Common Constellations
托福词汇之constellation星座
托福词汇之constellation星座星座的英文：constellation参考例句：A constellation in the Southern Hemisphere within the Milky Way near Lupus and Ara.矩尺座南半球的星座，位于豺狼座和天坛星座附近的银河中A constellation in the Southern Hemisphere near Vela and Lupus.半人马星座南半球船帆座和天狼座附近的一个星座。
A constellation in the Northern Hemisphere near Orion and Aries.金牛座在北半球中靠近猎户座和白羊座的星座。
Circinus:a constellation in the Southern Hemisphere near Musca and Triangulum australe.圆规星:座位于南半球在苍蝇座和南三角座附近的一个星座.The gemini was about as roomy as the front seat of a small foreign car双子星座的太空囊像一辆小型外国汽车前座那么宽阔。
Ara: a constellation in the Southern Hemisphere near the constellations Norma and Telescopium.天坛(星)座:南半球靠近矩尺座及望远镜座的一个星座。
A constellation of stars一个星座A cluster of stars smaller than a constellation星群，星座比星座小的一簇星星My sign of the zodiac is Cancer.我的星座是巨蟹座。
My constellation is Great Bear.我的星座是大熊星座。
2024届上海市徐汇区高三上学期一模英语试卷
2024届上海市徐汇区高三上学期一模英语试卷学校:___________姓名：___________班级：___________考号：___________一、短对话1．A．Painting.B．Photography.C．Playing guitar.D．Cooking.2．A．Rainy days.B．Sunny days.C．Cloudy days.D．Snowy days. 3．A．Graduated.B．Got married.C．Bought a house.D．Got promoted. 4．A．Paris B．Tokyo C．Rome D．Athens5．A．Shopping B．Eating C．Reading D．Working out 6．A．Travel plans B．Career goals C．Relationship status D．Hobbies7．A．Dragon Rolls B．Sashimi C．Salmon Rolls D．Tempura Rolls 8．A．Business Administration B．Environmental Science C．Computer Science D．Psychology9．A．Entertainment only B．Medical purposes C．Education and training D．Virtual tourism10．A．Improving health B．Building muscle C．FlexibilityD．Weight loss二、短文听下面一段独白，回答以下小题。
11．A．Once a day B．Twice a day C．Three times a day D．Every other day 12．A．To improve digestion.B．To prevent bad breath.C．To enhance tooth surface.D．To reduce the risk of decayed tooth.13．A．Early detection of issues.B．Emergency tooth extraction.C．Teeth whitening procedures.D．Improving gum health.听下面一段独白，回答以下小题。
六年级英语下册人教PEP版_主题阅读：12_Constellations
12 ConstellationsLook at the pictures, read the passage and answer this question: When is your birthday? What’s your constellation?There are 12 months in a year. They are January, February, March, April, June, July, August, September, October, November and December. According to the 12 months, people set 12 constellations.Everyone can find his or her own constellation according to his or her birthday. For example, if your birthday is on June 4th, your constellation is Gemini. If your birthday is on Dec. 21st, your constellation is Sagittarius.People of different constellations have different characteristics. And people of the same constellation may get similar characteristics. For example, Virgo people want to keep everything clean and Leo people are fond of power.When is your birthday? How about your personality? Do you know your own constellation?Exercises一、Read and answer. 读句子，回答问题。
星座英语介绍constellation introduction
Gemini
Gemini
• May 21-June 21 • Property: Wind signs
（双子座）
• Symbol: smart flexible angel, earth angel of communication • Best match: Leo Sagittarius • Personality analysis: to be carried out without leaving a trace, restless, halted, it will be lightly changing Gemini. The main features of of Gemini character is free ...
Let’s line them.
Aries Taurus Gemini Cancer Leo Virgo
Continue
Capricorn Sagittarius Scorpio Pisces Aquarius Libra
• Each of the 12 astrological signs belongs to a certain element in one of its states. This gives us 12 different basic types.
Cancer
Cancer （巨蟹座）
• June 22-July 22 • Properties: Water signs • Symbol: the beginning of summer, a good example of family love • Best match: Scorpio Pisces Taurus • Personality analysis: have the enthusiasm like loving mother (father), but also filled with childlike purity, has a strong system of power. Your philosophy of life is: to make themselves and others happy as they want .
2024关于耐心的英语名言
2024关于耐心的英语名言耐心的英语名言篇11、面对成功，要有足够的耐心。
In the face of success, to have enough patience.2、耐心和恒心总会得到报酬的。
Patience and perseverance will get paid.3、育人更需耐心，耐心方显爱心。
Education need more patience, patience to show love.4、耐心是一切聪明才智的基础。
Patience is the basis of all intellect and wisdom.5、有耐心的人，能得到他所期望的。
Patient man, can get what he wanted.6、耐心点，时间能让一切都明了。
Be patient, time will make everything clear.7、只要你有耐心，总有成功的机会。
As long as you are patient, there is always a chance of success.8、谁没有耐心，谁就没有智慧。
Who dont have the patience, there is no wisdom.9、耐心等待总会遇到晴朗。
Patience always meet sunny.10、有的东西，需要我们一辈子的耐心。
Some things, we need to spend our lives in patience.11、人必须要有耐心，特别是要有信心。
Man must have patience, especially confidence.12、圣光的耐心也许是无限的，但我的不是。
The patience of the holy light may be infinite, but Im not.13、能够耐心倾听的人，是值得信赖的人。
Can the patience to listen to, is a reliable person.14、我们所需要的，或许只是耐心等待。
广东省深圳市福田区2023-2024学年高二上学期期末考试英语模拟试题(含答案)
广东省深圳市福田区2023-2024学年高二上学期期末考试英语模拟试题注意事项：1. 答题前，考生将自己的姓名、准考证号填写在答题卡上。
2. 回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。
需改动用橡皮擦干净后，再选涂其它答案标号。
回答非选择题时，将答案写在答题卡上，写在本试卷上无效。
3. 考试结束后，将本试卷和答题卡一并收回。
考试时间120分钟，满分120分。
第一部分阅读理解（共两节，满分50分）第一节（共15小题；每小题2.5分，满分37.5分）阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
AColumbia Engineering’s Summer High School Academic Program for Engineers (SHAPE) is a selective pre-college program for high school students and recent graduates. SHAPE is tailored for students with a gift for STEM: science, technology, engineering, and mathematics. Each 3-week session offers college-level, project-based courses in engineering taught by celebrated professors at the universitySHAPE gives students a more realistic picture of what it means to be an engineer, and its professional development components help students develop the skills they need to get there.CoursesSHAPE features creative problem-solving courses and exposes students to innovative engineering techniques and knowledge presented by professors. Please note that SHAPE does not provide college credit.Students gain access to the famous Makerce and state-of-the-art (最先进的) research laboratories after completing the safety training and will only do so under close guidance.SHAPE also provides students with workshops to explore career fields, professional development, and guidance on sharpening one’s college application from admissions officers. Students in the program will be visiting companies and organizations that show the classroom contentin practice.ApplicationStudents are selected based on the following criteria (标准):1. Strong academic record2. Personal statement to demonstrate excitement and interest in STEM through engagement in challenging courses, activities, projects, etc.3. Enthusiastic letter of recommendation submitted by a math or science teacher4. Creative responses to two required questions and one of the three optional questionsWe encourage all students to apply by the priority deadline of June 15, 2023, so there is no application fee. After the priority deadline, a $50 application fee is required.SHAPE is dedicated to supporting students and their families in need of financial assistance. We offer a limited number of need-based scholarships, which cover the full cost of SHAPE To be considered for a need-based scholarship, families will need to provide a recent pay receipt and complete a Family Income and Expense Worksheet.Email: for more information.1. What can we learn about SHAPE?A. It suits students talented in STEM.B. It shows the procedure of learning STEM.C. It serves as the start of students’ college life.D. It gives students chances to work with engineers.2. In SHAPE, students can ________.A. be free to explore the MakerceB. earn college credit for future studyC. put school knowledge into practiceD. be equipped with skills for engineering3. To secure a place in SHAPE, students need to ________.A. show their family financial stateB. answer all the given questionsC. pay application fees before deadlineD. prove their learning capabilityBIt’s 1:30 am in Kenya’s populated north, and 50 people are lying on their backs on the shore of a dried-up river, staring up at the night sky. These stargazers have travelled 250 miles to Samburu to witness the Perseid meteor shower (英仙座流星雨). They are not disappointed: Every few minutes,arrows of light shoot across the sky like silent fireworks.The Star Safari is organised by a Kenyan astronomer, Susan Murabana, who has brought a 50 kg, 170 cm-long telescope to allow the group to view Mars and deep-sky objects. But here in Samburu, where light pollution is minimal, the Perseid meteors—visible with the naked eye (裸眼)—steal the show.Every two months, Murabana and her husband load their telescope on to the roof of their 4×4 and set off to rural communities, where they give up to 300 children a chance to view the planets and learn about constellations (星座) and the basics of astrophysics (天体物理学). They primarily targets schools in remote areas because of her mission to give girls an opportunity that she wishes had been available to her.“When I started this work, I didn’t see people who looked like me. I was a lone ranger and I wanted to change that.” says Murabana.“There is a common misconception (误解) in Kenya that astronomy in general is hard, boring, and only for boys,” she adds. “I’d like to teach young girls that astronomy is neither of these things and that they, too, can become astronomers,” says Murabana.Murabana’s passion for astronomy began in her early 20s when her uncle invited her to join a similar outreach session organized by the Cosmos Education. “That was a gamechanger. If an outreach group had come to me when I was a young teenager, my attitude towards a career in astronomy would have been positive. I ended up studying sociology and economics, but maybe I would have desired to be an astronomer,” she says.Inspired by the Cosmos Education, Murabana completed an online master’s degree in astronomy with the James Cook University in 2011 and set up her own outreach programme. She regarded Dr. Mae Jemison, the first black woman in ce, as a role model. “I hope that one day, through this work, I will rk a chain reaction that leads to the first African woman in ce.”4. What do the underlined words “steal the show” in paragraph 2 mean?A. Ruin the effort.B. Face the challenge.C. Attract more attention.D. Keep the promise.5. Why does Murabana target girl students in remote areas?A. To help them out of poverty.B. To inspire their love of astronomy.C. To look for assistants for her work.D. To give them an edge over boys in studies.6. What can we learn about Murabana from paragraph 6?A. She enjoyed playing games.B. She longed to be an astronomer.C. She is an initiator (创始人) of Cosmos Education.D. She regretted not taking astronomy earlier.7. What’s the passage mainly about?A. The birth of a Kenyan woman astronomer.B. The prejudice against girls in rural Kenyan.C. The Kenyan astronomer bringing astronomy to the people.D. The Kenyan stargazers watching the Perseid meteors shower.CFrom rolling hills to mountain ranges, views make any road trip memorable, but for blind passengers this is part of the experience they miss. Motor company Ford tries to change that. It teamed up with GTB Roma and AedoProject — to develop a technology that will give those unfortunate passengers a way to feel nature’s beauty through their car windows.The prototype (原型) of the smart car window has a device with an outside-facing camera. With just a press of a button, the system takes a picture of the current view. The colorful picture is then turned into an image with different shades of grey through LED lights, which vibrates (震动) differently. As the finger passes over different regions of the image, its shaking movements provide feedback through the sense of touch to the person using it. The smart window also comes with a voice assistant that uses AI to identify the scene and help the passengers get information on what they’re seeing.