and water was really starting to affect him. Half unconscious (失去知觉的), and with strange visions ( 幻觉) going through his head, he thought he saw a boat coming towards him with two of his friends in it. They put him in the boat and he said something like “Oh, how's it going? What are you guy s doing here?” Then he asked them the question:“ Can I have some water?” As they handed him the water and he felt it touch his lips, he knew it was not a vision. He'd been found!
24. What happened to Robert?
A. He was stuck at sea.
B. He lost his best friend.
C. He failed to hunt crayfish.
D. He was hurt by underwater currents.
25. Faced with the problem, what did Robert decide to do at first?
A. Have a good sleep.
B. Try to swim for shore.
C. Find something to eat.
D. Save energy and wait for help.
26. When did Robert start to lose hope?
A. On the third day.
B. At the end of the first day.
C. In the middle of the fourth day.
D. At the beginning of the second day.
27. When Robert was found, he _____.
A. was very excited
B. couldn't believe it
C. was terribly afraid
D. refused to accept the help
C
Bedtime has come and gone, and your 10-year-old is staring hopelessly at his half-finished essay ( 文章). It must be handed in tomorrow, and there's a choice before you: Send him to school with the work undone or give him a little“help”to get the job done. There likely isn't a parent out there who hasn't been faced with the problem: How much help is the right amount?
Think of yourself as a coach, say parenting experts and researchers. Not a kind helper that takes on all the things, but someone who provides the tools (the desk, the pencils, the quiet space), the cheers and the occasional suggestion.
“Be helpful but don't hold the pen,” says Linda Cameron, a professor at the Ontario Institute for Studies in Education and experienced teacher, who researches homework and admits to helping her own now-grown children a little too much on occasion. “You can inspire them and give them snacks.”
And while parents should not give the answers, Dr. Cameron says, they should never send their children to school the next day without a note telling the teacher why their homework isn't done —don't leave it up to your children to give excuses. “I wrote many notes to school, saying we spent much time on it and we need sleep time,” she says.
While our kids are being hurried by forces from all sides, researchers suggest the most powerful often comes from parents, who need to be more sensitive about their expectations and careful about piling on too many scheduled activities.
“Many parents want their kids to be the best and get into H arvard University, so they support more homework without thinking about what it means for their kids,” says Dr. Cameron.
28. What can we infer about the child in Paragraph 1?
A. He is not willing to do his homework.
B. He is a student good at writing essays.
C. He cannot finish the homework by himself.
D. He often does his homework around bedtime.
29. What does Cameron think of her way to help her kids with their homework?
A. It is wrong sometimes.
B. It makes them cheerful.
C. It helps raise their confidence.
D. It makes them tired sometimes.
30. What is the purpose of the note suggested by Cameron?
A. To express parents' thanks to the teacher.
B. To explain reasons for the unfinished work.
C. To ask the teacher to be strict with the child.
D. To encourage the child to work hard at school.
31. Which might be the researchers' advice to parents?
A. Try not to limit their kids' freedoms.
B. Try to know their kids' expectations.
C. Don't give their kids too much pressure.
D. Encourage their kids to enter a university.
32. What is the text mainly about?
A. Why parents should help their kids with studies.
B. How parents should help their kids with homework.
C. Why kids need their parents to help with homework.
D. How kids should ask their parents to help with homework.
D
Technology seems to be advancing daily, but the Pilot by Waverly Labs, the world's first translation earpiece, might be a truly huge step forward for communication.
Though the Pilot is still very much in development, the product will be sold as two earpieces and a smartphone app. When first released, the technology will translate between only five European languages —English, Spanish, French, Italian and Portuguese. The earpiece has microphones to isolate ( 使分离) the speaker's voice, after which the speech will be sent to the app. The app runs speech recognition, machine translation and speech synthesis ( 合成) processes before sending the new speech to the listener's earpiece.
The Pilot is joining other machine translators like Skype Translator and Google Translate, but it's the first to add earpieces to it. The added convenience of these will make the device (设备) useful in several social fields, particularly business and travel.
When the fundraising for the Pilot was launched on Indiegogo in May, 2016, it became obvious just how much the market wanted the product. It reached its US $75,000 goal in 15 minutes, US $1 million in hours and eventually more than US$2 million with the help of over 11,000 supporters. It seemed that the Pilot caught the imagination of many who had seen similar technology in science fiction, like a Forbes writer expressed it in the following quote: “The Waverly Labs Pilot is as close as I've seen to the Universal Translator I was promised by Star Trek when I was a kid.”
Though the Pilot's translation app is available now, the entire earpiece package is planned for delivery in May 2017 at a retail cost (零售价) of US $250 to $300. For now, Waverly Labs is still hard at work improving the Pilot's speed of translation and developing an offline mode. Additional language packages will be developed and sold soon after the product's release so that people everywhere can make use of this amazing device.
33. What do we know about the Pilot by Waverly Labs?
A. It can provide offline translation now.
B. It will be sold together with a smart phone.
C. It can translate between any two languages.
D. It has an app that is responsible for translation.
34. What is the advantage of the Pilot compared with other translators?
A. Its earpieces.
B. Its translation speed.
C. Its microphones.
D. Its translation mode.
35. What can be inferred about the Pilot from Paragraph 4?
A. It was expensive.
B. It was very popular.
C. It was particularly made for kids.
D. It was copied from science fiction. 第二节（共5小题；每小题2分，满分10分）
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Mustangs
The image of horses running free across the plains is a popular symbol of the American West. However, mustangs are not native to the United States, they are descendants (后代) of Spanish horses. 36 Before the Spanish arrived, horses had been extinct (灭绝的) in the New World for about 12,000 years.
37 The word comes from the Spanish word meste?o, meaning “wild.” Mustangs are medium-sized horses. They measure around 56 inches to 60 inches (140 to 150 centimeters). They weigh around 800 pounds (360 kg).
These horses escaped from the Spanish soldiers. And they were also used by native people to fight against the Spanish army. 38 Most of the mustangs that run free across the plains today are of mixed ancestry.
By the end of the 19th century, about two million mustangs ran across the countryside. Farmers began to complain. 39 The mustang population decreased as farmers drove the horses away from the plains. Then, private conservation efforts to protect the mustangs began as early as 1925.
By 1970, fewer than 17,000 mustangs were left. 40 Now, it is estimated that more than 35,000 mustangs are living in the United States today.
