Improving Demonstration Using Better Interaction Techniques
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2022-2023学年重庆市育才中学校高一下学期期中英语试题1. Four Novels Recommended to ReadersCome Back for Me by Sharon Hart-GreenLoss, sufferings, memory, and, above all, the ties of family and being Jewish are the factors that weave together this whole story. Come Back for Me travels through time and place only to bring us, eventually, to the connections between generations. The main character is a young war survivor whose effort to find his sister takes him to post-war Israel.The Book Thief by Markus ZusakIt is 1939, Nazi Germany. The country is holding its breath. Death has never been busier, and will become busier still.Liesel Meminger is a little girl living outside of Munich, who tries to keep body and soul together by stealing when she meets with something she can’t resist—books. With the help of her father, she learns to read and shares her stolen books with her neighbors during bombing attacks as well as with the Jewish man hidden in her basement.Red Shoes for Rachel: Three Novellas by Boris SandlerRachel, a daughter of Holocaust survivors raised in Brighton Beach, meets with a Moldovan Jewish woman as she is tending to her disabled, elderly mother along the Coney Island boardwalk. As the two begin a relationship, the story exposes their past and the common points between the two children of Holocaust survivors raised in very different societies.Shidduchcrisis: Short Stories by Penina ShtauberLike any world, it has its stereotypes. We’ve got the mean guy and the shallow girl, the too-religious, the not-religious-enough and everyone in between, those who are in it because they want to and those who are in it because their moms made them.And mostly we’ve got the pressure, pressure on all ends.Basi cally, it’s a lot of fun, a lot of tears, a lot of arguments and some love.1. What does the main character want to do in the book Come Back for Me?A.Travel to Israel. B.Search for a family member.C.Find the way back home. D.Try his best to survive in the war.2. What is the background of the book The Book Thier!A.Family. B.War. C.School. D.City life.3. Which book describes the memories of childhood?A.Come Back for Me B.The Book ThiefC.Red Shoes for Rachel: Three Novellas D.Shidduchcrisis: Short Stories2. Charles Darwin was born into a family of thinkers. His father was a Fellow of the Royal Society (the elite circle of top British scientists),his mother was the daughter of Josiah Wedgwood,the man who founded the famous Wedgwood Potteries,and his grandfather,Erasmus Darwin,was a famous physician,thinker and philosopher who,like his grandson,spent much time studying the evolution of life.After a childhood in the town of Shrewsbury,where he was educated at the Grammar School,Darwin went up to Edinburgh University to study medicine and natural history. When he was eighteen,he left Edinburgh and went to Cambridge University,planning to enter the church,but he was more interested in science than in religion and later he abandoned theology.Shortly after graduating from Cambridge,he got a job as a naturalist on the ship H. M. S. Beagle,which was about to start on a scientific and cartographic(地图的)survey of the South American coast. The journey started in December 1831 and was to last almost five years,during which time he collected considerable documentation.Darwin was struck by the animals of the south seas,particularly by the tortoises he found on the Galapagos Islands,a group of Pacific Islands. The Galapagos tortoises,Darwin observed,differed from island to island,and this,he inferred,showed different forms of evolution,since the animals obviously came from the same origins. Darwin was also struck by the iguanas(蜥蜴)he found,and observed that those which lived in water had heads suitable for finding food among stones,while those that lived on land had a sharper head,more fit for a herbivorous(食草的)animal.Darwin developed his theory of evolution,but it was not until 1859 that he actually published it. It was instantly seen as a great milestone in scientific thought,and attracted violent argument all over Europe. Many found fault in it,and Darwin spent the rest of his life improving his theory in the light of other people's observations.1. What is the purpose of para.1?A.To honour his family.B.To increase his popularity.C.To show his family's influence on him.D.To highlight his family's contributions.2. What did Darwin end up studying at Cambridge University?A.Science. B.Theology. C.Medicine. D.Natural history.3. Why were the iguanas different from island to islandA.Because of their types. B.Because of their habitats.C.Because of their foods. D.Because of their origins.4. What can be learned about Darwin's theory of evolution?A.He felt quite content with it. B.He published it once finished.C.It caused a worldwide disagreement. D.It was a great breakthrough in science.3. Dolphins are universally regarded as some of the cleverest creatures in the world. In captivity (圈养), they can be trained to complete complex tasks such as jumping through hoops and somersaulting through the air.But their intelligence doesn’t stop there. In a recent study of cetaceans (鲸目动物)—a group of animals that includes dolphins and whales—researchers created a list of intelligent behaviors observed in 90 different cetacean species, reported the Guardian. For example, the smartest cetaceans hunt in groups, share knowledge through mimicry (模仿) and even care for each other’s children. Some even consider their behavior to be human-like.“There is the saying that‘it takes a village to raise a child’ seems to be true for both whales and humans,” Michael Muthukrishna of the London School of Economics, co-author of the study, told the Guardian.However, cetaceans don’t just use their brain power for survival. The st udy suggests that dolphins might even gossip. That’s because some species greet each other with specific whistles, just as humans greet each other by name, the Guardian reported. Sometimes, a group of dolphins whistles the “name” of a dolphin that isn’t there. Could they be speaking about their “friend” behind its back? For the researchers, dolphin small talk is a big deal. As they found that the most social cetaceans also have the largest brains, they argue that cetacean intelligence developed to meet the demands of complex social groups.Known as the “cultural brain hypothesis (假设),” it had only been used to explain the intelligence of humans and other primates (灵长目动物). The new study aimed to find a common pathway for the evolution of intelligence among biologically different species.“It is interesting to think that whale and human brains are different in their structure but have brought us to the same patterns in behavior,” Luke Rendell, a biologist at the University of St Andrews, told the Guardian.Indeed, we still have a lot to learn about our intelligent ocean-dwelling neighbors. “We don’t have to look at other planets to look for aliens,” Muthukrishna told the Guardian, “because we know that underwater there are these amazing species with so many para llels to us in their complex behaviors.”1. What does the underlined word “gossip” probably mean in Paragraph 4?A.Singing. B.Shouting. C.Chatting. D.Arguing.2. What was the aim of the recent study?A.Learn more about intelligent creatures of the sea.B.Explain the intelligence of humans and cetaceans.C.Create a list of intelligent behaviors of different cetacean species.D.See whether the intelligence of different species evolved in the same way.3. What can be inferred from the passage?A.Some cetaceans have the same intelligence as human beings.B.It is unnecessary to look for aliens and do research into them.C.Both dolphins and whales greet each other with specific whistles.D.Both dolphins and whales have a lot in common with humans in behaviors.4. What is the best title for this passage?A.Aliens living underwater.B.Intelligent creatures of the sea.C.A study of intelligent dolphins.D.Reasons for the intelligence of sea creatures.4. A small device no bigger than a toaster has generated oxygen on the surface of Mars, bringing the chances of surviving on the red planet a step closer.The Mars Oxygen In-Situ Resource Utilization Experiment, better known as Moxie, has been generating oxygen from the atmosphere on Mars, as part of N ASA’s Perseverance rover (漫游者) mission.Moxie produced breathable oxygen in seven hour-long tests conducted in various weather and atmosphere conditions since landing. During each test, the device produced six grams of oxygen, about the same as a small tre e and enough to sustain an astronaut for 15 minutes. It’s also found that even in extreme temperatures and after a Martian dust storm, Moxie continued to produce high-purity oxygen.“This is the first demonstration of actually using resources on the surfac e of another planet and transforming them chemically into something that would be useful for a human mission,” said Jeff Hoffinan, a retired astronaut and professor at MIT.NASA and the MIT team are planning to build a bigger version of Moxie, as they hope advanced models will produce enough oxygen to support a crewed mission to Mars. “We have to bring a lot of stuff from Earth to support a human mission, but oxygen is a big problem. If you can make it there, go for it and you’re way ahead of the game,” Hof finan said.The device uses pumps that absorb in carbon dioxide which is heated to 800℃and processed to separate the carbon and oxygen. Carbon monoxide (一氧化碳) is emitted as waste while the pure oxygen is left behind.Expanding the device to support a human mission to Mars presents challenges. It is needed to run continuously for 400 days, a leap from the one-hour tests and its inner temperature should be controlled stably. Moxie has proved to endure the extreme conditions on Mars, however, and theteam plan s to assess the machine’s limits in the coming months when atmosphere is thick and carbon dioxide levels are high. They say they just want to set everything as high as they dare and make as much oxygen as they can.1. What can we learn about Moxie?A.It works well in a series of tests.B.It is stopped by extreme conditions.C.It aims to purify breathable oxygen.D.It produces oxygen enough for a team.2. What is the author’s purpose by quoting Hoffinan’s words in Paragraph 5?A.To present a plan to further explore Mars.B.To demonstrate Nasa’s ambition to win the game.C.To show the plentiful and useful resources on Mars.D.To highlight the significance of making oxygen on Mars.3. Which of the following best describes the team according to the last paragraph?A.Cautious and ambitious. B.Practical and independent.C.Confident and intelligent. D.Courageous and imaginative.4. What can be a suitable title for the text?A.A Nasa Mars rover landed successfully.B.Challenges for a human mission to Mars.C.A little oxygen on Mars, a great leap forward.D.Human beings survive with oxygen made on Mars.5. Tips for Upcoming Senior TwoThe upperclassmen often describe Senior Two in No.7 High as a year with “much more homework, more frequent exams and more fierce competitions”. 