“As the prototype started taking shape, we realized we were giving birth to a completely new language that would give blind people a new chance to visualize and experience traveling,” Federico Russo — one director of GTB Roma, said. “When the idea was at its first stage, we looked for suppliers all around the world to make it come to life.” He believes the technology can be employed not just in cars. “It could be introduced into schools and institutions for blind people as a tool that could be used in multiple ways.”The technology may show up in a Ford autonomous vehicle. It’s known that the company is testing their technology and future business model and struggling to figure out how an autonomous vehicle gives different passengers the details needed to get from one destination to another. It’s unclear when this technology will be made available. However, the idea is indeed a kind and influential action.8. How does the smart car window work?A. By sorting shaking movements.B. By recording the view with a camera.C. By translating scenery into vibrations.D. By presenting different colors.9. What can we know about the technology according to Federico Russo?A. It will have wide application.B. It will be used in schools first.C. It will be tested around the world.D. It will understand different languages.10. What difficulty is Ford facing currently?A. How to explore their future business model.B. How the technology is applied to everyday life.C. How to produce autonomous cars in large numbers.D. How an autonomous vehicle provides route information.11. Which can be the best title for the text?A. Al-based Window Adds Fun to Road TripsB. Ford Develops a System for the Blind to DriveC. Smart Window Lets Blind Passengers Feel ViewsD. Technology Makes Blind People’s Trip EnjoyableDSurvivor bias (偏见，偏差) occurs when you tend to assess successful outcomes and disregard (忽视) failures. This sampling bias paints a more promising or even misleading picture of reality.Survivor bias is a sneaky (鬼鬼祟祟的) problem that tends to slip into analyses unnoticed. For starters, it feels natural to emphasize success, whether it’s entrepreneurs, or survivors of a medical condition. We focus on and share these stories more than the failures.Think about the famous college dropouts who became highly successful, such as Mark Zuckerberg. Steve Jobs, and Bill Gates. These successful examples might make you think a college degree isn’t beneficial. However, that’s survivor bias at work! These famous individuals are at theforefront of media reports. You hear more about them because they are extraordinary. You’re not considering the millions of other college dropouts that aren’t rich and famous. You need to assess their outcomes as well.Survivor bias has even occurred in medical studies about severe diseases. Younger, healthier, and more fit patients tend to survive a disease’s initial diagnosis more frequently. Hence, they are more likely to join medical studies. On the contrary, older, weaker patients are less likely to survive long enough to participate in studies. Consequently, these studies overestimate successful disease outcomes because they are less likely to include those who die shortly after diagnosis.Undeniably, successful cases are usually more visible and easier to contact than unsuccessful cases. However, focusing on the high-performing successes and disregarding other cases introduces survivor bias. After all, you’re leaving out a significant part of the picture as it’s harder to collect data from the less successful members of a population. Incomplete data can affect your decision-making process. Put simply, survivor bias produces an inaccurate sample, causing you to jump to incorrect conclusions.To minimize the impact of survivor bias, you should find ways to draw a representative sample from the population, not just a few of successful samples. That process might call for more expense and effort, but you’ll get better results.12. What writing technique is used in Paragraphs 3 and 4?A. Making comparisons.B. Giving examples.C. Describing facts.D. Analyzing data.13. What may occur if you have a survivor bias?A. You will take all factors into account before making a final analysis.B. You will overestimate the failure rate so you may quit your project.C. You will only have partial data and reach an incorrect conclusion.D. You will be more likely to survive in unfavorable circumstances.14. What can we infer from the passage?A. People tend to lose sight of the overall statistics.B. People arc unwilling to read unsuccessful stories.C. Doctors don’t have enough expense to collect abundant samples.D. The media should be responsible for kids’ dropping out of school.15. What does the author suggest readers do to avoid survivor bias?A. Leave out the famous historic cases.B. Collect a wide enough range of samples.C. Focus on those most mentioned examples.D. Select some successful and inspiring tales.第二节（共5小题；每小题2.5分，满分12.5分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
constellation
Aquarius 水瓶座 January 20～February 18
TIPS:
Aquarius has a lot of adaptability. But you may try many new things but end up mastering none.
瓶子有非常好的适应能力。 但是你可能尝试了很多新事 物后却一事无成
Libra 天秤座 September 23～ October 23
TIPS:
Your great need to share; to be fair and impartial will help you a lot.
你要求与他人分享和 公平的愿望会给你很 大帮助
Scorpio 天蝎座 October 24～November 21
Pisces 双鱼座 February 19～March 20
TIPS:
Pisces is extremely receptive, compassionate, and other-directed.
双鱼非常善于接纳,富有同 情心,并且很为别人着想
Aries 白羊座 March 21～April 20
You might be a little bit slow-witted, but your consistency will make it up
你也许反应有一点慢,但是 你的坚毅会弥补这个缺点
Gemini 双子座 May 21～June 21
TIPS:
Your mutable motivation brings adaptability.
When You Believe
狮子
Start Of Something New
有关爱情的经典英文名言
有关爱情的经典英文名言2017-05-02爱情在指缝间承诺指缝在爱情下交缠。
love,promisedbetweenthefingersfingerrift,twistedinthelove【英国人表示感谢的说法】hanyyy:thankyou只排在第二十！ifyouwanttosay"no",sayit."maybe"isforpeoplewhoareafraidtocommit.想说不，就大胆说出来，什么也许，什么可能，那些都是留给害怕承担的人去说的。
ibelieveinthesunevenwhenit’snotshining.ibelieveinloveevenwheniamalone .ibelieveingodevenwhenheissilent.---barlowgirl即使看不到阳光，我也相信有太阳；即使自己很孤独，我也相信世间有爱；即使自己很无助，我也相信有上帝。
【constellations星座英文表达】1.白羊aries2.金牛taurus3.双子gemini4.巨蟹cancer5.狮子leo6.处女virgo7.天秤libra8.天蝎scorpio9.射手sagittarius10.摩羯capricorn11.水瓶aquarius12.双鱼pisceswhat'syourconstellation?don'tforgethowtospellit.有了你，我迷失了自我。
失去你，我多么希望自己再度迷失。
atthetouchofloveeveryonebecomesapoet.圣埃克苏佩里：爱不是彼此凝视，而是一起注视着同一个方向。
lovedoesnotconsistingazingateachother,butinlookingoutwardtogetherinthe samedirection.happinessisaperfumeyoucannotpouronotherswithoutgettin gafewdropsonyourself.幸福就像是香水，如果你不打开你就不能把它喷洒在自己身上。
中科院博士研究生英语精读教材翻译及原文整理解读
第1课知识的悖论The Paradox of KnowledgeThe greatest achievement of humankind in its long evolution from ancient hominoid ancestors to its present status is the acquisition and accumulation of a vast body of knowledge about itself, the world, and the universe. The products of this knowledge are all those things that, in the aggregate, we call "civilization," including language, science, literature, art, all the physical mechanisms, instruments, and structures we use, and the physical infrastructures on which society relies. Most of us assume that in modern society knowledge of all kinds is continually increasing and the aggregation of new information into the corpus of our social or collective knowledge is steadily reducing the area of ignorance about ourselves, the world, and the universe. But continuing reminders of the numerous areas of our present ignorance invite a critical analysis of this assumption.In the popular view, intellectual evolution is similar to, although much more rapid than, somatic evolution. Biological evolution is often described by the statement that "ontogeny recapitulates phylogeny"--meaning that the individual embryo, in its development from a fertilized ovum into a human baby, passes through successive stages in which it resembles ancestral forms of the human species. The popular view is that humankind has progressed from a state of innocent ignorance, comparable to that of an infant, and gradually has acquired more and more knowledge, much as a child learns in passing through the several grades of the educational system. Implicit in this view is an assumption that phylogeny resembles ontogeny, so that there will ultimately be a stage in which the accumulation of knowledge is essentially complete, at least in specific fields, as if society had graduated with all the advanced degrees that signify mastery of important subjects.Such views have, in fact, been expressed by some eminent scientists. In 1894 the great American physicist Albert Michelson said in a talk at the University of Chicago:While it is never safe to affirm that the future of Physical Science has no marvels in store even more astonishing than those of the past, it seems probable that most of the grand underlying principles have been firmly established and that further advances are to be sought chiefly in the rigorous application of these principles to all the phenomena which come under our notice .... The future truths of Physical Science ate to be looked for in the sixth place of decimals.In the century since Michelson's talk, scientists have discovered much more than the refinement of measurements in the sixth decimal place, and none is willing to make a similar statement today. However, many still cling to the notion that such a state of knowledge remains a possibility to be attained sooner or later. Stephen Hawking, thegreat English scientist, in his immensely popular book A Brief History of Time (1988), concludes with the speculation that we may "discover a complete theory" that "would be the ultimate triumph of human reason--for then we would know the mind of God." Paul Davies, an Australian physicist, echoes that view by suggesting that the human mind may be able to grasp some of the secrets encompassed by the title of his book The Mind of God (1992). Other contemporary scientists write of "theories of everything," meaning theories that explain all observable physical phenomena, and Nobel Laureate Steven Weinberg, one of the founders of the current standard model of physical theory, writes of his Dreams of a Final Theory (1992).Despite the eminence and obvious yearning of these and many other contemporary scientists, there is nothing in the history of science to suggest that any addition of data or theories to the body of scientific knowledge will ever provide answers to all questions in any field. On the contrary, the history of science indicates that increasing knowledge brings awareness of new areas of ignorance and of new questions to be answered.Astronomy is the most ancient of the sciences, and its development is a model of other fields of knowledge. People have been observing the stars and other celestial bodies since the dawn of recorded history. As early as 3000 B.C. the Babylonians recognized a number of the constellations. In the sixth century B.C., Pythagoras proposed the notion of a spherical Earth and of a universe with objects in it chat moved in accordance with natural laws. Later Greek philosophers taught that the sky was a hollow globe surrounding the Earth, that it was supported on an axis running through the Earth, and chat stars were inlaid on its inner surface, which rotated westward daily. In the second century A.D., Ptolemy propounded a theory of a geocentric (Earth-centered) universe in which the sun, planets, and stars moved in circular orbits of cycles and epicycles around the Earth, although the Earth was not at the precise center of these orbits. While somewhat awkward, the Ptolemaic system could produce reasonably reliable predictions of planetary positions, which were, however, good for only a few years and which developed substantial discrepancies from actual observations over a long period of time. Nevertheless, since there was no evidence then apparent to astronomers that the Earth itself moves, the Ptolemaic system remained unchallenged for more than 13 centuries.In the sixteenth century Nocolaus Copernicus, who is said to have mastered all the knowledge of his day in mathematics, astronomy, medicine, and theology, became dissatisfied with the Ptolemaic system. He found that a heliocentric system was both mathematically possible and aesthetically more pleasing, and wrote a full exposition of his hypothesis, which was not published until 1543, shortly after his death. Early inthe seventeenth century, Johannes Kepler became imperial mathematician of the Holy Roman Empire upon the death of Tycho Brahe, and he acquired a collection of meticulous naked-eye observations of the positions of celestial bodies chat had been made by Brahe. On the basis of these data, Kepler calculated that both Ptolemy and Copernicus were in error in assuming chat planets traveled in circular orbits, and in 1609 he published a book demonstrating mathematically chat the