最后训练套题6.3号

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人教版2022--2023学年度第一学期六年级数学上册期末测试卷及答案(含两套题)

综合算式：______________（2分）
32. 只列综合算式，不计算。
少年宫合唱队有男生24人，女生26人。男生人数是合唱队人数的百分之几？
综合算式：______________（2分）
33.我国约有660个城市，其中约的城市供水不足，在这些供水不足的城市中，又约有的城市严重缺水，严重缺水的城市约有多少个？（3分）
4. ________和互为倒数，________的倒数是最小的合数。
5. 把吨∶500千克化成最简单的整数比是______，比值是______。
6. 。
7. 6吨增加它的是________吨，________吨增加吨是6吨。________kg是24kg的，比140km多是________km。
34.李大爷家里的菜地共800平方米，他准备用种西红柿，剩下的按3∶1的面积比种黄瓜和茄子。种茄子的面积是多少平方米？（3分）
35.少先队员采集动物标本和植物标本共320件，其中动物标本是植物标本的。植物标本采集了多少件？（用方程解）（3分）
36.夏天天气炎热，人们都喜欢买西瓜来消暑解渴。“果色天香”水果店运进一批西瓜，第一天卖出的西瓜与剩下的西瓜的比是，如果再卖出360千克，就还剩下这批西瓜的。水果店运进的这批西瓜有多少千克？（4分）
4. 一个三角形的三个内角的度数比是2∶5∶3，这个三角形是（）三角形，它最小的内角是（）度。
5. 某班学生人数在40人到50人之间，男生和女生人数的比是5∶6，这个班有男生（）人，女生（）人。
6. 铺一条600m长的路，已经铺了360m，还剩下（）%没有铺。
7. 把3∶2的前项扩大到原来的2倍，后项缩小为原来的后，比值是（）；在3∶2中若前项加上9，要使比值不变，则后项应加上（）。

苏教版小学数学六(上)数学计算题过关训练9套

mhxzkhl六年级数学计算题过关练习一1、直接写出复数。

(20分)3 5×12= 1÷23= 45÷8= 7×27＝38×12=1 5×1625= 14－15= 13＋14910÷320＝14÷78=2、怎样简便就怎样算。

(40分)（1）3－712－512（2）57×38+58×57（3）815×516+527÷109（4）18×（49+56）（4）（1）78χ=1116（2）χ×（34+23）=7244、列式计算。

(20分)（1）一个数的35是30，这个数是多少？（2）比一个数多12%的数是112，求这个数。

六年级数学计算题过关练习二1、直接写出得数。

（20分）12÷12= 1÷1%= 9.5+0.5= 13+14= 0÷15×2=1－1112= 78×514= 712÷74= 45－12= 19×78×9= 2、怎样简便就怎样算。

（40分）（1）23×7+23×5 （2）（16－112）×24－45）（3）（57×47+47）÷47 （4）15÷[（23+15）×113]3、解方程。

（16分）（1）χ－35χ＝65 （２）６×112－12χ＝124、列式计算。

（24分）（1）12加上23的和，等于一个数的23，这个数是多少？（2）一个数的35比它的2倍少28，这个数是多少？六年级数学计算题过关练习三1．直接写出得数。

（16分） 4.9:6.3＝54＋152＝ 87×74＝ 1―41―21＝ 83＋43＝ 53÷103＝ 9÷43＝ 32×61×109＝ 2．解方程。

2024届安徽省合肥市第六中学全真模拟演练模拟最后一卷英语试题(含答案)

绝密★启用前合肥六中2024届高三最后一卷英语考生注意：1. 答题前，考生务必将自己的姓名、考生号填写在试卷和答题卡上，并将考生号条形贴在答题卡上的指定位置。

2. 回答选择题时，选出每小题答案后，用铅笔把答题卡对应题目的答案标号涂黑。

改动，用橡皮擦干净后，再选涂其他答案标号。

回答非选择题时，将答案写在答上。

写在本试卷上无效。

3. 考试结束后，将本试卷和答题卡一并交回。

第一部分听力（共两节，满分30分）做题时，先将答案标在试卷上。

录音内容结束后，你将有2分钟的时间将试卷上的转涂到答题卡上。

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。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出选项。

听完每段对话后，你都有10 秒钟的时间来回答有关小题和阅读下一小题。

每段仅读一遍。

例: How much is the shirt?A. £19. 15.B. £9. 18.C. £9. 15.答案是C。

1. What is the man going to do?A. Have a picnic.B. Go fishing.C. Repair his car.2. What are the speakers mainly talking about?A. The weather.B. Indoor activities.C. The woman's illness.3. Where does the conversation most probably take place?A. At a bus station.B. At a train station.C. At an airport.4. What will the man do next?A. Help the woman find a job.B. Advertise for a worker.C. Conduct an interview.5. Why does the man talk to the woman?A. To book a room.B. To confirm his flight.C. To reschedule a meeting.第二节（共15小题；每小题1. 5分，满分22. 5分）听下面5段对话或独白。

2024年6月大学英语六级考试真题和答案(第3套)