1●Manage your time carefully and make the most of it.Try to study not only hard but efficiently. Make a to-do-list for your time after school. Don’t just spend quite a long time on only one subject, especially a science subject. 2 Remember to take breaks when you feel exhausted.●Treat competition in class in a right way.Competition cannot be avoided, but everyone wants to study and live in a friendly environment. Don’t treat your classmates as potential enemies. 3 By helping others solve problems, you inspire others, consolidate your own knowledge and gain lasting friendship.● 4Don’t let your former rankings limit you. What really matters is how you treat exams and rankings. Forget the class or grade rankings, but compete with yourself. In a while, you will see yourself climbing in scores and rankings.All in all, the coming new school year is sure to be full of challenges. Too much worry only adds to your difficulties in your development. 5 Wish you the best of luck in the new academic year in No.7 High!6. “I’m going to tell you a story,” I tell my class of high school seniors. “It’s a tale about love. And heart-break. And embarrassment.”Their eyes widen. I_________my throat. “In eleventh grade,” I begin, “I fell madly in love. Her name was Lewis, who I found_________. Unfortunately she had no interest in me. It was Valentine’s Day when I spilled my Valentine cards onto my desk, and I saw an enormous one, decorated beautifully. My mind_________: ‘Who could it be from?’ With trembling hands,I_________open the envelope and out fel l an image of a king, the heading of which_________ ‘To a King of a Valentine.’”I give the class a_________look. “I saw the signature and almost fainted: Lewis. Then myeyes_________up to the writing above her signature which read, ‘To the Ugliest Boy in Our Class.”“Well, it ruined Valentine’s Day for me. It shook what little_________I had in myself for a long time after. But I_________. Accidentally, I found out who did this trick. It was not her. Now I refuse to give up this holiday of love.” I smile. “And that’s why we’re going to have a party tocelebrate__________instead of rudeness”Their eyes__________. They are willing to let me take them__________I am going. I hand out some paper so they can make cards. “Now please write something positive and sin cere to everyone in the class. Even if it’s someone you__________know, there’s always something nice to say.”All these years, I’ve made it a__________in each of my class. After 20 years of teaching, I don’t think students will remember all of the grammar or vocabulary I taught them. But if all astudent__________of one of my classes are the valentines they received one long ago February, to me that makes it all worthwhile.1.A.clean B.command C.calculate D.clear2.A.generous B.mean C.fascinating D.worthy3.A.stopped B.raced C.jumped D.brought4.A.tore B.burst C.spread D.intended5.A.read B.described C.sang D.decorated6.A.frightened B.embarrassing C.shy D.meaningful 7.A.focused B.floated C.traveled D.removed8.A.love B.faith C.friendship D.sadness9.A.stood B.upgraded C.witnessed D.survived10.A.optimism B.kindness C.courage D.honesty11.A.go up B.narrow up C.close up D.light up12.A.whether B.wherever C.whenever D.however13.A.barely B.immediately C.likely D.suddenly14.A.rule B.discipline C.routine D.schedule15.A.informs B.favors C.recalls D.engages7. 阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
高三应用文写作范文背诵第一篇假设你是李华,你的美国朋友Tom得知国际马戏节将在中国北方开幕,请你用英语回信,简单介绍即将到来的国际马戏节。
注意:1. 词数100左右;2. 可以适当增加细节,以使行文连贯。
Dear Tom,Knowing that you have a great desire for the uping International Circus Festival in northern China.,I will offer you some related information.The 19th China Wuqiao International Circus Festival is set to open on Friday in Shijiazhuang, capital of north China's Hebei Province. Founded in 1987 and held every two years, the festival is the biggest and most influential event in the field of acrobatics within China, as well as one of the nation's most extensive international artistic petitions and cultural festivals.This festival will feature performances from worldrenowned circus troupes showcasing their skills in acrobatics, juggling, and animal training. The festival will also include workshops and cultural exchange activities that offer a unique opportunity for visitors to learn about the history and traditions of Chinese circus culture. I highly remend you to attend the festival and witness the amazing performances. I'm sure you will have a fantastic time!Best regards,Li Hua第二篇假定你是李华,上周在某国外网站购买了一支录音笔,收货后你发现它有很多质量问题,请根据下列提示给客服经理Miss Brown发一封电子邮件,内容包括:1.写信的目的; 2.产品录音笔问题描述; 3.你期待商家如何解决问题注意:1. 写作词数应为80左右; 2. 请按如下格式在答题卡的相应位置作答。
提升我们的效率英语作文Title: Enhancing Efficiency: Strategies for Improved Productivity。
In today's fast-paced world, efficiency is key to success in both personal and professional endeavors. Whether it's completing tasks at work, managing time effectively, or organizing daily routines, enhancing efficiency is essential for achieving goals and maximizing productivity. In this essay, we will explore various strategies to boost efficiency in different aspects of life.First and foremost, effective time management plays a crucial role in improving efficiency. Prioritizing tasks based on importance and deadlines, utilizing tools such as calendars and to-do lists, and setting realistic goals are fundamental steps towards better time management. By allocating time wisely and avoiding procrastination, individuals can accomplish more tasks in a shorter period, leading to increased productivity.Another strategy for enhancing efficiency is the adoption of technology and automation. With the advancements in digital tools and software, tasks that were once time-consuming can now be streamlined and automated. Whether it's using project management software to track progress, email filters to organize incoming messages, or scheduling apps to coordinate meetings, leveraging technology can significantly reduce manual effort and optimize workflow.Furthermore, fostering effective communication and collaboration is essential for improving efficiency, especially in team environments. Clear communication channels, regular meetings to discuss progress and address challenges, and leveraging collaborative platforms for sharing documents and ideas can facilitate smoother workflow and ensure everyone is aligned towards common goals. Additionally, delegating tasks to team members based on their strengths and expertise can distribute workload evenly and maximize efficiency.In addition to organizational strategies, maintaining a healthy work-life balance is crucial for sustaining efficiency in the long run. Adequate rest, regular exercise, and mindfulness practices can rejuvenate the mind and body, enhancing focus and productivity during working hours. Furthermore, taking regular breaks and incorporatinghobbies and leisure activities into daily routines can prevent burnout and maintain overall well-being, ultimately contributing to improved efficiency.Moreover, continuous learning and skill development are key components of enhancing efficiency. Staying updatedwith industry trends, acquiring new skills, and seeking feedback for self-improvement can enhance professional capabilities and efficiency in performing tasks. Additionally, seeking mentorship and learning from experienced individuals can provide valuable insights and strategies for optimizing performance.Lastly, embracing a mindset of continuous improvement and adaptability is essential for enhancing efficiency in a dynamic environment. Being open to feedback, learning fromfailures, and adapting to changes in circumstances or priorities can foster resilience and agility, enabling individuals to overcome challenges and achieve better outcomes.In conclusion, enhancing efficiency is a multifaceted endeavor that requires a combination of strategies and habits across various aspects of life. By prioritizing time management, leveraging technology, fostering communication and collaboration, maintaining work-life balance, investing in continuous learning, and cultivating a mindset of improvement, individuals can significantly boost their productivity and achieve success in their endeavors.。
2020-2021学年上海市徐汇区高三(上)期末英语试卷1.When educators think of literacy -- the ability to read and write -- they often place moreimportance on students' abilities to read and fully understand a piece of writing.But experts say critical and creative writing skills are equally important. And, they say, they (1)______ (overlook)too often in the classroom.Compared to reading, writing is (2)______ (active). It helps students be independent thinkers, take ownership of their stories and ideas and communicate them clearly to others, says Elyse Eidman-Aadahl. She heads the National Writing Project, (3)______ offers help for teachers who want to push students to write more.Elyse said, "I have to say (4)______ we want an education system just (5)______ (focus)on making people consumers and not on helping them be producers, thisemphasis on reading only -- which does happen in so many places -- is veryshort-sighted."She said students' writing work now usually centers on examining a text, (6)______ presenting a new idea. Writing, she said, should be "the central thing you're learning. Not writing on a test, not writing to demonstrate you're learning (7)______ someone has taught you…"Teaching reading together with writing improves both skills,says RebeccaWallace-Segall,who heads a New York City writing center, Writopia Lab.She said writing affects a person's ability to read and more than 90 percent of youngpeople in the Writopia program do not trust their writing abilities(8)______ they start.But she said they learn to enjoy the writing process and become more effective readers, too.Elyse said employers today seek workers "all the time" who can write well. Digital tools increasingly mean that people are "(9)______ (interact)with the internet through writing," she said.Young people are already writing all the time -- through text messages, emails and on social media.Elyse believes every young person today is a writer if they are connected to the internet.So,she added,"we have to help them do it in the best, most responsible, critical, prosocial way."Rebecca argues that writing also helps students work through difficulties they face in life "subconsciously"."They're not writing a story about a difficult father or directly about a bully in class,(10)______ creating a fictional scenario (电影剧本)that might feel distant enough for them to go deep into it."China has for years been protecting and restoring natural ecology and the environment,and has