planets travel around the sun in elliptical orbits. Kepler's laws of planetary motion are still regarded as basically valid.In the first decade of the seventeenth century Galileo Galilei learned of the invention of the telescope and began to build such instruments, becoming the first person to use a telescope for astronomical observations, and thus discovering craters on the moon, phases of Venus, and the satellites of Jupiter. His observations convinced him of the validity of the Copernican system and resulted in the well-known conflict between Galileo and church authorities. In January 1642 Galileo died, and in December of chat year Isaac Newton was born. Modern science derives largely from the work of these two men.Newton's contributions to science are numerous. He laid the foundations for modem physical optics, formulated the basic laws of motion and the law of universal gravitation, and devised the infinitesimal calculus. Newton's laws of motion and gravitation are still used for calculations of such matters as trajectories of spacecraft and satellites and orbits of planets. In 1846, relying on such calculations as a guide to observation, astronomers discovered the planet Neptune.While calculations based on Newton's laws are accurate, they are dismayingly complex when three or more bodies are involved. In 1915, Einstein announced his theory of general relativity, which led to a set of differential equations for planetary orbits identical to those based on Newtonian calculations, except for those relating to the planet Mercury. The elliptical orbit of Mercury rotates through the years, but so slowly that the change of position is less than one minute of arc each century. The equations of general relativity precisely accounted for this precession; Newtonian equations did not.Einstein's equations also explained the red shift in the light from distant stars and the deflection of starlight as it passed near the sun. However, Einstein assumed chat the universe was static, and, in order to permit a meaningful solution to the equations of relativity, in 1917 he added another term, called a "cosmological constant," to the equations. Although the existence and significance of a cosmological constant is still being debated, Einstein later declared chat this was a major mistake, as Edwin Hubble established in the 1920s chat the universe is expanding and galaxies are receding fromone another at a speed proportionate to their distance.Another important development in astronomy grew out of Newton's experimentation in optics, beginning with his demonstration chat sunlight could be broken up by a prism into a spectrum of different colors, which led to the science of spectroscopy. In the twentieth century, spectroscopy was applied to astronomy to gun information about the chemical and physical condition of celestial bodies chat was not disclosed by visual observation. In the 1920s, precise photographic photometry was introduced to astronomy and quantitative spectrochemical analysis became common. Also during the 1920s, scientists like Heisenberg, de Broglie, Schrodinger, and Dirac developed quantum mechanics, a branch of physics dealing with subatomic particles of matter and quanta of energy. Astronomers began to recognize that the properties of celestial bodies, including planets, could be well understood only in terms of physics, and the field began to be referred to as "astrophysics."These developments created an explosive expansion in our knowledge of astronomy. During the first five thousand years or more of observing the heavens, observation was confined to the narrow band of visible light. In the last half of this century astronomical observations have been made across the spectrum of electromagnetic radiation, including radio waves, infrared, ultraviolet, X-rays, and gamma rays, and from satellites beyond the atmosphere. It is no exaggeration to say chat since the end of World War II more astronomical data have been gathered than during all of the thousands of years of preceding human history.However, despite all improvements in instrumentation, increasing sophistication of analysis and calculation augmented by the massive power of computers, and the huge aggregation of data, or knowledge, we still cannot predict future movements of planets and other elements of even the solar system with a high degree of certainty. Ivars Peterson, a highly trained science writer and an editor of Science News, writes in his book Newton's Clock (1993) that a surprisingly subtle chaos pervades the solar system. He states:In one way or another the problem of the solar system's stability has fascinated and tormented asrtonomers and mathematicians for more than 200 years. Somewhat to the embarrassment of contemporary experts, it remains one of the most perplexing, unsolved issues in celestial mechanics. Each step toward resolving this and related questions has only exposed additional uncertainties and even deeper mysteries.Similar problems pervade astronomy. The two major theories of cosmology, general relativity and quantum mechanics, cannot be stated in the same mathematical language, and thus are inconsistent with one another, as the Ptolemaic and Copernicantheories were in the sixteenth century, although both contemporary theories continue to be used, but for different calculations. Oxford mathematician Roger Penrose, in The Emperors New Mind (1989), contends that this inconsistency requires a change in quantum theory to provide a new theory he calls "correct quantum gravity."Furthermore, the observations astronomers make with new technologies disclose a total mass in the universe that is less than about 10 percent of the total mass that mathematical calculations require the universe to contain on the basis of its observed rate of expansion. If the universe contains no more mass than we have been able to observe directly, then according to all current theories it should have expanded in the past, and be expanding now, much more rapidly than the rate actually observed. It is therefore believed that 90 percent or more of the mass in the universe is some sort of "dark matter" that has not yet been observed and the nature of which is unknown. Current theories favor either WIMPs (weakly interacting massive particles) or MACHOs (massive compact halo objects). Other similar mysteries abound and increase in number as our ability to observe improves.The progress of biological and life sciences has been similar to that of the physical sciences, except that it has occurred several centuries later. The theory of biological evolution first came to the attention of scientists with the publication of Darwin's Origin of Species in 1859. But Darwin lacked any explanation of the causes of variation and inheritance of characteristics. These were provided by Gregor Mendel, who laid the mathematical foundation of genetics with the publication of papers in 1865 and 1866.Medicine, according to Lewis Thomas, is the youngest science, having become truly scientific only in the 1930s. Recent and ongoing research has created uncertainty about even such basic concepts as when and how life begins and when death occurs, and we are spending billions in an attempt to learn how much it may be possible to know about human genetics. Modern medicine has demonstrably improved both our life expectancies and our health, and further improvements continue to be made as research progresses. But new questions arise even more rapidly than our research resources grow, as the host of problems related to the Human Genome Project illustrates.From even such an abbreviated and incomplete survey of science as this, it appears that increasing knowledge does not result in a commensurate decrease in ignorance, but, on the contrary, exposes new lacunae in our comprehension and confronts us with unforeseen questions disclosing areas of ignorance of which we were not previously aware.Thus the concept of science as an expanding body of knowledge that will eventually encompass or dispel all significant areas of ignorance is an illusion. Scientists and philosophers are now observing that it is naive to regard science as a process that begins with observations that are organized into theories and are then subsequently tested by experiments. The late Karl Popper, a leading philosopher of science, wrote in The Growth of Scientific Knowledge (1960) chat science starts from problems, not from observations, and chat every worthwhile new theory raises new problems. Thus there is no danger that science will come to an end because it has completed its task, clanks to the "infinity of our ignorance."At least since Thomas Kuhn published The Structure of Scientific Revolutions (1962), it has been generally recognized that observations are the result of theories (called paradigms by Kuhn and other philosophers), for without theories of relevance and irrelevance there would be no basis for determining what observations to make. Since no one can know everything, to be fully informed on any subject (a claim sometimes made by those in authority) is simply to reach a judgment that additional data are not important enough to be worth the trouble of securing or considering.To carry the analysis another step, it must be recognized that theories are the result of questions and questions are the product of perceived ignorance. Thus it is chat ignorance gives rise to inquiry chat produces knowledge, which, in turn, discloses new areas of ignorance. This is the paradox of knowledge: As knowledge increases so does ignorance, and ignorance may increase more than its related knowledge.My own metaphor to illustrate the relationship of knowledge and ignorance is based on a line from Matthew Arnold: "For we are here as on a darkling plain...." The dark chat surrounds us, chat, indeed, envelops our world, is ignorance. Knowledge is the illumination shed by whatever candles (or more technologically advanced light sources) we can provide. As we light more and more figurative candles, the area of illumination enlarges; but the area beyond illumination increases geometrically. We know chat there is much we don't know; but we cannot know how much there is chat we don't know. Thus knowledge is finite, but ignorance is infinite, and the finite cannot ever encompass the infinite.This is a revised version of an article originally published in COSMOS 1994. Copyright 1995 by Lee Loevinger.Lee Loevinger is a Washington lawyer and former assistant attorney general of the United States who writes frequently for scientific c publications. He has participated for many years as a member, co-chair, or liaison with the National Conference of Lawyers and Scientists, and he is a founder and former chair of the Science andTechnology Section of the American Bar Association. Office address: Hogan and Hartson, 555 Thirteenth St. NW, Washington, DC 20004.人类从古类人猿进化到当前的状态这个长久的进化过程中的最大成就是有关于人类自身、世界以及宇宙众多知识的获得和积聚。
六年级英语天文知识练习题40题
六年级英语天文知识练习题40题1<背景文章>The solar system is made up of eight planets. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has its own unique characteristics.Mercury is the closest planet to the sun. It is very small and has a rocky surface. Venus is often called Earth's sister planet because it is similar in size and composition. Earth is the only planet known to have life. Mars is known as the Red Planet because of its reddish color.Jupiter is the largest planet in the solar system. It is a gas giant with a huge storm called the Great Red Spot. Saturn is famous for its beautiful rings. Uranus and Neptune are also gas giants and are very far from the sun.The planets in the solar system are held in place by the sun's gravity. They orbit around the sun in a specific order. The closer a planet is to the sun, the shorter its orbital period.1. Which planet is closest to the sun?A. VenusB. MercuryC. EarthD. Mars答案：B。
自己是蒙古族少年接待南方人的英语作文
