6-答案
2021年6月大学英语六级真题及答案完整版卷
2021年6月大学英语六级真题及答案完整版卷I Writing1、【题干】Directions: For this part, you are allowed30 minutes to write an essay on the importance of motivation and methods in learning、 You can cite exles to illustrate your views、 You should write at least150 words but no more than200 words、【答案】 What is the most important quality for learning? From my perspective, what we need are motivation and methods、Motivation refers to desire and determination in people to be continually interested in and mitted to certain aims、 It is an indispensable part of learning、 If we want to plete heavy school work, motivation is a necessity、 Without motivation, it is hard to overe difficulties、 The inventor of the electric bulb, one of the famous scientists in the world, Thomas Edison, is a good case in point、 Before the bulb came into being, he had failed thousands of times、 Withmotivation, he finally lit the whole world、With motivation we also need proper methods to study efficiently、 Generally speaking, the more effectively you study, the greater success you will achieve、 Method is a great element of learning、 Without proper methods, we may go nowhere in our pursuit of success in study、In a word, motivation and methods play a vital role in successful study、 The same is true of other aspects of our life, such as friendship, love and career、 As the saying goes:" Motivation is what gets you started、Methods are what helps you keep going、"PartⅡ Listening prehension听力答案：2021年6月大学英语六级考试真题听力原文（卷一）Part Ⅲ Reading Section APasta is no longer off the menu, after a new review of studies suggested that the carbohydrate can form part of a healthy diet, and even help people lose weight、 For years, nutritionists have remended that pasta be kept to a _____(27), to cut calories, prevent fat build-up and stop blood sugar_____(28)up、The low-carbohydrate food movement gavebirth to such diets as the Atkins, Paleo and Keto, which advised swapping foods like bread, pasta and potatoes for vegetables, fish and meat、 More recently the trend ofswapping spaghetti for vegetables has been _____(29)by clean-eating experts、But now a _____(30)review and analysis of _____(31)studies by Canadian researchers found that not only does pasta not cause weight gain, but three meals a week can help people drop more than half a kilogram over four months、 The reviewers found that pasta had been unfairly demonized(妖魔化)because it had been _____(32)in with other, more fit-promoting carbohydrates、"The study found that pasta didnt3 to weight gain or increase in body fat," said lead author Dr John Sievenpiper、 "In _____(33)the evidence, we can now say with some confidence that pasta does not have an_____(34)effect on body weigh outes when it is consumed as part of a healthy dietary pattern、" In fact, analysis actually showed a small weigh loss _____(35)to concerns、Perhaps pasta can be part of a healthy dietThose involved in the _____(36)trials on average ate3、3 servings of pasta a week instead of other carbohydrates, one serving equaling around half a cup、They lost around half a kilogram over an average follow-up of12 weeks、27、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】I28、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】L29、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】B30、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】N31、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】G32、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】E33、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】O34、【题干】_____、A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】A35、【题干】_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】D36、_____、【选项】A、adverseB、chionedC、clinicalD、contraryE、contributeF、intimateG、lumpedH、magnifiedI、minimumJ、radiatingK、rationL、shootingM、subscribeN、systematicO、weighing【答案】CPart Ⅲ Reading Section BThe Best Retailers bine Bricks and Clicks[A] Retail profits are falling sharply、Stores are closing、 Malls are emptying、 The depressing stories just keep ing、 Reading the earnings announcements of large retail stores like Macys, Nordstrom, and Target is about as uplifting as a tour of an intensive care unit、 The interact is apparently taking down yet another industry、 Brick and mortar stores(实体店)seem to be going the way of the yellow pages、 Sure enough, the Census Bureau just released data showing that online retail sales surged15、2 percent between the first quarter of全文结束》》 and the first quarter of全文结束》》、[B] But before you dump all of your retail stocks, there are more facts you should consider、 Looking only at that15、2 percent "surge" would be misleading、 It was an increase that was on a small base of6、9 percent、 Even when a tiny number grows by alarge percentage terms, it is often still tiny、[C] More than20 years after the inter was opened to merce, the Census Bureau tells us that brick and mortar sales accounted for92、3 percent of retail sales in the first quarter of全文结束》》、 Their data show that only 0、8 percent of retail sales shifted from offline to online between the beginning of全文结束》》 and全文结束》》、[D] So,despite all the talk about drone (无人机)deliveries to your doorstep, all the retailexecutives expressing anxiety over consumers going online, and even a Presidential candidate exclaiming that Amazon has a "huge antitrust problem," the Census data suggest that physical retail is thriving、 Of course, the closed stores, depressed executives, and sinking stocks suggestotherwise、 Whats the real story?[E] Many firms operating brick and mortar stores are in trouble、 The retail industry is getting reinvented, as we describe in our new book Matchmakers、 Its standing in the Path of what Schumpeter called a gale (大风)of creative destruction、 That storm has been brewing for some time, and as it has reached gale force, most large retailers are searching for a response、 As the CFO of Macys put it recently, "Were frankly scratching our heads、"[F] But its not happening as experts predicted、In the peak of the dotZZZ bubble, brick and mortar retail was one of those industries the inter was going to kill-and quickly、 The dot corn bust discredited most predictions of that sort and in the years that followed, on-ventional retailers confidence in the future increased as Census continued to report weak online sales、 And then the gale hit、[G] It is being increasingly clearthat retail reinvention isnt a simple battle to the death between bricks and clicks、 It is about devising retail models that work for people who are making increasing use of a growing array of inter-connected tools to change how they search, shop, and buy、 Creative retailers are usingthe new technologies to innovate just about everything stores do from managing inventory, to marketing, to getting paid、[H] More than drones dropping a new supply of underwear on your doorstep, Apples massively successful brick-and-mortar-and-glass retail stores and Amazons small steps in the same direction are what should keep old-fashioned retailers awake at night、 Not to mention the large number of creative new retailers, like Bonobos, that are blending online and offline experiences in creative ways、[I] Retail reinvention is not a simple process, and its also not happening on what used to be called "Inter Time、" Some inter-driven changes have happened quickly, of course、 Craigslist quickly overtook newspaper classified ads and turned newspaper economics upside down、 But many widely anticipated changes werent quick, and some havent really started、 With the benefit of hindsight (后见之明), it looks like the interact will transform the economy at something like the pace of other great inventions like electricity、 B2B merce, for exle, didnt move mainly online by全文结束》》 as many had predicted in2000, nor even by全文结束》》, but that doesnt mean it wont do so over the next few decades、[J]But the gale is still blowing、 The sudden decline infoot traffic in recent years, even though it hasnt been acpanied by a massive decline in physical sales, is a critical warning、 People can shop more efficiently online and therefore dont need to go to as many stores to find what they want、 Theres a surplus of physical shopping space for the crowds, which is one reason why stores are downsizing and closing、[K] The rise of the mobile phone has recently added a new level of plexity to the process of retail reinvention、 Even five years ago most people faced a choice、 Sit at your puter, probably at home or at the office, search and browse, and buy、 Or head out to the mall, or Main Street, look and shop, and buy、 Now, just about everyone has a smartphone, connected to the inter almost everywhere almost all the time、 Even when a retailer gets a customer to walk in the store, she can easily see if theres a better deal online or at another store nearby、[L] So far, the main thing many large retailers have done in response to all this is to open online stores, so people will e to them directly rather than to Amazon and its smaller online rivals、 Many are having the same problem that newspapershave、 Even if they get online traffic, they struggle to make enough money online to pensate for what they are losing offline、[M] A few seem to be making this work、Among large traditional retailers, Walmart recently reported the best results, leading its stock price to surge, while Macys, Target, and Nordstroms dropped、 Yet Walmarts year-over-year online sales only grew7 percent, leading its CEO to lament (哀叹), "Growth here is too slow、" Part of the problem is that almost two decades after Amazon filed the one click patent, the onlineretail shopping and buying experience is filled with frictions、 A recent study graded more than600 inter retailers on how easy it was for consumers to shop, buy, and pay、 Almost half of the sites didnt get a passing grade and only18 percent got an A orB、[N] The turmoil on the ground in physical retail is hard to square with the Census data、 Unfortunately, part of the explanation is that the Census retail data are unreliable、 Our deep100k into those data and their preparation revealed serious problems、 It seems likely that Census simply misclassifies a large chunk of online sales、 It is certain that the Census procedures, whichlump the online sales of major traditional retailers like Walmart with non-store retailers"1ike food trucks、 can mask major changes in individual retail categories、 The bureau could easily present their data in more useful ways、 but they have chosen not to、[O] Despite the turmoil, brick and mortar wont disappear any time soon、The big questions are which, if any, of the large traditional retailers will still be on the scene in a decade or two because they have successfully reinvented themselves, which new players will operate busy stores on Main Streets and maybe even in shopping malls, and how the shopping and buying experience will have changed in each retail category、 Investors shouldnt write off brick and mortar、 Whether they should bet on the traditional players who run those stores now is another matter、37、【题干】Although online retailing has existed for some twenty years, nearly half of the inter retailers still fail to receive satisfactory feedback from consumers, according to a recent survey、【选项】B、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】M38、【题干】Innovative retailers integrate inter technologies with conventional retailing to create new retail models、【选项】A、AB、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】G39、【题干】Despite what the Census data suggest, the value of physical retails stocks has been dropping、【选项】B、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】D40、【题干】Innovative—driven changes in the retail industry didnt take place as quickly as widely anticipated、【选项】A、AB、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】I41、【题干】Statistics indicate that brick and mortar sales still made up the lions share of the retail business、【选项】B、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】C42、【题干】panies that successfully bine online and offline business models may prove to be a big concern for traditional retailers、【选项】A、AB、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】H43、【题干】Brick and mortar retailers faith in their business was strengthened when the dot bubble burst、【选项】A、AB、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】F44、【题干】Despite the tremendous challenges from online retailing, traditional retailing will be here to stay for quite some time、【选项】A、AB、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】O45、【题干】With the rise of online merce, physical retail stores are likely to suffer the same fate as i the yellow pages、【选项】A、AB、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】A46、【题干】The wide use of smartphones has made it more plex for traditional retailers to reinvent their business、【选项】A、AB、BC、CD、DE、EF、FG、GH、HI、IJ、JK、KL、LM、MN、NO、O【答案】KPart Ⅲ Reading Section CPassage OneQuestions47 to51 are based on the following passageProfessor StephenHawking has warned that the creation of powerful artificial intelligence (AI)will be “either the best, or the wors第 21 页共 21 页。
2019年6月大学英语六级(CET-6)真题第二套试卷及参考答案