established a target responsibility system to improve ecological and environmental quality,developed innovative systems of (1)______ ,inspection and accountability(责任),and greatly raised the level of biodiversity conservation. It has also made steady progress in the (2)______ of 25 pilot projects for ecological protection and restoration of mountains, rivers, forests, lakes and grasslands, and put 90 percent of the earthly ecosystems and 85 percent of key wildlife populations under (3)______ regulations.While (4)______ ways to ensure harmonious coexistence between humans and nature, in line with the goals and vision of the UN Convention on Biological Diversity, China is also helping build a global ecological civilization. China was the first country to (5)______ the National Implementation Plan on the 2030 Agenda for Sustainable Development, has contributed to and participated in the Convention on Biological Diversity, and made notable progress toward 17 of the 20 Aichi Biodiversity Targets and achieved some of them before schedule. (According to the (6)______ released Global Biodiversity Outlook 5,only six Aichi Targets have been partly met at the global level). Also, the United Nations has labelled the Kubuqi Desert in the Inner Mongolia Autonomous Region(内蒙古自治区)as a desert ecological-economic (7)______ area. And the Saihanba Afforestation Community and the "1,000 Villages in Demonstration and 10,000 Villages in Renovation" project in Zhejiang Province have won the UN "Champions of the Earth" award.Further, China has announced its carbon emissions will peak before 2030 and it will reach carbon neutrality (中和,中性)by 2060 and thus boost the global fight against climate change and help(8)______ biodiversity.To (9)______ ecological and environmental protection,China has shifted fromquantitative(量的,定量的)economic growth to high-quality, green development. China understands the organic yet complex relationship between humans and nature, between the environment and people's livelihoods, and between conservation and development.And it has been making efforts to better understand the development model of (10)______ civilization that is different from that of industrial civilization, in order to build a green society, which will ensure harmonious coexistence of humans and nature as well as sustainable development.A trending new addition to travel destinations around the world is freezing-yet-beautiful Alaska. The poles,the dancing lights, and the winter wonderlands have always attracted extreme travelers --- but this time, there is more than the magical draw of the (1)______ that is inviting people up towards the corners of the globe:climate change.There's a strange form of climate anxiety,which is driving more people to places and sights that may(2)______ to exist in the coming years or decades. Alaska (3)______ the list of climate-tempted travel destinations. The northern and otherwise-serene Alaskan village of Kaktovik (4)______ a major boom in tourism last year, as over 2,000 people appeared on its lightly(5)______ gravel(砂砾)and snowy streets. Until earlier in the decade, local news reports say, the village had fewer than 50 annual visitors. The main (6)______ now are polar bears, which are being forced into towns by a warming planet and the shrinking Arctic sea ice. All the heating is making it far easier for wildlife (7)______ and effortless bear selfies. Most visitors are reportedly from China, Europe, or the USA,often arriving on fuel-consuming chartered planes.Around the mid 1990s, researchers began (8)______ more female bears denning(筑巢)on land instead of in the ice. And seasons of tourism match up with changing bear behavior. It peaks in autumn (which is also far warmer and breezier than the forthcoming winter - and climate change is making things more pleasant in general)when sea ice is far from the shore,and bears can become (9)______ on the land until the sea freezes again in winter.A report in the Climate Science Special Report:Fourth National Climate Assessment found,"Alaska has warmed more than twice as rapidly as the rest of the United States." This year, alarming temperatures were reported from Alaska. Every day since April 25 saw above (10)______ temperatures, the longest streak in a century.While bears have their charm, melting glaciers are a landscape in their own right. With (11)______ like the recent one that glaciers could be melting at 100 times faster than (12)______thought, the number of tourists on ice seems to be going up consistently. Alaska's tour companies have reported an extraordinary increase --- and the number of polar cruises reportedly went up 33 percent in the last decade. Some glaciers have been marked by the rate of melt for tourists to watch and imagine the(13)______ from where they stand, much like visitors to the Berlin wall picture the past. As the landscape changes,tour companies have had to (14)______ their regular routes and hikes too - some glaciers that had (15)______ by foot only a decade ago can now only be reached by helicopter.2. A. east B. west C. north D. south3. A. cease B. continue C. stick D. try4. A. releases B. reviews C. tops D. creates5. A. saw B. indicated C. developed D. predicted6. A. located B. populated C. upgraded D. occupied7. A. species B. attractionsC. destinationsD. identifications8. A. protecting B. evaluating C. dismissing D. spotting9. A. training B. tempting C. feeding D. noticing10. A. initiated B. inhabited C. stranded D. hunted11. A. average B. comfortable C. humiliated D. global12. A. evaluations B. predictionsC. regulationsD. generalizations13. A. carefully B. beneficially C. previously D. specially14. A. future B. currency C. temporary D. history15. A. identify B. stabilize C. eliminate D. modify16. A. view B. access C. network D. coastDThe semi-finals for the League of Legends (LOL)World Championship 2020 ended on Sunday with Chinese team Suning finally defeating another Chinese team Top Esports to earn a ticket to the final against Damwon Gaming from South Korea. The result has captured the attention of Chinese netizens, showing the huge influence of esports in China.Several hashtags(推文话题)such as "LOL Worlds semi-finals" and "Suning gets to the final" have earned more than a billion views on China's Twitter-like Sina Weibo as of Monday. Top Esports was one of favorites to win in the semi-finals,while Suning was commonly seen asa loser,but the latter finally broke through to win 3-1.After the game, one member of the defeated team, Karsa, shed tears at the event, which quickly became a hot topic on Sina Weibo.In a message posted to Sina Weibo after the competition,Top Esports said that they regret not making it to the final and that they felt sorry for their fans,"but our pursuit of victory will never stop. We will carry on with this regret."Instead of blaming them for their failure,most netizens encouraged them to try again in 2021. While many media outlets are calling Suning's win a surprise,but a commentator for an esports team based in Shanghai surnamed Zhang told the Global Times on Monday that the result is not surprising."After Top Esports barely defeated Fnatic with a 3-2 score,I felt that the entire team,except for Karsa,performed worse than before. The middle lane and bottom lane of the team were off line when playing against Suning and did not play to their usual level," Zhang said.He praised Suning, saying their skills were improving,"but the team still has a gap with Damwon Gaming. I hope they can lose as gloriously as possible."Suning,which was formed by Chinese commercial retail enterprise Suning,also posted on Sina Weibo on Sunday to thank everyone who supported the team, saying that they will try their best to guard the glory of the League of Legends Pro League.Li, a Suning fan living in Shanghai, was glad to see the team she supports win."The team has constantly grown during the Worlds this year,although all members of the team are freshmen," she said.Li was also a little regretful for Top Esports as the team is the only one that has all Chinese members."Making the impossible possible through hard work is the charm of esports. I think it is full of passion," Li said,explaining why she loves esports.17.Which team is the Chinese team Suning ready to fight against next?______A. League of LegendsB. Top EsportsC. Damwon GamingD. Fnatic18.What did Mr. Zhang, the commentator, think of the failure of Top Esports?______A. He thought that there was still a gap between Top Esports and Damwon Gaming.B. He thought that the result was not beyond his expectation.C. He believed that every one of the team had performed worse than ever before.D. He believed that Sunning's winning was just a lucky thing.19.Which of the following statements about the team Suning is correct?______A. The team is to fight against Damwon Gaming from South Korea in the semi-final.B. The team is financed by a commercial retail enterprise.C. The team consists of all Chinese members.D. The team is now equivalent to Damwon Gaming.EPeople climbing Mount Everest are two times as likely to reach the top and less likely to die on the climb than 20 years ago, a new study finds. Everest, high in the Himalayans, is the tallest mountain above sea level on Earth. It reaches 8,848 meters into the sky.Between 2006 and 2019,around two thirds of climbers were successful in their attempt to reach the top. In the 15 years before that, only about one-third went all the way to the top. The number of attempts to reach the top of Everest has risen sharply over the years, leading to a 300 percent increase in overcrowding. In 2019,955 climbers tried to reach the mountaintop. Only 222 people did so in 2000.The study noted that on a single day in May of last year, 396 climbers had gathered at the narrow path just below the top. The area, known as the "death zone," is so narrow that only a small number of climbers can pass through, one directly behind another.Nine climbers died on Everest in May 2019. It was the deadliest Everest climbing season since 2015 when an earthquake killed at least 18 people on the mountain.A picture of climbers waiting their turn to go up and down through the death zone became famous as it was shared online. Yet researchers say the crowds were not the main reason for the deaths last year."Surprisingly crowding has no evident effect on success or death" of Everest climbers, the study said.However, overcrowding does make the climb more dangerous."If crowding slows climbers (as is expected),this increases their exposure to the elements, which should increase risk of an accident or illness," said Raymond B. Huey, lead writer of the report.An unexpected storm, earthquake, or landslide could be disastrous, he told Reuters by email. Climbers have expressed concern that was giving anyone willing to pay the government $11,000 permission to climb Everest. Nepal plans to change its policy to require climbers to use guides, and meet physical fitness and experience qualifications, said tourism department official Mira Acharya.Nepal temporarily closed its mountains to climbers because of the coronavirus health crisis. Now they are open again. However, Acharya noted that flights into and within Nepal have not restarted.More than 6,000 people have climbed Mount Everest since 1953,when New Zealander Edmund Hillary and Sherpa Tenzing Norgay became the first climbers known to reach the top. At least 311 climbers have died trying.20.Supposing 900 people took part in the climbing Mount Everest between 1990 and 2005,how many of them reached the top?