A. They prefer to live in Spain.
B. The mustangs were destroying their crops.
C. Mustangs are welcome to the United States.
D. As a result, the United States passed a law that protected the horses.
E. The free horses that live in the western United States are called mustangs.
F. As time went on, the horses gave birth to baby horses and were joined by other horses.
G. When Spanish armies came to the New World in the 16th century, they brought horses
with them.
第三部分：英语知识运用（共两节，满分45分）
第一节：完形填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处
的最佳选项。
I stopped at a gas station the other day to fill up. Then I 41 a young woman with two children standing outside her 42 with the hood (防护罩) open. She seemed 43 on her phone and appeared tearful. After I 44 my tank (油箱), I walked by and asked if everything was 45 . The young woman explained to me that her car battery was 46 and that the kids' father couldn't come within another two hours.
I could have just expressed some empathy (同情) and 47 , but instead I said that
I had jumpercables (跨接引线) and could give them a(n) 48 .
I drove up next to her, popped the hood, 49 the cables and while waiting for the 50 , I gave her and the kids some bottles of water which I had kept in the car 51 it was quite hot outside. I turned on the AC (空气调节系统) and 52 them to get into my car to cool down. 53 , I got her car to start and the young woman was 54 .
She told me that since she moved here from Nevada, 55 had shown her the kindness that she received that day. I told her that I was happy to 56 and that sometimes we all just need a(n) 57 once in a while. The young woman wanted to get my contact information and 58 me. I told her that the best thing she could do was pay it forward and not 59 any repayment. The kids gave me a big“thank you”! And they were 60 to be on their way.
41. A. showed B. realized C. understood D. noticed
42. A. yard B. hotel C. car D. camp
43. A. upset B. shocked C. shameful D. ill
44. A. checked B. filled C. changed D. cleaned
45. A. dangerous B. different C. interesting D. okay
46. A. special B. new C. dead D. strange
47. A. looked around B. pulled out C. walked away D. sat down
48. A. start B. object C. remind D. seat
49. A. replaced B. connected C. threw D. removed
50. A. charge B. warning C. agreement D. opinion
51. A. but B. as C. if D. until
52. A. expected B. ordered C. sent D. invited
53. A. Besides B. Therefore C. Finally D. However
54. A. disappointed B. proud C. curious D. grateful
55. A. anybody B. somebody C. nobody D. everybody
56. A. debate B. help C. drive D. call
57. A. hand B. experience C. practice D. service
58. A. praise B. repay C. support D. trust
59. A. worry about B. put off C. set aside D. give up
60.A. bored B. tired C. careful D. happy
第二节（共10 小题；每小题1.5 分，满分15分）
阅读下面材料，在空白处填入适当的内容（1 个单词）或括号内单词的正确形式。Chinese tea culture
China is the native place of tea where tea is grown earliest and processed with the__61___ (fine) method and drunk in the largest amount in the world.
Originally, tea ____62 ____ (use) as a kind of medicine instead of a drink. Later as the ancient Chinese explored further into the features of tea, they separated it from herbs ( 药草) and made it into a kind of drink and ____63____ (gradual) it developed into Chinese tea culture.