2019年6月大学英语六级考试真题(第2套)Part I Writing (30 minutes) Directions:For this part, you are allowed 30 minutes to write an essay on the importance of mutual understanding and respect in interpersonal relationships. You should write at least 150 words but no more than 200 words.________________________________________________________________________________ ________________________________________________________________________________ _______________________________________________________________________________ PartⅡ 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) Why Roman Holiday was more famous than Breakfast at Tiffany’s.B)Why Audrey Hepburn had more female fans than male ones.C)Why the woman wanted to be like Audrey Hepburn.D)Why so many girls adored Audrey Hepburn.2.A)Her unique personality.B)Her physical condition.C)Her shift of interest to performing arts.D)Her family’s suspension of financial aid.3.A) She was not an outgoing person.B)She was easy-going on the whole.C)She was modest and hardworking D)She was usually not very optimistic.4.A)She was influenced by the roles she played in the films.B)Her parents taught her to symbolize with the needy.C)She learned to volunteer when she was a child.D)Her family benifited from other people’s help.Questions 5 to 8 are based on the conversation you have just heard.5.A) Give a presentation.B)Rise some questions.C)Start a new company.D)Attend a board meeting.6.A) It will cut production costs.B)It will raise productivity.C)No staff will be dismissed.D)No new staff will be hired.7.A) The timeline of restructuring.B)The reasons for restructuring.C)The communication channels.D)The company’s new missions.8.A) By consulting their own department managers.B)By emailing questions to the man or the woman.C)By exploring various channels of communication.D)By visiting the company’s own computer network.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) It helps passengers to take care of their pet animals.B) It has animals to help passengers carry their language.C) It uses therapy animals to soothe nervous passengers.D) It allows passengers to have animal travel with them.10.A) Avoiding possible dangers.B) Finding their way around.C) Identifying drug smugglers.D) Looking after sick passengers.11.A) Schedule their flights around the animal visits.B) Photograph the therapy animals at the airport.C) Keep some animals for therapeutic purposes.D) Bring their animals on board their plane.Questions 12 to 15 are based on the passage you have just heard.12.A) Beside a beautifully painted wall in Arles.B) Beside the gate of an ancient Roman city.C) At the site of an ancient Roman mansion.D) At the entrance to a reception hall in Rome.13. A) A number of different images. B) A number of mythological heroes.C) Various musical instruments. D) Paintings by famous French artists.14. A) The originality and expertise shown. B) The worldly sophistication displayed.C)The stunning images vividly depicted. D) The impressive skills and costly dyes.15. A) His artistic taste is superb. B) His identity remains unclear.D) He was a collector of antiques. D) He was a rich Italian merchant.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) They encourage international cooperation.B) They lay stress on basic scientific research.C) They place great emphasis on empirical studies.D) They favour scientists from its member countries.17. A) Many of them wish to win international recognition.B) They believe that more hands will make light work.C) They want to follow closely the international trend.D) Many of their projects have become complicated.18. A) It requires mathematicians to work independently.B) It is faced with many unprecedented challenges.C) It lags behind other disciplines in collaboration.D) It calls for more research funding to catch up.Questions 19 to 21 are based on the recording you have just heard.19. A) Scientists tried to send a balloon to Venus.B) Scientists discovered water on Venus.C) Scientists found Venus had atmosphere.D) Scientists observed Venus from a space vehicle.20.A) It resembles Earth in many aspects.B)It is the same as fiction has portrayed.C)It is a paradise of romance for alien life.D)It undergoes geological changes like Earth.21.A) It might have been hotter than it is today.B)It might have been a cozy habitat for life.C)It used to have more water than Earth.D)It used to be covered with rainforests.Questions 22 to 25 are based on the recording you have just heard.22.A) Causes of sleeplessness.B)Cross-cultural communication.C)Cultural psychology.D)Motivation and positive feelings.23.A) They attach great importance to sleep.B)They often have trouble falling asleep.C)They pay more attention to sleep efficiency.D)They generally sleep longer than East Asians.24.A) By asking people to report their sleep habits.B)By observing people’s sleep patterns in labs.C)By having people wear motion-detecting watches.D)By videotaping people’s daily sleeping processes.25.A) It has made remarkable progress in the past few decades.B)It has not yet explored the cross-cultural aspect of sleep.C)It has not yet produced anything conclusive.D)It has attached attention all over the world.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.The dream of personalised flight is still vivid in the minds of many inventors, some developing cycle-powered craft, others 26 money into jetpacks (喷气飞行背包). However, the flying car has always remained the 27 symbol of personal transport freedom.Several companies around the world have produced 28 that can drive on roads and fly. Airbus has a futuristic modular (组件式的) concept involving a passenger capsule that can be 29 from the road-going chassis (底盘) and picked up by a helicopter-type machine.But all these concepts are massively expensive, require safety certification standards for road and air, need 30 controls, involve complex folding wings and propellers, and have to be flown from air-strips. So they are likely to remain rich people’s playthings rather than practical transport solutions for the masses.“A car that takes off from some London street and lands in another 31 street is unlikely to happen,” says Prof. Gray, a leading aeronautical engineer. “Sky taxis are much more likely.” But that won’t stop inventors from dreaming up new ways to fly and trying to persuade investors to back their sometimes 32 schemes.Civilian aviation is being disrupted, not by the age-old desires for speed, romanticism and 33 , but by the pressing need to respond to a changing climate. New electric engines coupled with artificial intelligence and 34 systems will contribute to a more efficient, integrated transport system that is less polluting and less noisy. That may sound simple, but as Prof. Gray says, “When Itravel somewhere I like this notion that when I finish my journey I feel better than when I started it.Directions:In this section, you are going to read a passage with ten statements 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.Companies Are Working with Consumers to Reduce WasteA) As consumers, we are very wasteful. Annually, the world generates 1.3 billion tons of solid waste. This is expected to go up to 2.2 billion by 2025. The developed countries are responsible for 44% of waste, and in the U.S. alone, the average person throws away their body weight in rubbish every month.B) Conventional wisdom would seem to suggest that companies have no incentive to lengthen the life cycle of their products and reduce the revenue they would get from selling new goods. Yet, more and more businesses are thinking about how to reduce consumer waste. This is partly driven by the rising price of raw materials and metals. It is also partly due to both consumers and companies becoming more aware of the need to protect our environment.C) When choosing what products to buy and which brands to buy from, more and more consumers are looking into sustainability. This is opposed to just price and performance they were concerned about in the past. In a survey of 54 of the world’s leading brands, almost all of them reported that consumers are showing increasing care about sustainable lifestyles. At the same time, surveys on consumers in the U.S. and the U.K. show that they also care about minimizing energy use and reducing waste.D) For the most part, consumers control what happens to a product. But some companies are realizing that placing the burden of recycling entirely on the consumer is not an effective strategy, especially when tossing something away seems like the easiest and most convenient option.E) Some retailers and manufacturers in the clothing, footwear, and electronics industries have launched environmental programs. They want to make their customers interested in preserving their products and preventing things that still have value from going to the garbage dump. By offering services to help expand the longevity of their products, they’re promising quality and durability to consumers, and receiving the reputational gains for being environmentally friendly. F) For example, the Swedish jeans company Nudie Jeans offers free repair at twenty of their shops. Instead of discarding their old worn-out jeans, customers bring them in to be renewed. The company even provides mail-order repair kits and online videos, so that customers can learn how to fix a pair of jeans at home. Their philosophy is that extending the life of a pair of jeans is not only great for the environment, but allows the consumer to get more value out of their product. When customers do want to toss their pair, they can give them back to the store, which will repurpose and resell them. Another clothing company, Patagonia, a high-end outdoor clothingstore, follows the same principle. It has partnered with DIY website iFixit to teach consumers how to repair their clothing, such as waterproof outerwear, at home. The company also offers a repair program for their customers for a modest fee. Currently, Patagonia repairs about 40,000 garments a year in their Reno, Nevada, service center. According to the company’s CEO, Rose Marcario, this is about building a company that cares about the environment. At the same time, offering repair supports the perceived quality of its products.G) In Brazil, the multinational corporation Adidas has been running a shoe-recycling program called “Sustainable Footprint” since 2012. Customers can bring shoes of any brand into an Adidas store to be shredded and turned into alternative fuels for energy creation instead of being burned as trash. They are used to fuel cement ovens. To motivate visitors to bring in more old shoes, Adidas Brazil promotes the program in stores by showing videos to educate customers, and it even offers a discount each time a customer brings in an old pair of shoes. This boosts the reputation and image of Adidas by making people more aware of the company’s values.H) Enormous opportunities also lie with e-waste. It is estimated that in 2014 the world produced some 42 million metric tons of e-waste (discarded electrical and electronic equipment and its parts) with North America and Europe accounting for 8 and 12 million metric tons respectively. The materials from e-waste include iron, copper, gold, silver, and aluminum—materials that could be reused, resold, salvaged, or recycled. Together, the value of these metals is estimated to be about $52 billion. Electronics giants like Best Buy and Samsung have provided e-waste take-back programs over the past few years, which aim to refurbish (翻新) old electronic components and parts into new products.I) For other companies interested in reducing waste, helping the environment, and providing the sustainable lifestyles that consumers seek, here are some first steps for building a relationship with customers that focuses on recycling and restoring value to products:J) Find partners. If you are a manufacturer who relies on outside distributors, then retailers are the ideal partner for collecting old products. Power tool maker DeWalt partners with companies, such as Lowes and Napa Auto Parts, to collect old tools at their stores for recycling. The partnership benefits both sides by allowing unconventional partners (for example, two companies from two different industries) to work together on a specific aspect of the value chain, like, in this example, an engine firm with an accessory one.K) Create incentives. Environmental conscientiousness isn’t always enough to make customers recycle old goods. For instance, DeWalt discovered that many contractors were holding on to their old tools, even if they no longer worked, because they were expensive purchases and it was hard to justify bringing them in to recycle. By offering instant discounts worth as much as $100, DeWalt launched a trade-in program to encourage people to bring back tools. As a result, DeWalt now reuses those materials to create new products.L) Start with a trial program, and expect to change the details as you go. Any take-back program will likely change over time, depending on what works for your customers and company goals. Maybe you see low customer participation at first, or conversely, so much success that the cost of recycling becomes too high. Best Buy, for instance, has been bearing the lion’s share of e-waste volume since two of its largest competitors, Amazon and Wal-mart, do not have their own recycling programs. Since the launch of its program, Best Buy changed its policy to add a $25 fee for recycling old televisions in order to keep the program going.M) Build a culture of collective values with customers. A stronger relationship between the retailer/producer and the consumer isn’t just about financial incentives. By creating more awareness around your efforts to reduce waste, and by developing a culture of responsibility, repair, and reuse, you can build customer loyalty based on shared values and responsibilities.N) These examples are just the tip of the iceberg, but they demonstrate how helping customers get more use of their materials can transform value chains and operations. Reducing waste by incorporating used materials into production can cut costs and decrease the price of procurement (采购): less to be procured from the outside and more to be re-utilized from the inside.O) Companies play a big role in creating a circular economy, in which value is generating less from extracting new resources and more from getting better use out of the resources we already have—but they must also get customers engaged in the process.36. Some companies believe that products’ prolonged lifespan benefits both the environment and customers.37. A survey shows shoppers today are getting more concerned about energy conservation and environmental protection when deciding what to buy.38. Companies can build customer loyalty by creating a positive culture of environmental awareness.39. When companies launch environmental programs, they will have their brand reputation enhanced.40. One multinational company offers discounts to customers who bring in old footwear to be used as fuel.41. Recycling used products can help manufacturers reduce production costs.42. Electronic products contain valuable metals that could be recovered.43. It seems commonly believed that companies are not motivated to prolong their products’ lifespan.44. It is advisable for companies to partner with each other in product recycling.45. Some businesses have begun to realize it may not be effective to let consumers take full responsibility for recycling.