全文分为作者个人简介和正文两个部分：作者个人简介：Hello everyone, I am an author dedicated to creating and sharing high-quality document templates. In this era of information overload, accurate and efficient communication has become especially important. I firmly believe that good communication can build bridges between people, playing an indispensable role in academia, career, and daily life. Therefore, I decided to invest my knowledge and skills into creating valuable documents to help people find inspiration and direction when needed.正文：自己是蒙古族少年接待南方人的英语作文全文共3篇示例，供读者参考篇1A Warm Welcome to the GrasslandsMy name is Bataar and I am a 15-year-old Mongolian boy from the vast grasslands of northern China. Our homeland is a rugged and beautiful place, with rolling hills, pristine lakes, andwide open spaces that stretch as far as the eye can see. Life here moves at a slower pace than in the bustling cities to the south, but it is filled with traditions, culture, and a deep connection to nature that has been passed down through countless generations.Today, I have the honor of welcoming a group of visitors from the southern provinces to experience a glimpse of our nomadic way of life. As you step off the train and breathe in the crisp, clean air, you may notice how different everything looks and feels compared to your hometowns. But I assure you, by the time you leave, the grasslands will have found a special place in your hearts.Let me tell you a bit about myself and my family. We are ethnic Mongolians, a minority group with our own rich culture and traditions distinct from the Han Chinese majority. For as long as I can remember, we have lived as nomadic herders, moving with our flocks of sheep, goats, horses and Bactrian camels to find the best grazing lands as the seasons change.Our home is a traditional Mongolian ger, a circular, portable dwelling made of wooden frames covered in thick feltlinings and brilliant orange coverings. From the outside, it may seem like a simple tent, but step inside and you'll find a cozy, well-appointedspace that has sheltered our families for centuries. Colorful rugs, intricately patterned wall hangings, and the warm glow of the stove in the center make it a welcoming respite from the winds that whip across the steppe.At the heart of our lives are our animals. Tending to them, ensuring they have ample grazing lands, protecting them from wolves and other predators - this is the core of our daily existence. The generous meat, milk, wool and hides they provide allow us to be self-sufficient and sustain our way of life. We treat our animals with great care and respect, for we know our fortunes are intertwined.In the evenings after a long day's work, we often gather around the fire to sing traditional Mongolian songs, share stories from our rich oral traditions, and perform dances and games that connect us to our ancestors. The ucla khuur, a traditionaltwo-stringed fiddle, fills the air with its beautiful, haunting melodies that seem to channel the spirits of our nomadic forefathers.I know your visit will be eye-opening in many ways. You may be struck by how physically demanding our lifestyle can be - the long hours in the saddle, pitching and breaking down gers as we move camp, the backbreaking labor of shearing sheep and goats.But I hope you'll also see the freedom, peace and profound simplicity that comes from living in harmony with nature, unburdened by the trappings of modern life.Of course, we Mongolians have had to adapt to some changes over the years, adopting certain technologies and practices. But our core values and deep reverence for our nomadic heritage remains unwavering. We take pride in skills like herding, hunting with trained golden eagles, horseback riding, and making the sturdy clothing, footwear and tools that allow us to thrive in this harsh yet beautiful environment.During your stay, you'll have ample opportunities to experience our way of life firsthand. Try your hand at milking cows and goats, grooming our tough little horses, or racing through the grasslands on sturdy Bactrian camels. Sample our hearty cuisine featuring lamb, yogurts, cheeses and hospitality drinks like salty milk tea and fermented mare's milk. And be sure to catch a rousing game of shagaa naadam, our "three manly games" of wrestling, archery and horse racing that are a highlight of our summer festivals.We may come from different worlds, but I'm certain that by the time you bid us farewell, you'll have a new appreciation for the ancient nomadic traditions that still endure on the grasslandsof Inner Mongolia. Our way of life is one of simplicity, resilience, and a spiritual connection to our lands and ancestors that runs deeper than any modern construct.I hope your visit opens your eyes to the diversity and richness of cultures that exist even within China's borders. We may seem worlds apart on the surface, but at our core, we all share common human hopes, values and appreciation for nature's wonders. If you leave with just a fraction of the reverence we Mongolians have for this endless sea of grasslands, our histories and traditions, then our paths will have joined in a meaningful way.So open your mind, let the endless sky rejuvenate your spirit, and embrace the adventures that await here on the boundless steppe. A warm Mongolian welcome to you all!篇2A Warm Mongolian WelcomeMy name is Batkhuu and I am a 15-year-old Mongolian boy living with my family in the rural countryside. We are a nomadic herding family, moving our gers (traditional Mongolian tents) a few times per year to find fresh grazing grounds for our animals.Life moves at a slower pace out here on the vast steppe, guided by the ancient rhythms of the seasons and the needs of our herd.A few weeks ago, my parents told me we would be hosting some very special guests – a group of students from far away in the south of China. I had heard about these rapidly developing big cities filled with sky-scrapers and dense crowds, but it was hard for me to imagine since my whole life has been out here surrounded by open grasslands and endless blue skies.When the visitors arrived after their long journey, I tried my best to make them feel welcome, just as we would welcome any traveler who needed food, shelter or hospitality. Despite the differences in our ways of life, I was struck by how their eyes sparkled with the same youthful energy and curiosity that I feel.Over the days that followed, I was proud to share with them the traditional ways of my Mongolian culture. I showed them how to set up our ger, lashing the circular wooden frames together and tensioning the wool coverings. I taught them the different names for the central poles and lattices in my native Mongolian language. They laughed as they struggled to pronounce the unfamiliar words and sounds.In the mornings, I brought the visitors out to watch my father and older brothers tending to our herds of horses, cattle,sheep and goats. They had never seen such large groups of livestock before. I could sense their surprise at the ways we can move our animals across the vast open rangelands, following the patterns of the nomadic lifestyle we have kept for generations.I taught the visitors how to mount a horse using the handcrafted wooden saddles and bridles we make ourselves. At first they were clumsy and unsure, but soon I had a few of the braver ones galloping alongside me as we raced across the open steppe, our horses' hooves kicking up the dry earth. What a thrilling experience it must have been for these city youth who have never known such freedoms.In the evenings after the day's work was done, I brought my new friends into our ger to experience our legendary hospitality. My mother had prepared great feasts of hearty soups, dumplings, dairy products and of course our famous Mongolian barbecue. The guests marveled at the rich flavors of the food and how we cooked it over open fires fueled by cow and yak dung.Around the central stove, they listened with interest as my grandfather, a celebrated player of the horsehead fiddle, recounted old Mongolian folktales through his transcendent musical storytelling. Though they could not understand the words, the soulful sounds seemed to entrance them just thesame. My sisters also performed dances in our beautifully decorated traditional costumes, spinning and twirling in movements passed down through the ages.On their final night, we all stayed up late into the night, huddled around a roaring bonfire under the canopy of a million stars blazing in the clear night sky. I taught them the Mongolian words for different celestial bodies, from the bright moon to distant planets to clouds of stars making up ancient constellations. We sang songs together about the grasslands, our nomadic way of life, and about the unbreakable bonds between the Mongol peoples and our beloved horses.Though we came from different cultures separated by thousands of kilometers, that evening I felt we had transcended all boundaries. Our souls connected through the universal languages of music, dance, oral storytelling and a shared reverence for the natural world around us. I think my visitors from the city left with a new appreciation for the richness of the Mongolian nomadic traditions.As we rode off towards our next grazing grounds, I waved farewell to my new friends, hoping they took home fond memories of the grasslands and of the warm hospitality of the Mongolian peoples. Though our ways of life are different, I amproud of my nomadic heritage and I was honored to be an ambassador representing the customs of my culture. I hope I opened a new window into the diversity of lives and experiences on this planet for my guests from the distant city. Most of all, I hope they understand that despite any differences, we are all united by our common humanity, laughter and compassion for one another.篇3A Warm Welcome from the SteppeGreetings, dear guests from the distant south! My name is Battur, and I am honored to welcome you to the vast grasslands of Mongolia. As a young nomad of the Khalkha tribe, I shall endeavor to make your stay among us as enriching and memorable as possible.You have journeyed far from your lush, verdant lands to experience the rugged beauty of the endless steppe. Here, the land stretches unbroken to the horizon in all directions, rolling like an endless ocean of waving grasses. The sky above is a brilliant azure, seemingly more immense than you could imagine, for there are no towering peaks or dense forests to obstruct the view.I can see the wonder in your eyes as you gaze upon the seemingly barren landscape. To you, it may appear desolate and inhospitable at first glance. But look more closely, and you shall perceive the stirring of life all around us. Packs of hardy little horses, the indomitable Mongolian breed, roam the plains, cropping the tough vegetation. Marmots chirp from their burrows, while skylark trills descend from unseen heights.In the distance, plumes of dust are kicked up by roaming herds of lamb and yak, tended by our nomadic herders. You may even catch a glimpse of the magnificent Mongolian gazelle, effortlessly outpacing the wind with its elegant leaps and bounds across the steppe. Though sparse, life persists and even thrives in this harsh, unyielding land.Our gers, the traditional felt tents of the Mongols, await you just over the nearest rise. You will find them a cozy and welcoming refuge from the elements on the open steppe. Within their circular confines, we will treat you to the generous hospitality that has defined our culture across the centuries.You shall dine on hearty portions of herb-flecked mants, steaming dumplings fresh from the pot. Slices of fragrant, smoked lamb and beef will be carved from hanging portions, cured over smouldering argils of dried dung. Sips of bitter milktea, pungent with charred notes, will revive you from the journey. And for dessert, heaping bowls of clotted cream and berries, a rare indulgence that makes the most of summer's bounty.In the evenings, we shall gather around the warmth of the central stove to share tales and songs as old as this very land. I will recount the legends of our most revered heroes - mighty Genghis Khan, who united the warring tribes into one nation on horseback, and Khutulun, the undefeated wrestler princess who refused all suitors until they could best her on the field. The old herders, in their wizened and craggy faces, will share nuggets of ancient wisdom hard-won from years wandering these plains.You may find our stories of epic battles and death-defying feats jarring at first. But our narrative traditions reflect the struggles and triumphs that have defined the Mongol identity for centuries. We are people shaped by the hardship and beauty of this unforgiving yet magnificent land.When night falls and the steppe cools under star-pierced skies, we