Records show that the custom of tea drinking ____64____ (start) in the Western Han Dynasty and during the Dynasties of Wei, Jin and the Northern and Southern Dynasties, drinking tea already became __65 ______ fashion for people with high ___ 66_____ (society) position. The Tang Dynasty was the mature ( 成熟的) period of Chinese tea culture. At that time it was a custom ___67 _____ (drink) tea. And people tried out even more ___68 _____ (way) to drink tea. In the Song Dynasty, tea planting and trade were on the increase and the technique of making tea was greatly improved. By the Yuan Dynasty, drinking tea had become something very common in everyday life. ___69_____ the Ming and the Qing Dynasties, people drank tea in almost the same way ____70 ____ we do today.
第II卷
第四部分：写作（共两节，满分35分）
第一节：短文改错（共10小题；每小题1分，满分10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10 处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11 处起）不计分。
The other day I went to the party and met up with a lady I knew her a few months ago. The lady, what was said to be difficult to get along with, were seated next to me. I made up my mind to be kindness and fun. It worked well, but we had a lovely chat. Before she leave the party, she even came and said goodbye for me with a smile. At that moment I realized no one in the world would refuse to make friend with a nice person. I believe that when we meet next time, it will like meeting an old friend. 第二节：书面表达（满分25分）
假定你是李华，你英国网友Paul对中国文化非常感兴趣，请你给他写一封邮件推荐《中国文化掠影》（Glimpses of Chinese Culture）一书。内容包括：
1.该书以短文形式介绍中国文化发展史；
2. 共有25个话题，涉及历史、经济、文化和科技等多个领域；
3. 你打算给他邮寄一本。
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。
参考词汇：经济 economics, 科技 science and technology
Dear Paul,
________________________________________________________________________________ _____________________________________________________________________
Yours,
Li Hua
高二下半期英语答案 [参考答案]
1-5 CCBAB 6-10 ABCAB 11-15 AACBC
16-20 CAACB 21-25 ABBAD 26-30 ABCAB
31-35 CBDAB 36-40 GEFBD 41-45 DCABD
46-50 CCABA 51-55 BDCDC 56-60 BABAD
高二期中考试化学试卷 2020.5 可能用到的相对原子质量：H—1 He—4 C—12 O—16 Na—23 Fe—56 一、选择题（本题共25小题，每小题2分，共50分。每小题列出的四个备选项中只有一个是符合题目要求的，不选、多选、错选均不得分） 1．下列物质，不属于天然有机物的是() A．蛋白质B．油脂C．棉花D．酚醛树脂 2．下列物质属于强电解质的是（） A．NH3B．NaCl溶液C．Na2SO4D．硬脂酸 3．下列物质属于酸性氧化物的是（） A．Al2O3B．Na2O2C．NO D．CO2 4．电离方程式书写错误的是（） A. HCl = H+ + Cl- B. KClO3 = K+ + ClO3- C. CH3COOH = H+ +CH3COO- D. HCO3- + H2O ?CO32- + H3O+ 5．下列表示物质的化学用语正确的是() A．硝基苯的结构简式NO2 B．葡萄糖的实验式为CH2O C．甲烷分子的比例模型D．羟基的电子式O H 6．下列说法正确的是() A．19世纪初，化学家维勒提出了有机化学的概念 B．红外光谱图的研究可以确定有机物的相对分子质量 C．同位素示踪法可以研究反应的历程 D．铜丝燃烧法可定性确定有机物中是否含有硫、氮、氯、溴等元素 7．关于煤、石油、天然气三大化石燃料的说法正确的是（） A．煤是由无机物和有机物组成的，其中含苯、甲苯等有机物 B．石油通过裂化可以得到气态短链烃 C．天然气和沼气的主要成分都是甲烷，都是不可再生能源 D．液化天然气(LNG)和罐装液化石油气(LPG)主要成分都属于烃类 8．下列物质一定是纯净物的是（） A．C B．C2H4Br2 C．C6H12O6D．CH4O 9．下列各组物质互为同系物是（） A．CH3—CH CH2 与B．与 OH C．甲苯和邻二甲苯D．CH2CH—CH CH2和CH3CH2CH2C≡CH 10．下列除杂（括号内的为杂质）方法正确的是（） A．苯（己烯），加入浓溴水后分液B．硝基苯（NO2），加入NaOH溶液后分液C．溴苯（溴），用KI溶液除去D．乙烷（乙烯），通H2在一定条件下反应11．设N A表示阿伏伽德罗常数的值，下列说法正确的是（） A．1L 0.1mol/L盐酸中含有HCl分子0.1N A B. 常温常压下，22.4L H2的分子数小于N A C. 1mol SO2在催化剂作用下与足量的O2反应，转移电子数为2 N A D. 常温常压下，4g氦气中氦原子个数为2 N A
高二下学期期中考试语文试题 注意事项： 1．本试卷分第Ⅰ卷(选择题)、第Ⅱ卷(综合题)和答题纸三个部分，共计150分，考试时间为150分钟。 2．答卷前，考生务必将自己的学校、班级、姓名、考号填写在答题纸指定处。 第Ⅰ卷(选择题，共39分) 一、（24分） 1.下列词语中加点的字，读音有两处错误的一组是（） A．俨．（yǎn）然熟谙．（ān）呱呱．（guā）坠地锵．（qiāng）鸣金石B．敕．（chì）造褒．（bāo）贬洗洗涮涮．（shuā）掎．（jǐ）角之势 C．贫窭．（lǚ）洗．（xiǎn）马有条不紊．（wěn）盥．（guān）洗栉笈D．宫绦．（tiāo）垓．（gāi）心天理昭．（zhāo）然敛声屏．（bǐng）气2．下列各组词语中，出现错别字最多的一组是（） A．账簿放诞无礼面面相觑自惭形秽 B．誊写淹淹一息摇摇欲坠得意洋洋 C．蹩脚不肖子孙蘖根祸胎老态龙肿 D、陪偿愤世嫉俗兵慌马乱凭心而论 3．填入下列各句空缺处的词语，最恰当的一项是（） ①住宅的寒伧，墙壁的，家具的破旧，衣料的粗陋，都使她苦恼。 ②忽见华大妈坐在地上看她，便有些踌躇，惨白的脸上露出的颜色。 ③他到警察厅去，到各报馆去，悬赏玛蒂尔德丢失的项链。 ④他的一曲激越、高昂的独唱，成了这台晚会的，帷幕徐徐落下，观众仍不肯离去。