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 2with a single line through the centre.Passage OneQuestions 46 to 50 are based on the following passage.Effective Friday, Screen Actors Guild-American Federation of Television and Radio Artists (SAG-AFTRA) has declared a strike against 11 video game publishers over games that went into production after Feb. 17, 2015. The companies include some of the heavyweights of the industry, like Electronic Arts Productions, Insomniac Games, Activision and Disney.The strike comes in light of an unsuccessful 19 months of negotiations after the existing labor contract known as the Interactive Media Agreement expired in late 2014. overall, the strike is an effort to provide more secondary compensation along with other concerns, such as transparency upon hiring talent and on-set (制作中) safety precautions.The video gaming industry has ballooned in recent years. The Los Angeles Times reports that the industry is in the midst of an intense increase in cash flow. In 2015, gaming produced $23.5 billion in domestic revenue.But SAG-AFTRA says voice actors don’t receive residuals (追加酬金) for their gaming work. Instead, they receive a fixed rate, which is typically about $825 for a standard four-hour vocal session. So the voice actors are pushing for the idea of secondary compensation—a performance bonus every time a game sells 2 million copies or downloads, or reaches 2 million subscribers, with a cap at 8 million.“It’s a very small number of games that would trigger this secondary compensation issue,” said voice actor Crispin Freeman, who’s a member of the union’s negotiating committee. “This is an important aspect of what it means to be a freelance (从事自由职业的) performer, who isn’t regularly employed every single day working on projects.”Another major complaint from the actors is the secrecy of the industry. “I can’t imagine if there’s any other acting job in the world where you don’t know what show you’re in, when you’re hired,”says voice actor Keythe Farley, who chairs the SAG-AFTRA negotiating committee.“And yet that happens every day in the video game world,”Farley told reporters during a press conference Friday. “I was a main character in Fallout 4, a character by the name of Kellogg, and I never knew that I was doing vocal recording for that game throughout the year and a half.”Scott Witlin, the lawyer representing the video game companies, says voice actors “represent less than one tenth of 1 percent of the work that goes into making a video game.” So “even though they’re the top craftsmen in their field,”Witlin says, “if we pay them under a vastly different system than the people who do the 99.9 percent of the work, that’s going to create far more problems for the video game companies.”46. Why did SAG-AFTRA declare a strike against some video game publishers?A) The labor contract between them had been violated.B) Its appeal to renegotiate the contract had been rejected.C) It had been cheated repeatedly in the 19 months of talks.D) The negotiations between them had broken down.47. What do we learn from the passage about the video gaming industry?A) It has reaped huge profits in recent years.B) It has become more open and transparent.C) It has attracted many famous voice actors.D) It has invested a lot in its domestic market.48. What are the voice actors demanding?A) More regular employment.B) A non-discriminatory contract.C) Extra pay based on sales revenues.D) A limit on the maximum work hours.49. What does Keythe Farley say about voice actors?A) They are kept in the dark about many details of their job.B) They are discriminated against in the gaming industry.C) They are not paid on a regular basis.D) They are not employed full-time.50. What is the argument of lawyer Scott Witlin?A) V oice actors should have a pay raise if they prove to be top craftsmen.B) Changing the pay system would cause the industry more problems.C) V oice actors are mere craftsmen, not professional performers.D) Paying voice actors on an hourly basis is in line with the law.Passage TwoQuestions 51 to 55 are based on the following passage.Officials at the White House announced a new space policy focused on managing the increasing number of satellites that companies and governments are launching into space. Space Policy Directive-3 lays out general guidelines for the United States to mitigate (缓解) the effects of space debris and track and manage traffic in space.This policy sets the stage for the Department of Commerce to take over the management oftraffic in space. The department will make sure that newly launched satellites don’t use radio frequencies that would interfere with existing satellites, and schedule when such new satellites can be launched. This only applies to American space activities, but the hope is that it will help standardize a set of norms in the dawning commercial spaceflight industry throughout the world.Space, especially the space directly around our planet, is getting more crowded as more governments and companies launch satellites. One impetus for the policy is that companies are already starting to build massive constellations (星座), comprising hundreds or thousands of satellites with many moving parts among them. With so much stuff in space, and a limited area around our planet, the government wants to reduce the chances of a collision. Two or more satellites slamming into each other could create many more out-of-control bits that would pose even more hazards to the growing collection of satellites in space.And it’s not like this hasn’t happened before. In 2009 an old Russian craft slammed into a communications satellite, creating a cloud of hundreds of pieces of debris and putting other hardware at risk. Journalist Sarah Scoles reports that NASA currently tracks about 24,000 objects in space, and in 2016 the Air Force had to issue 3,995,874 warnings to satellite owners alerting them to a potential nearby threat from another satellite or bit of debris.That’s why this new policy also includes directions to update the current U.S. Government Orbital Debris Mitigation Standard Practices, which already require any entity that launches a satellite or spacecraft to vigorously analyze the likelihood that any of their actions, from an unexpected failure or normal operations, will create more space debris. It includes accounting for any piece of debris they plan to release over 5mm that might stay in orbit for 25 years or more. It might seem surprising to think about an item staying in space for that long, but the oldest satellite still in orbit—Vanguard 1—turned 60 in 2018.Agencies and companies throughout the world are working on developing technology that would dispose of or capture space debris before it causes serious damage. But for now, the U.S. government is more focused on preventing new debris from forming than taking the trash out of orbit.51.What is the purpose of the new U.S. space policy?A)To lay out general guidelines for space exploration.B)To encourage companies to join in space programs.C)To make the best use of satellites in space.D)To improve traffic conditions in space.52.What is the Department of Commerce expected to do under the new policy?A)Reduce debris in space.B)Monitor satellite operations.C)Regulate the launching of new satellites.D)Update satellite communications technology.53.What does the U.S. government hope to do with the new space policy?A)Set international standards for the space flight industry.B)Monopolize space industry by developing a set of norms.C)Facilitate commercial space flights throughout the world.D)Promote international collaboration in space exploration.54.What is a space vehicle launching entity required to do according to the current U.S. Government Orbital Debris Mitigation Standard Practices?A)Give an estimate of how long its debris will stay in space.B)Account for the debris it has released into space at any time.C)Provide a detailed plan for managing the space debris it creates.D)Make a thorough analysis of any possible addition to space debris.55.What are space agencies and companies aiming to do at present?A)Recycle used space vehicles before they turn into debris.B)Develop technology to address the space debris problem.C)Limit the amount of debris entering space.D)Cooperate closely to retrieve space debris.Part Ⅳ Translation (30 minutes) Directions: For this part, you are allowed 30 minutes to translate a passage from Chinese into English.You should write your answer on Answer Sheet 2.汉语现在是世界上用作本族语人数最多的语言。
华理有机6-9章答案
答案： (a) C3H7NO 答案：
(b)
C2H3OCl
习题 6-2 试说明 2 己烯质谱中 m/z=41,55 和 84 的离子峰是怎样形成的。
b
CH3CH=CH CH2
a
CH2CH3 m/z=84
a －CH2CH3
CH3CH CHCH2 m/z=55
b － CH2CH2CH3
第6章
有机化合物的结构解析 思考题答案
思考题6-1 分别写出CH3Br，CH2Br2这二种化合物的同位素峰的类型及相应的峰强度的比值。 答案：CH3Br M:M+2 = 1:1 CH2Br2 M:M+2:M+4 = 1:2:1 思考题6-2 比较甲苯、顺丁二烯、环己烷和乙醇分子离子的稳定性。 答案：甲苯 >顺丁二烯 >环己烷 >乙醇 思考题6-3 当体系的共轭双键增多时，紫外光谱会发生什么变化，解释其原因。 答案：随着共轭双键的增长，分子的 π -π 共轭增强，减低了π →π 跃迁所需的能量，发色团吸收波 长向长波长方向移动，产生红移现象。 思考题6-4 CH3CN的最低能量跃迁是什么跃迁，请判断CH3CN是否有发色团。 答案：CH3CN分子内最低的能量跃迁是n→π ，CN基团是发色团。 思考题6-5 判断2,3-二甲基-2-丁烯是否有双键的红外吸收，解释其原因。 答案： 2,3-二甲基-2-丁烯是一个对称性很高的分子， 没有偶极距的变化， 因此没有双键的红外吸收。 思考题6-6 比较乙酸乙酯，乙酰氯，乙酰胺三个化合物的羰基伸缩振动峰的大小？ 答案：乙酰氯（1800cm ）> 乙酸乙酯（1735cm ）> 乙酰胺（1690cm ） 习题答案 习题 6-1 化合物 A,B 的质谱数据列于表中,试确定其分子式。
电力工程基础 第6章习题答案
第六章6—1 在电力系统中继电保护的任务是什么?对继电保护的基本要求是什么？答：继电保护装置的任务是：自动、迅速、有选择地将故障元件从电力系统中切除，使其损坏程度尽可能减小，并最大限度地保证非故障部分迅速恢复正常运行；能对电气元件的不正常运行状态做出反应，并根据运行维护的具体条件和设备的承受能力，发出报警信号、减负荷或延时跳闸。
对继电保护的基本要求是：选择性、速动性、灵敏性和可靠性.6-2 什么是继电保护的接线系数？星形、不完全星形和两相电流差接线方式的接线系数有何不同?答:在继电保护回路中，流入继电器中的电流与对应电流互感器的二次电流的比值，称为接线系数。
星形接线和不完全星形接线方式无论发生何种相间短路，其接线系数都等于1，两相电流差接线在正常运行或三相短路时的接线系数为，A、C两相短路时的接线系数为2，A、B或B、C两相短路时的接线系数为1。
6-3什么是继电器的动作电流、返回电流和返回系数？答：能使电流继电器产生动作的最小电流，称为继电器的动作电流；能使电流继电器返回到原始位置的最大电流，称为继电器的返回电流；同一继电器的返回电流与动作电流的比值,称为电流继电器的返回系数.6-4 过电流保护装置的动作电流应如何整定？答：过电流保护装置的动作电流必须满足以下两个条件:保护装置的动作电流必须躲过线路上的最大负荷电流;保护装置在外部故障切除后应可靠返回到原始位置。
6—5 什么叫三段式电流保护？各段的保护范围和动作时限是如何进行配合的？答：由无时限电流速断保护(称作第Ⅰ段）、带时限电流速断保护(称作第Ⅱ段）和定时限过电流保护(称作第Ⅲ段）配合构成整套保护,称为三段式过电流保护。
第I段只能保护本线路(WL1)的一部分，保护范围为，动作时间为继电器的固有动作时间；第II 段不仅能保护本线路（WL1）的全长，而且向下一级相邻线路(WL2）延伸了一段,保护范围为，动作时限与下级线路Ⅰ段保护配合，即;第III段不仅能保护本线路（WL1）和相邻线路（WL2)的全长,而且延伸到再下一级线路(WL3）一部分，保护范围为，动作时限按阶梯原则整定，即.6-6在小电流接地系统中发生接地故障时,通常采取哪些保护措施？简要说明其基本原理。
2020年7月大学英语六级cet6考试真题及答案
2020年7月大学英语六级cet6考试真题及答案六级作文主题：The best preparation for tomorrow is doing your best today对明天做好的准备就是今天做到最好。
听力真题原文：恐龙遗址恐龙遗址The partial skeletons of more than 20 dinosaurs and scattered bones of about 300 more have been discovered in Utah and Colorado at what is now the dinosaur natural monument. Menu of the best specimens may be seen today at museums of natural history in the largest cities in the United States and Canada. This dinosaur pit is the largest and best-preserved deposit of dinosaurs known today. Many people get the idea from the massive bones in the pit wall that some disaster such as a volcanic explosion or a sudden flood killed a whole herd of dinosaurs in this area. This could have happened but it probably did not. The main reasons for thinking otherwise are the scattered bones and the thickness of the deposit. In other deposits where the animals were thought to have died together， the skeletons were usually complete and often all the bones were in the proper places， rounded pieces of fossil bone have been found here. These fragments got their smooth round shape by rolling along the stream bottom. In a mass killing， the bones would have been left on the stream or lake bottom together at the same level. But in this deposit， the bones occur throughout a zone of sand stone about 12 feet thick. The mixture of swamp dwellers and dryland types also seems to indicate that the deposit is a mixture from different places. The pit area is a large dinosaur graveyard， not a place where they died. Most of the remains probably floated down on eastward flowing river until they were left on a shallow sandbar. Some of them may have come from far away dryland areas to the west， perhaps they drowned trying to cross the small stream or were washed away during floods. Some of the swamp dwellers may have got stuck in the very sandbar that became their grave， others may have floated for miles before being stranded， even today similar events take place. When floods come in the spring， sheep， cattle and deer are often trapped by rising waters and often drown. Their dead bodies float down-stream until the flood recedes and leaves them stranded on the bar or shore where they lie， half buried in sand until they decay. Early travelers on the Missouri river reported that shores and bars often lined with the decaying bodies of buffalo that have died during spring floods /XQuestion 19： Where can many of the best dinosaur s specimens be found in North America?Question 20： What occurs to many people when they see the massive bones in the pit wall?Question 21： What does the speaker suggest about the large number of dinosaur bones in the pit?听力篇章原文：基因遗传Passage 2Public interest was aroused by the latest discovery of the changed gene in obese life. The news was made by Rockefeller University geneticist Jeffery Friedman. The researchers believe this gene influences development of a hormone that tells the organism how fat or full it is. Those was the changed gene may not sense when they have eaten enough or if they have sufficient fatty tissue. And thus，you can't tell when to stop eating.The researchers also reported finding a gene nearly identical to the mouse obesity gene in humans. The operation of this gene in humans has not yet been demonstrated. however. Still， professionals like University of Vermont psychologist Esther Rothblum， reacted enthusiastically：”This research indicate that people really are born with the tendency to have a certain weight just as they are to have a particular skin color or height”.Actually， behavioral geneticists believe that less than half of total weight variation is programmed in the genes， while height is almost entirely genetic determined. Whatever role genes play，Americans are getting fatter. A survey by the Center for Disease Control found obesity has increased greatly over the last ten years. Such rapid change underlines the role of environmental factors like the abundance of rich foods in Americans' overeating. The Center for Disease Control has also found that teens are far less physically active than they were even a decade ago. Accepting that weight is predetermined can relieve guilt for overweight people. But people’s belief that they cannot control their weight can itself contribute to obesity.Q12： What does the speaker say has aroused public interest?Q13： What do we learn about the changed gene?Q14： What does the University of Vermont psychologist Esther Rothblum say? Q15： What accounts for Americans' obesity according to a survey by the Center of Disease Control?