shall retire to bed rolls on the soft felt floor. But before slumber claims us, I implore you to step outside and drink in the breathtaking canopy of the Milky Way. Here, far from any city's bright lights, the cosmos unfurls in all its glittering splendor across the blackest canvas imaginable. It is a humbling sight thatreminds us that for all our earthly endeavors, we are but tiny specks in the shadowed expanse of something far greater.In the mornings, you shall be awoken by the gentle nudging of our herds, ready to move on to fresh grazing grounds as the sun rises over the eastern steppe. This is the essence of our nomadic existence – a continual following of the seasons, the migrations of our animals, in step with the perpetual cycles and patterns of the natural world. Perhaps by the end of your sojourn, you too will feel attuned to these unhurried, ancient rhythms.There is much more I could share about the lands, traditions, and worldviews that have defined my people across the millennia. But I fear that words alone could never truly capture the essence of what it means to be a child of the steppe. No, that is something that can only be experienced, felt in one's bones and soul as the endless sky swallows you into its vast, eternal embrace.So open your hearts and minds, my southern friends. Shed your notions of what a hospitable land should be. Let the boundless steppe imprint itself upon you, as generations of nomads have allowed it to mold their identities, their ways of being and of understanding our place in this world.I sense you arrived as strangers, perhaps apprehensive about what a young nomad from the northern edges of the world could possibly have to offer your worldly souls. But I hope that by opening yourselves to the grandeur and hardships, the beauty and austerity of our steppe home, you shall leave as transcended beings – united with us as spiritual kin of thewind-swept, star-bathed, ever-enduring Mongolian plains.。
关于耐心的英语名言
关于耐心的英语名言耐心的英语名言篇1It is curious that our own offenses should seem so much less heinous than the offenses of others. I suppose the reason is that we know all the circumstances that have occasioned them and so manage to excuse in ourselves what we cannot excuse in others.让人奇怪的是，和别人的过错比起来，我们自身的过错往往不显得那样糟糕。
我想，其原因应该是我们知晓一切导致自己犯错的情况，因此能够设法谅解自己的错误，而别人的错误却不能谅解。
We turn our attention away from our own defects, and when we are forced by untoward events to consider them, find it easy to condone them. For all I know we are right to do this; they are part of us and we must accept the good and bad in ourselves together.我们对自己的缺点不甚关注，哪怕是在深陷困境而不得不正视它们的时候，我们也会很容易就宽恕自己。
据我所知，我们这样做是正确的。
缺点是我们自身的一部分，我们必须接纳自己的好和坏。
But when we come to judge others, it is not by ourselves as we really are that we judge them, but by an image that we have formed of ourselves from which we have left out everything that offends our vanity or would discredit us in the eyes of the world. To take a trivial instance: how scornful we are when we catch someone out telling a lie; but who can say that he has never told not one, but a hundred?但是，当我们评判别人的时候，我们不是通过真实的自我来评判，而是用一种自我形象来评判，这种自我形象完全摒弃了所有触犯我们虚荣心或任何会伤害到自己在世人眼中体面形象的东西。
鹿角和鹿腿自己的话讲英语作文
鹿角和鹿腿自己的话讲英语作文The Tale of the Antlers and the Legs.In the tranquil depths of a verdant forest, where ancient trees cast long shadows and the symphony of nature played its enchanting tune, resided an extraordinary pair—the Antlers and the Legs. Each possessed a distinct character and perspective, yet they were inextricably bound by a common destiny.The Antlers, a majestic crown of bone, adorned the head of the stately stag. Their intricate branches reached skyward, as if tracing invisible constellations. They were not merely an ornament; they were a symbol of strength, authority, and virile potency. The Stag carried them with immense pride, their presence a constant reminder of his status as a leader and protector.The Legs, in contrast, were a humble pair of sinewy limbs that propelled the Stag through the forest. They werestrong and agile, capable of traversing rugged terrain with grace and speed. Yet, they were often overshadowed by the grandeur of the Antlers, their own importance overlooked.One fateful day, as the Stag ambled through the undergrowth, a treacherous branch caught his attention. Its gnarled form presented a tempting challenge, an invitation to unlock its secrets. With newfound determination, the Stag lowered his Antlers and charged forward, eager to conquer the obstacle.However, the branch proved to be a formidable foe. It snapped beneath the force of the Antlers, sending jagged fragments flying through the air. One sharp sliver pierced the Stag's eye, causing excruciating pain and obscuring his vision.In that moment of anguish, the Stag stumbled and fell. The Legs, unable to bear the weight of their burden, collapsed beneath him. Panic surged through the forest as the mighty beast lay helpless on the ground, its once-glorious Antlers now broken and useless.As the sun began its descent, casting an eerie glow upon the scene, the Antlers and the Legs found themselves engaged in a profound dialogue. Their voices, though silent to the outside world, echoed through the corridors of their shared consciousness."Oh, Legs," lamented the Antlers, "how could you have failed me?""Antlers," replied the Legs with a heavy sigh, "it was you who led us to disaster. Your reckless pursuit of glory blinded you to the dangers that lurked in our path.""But without my Antlers," protested the Antlers, "I am nothing. They are my strength, my pride, my very essence.""And yet," retorted the Legs, "they have proved to be our undoing. They have led us to vanity and complacency, making us vulnerable to the perils of the forest."As the night wore on, the Stag lay in silence,contemplating the words of his companions. He realized that true strength did not lie solely in physical prowess or outward appearances. It lay in the balance between pride and humility, between the pursuit of personal glory and the well-being of the entire herd.With newfound wisdom, the Stag resolved to embrace a different path. He would no longer seek validation through the admiration of others. Instead, he would focus on the needs of his companions, using his remaining abilities to serve and protect them.And so, the Antlers and the Legs forged a new bond, one based on mutual respect and shared purpose. They understood that each played an essential role in the Stag's journey through life. Together, they would navigate the challenges of the forest, not as separate entities, but as a united and harmonious whole.As the first rays of dawn pierced through the canopy, the Stag rose to his feet. His Antlers were still broken, but their significance had been transformed. They were nowa reminder of both his past mistakes and his newfound wisdom.With a newfound determination, the Stag led his herd away from the treacherous branch, towards a brighter and more just future. And as they journeyed onward, the Antlers and the Legs stood side by side, their voices united in a chorus of harmony and purpose.。
初二英语译林版下册第三单元优秀作文
初二英语译林版下册第三单元优秀作文全文共3篇示例，供读者参考篇1A Lesson in GratitudeThe school bell rang, signaling the end of another arduous day of classes. I stuffed my books into my backpack and hurried out of the classroom, eager to escape the confines of the building and breathe in the fresh spring air. As I passed through the gates of our school compound, I noticed an elderly woman sitting on a small stool by the side of the road, selling roasted sweet potatoes.She looked frail and hunched over, her weather-beaten face etched with lines that spoke of a lifetime of hardship. A tattered basket lay before her, filled with the golden-brown tubers that emanated an irresistible aroma. Despite her advanced age and humble circumstances, she greeted every passerby with a warm smile and a cheerful "Buy some sweet potatoes!"Ordinarily, I would have walked straight past without a second glance. But on this particular day, something made me pause and dig into my pocket for some change. Perhaps it wasthe enticing smell, or maybe it was the old woman's unwavering optimism that caught my attention. Whatever the reason, I found myself handing her a few coins and accepting a piping hot sweet potato wrapped in newspaper.As I bit into the soft, sweet flesh, a wave of satisfaction washed over me. It was a simple pleasure, but one that I had seldom appreciated before. Too often, I took such small joys for granted, always craving more, never feeling content with what I had.That encounter with the sweet potato vendor sparked something within me – a newfound gratitude for the little things in life that bring happiness. I began to pay closer attention to the world around me, savoring the beauty in the mundane.The sound of birds chirping outside my window in the morning became a delightful wake-up call, rather than an annoying disturbance. The aroma of my mother's homemade dumplings made my mouth water in anticipation, reminding me of the love and care she poured into every meal. Even the walk to school, which I had previously viewed as a tedious chore, transformed into a peaceful respite from the chaos of the day, a chance to appreciate the changing seasons and the vibrant colors of nature.With this newfound mindset, I found myself becoming more mindful and present in every aspect of my life. In the classroom, I listened more attentively to my teachers, finding joy in the process of learning and expanding my knowledge. During breaks, I cherished the opportunity to catch up with friends, sharing laughter and creating memories that would last a lifetime.My newfound appreciation extended beyond the tangible pleasures as well. I began to value the intangible gifts that surrounded me – the love and support of my family, the camaraderie of my peers, and the guidance of my mentors. These were the true riches that money could not buy, and I felt humbled by their presence in my life.As the weeks passed, I made a conscious effort to express my gratitude more openly. I thanked my parents for their sacrifices and unconditional love, knowing that their unwavering support was the foundation upon which my dreams were built. I complimented my classmates on their achievements, genuine in my adm篇2A Trip to RememberIt was the summer before starting my second year of junior high school. Like most kids my age, I was really looking forward to the long summer break from classes and homework. My parents had planned a special family trip for us - we were going to visit my grandparents who live in a rural village several provinces away. I have to admit, I wasn't that excited at first. What kid wants to spend their vacation in some boring old village with no video games, internet or shopping malls? Little did I know just how amazing and life-changing this trip would turn out to be.The journey there itself was quite an adventure. We took trains and buses for what seemed like ages, watching the landscapes slowly transition from our familiar city surroundings to wide open countryside. The closer we got, the more rustic and basic everything looked. I remember thinking to myself "What have my parents gotten me into?"When we finally arrived, I was stunned by how simple yet peaceful the village was. No towering skyscrapers or congested roads, just endless fields, winding streams and quaint houses dotting the land. The air was crisp and fresh, without any traces of pollution. My grandparents' home was a humble but cozy little house surrounded by their gardens and small farm plots.They grew all kinds of fruits, vegetables, grains and even raised a few animals. It was the complete opposite of my modern city life.At first, the lack of urban amenities and technology made me feel bored and isolated. How could anyone live like this? But my grandparents kept us plenty busy helping them with daily chores around the homestead. We collected eggs from the chicken coop, weeded the vegetable gardens, harvested ripened crops, and so much more backbreaking farm work I had never experienced. It was tough but also strangely satisfying. I felt connected to the land and my food sources in a way I never had before.The nights were when I really started to appreciate the simple village life. With no light pollution, the star-filled night skies were breathtaking. I had never seen so many