A．黯淡羞赧招寻压轴戏B．黑暗羞愧招领压轴戏 C．黯淡羞愧招寻压台戏D．黑暗羞赧招领压台戏4．下列各句中使用的成语，最恰当的一项是（） A、蒙古一位地质工作者的嗅觉十分奇特，近30年来，他用鼻子探测出800多眼地 下泉水，而且屡试不爽 ．．．．。 B、何梦吉与三十年前的小学同学张永贵昆明湖畔萍水相逢 ．．．．，他们高兴得热泪盈眶。 C、为保护环境，政府取缔了污染严重的造纸厂，一时间洛阳纸贵 ．．．．，用纸户纷纷抢购。 D、这伙盗贼真是猖狂，竟于犯罪现场坐地分赃 ．．．．，结果被及时赶到的警察全部擒获。5．下列各句中，没有语病的一句是（） A．古老的智慧、经典的知识尽管难以具有实际的功效，但它具有益人心智、怡人性情、改变气质、滋养人生的价值不可小视。 B．一条广告的好坏，不仅在于文字的精致，构思的巧妙，还要考虑群众的文化背景和历史传统。 C．“神舟”五号为了确保航天员的安全，对飞船发射、飞行、返回每个阶段可能出现的情况都做了精心设计，准备了应对预案。 D．我国要在未来三到五年内建成一批具有国际竞争力的大企业集团，就必须探索建立组织配置与市场化配置相结合的人才选用机制，加大市场化选聘力度。 6．下列各句中使用的标点符号，正确的一项是（） A．“下次决不了，决不了！”箍桶匠叫着：“你瞧就是，可怜的太太！” B．因为在妇女，美丽、丰韵、妩媚，就是她们的出身，天生的聪明，优美的资质，温柔的性情，就是她们惟一的资格。 C．另换了三四个衣帽周全十七八岁的小厮上来，复抬起轿子。 D．古典小说能够做到“戚而能谐，婉而多讽。”（鲁迅语），特别是对于反面人物，高明的作者更要达到“无一贬词而情伪毕露”的艺术水平。
江苏省南通市高二上学期数学期中考试试卷 姓名:________ 班级:________ 成绩:________ 一、填空题 (共14题；共15分) 1. （1分） (2020高三上·静安期末) 若直线和直线的倾斜角分别为和则与的夹角为________. 2. （1分） (2017高一下·赣榆期中) 圆x2+y2﹣2x+4y+1=0的面积为________． 3. （1分） (2017高二上·苏州月考) 在正方体中，与AA1垂直的棱有________ 条． 4. （1分） P是抛物线y=x2上的点，若过点P的切线方程与直线y=-x+1垂直，则过P点处的切线方程是________ 5. （1分）圆心在x轴上，半径为1，且过点（2，1）的圆的标准方程为________ 6. （1分） (2018高二上·遵义月考) 一个圆柱的侧面展开图是一个正方形，这个圆柱的表面积与侧面积的比是________ 7. （1分） (2017高一下·鸡西期末) 直线与直线的距离是________． 8. （1分） (2016高二上·苏州期中) 已知平面外一条直线上有两个不同的点到这个平面的距离相等，则这条直线与该平面的位置关系是________． 9. （1分）已知，，在轴上有一点，使的值最小，则点的坐标是________ 10. （1分）(2017·赣州模拟) 某多面体的三视图如图所示，则该多面体外接球的体积为________．
11. （1分）如果x，y满足4x2+9y2=36，则|2x﹣3y﹣12|的最大值为________． 12. （1分）(2017·揭阳模拟) 已知一长方体的体对角线的长为10，这条对角线在长方体一个面上的正投影长为8，则这个长方体体积的最大值为________． 13. （1分）(2019·上饶模拟) 已知点Q（x0 ， 1），若上存在点，使得∠OQP＝60°，则的取值范围是________． 14. （2分）(2018·丰台模拟) 已知是平面上一点，，． ①若，则 ________； ②若，则的最大值为________． 二、解答题 (共6题；共60分) 15. （10分）如图所示，在直角梯形ABCD中，AB∥CD，∠ABC=90°，CD=BC=1，点E为AD边上的中点，过点D作DF∥BC交AB于点F，现将此直角梯形沿DF折起，使得A﹣FD﹣B为直二面角，如图乙所示． （1）求证：AB∥平面CEF； （2）若AF= ，求点A到平面CEF的距离．
2. 在某些月饼的包装盒内有个小纸袋，将小纸袋打开，可看到灰黑色粉末，其中有些已变成 棕褐色。将灰黑色粉末溶于盐酸，溶液呈浅绿色，滴入几滴氯水，溶液变成棕黄色。以下结论不正确的是 A.该灰黑色粉末用作抗氧化剂 C.小袋中可能装有活性铁粉 B.小袋中的原装粉末是 Fe 2 O 3 D.该灰黑色粉末不可食用 中燃烧,放出黄色火花 ③燃烧后得白色固体 ④燃烧时火焰为黄色⑤燃烧后生成浅黄色固体 2018 学年华二高二上期中考试试卷 相对原子质量： H-1 C-12 N-14 O-16 Na-23 Mg-24 Al-27 S-32 Cl-35.5 K-39 Ca-40 A g-108 B r-80 Fe-56 Cu-64 Zn-65 Ba-137 一、选择题 1. 历史上，铝、钛、铁、铜四种金属，最早使用的是 A.铜 B.铁 C.钛 D.铝 物质. A.②⑤ B.①②③ C.①④⑤ D.④⑤ 4. 下列离子方程式书写正确的是 A.碳酸钙与盐酸反应：CO 32- +2H+→CO 2↑+H 2O B.氯化铁溶液中加入铁粉：Fe 3+ + Fe→2Fe2+ D.向硫酸中加入 Ba(OH)2 溶液：Ba 2++2OH -+2H++SO 42-→BaSO 4↓+2H 2O 5. 以 N A 表示阿伏伽德罗常数的值，下列说法正确的是 A.常温下，5.6gFe 与足量的 Cl 2 反应，失去的电子数为 0.2N A B.标准状况下，22.4L 水中含有 N A 个水分子 C. 常温下，1L 0.1mol/LAlCl 3 溶液中含有 Al 3+ 个数小于 0.1N A D. 铝和氢氧化钠溶液反应，每生成 0.3molH 2，被还原的水分子数目为 0.2N A 6. 纯碱和小苏打是厨房中两种常见的用品,下列区分它们的方法正确的是 A. 分别用炒锅加热两种样品,全部分解挥发,没有残留物的是小苏打 B. 用洁净铁丝蘸取两种样品在煤气火焰上灼烧,火焰颜色发生明显变化的是小苏打 C. 先将两种样品配成溶液,分别加入石灰水,无白色沉淀生成的是小苏打 D. 用两只小玻璃杯,分别加入少量的两种样品,再加入等量的食醋,产生气泡快的是小苏打 C.溴化亚铁溶液中通入过量氯气：2Fe 2++2Br -+3Cl 2→Br 2+2Fe 3++6Cl - 3. 取一小块金属钠,放在燃烧匙里加热,下列实验现象描述正确的是①金属先熔化 ②在空气
2018年普通高等学校招生全国统一考试 英语(北京卷) 第一部分:知识运用(共两节,45分) 第一节单项填空(共15小题;每小题1分,共15分) 从每题所给的A、B、C、D四个选中,选出可以填入空白处的最佳选项, 并在答题卡上:将该项涂黑。 例： it's so nice to hear from her again＿＿，we last met more than thirty years ago. A. what's more B. That’s to say C. In other words D. Believe it or not 答案是D。 1.-Hi, I'm Peter. Are you new here? I haven't seen you around？ -Hello, Peter. I'm Bob. I just＿＿on Monday. A. start B. have started C. started D. had started 2. ＿＿we don't stop climate change, many animals and plants in the world will be gone. A. Although B. While C. If D. Until 3. ＿＿along the old Silk Road is an interesting and rewarding experience A. Travel