______A. 300.B. 400.C. 500.D. 60021.Why does overcrowding make the climbing more dangerous?______A. Because it surprisingly leads to death for those climbers.B. Because it stopped the climbers from reaching the top at the area called "death zone".C. Because it exposes climbers to increasing risk of an accident or illness.D. Because it gets climbers stranded in "death zone" and unable to get further supplies.22.According to the report, what is the possible reason for overcrowding?______A. More people want to experience the climbing to the top of Mount Everest.B. A picture of climbers waiting to reach the top inspires more people to give it a try.C. Nepal government gives climbers permission without restrictions.D. More people want to climb the Mount Everest before Nepal takes restrictions.23.What is the general idea of this passage?______A. Climbers are more likely to lose their lives before Reaching Top of Mount Everest.B. More climbers need to be trained before climbing Mount Everest.C. Enough experience in climbing mountains matters so much.D. Climbers are twice as likely to reach top of Mount Everest than in Past.FThe State-Of-The-Art-Tech Behind Fighting Fires How are today's firefighters dealing with massive wildfires?They're doing it by using the most advanced technology. Whether it's with a modified jumbo jet or innovative thermal(热的)imaging cameras, we take a look at the tech behind fighting some of the world's most overwhelming fires.Teams fighting against the California wildfires used the Global SuperTanker - a modified jumbo jet that carries almost 73,000 liters (19,200 gallons)of fire retardant(阻燃剂)- alongside the S-64 Aircrane heavy-lifting helicopter, which carries 10,000 liters (2,200 gallons)of water.These air tankers are used to put out flames and monitor fire spread through sensors and video feeds coupled to GPS data. Fed into hi-tech computer modelling software, they can help predict the fire's behavior and possible spread patterns. Computer models are able to provide small area coverage only meters wide, mapping territory and airflow. Fires are especially responsive to wind conditions and these tools allow firefighters to determine the passage of flames at ground level.But manned aircrafts need a large investment in maintenance and crew training. Command and control centers are turning to unmanned aircraft to keep costs down and provide additional capabilities. Small quadcopters(四旋翼机)and larger fixed-wing aircraft can fly over fires for much longer periods.Smoke can cover the ground for days at a time or pose a severe breathing risk to air crews - However, this is not a problem for drones. Onboard high definition, infrared(红外辐射的)and thermal imaging cameras can provide direction to ground teams, spot vital infrastructure (including power or water lines),and identify dangerous or flammable objects.Infrared and thermal cameras can see through smoke to monitor ground teams and let them know when conditions change. Unmanned aircraft can provide aerial images, heat maps, and temperature scales of fire zones. Specialist drones can even carry hoses to less accessible areas. In the future, swarms of autonomous drones could be used to track wildfires and spot fire spread.Thermal imaging technology has become widespread and less expensive to use. Handheld cameras and devices that attach to smartphones allow firefighters to see through smoke and find active fire hotspots, or undergrowth that is burning without producing smoke. Identifying these hotspots allows crews to target the most active and dangerous parts of a wildfire and divert manpower to tackle it more effectively.Augmented reality helmets that include breathing appliance alongside computer vision-aided displays are adding to the ground team's capabilities. Thermal cameras inside the helmets mean that firefighters can operate in environments completely obscured by smoke. At the same time, they can wirelessly transmit information on what is happening at the frontline to command andcontrol points.Robots are also making a difference. The Smokebot was developed by a Swedish university to assist fire and rescue services. It collects data in environments with reduced visibility using radar, a laser scanner,a thermal camera and gas sensors. Smokebot can help in forest fire situations mapping large areas filled with dust or smoke, where it is too risky to send in rescue personnel.Earth-observing satellites commonly detect wildfires in wilderness areas. Their cameras and remote sensors are used to estimate the fire's evolution and provide situational awareness that saves lives.The Visible Infrared Imaging Radiometer Suite(VIIRS)onboard the Suomi NPP satellite gives near real-time data to NASA's Fire Information for Resource Management System(FIRMS)on active fires across the world.Finally, to get the bigger picture on fire tracking and monitoring,the US Forest Service and US Geological Survey uses data from the Landsat Earth-observing satellites. Data gathered from every major fire in the country since 1984 has been fed into computer models to help predict and prevent wildfires.24.What does the underlined "they",in the third paragraph, refer to?______A. Current firefighters tackling massive wildfires.B. The modified jumbo jets and art thermal imaging cameras.C. The data gained from sensors and video feeds, plus GPS information.D. The air tankers used to put out flames and monitor fire spread.25.Which of the following is not the advantages of drones over manned aircrafts in tacklingmassive wildfires?______A. Drones don't need much fuel when putting out wildfires and identifying the causes offires.B. Less money is needed in training crews when drones are available.C. Drones won't come across any breathing problems when in work.D. Drones needs much less investment in maintenance.26.Which of the following advanced technologies is not mentioned in the passage?______A. Swarms of autonomous drones used to extinguish wildfires from air.B. AR helmets with breathing appliance alongside computer vision-aided.C. Drones with high definition, infrared and thermal imaging cameras onboard.D. Earth-observing satellites equipped with cameras and remote sensors.27.Which of the following statements about Smokebot is true?______A. It was created by a Swiss university to assist fire and rescue services.B. It can help to send rescue personnel to a fire spot.C. It can help draw a map of large areas and fill the regions with dust or smoke.D. It collects data using advanced technology where visibility is reduced due to fires.If you want to make sure that you understand this story as fully as possible, you might consider printing the article and reading it on paper. That is one of the findings of a recent study of research done on the differences between paper and screen reading.Virginia Clinton, a professor of Education, Health and Behavior at the University of North Dakota, carried out the research examination. She found what she called a "small but significant" difference in reading text from screen versus paper.Clinton's examination found that reading from paper generally led to better understanding and improved a person's performance on tests connected to the reading material. And, she found no major differences in reading speed between the two. (1)______Such differences were notable only when the reading materials were expositive texts-- or explanatory and based on fact. Clinton said she found no major difference when it came to narrative, fictional texts.Clinton also found that paper readers usually have a higher recognition of how well they have understood a text than screen readers. This skill is called metacognition. (2)______ "Metacognition" simply means thinking about one's own thinking.Clinton and other researchers have found screen readers often believe they understand a textbetter than they really do. And, they are more likely than paper readers to overestimate how well they would do on a test of the materials they have read.She said, "We think that we're reading the story or the book better than we actually are. We think we understand what we are reading better than how we are actually reading."Yet, this inflated sense of understanding, or overconfidence, is especially common among screen readers.There are many possible reasons for such findings. Overconfidence of screen readers,for example,could be the result of a distracted, less focused mind.(3)______ Research shows the majority of people --of all ages -- prefer reading from paper. But, if someone prefers screen reading to paper reading, that person's understanding of the material is not likely to suffer. Clinton said, "If you are enjoying the reading process, you're going to be more involved. You're going to be paying better attention. Preferences are a key issue here."(4)______ "If you are reading from paper, your mind thinks, 'This is something important.I need to pay attention to it'," Clinton said.Although her findings may support paper reading over screen reading, Clinton says she does not believe screen reading should be avoided.Instead, she points to new and developing tools that can be used to improve a screen reader's understanding and focus.28. A. A B. B C. C D. D E.E F. F29. A. A B. B C. C D. D E.E F. F30. A. A B. B C. C D. D E.E F. F31. A. A B. B C. C D. D E.E F. F32.Directions:Read the following passage. Summarize the main idea and the main point(s. of the passage in no more than 60 words. Use your own words as far as possible.Things to Do After You Study Many students study with little thought about what comes after their study session. But what you do after studying could have an effect on how well you learn and remember new information. Today on Education Tips, we will explore two no-cost ways that can help you improve your learning:wakeful rest and sleep.When many students finish studying, they often go straight to another activity. Butresearch suggests that resting after you study may help you remember what you studied.The basic idea is this:by reducing your activity after the study session, your brain gets a chance to rest. Resting is difficult when you have too much stimulation from electronic devices, games, lights and so on.While this might sound unusual to you,many studies have explored the benefits of resting after learning - what is called "wakeful rest." A 2019 study found that both young and older adults were able to better remember, or recollect, information from prose passages after doing wakeful rest. The findings appeared in Neuroscience Letters. This studyinvolved 45 younger people and 40 elderly adults."Wakeful resting led to higher overall recollection in both age groups," the researchers noted. If you want to give "wakeful rest"a try,here are a few simple things to do. Rest quietly for five to ten minutes. Do not look atyour phone, read stories or play games. Just limit the amount of stimulation you get. It is really that easy!In addition to wakeful rest, sleep is also important for learning. The Division of Sleep Medicine at Harvard Medical School notes that sleep helps people to learn in two ways. A report on the school's website explains that "a sleep-deprived person cannot focusattention optimally and therefore cannot learn efficiently." It also says,"sleep itself has a role in the consolidation of memory,which is essential for learning new information."Robert Stickgold, a doctor and sleep expert at Harvard Medical School, noted that new memories can be hard to keep. "When we first form memories, they're in a very raw and fragile form," he said. Sleep is important for forming memories.Now you have two suggestions for how to learn new information. Try to get some"wakeful rest" after a study session. Then try to get a good night's sleep. That's a simple way to help you remember what you learn.33.难道发展中国家不能举办世界博览会吗?(host)______34.今天我做了别人不愿做的事情,明天我就能做到别人做不到的事情。