听力真题原文：友谊Recording 1Qualities of a relationship such as openness， compassion and mental stimulation are of concern to most of us regardless of sex， but - judging from the questionnaire response， they are more important to women than to men. Asked to consider the ingredients of close friendship， women rated these qualities above all others. Men assigned a lower priority to them in favor of similarity in interests， selected by seventy-seven percent of men， and responsiveness in a crisis， chosen by sixty-one percent of male respondents. Mental stimulation， ranked third in popularity by men as well as women， was the only area of over-lap. Among men， only twenty-eight percent named openness as an important quality; caring was picked by just twenty -three percent.It is evident by their selections that when women speak of close friendships， they are referring to emotional factors， while men emphasize the pleasure they find in a friend's company. That is，when a man speaks of 'a friend'， he is likely to be taking about someone he does things with - a teammate，a fellow hobbyist， a drinking buddy. These activities are the fabric of the friendship; it is a 'doing' relationship in which similarity in interests is the key bond. This factor was a consideration of less than eleven percent of women. Women opt for a warm， emotional atmosphere where communication flows freely; activity is mere background.Lastly， men， as we have seen， have serious questions about each other's loyalty. Perhaps this is why they placed such strong emphasis on responsiveness in a crisis - 'someone I can call on for help.' Women， as their testimonies indicate， are generally more secure with each other and consequently are more likely to treat this issue lightly. In follow-up interviews this was confirmed numerous times as woman after woman indicated that 'being there when needed was taken for granted.'As for the hazards of friendship， more than a few relationships have been shattered because of cutthroat competition and feelings of betrayal. This applies to both men and women， but unequally. In comparison， nearly twice as many men complained about these issues as women. Further， while competition and betrayal are the main thorns to female relationship， men are plagued in almost equalamounts by two additional issues： lack of friendship and a fear of appearing unmanly. Obviously，for a man， a good friend is hard to find.Question 16： What quality do men value most concerning friendship according to a questionnaire response?Question 17： What do women refer to when speaking of close friendships?Question 18： What may threaten a friendship for both men and women?听力真题原文：家庭关系Recording 3主题：家庭关系I would like particularly to talk about the need to develop a new style of aging in our new society.Young people in this country have been accused of not caring for their parents， the way they would have in the old country. And this is true， but it is also true that old people have been influenced by an American ideal of independence and autonomy. So， we live alone， perhaps on the verge of starvation， in time without friends， but we are independent. This standard American style has been forced on every ethnic group， although there are many groups for whom the ideal is not practical. It is a poor ideal and pursuing it does a great deal of harm.This ideal of independence also contains a tremendous amount of unselfishness. In talking to today's young mothers， I have asked them what kind of grandmothers they think they are going to be. I hear devoted， loving mother say that when they are through raising their children， they have no intention of becoming grandmothers. They were astonished to hear that in most of the world throughout most of its history， families have been three- or four-generation families， living under the same roof. We have over-emphasized the small family unit - father， mother， small children. We think it is wonderful if Grandma and Grandpa， if they're still alive， can live alone.We have reached the point where we think the only thing we can do for our children is to stay out of their way. And the only thing we can do for our daughter-in-law is to see as little of her as possible. Old people's nursing homes， even the best run， are filled with older people who believe the only thing they can do for their children is to look cheerful when they come to visit. So， in the end，older people have to devote all their energies to 'not being a burden.'Were beginning to see what a tremendous price we've paid for our emphasis on independence and autonomy. We've isolated old people and we've cut off the children from their grandparents. One of the reasons we have as bad a generation gap today as we do is that grandparents have stepped out. Young people are being deprived of the thing they need most - perspective， to know why their parents behave so peculiarly and why their grandparents say the things they do.Q22 What have young Americans been accused of?Q23 What does the speaker say about old people in the United States?Q24 What is astonishing to the young mothers interviewed by the speaker?O25 What does the speaker say older people tried their best to do?听力真题原文：幽默”Too many people view their jobs as a five-day prison from which they are paroled6every Friday ，”says Joel Goodman ， founder of The Humor Project ， a humor-consulting group in Saratoga Springs， New York. Humor unlocks the office prison because it lets adults bring some of their childlike spirit to the job.According to Howard Pallio， professor of psychology at the University of Tennessee，Knoxville ， an office with humor breaks is an office with satisfied and productiveemployees. Pollio conducted the study that proved humor can help workers excel at routine production tasks. Employees perform better when they have fun .In large corporations with a hierarchy of power， there is often no outlet for stress，“Every company needs underground ways of poking fun at the organization，”says Lynn N Mark ， the speaker on workplace humor for St . Mary's Health Center inSt. Louis . 7Kodak's Rochester New York branch discovered a way for its 20 000 employees to uncork their bottled-up resentments . Their 1 000 square foot ”Humor Room”features a “toy store”. ”Among the room's many stress-reducing gadgets， the main attraction is a boss doll with detachable arms and legs. Employees can take the doll apart， as long as they put its arms and legs back in place.Sandy Cohen， owner of a graphic print-production business， created ”The QuoteBoard” to document the bizarre phrases people say when under strictdeadlines. ”When you’re under stress， you say stupid things，”says Cohen，“now we just look at each other and say that’s one for the Quote Board!”9. What does the passage say about humor in the workplace?10. What does the study by Howard Pollio show?11. What can Kodak's employees do in the Humor Room?六级听力长对话真题：体育Conversation 1M： Tonight， we have a very special guest. Mrs. Anna Sanchez is a three-time Olympic champion and author of the new book To the Edge. Mrs. Sanchez， thank you for joining us.W： Thank you for having me.M： Let's start with your book. What does the title ”To the Edge” mean? What are you referring to?W： The book is about how science and technology has helped push humans to the edge of their physical abilities. I argue that in the past 20 years， we have had the best athletes the world has ever seen.M： But is this a fair comparison? How do you know how， say， a football player from 50 years ago would compare to one today?W： Well. You are right. That comparison would be perhaps impossible to make. But the point is more about our knowledge today of human biochemistry， nutrition and mechanics. I believe that while our bodies have not changed in thousands of years， what has changed is the scientific knowledge. This has allowed athletes to push the limits of what was previously thought possible.M： That's interesting. Please tell us more about these perceived limits.W： The world is seeing sports records being broken that could only be broken with the aid of technology. Whether this be the speed of a tennis serve or the fastest time in a hundred-meter dash or a two-hundred-meter swimming race.M： Is there any concern that technology is giving some athletes an unfair advantage over others?W： That is an interesting question and one that has to be considered very carefully. Skis， for example， went from being made of wood to a metal alloy， which allows for better control and faster speed. There is no stopping technological progress but， as I said， each situation should be considered carefully on a case-by-case basis.Questions 1-4 are based on the conversation you have just heard.Question 1： What do we learn about Anna Sanchez?Question 2： What is the woman's book mainly about?Question 3： What has changed in the past thousands ofyears?Question 4： What is the man's concern about the use of technology in sports competitions?六级听力长对话真题原文：国际贸易Conversation 2W： l've worked in international trade all my life. My father did so too before me. So， I guess you could say it rounds in the family.M： What products have you worked with?W： All sorts， really. l've imported textiles， machinery， toys， solar panels， all kinds of things over the years. Trends and mind come and go， so one needs to be very flexible to succeed in this industry.73M： I see. What goods are you trading now?W： I now import furniture from China into Italy. And foods from Italy into China. I even use the same container. It's a very efficient way of conducting trade.M： The same container? You mean you own a 40-foot cargo container?W： Yeah， that's right. I have a warehouse in Genova， Italy and another in Shanghai. I source mid-century modern furniture from different factories in China. It's very good value for money. I collect it all in my warehouse and then dispatch it to my other warehouse in Italy. Over there I do the same， but with Italian foods instead of furniture. Things like pasta， cheese， wine， chocolates，and I send all that to my warehouse in China in the same free container I use for the fumiture.M： So， I presume you sell both lines of products wholesale in each respective country. W： Of course， I possess a network of clients and partners in both countries. That's the main benefit of having done this for so long. l've made great business contacts over time.M： How many times do you ship?W： I did 12 shipments last year， 18 this year， and I hope it'll grow to around 25 next year. That's both ways， there and back again. Demand for authentic Italian food in China is growing rapidly，and similarly， sales of affordable yet stylish wooden furniture are also increasing in Italy. Furniture is marginally more profitable， mostly because it enjoys lower customs duties.Questions 5-8 are based on the conversation you have just heard.Questions 5： What does the woman think is required to be successful in international trade?Question 6： What does the woman say is special about her way of doing trade?Question 7： What does the woman have in both Italy and China?Question 8： What does the woman say makes furniture marginally more profitable?英语六级听力答案：友谊听力答案：长对话2(国际贸易)英语六级听力答案：长对话1(体育)听力篇章答案：幽默英语六级听力答案：恐龙遗址听力篇章答案：基因遗传六级听力答案：家庭关系翻译真题：三国演义《三国演义》写于14世纪，是中国著名的历史小说。
英语六级考试CET-6真题+参考答案（3套）
英语六级考试CET-6真题+参考答案（3套）2013年12⽉⼤学英语六级考试真题(第1套）Part IDWriting(30 minutes)(请⼲正式开考后半⼩时内完成该部分，之后将迸⾏听⼒考试）Directions:For this part, you are allowed 30 minutes to write an essay on happiness by referring to the saying “Happiness is not the absence of problems, but the ability to deal with them.，，You can cite examples to illustrate your point and then explain how you can develop your ability to deal with problems and be happy. You should write at least 150 words but no more than 200 words.Part II Listening Comprehension (30 minutes)Section ADirections:/n this section, you will hear 8 short conversations and 2 long conversations. At theend of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Ans^wer Sheet 1 with a single line through the centre.注意:此部分试题请在答题卡1上作答。
《储能技术》 第6章习题答案[5页]
![《储能技术》 第6章习题答案[5页]](https://img.taocdn.com/s3/m/521b83e0951ea76e58fafab069dc5022aaea46ab.png)
第6章习题答案6-1 根据物理原理的不同，储热技术可以分为哪几类？答：根据物理原理的不同，储热技术可分为显热储热、潜热储热和热化学储热三种。
6-2 与显热储热技术相比，潜热储热技术最大的优势是什么？答：相较于显热储热，潜热储热的主要优势有两点，一是储热密度高于显热储热，二是可提供恒温的热能。
6-3 当液体显热储热材料静置于储罐中时，会出现温度分层现象，试简要说明温度分层产生的原因及其用于储热系统时的优点。
答：以水为例，在实际工程中，当水静置于水箱中时，由于散热会使得密度大的冷流体在重力作用下居于水箱底层，而密度小的高温流体居于水箱上层。
从提高系统性能的角度，水箱内的温度分层有两个优点：一是避免了冷热流体的掺混，当负载工质从水箱上层吸收热能时提高了热能利用的品位；二是由于集热器进口温度和效率呈负相关，所以集热器进口与水箱下层低温处相连可提高整个系统效率。
6-4 晶体生长率低、过冷度大会使得储存于相变材料的潜热难以充分利用，简要说明其原理。
答：过冷是指液体低于熔点而没有凝固的现象。
由于匀相核化结晶活化能的存在，纯液体的结晶一般会在略低于熔点时开始。
晶核形成的同时，新相和液体之间的相界面也会形成，此过程会消耗能量，所消耗能量的大小依其表面能而定。
假如要形成的晶核太小，形成晶核产生的能量无法形成界面，就不会开始成核。
因此必须要温度够低，可以产生稳定的晶核，相变材料才会开始凝固。
因此，晶体生长率低、过冷度大，会导致相变材料无法在理论的凝固点附近凝固，不仅造成潜热难以充分利用，且导致放热过程难以保持在恒温工况，因此对于某些过冷度大的相变材料，如、水合盐，可使用成核剂使其过冷点接近于熔点。
6-5 在相变材料的封装过程中，要求气隙空间产生于远离热源的位置，试分析其原因。
答：相变前后显著的密度差异将导致材料在固相时会形成一个气隙空间，如果封装技术设计不当，这个气隙空间将会大大阻碍传热速率，由于空气的导热率比任何相变材料都要低几个数量级，因此当气隙空间产生于不合适的位置时，将成为相变材料吸热熔化时巨大的热阻。
大学英语Unit-6课后练习答案-(1)
3) actress
4) trainees
5) Vietnamese
6) refugees
Grammar in Context: page 190
1
1) Judging from her accent, she is either Russian or Polish.
2) Either he could not come here or he did not want to.
If you substitute material things for love or a hug, you will not get happiness, because spiritual happiness has little to do with material wealth.
5. 得知自己得了绝症后，他告知孩子们除了他自 己住的这座房子以外他再无财产留给他们了。 (terminally; inform; other than)
Grammar in Context: page 191
2
4) Since the construction of the subways was completed, the population of the suburbs has grown twice as large as that of the city proper.