B. Traveling C. Having traveled D. Traveled 4. Susan had quit her well-paid job and ＿＿as a volunteer in the neighborhood. when I visited her last year A. is working B. was working C. has worked D. had worked 5. She and her family bicycle to work, helps them keep fit A. which B. who C.as D. that 6. During the Mid-Autumn Festival, family members often gather together＿＿a meal, admire the moon and enjoy moon cakes. A. share B. to share C. having shared D. shared 7. China's high-speed railways from 9,000 to 25,000 kilometers in the pastfew years. A. are growing B. have grown C. will grow D. had grown 8. In any unsafe situation, simply＿＿the button and a highly-trained agent will get you the help you need. A. press
高二下学期期中考试物理试题 1.本试卷分Ⅰ卷、Ⅱ卷(答卷)，共三大题22小题，时间90分钟，满分100分 2.所有答案均应按规定填写在Ⅱ卷的对应位置上。 （命题人：陈卫国；审题人：吴杰夫） Ⅰ卷 一、选择题(16小题，共44分。1~10题为单选题，每小题2分；11~16为多选题，每小题 4分，全部选对的得4分，对而不全的得2分，有选错或不答的得0分。) 1．物理学的基本原理在生产和生活中有着广泛的应用，下面列举的四种器件中,在工作时利用了电磁感应现象的是( ) A．回旋加速器 B．质谱仪 C．发电机 D．示波器 2．远距离输电时，在输送电功率和输电线电阻一定的条件下，输电线上损失的电功率( ) A．与输电电压的平方成正比 B．与输电电压的平方成反比 C．与输电电压成正比 D．与输电电压成反比 3．法拉第电磁感应定律可以这样表述：闭合电路中感应电动势的大小( ) A．跟穿过这一闭合电路的磁通量成正比 B．跟穿过这一闭合电路的磁感应强度成正比 C．跟穿过这一闭合电路的磁通量的变化量成正比 D．跟穿过这一闭合电路的磁通量的变化率成正比 4. 如图所示，闭合线圈上方有一竖直放置的条形磁铁，磁铁的N极朝下， 当磁铁向上运动时（） A．线圈中感应电流的方向与图中箭头方向相同，磁铁与线圈相互吸引； B．线圈中感应电流的方向与图中箭头方向相同，磁铁与线圈相互排斥； C．线圈中感应电流的方向与图中箭头方向相反，磁铁与线圈相互吸引； D．线圈中感应电流的方向与图中箭头方向相反，磁铁与线圈相互排斥； 5．如下图所示，属于交流电的是（） 6．下列说法中正确的有（） A．只要闭合电路内有磁通量，闭合电路中就有感应电流产生 B．穿过螺线管的磁通量发生变化时，螺线管内部就一定有感应电流产生 C．若线框不闭合，穿过线圈的磁通量发生变化时，线圈中没有感应电流和感应电动势D．若线框不闭合，穿过线圈的磁通量发生变化时，线圈中有感应电动势，没有感应电流7．如图所示，A1和A2是完全相同的灯泡，线圈L的电阻可以忽略， 下列说法中正确的是（）
高二下学期期中考试总结 紧张的考前复习，压制神经的考试，下考场后的议论纷纷，有人欢喜有人忧。全县统考结束后顿时感受轻松了不少，暂且别去说考试成绩的好坏，至少这种感受让人感到发自心里的放纵。随后而来的便是对考试成绩的焦急等待和新一轮学习的开始...也许以我这次的考试成绩并别能说成是优异，能够说算个中等吧。但关于我个人来说这也是一具进步，尽管有几科成绩别尽人意。下面就仔细分析分析吧。 先说说英语和历史吧。总体来说进入高中以来我的英语成绩呈现直线下滑趋势，这次也毫别出意外的只考了87分。我很清晰的知道考低分的原因:寻常老师让默写单词时别写，让记语法时别记。一到考试的时候就开始发愁，特别是在做单项挑选题的时候，单词疑惑什么意思感受哪个选项都对，语法疑惑如何运用感受哪个选项基本上答案，结果惟独乱猜了，这次考试在这方面就吃了大亏了。历史这科自我感受依然挺简单的，因为上次考试还得了80多分呢，我想的是这次至少能够考85分的，结果特别完美的验证了一具词语:眼高手低。成绩下来只考了66分。尽管说这次全校历史成绩都有所下滑，但是得高分的依然有的。这次历史成绩给了我别小的打击，更何况老班是算是由历史老师，的确有点别给他面子了。寻常历史学的还挺卖劲的，对历史也是有浓厚的兴趣的，可考试怎么说是考试，后面的非挑选题都是基本上只得了一半的分，未来可得注意了。再说说政治吧。说句实话《日子与哲学》这一册的知识比较难理解，寻常的学习也不过死记，全然别太理解其中的含义，寻常做练习题也别注意总结，结果考试的时候后面的咨询答题都是是胡写的，想到哪一点就写哪一点，没有头绪没有要点。有因必有果:有两个大题别得分，有一大题只得了一分，在整张卷子上拉了将近30分，尽管挑选题做的还能够，但分数也都是定格了，只考了59分。看看分数再想想自己在课堂上的表现:睡觉，发呆...特别是老师说练习题的时候都是是别听的，以至于对张老师说的咨询题分析、做题思路都毫无印象，考试的时候为所欲为，乱答一气。如今终于知道自己有多笨了，真懊悔。 数学和语文成绩小有进步。语文就别用说了，数学可是个难题。说句实话，数学有25分的挑选题别是我自己做的，后面的大题自己苦心专研的。自认为很简单的，结果很别爽的有两道大题别得分。挑选题在别人的热心帮助下错了两道，还别错。事实上，这段时刻可没少在数学上下功夫，终于功夫别负有心人得了92分。语文得了115分，我最开心的是语文没有低于110分过，但成绩还有待更进一步。最后说说地理吧。事实上高一上学期学自然地理的时候，我的地理成绩依然一踏糊涂，但在这种极其惊险的事情下，我依然毅然挑选了文科。为了补瘸腿科，我对地理学习也分外的努力。高一下学期是人文地理，比较简单，渐渐的我的地理成绩也有所上升。事实上能有如此的成绩和地理老师和老师是分别开的。刚开始学习地理的时候我别敢向老师咨询题，也从来没有咨询过。高一下学期和老师开始带我们班地理之后这种事情才有所改变，渐渐的也就没有什么胆怯的了。时刻长了对地理也产生了浓厚的兴趣。这对我将来的学习产生了很大的妨碍。这次地理成绩还算理想，考了83分。我想这与我平时的训练是分别开的，特别是考试前对基础知识的复习和对往常做过的练习题的复习，但是挑选题错的太多，错了5道，都是好基本上寻常老师说过的，真别应该。总体上来说，这次考试题别算太难。但由于自己的粗心大意依然吃了很多亏。未来一定要注意。 别管如何样，这次考试差不多结束了，成绩的好坏也差不多成了定局。但它只能代表过去，别能对自己的以后做判决。这次考试给了我很大的启示，也让自己看到了自己的缺点与别脚，有了这次的考试经验，将来我一定注意改正自己在学习中的缺点，弥补自己的别脚，争取再创一具更好的成绩！ 命运如同手中的掌纹，不管再如何蜿蜒但终究在你手中。要知道，没有等出来的漂亮，惟独拼出来的辉煌！
高二上学期数学期中考 试题及答案 Document number【980KGB-6898YT-769T8CB-246UT-18GG08】
江苏省东海县08-09学年高二期中考试 数学试题 用时:120分钟 满分:160分 一、填空题：本大题共14小题,每小题5分,共计70分.不需写出解答过程,请把答案直接填写在题中横线上. 1.采用系统抽样从容量为2000的总体中抽取一个容量为100的样本，采用随机的方式将总体中的个体编号为1，2，3，…，2000，并在第一段中用抽签法确定起始号码为12，则选入样本的个体的最大编号为 . 2.命题“矩形的对角线相等”的否定 是 . 3.根据左下图所示的伪代码,可知输出的结果 4.右上图为函数()y f x =根据输入的x 值计算y 流程图,则()y f x =的解析式为()f x = . 5.已知函数2()cos f x x x =-,对于ππ22?? -???? ，上的任意12x x ,,有如下条件： ①12x x >；②22 12x x >；③12||x x >.其中是12()()f x f x >的充分条件是 (将充分条件的序号都填上) . 6.设有一个正方形网格，其中每个最小正方形的边长都为5cm.现用直径为2cm 的硬币投掷到此网格上，则硬币落下后与格线没有公共点的概率是 . 7.在5张卡片上分别写有数字1，2，3，4，5，从这5张卡片中随机抽取3张，则取出的3张卡片上的数字之和为奇数的概率为 .