twinkling stars stretching across the velvety darkness. My grandfather showed me how to find and name some of the major constellations. We would roast sweet potatoes and corn in the courtyard fire pit while swapping stories late into the night. Those will always remain some of my most cherished childhood memories.As the days went by, I found myself becoming more and more enamored with the rhythms and traditions of village living.I loved learning about the annual cycles of planting andharvesting that villagers had followed for generations. My grandmother showed me the medicinal herbs and plants they grew to naturally treat common ailments. She explained which wild mushrooms were safe to forage and how to preserve and pickle surplus garden crops for the winter months. It was like being part of an ancient, sustainable way of life that harmoniously existed with the land, rather than constantly consuming and polluting it.I was amazed by how self-reliant and resourceful my grandparents were in providing for themselves off their small homestead. They produced most of their own food, made household items like baskets and pottery, mended their own clothes, built their own sheds and outbuildings with lumber from their trees. It was shocking to realize how dependent city life makes us on money, grocery stores, utilities and a never-ending consumption of mass-produced goods. This simple village life stood in stark contrast yet remained deeply rooted in traditions lasting centuries.Some of my favorite times were just walking the quiet dirt paths between houses and farms, greeting the friendly neighbors and taking in the surrounding natural beauty. I loved wading in the cool, clear streams catching little fish and crayfish. Ihelped some of the village kids tend to the domestic animals like goats, pigs and buffalo. I still laugh thinking about the time we let the buffalo calf loose and had to chase it through the rice paddies!At night, the village came alive with community events and festivals. There were lively music and dance performances, vendors selling delicious street foods, children's operas and even an outdoor cinema with families enjoying movies under the starry skies. It was like one big extended family of the whole village coming together to celebrate life, their traditions and simple joys. I was amazed by the strong sense of unity, identity and happiness radiating from a community with so little material wealth by modern standards.All too soon it was time for our family to return to the city. As the train pulled away from that tiny village, I stared wistfully out the window, already missing the peaceful surroundings and gentle way of life I had grown to love. Sure, I was glad to get back home to modern comforts and see my friends again. But something inside me had fundamentally shifted during those few weeks in the village.I now had a much deeper appreciation for where our food and resources come from, as well as the hard work of farmersand rural communities to provide for us. I was awakened to the rampant overconsumption, disconnection from nature, and lack of self-sustainability in urban life. Most of all, I realized how happiness and quality of life have little to do with material wealth or possessions, but more about living in balance with the land, strong community bonds, and appreciation for life's simple joys.This village experience gave me a new sense of direction and priorities. It inspired me to make some major lifestyle changes like significantly reducing waste, growing some of my own food, and finding more ways to live with less environmental impact. I've tried to hold onto the village values of treasuring traditions, family ties, and my connection to the natural world that sustains us all.I know I'll always be a city kid at heart and can't recreate that wonderful village life in its entirety here. But now, whenever I find myself feeling caught up in the hectic modern rat race, I can pause and draw wisdom from those tranquil days in my grandparents' village. I reflect on the resilient spirit, sustainable living practices, and profound contentment born from lives centered on simple pleasures, hard work and strong communities. I am eternally grateful to have had thateye-opening experience at such a formative age. It was truly a trip I will never forget.篇3My Reflections on Unit 3: Building a Beautiful WorldUnit 3 of our Yilin English textbook was all about building a more beautiful world through environmental protection, sustainable development, and caring for nature. As a teenager growing up in the modern world, I found the lessons and readings in this unit extremely relevant and thought-provoking. It really made me think deeply about the impact humans are having on the planet and what we can do to create a better, greener future.The first part focused on environmental issues like pollution, deforestation, overfishing, and climate change. The facts and figures were pretty shocking - for example, we learned that around 8 million tons of plastic ends up in the ocean every year! That just seems like an incomprehensible amount of waste. The readings described how this plastic pollution is killing marine life and destroying ecosystems. It made me feel really sad to think about all the damage we are causing through our careless actions and excessive consumption.However, the unit didn't just dwell on the negatives - it also highlighted inspirational people and organizations working hard to protect the environment. We learned about teenage activists like Greta Thunberg who are bravely speaking out and trying to drive change. It was awesome reading about her journey from just a lone student protesting outside the Swedish parliament to becoming a global figure and inspirational leader. If she can have such a massive impact at such a young age, it makes me feel like any of us could also make a difference.We also studied about some really cool technological innovations that could help build a more sustainable world, like renewable energy from solar, wind, and hydroelectric sources. Some of the pictures of futuristic eco-cities looked amazing, with housing integrated into lush greenery, urban farms, and zero waste production. It seems like human ingenuity and creativity could hold the key to overcoming environmental challenges if we make it a true priority. I just hope we run out of resources before we run out of new ideas!In the readings, I also learned a lot about the importance of biodiversity and how every species and ecosystem plays a crucial role in the health of the entire planet. For example, bees and other pollinators are absolutely vital for growing much of thefood we eat. And the rainforests don't just produce oxygen, they may also hold cures for diseases that haven't even been discovered yet. It made me realize that when we damage nature, we're essentially sawing off the branch we're sitting on. We need to appreciate the invaluable services the natural world provides for us rather than taking it for granted.The unit even connected environmental themes to other subjects like history, explaining how many past civilizations like the Easter Islanders declined due to depleting their natural resources. It reminds me that ecological neglect and overexploitation has been the downfall of many once-great societies. Hopefully we as the current world leaders can learn from their cautionary tales.Personally, one of the things that impacted me the most was the discussion around our consumer culture and how the drive to constantly buy new products leads to so much waste and depletion of raw materials. It made me take a step back and really examine my own habits - like how I insist on having the latest smartphone model every year or how I mindlessly throw away tons of plastic packaging. I realized that making even small changes like buying less, recycling more, and reducing my consumption footprint could have a positive ripple effect.This unit didn't just lectureus though - it gave us lots of practical tips for greener living that I'll definitely try to incorporate into my daily life. Simple things like carrying a reusable bottle and bag, eating less meat, biking or walking instead of driving, and turning off lights and electronics when not in use. They may seem like small actions, but the reading said if everyone committed to doing them, it could make a huge collective difference. Every little bit counts when it comes to conservation!Overall, I'd say Unit 3 really drove home the urgent need to prioritize environmental sustainability for the sake of our own survival and that of future generations. At the same time, it inspired hope that creative solutions and eco-conscious choices can pave the way to a greener, more livable world. It showed that while environmental challenges are enormous, they aren't insurmountable if we all do our part.As a class, we even brainstormed our own ideas for an environmental proposal to make our school or local community more eco-friendly. Our group's idea was to start a recycling competition between classrooms and award the one that recycles the most each month. We'd also do education campaigns and put recycling bins everywhere to make it easy forstudents and teachers. It felt great to turn our environmental awareness into action through activities like this.At the end of the day, while I certainly don't have all the answers, this unit opened my eyes and made me feel a greater sense of responsibility to be a better environmental steward. Our teachers always say knowledge is power, and now that I'm more informed about what's at stake, I feel empowered to make green choices and advocate for positive change in my daily life. Because the reality is, we all have a role to play in building a healthy, sustainable, and beautiful world for ourselves and future generations.。
四年级英语自然现象描述单选题40题
四年级英语自然现象描述单选题40题1. When it is ______, we can see the sun shining brightly.A. sunnyB. rainyC. cloudyD. snowy答案解析：A。
本题考查对不同天气状况词汇的理解。
“sunny”表示晴朗的，当天气晴朗的时候，我们能看到太阳明亮地照耀着，这符合题意。
选项B“rainy”是下雨的，下雨的时候看不到太阳明亮地照耀。
选项C“cloudy”是多云的，多云天气太阳不会明亮地照耀。
选项D“snowy”是下雪的，下雪时也不会有太阳明亮地照耀。
2. We usually take an umbrella when it is ______.A. sunnyB. rainyC. windyD. foggy答案解析：B。
这题考查天气词汇和生活常识。
“rainy”表示下雨的，下雨的时候我们通常会带伞。
选项A“sunny”晴朗天气不需要带伞。
选项C“windy”是有风的，有风天气不一定需要带伞。
选项D“foggy”是有雾的，有雾天气也不是必须带伞的情况。
3. It is ______ today. The sky is full of clouds.A. sunnyB. cloudyC. rainyD. stormy答案解析：B。
本题主要看对“cloudy”这个词的掌握。
“cloudy”意思是多云的，句子中提到天空布满了云，所以是多云天气。
选项A“sunny”晴朗的天空不会布满云。
选项C“rainy”下雨的天气题干未体现下雨相关内容。
选项D“stormy”暴风雨的，题干没有暴风雨的迹象。
4. When it is ______, the wind blows strongly.A. windyB. sunnyC. snowyD. rainy答案解析：A。
“windy”表示有风的，当有风的时候风会强烈地吹，这是对“windy”这个单词含义的考查。
介绍香蕉英语作文
Bananas are a popular fruit enjoyed by many around the world for their taste, nutritional benefits,and versatility in cooking and baking.Heres an essay to introduce bananas in English:The Fruit of Life:BananasBananas are a staple fruit in many countries,known for their distinctive curved shape, bright yellow color,and sweet,creamy texture.They are a member of the Musaceae family and are native to Southeast Asia,but today,they are cultivated in tropical regions across the globe.Historical SignificanceBananas have been a part of human diets for thousands of years.Ancient records from India and China indicate that bananas were consumed as early as1000BC.They were introduced to the Americas by Portuguese sailors in the16th century,and their popularity has only grown since.Nutritional ValueBananas are packed with essential nutrients.They are an excellent source of potassium, which is vital for maintaining a healthy blood pressure and proper muscle function.They also contain vitamin C,vitamin B6,and dietary fiber,which aids in digestion and helps maintain a healthy gut.Health BenefitsRegular consumption of bananas has been linked to numerous health benefits.They are known to boost energy levels due to their high carbohydrate content,making them a favorite among athletes and fitness enthusiasts.Additionally,the fiber in bananas can help lower cholesterol levels and support weight loss efforts.Culinary UsesBananas are incredibly versatile in the kitchen.They can be enjoyed raw,added to smoothies,or used as a natural sweetener in baking.Banana bread,pancakes,and muffins are popular recipes that incorporate this fruit.They can also be grilled,fried,or used in savory dishes for a unique flavor twist.Environmental ImpactBanana farming has both positive and negative environmental impacts.On the positive side,banana plants help to purify the air and can be part of sustainable farming practices. However,the monoculture farming of certain banana varieties can lead to soil depletion and reliance on pesticides,which can harm the environment and local ecosystems.Cultural SignificanceIn many cultures,bananas hold symbolic meanings.In some African cultures,they represent fertility and prosperity.In others,they are used in religious ceremonies and are considered a gift of goodwill.Varieties and SelectionThere are over1,000varieties of bananas,ranging from the common Cavendish,which is widely consumed in the West,to the smaller,sweeter varieties like the Lady Finger or the plantain,which is often used in cooking.When selecting a banana,look for firmness,a bright color,and an absence of bruises or cuts.ConclusionBananas are more than just a fruit they are a symbol of health,culture,and global trade. Their sweet taste and numerous health benefits make them a favorite snack for people of all ages.Whether enjoyed on their own or incorporated into a variety of dishes,bananas continue to be a beloved part of diets worldwide.This essay provides a comprehensive introduction to bananas,covering their history, nutritional benefits,culinary uses,environmental impact,cultural significance,variety, and selection tips.。