让PPT进行循环播放 1.单击”幻灯片放映”选项卡中的“设置幻灯片放映”，在弹出对话框中勾选“循 环放 映，按ESC键终止”。
23
如果你用物质东西代替爱和拥抱你将无法得到快乐因为精神上的快乐与物质财富并无多大关系
Key to Unit 6 Book 3
Enhance Your Language Awareness
2023英语六级答案6月
2023英语六级答案6月2023英语六级答案6月（完整版）2023年6月英语六级答案出炉！在英语六级成绩单上，是按照换算后的710分制给出的成绩，425分及以上算过。
今天我整理了2023英语六级答案6月（完整版）供大家参考，一起来看看吧!2023英语六级答案6月（完整版）第一套听力1.B ) It was warm and comfortable .2.B ) She misses her roommates she used to complain about .3.C ) He had a similar feeling to the woman s .4.A ) Go to see the woman s apartment .5.D ) He has published a book recently .6.C ) It has not prepared young people for the jobi ja market .7.A ) More of the budget should go to science and technology .8.D ) Cultivate better citizens .9. A ) It is quite common .10. B ) Engaging in regular contemplation .11. D ) Reflecting during ones relaxation .12. C ) There existed post offices .13. D ) It kept people in the deserts and plains connected .14. B ) It commissioned private wagons to carry the mail .15. C ) He examined its historical trends with data science .16. A ) Higher levels of anxiety may improve people s memory .17.C ) They measured the participants anxiety levels . SP18. B ) Extreme levels of anxiety can adversely affect cognitive performance .19. D ) They expect to get instantaneous responses to their inquiry .20. C ) Speaking directly to their emotions .21.B ) Keep up with the latest technological developments .22. D )- Friendships benefit work .23. A ) The impact of friends on people s self - esteem .24. D ) They increase people s job satisfaction .25. A ) Allow employees to have a flexible work schedule .2023英语六级答案6月（完整版）第二套听力1.A) She is drawn to its integration of design andengineering .2.D) Through hard work3.C) It is long - lasting .4.A) Computer science .5.B) He is well known to the public .6.D) Serve as a personal assistant .7.D) He has little previous work experience .8.C) He has a high proficiency in several languages .9.A) They have fewer rules and pressures .10.B) They rob kids of the chance to cultivate their courage .11.C) Let them participate in some less risky outdooractivities .12.B) Tech firms intentionally design products to have shortlifespans13.C) List a repairability score of their products .14.D) Take the initiative to reduce e lectronie waste .15.A) It can be solved .16.B) How to prevent employees from cyberloafing .17.C) Cyberloafing may relieve employees of stress .18.A) Taking mini - breaks means better job performance19.D) There were no trees .20.B) He founded a newspaper and used it to promote hisideas .21.C) One million trees were planted throughout Nebraska22.B) They moved out of Africa about 60,000 years ago .23.D) The discovery of two modern human teeth in China .24.A) There must have been some reason for humanmigration .25.D) What path modern humans took to migrate out of Africa2023英语六级答案6月（完整版）第三套听力：待更新2023六月英语六级答案——选词填空（第一套）Scientists recently examined studies on dog intelligence ..26.N surpass27.K previously28.O volumn29.M prove30.A affirmed31.G formidable32.D differentiate33.E distinct34.C completely35.I overstated2023六月英语六级答案——选词填空（第二套）Imagine sitting down to a big dinner ...26.H indulging27.I innumerable28.J morality29.A attributes30.K odds31.M regulatory32.G inclined33.N still34.E diminishing35.B comprised2023六月英语六级答案——选词填空（第三套）You might not know yourself as wellasyouthink ...26.L relatively27.I probes28.A activated29.k recall30.D consecutive31.C assessment32.G discrepancy33.E cues34.J random35.O terminate2023英语六级答案6月（完整版）信息匹配1 答案速查36-40 GDJHB41-45 ICLEN36.【G 】With only 26 students ...37.【D 】I’ve had the priviledge of38.【J 】The average tuition at a small ...39.【H 】Living in close community ..40.【B 】In higher education the trend ...41.【I 】Sterling Collegein Craftsbury Common ..42.【C 】Tiny Colleges focus not just on mi43.【L 】The trick to making tiny colleges ...44.【E 】Having just retired from teaching at a ...45.【N 】The ultimate justification for a tiny college…… 2023英语六级答案6月（完整版）信息匹配236-40 CGAIF41-45 KDMBH36【C 】Defoe s masterpiece , which is often .. 37【G 】There are multiple explanations ...38【A 】Gratitude may be more beneficiasm39【I 】Of course , act of kindness can also ...40【F 】Recent scientific studies support .41【K 】Reflecting on generosity and gratitude ...42【D 】When we focus on the things ....43【M 】When Defoe depicted Robinson ...44【B 】While this research into ...45【H 】Gratitude also tends to strengthens a sense 2023英语六级答案6月（完整版）信息匹配3答案速查36-40 EAFCH41-45 BIEKG36.【E 】Curran describes socilly prescibed .37.【A 】When psychologist Jessica Pryor ...38.【F 】Perfectionism can , of course , be ...39.【C 】What s more , perfectionism ...40.【H 】While educators and parents have ...41.【B 】Along with other therapists ...42.【I 】Bach , who sees many students ....43.【E 】Curan describes socially prescribed …44.【K 】Brustein likes to get his perfectionist clients to create ...45.【G 】Brustein says his perfectionist clients ...英语六级翻译答案6月2023年：城市发展近年来，中国城市加快发展，城市人居住环境得到显著改善。
unit6-大学英语综合教程答案
BOOK 1 - Unit 6 - Language Focus - Vocabulary1. Fill in the gaps with words or phrases given below. Change the form where necessary. 1) The former lake bed is now a [fertile ] plain producing good crops of wheat.2) Aunt Pat's rough, red hands [reflected ] a life of hard physical labor.3) If you are living [overseas], you may not have to pay tax in your own country.4) Helen is pretty, of [slim ] build, with blue eyes.5) We [split [split ] the boards down the middle to use them for the back of the shelves. 6) 6) Only Only the the hope hope hope that that that the the the rescuers rescuers were were getting getting getting nearer nearer [sustained ] ] the the the trapped trapped miners. 7) The [glow ] of the setting sun reddened the stream. 8) The kidnappers (绑架者) [thrust ] the boy into the car and drove off. 9) It is common knowledge that dogs have a [keen ] sense of smell. 10) The unusually cold winter caused many plants to [bud] late this year.11) Training is provided, so no [previous ] experience is required for the job.12) We can go to the seven o'clock performance or the eight — [w hichever]whichever] suits you best.2. Rewrite each sentence with the word or phrase in brackets, keeping the same meaning. The first part has been written for you.1) 1) I I strongly strongly dislike dislike the the sickly sickly smell smell of of of carpets carpets carpets and and and furniture furniture in in the the the bedroom. bedroom. (disgust)The sickly smell [of carpets and furniture in the bedroom disgusts me ].2) Correspondence between Mary and Henry came to an end after the death of her mother. (correspond)Mary stopped[c orresponding with Henry after the death of her mother].corresponding with Henry after the death of her mother].3) The most most suitable suitable site site for for a radio transmitter (发射台) is an isolated isolated place place far from cities. (best located)A radio transmitter[is best located at an isolated place far from cities ]. 4) The game on TV completely held my attention so that I didn't hear Martin come in. (absorb) I[was so absorbed in the game on TV that I didn't hear Martin come in ]. 5) Thanks t o the to the rough surface o f of the the basketball, basketball, players are able to to keep keep a firm hold of it. (grip) The rough surface of the basketball helps[players grip the ball ]. 3. Complete the following sentences, using the words or phrases in brackets. Make additions or changes where necessary.1) During the 1880s, several black colleges were founded in the U.S. [to broaden ] educational opportunities for black students and help them [make their way ] in the world. (broaden, make one's way)2) "The food at this hotel [disgusts ] me. Why not dine at the restaurant across the street?""Well, we we haven't haven't reserved reserved a a a table, table, table, but but but we'll we'll we'll [[take a chance on ] ] its its its not not being full." (take a chance, disgust)3) About 15,000 artists participated in [the grand ] opening ceremony of the Beijing Olympics, which left 91,000 spectators from China [and overseas ] mesmerized (着迷). The event, directed by Chinese filmmaker Zhang Yimou, [reflected ] China's rich history and cultural heritage. (overseas, reflect, grand) UsageFill in each gap in the following sentences with an appropriate word. In some cases, both words may be used.1. afraid frightened1) A fire broke out at the school but the teachers were able to lead the [frightened] children to safety.2) Don't be [afraid / frightened ] to complain if the service is bad.] to complain if the service is bad.2. alike similar1) Don't worry about which washing machine to buy, they are all [alike / similar ].2) The twins insist on wearing [similar ] clothes.3. alive living1) The old man was lucky to be [alive ] after such a devastating earthquake.2) He is widely regarded as Australia's greatest [living] poet.4. asleep sleeping1) She looked lovingly at the [sleeping ] child.2) I'm surprised to see you awake — ten minutes ago you were fast [asleep].- Word FamilySome words come from the same root, that is, they belong to the same family. If you get to know well each member of the family, they will all place themselves at your service.Study the following words. Then use them correctly in the sentences below.1. disappoint disappointment disappointed disappointing disappointingly (1) (1) If If you're expecting expecting that that that Dad Dad will let let you you you borrow borrow his his car, car, car, you're you're going to to be be greatly [d isappointed disappointed ].(2) She couldn't hide her [disappointment ] at not getting the job.(3) It's [disappointing] that so few attended the concert.(4) I'm sorry to [disappoint ] you, but I'm afraid I can't come after all.(5) Emma played rather [disappointingly ] in the piano competition and only came third.(6) What a [disappointing ] result! She should have done a lot better.2. attract attraction attractive unattractive attractively unattractively(1) The salary they're offering is very [attractive ], but I still don't want the job.(2) The local government is trying to [attract ] high-tech companies to the area.(3) My wife is keen on shopping, but it holds no [attraction ] for me.(4) (4) Karen Karen used used to to to wear wear wear severe severe severe clothing. clothing. clothing. Surprisingly Surprisingly e nough, enough, enough, I I found found her her her very very [attractively] dressed when I dropped in yesterday.(5) She's got a lovely slim figure, but her face is [unattractively] long.(6) Wearing an [unattractive] blouse and old-fashioned skirt, Dorothy looked older than she was.1. Complete the following passage with words chosen from the Words and Phrases to Drill box. Change the form where necessary.I had no difficulty in [identifying ] (1) him, standing there with the book [gripped ] (2) firmly in one hand. A book had seemed the the natural natural choice, as it had been been those those notes in the [margins ] (3) of another that had brought us together in the first place. He was right on time, just as we had scheduled. I liked that. It seemed to fit well with everything I had discovered from [corresponding ] (4) with him while he was [overseas ] ] (5). (5). (5). Now Now Now here here here he he he was was was in in in the the the flesh, flesh, flesh, looking looking [more than a littl e] e] (6) (6) handsome as he stood there in his uniform. I almost [hesitated ] (7) to put him to the test, but it was too late to change my mind and I was [grateful ] (8) to the lady for for agreeing agreeing agreeing to to to help. help. help. I I [made my way ](9) ](9) past past past him him him and and and didn't didn't wait wait to to to see see see his his response to her. So here I am in the restaurant, waiting to see whether I am going to have dinner on my own or not. Will he end up [going my way ] (10) after all? 2. Read the following passage carefully until you have got its main idea, and then select one appropriate word for each gap from the box following the passage.Jenny and Raymond had been been lovers lovers before before World World War II set set them them them apart. apart. Eight years years later later later Raymond Raymond happened happened to to learn learn that that that Jenny Jenny Jenny was was was still still still living living living alone alone in London ...)So Raymond found himself unpacking his bag in a London hotel before he had decided decided on on on his his his approach approach approach ((接近的途径) ) to to to Jenny. Jenny. Jenny. He He He [[first ] ] (1) (1) (1) thought thought thought of of of the the telephone, telephone, but but he he knew knew that that wouldn't wouldn't do. do. Jenny Jenny believed believed that that that he he he was was was dead. dead. dead. He He couldn't couldn't just just just [[ring ] ] (2) (2) (2) up up up and and and say say say he he he wasn't. wasn't. wasn't. [[Nor ] ] (3) (3) (3) could could could he he he just just just ring ring her doorbell and be standing there on the mat. She would think she was seeing things (眼花了).A hot bath and a change of clothes did not bring any revelations (启示), either. He sat down at the writing desk and began a letter to her — tore it up and began [another ] (4) — and tore that up. He [threw ] (5) down the pen and went out into the early October dusk of London, — [d eliberately deliberately ] (6) avoiding the address where Jenny was living. He was was unaccustomed unaccustomed to to dilemmas dilemmas (两难境界) like this which could not not be be [reasoned ] ] (7) (7) (7) out out out in in in a a a decent decent decent length length length of of of time, time, time, and and and he he he was was was getting getting getting angry angry with [himself ] (8). Moodily he turned into a cheerful-looking [restaurant ] (9) and had a lonely meal, aware that he might have Jenny's happy face across the table — he was wasting time — but after so many years, did a few more hours [matter ] (10)? Translation 3. Translate the following sentences into English, using the words or phrases in brackets.1) 我上大学之前，祖父对我说的那几句充满智慧的话给我留下深刻印象。