2024年6月大学英语六级考试真题和答案（第3套）Part I Writing (30 minutes)Directions: For this part, you are allowed 30 minutes to write an essay that begins with the sentence “Nowadays, cultivating independent learning ability is becoming increasingly crucial for personal development.” You can make comments, cite examples or use your personal experiences to develop your essay. You should write at least 150 words but no more than 200 words.You should copy the sentence given in quotes at the beginning of your essay.Part Ⅱ Listening Comprehension (30 minutes)Section ADirections:In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 1 to 4 are based on the conversation you have just heard.1. A) Read numerous comments users put online.B) Blended all his food without using a machine.C) Searched for the state-of-the-art models of blenders.D) Did thorough research on the price of kitchen appliances.2. A) Eating any blended food.B) Buying a blender herself.C) Using machines to do her cooking.D) Making soups and juices for herself.3. A) Cooking every meal creatively in the kitchen.B) Paying due attention to his personal hygiene.C) Eating breakfast punctually every morning.D) Making his own fresh fruit juice regularly.4. A) One-tenth of it is sugar.B) It looks healthy and attractive.C) One’s fancy may be tickled by it.D) It contains an assortment of nutrients.Questions 5 to 8 are based on the conversation you have just heard.5. A) How he has made himself popular as the mayor of Berkton.B) How the residents will turn Berkton into a tourist attraction.C) How charming he himself considers the village of Berkton to be.D) How he has led people of Berkton to change the village radically.6. A) It was developed only to a limited extent.B) It was totally isolated as a sleepy village.C) It was relatively unknown to the outside.D) It was endowed with rare natural resources.7. A) The people in Berkton were in a harmonious atmosphere.B) The majority of residents lived in harmony with their neighbors.C) The majority of residents enjoyed cosy housing conditions.D) All the houses in Berkton looked aesthetically similar.8. A) They have helped boost the local economy.B) They have made the residents unusually proud.C) They have contributed considerably to its popularity.D) They have brought happiness to everyone in the village.Section BDirections: In this section, you will hear two passages. At the end of each passage, you will hear three or four questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A)，B)，C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 9 to 11 are based on the passage you have just heard.9. A) They have created the smallest remote-controlled walking robot in the world.B) They are going to publish their research findings in the journal Science Robotics.C) They are the first to build a robot that can bend, crawl, walk, turn and even jump.D) They are engaged in research on a remote-controlled robot which uses special power.10. A) It changes its shape by complex hardware.B) It is operated by a special type of tiny motor.C) It moves from one place to another by memory.D) It is powered by the elastic property of its body.11. A) Replace humans in exploratory tasks.B) Perform tasks in tightly confined spaces.C) Explore the structure of clogged arteries.D) Assist surgeons in highly complex surgery.Questions 12 to 15 are based on the passage you have just heard.12. A) She threw up in the bathroom.B) She slept during the entire ride.C) She dozed off for a few minutes.D) She boasted of her marathon race.13. A) They are mostly immune to cognitive impairment.B) They can sleep soundly during a rough ride at sea.C) They are genetically determined to need less sleep.D) They constitute about 13 percent of the population.14. A) Whether there is a way to reach elite status.B) Whether it is possible to modify one’s genes.C) Whether having a baby impacts one’s passion.D) Whether one can train themselves to sleep less.15. A) It is in fact quite possible to nurture a passion for sleep.B) Babies can severely disrupt their parents’ sleep patterns.C) Being forced to rise early differs from being an early bird.D) New parents are forced to jump out of bed at the crack of dawn.Section CDirections: In this section, you will hear three recordings of lectures or talks followed by three or four questions. The recordings will be played only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Questions 16 to 18 are based on the recording you have just heard. 16. A) We have poor awareness of how many controversial issues are being debated.B) No one knows better than yourself what you are thinking about at the moment.C) No one can change your opinions more than those who speak in a convincing tone.D) We are likely to underestimate how much we can be swayed by a convincing article.17. A) Their belief about physical punishment changed.B) Their memory pushed them toward a current belief.C) The memory of their initial belief came back to them.D) Their experiences of physical punishment haunted them.18. A) They apparently have little to do with moderate beliefs.B) They don’t reflect the changes of view on physical punishment.C) They may not apply to changes to extreme or deeply held beliefs.D) They are unlikely to alter people’s position without more evidence.Questions 19 to 21 are based on the recording you have just heard.19. A) American moms have been increasingly inclined to live alone.B) The American population has been on the rise in the past 25 years.C) American motherhood has actually been on the decline.D) The fertility rates in America have in fact been falling sharply.20. A) More new mothers tend to take greater care of their children.B) More new mothers are economically able to raise children.C) A larger proportion of women take pride in their children.D) A larger proportion of women really enjoy motherhood.21. A) The meaning of motherhood has changed considerably.B) More and more mothers go shopping to treat themselves.C) More mothers have adult children celebrating the holiday.D) The number of American mothers has been growing steadily.Questions 22 to 25 are based on the recording you have just heard.22. A) Add to indoor toxic pollutants.B) Absorb poisonous chemicals.C) Beautify the home environment.D) Soak up surrounding moisture.23. A) NASA did experiments in sealed containers resembling thesuper-insulated offices of 1970s.B) It was based on experiments under conditions unlike those in most homes or offices.C) NASA conducted tests in outer space whose environment is different from ours.D) It drew its conclusion without any contrastive data from other experiments.24. A) Natural ventilation proves much more efficient for cleaning the air than house plants.B) House plants disperse chemical compounds more quickly with people moving around.C) Natural ventilation turns out to be most effective with doors and windows wide open.D) House plants in a normal environment rarely have any adverse impact on the air.25. A) The root cause for misinterpretations of scientific findings.B) The difficulty in understanding what’s actually happening.C) The steps to be taken in arriving at any conclusion with certainty.D) The necessity of continually re-examining and challenging findings.Part III Reading Comprehension (40 minutes)Section ADirections: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2with a single line through the centre. You may not use any of the words in the bank more than once.A rainbow is a multi-colored, arc-shaped phenomenon that can appearin the sky. The colors of a rainbow are produced by the reflectionand____26____of light through water droplets (小滴) present in the atmosphere. An observer may____27____a rainbow to be located either near or far away, but this phenomenon is not actually located at any specific spot. Instead, the appearance of a rainbow depends entirely upon the position of the observer in____28____to the direction of light. In essence, a rainbow is an____29____illusion.Rainbows present a____30____made up of seven colors in a specific order. In fact, school children in many English-speaking countries are taught to remember the name “Roy G. Biv” as an aid for remembering the colors of a rainbow and their order. “Roy G. Biv”____31____for: red, orange, yellow, green, blue, indigo, and violet. The outer edge of the rainbow arc is red, while the inner edge is violet.A rainbow is formed when light (generally sunlight) passes through water droplets____32____in the atmosphere. The light waves change direction as they pass through the water droplets, resulting in two processes: reflection and refraction (折射). When light reflects off a water droplet, it simply____33____back in the opposite direction from where it____34____. When light refracts, it takes a different direction. Some individuals refer to refracted light as “bent light waves.” A rainbow is formed because white light enters the water droplet, where it bends in several different directions. When these bent light waves reach the other side of the water droplet, they reflect back out of the droplet instead of____35____passing through the water. Since the white light is separated inside of the water, the refracted light appears as separate colors to the human eye.A) bouncesB) completelyC) dispersionD) eccentricE) hangingF) opticalG) originatesH) perceiveI) permeatesJ) ponderK) precedingL) recklesslyM) relationN) spectrumO) standsSection BDirections: In this section, you are going to read a passage with tenstatements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2.Blame your worthless workdays on meeting recovery syndromeA) Phyllis Hartman knows what it’s like to make one’s way through the depths of office meeting hell. Managers at one of her former human resources jobs arranged so many meetings that attendees would fall asleep at the table or intentionally arrive late. With hours of her day blocked up with unnecessary meetings, she was often forced to make up her work during overtime. “I was actually working more hours than I probably would have needed to get the work done,” says Hartman, who is founder and president of PGHR Consulting in Pittsburgh, Pennsylvania.B) She isn’t alone in her frustration. Between 11 million and 55 million meetings are held each day in the United States, costing most organisations between 7% and 15% of their personnel budgets. Every week, employees spend about six hours in meetings, while the average manager meets for a staggering 23 hours.C) And though experts agree that traditional meetings are essential for making certain decisions and developing strategy, some employees view them as one of the most unnecessary parts of the workday. The result is not only hundreds of billions of wasted dollars, but an annoyance of what organisational psychologists call “meeting recovery syndrome (MRS)”: time spent cooling off and regaining focus after a useless meeting. If you run to the office kitchen to get some relief with colleagues after a frustrating meeting,you’re likely experiencing meeting recovery syndrome.D) Meeting recovery syndrome is a concept that should be familiar to almost anyone who has held a formal job. It isn’t ground-breaking to say workers feel fatigued after a meeting, but only in recent decades have scientists deemed the condition worthy of further investigation. With its links to organisational efficiency and employee wellbeing, MRS has attracted the attention of psychologists aware of the need to understand its precise causes and cures.E) Today, in so far as researchers can hypothesise, MRS is most easily understood as a slow renewal of finite mental and physical resources. When an employee sits through an ineffective meeting their brain power is essentially being drained away. Meetings drain vitality if they last too long, fail to engage employees or turn into one-sided lectures. The conservation of resources theory, originally proposed in 1989 by Dr. Stevan Hobfoll, states that psychological stress occurs when a person’s resources are threatened or lost. When resources are low, a person will shift into defence to conserve their remaining supply. In the case ofoffice meetings, where some of employees’ most valuable resources are their focus, alertness and motivation, this can mean an abrupt halt in productivity as they take time to recover.F) As humans, when we transition from one task to another on the job —say from sitting in a meeting to doing normal work—it takes an effortful cognitive switch. We must detach ourselves from the previous task and expend significant mental energy to move on. If we are already drained to dangerous levels, then making the mental switch to the next thing is extra tough. It’s common to see people cyber-loafing after a frustrating meeting, going and getting coffee, interrupting a colleague and telling them about the meeting, and so on.G) Each person’s ability to recover from horrible meetings is different. Some can bounce back quickly, while others carry their fatigue until the end of the workday. Yet while no formal MRS studies are currently underway, one can loosely speculate on the length of an average employee’s lag time. Switching tasks in a non-MRS condition takes about 10 to 15 minutes. With MRS, it may take as long as 45 minutes on average. It’s even worse when a worker has several meetings that are separated by 30 minutes. “Not enough time to transition in a non-MRS situation to get anything done, and in an MRS situation, not quite enough