8.函数()a f x x x =+(a 为常数)在[2,)+∞是单调增函数的充要条件是 . 9.已知线段AB =3cm,线段CD =5cm,在点,C D 之间随机选取一点M ,将线段CD 分成两段,CM MD ,则线段AB ,,CM MD 能构成一个三角形的三边的概率等于 . 10.命题“钝角的余弦值是负数”的逆否命题 是 . 11.用4种不同颜色给如图所示的3个矩形随机涂色，每个矩 形 只涂一种颜色，则3个矩形颜色都不同的概率为 . 12.函数21 ()(1)2 x f x x x x -=≥++的值域为 . 13.某校高二年级有100名学生参加某项综合能力测试，他们的成绩统计如下： 则这100名学生成绩的方差为 2分. 14.某县中学教师与小学教师人数之比为1∶3；在中、小学全体教师中，女教师占%；在中学教师中，女教师占40%.为了解不同性别教师的健康状况，现要用分层抽样的方法从该县中、小学教师中抽取一个容量为200的样本，那么小学女教师应抽 人. 二、解答题：本大题共6小题,共计90分.解答应写出文字说明、证明过程或演 算步骤. 15.(本题满分14分) 某种产品有三个等级：一等品、二等品、次品，其中一等品和二等品都是正品.现有7件该产品，从中随机抽取2件来进行检测. (1)若7件产品中有一等品4件、二等品2件、次品1件. ①抽检的2件产品全是一等品的概率是多少 ②抽检的2件产品中恰有1件是二等品的概率是多少 (2)如果抽检的2件产品中至多有1件次品的概率不小于5 7 ，则7件产品中次品 至多可以有多少件
高二期中考语文试卷 共150分，用时150分钟 第Ⅰ卷（阅读题共70分） 一、论述类文本阅读（9分，每小题3分） 阅读下面的文章，完成后面题目。 我们的时代已不容置疑地进入了“数字时代”，数字技术瞬息万变，进入了我们现实的公共生活和私人生活领域。当代影视、摄影、广告的图像泛滥所形成的“视觉文化转向”，提供给大众的视觉形象是无限复制的影像产物，从而对大众的日常生活形成包围。消费型社会更加强化了建立在影像基础上的文化，越来越多的图像加速“挪用现实”，社会几乎被图像“绑架”。复制技术让影像的生产和消费不仅高度繁荣，而且正越来越自主化。传统社会，人们欣赏艺术是主体的自觉行为，在数字时代对数字技术所批量复制生产出来的视觉形象，人们是因拟像世界的围剿而不得不去关注与传播。这些视觉形象是符号，而不是传统的艺术。艺术审美的韵味被数字时代拟像世界的“奇观”所带来的震撼悉数替代，人们逐渐习惯于被动地为图像所逼迫，而不再有意识地、自为地去选择欣赏的对象。随之而来的便是即时审美的冷漠与疲劳。 图像作为表述人类对自身和世界的欲望映像，强化了人类根深蒂固的自恋情结——人类的自身经验被最大程度地转化为满足人类意愿的观看的对象。数字时代既能生产图像，又能消解图像（泛滥的PS技术便大大提升了图像的虚拟化程度，将图像随意拼贴、篡改、美化）。于是各类恶搞、戏仿、游戏、虚无主义、道德主题等杂糅在一起，图像的表述失去目标与信念，人成为空洞的能指。图像和信息符号正在成为我们了解现实的主要来源。数字时代，我们生活在一个被复制和仿造了的世界中，对真实的证明是那么不可能，因为我们所掌握的一切都只是复制品而已。我们无时无刻不被广告、影视、信息爆炸所笼罩着，并置身于“超现实”之中：虚饰成了现实的核心，艺术因此表现为无处不在。艺术不再是单独的、孤立的、高悬于现实之上的精致的精神活动，艺术被符号统领，泛化为日常的一种基本审美和即时审美。 数字时代，技术作为“物”的存在逻辑已经让位于“物与人相互融合”的逻辑，即技术的人文性。随着人类对于机器以及对于机器与人类之间变化着的关系的认识不甚了了，人类对机器产生恐惧与敌意。事实上，我们不断与机器分享空间，并与之相互依赖。数字时代，网络似乎在构筑人类与机器的边界，但又不断让技术更吸引人，让人与机器更加唇齿相依。 艺术主体由此经历了一个解构与重构的过程。机器和技术的介入，使传统艺术家的中心和霸权地位被严重消解与解构，数字化网络使艺术家的中心身份模糊。发送者和接收者、生产者和消费者、统治者和被统治者之间的绝对界限已不复存在。 比特打造的“数字化境遇”为人类诗意栖居营造了一个多姿多彩的超现实氛围，逐渐走向成熟的虚拟现实技术，使得日常生活审美化和艺术审美的日常生活化之间，不再有不可逾越的鸿沟，人的本质力量的全面发展和自由表现也逐渐成为可能。“数字人格”“技术理性”使主体变得越来越自由，也变得越来越肤浅与模糊。艺术本来是虚实相映的，文化则来自虚幻形象和客观现实之间的相互作用，然而在大众文化盛行的数字时代，却出现了用虚幻的形象代替一切现实、用形象化生存代替真实生存的趋势。
2018成人学士学位英语考试试题 I. Reading comprehension Passage 1 Since its founding in 1948, McDonald's has grown from a family burger (汉堡包) stand to a global fast-food chain, with more than 30,000 locations in 118 countries. With 58 million daily customers worldwide, McDonald’s is now s o ubiquitous around the globe that The Economist publishes a global ranking of currencies' purchasing power based on the prices charged at the local McDonald’s, called the Big Mac Index (巨无霸指数).That’s not to say that every nation carries the same m enu i tems: choices vary widely depending on location. Some Asian locations serve fried shrimp in a Big Mac roll, while McDonald’s in India doesn’t serve beef at all, relying instead on burgers made from vegetables, rice and beans. Not everyone in the world has been happy to greet Ronald McDonald when he moves to town. Many s ee McDonald's as a symbol of American economic and cultural chauvinism (沙文主义), and European nations in particular have viewed American-style fast food as an insult to their national food. A French farmer, Jose Bove, became something of a national hero in 1999 after he and a group of people destroyed a McDonald's under construction to protest globalization and "bad food." The next year, a bomb e xploded in a French McDonald’s, killing a 27-year-old employee. (76) (76)No one claimed responsibility. But regardless of whether you like their food or their policies, McDonald’s is still widely seen as one of the true pioneers of peaceful globalization. 1. According to the passage, which of the following statements is NOT TRUE. A. McDonald's was founded in 1948. B. McDonald’s has opened its restaurants in every city of the world. C. McDonald’s has over 30,000 locations in the world now. D. McDonald’s was very small in scale in the beginning. 2. The word ubiquitous in Paragraph 2 is most likely to mean ____. A. very crowded B. very dean C. existing everywhere D. occurring frequently 3. From Paragraph 2, we can conclude that ____. A. McDonald’s designs its menu to suit the local people B. millions of young adults got their first job with McDonald’s C. the McDonald’s menu sticks to old-fashioned favorites such as the Big Mac D. the low prices McDonald’s bring tens of millions of people through its doors every day 4. What did Jose Bove and his people do in 1999 to protest against McDonald's? A. They organized a strike. B. They protested outside a McDonald’s. C. They refused to go to a newly-built McDonald’s. D. They destroyed a McDonald’s under construction. 5. In ____, an employee died in a fatal bomb attack on a McDonald’s restaurant in France.