2020春-国开-西方经济学-形考任务3-、6-测验-参考答案
形考任务3、形考任务6 答案选项与试题选项顺序可能不一致，要看准具体答案！A．失业率和实际国民生产总值之间高度负相关的关系A．递减B 边际收益递减规律只是在下列情况下起作用C．生产函数中至少有一种投入要素的投入量是不变<B 边际技术替代率是指D．在保持原有产出不变的条件下用一种要素投入替代另一种要素投入的比率B 边际成本曲线与平均成本曲线的相交点是B．平均成本曲线的最低点B 边际成本与平均成本的关系是C．边际成本大于平均成本，平均成本上升B 边际储蓄倾向等于C．1-边际消费倾向B 边际消费倾向与边际储蓄倾向之和B．等于1B 编制国际收支平衡表的原则是D．复式记帐原理B 不随着产量变动而变动的成本称为B．固定成本B 不会增加预算赤字的因素是（D．间接税增加）每增加一单位生产要素投入所增加的生产力，是D．边际生产力C 厂商使用生产要素最优数量的原则是A．VMP=WC 长期总供给曲线表示B．经济中的资源已得到了充分利用C 长期菲利普斯曲线D．垂直于横轴C 成本推动通货膨胀A．通常用于描述某种供给因素所引起的价格波动C 产量为4时，总收益为100；当产量为5时，总收益为120，此时边际收益为A． 20C 财政政策挤出效应存在的最重要原因就是政府支出增加引起A．利率上升-C 赤字增加的时期是A．经济衰退时期C 称为狭义货币的是C 从纯经济的观点来看，最好的关税税率为D．零需求弹性大的产品是A．工业品供给曲线表明C．总供给与价格水平同方向变动D 等产量曲线是指在这条曲线上的各点代表B．投入要素的各种组合所能生产的产量都是相等的D 根据边际收益递减规律，如果技术不变，其他投入要素的投入量不变，一种投入要素如果过量使用，A．最终会使总产量下降D 等成本曲线平行向外移动表明B．成本增加了D 对化妆品的需求减少是指A．收入减少引起的减少D 对于一个不吃猪肉的人来说，猪肉的需求量和牛肉价格之间的交叉弹性是A．0D 对于一种可变生产要素的生产函数而言，当总产量达到最大值而开始递减时，边际产量处于A．递减且边际产量小于零D 当汽油的价格上升时，在其他条件不变的情况下，对小汽车的需求量将A．减少D 当咖啡价格急剧升高时，在其他条件不变的情况下，对茶叶的需求量将C．增加；D 当供求原理发生作用时，粮食减产在市场上的作用是B．粮食价格上升D 当某种商品的需求和供给出现同时减少的情况时，那么C．均衡价格无法确定，均衡产量减少D 当X商品的价格下降时，替代效应增加，收入效应下降，但总效应是增加的，则商品是A．低档商品D 当X商品的价格下降时，替代效应增加，收入效应也增加，则商品是B．低档商品D 当平均产量达到最大值时B．总产量仍处于上升阶段，还未达到最大值D 当边际产量达到最大时，下列各项中正确的是C．平均产量处于递增阶段D 当劳动的总产量达到最大值时C．边际产量为零D 当边际产量大于平均产量时，A．平均产量增加&D 当劳动的边际产量为负时，生产处于C．劳动投入的第III阶段D 当边际成本曲线达到最低点时A．平均成本曲线呈现递减状态D 当边际成本曲线上升时，其对应的平均可变成本曲线一定是D．既可能上升，也可能下降D 当价格大于平均成本时，此时存在B．超额利润D 当长期均衡时，完全竞争厂商总是B．经济利润为零D 当一个行业由竞争演变成垄断行业时，那么B．垄断市场的价格大于竞争市场的价格D 当人们无偿地享有了额外收益时，称作D．外部经济D 当经济中存在通货膨胀时，应该采取的财政政策工具是C．减少政府支出和增加税收￥D 当国际收支赤字时，一般来说要使用调整策略C．增加出口D 当经济中存在失业时，应该采取的财政政策工具是A．增加政府支出D 导致总需求曲线向右上方移动的因素是A．政府支出的增加D 导致总需求曲线向左下方移动的因素是B．政府支出的减少D 导致短期总供给曲线向右下方移动的因素是C．社会投资增加D 导致短期总供给曲线向左上方移动的因素是A．投入生产要素的价格普遍上升曲线发生位移的原因是C．因影响需求量的非价格因素发生变动，而引起需求关系发生了变动F 菲利普斯曲线是一条Ｄ．失业与通货膨胀之间交替关系的曲线F 菲利普斯曲线的基本含义是C．失业率上升，通货膨胀率下降投入量和产出水平之间的关系称作B．生产函数均衡价格的正确说法是C．供给曲线与需求曲线交点上的价格G 固定成本是指A．厂商在短期内必须支付的不能调整的生产要素的费用G 公式I+G+X ＞ S+T+M说明D．总需求大于总供给G 公共产品的产权是属于社会，而不属于任何个人是指它的B．非排他性:G 公开市场业务是指C.中央银行买卖政府债券的活动G 寡头垄断市场和完全垄断市场的主要区别是A．企业数目不同G 寡头垄断的一个显著特征是A．企业之间互相依存G 供给曲线是一条倾斜的曲线，其倾斜的方向为B．右上方G 供给规律中可以反映在D．某商品价格上升将导致对该商品的供给量增加G 供给的变动引起B．均衡价格反方向变动，均衡数量同方向变动G 根据基尼系数的大小，比较下列三个国家中哪一个国家的分配最为平均A．甲国的基尼系数为G 根据储蓄函数，引起储蓄增加的因素是A．收入增加Ｄ．存在着隐蔽的通货膨胀.J 经济学主要是研究（）。
2023年6月英语六级真题及参考答案
2023年6月英语六级真题及参考答案六级试卷采用多题多卷形式，大家核对答案时，找准具体选项内容，忽略套数！网络综合版：听力第一套Conversation OneM: Hi Lily, how's the new apartment?W: It's okay.M:What? How can it be just okaywhen last week you were thrilledabout the place and keptnosting photos of it online?W:Well,【1】last week whenfmoved in, the apartment seemed cozy, justthe right size forone person. But nowit just seems tiny, shabby and solitary.M: Al that's the problem. You missyour roommates from university,don't you?W: I'm going to sound like G idiot【2】because Iused to complain to youall the time about how crowded ourdormitory room was, and about allthe things they did to irritate me, likewatching movies late at night withoutheadphones, or talking loudly early inthe morning. But now Imiss themterribly.M: Of course you do. That's perfectlynormal. When I got my first place,Iremember thinking I could ti wait tolive by myself and get away from myjuvenile roommates and all their annoyipghabits.【3】But then began issing them and feelinglonely and thinking that our dormitory was like paradise. Even though there were six of us guys inone small room.W: I thought it was just m who reltlike thiat.M: Look, you lived at home with us.And then you had three roommates.And this is your first time living alone.So i hard But your first apartmentis a milestone in your life. And youshould celebrate it. Tell me about theapartment.W: Actuaily, it's not bad. In fact, it'spretty adorable. Now that I have decorated it and it has et rjthing Ineed. I have a kitchen to cook in thebathroom al! to myself.And then anothes room with my bed at one endand the sofa, a small table and chairsat the C herend.M: That does sound adorable, and【4】Ican't wait to see it. And neither canmom and dad.Question 1: What was the woman'sfirst impression of the apartment?Question 2: Why does the womansay she's going to sound like an idiot?Question 3: What do we learn about the man when he left thedormitory to live on his own?Question 4: What is the man say hecan't wait to do.W: Welcome to our program book talk. Q5.ourgyest today is FrankJonesiditicbf our education system and the author of new book,How to reform our universitres.M: Hello, Susan.W: Frank, you support radicallychanging universities in America. Yes.Q6.I believe that the purpose of highereduad grefo prepare young peopleto enter the workforce and that ourcurrent system fails to do this, We'reallocating too many resou disciplines that don't match the needsof employers.W: I think your attitude to education isa bit cynical Frank. Surely the purpose of university is to prepareyoung people to participate fully incivic life rather than just to find wellpaid jobs.M: Susan, many young graduates struggle to find any job let alone agood one. The job markcisgrim.Particulaniior students who studythe arts. I agree that it isn't easy foryoungr gegple to find work, but youpropose closing down alt departments that aren't directlyrelated to science and technology. Isthat really the solution?M: You're overstating my paint. Q7.My argument is that we need it use moer of our budget on areas like science and engineering. To do that, we needto take money from subjects likeliterature and musicW: Q8,But the arts have value. They'rean important part of our culture.studying literature or music or sculpture might not result in a job inthatae But it helps young people tothink about the world in a.deeperway, which makes them b citizens and makes fora better society.M:l agree that the arts are valuable tosociety, but it's naive to think that notonly tk miost talented, but allstudents should study them at university level. The odds are verycompetitive, and most graduates willend up with a great deal of debt,obtaining a degree that has littlevalue on the job market.Question 5. What do we learn from theconversation about the man?Question 6. What does the manbelieve is the problem with the current American System of Higher Education?Question 7. How should the educationbudget be allocated according to theman?Question 8. What does the woman saythe arts can do?Passage OneDo you ever have the annoying feetingthat you don't have time to really thinkanymore? You're not alone.【Q9】A variet dtdrs have conspired to robus of time for reflectionourselves and our lives.preoccupied minds are rarely Silent.The average person receives hundredsof texts and voice messages a day. Andholidays for many of us are action-packed weeks more likely full of familyactivities than opportunities fortranquility and contemplation.【Q10】Regular reflection,howe,underlies all great professionals. It's a prerequisite for you to recharge yourmental batteries. See things in a newlight and tap into your creativity.Almost all of the great advisors that Ihave studied have found ways to getaway from it all and contemplate theirlife and work. Some researchers in thefield of creativity, in fact, believe thatinsight occurs during the reflection and relaxation that follows aCeriod of intense actvity.Schedule your time for reflection aboutyourwork ora particular proiect you're engaged in. I usually biock outhalf an hour. Don't answer the phone.Push your papers to the side. Sketch,make lists, draw mind maps of ideasthat come to you. At the end, write down any emerging ideas.When you're alone, stop worrying andthink. A lot of our downtime is spentworrying about troublesc ne thihgs inour lives or fantasizing aboat how we'dlike our lives to be.【Q11】Revisitthings during moments of relaxationafter a periodnof intense work. This iswhenwe are the most creative.Question 9 What do we learn about thefeeling that one doesn't heeitime tothink anymore?Questica 10 What trait do all greatprofessionals share?Question 11 What is some researchersbelieve is conducive to creative ideas?Passage Twohad post offices The first opened in 1859 in asettlement founded by migrants searching for gold,Life could be unpredictable outwest. Gold failed to appear. Drought ruinedfarmers, and settlers clashed with_NativeAmericans.On the settlement's location now stands asprawling University campus. Amid all thechanges, one feature remained constant: thepostal service. The maps tracing America'swestward expansion are telling in 1864 therewere few postat branches on land controlledby Native Americans, which still accountedfor most of the West. Over the next 25 years,post offices grew quickly. Colonization'of theWest could be regarded as a result of biggovernment rather than pioneers.【13】Asfederal subsidies and land grants temptedpeople into the deserts and plains, the postkept them connected.In the mid-19th century, the Post OfficeDepartment was far from a centralizedbureaucracy. To keep up with migrationpatterns, postal services were added toexisting businesses.【14】The federal government commissioned private wagons themail. Short term contracts were granted tolocal businessman to act as postmasters.These partnerships enabled the mail to quickly followmigrants helping knit togetherremote parts of the country.Mr. Bellavance, a digital historian, wrote abook on the history of the US postal service.【15】He used the data science to analyzehistorical trends, Most strikingly he built anaccompanying website, complekw;Tinteractive maps.They show readers-howwithin a generation the postal service helpedcolonize a continent. These online interactivemaps illustrate the formative power of snailmail.Q12 What does the passage say AboutColorado before it became a state?Q13 How did the postal service contribute toAmerica's westward expansion?Q14 What did the federal government:do tomeet the increasing demand for the postalservice in the West?Q15 What did Mr. Bellavance do to study thehistory of the US postal service?