time to recover for the next meeting,” says researcher Joseph Allen. “Then, add the compounding of back-to-back bad meetings and we may have an epidemic on our hands.”H) In an effort to combat the side effects of MRS, Allen, along with researcher Joseph Mroz and colleagues at the University of Nebraska-Omaha, published a study detailing the best ways to avoid common traps, including a concise checklist of do’s and don’ts applicable to any workplace. Drawing from around 200 papers to compile their comprehensive list, Mroz and his team may now hold a remedy to the largely undefined problem of MRS.I) Mroz says a good place to start is asking ourselves if our meetings are even necessary in the first place. If all that’s on the agenda is a quick catch-up, or some non-urgent information sharing, it may better suit the group to send around an email instead. “The second thing I would always recommend is keep the meeting as small as possible,” says Mroz. “If they don’t actually have some kind of immediate input, then they can follow up later. They don’t need to be sitting in this hour-long meeting.” Less time in meetings would ultimately lead to more employee engagement in the meetings they do attend, which experts agree is a proven remedy for MRS.J) Employees also feel taxed when they are invited together to meetings that don’t inspire participation, says Cliff Scott, professor of organisational science. It takes precious time for them to vent their emotions, complain and try to regain focus after a pointless meeting—one of the main traps of MRS. Over time as employees find themselves tied up in more and more unnecessary meetings—and thus dealing with increasing lag times from MRS—the waste of workday hours can feel insulting.K) Despite the relative scarcity of research behind the subject, Hartman has taught herself many of the same tricks suggested in Mroz’s study, and has come a long way since her days of being stuck with unnecessary meetings. The people she invites to meetings today include not just the essential employees, but also representatives from every department that might have a stake in the issue at hand. Managers like her, who seek input even from non-experts to shape their decisions, can find greater support and cooperation from their workforce, she says.L) If an organisation were to apply all 22 suggestions from Mroz and Allen’s findings, the most noticeable difference would be a stark decrease in the total number of meetings on the schedule, Mroz says. Lesstime in meetings would ultimately lead to increased productivity,which is the ultimate objective of convening a meeting. While none of the counter-MRS ideas have been tested empirically yet, Allen says one trick with promise is for employees to identify things that quickly change their mood from negative to positive. As simple as it sounds, finding a personal happy place, going there and then coming straight back to work might be key to facilitating recovery.M) Leaders should see also themselves as “stewards of everyone else’s valuable time”, adds Steven Rogelberg, author of The Surprising Science of Meetings. Having the skills to foresee potential traps and treat employees’ endurance with care allows leaders to provide effective short-term deterrents to MRS.N) Most important, however, is for organisations to awaken to the concept of meetings being flexible, says Allen. By reshaping the way they prioritise employees’ time, companies can eliminate the very sources of MRS in their tracks.36. Although employees are said to be fatigued by meetings, the condition has not been considered worthy of further research until recently. 37. Mroz and his team compiled a list of what to do and what not to do to remedy the problem of MRS.38. Companies can get rid of the root cause of MRS if they give priority to workers’ time.39. If workers are exhausted to a dangerous degree, it is extremely hard for them to transition to the next task.40. Employees in America spend a lot of time attending meetings while the number of hours managers meet is several times more.41. Phyllis Hartman has learned by herself many of the ways Mroz suggested in his study and made remarkable success in freeing herself fromunnecessary meetings.42. When meetings continue too long or don’t engage employees, they deplete vitality.43. When the time of meetings is reduced, employees will be more engaged in the meetings they do participate in.44. Some employees consider meetings one of the most dispensable parts of the workday.45. According to Mroz, if all his suggestions were applied, a very obvious change would be a steep decrease in the number of meetings scheduled.Section CDirections:There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Passage OneQuestions 46 to 50 are based on the following passage.Sarcasm and jazz have something surprisingly in common: You know them when you hear them. Sarcasm is mostly understood through tone of voice, which is used to portray the opposite of the literal words. For example, when someone says, “Well, that’s exactly what I need right now,” their tone can tell you it’s not what they need at all.Most frequently, sarcasm highlights an irritation or is, quite simply, mean.If you want to be happier and improve your relationships, cut out sarcasm. Why? Because sarcasm is actually hostility disguised as humor.Despite smiling outwardly, many people who receive sarcastic comments feel put down and often think the sarcastic person is rude, or contemptible. Indeed, it’s not surprising that the origin of the word sarcasm derives from the Greek word “sarkazein” which literally means “to tear or strip the flesh off.” Hence, it’s no wonder that sarcasm is often preceded by the word “cutting” and that it hurts.What’s more, since actions strongly determine thoughts and feelings, when a person consistently acts sarcastically it may only serve to heighten their underlying hostility and insecurity. After all, when you come right down to it, sarcasm can be used as a subtle form of bullying —and most bullies are angry, insecure, or cowardly.Alternatively, when a person stops voicing negative comments, especially sarcastic ones, they may soon start to feel happier and more self-confident. Also, other people in their life benefit even more because they no longer have to hear the emotionally hurtful language of sarcasm.Now, I’m not saying all sarcasm is bad. It may just be better usedsparingly—like a potent spice in cooking. Too much of the spice, and the dish will be overwhelmed by it. Similarly, an occasional dash of sarcastic wit can spice up a chat and add an element of humor to it. But a big or steady serving of sarcasm will overwhelm the emotional flavor of any conversation and can taste very bitter to its recipient.So, tone down the sarcasm and work on clever wit instead, which is usually without any hostility and thus more appreciated by those you’re communicating with. In essence, sarcasm is easy while true, harmless wit takes talent.Thus, the main difference between wit and sarcasm is that, as already stated, sarcasm is often hostility disguised as humor. It can be intended to hurt and is often bitter and biting. Witty statements are usually in response to someone’s unhelpful remarks or behaviors, and the intent is to untangle and clarify the issue by emphasizing its absurdities. Sarcastic statements are expressed in a cutting manner; witty remarks are delivered with undisguised and harmless humor.46. Why does the author say sarcasm and jazz have something surprisingly in common?A) Both are recognized when heard.B) Both have exactly the same tone.C) Both mean the opposite of what they appear to.D) Both have hidden in them an evident irritation.47. How do many people feel when they hear sarcastic comments?A) They feel hostile towards the sarcastic person.B) They feel belittled and disrespected.C) They feel a strong urge to retaliate.D) They feel incapable of disguising their irritation.48. What happens when a person consistently acts sarcastically?A) They feel their dignity greatly heightened.B) They feel increasingly insecure and hostile.C) They endure hostility under the disguise of humor.D) They taste bitterness even in pleasant interactions.49. What does the author say about people quitting sarcastic comments?A) It makes others happier and more self-confident.B) It restrains them from being irritating and bullying.C) It benefits not only themselves but also those around them.D) It shields them from negative comments and outright hostility.50. What is the chief difference between a speaker’s wit and sarcasm?A) Their clarity.B) Their appreciation.C) Their emphasis.D) Their intention.Passage TwoQuestions 51 to 55 are based on the following passage.Variability is crucially important for learning new skills. Consider learning how to serve in tennis. Should you always practise serving from the exactly same location on the court, aiming at the same spot? Although practising in more variable conditions will be slower at first, it will likely make you a better tennis player in the end. This is because variability leads to better generalisation of what is learned.This principle is found in many domains, including speech perception and learning categories. For instance, infants will struggle to learn the category “dog” if they are only exposed to Chihuahuas, instead of many different kinds of dogs.“There are over ten different names for this basic principle,” says Limor Raviv, the senior investigator of a recent study. “Learning from less variable input is often fast, but may fail to generalise to new stimuli.”To identify key patterns and understand the underlying principles of variability effects, Raviv and her colleagues reviewed over 150 studies on variability and generalisation across fields, including computer science, linguistics, categorisation, visual perception and formal education.The researchers discovered that, across studies, the term variability can refer to at least four different kinds of variability, such as set size and scheduling. “These four kinds of variability have never been directly compared—which means that we currently don’t know which is most effective for learning,” says Raviv.The impact of variability depends on whether it is relevant to the task or not. But according to the ‘Mr. Miyagi principle’, practising seemingly unrelated skills may actually benefit learning of other skills.But why does variability impact learning and generalisation? One theory is that more variable input can highlight which aspects of a task are relevant and which are not.Another theory is that greater variability leads to broader generalisations. This is because variability will represent the real world better, including atypical (非典型的) examples.A third reason has to do with the way memory works: when training is variable, learners are forced to actively reconstruct their memories.“Understanding the impact of variability is important for literally every aspect of our daily life. Beyond affecting the way we learn language, motor skills, and categories, it even has an impact on our social lives,”explains Raviv. “For example, face recognition is affected by whether people grew up in a small community or in a larger community. Exposure to fewer faces during childhood is associated with diminished face memory.”“We hope this work will spark people’ s curiosity and generate morework on the topic,” concludes Raviv.“Our paper raises a lot of open questions. Can we find similar effects of variability beyond the brain, for instance, in the immune system?”51. What does the passage say about infants learning the category “dog”if they are exposed to Chihuahuas only?A) They will encounter some degree of difficulty.B) They will try to categorise other objects first.C) They will prefer Chihuahuas to other dog species.D) They will imagine Chihuahuas in various conditions.52. What does Raviv say about the four different kinds of variability?A) Which of them is most relevant to the task at hand is to be confirmed.B) Why they have an impact on learning is far from being understood.C) Why they have never been directly compared remains a mystery.D) Which of them is most conducive to learning is yet to be identified.53. How does one of the theories explain the importance of variability for learning new skills?A) Learners regard variable training as typical of what happens in the real world.B) Learners receiving variable training are compelled to reorganise their memories.C) Learners pay attention to the relevant aspects of a task and ignore those irrelevant.D) Learners focus on related skills instead of wasting time and effort on unrelated ones.54. What does the passage say about face recognition?A) People growing up in a small community may find it easy to remember familiar faces.B) Face recognition has a significant impact on literally every aspect of our social lives.C) People growing up in a large community can readily recognise any individual faces.D) The size of the community people grow up in impacts their face recognition ability.55. What does Raviv hope to do with their research work?A) Highlight which aspects of a task are relevant and which are not to learning a skill.B) Use the principle of variability in teaching seemingly unrelated skills in education.C) Arouse people’s interest in variability and stimulate more research on the topic.D) Apply the principle of variability to such fields of study as the immune system.。