2022学年第一学期温州十校联合体期中联考高二年级英语学科试题考生须知:1. 本卷共8页满分150分,考试时间120分钟。
2. 答题前,在答题卷指定区域填写班级、姓名、考场号、座位号及准考证号并填涂相应数字。
3. 所有答案必须写在答题纸上,写在试卷上无效。
4. 考试结束后,只需上交答题纸。
选择题部分第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What does the woman recommend the man do?A. Use similar words.B. Watch English films.C. Read a dictionary.2. What season is it now?A. Spring.B. Summer.C. Winter.3. What does the man plan to do tonight?A. Do the homework.B. Read newspaper.C. Look at shooting stars.4. Where does the conversation most likely take place?A. In a house.B. On a street.C. At a supermarket.5. Where will the woman go next?A. To Paris.B. To Berlin.C. To London.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
提高做事效率作文600字英文回答:Improving efficiency in completing tasks is essential for success in both personal and professional life. There are several strategies that can be implemented to enhance productivity and achieve better results. Firstly, setting clear goals and prioritizing tasks is crucial. By identifying the most important and urgent tasks, one can focus their energy and time on completing them efficiently. This can be done by creating a to-do list or using productivity apps that help in organizing tasks.Another effective way to improve efficiency is by eliminating distractions. In today's digital age, it is easy to get sidetracked by social media notifications, emails, or other non-essential tasks. By turning off notifications and dedicating specific time slots for checking emails or social media, one can stay focused on the task at hand. Additionally, creating a dedicatedworkspace free from distractions can also significantly improve efficiency.Furthermore, delegation and outsourcing can beeffective strategies to increase efficiency. It is important to recognize that not all tasks need to be done personally. Delegating tasks to others who are skilled in those areas can save time and allow for more focus on important tasks. Similarly, outsourcing certain tasks to professionals or freelancers can also be a cost-effective way to improve efficiency.Lastly, taking regular breaks and practicing self-care is essential for maintaining high levels of productivity. Working continuously without breaks can lead to burnout and decreased efficiency. By taking short breaks, engaging in physical exercise, or practicing mindfulness techniques, one can recharge their energy and improve focus when returning to work.In conclusion, improving efficiency in completing tasks is crucial for success. By setting clear goals, eliminatingdistractions, delegating tasks, and practicing self-care, one can enhance productivity and achieve better results.中文回答:提高做事效率对于在个人和职业生活中取得成功至关重要。
DEMONSTRATION SPEECHThe goals of your demonstration speech could be: to demonstrate a process and give the audience information while using Powerpoint. Or to show how to do something, how something is done, how to make something, or how something works with a Powerpoint.-- Start your speech writing process with selecting some demonstration topics. If you can't come up with good public speaking topics for a demonstrational presentation speech, then use the subjects listed below for inspiration.-- Ask yourself: Which of your choices have enough potential to offer your audience valuable information?-- Therefore analyze your audience. Especially for demonstration speech topics: ∙Who are they - demographics?∙What are their interests?∙What do they like?∙What are their needs?Why they are going to be gathered? This will have a lot to do with the topic that you choose.∙If you are speaking to a group of people who is there because they are taking a class and therefore wants to learn about what you are saying, you will teach themmore in depth.∙If you are speaking to a small group who has gathered just to be entertained, you'll give them more entertaining ideas and speeches.∙If you are speaking to people who are coming to you for assurance, you'll give them that with your top topic idea.-- Topics and IdeasUse this list of demonstrative speech topics to develop your own topics for a demonstrative speech. It can be anything you like. As long as you are able to present the steps of the demonstration or process speech topics. Start with one of these example phrases for setting up demonstrative ideas:∙How To Make ...∙How To Fix ...∙How To Use ...∙How To Do ...∙How ... Works∙How ... Is Done, Produced or MadeTry it with other verbs. Like the demonstration speech topics below. Just vary and tweak.How:to cook a pie - or what ever you like to cook :-)to tie a tieto be a vegetarianto fix a flat tireto create a Halloween maskto clean your carto print a digital phototo eat oystersto register for votingto read music notesto learn playing the guitarto use your breath when you singto make your garden full of flowers year aroundto build a good web siteto clean your swimming poolto clean your golf clubsto make a fast summer saladto make a new candle of old onesto make a water-colorto build a shedto prevent injuryto knot a carpetto stop thinkingto speak Italianto become a good actorto become a famous film starto write a film scriptto make honeyto blow glassto train your brainsto greet Japanese peopleto start a bed & breakfastto become the presidentto make a dish (appetizer, main course or dessert)to snow boardto board in sandor How :do air bags work.apply table manners.asphalt cement is made.do batteries work.to investigate a black box.do boomerangs work.do bulletproof vests work.to deliver an effective speech.to make the best doughnuts.to organize a prom night.to find a good roommate.to lose weight safely.to build a compost bin.an artificial pacemaker stimulates a heart.perfumes are designed.to prepare for a job interview.to register a trademark or patent.to overcome fear of public speaking.personalized rubber stamps are made.speedometers measure speed.thermometers work.antique barometers work.to get rid of roaches, mice and other pests.topographic maps are made.And so on...-- Sample outlineYour PurposeDetermine the specific purpose of your speech topics. State it in one simple sentence. For example: I want to demonstrate how to ___ .Your Central IdeaDetermine the central idea of your demonstration speech text. In other words: a clear demonstration speech topic statement. Describe what your demo presentation is aboutand why you want to share it.Example: It is important to preserve family recipes and this project is the best way in which to do that.How to Introduce Your Demonstration SpeechOnce you have decided on a demonstration speech topic, write an attractive, effective and interactive attention getting introduction.Think about these sample introductions:∙Tell them what you are going to teach them.∙Tell them why you choose to demonstrate this topic.∙Then tell them why your listeners should know how to do it.∙Tell them that they are going to do it themselves in a couple of minutes and that the only thing your audience have to do is follow your instructions.Your Demonstrative Speech Topics OutlineBackground information/History: Before presenting and demonstrating step by step, do some research on your topic, give us some background information on your “object”, “concept”: its history, its first appearance or traces, where it came from, who started it, why, how many types, etc. Better be thorough!Outline the steps of your topic. Show the activities or moves you have to make in a logical chronological order. Describe the details. Be clear. Don't think the audience will understand your demonstration speech topics immediately.Conclude each step. Do the demonstration process topic checks on the main points (attached) before you jump to the next step of this demonstrational speech topics tutorial. How to Conclude:∙Transition: A sentence signaling to the audience the end of the body part of the speech and the beginning of the concluding part of the speech.∙Paraphrasing of the Main Points: Restatement of your main points and ideas and emphasis on those parts of your speech you really want your audience toremember.∙Closing Statement: A final sentence (it may be presented in the form of a rhetorical question), where you make your lasting impact on the audience ∙Last page of your Power point. Sources: cite all your sources!-- Delivery of your Demonstration SpeechFirst and for all: think about the rules and time limit of the public speaking assignment. Plus apply these eight public speaking speech tips for delivering your demonstratio n speech topics:1. Visual aids, like objects, actual items, models or drawings can help you.2. Include personal stories and examples to illustrate your topics for a demonstrative speech.3. Provide each audience member materials and ingredients to practice with (if your topic lends itself to it).4. Insure everyone is participating.5. Look around you and see if your audience is following you.6. Ask yourself if someone in the audience has to assist with your demonstration.7. Close your speech with a memorable summary or with a clear call to action.8. Ask if there are any questions about your demonstrative speech topic ideas.Now you've developed a blueprint for good demonstration speech topics!。