听力演讲1In last week's lecture, we discussed reasons whypeople forget things. This week we will discuss asurprising reason why we might remember somethings, anxiety. Think about something as simple asbuying a coffee. That may not seem like an experience that would make a deep impression onyour memory. But anxiety could change that. Q16.In fact, a new study suggests that people withhigher anxiety levels might remembertertain information better than people with lower anxietylevels.That's because higher levels of anxiety may makepeople moresusceptible to negative feelings,putting them in a more negative state of mind. Thatin turn, may make them able to better remembersome events. Let's take a closer look at that newstudy now. Q17. In this study, tseardhersstarted by giving 80 undergraduate students ananxiety test. The test measure the participantsanxiety levels over the proceeding two weeks.Then, to test memory, the participants were showna series of neutral words one at a time. Some of thewords were printed onto photos of negative scenes,meaning images that could affect their emotionsnegatively, such as a photo of a car accident, or acemetery. The rest of the words were printed ontophotos of neutral scenes, such as a photo of a lakeor trees. Neutral words included words like table ordesk that don't elicit emotion.Later, the participants were asked to think back tothe words they were shown earlier, which causedthem to reenter either a negative or neutral mindset. The participants were then presented withanother set of neutral words, and their memory ofthese new words was tested.The researchers found that the new words presented to people in a negative mindset werebetter remembered by people with higher levels ofanxiety than those with lower levels of anxiety.In other words, when highly anxious individualstook in otherwise emotionally neutral informationthat was presented to them, it became colored bytheir negative mindset, making them remember theinformation better. But these same effects were notseen in people with low levels of anxiety.Q18. Previous studies havefound that extremeevels of anxiety such as those experienced bypeople diagnosed with an anxiety disorder can bequite detrimentalto memory and cognitive performan But the highly anxious people in thisstudy represent individuals who are managing theiranxiety and for whom anxiety is not. a seriousproblem.Question 16. What does the speaker say the newstudy suggests?Question 17. What did researchers do first in thenew study?Question 18. What do we learn from previousstudies aboutlanxiety?Over the past 20 years, the u ternet hasgradually become a dominant featureof our lives. It has changed how wecommunicate with each other. And ithas definitely transformed the way wedo business with each other:Marketinghas also changed in a number of ways.For instance, in the past, consumershad to call a phone number and patiently wait on hold in order to getthe information they wanted.[Q19]Today, they want the informationimmediately. They'll go to the company's sociaLmediapdc nifostcomments and questions expecting toreceive an immediate response. Iftheydon't get their questions answeredsoon they'll move on to anothercompany that will answer themquickly.Marketing departments today need tofollow technological development. Forexample, this year smartphone issmarter than last years. s fariving cars are now on the road. Marketershave to do research on which techncingies:are coming into bsing,otherwise, they risk being leit behindin the virtual dust.Marketing has also changed due to theimportance of video. People don't justwant to read text. They walt to watchthings happening. Companies now have to explore how they can use videoon a consistent basis to share information about their sinesses.Fortunately, it's extremely easy to shoot something these days. All youneed is a smartphone.But what's the result of all this? Shorteraitention spans? We aren't the samepeople that we were 20 yedi ago. Notonly have we grown accustomed togetting the information we want instantaneously, our attention spansare much shorter. If something doesn'tcaptulc ourattention within a fewseconds. We're on to the next piece ofcontent.[Q20]Marketers need to figureout ways to speak directly to the customer's emotions and they need tofigure out how to do that as quickly aspossible. Once people are emotionallyengaged, they'll stick with you.If marketingi has changed this much inthe past 20 years, imagine what thenext 20 years will bring li ai recentsurvey, only 9% of marketers could saywith confidence that their marketingefforts were actually working. Theirconfidence is being shaken becausethe rules of the game change everyyear. That's why [Q21]it'simportant for marketers to pay attention to the latest technological devel and consider collaborating with technological innovators. That way,they'll be moving at thesame pace asthe tech industry.Question 19 What does the speaker sayabout today's consumers?Question 20 How do marketers captureconsumers'attention as quickly aspossible?Question 21 What does the speakersuggest marketers do to meet futurechalletes?演讲3You might be surprised to learn that [Q22] thebenefits offriendships extend beyond people's sociallifeand into their work, which is interestingwhen cd lili the extent to which peoplesacrifice friendships, or at least the time they spendwith friends because of the exte edihairsthey'redevoting to work. Just last week, rwas remarking toa colleague that I'm content with only one socialengagement per week. But according to recentresearch, that's evidently not enough.In an initial study of more than 700 respondents,scholars from an American university [Q23] analyzethe imrf thst:fiends as opposed to family haveon sel dem Jahd well-being. Friends came outsubstantially on top. That's because to be someone's mate is a voluntary act. Unlike familywho people rarely get to choose. The researchersfound that when people choose to cultivate andmaintain supportive friendships with an individual,it means that the person is valued and worthy oftheir limited time. Such sentiments of value andworthiness boost our self-esteem.The second study comprised more than 300 participants. It proved that the better we feel aboutourselves, the more likely we will perform our jobconfidently and competently. This follow-up studyfound that [Q24] non-work friends even improvedpeople's job satisfaction. They have as much of animpact on how much they love their jobs, as do thefriends they have at work, despite not actuallybeing at our place of work. These types of friendstend to be our preferred outlet fo nni aboutwork-related mattersyThis is an avenue that maynot be available at the office.So even though friendships can be easy to neglectwhen confronted-by pressures at work, or evenpressures at home, neglecting our friends can turnout to be harmful and counterproductive. That'swhy when determining how to create a better work-life balance, we need to consider not only how tobalance work and family demands, but also how tocultivate and sustain supportive friendships. It's for employees for flexible work arrangements. It'sirrelevant whether their need for a desired scheduleis due to say, parenting responsibilities, or a craving to hang out with their best mate. Whatmatters is the opportunity to engage in a nourishingactiyity outside of work. That will definitely have afollow-on effect at work.Q 22 What does the speaker say is interesting?Q 23 What did researchers from an Americanuniversity analyze in their initial study?Q 24 What did the second study find aboutmon-work friends?Q 25 What does the speaker suggest managers do?参考答案：1.A) She is drawn to its integration of design andengineering.2.D) Through hard work.3.C) It is long-lasting.4.A) Computer science.5.B) He is well known to the public.6.D) Serve as a personatassistant.7.D) He has little previous work experience.8.C) He has a high proficiency in several languages.9.A) They have fewer rules and pressures.10.D) They deprive kids of the opportunity todevelop team spirit.11.C) Let them participate in some less risky outdooractivities.12.B) Tech firms intentionally design products tohave short lifespans.13.C) List a repairability score of their product.14.D) Take the initintive to reduce electronic waste.15.A) It can be solved.16.B) How to prevent employees from cyberloafing.17.C) Cyberloafing may relieve employees of stress.18.A) Taking mini-breaks means better jobperfontance.19.D) There were no trees.20.B) He founded a newspaper and used it topromote his ideas.21.B) The state government declared it the officialArbor Day.22.B)They moved ou of Africa about 60,000 yearsago.23.D) The discovery of two modern human teeth inChina.24.A) There must have been some reason for humanmigration.25.D) What path modern humans took to migrateout of America.听力第二套参考答案：作文：心理健康Mental well-being is regarded as a state of health where a person is able to address normal stresses in daily life. Recently,this state has been grasped as much attention as physical health.Obviously, there are several factors that affect people's mental well-being. Firstly, a strong contributor to mental well-being refers to the state of a person's usual environ-ment. Adverse environmental circumstances can lea negative effects on psychological wellness. Livingin a positive social environment, in contrast, can provide protection against mental challenges. Secondly, people's lifestyle can also impact their mental health. Smoking, a poor diet, alcohol con-sumption, substance use, and risky sexual behavior may result in psychological harm. Smoking, a poor diet, alcohol consump-tion, substance use, and risky sexual behavior may result in psychological harm. Worse, such behaviors have been linked to depression.In conclusion, because mental health is so important to general wellness, it's important that you take care of your mental health. Talking therapy, meditation and maintaining a positive outlook on life all contribute to people mental health. With a positive mental state, all areas of life will go towards active de-velopment.友好的讨论When faced with differing opinions, we should try to reach agreement through friendly discussion and reasonable argu-ment. In our daily life, it is common to see college students struggling with a polite and logical way when their views differ from others'. Apparently, this issue has sparked public con-cerns.Friendly discussion allows individuals to share their perspec-tives and opinions in a respectful manner. This can lead to a better understanding of each other's viewpoints and poten-tially even finding common ground. In addition, reasonable ar-gument allows individuals to present evidence and logic to sup-port their position, which can help persuade others to see their point of view. However, it is important to note that not all disagreements can be resolved through discussion and argu-ment alone. In some cases, compromise may be necessary to reach a resolution that satisfies all parties involved.To sum up, friendly discussion and reasonable argument, to a large extent, are of great use. We should be open-minded and engaged in such practices.教育的目标Education has played an increasingly crucial role in modern so-ciety. We aim education on different levels at cultivating the to-be successors of our global village. One important goal that education is trying to achieve is help students master the ways to acquire knowledge.Of all the capabilities one can develop to acquire knowledge in being educated, three sorts are of the greatest significance.First of all, students who are receiving education definitely know that they are always ignorant of some branches in th eocean of knowledge, which can keep them modest and more willing to explore their unfamiliar realms, even deeper if they've already done so. Moreover, students can imitate what their teachers or professors do in or our of class and then gradually acquire the ability to undertake more scientific re-search and intellectual inquiries alone. Last but not least,youngsters who are accustomed to being educated at school or college are more likely to keep studying as a life-long habit,which will have a substantially positive effect on their own life and the future of the human world.In my perspective, education is one of the most marvelous social inventions that ever existed in human history. Without it, the whole globe can never continue developing further in a civilized and prosperous direction.星火英语版：听力部分（共2套）第一套1.B) It was warm and comfortable.2.B) She misses her roommates she used to complain about.3.C) He had a similar feeling to the woman's.4.A) Go to see the woman's apartment.5.D) He has published a book recently.6.C) It has not prepared young people for the job market.7.A) More of the budget should go to science and technology.8.D) Cultivate better citizens.9. A) It is quite common.10. B) Engaging in regular contemplation.11. D) Reflecting during ones relaxation.12. C) There existed post offices.13. D) It kept people in the deserts and plains connected.14. B) It commissioned private wagons to carry the mail.15. C) He examined its historical trends with data science.16. A) Higher levels of anxiety may improve people's memory.17）C) They measured the participants' anxiety levels.18.B) Extreme levels of anxiety can adversely affect cognitive performance.19. D) They expect to get instantaneous responses to their inquiry.20. C) Speaking directly to their emotions.21. B) Keep up with the latest technological developments.22. D) Friendships benefit work.23. A) The impact of friends on people's self-esteem.24. D) They increase people's job satisfaction.25. A) Allow employees to have a flexible work schedule.第二套1. A) She is drawn to its integration of design and engineering.2.D) Through hard work.3.C) It is long-lasting.4.A) Computer science.5.B) He is well known to the public.6.D) Serve as a personal assistant.7.D) He has little previous work experience.8.C) He has a high proficiency in several languages.9.A) They have fewer rules and pressures.10.D) They deprive kids of the opportunity to develop team spirit.11 C) Let them participate in some less risky outdoor activities.12. B) Tech firms intentionally design products to have short lifespans.13. C) List a repairability score of their product.14. D) Take the initintive to reduce electronic waste.15. A) It can be solved.16.B) How to prevent employees from cyberloafing.17.C) Cyberloafing may relieve employees of stress.18. A) Taking mini-breaks means better job perfontance.19.D) There were no trees.20.B) He founded a newspaper and used it to promote his ideas.21.B) The state government declared it the official Arbor Day.22.B）They moved ou of Africa about 60,000 years ago.23.D) The discovery of two modern human teeth in China.24.A) There must have been some reason for human migration.25.D) What path modern humans took to migrate out of America.翻译部分（共3套）1.中国文化出口近年来，越来越多的中国文化产品走向全球市场，日益受到海外消费者的青睐。