华师大版七年级下册数学练习课件-第6章-6.3 第2课时和差倍分问题与销售利润问题

思维训练
▪ 15．为了丰富学生的课外活动，学校决定购买一批体育活动用品，经调查发现：甲、乙两个体育用品商店以同样的价格出售同种品牌的篮球和羽毛球拍．已知每个篮球比每副羽毛球拍多50元，两个篮球与三副羽毛球拍的费用相等，经洽谈，甲商店的优惠方案是：每购买十个篮球，送一副羽毛球拍；乙商店的优惠方案是：若购买篮球超过80个，则购买羽毛球拍打八折．
第6章一元一次方程
6.3 实践与探索
第二课时和差倍分问题与销售利润问题
名师点睛
▪ 知识点1 和差倍分问题 ▪ 和差倍分问题的显著特点，就是在题目中能找到两个有关系
的量，并且其中一个量能用另一个量的和、差、倍、分表示． ▪ 提示：当题目中有两个等量关系且其中一个等量关系比较简单时，一般以较为简单的等量关系转化未知数，以较为复杂的等量关系列方程．
2
知识点 2 销售利润问题销售问题中的等量关系：标价＝成本×(1＋提价率)；售价＝标价×打折率；销售利润＝售价－成本(进价)；
售价－进价销售利润率＝进价 ×100%.
3
▪ 【典例】某商家将一种电视机按进价提高35%后定价，然后打出“九折酬宾，外送50元出租车费”的广告，结果每台电视机仍获利208元．
自己的D 综合成绩追平竞争对手，则她的面试成绩必须比竞争
对手多( )
▪ A．2.4分 B．4分
7
▪ 4．【黑龙江牡丹江中考】小明按标价的八折购买了一双鞋，比按标价购买节省了40元16，0 这双鞋的实际售价为 __________元．
▪ 5．已知派派的妈妈和派派今年共36岁，再过125年，派派的妈妈的年龄是派派年龄的4倍还大1岁，当派派的妈妈40岁时，派派的年龄为__________岁12或．15

电工基础知识考试题库【3套练习题】模拟训练含答案(第2次)

电工基础知识考试题库【3套练习题】模拟训练含答案答题时间：120分钟试卷总分：100分姓名：_______________ 成绩：______________第一套一.单选题(共20题)1.导线和磁力线发生相对切割运动时,导线中会产生感应电动势,它的大小与()有关。

A.电流强度B.电压强度C.方向D.导线有效长度2.当人体触及漏电设备外壳，加于人手与脚之间的电位差称为（）A短路电压B接触电压C跨步电压D故障电压3.SF6断路器的每日巡视检查中应定时记录()。

A.气体压力和含水量B.气体温度和含水量C.气体压力和温度4.输入阻抗高、输出阻抗低的放大器有()。

A.共射极放大器B.射极跟随器C.共基极放大器5.变压器一次绕组一般用绝缘纸包的（）或铝线绕制而成。

A、绝缘Ｂ、铜线Ｃ、硅钢片6.变压器的效率是指变压器的（）之比的百分数。

A、总输出与总输入B、输出有功功率与输入总功率C、输出有功功率与输入有功功率7.架空线路导线通过的最大负荷电流不应超过其（）A额定电流B短路电流C允许电流D空载电流8.高压开关柜标准单元设置的设备有（）、可见的三工位开关、母线、观察窗等A、负荷开关Ｂ、真空断路器Ｃ、熔断器9.阻值不随外加电压或电流的大小而改变的电阻叫（）。

A.固定电阻B.可变电阻C.线性电阻D.非线性电阻10.10kＶ三相供电电压允许偏差为额定电压的（）Ａ．±７％；Ｂ．±１０％；Ｃ．＋７％，－１０％；11.在雷云对地放电过程中，（）阶段持续时间最长A先导放电B主放电C余辉放电12.如果忽略变压器一、二次绕组的漏电抗和电阻时，变压器一次测电压有效值等于一次测感应电势有效值，（）等于二次侧感应电势有效值。

A、二次侧电压瞬时值B、二次侧电压有效值C、二次侧电压最大值13.绝缘夹钳主要用于（）的电力系统A、35kV及以下Ｂ、110kVＣ、220kVD、500kV14.变压器二次绕组开路，一次绕组施加（）的额定电压时，一次绕组中流过的电流为空载电流。

2023年6月英语六级第三套题目答案一览

2023年6月英语六级第三套题目答案一览2023年6月英语六级第三套题目答案已经公布，需要核对答案的同学可以参考一下。

下面是我为大家整理的2023年6月英语六级第三套题目答案一览，欢迎大家（保藏）与共享一下哟!2023年6月英语六级第三套题目答案一、六级（作文）部分：Writingmore and more people take the delight to helping the needy（范文）：Currently in our society, it is quite prevalent for citizens to give a hand to those who are in need of help.Apart from this trend, what encourages people is that people in growing numbers find it delighted to help the needy. The reasons, from my per-spective, can be listed as follows.The first motivation behind this trend lies in the growing abili-ty of average people to help others. Unlike those in the early 21st century, people in current society are equipped with knowledge,skills, and even economic strength to provide more assistance to help the needy. What is more, this trend is largely associated with the sense of satisfaction of the public. When offering help on time, those who lend a hand realize their own value and thus part of the meaning of their life, whichfurther strengthens similar behaviors in their daily life. The last factor is about positive energy in the mass media.In China,a country with traditional virtues of helping the disadvantaged, matters of the help among common people are great ingredients for the publicity of both tradition virtues and modern values.For me, it is much delighted to see that the public are more likely to lend a hand to others voluntarily.With peoples growing ability, the sense of satisfaction, and the spread of good deeds in the mass media, this trend will inevitably become a norm in our society.二、六级听力部分：更新中。