2016—2017学年度高二下学期期中考试 物理(理科)试题 温馨提示： 1．本试题分为第Ⅰ卷、第Ⅱ卷和答题卡。全卷满分110分，其中含附加题10分。 2．考生答题时，必须将第Ⅰ卷上所有题的正确答案用2B 铅笔涂在答题卡上所对应的信息点处，答案写在Ⅰ卷上无效，第Ⅱ卷所有题的正确答案按要求用黑色签字笔填写在答题纸上。 3．考试结束时，将答题纸交给监考老师。 第Ⅰ卷 一、单选题：（本题共8小题，每小题4分，共32分。在每小题给出的四个选项中，只有一个选项符合题目要。) 1．人从高处跳下，与地面接触时双腿弯曲，这样是为了（ ） A ．减少人落地时的动量 B ．减少此过程中人的动量的变化量 C ．减少人所受合外力的冲量 D ．减小地面对人的冲力 2．一发电机向远处的用户送电，已知输送电功率为P ，输送电压为U ，输电线电流为I ，输电线电阻为R ，输电线上损失的功率为P Δ，则下列说法正确的是（ ） A ．由 R U P 2 =得，输送电压越大，输电线上损失的功率越大。 B ．由R U P 2 =得，为了减少输电线上的功率损失，可采用低压输电。 C ．由R I P 2=Δ得，输电线电流越大，输电线上损失的功率越大。 D ．由欧姆定律得，输电线上电压、电流、电阻之间的关系满足等式IR U =。 3．将一多用电表的选择开关置于倍率合适的欧姆档，欧姆调零后将红黑表笔分别与一金属热电阻、负温度系数的热敏电阻和光敏电阻两端相连，下面有关欧姆表读数说法正确的是（ ） A ．如果给金属热电阻加热，则欧姆表的读数变小
B ．如果给热敏电阻加热，则欧姆表读数变大 C ．如果将光敏电阻用一黑布包住，则欧姆表读数变大 D ．以上说法都不对 4．把一支枪水平固定在车上，小车放在光滑的水平面上，枪发射出一颗子弹，关于枪、子弹、小车，下列说法正确的是（ ） A ．枪和子弹组成的系统动量守恒 B ．枪和小车组成的系统动量守恒 C ．三者组成的系统动量近似守恒。因为枪弹和枪筒之间的摩擦力很小，使系统动量变化很小 D ．三者组成的系统动量守恒。因为系统只受重力和地面支持力这两个外力作用，并且两个外力的合力为零 5．某一交流发电机产生的正弦交流电电动势为)(50sin 2100=V t πe ，不计发电机线圈内阻，由此可知( ) A ．此交流电每秒钟方向改变25次 B ．在s t 03.0=时，穿过交流发电机线圈的磁通量最大 C ．在s t 02.0=时，交流发电机线圈平面与中性面垂直 D ．若此交流电给一个100Ω的电阻供电，则此电阻消耗的电功率为100W 6．如图所示理想变压器的原副线圈的匝数比10:1=:21n n ，电阻Ω2=R ，现给原线圈接入如右图所示的正弦交流电压，则下列说法正确的是（ ） A ．副线圈电流的频率为0.2HZ B ．电压表的读数为10V C ．电流表A 1 的示数为50A D ．电流表A 2的示数为A 25 7．满载砂子的小车总质量为kg 3 10×2，在光滑水平面上做匀速运动，速度为s m 1。在行驶途中有质量为kg 400的砂子从车上漏掉，则砂子漏掉后小车的速度应为( ) A ．s m 1 B ．s m 25.1 C ．s m 5 D ．s m 8.0 8．将如图所示的甲乙两种交流电压分别加在同一个定值电阻上，经过相同时间，产生的热量比是（ ）
新泰一中北校高二下学期期中考试化学试题 注意事项 1.答第Ⅰ卷前，考生务必将自己的姓名、考号、考试科目涂写在答题卡上。 选择题选出答案后，用2B 铅笔把答题卡上对应题目的答案标号涂黑，如 需改动，用橡皮擦干净后，再选涂其他答案标号，不能答在试卷上。 2. 第Ⅱ卷所有题目的答案，必须用0.5毫米黑色签字笔答在答题卡规定的 区域内，在试卷上答题不得分。 第Ⅰ卷 （选择题 共50分） 一、 选择题（包括20小题，每题只有一个选项符合题意,1-10题每题2分， 11-20题每题3分，共50分） 1、下列分子式表示的物质一定是纯净物的是 （ ） A ．CH 4O B ．C 7H 8O C ．C 2H 4Cl 2 D ．C 5H 10 2．有机化学知识在生活中应用广泛，下列说法不正确的是（ ） A ．甘油加水作护肤剂 B ．医用酒精的浓度为75% （体积比浓度） C ．福尔马林是甲醛的水溶液，具有杀菌防腐能力，因此可以用其保鲜鱼肉等食品 D ．苯酚有毒但可以制成药皂，具有杀菌消毒的功效 3.下列文字表述与化学反应方程式对应正确的是( ) A.溴乙烷中滴入AgNO 3溶液检验其中的溴元素：Br -+Ag + = AgBr↓ B.用醋酸除去水垢：CaCO 3 + 2H + === Ca 2+ + H 2O + CO 2↑ C.实验室用液溴和苯在催化剂作用下制溴苯：+ Br 2 FeBr 3 Br + HBr D.聚丙烯的结构简式为：CH 2-CH 2-CH 2 4. 有机化合物A 只由C 、H 两种元素组成且能使溴水褪色，其产量可以用来衡量一个国家石油化学工业的发展水平。A 、B 、C 、D 、E 有下图所示的关系。则下列推断不． 正确的是（ ） A ．鉴别A 和甲烷可选择酸性高锰酸钾溶液 B ．B 、D 均能与金属钠反应 C ．物质C 的结构简式为CH 3CHO D ．B ＋D→ E 的化学方程式为：CH 3CH 2OH ＋CH 3COOH ――→浓硫酸 △CH 3COOC 2H 5 5．下列各有机物的分类或命名正确的是（ ）
2020-2021高二数学上期中试题含答案(5) 一、选择题 1．设样本数据1210,,,x x x L 的均值和方差分别为1和4，若(i i y x a a =+为非零常数， 1,2,,10)i =L ，则1210,,,y y y L 的均值和方差分别为（ ） A ．1,4a + B ．1,4a a ++ C ．1,4 D ．1,4a + 2．甲、乙两名射击运动员分别进行了5次射击训练，成绩（单位：环）如下： 甲：7，8，8，8，9 乙：6，6，7，7，10； 若甲、乙两名运动员的平均成绩分别用12,x x 表示，方差分别为2212,S S 表示，则（ ） A ．22 1212,x x s s >> B ．22 1212,x x s s >< C ．221212 ,x x s s << D ．221212 ,x x s s <> 3．已知变量,x y 之间满足线性相关关系? 1.31y x =-，且,x y 之间的相关数据如下表所示： 则实数m =（ ） A ．0.8 B ．0.6 C ．1.6 D ．1.8 4．某商场为了了解毛衣的月销售量y （件）与月平均气温x （C ?）之间的关系，随机统计了某4个月的月销售量与当月平均气温，其数据如下表： 由表中数据算出线性回归方程y bx a =+$$$中的2b =-$，气象部门预测下个月的平均气温为 6C ?，据此估计该商场下个月毛衣销售量约为（ ） A ．58件 B ．40件 C ．38件 D ．46件 5．下面的算法语句运行后，输出的值是（ ）