邀请外国朋友来我家玩一天英语作文
邀请外国朋友来我家玩一天英语作文全文共3篇示例，供读者参考篇1An Invitation to Experience My Home and CultureDear Maria,I hope this letter finds you well and enjoying your exchange student experience so far in my home country. I wanted to extend a warm invitation for you to come spend a day at my family's home. It would be my great pleasure to host you and give you a glimpse into our traditional way of life and cultural customs.As an international student yourself, I'm sure you understand the value of immersing oneself in another culture beyond just reading about it in books or seeing it portrayed on television. There is no substitute for authentic lived experiences and first-hand observations to truly appreciate the richness and nuances of how others live their daily lives. I would be honored to be your guide and help you gain this deeper understanding during your stay with us.Let me give you a sneak preview of what you can expect during your visit! We will start the day early, around 7am, with a typical breakfast that my mother lovingly prepares each morning. You'll get to sample several of our staple dishes like [insert examples of local breakfast foods]. Don't be surprised if some of the foods seem a bit unusual to you at first - that's all part of the cultural exchange experience! My mother prides herself on her cooking skills that have been passed down through generations.After breakfast, I thought it would be fun for us to explore the local outdoor market where we do our weekly shopping for fresh produce, spices, and other household goods. The vibrant sights, sounds, and aromas are truly a feast for the senses. You'll get to interact directly with the friendly vendors and maybe even practice haggling for bargains like a local! The market is the heart and soul of our community where people from all walks of life congregate.Once we've worked up an appetite from our market adventures, we'll return home for the main midday meal, which is the biggest of the day in our culture. This is when the entire extended family traditionally gathers together. You'll meet my grandparents, aunts, uncles, and cousins who live nearby. They will be delighted to have a foreign guest join us and will surelyply you with countless questions about your home country out of pure curiosity and warmth! Get ready for second and third helpings as my family firmly believes in showing hospitality through generous portions.The early afternoon is typically a rest period where we retreat from the heat and crowds. This will give you a chance to relax and digest that delicious home-cooked meal. We can spend this quiet time having a chat over some traditional hot beverages while I explain some of the customs you've witnessed so far.Later in the afternoon, I've asked my father if he can take us on a tour of his workplace to give you an up-close look at a typical [insert example of a common local occupation]. You'll get to see first-hand the tools, techniques, and labor involved in this trade. My father has a way of making even the most mundane tasks seem fascinating through his stories and pride in his craftsmanship. This will be eye-opening for you to appreciate how different cultures approach work and livelihoods.As the evening approaches, we'll make our way back home where you'll get to experience one of my favorite pastimes - watching a popular local television drama series with my family after dinner. These shows are beloved for their melodramaticplots and insights into our cultural values and family dynamics. Get ready to ask me lots of questions as I translate the rapid dialogue and explain all the jokes, references, and nuances that get lost in translation!Finally, we'll end our eventful day by spending some time outdoors under the starry night sky. Weather permitting, we can have a cup of hot tea while I teach you about some of the myths and legends surrounding the constellations based on our ancient folklore. This tranquil moment will be the perfect peaceful bookend to your cultural immersion experience.So what do you think, Maria? I truly hope you'll accept my invitation to spend this special day with me and my family. It would mean so much to all of us to share a piece of our world with you. Please let me know if you need any other details or have particular interests you'd like me to arrange. I'll do my best to tailor our activities to make this a memorable day for you.I eagerly await your response! Until then, I remain...Your friend,[Your name]篇2An Invitation for My Foreign Friend to VisitHey Samantha! I hope this letter finds you well. I've been meaning to write to you and extend an invitation. How would you like to come visit me for a day and experience life in my home? I think it would be a fun cultural exchange, and a chance for you to see firsthand how a typical family in my country lives. Let me give you all the details!First off, let me describe my family to you. I live at home with my parents and younger brother. My dad works as an accountant downtown, while my mom is a teacher at the local elementary school. My little brother Ravi is 10 years old and absolutely obsessed with baseball—he can rattle off stats for every player in the league!Our home itself is a modest two-story house in the suburbs. We have a decent-sized backyard where we like to barbecue and hang out when the weather is nice. Inside, we have four bedrooms, a living room, kitchen, and a cozy family room where we spend most of our time watching TV, playing board games, or just hanging out together.If you visit, I think the first thing that might surprise you is the way we do mealtimes. We are pretty traditional and make sure to all sit down together for breakfast, lunch, and dinner. Noone is allowed to eat meals separately or take food to their rooms. My mom is an excellent cook, and mealtimes are a huge deal in our household—a time for family bonding over delicious home-cooked foods.For breakfast, we tend to have a hearty meal. Maybe something like parathas with yogurt, pickle, and chai tea. Or dosas with sambhar and coconut chutney. Either way, it's a filling start to fuel us for the day. Lunch is usually a lighter meal of leftovers or a simple vegetable dish with rice or roti. But dinner is when we really go all out! My mom will make an elaborate feast with multiple dishes—vegetable curries, lentil dishes, naan or rice, raita, chutneys, and more. The smells wafting from the kitchen are out of this world!After our massive dinner, we have a bit of a family tradition. We'll watch a Bollywood movie together or one of the latest Indian shows that everyone is talking about. I know you don't understand much Hindi, but I'll be happy to explain the plot and translations. Who knows, maybe you'll become a Bollywood fan by the end of your visit! We snack on snacks and drinks and just veg out together.On the weekend, we often have a larger family gathering with my aunts, uncles, and cousins coming over. That's when thehouse gets really lively and boisterous! We'll play loud music, dance, gorge ourselves on somemouthwatering homemade food, and just catch up on life. My family puts a huge emphasis on these get-togethers to maintain our close bonds.Of course, if you visit during one of our major festivals like Diwali or Holi, that's a whole other level of festivities and fun! You'd get to see us decorate our home with rangoli designs, lights, flowers, etc. We do special pujas to seek blessings, make delicious sweet treats, get decked out in fancy outfits, and celebrate with fireworks and merry-making. It's such a vibrant, colorful experience that you can't find anywhere else.In between meals and family time, we'll find little pockets to share some of our traditions and customs with you. Maybe I can have my mom show you how to drape a saree properly, or we can adorn your hands with beautiful henna designs. If it's around the harvest season, we may even take you to the temple to offer prayers for an abundant crop. These are all small but meaningful pieces of our culture and identity.Aside from experiencing my home life, I'm also hoping to take you out and about in our city so you can get a full picture of how we live here. We can start the morning by joining the streams of people doing exercise or yoga at the local park. Thenwe'll go for a classic South Indian breakfast like idli-sambhar or dosa at one of the legendary cafes in the city.Next, I'll take you on a little walking tour through the bustling markets and bazaars. You'll see a kaleidoscope of bright colors everywhere—from the sari shops to the glistening jewelry to the piles of fresh produce and vibrant flower stalls. The sounds and aromas are equally intense—vendors shouting over the sounds of traffic and music, mixed with the scents of incense, spices, and street food sizzling on carts. It's a total overload of the senses in the best way possible!Speaking of street food, I have to take you to sample some delicious chaat and pani puri from one of the roadside stalls. These tasty snacks are the perfect encapsulation of the flavors and textures of Indian cuisine—sweet, sour, spicy, crunchy, soft and everything in between! Just wait until youbursts those little puris filled with flavorful curry waters in your mouth—culinary heaven!In the afternoon, we can visit some historical and cultural sites to learn about the rich legacy of my city and country. Maybe we'll go to an ancient fort, mosque, or Hindu temple where you can see incredible feats of architecture, vibrant artwork, and learn about important events that shaped our heritage. Or wecan check out a museum showcasing various crafts, textiles, and artifacts reflecting India's diverse traditions.We'll be sure to also hit up a few of the trendier areas with hip cafes, boutiques, and art galleries where you can see a thriving creative counterculture emerging alongside the ancient historical roots. This beautiful juxtaposition of old and new is part of what makes my city so unique and fascinating.As evening falls, I'll take you to one of the coolest spots for watching the sunset. We can perch up on a hilltop, ancient monument, or rooftop restaurant as we watch the brilliant oranges and reds streak across the sky. That vivid golden hour is always such a magical time here!Finally, to end our jam-packed day together, I'll take you to an amazing place for dinner and a show—maybe a traditional dance performance highlighting classical Indian styles like Bharatanatyam or Kathak. As we take in the rhythmic footwork and dazzling costumes, we'll dine on an incredible thali platter with a mind-boggling assortment of curries, dry vegetable dishes, lentils, rice, roti, chutneys and more. I'm getting hungry just thinking about it!So Samantha, what do you say? Will you take me up on this offer to experience a truly authentic slice of life in my home andmy city? I can promise you it will beColorFUL, FlavorFUL, and an