北京海淀区6月高三第二学期期末练习及答案

高三第二学期期末练习数学学校班级姓名题号一二三总分〔17〕〔18〕〔19〕〔20〕〔21〕〔22〕分数参考公式：三角函数的积化和差公式)]sin()[sin(21cos sin βαβαβα-++=⋅)]sin()[sin(21sin cos βαβαβα--+=⋅)]cos()[cos(21cos cos βαβαβα-++=⋅)]cos()[cos(21sin sin βαβαβα--+-=⋅一、选择题：本大题共12小题；每题5分,共60分．在每题给出的四个选项中,只有一项为哪一项符合题目要求的．〔1〕设全集I={1,3,5,7,9},集合A={1,|a －5|,9},}7,5{=A ,那么a 的值是〔〕〔A 〕2〔B 〕8〔C 〕－2或8〔D 〕2或8 〔2〕函数)1(log 2-=x y 的反函数的图象是〔〕〔3〕〔理〕假设点P 〔x ,y 〕在曲线⎩⎨⎧+-=+=θθsin 54cos 53y x 〔θ为参数〕上,那么使x 2+y 2取最大值的点P 的坐标是〔〕〔A 〕〔6,－8〕〔B 〕〔－6,8〕〔C 〕〔3,－4〕〔D 〕〔－３,4〕〔文〕假设直线01243=+-y x 与两坐标轴交点为A 、B,那么以线段AB 为直径的圆的正棱台、圆台的侧面积 l c c S )(21+'=台侧其中c ′、c 分别表示上、下底面周长,l 表示斜高或母线长. 台体的体积公式：h s s s s V )(31+'+'=台体其中s ′、s 分别表示上、下底面的面积,h 表示高.方程是〔〕〔A 〕03422=-++y x y x〔B 〕03422=--+y x y x 〔C 〕043422=--++y x y x 〔D 〕083422=+--+y x y x〔4〕7)1(xx -展开式的第四项等于7,那么x 等于〔〕〔A 〕－５〔B 〕－51〔C 〕51〔D 〕5〔5〕〔理〕以下命题中,使命题M 是命题N 成立的充要条件的一组命题是〔〕〔A 〕M ：a ＞b,N ：ac 2＞bc 2〔B 〕M ：a ＞b,c ＞d,N ：a －d ＞b －c 〔C 〕M ：a ＞b ＞0,c ＞d ＞0,N ：ac ＞bd 〔D 〕M ：|a －b|=|a|+|b|,N ：ab ≤0〔文〕假设a,b 是任意实数,且a ＞b ,那么〔〕〔A 〕22b a >〔B 〕b a )21()21(<〔C 〕0)lg(>-b a 〔D 〕1<ab〔6〕〔理〕复数),21,,(≥∈+=x R y x yi x z 满足,|1|x z =-那么z 在复平面上对应点),(y x 的轨迹是〔〕〔A 〕圆〔B 〕椭圆〔C 〕双曲线〔D 〕抛物线〔文〕复数2)1(31i i ++-的辐角主值是〔〕〔A 〕6π〔B 〕π65〔C 〕π67〔D 〕π611〔7〕用半径为48cm 的半圆形铁皮制作上口半径为8cm,下口半径为2cm,且母线长为36cm的漏斗〔不考虑接缝损耗〕,那么最多可作〔〕〔A 〕1个〔B 〕2个〔C 〕3个〔D 〕4个〔8〕某科技小组有6名同学,现从中选出3人去参观展览,至少有1名女生入选时的不同选法有16种,那么小组中的女生数目为〔〕〔A 〕2 〔B 〕3 〔C 〕4 〔D 〕5〔9〕〔理〕F 1,F 2是椭圆)105(1)10(2222<<=-+a a y a x 的两个焦点,B 是短轴的一个端点, 那么△F 1BF 2的面积的最大值为〔〕〔A 〕33100〔B 〕93100〔C 〕)223(100-〔D 〕221a 〔文〕F 1,F 2是椭圆)20(14222<<=+b b y x 的两个焦点,B 是短轴的一个端点, 那么 △F 1BF 2 的面积的最大值为〔〕〔A 〕1 〔B 〕2 〔C 〕3 〔D 〕4〔10〕△ABC 边上的高线为AD ．BD=a ,CD=b,且a ＜b ．将△ABC 沿AD 折成大小为θ的二面角B —AD —C ．假设,cos ba =θ那么三棱锥A —BDC 的侧面△ABC 是〔〕〔A 〕锐角三角形〔B 〕钝角三角形〔C 〕直角三角形〔D 〕形状与a ,b 的值有关的三角形〔11〕数列{a n }中,a 1=1,S n 是前n 项和．当n ≥2时,a n =3S n ,那么31lim 1-++∞→n n n S S 的值是〔〕〔A 〕31-〔B 〕－2 〔C 〕1〔D 〕54-〔12〕对于抛物线C ：x y 42=,我们称满足0204x y <的点),(00y x M 在抛物线的内部．假设点),(00y x M 在抛物线的内部,那么直线)(2:00x x y y l +=与C〔〕〔A 〕恰有一个公共点〔B 〕恰有两个公共点〔C 〕可能一个公共点也可能两个公共点〔D 〕没有公共点二、填空题：本大题共4小题,每题4分,共16分．把答案填在题中横线上．〔13〕如果)4(,41)4(,52)(παπββα+=-=+tg tg tg 那么的值是．〔14〕圆锥与圆柱的底面半径都是r,高都是h ．它们的侧面积相等,那么r ∶h= ．〔15〕双曲线与椭圆22525922=+y x 有相同的焦点又过点〔3,－1〕,那么双曲线的渐近线方程是．〔16〕无穷数列{a n }同时满条件：①对于任意自然数n,都有;42<<-na ②当n 为正偶数时,;11+-><n n n n a a a a且③当.0,3>>n a n 时请写出一个满足条件的数列{a n }的通项公式：．三、解做题：本大题共6个小题,共74分．解容许写出文字说明、证实过程或演算步骤．〔17〕〔本小题总分值12分〕〔理科作〕解不等式：.02log 211log 3212>++-x x〔文科作〕解不等式：.1log 35log 25>-x x〔18〕〔本小题总分值12分〕在△ABC 中,∠A,∠B,∠C 的对边分别为a ,b,c ．假设45cos )2(cos 2=++A A π,.3a c b =+〔Ⅰ〕求)cos(C B -的值；〔Ⅱ〕设复数11),cos()sin(22-+--+=zz C B i C B z 求的值．〔19〕〔本小题总分值12分〕如下图,三棱柱ABC —A 1B 1C 1的各棱长均为2,侧棱B 1B 与底面ABC 所成的角为3,且侧面ABB 1A 1垂直于底面ABC ．〔Ⅰ〕证实AB ⊥CB 1；〔Ⅱ〕求三棱锥B 1—ABC 的体积；〔Ⅲ〕求二面角C —AB 1—B 的大小〔文科求其正切值〕．〔20〕〔本小题总分值12分〕某地区预计从明年初开始的前x 个内,对某种商品的需求总量f 〔x 〕〔万件〕与月份数x的近似关系为)12,)(235)(1(1501)(≤∈-+=x N x x x x x f 〔Ⅰ〕写出明年第x 个月的需求量g 〔x 〕〔万件〕与月份数x 的函数关系；〔Ⅱ〕求出哪个月份的需求量超过1.4万件,并求出这个月的需求量．〔21〕〔本小题总分值12分〕设二次函数),()(2R c b c bx x x f ∈++=,不管α,β为何实数,恒有.0)cos 2(0)(sin ≤+≥βαf f 和〔Ⅰ〕求证：;1-=+c b 〔Ⅱ〕求证：;3≥c〔Ⅲ〕假设函数)(sin αf 的最大值为8,求b,c 的值．〔22〕〔本小题总分值14分〕〔文科学生只作〔Ⅰ〕〔Ⅱ〕小题〕如下图,BC 是一条曲线段,点B 在直线l 上．点C 到l 的距离等于5,l 外一点A 到l 的距离为2．对于曲线段BC 上的任意一点P,总满足|PA|－d =3,其中d 是点P 到直线l 的距离．〔Ⅰ〕建立适当的坐标系．写出l的方程及点A的坐标,并求出点B、点C的坐标；〔Ⅱ〕求出曲线段BC的方程；〔Ⅲ〕设另有一定点D,AD⊥l,A、D位于l两侧,且点D到l的距离为a〔a＞0〕,求曲线段BC上的点到点D的最近距离．