A ．42 B ．43 C ．44 D ．45 6．执行如图的程序框图，则输出x 的值是 ( ) A ．2018 B ．2019 C ． 12 D ．2 7．已知不等式5 01 x x -<+的解集为P ，若0x P ∈，则“01x <”的概率为（ ）． A ． 14 B ． 13 C ． 12 D ． 23 8．将一颗骰子掷两次，观察出现的点数，并记第一次出现的点数为m ，第二次出现的点数 为n ，向量p u v ＝(m ，n)，q v ＝(3,6)．则向量p u v 与q v 共线的概率为( ) A ． 13 B ． 14 C ． 16 D ． 112 9．如图所示是为了求出满足122222018n +++>L 的最小整数n ， 和 两个空白框中，可以分别填入（ ）
第一学期期中考试 高二年级语文试卷 分值：150分时间：150分钟 一、名篇名句默写（每空1分，共10分） 1．补写出下列句子中的空缺部分。 （1）李密在《陈情表》中，陈述自己家没有什么亲属、仆人的实情的句子是 “，。” （2）李密在《陈情表》中以乌鸦反哺比喻要守孝道的句子是“，。”（3）王安石在《游褒禅山记》里认为，古人看各种风景，都有心得，其原因是“。”（4）司马迁在《报任安书》中，为表明只有卓越超群不同一般的人才能名传后世，举了很多历史人 物的事例，其中举周文王和孔子的例子的两句是“；。” （5）我们一般用司马迁《报任安书》“，，”三句话来概 括司马迁写《史记》的目的。 二．语言文字运用（每小题3分，共12分） 2.下面加点词语注音全都正确的一项是（）（3分） A．可汗 ．． kè hán 瞋．目 chēn 床蓐． rù覆校．无疑 jiào /老校．退卒 xiào B．拔擢． zhuó砧．板 zhēn 彘．肩 zhì剌谬． miào / 戮．力lù C．揾．泪 wèn 刀俎． jǔ玉玦． quē目眦．尽裂 zì / 恣．卒为暴 zì D．籼．稻 shān 车骑． jì盘桓． huán 责臣逋．慢bū / 吾未晡．食 bǔ 3.下面加点词语运用不正确的一项是（）（3分） A.跨进新年，深圳正以勃勃英姿 ．．．．，在改革开放的道路上阔步前进。 B.他根据自己的实践，以科学家的胆识和眼光断定杂交水稻研究具有光辉的前景，决心义无反顾．．．．地坚持研究。 C.你除了你的善良的精神以外，身无长物 ．．．．，我恭维了你又有什么好处呢？ D.多情女子决不反弹琵琶 ．．．．；我要是与他人共枕同衾，怎么对得起地下的先灵？ 4.下面的句子没有语病的一项是（）（3分） A.除此之外，发达国家占便宜的另一个重要原因，是因为世界上的大部分钱在他们手里的缘故，即 他们占据着金融市场。 B. 市场规则的建立，离不开完备的法律规范，也离不开有效的道德支撑和约束，他们共同规范着人
绝密★启用前 2018年普通高等学校招生全国统一考试 英语（北京卷） （考试时间：100分钟试卷满分：120分） 考生务必将答案答在答题卡上，在试卷上作答无效。 考试结束后，将本试卷和答题卡一并交回。 第一部分：知识运用（共两节，45分） 第一节单项填空（共15小题；每小题1分，共15分） 从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。 例：It's so nice to hear from her again. _________, we last met more than thirty years ago. A. What's more B. That's to say D. Believe it or not C. In other words 答案是D。 1. —Hi, I'm Peter. Are you new here? I haven't seen you around? —Hello, Peter. I'm Bob. I just _________ on Monday. A. start B. have started C. started D. had started 2. _________ we don't stop climate change, many animals and plants in the world will be gone. A. Although B. While C. If D. Until 3. _________ along the old Silk Road is an interesting and rewarding experience A. Travel B. Traveling C. Having traveled D. Traveled 4. Susan had quit her well-paid job and _________ as a volunteer in the neighborhood when I visited her last year. A. is working B. was working C. has worked D. had worked 5. She and her family bicycle to work, _________ helps them keep fit. A. which B. who C.as D. that 6. During the Mid-Autumn Festival, family members often gather together _________ a meal, admire the moon