incredible glimpse into a culture steeped in rich traditions unlike anything you've experienced before. Plus, it'll be my personal mission to keep you stuffed with delicious food around the clock!Let me know if you can come, and when would be a good time for me to roll out the royal welcome mat. I'll do my best to ensure you have an unforgettable cultural immersion during your visit. Can't wait to hear from you and make this happen!Your friend,[Your Name]篇3An Invitation to My HomeDear Miguel,I hope this letter finds you well back in Madrid after our amazing semester together studying abroad in London. Those few months were some of the best of my life, and I'm so grateful we became such close friends. I have so many wonderful memories of the times we explored the city together, tried newfoods, attended cultural events, and even pulled a fewall-nighters studying for exams in the library.As excited as I was to return home to the United States after being away for several months, it was also quite difficult saying goodbye to you and our incredible group of international friends. This experience really opened my eyes to how enriching it is to connect with people from different cultures and backgrounds.It's something I'll forever cherish.Which brings me to the main reason for my letter - I simply have to invite you to come visit me so we can reunite and create more great memories! My family has been asking about you ever since I returned and enthusiastically gave their blessing for me to extend this invitation. They're very excited at the prospect of hosting you.If you're able to come, I'd love to have you stay for a long weekend, or even better, an entire week if your schedule allows. That would give us plenty of time to squeeze in all the activities and attractions I have in mind for us.To give you a little preview, here's a taste of what your visit might look like:You'd fly into the regional airport, which is about 30 minutes from my hometown. My dad or I could pick you up, unless you prefer a rental car to have your own transportation. Either way works perfectly fine.Once we arrive in my small city, I'll give you a quick driving tour to get oriented. We have a quaint downtown area with local shops, restaurants, cafes, and a nice public green space perfect for an afternoon stroll.The real highlight, though, is my family's home, which is just outside of the main town area. We live on several acres of beautiful countryside property that my parents have worked hard to cultivate into a relaxing oasis.Upon entering through the long driveway lined with maple trees, you'll see our two-story house up ahead, a charming white colonial-style structure with black shutters and a wide front porch. My parents take great pride in maintaining the gardens surrounding the home, full of flower beds, neatly trimmed shrubs, and an area for my mom's impressive vegetable garden.Around the back of the house, we have an in-ground pool and patio area that is absolute perfection for warm summer days. You'll definitely want to take a dip and lounge by the poolsoaking up the sun. We can grill out and enjoy dinner on the patio once the evening cools down.My dad's pride and joy is the detached two-car garage which he utilizes as his own personal workshop and woodshop. He's incredibly handy and creative, constantly working on furniture restoration projects, building crafts, fixing anything that's broken, or tinkering on appliances and other devices. I'm sure he'd be happy to show off his workspace to you.Behind the garage is a large fenced-in area that's home to our family's chickens, ducks, and rabbits. My younger sisters absolutely love caring for and playing with the animals each day. I'll never forget the excitement of first getting them when I was around 10 years old and feeling like a full-on farmer kid. The fresh eggs from our chickens make for delicious breakfasts too.My personal favorite part of our property is the peaceful hiking trail that winds through the woods behind our backyard. The path gently slopes down to a streaming running creek where I've spent countless hours reading, drawing, journaling, or simple listening to the soothing sound of the water rushing over the rocks. It's such a rejuvenating escape from the stresses of everyday life. We'll absolutely have to trek down there during your stay.Within a short driving distance of my home, there are also lots of activities and attractions I'm excited to share with you in the surrounding area. We can go bowling at the local lanes, check out the nearby indoor shopping mall, take a tour of the microbrewery in the next town over, visit a museum or two, hike at the state park with beautiful overlooks and waterfalls, try authentic Mexican food at my favorite restaurant, and so much more.One evening I'd love to take you to the small liberal arts college where my older brother is a student. It has such a charming campus with cool hangout areas for students. Grabbing dinner at one of the campus eateries and experiencing the lively collegiate atmosphere would be really fun.Overall, I truly believe your visit would strike the perfect balance of relaxing at my family's humble home enjoying small-town life, while also getting out to experience lots of activities and attractions. The beauty of the rural setting coupled with quick access to whatever entertainment we crave is truly the best of both worlds.More than anything though, I'm just excited at the prospect of spending quality time together again and introducing you to my wonderful family. They already feel like they know youthrough all the stories I've shared about our European adventures and my descriptions of you as one of the kindest, funniest, most easygoing people I've ever met. I know they'll adore you just as much as I do.My family values creating a welcoming environment for others and showing warm hospitality, especially to guests we care deeply about. You're already like a brother to me, Miguel, and I can't wait to have you join us as an honorary family member during your stay. Hopefully you'll find a second home amidst us!Please let me know if you'd be able to come, and what dates work best for your schedule. I'll be counting down the days until your arrival. This trip will be incredible, I just know it!Your friend,[Your Name]。
存在位置误差时运动多平台时差定位CRLB分析
存在位置误差时运动多平台时差定位CRLB分析骆卉子;曲长文【摘要】存在平台位置测量误差时,已有研究未涉及运动多平台时差(TDOA)连续定位的性能评价.为此,选择克拉美-罗限(CRLB)作为对目标定位性能的评价指标,将不同时刻的运动多平台真实位置向量构成扩维向量后由CRLB定义得出了其通用计算式,并根据运动多平台TDOA连续定位的特点,推导了适合此应用场景的具体计算式.仿真结果表明了所推导的CRLB能有效用于上述场景中的定位性能评价,对近场及远场目标都需要在系统技术指标及定位算法设计等方面考虑平台位置测量误差的影响.%In moving multi-platform time-difference-of-arrival (TDOA) continuous localization,precise platform locations are often not available in practice.The localization performance evaluation for such scene is not researched.Aiming at this,the Cramér-Rao lower bound(CRLB) is chosen as the evaluation index for the target localization.A augmented vector is composed using all true platform positions at different instants and the common calculation formula for the CRLB is got by its definition.According to the characteristics of the moving multi-platform TDOA continuous localization,the specific calculation formula is derived.Simulation results indicate the effectiveness of the derived index for the performance evaluation in the aforementioned scene.The influence of the platform's position error should be considered in system technical index and localization algorithm design for both the near-field target and the far-field target.【期刊名称】《现代防御技术》【年(卷),期】2017(045)002【总页数】5页(P130-133,155)【关键词】多平台;定位;平台位置误差;时差;克拉美-罗限;仿真【作者】骆卉子;曲长文【作者单位】海军航空工程学院电子信息工程系,山东烟台264001;海军航空工程学院电子信息工程系,山东烟台264001【正文语种】中文【中图分类】TN953+.7;TN958.97现代战争中战场电磁环境复杂，分布着各种电磁辐射源，确定它们的位置来获取完整的战场态势对战争胜负至关重要。
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CONSTELLATIONS WE CAN SEE FROM ORWIGSBURG, PENNSYLVANIA
BIG DIPPER AND COMPANIONS
URSA MAJOR INFORMATION
• Ursa Major is the best known of the constellation and it appears in every reference known. • Calisto was changed to a bear because of Zeus's jealousy and transferred her to the sky. This is improbable, as the constellation was already well established before this time. • The drawings all show a bear with a long tail, again not likely correct since bears have no tails. The most likely explanation for the bears and one which I find intriguing is the fact that Native Americans called the constellations the bear, but instead of the tail they depict the bear being chased around the pole by seven braves. • Ursa Minor is a cub of the mother bear, all of this I find fascinating as it is the same story in Asia, could it be that the stories are similar because of common ancestry or contact between the two races?
FOLLOW THE DRINKING GOURD
ORION: THE MIGHTY HUNTER
ORION INFORMATION
• Orion the Giant Hunter or Warrior, he was a giant so tall that he could wade through any sea, His first marriage ended when the boastfulness of his first wife got her banished to the underworld. He was blinded by a jealous father when he fell in love with a Greek princess, but regained his sight when an oracle told him to look into the sun at dawn. When he saw Aurora the goddess of dawn, they fell in love. All was well until Orion was stung by a Scorpion, he fell sick and died. In order to honor him and protect him from his enemy he rises in the east as his enemy, the Scorpion sets in the West. Orion is never seen at the same time as the Scorpion. • Orion was used to predict the seasons, a midnight rising of Orion meant that the grapes were ready to harvest, a morning rising meant that Summer was beginning, and an evening rising that winter is here
THE ORION NEBULA
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INFORMATION ABOUT THE ORION NEBULA
• The Orion Nebula • Orion Nebula •
• Orion is also home to one of the most beautiful objects in the night sky, the Orion Nebula. The third "star" down in Orion's sword is not a star at all, but the Orion nebula. If you get a pair of binoculars and look closely at this "star", you will see not one, but many stars. This is a sight that is easy for anyone to see, even without a telescope. If you have a telescope, you will be able to make out some of the giant cloud of gas that makes up this nebula. This nebula is also one of the very few places in the sky where the Hubble Space Telescope has been able to spot disks of dust around some the the young stars. Stars with these disks may be forming their own solar systems.
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Nonetheless, slaves knew perfectly well freedom lay to the north, and they knew how to locate north. They used the North Star, or as it is more correctly named, Polaris. Polaris lies almost directly north in the sky. Slaves fled using the simple direction "walk towards the North Star." However, unable to plan a route, they risked walking into impassable or dangerous terrain. Members of the Underground Railroad were fully aware of the predicament of fleeing slaves. About 1831 the Railroad began to send travelers into the South to secretly teach slaves specific routes they could navigate using Polaris. By the beginning of the Civil War in 1861, about 500 people a year were traveling in the South teaching routes to slaves, and well established escape routes had been established. Scholars estimate that 60,000 to 100,000 slaves successfully fled to freedom. Polaris became a symbol of freedom to slaves as well as a guide star. As soon as they were old enough to understand, slave children were taught to locate Polaris by using the stars of the Big Dipper. Slaves passed the travel instructions from plantation to plantation by song. Slaves brought from the tribal cultures of Africa the custom of creating songs to transmit factual information. In America slaves turned song into codes that secretly transmitted information they wished to keep from whites. "Follow the Drinking Gourd" is a coded song that gives the route for an escape from Alabama and Mississippi. Of all the routes out of the Deep South, this is the only one for which the details survive. The route instructions were given to slaves by an old man named Peg Leg Joe. Working as an itinerant carpenter, he spent winters in the South, moving from plantation to plantation, teaching slaves this escape route. Unfortunately, we know nothing more about Peg Leg Joe.