高三数学第二学期期末练习参考答案及评分标准一、选择题〔每题5分,共60分〕〔1〕D 〔2〕C〔3〕A〔4〕B〔5〕〔理〕D〔文〕B〔6〕〔理〕D〔文〕A〔7〕C 〔8〕A 〔9〕B 〔10〕C 〔11〕A 〔12〕D二、填空题〔每题4分,共16分〕〔13〕223 〔14〕1:3 〔15〕x y ±=〔16〕 ;).(2),(1;2)12(sin 2;2)1(1⎩⎨⎧=++=-+=为偶数为奇数n n a n a n a n n n n π三、解做题〔17〕本小题总分值12分解：〔理〕设,log 2x t =那么原不等式等价于.2231->-t t ………………2分即⎪⎪⎩⎪⎪⎨⎧<-≥-⎪⎪⎪⎩⎪⎪⎪⎨⎧->-≥-≥-.0223,01,)223(10223,012t t t t t t 或……………………………………7分 .341,2910,34.341,020289,34.34,1,46491,34,122<≤⎪⎪⎩⎪⎪⎨⎧<<≥⇔≤≤⎪⎪⎩⎪⎪⎨⎧<+-≥⇔⎪⎪⎩⎪⎪⎨⎧<≥⎪⎪⎪⎩⎪⎪⎪⎨⎧+->-≥≥⇔t t t t t t t t t t t t t t 或或或 .21<≤⇔t …………10分.2log 12<≤∴x .42<≤∴x∴原不等式的解集是{x |.42<≤x }………………………………………………12分〔文〕设,log 5x t =那么原不等式化为.032.1322>--⇔>-tt t t t ……………………2分 .0)1)(23(.0)23(2<+-⇔<-+⇔t t t t t t …………………………………………6分.3201<<-<∴t t 或………………8分 .32log 01log 55<<-<∴x x 或………………10分.5151032<<<<⇔x x 或…………12分∴原不等式的解集是}.51510|{32<<<<x x x 或〔18〕本小题总分值12分解：〔Ⅰ〕由.45cos sin ,45cos )2(cos 22=+=++A A A A 得π………………………………1分.01cos 4cos 42=+-∴A A .21cos =∴A ………………………………2分 ∵A 是△ABC 的内角,.32,3ππ=+=∴C B A ………………………………3分由正弦定理知,.23sin 3sin sin ==+A C B.232cos ,232cos 2sin 2=-∴=-+∴C B C B C B …………………………………4分由.21)cos(,12cos 2)cos(2=---=-C B C B C B 得………………………………6分〔Ⅱ〕.2123,23)sin(,21)cos(i z C B C B -=∴=+=- ………………………………8分 i i z 2321)2123(22-=-=∴……………………………………………………9分故.0123212321123211)2321(1122=-++-=--+-=-+i i ii z z …………12分〔19〕本小题总分值12分〔Ⅰ〕证实：在平面ABB 1A 1内,过B 1作B 1D ⊥AB 于D ．…………………………1分 ∵侧面ABB 1A 1⊥平面ABC,∴B 1D ⊥平面ABC ．……………………2分 ∴∠B 1BA 是B 1B 与底面ABC 所成的角,∴∠B 1BA=60°．…………3分 ∴三棱柱的各棱长均为2,∴△ABB 1是正三角形．∴D 是AB 的中点．连结CD,在正三角形ABC 中,CD ⊥AB ．∴AB ⊥CB 1…………………………………………………………………5分〔Ⅱ〕解：∵B 1D ⊥平面ABC,∴B 1D 是三棱锥B 1—ABC 的高． ∴由B 1B=2,∠B 1BA=60°,得.360sin 21=︒=D B.13)222321(313111=⨯⨯⨯=⋅=∴∆-D B S V ABC ABC B …………………………8分〔Ⅲ〕解：∵△ABC 为正三角形,D B CD AB CD 1,⊥⊥,.1ABB CD 平面⊥∴………9分在平面ABB 1中作DE ⊥AB 1于E ．连结CE,那么CE ⊥AB 1．∴∠CED 为二面角C —AB 1—B 的平面角．………………………………10分在Rt △CED 中,.360sin 2=︒=CD 连结BA 1交AB 1于O,那么,3=BO.2.2321==∠∴==∴DECD CED tg BO DE ∴所求二面角C —AB 1—B 的大小为2arctg 〔文科：所求二面角C —AB 1—B 的平面角的正切值为2〕……………………………………………………………………12分〔20〕本小题总分值12分解：〔Ⅰ〕第一个月需求量为.2511)1()1(==f g当2≥x 时,第x 个月的需求量为),12(251)1()()(2x x x f x f x g +-=--=…………………………………………5分当x=1时,g 〔1〕也适合上式．).12,)(12(251)(2≤∈+-=x N x x x x g ………………………………………………7分〔Ⅱ〕由题意可得：,4.1)12(2512>+-x x 解之得.6,,75=∴∈<<x N x x ………………………………………………10分 .44.1)6(=∴g ………………………………………………………………………11分答：第六个月需求量超过1.4万件,为1.44万件．………………………………12分〔21〕本小题总分值12分解：〔Ⅰ〕.0)1(,0)(sin 1sin 1≥∴≥≤≤-f f 恒成立且αα.0)1(,0)cos 2(3cos 21≤∴≤+≤+≤f f 恒成立且ββ从而知.1.01.0)1(-=+=++∴=c b c b f 即……………………………………4分〔Ⅱ〕由.039,0)3(,0)cos 2(≤++∴≤≤+c b f f 知β又由于.3.1≥∴-=+c c b …………………………………………………………8分〔Ⅲ〕,)21()21(sin sin )1(sin )(sin 222c c c c c f +-++-=+--+=αααα 当.8)](sin [,1sin max =-=ααf 时由⎩⎨⎧=++=+-.01,81c b c b 解得.3,4=-=c b ………………………………………………12分〔22〕本小题总分值14分解：〔Ⅰ〕以l 为y 轴,且点A 在x 轴的正半轴上建立直角坐标系．……理1分〔文2分〕那么l 的方程为x =0,点A 的坐标为〔2,0〕………………………理2分〔文3分〕由|BA|=3,可求出点B 的坐标为).5,0(……………………理3分〔文5分〕设点C 坐标为〔－5,y 〕,由|AC|－5=3,得,64)25(22=+--y15±=∴y 〔舍去负值〕．∴点C 的坐标为).15,5(-……………………………………理5分〔文8分〕〔Ⅱ〕设点P 〔x,y 〕是曲线段BC 上任意一点,那么3)()2(22=--+-x y x)0,05(522>≤≤-+-=∴y x x y ……………………………理9分〔文14分〕〔Ⅲ〕设点D ),0)(0,(>-a a 点P 〔x ,y 〕是曲线段BC 上任意一点,依题意：42)]1([52)()(||2222++--=+-+=++=a a x x a x y a x PD ……理11分假设;42||,1,61,015min +=-=≤≤≤-≤-a PD a x a a 时则当即………理12分假设;5||,0,10,012min +==<<>-a PD x a a 时则当即………………理13分假设.4010||,5,6,512min +-=-=>-<-a a PD x a a 时则当即…………理14分说明：其它正确解法按相应步骤给分．。