学术英语Unit 6 课后练习答案
Unit 6 Consumer Behavior
• Text B
The Customers’ Revenge
– – – –
Critical thinking and reading Supplementary analysis Collocations Suggested answers
Unit 6 Consumer Behavior
Text A
Critical reading and thinking
Language Support
2. … this family was in the know and could afford expensive Western brands. (Line 3, Para.10)
Unit 6 Consumer Behavior
unit6-the green banana-课后练习答案
VII
• 8 By the time, • for some time • 9 at times/ all the
time • 10 For a long time/
During that time, • all the time
GRAMMAR
VII
• 1 At that time • 2 at a time • 3 for the time
being, • in time • 4 on time
• 5 during the time/ at the time,
• for a time/ for a long time
• 6 all the time
• 4. Guilin has always been regarded by our people as the most beautiful place in our country. I used to have my doubts, but now I totally agree with them. Everything is so beautiful, especially the rock formations in all those different shapes.
II
• 1. pass me today’s China Daily • 2. sing us a song • 3. offered their next door neighbor, the
Smiths, a lot of help • 4. gave it to an old beggar • 5. leave any message to me
2010-6-真题答案(审核知识和基础知识)
2010年6月QMS审核员笔试参考答案基础知识一、单项选择题1、SPC可用于（A）（A）评价过程变异（B）评价过程稳定性（C）评价过程变化趋势（D）以上全部2、以下关于“要求”错误的是（B）（A）要求包括明示的要求、通常隐含的要求、必须履行的要求；（B）必须履行的要求，是指在文件中阐明的要求（C）通常隐含的要求是指那些不言而喻的要求（D）要求可由顾客或其他相关方提出3、8个自然数按顺序排列在一起，从第3个数开始，每个数都是前面2数之和，第5个数是7，第8个数是几？（C）（A）11（B）18（C）29（D）474、管理评审的输出应包括与质量管理体系改进和产品的改进及资源需求有关的任何（C）（A）决定（B）措施（C）决定和措施（D）改进措施5、不是四书的是（C）（A）大学（B）论语（C）春秋（D）孟子『说明』四书：曾子的《大学》、子思的《中庸》、孔子及其弟子的《论语》、孟子及其弟子的《孟子》；五经：《诗》（《诗经》）、《书》（《书经》，即《尚书》）、《礼》（《礼记》和《周礼》）、《易》（《易经》，包含《周易》）、《春秋》（阐述《春秋》的史书有三部，称为“春秋三传”，即《春秋左氏传》简称《左氏春秋》或《左传》、《春秋公羊传》简称《公羊春秋》或《公羊》、《春秋谷梁传》简称《谷梁春秋》或《谷梁》）。
6、抽样检验按检验特性分为计量抽样，（C）抽样。
（A）计点（B）计件（C）计数（D）序贯7、2828.1-2003主要适用于（B）（A）孤立批检验（B）连续批检验（C）生产过程稳定性检验（D）产品检验非破坏性8、有大、小两种规格的盒子，大的可装11个圆球，小的可装8个，一共有89个圆球，如果要装满所有盒子，一共需要大、小盒子各多少个？（A）（A）3，7（B）4，6（C）5，4（D）6，39、对外包过程控制的程度取决于（D）（A）组织采用7.4要求的控制能力（B）对外包活动应承担的控制分工（C）外包过程对所提供给顾客的产品的影响（D）以上都是10、文件发布前批准是为了（A）（A）确保文件是充分与适宜的（B）使文件保持清晰易于识别（C）确保文件能够及时发放（D）以上全部11、组织需要控制的外来文件包括（D）。
英语六级答案2023年6月
英语六级答案2023年6月英语六级答案2023年6月2023年6月英语六级考试已经在17日下午结束啦，信任许多同学都想对下六级答案，估算下自己的成果。
今日我整理了英语六级答案2023年6月供大家参考，一起来看看吧!英语六级答案2023年6月——选词填空（第一套）Scientists recently examined studies on dog intelligence ..26.N surpass27.K previously28.O volumn29.M prove30.A affirmed31.G formidable32.D differentiate33.E distinct34.C completely35.I overstated英语六级答案2023年6月——选词填空（其次套）Imagine sitting down to a big dinner ...26.H indulging27.I innumerable28.J morality29.A attributes30.K odds31.M regulatory32.G inclined33.N still34.E diminishing35.B comprised英语六级答案2023年6月——选词填空（第三套）You might not know yourself as wellasyouthink ...26.L relatively27.I probes28.A activated29.k recall30.D consecutive31.C assessment32.G discrepancy33.E cues34.J random35.O terminate英语六级答案2023年6月——信息匹配（第一套）36. One tiny American college situated on a cattle farm is devoted to educating students to serve mankind throughout their lives .[ G ] With only 26 students ...37. Much to the author s disappointment , the three institutions of higher learning where she taught largely ignore students growth as Social beings .[ D ] I ve had the priviledge of ...38. Tiny colleges must be made affordable in order to playa role in higher education .[ J 】 The average tuition at a small ...39. According to a recent graduate from a tiny college , living together with faculty and fellow students is conducive to a student s growth as a person .[ H ] Living in close community ...40. Rather than going small , most American universities are trying to gobig .[ B ] Inhigher education the trend ...41. In a certain tiny college , rigorous academie work and traditional manual labor areintegrated .[ I ] Sterling College , in Craftsbury Common ...42. Tiny colleges focus on educating students to become well - rounded citizens instead of seeking their own expansion .【 C 】 Tiny Colleges focus not just on ...43. The essence of education lies in the interaction between people[ L ] The trick to making tiny colleges ...44. After her retirement , the author has decided to set up a tiny college in her hometown .[ E 】 Having just retired from teaching at a ...45. Tiny colleges are justified as it is believed that our growth into ful humanity comes through interaction with people near and dear to us .【 N ] The ultimate justification for a tiny college ...英语六级答案2023年6月——信息匹配（其次套）36. It does us far more good to focus on things we can be grateful for than what makesus sad and resentful .[ C ] Defoe s masterpiece , which is often ...37.The beneficial impacts of gratitude can extend from individuals to their community and to a the wider society .[ G ] There are multiple explanations ...38. The participants in a recent study repeatedly underestimated the positive effect on those who received thank - you notes .[ A ] Gratitude may be more beneficial39. Good deeds can sometimes make people feel uncomfortable .[ I ] Of course , act of kindness can also ...40. People who regularly express gratitude can benefit in moraliterms .[ F ] Recent scientific studies support ...41. A basketball coach advocated performing generous acts without expecting anything in return .[ K ] Reflecting on generosity and gratitude ...42. More and more evidence shows it makes us mentally and physically healthier to routinelycount our blessings .[ D ] When we focus on the things ....43. Of all states of mind , feeling grateful is considered one of the most healthy and beneficial .[ M ] When Defoe depicted Robinson ....44. The principles underlying the research into gratitude are nothing new at all .[ B ] While this research into ...45. Gratitude is likely to enhance one s sense of being connected with other people .[ H ] Gratitude also tends to strengthens a sense ...英语六级答案2023年6月——信息匹配（第三套）36. Socially prescribed perfectionism is described as one s self - esteem depending on other people s opinion .[ E ] Curran describes socially prescribed ...37. Jessica Pryor has learned that some graduate students work such long hours in the lab that they have little time for entertainment or socializing .[ A ] When psychologist Jessica Pryor ...38. The author believes perfectionism may sometimes be constructive .[ F ] Perfectionism can , of course , be ...39. It is found that perfectionism is getting more and more prevalent among college students .[ C ] What s more , perfectionism ...40. Some experts suggest parents and educators should prepare students for failures .[ H ] While educators and parents have ...41. Some therapists warn that young adults tend to pursue perfection in their work .[ B ] Along with other therapists ...42. Psychologist Amy Bach encourages her students to aim high but be content with something less than perfect .[1] Bach , who sees many students ....43. A clinical psychologist finds perfectionism is widespread among his clients .[ E ] Curan describes socially prescribed ...44. In trying to overcome perfectionism , some people are still pursuing perfection .[ K ] Brustein likes to get his perfectionist clients to create ....45. In pursuing perfection , some perfectionists fail to complete their tasks on time[ G ] Brustein says his perfectionist clients ...文档内容到此结束，欢迎大家下载、修改、丰富并分享给更多有需要的人。
(整理)药化习题-6章-答案
精品文档精品文档第六章解热镇痛药和非甾体抗炎药自测练习一、单项选择题：6-1、下列药物中那个药物不溶于NaHCO3溶液中EA. 布洛芬B. 阿司匹林C. 双氯芬酸D. 萘普生E. 萘丁美酮6-2、下列环氧酶抑制剂中，哪一个对胃肠道的副作用较小CA. 布洛芬B. 双氯芬酸C. 塞来昔布D. 萘普生E. 酮洛芬6-3、下列非甾体抗炎药物中，那个药物的代谢物用做抗炎药物EA. 布洛芬B. 双氯芬酸C. 塞来昔布D. 萘普生E. 保泰松6-4、下列非甾体抗炎药物中，那个在体外无活性AA. 萘丁美酮B. 双氯芬酸C. 塞来昔布D. 萘普生E. 阿司匹林6-5、临床上使用的布洛芬为何种异构体DA. 左旋体B. 右旋体C. 内消旋体D. 外消旋体E. 30%的左旋体和70%右旋体混合物。
6-6、设计吲哚美辛的化学结构是依于BA. 组胺B. 5-羟色胺精品文档精品文档C. 慢反应物质D. 赖氨酸E. 组胺酸6-7、芳基丙酸类药物最主要的临床作用是 EA. 中枢兴奋B. 抗血栓C. 降血脂D. 抗病毒E. 消炎镇痛6-8、下列哪种性质与布洛芬符合 CA. 在酸性或碱性条件下均易水解B. 具有旋光性C. 可溶于氢氧化钠或碳酸钠水溶液中D. 易溶于水，味微苦E. 在空气中放置可被氧化，颜色逐渐变黄至深棕色 6-9、对乙酰氨基酚的哪一个代谢产物可导致肝坏死？DA. 葡萄糖醛酸结合物B. 硫酸酯结合物C. 氮氧化物D. N-乙酰基亚胺醌E. 谷胱甘肽结合物6-10、下列哪一个说法是正确的 DA. 阿司匹林的胃肠道反应主要是酸性基团造成的B. 制成阿司匹林的酯类前药能基本解决胃肠道的副反应C. 阿司匹林主要抑制COX-1D. COX-2抑制剂能避免胃肠道副反应E. COX-2在炎症细胞的活性很低 二、配比选择题[6-11~6-15] A.HOO OOB.HOH N O精品文档 精品文档C.NN OOOHD.SOON OH O N HNE.O OH H N6-11、阿司匹林 A 6-12、 吡罗昔康 D 6-13、甲芬那酸 E 6-14、对乙酰氨基酚 B6-15、羟布宗 C [6-16~6-20]A. 4-Butyl-1- （4-hydroxyphenyl ）-2-phenyl-3,5-pyrazolidinedioneB. 2-[（2,3-Dimethylphenyl ）amino] benzoic acidC. 1-（4- Chlorobenzoyl ）-5-methoxy-2-methyl-1H-indole-3-acetic acidD. 4-Hydroxy-2-methyl-N-2-pyridinyl-2H-1,2-benzothiazine-3-carboxamide 1,1- dioxideE. 4-[5-（4-[5-（4-Methylphenyl ）-3-（trifluoromethyl ）-1H-pyrazol-1-yl]benzenesulfonamide 6-16、甲芬那酸的化学名 B 6-17、羟布宗的化学名 A 6-18、吡罗昔康的化学名 D 6-19、吲哚美辛的化学名 C6-20、塞来昔布的化学名 E [6-21~6-25]A.N N FFFS H 2NO O B.SN N HNOOH OOC.ONaNHClClOD.OOOH H精品文档 精品文档E.OOH6-21、Ibuprofen E 6-22、Naproxen D 6-23、Diclofenac sodium C 6-24、Piroxicam B6-25、Celecoxib A 三、比较选择题 [6-26~6-30]A. CelecoxibB. AspirinC. 两者均是D. 两者均不是 6-26、非甾体抗炎作用 C 6-27、COX 酶抑制剂 C 6-28、COX-2酶选择性抑制剂 A 6-29、电解质代谢作用 D6-30、可增加胃酸的分泌 B [6-31~6-35]A. IbuprofenB. NaproxenC. 两者均是D. 两者均不是6-31、COX 酶抑制剂 C 6-32、COX-2酶选择性抑制剂 D 6-33、具有手性碳原子 C 6-34、两种异构体的抗炎作用相同 A6-35、临床用外消旋体 A 四、多项选择题6-36、下列药物中属于COX-2酶选择性抑制剂的药物有 AE A.SOO N OH O N HNB.O OH NH精品文档 精品文档C.N N OOOHD.OHOFE.N NFFFS H 2NO O6-37、在下列水杨酸衍生物中那些是水溶性的？ADA.O O O OH 3NNH 3O OB.O O OON OHC.O OH OOFD.O O O OH 3NNH N HO NH 3OE.O OH OHFF五、问答题6-38、根据环氧酶的结构特点，如何能更好的设计出理想的非甾体抗炎药物？答：依据COX-1和COX-2的结构，选择具有与塞来昔布类似的分子结构，即其分子由三部分组成，五元环以及由五元环所连接的两个芳核。
环境检测上岗证试题答案-6
环境检测上岗证试题答案-6持证上岗考核⾃认定理论试卷单位：姓名：⽇期：考核项⽬：pH、挥发酚、LAS、氰化物、总氮、氨氮、凯⽒氮、SS、氯化氰、苯胺类、原吸⾦属、总铬、烷基汞、氨、⼆硫化碳、颗粒物、酚类化合物、氰化氢、降尘、硫化氢⼀、填空题1.亚甲基蓝分光光度法测定环境空⽓或废⽓中硫化氢时，样品测定与绘制校准曲线时的温度之差应不超过℃。
答案：22.盐酸萘⼄⼆胺分光光度法测定⼯业废⽓和环境空⽓中苯胺类化合物，在波长560 nm处，以为参⽐测定吸光度，以吸光度对苯胺含量绘制标准曲线。
答案：⽔3.盐酸萘⼄⼆胺分光光度法测定空⽓中苯胺类化合物，需采⽤不含有机物的蒸馏⽔，该⽔通过加少量⾼锰酸钾的溶液于⽔中，再⾏蒸馏即得，在整个蒸馏过程中⽔应始终保持，否则应随时补加⾼锰酸钾。
答案：碱性，红⾊4.《环境空⽓总悬浮颗粒物的测定重量法》（GB/T 15432—1995）⽅法的最⼩检出限是mg/m3。
①答案：0.00 15.根据《空⽓质量⼆硫化碳的测定⼆⼄胺分光光度法》（GB/T 1468—1993），采样时串联两⽀内装l0．0 ml吸收液的多孔玻板吸收管，置于中，第⼀⽀吸收管的吸收液明显呈⾊，第⼆⽀吸收管的吸收液⽆⾊或略有颜⾊，即停⽌采样。
答案：冰⽔浴黄6.根据《空⽓质量⼆硫化碳的测定⼆⼄胺分光光度法》（GB/T 14680—1 993），⽤含、的⼄醇溶液采样。
答案：铜盐、⼆⼄胺7.分光光度法测定样品时，⽐⾊⽫表⾯不清洁是造成测量误差的常见原因之⼀，每当测定有⾊溶液后，⼀定要充分洗涤，可⽤涮洗，或⽤浸泡，注意浸泡时间不宜过长，以防⽐⾊甲脱胶损坏。
答案：相应的溶剂（1+3）HNO38.⽕焰原⼦吸收光度法常⽤的锐线光源有、和蒸⽓放电灯3种。
答案：空⼼阴极灯⽆极放电灯9.校正⽕焰原⼦吸收光度法中的基体⼲扰的⽅法有、、也可在⼀定程度上校正基体⼲扰。
答案：化学预分离法加⼊⼲扰抑制剂（基体改进剂）标准加⼊法10.⽯墨炉原⼦吸收光度法分析程序通常有、、和4个阶段。
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第六章材料的化学反应和保护
§6.1 金属腐蚀的发生
练习题
1.
P 225
2.比较化学腐蚀与电化学腐蚀的异同。
试写出铁与氧反应的两种不同腐蚀的反应方程式。
这两种不同的腐蚀的腐蚀速率各受哪些因紫影响？
【解答】
2.
4. 析氢反应和吸氧反应都发生在腐蚀电池的哪个电极？写出它们
的电极反应式和电极电势的能斯特方程式。
【解答】析氢反应和吸氧反应都发生在腐蚀电池的阴极。
它们的电极反应式和电极电势的能斯特方程式：
析氢：2H ++2e
H 2↑
E(H +/H 2)=E (H +/H 2)+2303222
.lg [()/]()/RT F c H c p H p +θθ 吸氧：O 2+2H 2O+4e -
4OH -
E(O 2/ OH -)=E (O 2/ OH －)+2303424.lg ()/[()/]RT F p O p c OH c θθ-
5. 根据吸氧腐蚀的电极反应式，写出当氧分压为0.21⨯100 kPa 时的
E －pH 关系式 【解答】
O 2+2H 2O+4e -4OH - E(O 2/ OH -
)=E Ө
(O 2/ OH -
)+
0059424
.lg ()/[()/]p O p c OH c θ
θ-
= 0.401+0.01475（-0.678+4pOH ）
= 0.391+0.059pOH
= 0.391+0.059（14 pH）
＝(1.219-0.059 PH) V 3.
4.
2.
3.
4.
5.
6.
7.
8.
9.
10.
§ 6 .2 金属腐蚀的防护与利用
练习题
1、p 237
2、
3、
4、
4、原电池、腐蚀电池、电解池的两极名称各是什么？各发生什么
样的反应？
【解答】
5、
6、
7.阳极氧化的目的是什么？氧化膜的生成是哪两种不同化学反应
同时进行的结果？
【解答】阳极氧化是用电化学的方法使金属表面形成氧化膜以达到防腐蚀目的的一种工艺。
电化学氧化膜的生成是两种不同的化学反应同时进行的结果。
以铝为例，一种是Al2O3形成反应，另一种是Al2O3被电解液不断溶解的反应。
当Al2O3的生成反应的速率大于溶解速率时，氧化膜就能顺利地生长，并保持一定的厚度。
8.铜、铝合金、钢铁材料在进行化学铣削时各可选用什么腐蚀液？并写出有关化学反应方程式。
【解答】在制作印刷电路的过程中所使用的腐蚀液是FeCl3溶液，它对铜的腐蚀是相当有效的。
由于Eθ（Fe3+ / Fe2+）>> Eθ(Cu2+ / Cu)，
这使铜成为腐蚀电池的阳极而失电子溶解，此时发生的腐蚀反应是：
2FeCl3 + Cu ＝2 FeCl2 + CuCl2
因为铝是两性的，所以铣削铝合金的腐蚀液，用酸、碱都可以。
目前，最广泛使用的是碱性溶液，它是以氢氧化钠为基础的。
其反应实质如下：
2Al + 2NaOH + 2H2O ＝2NaAlO2 +3H2↑
也可以使用的酸性腐蚀液如盐酸腐蚀液，其反应为
2Al + 6HCl ＝2AlCl3 +3H2
还可以采用含有硝酸、盐酸和氢氟酸的腐蚀液。
对于不锈钢、镍合金等，可用王水添加磷酸所组成的腐蚀液。
钢铁受腐蚀的反应式为。