ChatGPT辅助下的PPT演示评估与用户行为分析(英文中文双语版高分优质文档)PPT presentation evaluation and user behavior analysis assisted by ChatGPT (English and Chinese bilingual version with high scores and high-quality documents)Thesis title: PPT presentation evaluation and user behavior analysis assisted by ChatGPTSummary:This research aims to use PPT presentation assisted by ChatGPT for evaluation and user behavior analysis. By combining ChatGPT technology and user behavior data, we can gain a deep understanding of user behavior and reactions during PPT presentations, and gain valuable insights from them. This paper introduces the evaluation method and the steps of user behavior analysis, and verifies the effectiveness of the method through experiments.Keywords: ChatGPT, PPT presentation, evaluation, user behavior analysis, user feedback1 IntroductionPPT presentation is a common way of information transmission and presentation, and evaluating and analyzing user behavior and reactions in PPT presentations is crucial to improving presentation effects and providing better user experience. This study aims to explore the use of ChatGPT-assisted PPT presentation evaluation and user behavior analysis methods to obtain information on user engagement, understanding, and satisfaction.2. MethodIn order to realize PPT presentation evaluation and user behavior analysis assisted by ChatGPT, we take the following steps:2.1 ChatGPT auxiliary demonstrationUsing ChatGPT technology, we have developed an intelligent assistance system that can provide real-time question answers and supplementary explanations during PPT presentations. The system can have a dialogue with the user and provide relevant information according to the user's question or instruction, helping the user to better understand and participate in the presentation.2.2 Collection of User Behavior DataDuring the demonstration, we collect user behavior data, including browsing time, page turning times, questions and answers, and other information. At the same time, we also record users' evaluation and feedback on the demo content to obtain more comprehensive user participation and reaction information.2.3 Data Analysis and MiningBy analyzing and mining the collected user behavior data, we can understand the user's participation, concentration, and understanding and evaluation of different parts. We can also discover the needs and preferences of users, and provide guidance and suggestions for the optimization of presentation content.3. Experiments and resultsIn order to verify the effectiveness of ChatGPT-assisted PPT presentation evaluation and user behavior analysis, we conducted an experimental study. Participants performed PPT presentations with the ChatGPT auxiliary system and filled out relevant questionnaires. Through statistical and qualitative analysis, we draw conclusions about user engagement, understanding and satisfaction.4. Discussion and ApplicationBased on the experimental results and analysis, we discuss the limitations and potential applications of ChatGPT-assisted PPT presentation evaluation and user behavior analysis. We recognize that the method has broad application prospects in the fields of personalized learning, education training, and business presentation, and propose future research directions and improvement strategies.5 ConclusionThis study provides an effective method for optimizing presentation effects and improving user experience by using PPT presentation evaluation and user behavior analysis assisted by ChatGPT. By combining ChatGPT technology and user behavior data, we can gain a deep understanding of user behavior and reactions in PPT presentations, and provide useful insights for improving presentation content and personalizing learning.论文题目:ChatGPT辅助下的PPT演示评估与用户行为分析摘要:本研究旨在利用ChatGPT辅助下的PPT演示,进行评估和用户行为分析。
Improving Demonstration Using BetterInteraction TechniquesRichard G. McDaniel and Brad A. Myers14 January 1997CMU-CS-97-103School of Computer ScienceCarnegie Mellon UniversityPittsburgh, PA 15213Also appears as Human-Computer Interaction Institute Technical ReportCMU-HCII-97-100AbstractProgramming-by-demonstration (PBD) can be used to create tools and methods that eliminate the need to learn difficult computer languages. Gamut is a new PBD tool that can create a broader range of interactive software, including games, simulations, and educational software, than other PBD tools. To do this, Gamut uses advanced interaction techniques that make it easier for a software author to express all needed aspects of one’s program. These techniques include a simplified way to demonstrate new examples, called “nudges,” and a way to highlight objects to show they are important. Also, Gamut includes new objects and metaphors like the deck-of-cards metaphor for demonstrating collections of objects and randomness, guide objects for drawing relationships that the system would find too difficult to guess, and temporal ghosts which simplify showing relationships with the recent past.This research was partially sponsored by NCCOSC under Contract No. N66001-94-C-6037, ARP A Order No. B326, and partially by NSF under grant number IRI-9319969. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of NCCOSC, ARPA, NSF, or the U.S. Government.Keywords: Programming-by-demonstration, inductive learning, programming-by-example, appli-cation builders.1. IntroductionGamut is a innovative tool for building interactive software like games, simulations, and educational software. Much of the effort involved in producing a game or an educational tool is not in programming the game’s logic but in providing the engaging background, artwork, and gameplay that keeps players inter-ested. Artists and educators with the talent and ideas to produce good material are often unable to program computers. Thus, tools which eliminate the burden of programming while maintaining flexibility are desir-able.Traditional development tools for producing interactive software require extensive programming knowledge. Programming graphics in common environments like Visual C++ or MacApp can be difficult for even seasoned programmers. Tools such as interface builders can help software authors design the visual appearance of an application but still require programming to make the interface actually work. Application builders such as Klik & Play [9] eliminate programming but impose severe limits on the kinds of programs that can be created. Authoring tools like AuthorWare [1] or Director [10] are similarly limited and cannot easily produce complex behavior and player interactions.One method for simplifying the programming process has been programming-by-demonstration (PBD). Instead of using a textual notation, the software author builds the program by providing examples of the intended interactions between the user and the application. Examples are demonstrated using the same interface normally used to create and manipulate the application’s data. The system uses the exam-ples to infer the author’s intention and assembles code to execute the program.Our research is aimed at significantly improving and expanding what can be accomplished using PBD. Gamut has the ability to infer complex relationships that other PBD cannot through the use of improved interaction techniques. The game author is able to give Gamut more information more easily than is possi-ble in other systems without requiring the author to learn programming concepts. These interaction tech-niques provide several benefits:• A simplified method for producing examples.•An understandable way to create negative examples.•The ability to give the system specific and direct hints.•Objects and metaphors that can describe complex behaviors concisely.2. DomainGamut can make games and simulations similar to board games. These are two-dimensional with a board-like background and playing pieces that represent the game state. The domain extends well beyond Chess and Monopoly, however. By having objects react autonomously and by adding player interaction, one can create video game behaviors such as moving monsters and shooting aliens. Educational games like Reader Rabbit [17] and Playroom [5] and video games like PacMan can all be made in Gamut.The board game domain provides new challenges for a PBD system:•The interface is interactive and needs to be updated continuously. Other PBD systems assume that the inferred program manipulates static data with little or no user input.•Board games have a large number of states and modes. Game behavior can be triggered by a variety ofFigure 1: Gamut’s Main Windowevents and can have complicated relationships.•Relationships between objects and actions are often formed as long chains of other relationships which build upon each other.For example, the destination square where a piece is moved in Monopoly could be described as “the square that is the dice’s number of squares away from the square where current player’s piece currently resides.” This description depends on the configuration of the board, the number on the dice, and the player whose turn it is. Each object in the relation forms a link in the chain. Furthermore, an object like the turn indicator is not necessarily graphically or temporally connected to the other objects. Current PBD systems cannot infer this form of relationship.Gamut can be taught the rules of a game, but generally cannot create computer opponents. The differ-ence here is the difference between rules and strategy. Playing a complex game well requires strategy which is often not easily encoded as a set of rules. Gamut is designed to assemble games for humans to play, not to play the games, itself. The game author has to show the system all relationships upon which a behavior depends.3. Related WorkA number of tools make building games easier. Most construct a specific class of games such as Bill Budge’s Pinball Construction Set [2] which makes pinball simulations. A recent product is Klik & Play created by Lionet and Lamoureux [9]. In Klik&Play, the game author first draws the game objects and classifies each as background, characters, or other objects. Then the author assigns behavior to the charac-ters by picking from a list of stock behaviors. These behaviors can be customized by changing some parameters, but in general, the author is limited to built-in methods for user interaction and game play.Gamut most resembles Marquise [15]. Like Gamut, Marquise’s goal was to create whole applications. Marquise had the ability to recognize palettes of objects and could quickly infer operations such as select-ing and dragging. Marquise’s major deficiency was an inability to correct guesses by demonstration. The only method for correction was editing the inferred code using a set of unwieldy dialog boxes.PBD systems such as Wolber’s Pavlov[20] and Frank’s Grizzly Bear [4] have shown that simple heu-ristics can be used to infer many forms of graphical constraints and simple behaviors. Both of these sys-tems infer linear relationships between objects with numeric parameters (like an object’s screen position).Unfortunately, these heuristic methods start to fail when faced with the task of building a whole applica-tion. In particular, descriptions that are hierarchical, nonnumerical, or nonlinear cannot be inferred in these systems. Pavlov requires users to annotate their demonstrated behaviors with conditional guard statements in order to overcome these problems.Gamut’s inferencing ability has many factors in common with Maulsby’s Cima system [12]. Cima also has the ability to learn from hints and can learn concepts incrementally. Cima’s description language is not as powerful as Gamut’s. Cima’s statements are restricted to logic statements in disjunctive normal form (DNF) which it uses to recognize passages in a body of text. Cima currently cannot do work on behalf of the user: it just recognizes strings of text. It is unclear what the interface to Cima will be like as it was still in a prototype stage at the time of this writing.Gamut and Cima use inductive learning techniques to learn from examples. In inductive learning, algo-rithms extract the salient features from the examples and generalize them to form rules. Gamut uses two forms of induction taken from AI literature. The first is plan recognition [19] which Gamut uses to deter-mine the differences between new examples and previously learned behaviors. Plan recognition takes a chain of events and maps a higher level description upon it that explains why each event occurred. Gamut uses this to infer where the software author means to create new actions, conditions, and loops. The second form of induction is decision trees, which Gamut uses to learn the complex relationships between modes.A decision tree algorithm like ID3 [16] uses statistical measurements to map the values of a set of attributes into a domain of concept names. In Gamut, the attributes are predicates on the state of the objects in the game, and the concepts are branches in a conditional statement.4. Interaction TechniquesGamut’s interaction techniques make it possible to demonstrate not only the surface activity of the interface, but the semantics behind that activity. They allow the software author to express all the relevant relationships in an entire interactive application. The techniques can be divided into three categories: inter-action methods, which includes nudges and hint highlighting; author generated objects, such as guide objects, cards, and decks of cards; and system generated objects, such as temporal ghosts.4.1. NudgesGamut’s method for recording demonstrations is called “nudges.” The idea behind a nudge is that when the system makes a mistake or needs to learn new material, the author gives the system a little nudge. Basically, the application that the author is constructing is always running. When the running application is supposed to do something but does nothing, or does something when it is not supposed to, the author notices the problem and corrects the behavior as soon as the problem happens.There are two kinds of nudges. The first is called “Do Something.” The software author uses Do Some-thing when the system sits idle when it is supposed to be performing some action. When the author sees the system miss a cue, the author selects the object that was supposed to act and pushes the Do Something but-ton. If the system had previously seen that object perform an operation in a similar situation, the system has the opportunity to make a guess. Gamut will search behaviors that use the same starting event and behaviors that recently executed to find actions that will affect the selected object. If it finds a match, it will perform those actions as its guess. The author can accept a guess, ask the system to guess again, or reject the guess and demonstrate manually. If Gamut finds no match, it will ask the author to demonstrate the behavior manually.The second nudge is called “Stop That.” Stop That is an indication to the system that incorrect actions just occurred. The author, when noticing a deviant action, selects the object that was affected and presses the Stop That button. The system immediately undoes all actions recently performed on that object. If the object was supposed to do nothing, the author is effectively done at this point. If the object was supposed to perform a different action, the author may ask the system to make a guess as it would for the Do Something nudge. The author may also modify objects manually.For problems that do not fit neatly in the Do Something or Stop That category, pushing either button will work. When an object performs an action, but is supposed to do something else, selecting it and press-ing Do Something will cause the system to search for a new action for that object to perform. Some guesses may not undo the original problem but others may. Pressing Stop That would cause the old action to be undone and from that point the author can demonstrate or have the system guess the correct action.In an abstract sense, Do Something and Stop That represent positive and negative examples. New dem-onstrations are positive examples and are performed using Do Something. Stop That is a negative example since it asks that no action be performed in that given instance. Evidence from Frank [4] suggested that people found negative examples difficult to understand, but we suspect that those users had difficulty with the demonstration techniques in that particular system. That system and others require the author to dem-onstrate negative examples explicitly using special modes which draw attention to the example and away from the overall task. They also require the author to create a completely new demonstration. This assumes that the author understands why a bug exists and what events caused it to happen. Gamut only assumes that the author knows what was supposed to have happened and can alter the application objects to reflect that state.Making negative examples easy to demonstrate has the secondary advantage that program structure is easier to infer. Negative examples permit the learning of disjunctive logic statements which in turn permits program structures such as if-then statements to be learned without the author having to create conditions explicitly.Using nudges is an especially simple way to enter and edit examples. Demonstrating new examples and editing learned behaviors becomes the same process. Since the proportion of the actions needed to be changed or enhanced in a given behavior is likely to be small, new examples tend to require few opera-tions. Furthermore, correcting mistakes becomes an immediate process. When a bug is seen, the author can correct it right away.Nudges also reduces the number of system modes. First, the Run/Build mode distinction is eliminated.A prototype study mentioned later in this paper showed that people did not like switching between Run mode and Build mode and would often forget which mode they were in. In other systems, one can only create new objects and edit objects in Build mode. In Run mode, though, editing is turned off and the pro-gram’s behaviors are turned on so that the author may test how the application works. In Gamut, editing is always possible, and any behavior the author shows becomes active immediately. Toggle switches are usedin situations where the running and editing behaviors overlap. For example, normally a button can only be pushed in Run mode and resized and moved in Build mode. Instead, Gamut uses a toggle between two selection pointers which are part of the tool palette in Figure 1. When the normal selection is used, buttons are pushed when clicked. Using strict selection, though, causes buttons to be selected so they may be edited. Other, non-widget, objects like rectangles and lines are selected normally in both modes. Similar toggle switches are used to demonstrate input events, hide guide objects, and for hiding Gamut’s system windows.Some PBD systems require a separate recording mode to enter stimulus events. This is part of the Stimulus/Response mode distinction advocated by Wolber in Pavlov [20]. A Stimulus/Response style interface is normally implemented as an extended macro recorder. With a macro recorder, pressing “record” causes the system to record all subsequent actions. “Playing” the macro later will execute those actions in a new context. In an extended macro recorder, an additional event recording phase is added. First, the author records an event. This is often troublesome since sometimes the event is part of a com-pound event. Consider recording just the down click from the mouse. To get an down click, one must later release the button in order to move on. Other systems have solved this problem by using timers [4] or by using buttons to disambiguate [20]. The stimulus is not ambiguous in Gamut because the author is expected to nudge the system immediately when the system errs. If the event is masked by later events, the author can retrace the last few program steps using undo. This makes the last event to occur the correct stimulus and there is no need for an extra mode.4.2. Hint HighlightingIn his thesis, Kosbie suggests that a “focus hint” may be useful for improving inferencing in PBD [7].A focus hint is a special form of selection where the author points out key elements that are important to a demonstration thereby “focusing” the system’s attention on those objects. Kosbie did not actually imple-ment this feature or show how it should be used, but Gamut actually uses this notion as its primary means for soliciting hints from the author.The number of features upon which a single relationship may depend can be immeasurably large. Without a focus hint, finding the correct features requires an exponential amount of search time. Hints pro-vide direction to guide heuristic search. Good hints can reduce search to near constant time.When the right mouse button is pressed over an object, Gamut hint highlights it by drawing a green rectangle around it. Highlights around lines are seen as a thin rectangle that follows the line’s direction. Highlighting is different from normal selection which is caused by the left mouse button and presented as a conventional set of square handles. Selection is used to move, resize, and recolor objects. It is common for the author to want to hint highlight an object, perform other operations, and then highlight other objects.Maulsby studied how users generate hints in the Turvy experiment [12]. The results showed that some people give hints readily and prodigiously. Other people, however, did not provide any hints at all until the system got stuck and forced them to act. Hint highlighting provides for both styles of hint giving. High-lighting is permitted any time the author is demonstrating a new example. If the author fails to highlight objects that the system cannot guess, the system will ask the author a specific question about