2012年新课标高考最后六天终极冲刺揭秘试卷英语试卷(三)付详解.pdf

2012年新课标高考最后六天终极冲刺揭秘试卷英语试卷（三）本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

共150分，考试时间120分钟。

第Ⅰ卷第一部分　听力(共两节，满分30分) 第二部分　英语知识运用(共两节，满分45分) 第一节　单项填空(共15小题；每小题1分，满分15分) 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

21．—Your sister nearly ________ all her spare time to her study during the three years. —That's right, or she ________ the first place in her school in the College Entrance Examination. A．devoted; wouldn't have taken B．spent; wouldn't have taken C．hadn't devoted; hadn't taken D．hadn't spent; couldn't take 22．I've heard ________ said that Elizabeth is a tough business woman. A．it B．he C．what D．that 23．Many elderly people are now not used to the ________ of modern living, which they consider is away from the old customs. A．tendency B．tend C．trend D．treat 24．We must keep a positive attitude toward the future ________ we may encounter some difficulties. A．however B．as if C．even if D．since 25．It has been discovered that the traffic accident ________ the driver's careless driving. A．resulted in B．resulted from C．led to D．contributed to 26．—Have you found the MP3 player you lost? —No, I haven't found ________， but I have bought ________. A．it; one B．one; it C．it; it D．one; one 27．The government is ________ to everyone to save energy in order to carry out the construction of “two-oriented society” in Wuhan and other circle cities. A．attaching B．adapting C．adjusting D．appealing 28．—Why didn't you tell me the truth that day? —I ________， but you ________ for Shanghai when I went to see you. A．did; would leave B．would; had been away C．would have; had left D．had; were away 29．It is said that the employees who have worked here for many years will be given ________ over the newcomers. A．respect B．preference C．consideration D．advantage 30．—Our holiday cost a lot of money. —Did it? Well, that doesn't matter ________ you enjoyed yourselves. A．unless B．as far as C．as long as D．until 31．He decided to go to America alone to make his fortune without any friends or ________. A．families B．possession C．help D．possessions 32．Only when the final examination was coming ________ he had quite a lot to do. A．he realized B．he had realized C．did he realize D．had he realized 33．So you have to leave. How nice it ________ if you ________a bit longer! A．would be; could stay B．is; can stay C．should be; stay D．was; are able to stay 34．________ occurred to me that the murder happened ________ a rainy day. A．What; in B．What; on C．It; in D．It; on 35．—So you missed the meeting. —________. I got there five minutes before it finished. A．Not at all B．Not exactly C．Not especially D．Not really 第二节　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，选出最佳选项。

北师大数学三年级下册解决问题专项训练

北师大数学三年级下册解决问题专项训练在做解决问题时，要做到如下几点：一、读清题目，弄清题意，找出关键信息。

二、确定先算什么，再算什么，然后列式计算，再作答。

三、把得到的结果套进原来的题目里进行检查。

1.大号运动服30元，小号运动服20元，买大号运动服25套，小号运动服45套，一共应付多少元？2.书包24元铅笔盒11元一班共有42名同学，每人一套，一共花多少元？3.一架飞机每分飞行21千米，每时飞行多少千米？4.有10箱苹果汁，12箱橘子汁，每箱24瓶，一共有多少瓶饮料？5.旅行团共有46人，儿童36名。

儿童票15元成人票30元购儿童票需要多少元？这个旅游团成人有多少？购成人票需要多少元？一共花了多少元？6.3瓶饮料15元，每人一瓶，36人要付多少元？7.小文今年11岁，爷爷的年龄比他的5倍多8岁，爷爷今年多少岁？8.光华小区新建了15栋楼房，每栋有6层，每层有8户，新建的楼房可住多少户人家？9.王老师要打印一份10页的稿件，每页26行，每行28个字，这份稿件有多少个字？10.捐书活动中每包书50本，三年级捐了12包，还多35本，四年级还差5本就够15包了。

三年级和四年级分别捐了多少本书？五年级捐了597本书，50本包成一包，包了11包，还剩几本书？11.有76个座位的森林音乐厅举行音乐会，每张票15元。

（1）已售出42张票，收款多少元？（2）剩余的票按每张12元出售，最多可以收款多少元？12.李兰不小心把自己讲故事比赛的成绩单弄脏了，你能帮她把第三些水泥重多少千克？14.端午节李阿姨卖粽子，上午买了46个，下午卖的粽子正好是上午的3倍，李阿姨一天卖了多少个粽子？15.三年级同学做操，如果每排站8人，可以站14排；如果每排站7人，可以站多少排？16.商店运来40袋大米，20袋面粉，每袋都是25千克，运来的大米和面粉一共多少千克？17.新华书店运来540本《白雪公主》，卖了30天，还剩120本，平均每天卖多少本？18.新科小学三年级有4个班，每个班有9个小组，三年级共有252人，平均每个小组有多少人？19.老师有467粒糖果，六一过节吃了139粒，现在把剩下的糖果分给8个小组，平均每个小组分多少粒糖果？20.两家药店卖同一种口服液，哪家药店的便宜？康全药店益民药店8瓶装，每盒80元6瓶装，每盒72元21.有一串四色珠子，每种颜色颗数相等，珠子的数量在70-90之间，猜一猜，可能有多少颗珠子？22.一共有970把椅子，上午运走了450把。

2023年6月大学英语六级考试真题完整版-附答案(第3套)

附答案（第3套）（此文档分二部分：真题试题、答案）一、真题试卷Part I Writing (30 minutes)Directions: For this part, you are allowed 30 minutes to write an essay on the importance ofmotivation and methods in learning. You can cite e某amples to illustrate your views. Youshould write at least 150 words but no more than 200 words.Section A 选词填空at temperatures below about -25℃ unless they are mi某ed with other metals. Now, though, a novel type of steel has been developed that resists __27__ at much lower temperatures, while retaining its strength and toughness—without the need for e某pensive __28__.Steel's fragility at low temperatures first became a major concern during the Second World War. After German U-boats torpedoed （用鱼雷攻击）numerous British ships, a 2,700-strong fleet of cheap- and-cheerful \ ships\replace the lost vessels, providing a lifeline for the __29__ British. But the steel shells of hundreds of theships __30__ in the icy north Atlantic, and 12 broke in half and sank.Brittleness remains a problem when building steel structures in cold conditions, such as oil rigs in the Arctic. Soscientists have __31__ to find a solution by mi某ing it with e 某pensive metals such as nickel.K）hollow L）relevant M）reshuffled N）strived O）violentSection B 段落匹配The future of personal satellite technology is here—are we ready for it?。