the situation and request that the author give a hint by highlighting something.4.3. Deck of CardsThe vast majority of modern board games use a deck of cards. Game players know that cards can be used to simulate a large variety of behaviors. For games like Monopoly, cards are a source of randomevents like the Chance deck as well as the means for storing game state such as knowing which player owns each property. Cards and decks of cards are the main data structure in Gamut. Decks may be used in the manner that one uses them in actual games, or they can serve as sources of data and randomness.Gamut’s deck of cards is not the same card metaphor found in HyperCard [6]. In HyperCard, cards are the whole application. In general, a HyperCard “stack” is a set of screen displays with links between them to denote the method and order in which displays are presented. A Gamut deck is a widget within the application. To use a deck one drags objects into it. The deck will store and maintain the order of all objects it contains.Decks have several operations. Dealing the top card is accomplished by dragging the object off of the deck. Shuffling the deck is performed by pushing a button. To find a specific card, the author uses arrow buttons to view each card in order. Putting objects into the deck is performed by dragging the object over the deck’s area. A deck may also be opened and closed which controls whether items can be added or removed. This is important to align an object over top of a deck without putting it into the deck.A deck may be used in a variety of ways not found in board games. For example, a deck can provide alternating images for an animated character. By stacking decks within decks, one can arrange to have images of a character walking in each direction. Shuffling a deck can be used to induce randomness into any behavior. An example later in this paper uses a deck to move a monster around randomly.4.4. Card WidgetThough any object may be put into a deck, Gamut also provides a card widget. A card begins as a blank area on which the author can draw graphics. The card has a viewport creating a visible portion and an offscreen portion. Any object drawn over the visible region appears on the card widget. The visible region can be adjusted and moved by direct manipulation.The common way to make a card is to draw the card’s appearance in the visible region and to put numeric, textual and other data in the offscreen region. A Chance card in Monopoly might have a picture and description in the visible portion and the amount of money that is added or subtracted from the player’s account in the offscreen part.The windowing effect provided by cards has another use. There are many kinds of games where a character moves about a large space. In this scenario, often the background moves behind the character while the character remains relatively still. One can create this effect using a card. First, the author demon-strates how the character moves through the scene by actually moving the character in the most convenient way leaving the background alone. Then one transfers the whole scene to a single card. By attaching the card’s viewing region to the character (using the group command for example), the view on the card will show the character as stationary and the background moving behind.4.5. Guide ObjectsObjects that are visible while the author is creating an application but are hidden when the application runs are called “guide objects.” Maulsby’s Metamouse [11] and Fisher et al’s Demo II [3] used these as well. A guide object shows a graphical relationship that would otherwise be invisible. Lines and arrows are used to show paths and connections. Rectangles can serve as placeholders. Guide objects can be used to demonstrate distances, locations, and even speeds.Offscreen objects are another form of guide object. These are objects that are drawn outside of any vis-ible surface like a window or a card’s viewing region. Timers, counters, buttons and other widgets are allused as offscreen objects. These objects keep state information that is not stored directly on the board. For instance, a counter can be used to track the number of moves. A timer can be used to alternate images in an animated icon.The purpose of guide objects is to enable the author to show the work involved with all behavioral rela-tionships. In AI, this is called the “hidden object” problem [19]. In essence, a hidden object is a depen-dency or variable that the author has not included in the examples being shown. Any hidden object can be demonstrated by including the proper guide object(s) to represent it. Since a guide object can be effectively anything at any place, it is virtually impossible, in general, to guess what a guide object should be. How-ever, it is possible to recognize when a relationship requires more than the author has shown. It is also pos-sible to recognize a number of situations where authors commonly forget guide objects. Gamut’s inferencing algorithms can detect when relationships have not been fully specified. When guide objects are not highlighted or need to be created, Gamut asks a question designed to stimulate the author to create the needed objects.4.6. Temporal GhostsA common problem for focus hints arises when the objects to be highlighted do not exist anymore. Interactive games are dynamic: objects are created, moved, and destroyed constantly. Temporal ghosts are a technique for keeping objects that change onscreen so that they may be highlighted. Ghosts also make the recent past visible so that the author can understand what changes have occurred.Temporal ghosts are dimmed, translucent images of objects seen in their past state. If an object is moved, a ghost will appear in the object’s original position. If the object changes color, the ghost will appear directly on top of the object but the changed portion will appear as a color dithered halfway between the beginning and end colors. Other graphical effects will likewise show as ghosts of the original appearance. Mouse input events appear as ghost cursor arrows in the scene with small letters and symbols nearby to indicate the direction of the button click or letter of the keypress as in Marquise [15].Since ghosts are predominately used for highlighting, ghosts only appear during demonstration. At the moment the author presses Do Something or Stop That, the ghosts will appear showing the state immedi-ately prior to the last event. Showing the ghosts at other times is not desirable since so many would be present that the screen would be cluttered and confusing.The use of dimming has been used by other systems to show state changes as well. Kramer’s Translu-cent Patches system used dimming and transparency to layer multiple sketches in a small area [8].4.7. DialogsThe nudges technique for recording demonstrations is designed to deliver a sense of freedom and openness. One can build new demonstrations in virtually any situation. Likewise, hints can be given as early as one wants. For beginners, this freedom can be overwhelming. Thus, Gamut provides structure dur-ing the demonstration recording modes to give authors direction.Gamut has three phases of dialog feedback during recording mode. Each phase has an associated color which the author may but is not required to notice. The zeroth level would be simply the Do Something and Stop That buttons which have no particular color. The first level, colored blue, is the state acquisition phase. In this phase, the author is only expected to modify the state of the objects to correctly represent how they are meant to change. An expert user at this point will also highlight the objects on which the behavior depends. Should the system find enough information to incorporate the example, the recording session will end and the application with continue. Expert demonstrators need never see the later dialogphases. Other operations available during the blue phase include causing objects to Stop That and asking the system to guess what an object should do.The second phase, colored magenta, is used to ask the author questions. Questions occur when the sys-tem finds a contradiction or suspects that there is a relationship where an object was not highlighted. The system will generate one question at a time based on the situation that occurred. The questions are specific and discuss objects that are immediately affected by the behavior. The system does not try to generate gen-eral questions as they tend be vague and confusing. When each relationship question is brought up, the author has three choices for response. First, one may highlight the object upon which relationship depends and press the Learn button. The system then tries to incorporate this new information to generate a descrip-tion. Second, one may choose the Replace button in cases where the original relationship or behavior was a mistake. Sometimes the author will have a change of mind and want to change a behavior drastically. The Replace button removes the old description and replaces it with a new one entirely. Finally, the third option is used in cases where the computer is confused and asks a question that is completely wrong. The Wrong button tells the computer that it has generated a bad question and that it should try a different line of rea-soning.The final phase of dialog is the yellow help phase. These dialogs come up if the system detects that the author is providing no helpful information. These dialogs offer suggestions based on the current question the system is asking. Suggestions range from telling the author how to highlight an object to pointing out what kinds of relationships the system can understand and suggesting that the author can create a guide object.5. ExampleHere is a short example showing how to produce a simple but effective behavior in Gamut. This exam-ple has been simplified considerably and shows how a behavior may be created after gaining considerable experience. A beginner would probably demonstrate something entirely different.The example is making a monster walk randomly about the screen (see Figure 3). The strategy for this behavior will be to use a deck of cards to choose between a set of four directions. The monster will move by following the direction set by the deck.First, the components are created and laid out in the main window. The monster is a bitmap image Figure 3: Making a Monster Move Randomly(a) First, the author demonstrates how the monster follows a line.The monster is moved and the arrow and ghost are highlighted.(b) Second, the author builds the deck of cards from four arrows, one pointing in each direction. The author drags each card into the deck and closes it with the leftmost icon.(c) Third, the monster is put onto the deck’s center and grouped with the deck.(d) Finally, the author demonstrates that the deck should shuffle after the monster moves.。