4微训练最后一练语用选考训练版

微训练最后一练（语用选考题）教师版1 .【带句式概括】简述上文的主要内容。

要求使用包含并列关系的句子，表达简洁流杨，不超过50个字。

“零添加”是一个什么概念呢？消费者认为，（就是食品中没有添加剂）。

然而，无论从现实情况还是科学概念上看，“零添加”并非事实。

因为，现代社会的食品都要经过生产、收获、转运、储存和加工等受杂流程，能进到人们的餐桌并吃到嘴里，或多或少含有添加剂。

一些人以为，无论是食品还是其他产品，（纯天然的才是最好）。

其实，衡量食物的营养、安全和美味并非只有纯天然一个标准。

食品生产和加工一大目的，是让食品营养充分发挥价值。

在一些食品安全事件中，不法厂商把并非食品添加剂的物质添加到食品中，才让食品添加剂声名狼藉。

今天，全世界的食品添加剂已经有2.5万种，可谓五花八门，而中国只批准了2000多种，不到十分之一。

这些食品添加剂有些是为了保障食品安全，不用反而不行。

例如，香肠和腊肉会使用一点亚硝酸拄以防腐，其作用主要是抑制肉毒杆菌生长繁殖。

肉每杆菌可以产生肉母素，毒性强于砒霜。

显然，在肉类加工中使用一点丑硝酸盐是合理的，否则，（会产生肉毒素），从而危害人体健康。

在某些情况下，有些厂家已经是在故弄玄虚了，把有些并不需要使用防腐剂的食品说成“零添加”，如腌渍食品（高盐）等。

因此，判定一种食品是否安全，首先看食品成分和食品添加剂的种类和剂量，不要被“零添加”轻易忽悠。

2 .【代词用法】下列句子中的“你”和文中画粗横线处的“你”,用法相同的一项是（）生活中的“刷脸”应用越来越常见。

手机支付、高铁站安检、入住宾馆，甚至在商场购物时，衣帽间前刷一刷脸，AI（人工智能）导购就能向你精准推荐个性化的服饰搭配,一些地方在执法监督、政务服务、医疗等领域广泛应用人脸识别系统，“刷脸”挂号、“刷脸”办理个税等都已成为现实。

A.风吼得这么凶，真叫人害怕，我可替你担心呢！B.你一条，他一条，一共提出了五六十条建议。

C.你这没有骨气的无耻的文人。

2017届高考总复习限时规范训练选修6 unit 3 含答案

第一部分选修6Unit 3Ⅰ.完形填空(2016沈阳东北育才学校高三上学期二模)There are no ocean waves in St.Louis.We have to drive a long way to get to the ocean.Every summer we put our stuff and ourselves into the car and drive 1,000 miles to reach Vero Beach, Florida.Once we get there, it's all about __1__at the beach.I've wanted to be a __2__for a long time.My mom used to surf when she lived in Florida during college.I __3__ my mom to let me surf, and she promised to find a surfing __4__ for me.He found me instead.One day when my mom was taking an old surfboard to a surf shop for __5__，a surfer __6__ the door open for her and helped her carry the board inside.They started __7__ and she learned he's a surfing __8__.My mom asked him if he had any __9__ working with people with disabilities.He did and told her he would love to work with me.That's how I __10__ my friend, Coach Bill Bolton, in 2014.First Coach Bill taught me the pop-up.I had so much fun surfing with Coach Bill in 2014, __11__ I didn't make it to __12__ on the board.When we went to Florida this summer, I had more surfing __13__with Coach Bill.We worked hard on the sand and in the water.On our third day together we __14__ our surfboards out past a sand bar where small waves were __15__.I came close to standing each time, and on the last __16__ of the day I got up on my feet and stayed up! I was so __17__！So was Coach Bill.We went to the same surfing spot the next day.Guess what! I __18__ so many times and rode wave after wave.Coach Bill called me a “surf goddess”．It was one of the __19__ days ever! I hope my story __20__ you to go surfing or to try something new.I know you can do it.()1.A.fun B．failureC．trial D．sunlight()2.A.swimmer B．riderC．surfer D．player()3.A.reminded B．encouragedC．told D．begged()4.A.fellow B．coachC．adviser D．driver()5.A.exhibition B．moneyC．repair D．advice()6.A.held B．keptC．let D．made()7.A.greeting B．laughingC．walking D．talking()8.A.student B．loverC．instructor D．guard()9.A.trouble B．interestC．record D．experience()10.A.met B．hiredC．thanked D．rewarded()11.A.however B．soC．and D．but()12.A.lying B．floatingC．standing D．moving()13.A.lessons B．pleasureC．skills D．tasks()14.A.picked B．tookC．removed D．threw()15.A.falling B．breakingC．rising D．floating()16.A.minute B．waveC．try D．part()17.A.happy B．shockedC．joy D．frightened()18.A.fell down B．failedC．acted D．got up()19.A.longest B．greatestC．hardest D．fastest()20.A.inspires B．pushesC．leads D．influences【主旨大意】作者一家每年都去佛罗里达的维罗海滩去度假。

2021高考人教版英语一轮复习：题型组合课时练选修6 Unit 3

题型组合课时练选修6 Unit 3Ⅰ.阅读理解A(2021·石家庄高三调研检测)During the two and a half years since I settled down in Germany，I've caught a cold several times and gotten to experience how different German cold remedies (疗法) are from the Chinese ones.Back in Taiwan，whenever I had a streaming nose and a dry throat，I'd rush to the hospital to get prescribed medicine.For a fever，I would receive a red pill，which I now know is a type of antibiotic (抗生素)．Another thing I know now is that the criminal behind my cold is a virus.The drugs I used only relieved the symptoms.When I went to a German hospital intending to get some medicine to treat my cold，I got nothing more than a pat on my shoulder and words from the doctor，saying that I should get some really good rest.The first time this happened，I was shocked.I wondered how I could put up with my sickness without the help of medicine.But the longer I stayed in Germany，the better I knew how to self-medicate as other Germans do.I learned to take vitamin C to build up my resistance.But what I like the most is drinking “Erkältungstee〞．For German people，Erkältungstee is what their grandmother gives them when they catch a cold.It's a tea ing my first winter in Germany，I got a really bad cold.My neighbor brought me a bowl of chicken soup to make me feel better.It contained a lot of gingers，onions，garlics，carrots and celeries.Germans believe these ingredients are perfect for helping your body recover.【语篇解读】本文是一篇记叙文，主要讲述了作者在德国如何应对感冒的故事。

新课标高考最后六天终极冲刺揭秘试卷英语试卷(六)付详解

2012年新课标高考最后六天终极冲刺揭秘试卷英语试卷（六）本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

共150分，考试时间120分钟。

第Ⅰ卷第一部分听力(共两节，满分30分)略第二部分英语知识运用(共两节，满分45分)第一节单项填空(共15小题；每小题1分，满分15分)从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

21．—Are you still thinking about yesterday's party?—Oh, that's ________.A．what makes me feel excitedB．whatever I fell excited aboutC．how I feel about itD．when I feel excited22．I am heavily ________ at the moment, but I hope to be out of it when I get paid.A．in debt B．in troubleC．of difficulty D．in danger23．She has been ________ over his strange letter for several weeks, but she still figures out nothing about it.A．puzzling B．worriedC．troubled D．anxious24．—Were you told to attend the meeting? I didn't see you anyway.—________，but I had an accident on the way.A．I was going B．I wouldC．I should have D．I'd like to25．—Have you finished the report?—Oh, sorry. It was so noisy in the office that I couldn't ________ down to write anything.A．settle B．putC．sit D．lie26．—I'll ask the teacher about the attributive clause. I'm very puzzled about it.—That's just ________ most of our classmates have doubt.A．what B．whyC．where D．how27．—We are afraid we can't finish the task ________ a month.—Take your time, but next month you'll have a new one.A．within B．byC．among D．after28．—I come all the way to say “Thank you” and we ________ it without you.—Think nothing of it.A．should have done B．mustn't have doneC．couldn't have done D．needn't have done29．In many countries in the world, breakfast is a snack ________ a meal, but the traditional English breakfast is a full meal.A．other than B．more thanC．rather than D．less than30．The fact ________ this country spends more on its military than on education and health care combined is a serious and worrying thought.A．where B．whichC．that D．why31．There was a lot of fun at the party. You ________，but why didn't you?A．should come B．ought to have comeC．may have come D．must have come32．I don't understand how you should spend so much money in only one month. Please ________ each sum of the money you spent to me.A．make out B．account forC．describe D．record33．They were determined to carry out the plan at first, but then we ________ persuade them to change their minds.A．would B．couldC．were able to D．had to34．It even leaves the scientists in wonder ________ they should call the newly-born creature, which looks halfhuman and half-animal.A．that B．whyC．what D．how35．—I am so glad I caught you at home. I need your help!—________，Robin?A．What's up B．What elseC．How come D．Why not第二节完形填空(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，选出最佳选项。

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