The Beginnings of Some Exploratory Environmental Risk Analyses
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英文作文描写方位Title: Navigating Directions: Exploring Cardinal and Intermediate Points。
In the realm of spatial orientation, mastering the language of directions is akin to wielding a compass in the vast expanse of the English language. As we embark on this linguistic journey, we delve into the nuances of cardinal and intermediate points, unraveling their significance in guiding our path through both literal and figurative landscapes.Let us first acquaint ourselves with the cardinal points: north, south, east, and west. These cardinal directions serve as the foundational pillars upon which our understanding of orientation is built. North, the cardinal point often associated with the magnetic pull of theEarth's axis, represents a symbol of guidance and stability. South, its antithesis, embodies notions of warmth and exploration, drawing us towards uncharted territories. East,where the sun rises, symbolizes beginnings and opportunities, while west, where the sun sets, signifies closure and reflection.Beyond the cardinal points lie the intermediate directions, each offering a unique perspective on our spatial surroundings. To the northeast, we find a blend of the guiding principles of both north and east, where ambition meets clarity of purpose. The northwest beckons with promises of adventure and innovation, merging the exploratory spirit of west with the steadfastness of north. In the southeast, the convergence of south and east fosters a sense of renewal and growth, while the southwest embodies resilience and adaptability, drawing strength from the harmonious balance of south and west.In our daily interactions, the language of directions permeates our communication, subtly shaping our perceptions of space and movement. Whether giving or receiving directions, the choice of words carries with it layers of meaning, reflecting cultural nuances and personal interpretations. Consider, for instance, the differencebetween "turn left" and "veer to the west." While both convey the same basic instruction, the latter imbues the act with a sense of orientation, inviting the traveler to align themselves with the cardinal points as they navigate their course.Moreover, the language of directions extends beyond the physical realm, finding resonance in metaphorical landscapes of thought and emotion. Just as we orient ourselves spatially, we also navigate the complexities of relationships and personal growth. In times of uncertainty, we may seek guidance from our internal compass, aligning ourselves with our values and aspirations as we chart a course forward. In this sense, the cardinal and intermediate points serve as symbolic markers, guiding us towards greater self-awareness and fulfillment.As we conclude our exploration of directions in the English language, let us reflect on the profound significance of these seemingly simple words. In their simplicity lies a rich tapestry of meaning, woven from threads of tradition, culture, and human experience.Whether guiding us through physical landscapes or metaphorical terrain, the language of directions remains a timeless beacon, illuminating our path towards understanding and discovery.In embracing the cardinal and intermediate points, we embark on a journey of orientation and exploration, guided by the compass of language and the boundless possibilities it affords. So let us navigate with purpose and intention, embracing the directions that lead us towards new horizons and deeper understanding.。
一位有影响力的中国探险家英语作文A Prominent Chinese ExplorerIntroductionExploration has always been a fascinating endeavor that captures the hearts and minds of many. However, in the realm of exploration, there are only a handful of individuals who have truly left their mark on history. One such individual is a prominent Chinese explorer whose adventurous spirit, determination, and contributions to the field of exploration have made him a household name not only in China but also around the world.Early LifeBorn in a small village in the remote mountains of China, our explorer showed a keen interest in nature and the unknown from a young age. He would often spend hours exploring the forests, rivers, and caves near his home, fueling his curiosity and sense of wonder about the world beyond his village.His parents, who were farmers, encouraged his exploratory spirit and instilled in him the values of hard work, perseverance, and resilience. Despite coming from humble beginnings, ourexplorer dreamt of traveling the world and uncovering its mysteries, much to the amazement of his family and friends.First ExpeditionAt the age of 18, our explorer embarked on his first expedition, a solo journey to the highest peak in the nearby mountains. Armed with only a backpack, a map, and his unwavering determination, he set out on a perilous trek that would test his physical endurance and mental fortitude.During his ascent, our explorer encountered treacherous terrain, extreme weather conditions, and the threat of wild animals. Despite facing numerous challenges along the way, he pressed on, driven by a burning desire to reach the summit and conquer the mountain that had captured his imagination for so long.After days of grueling trekking, our explorer finally reached the peak, where he was greeted by a breathtaking view of the surrounding landscape and a profound sense of accomplishment. It was at that moment that he knew he was destined for greatness and that his passion for exploration would shape the course of his life.Global ExpeditionsOver the years, our explorer embarked on numerous expeditions to some of the most remote and unexplored regions of the world. From the dense jungles of South America to the icy plains of Antarctica, he traversed continents and crossed oceans in search of new frontiers and discoveries.His expeditions were not without challenges, as he often faced dangerous wildlife, harsh climates, and logistical hurdles that tested his resolve to the limit. However, our explorer persevered, relying on his resourcefulness, adaptability, and knowledge of the natural world to overcome the obstacles in his path.During his global expeditions, our explorer made several groundbreaking discoveries that shed light on the Earth's diverse ecosystems, geological formations, and indigenous cultures. His findings were published in scientific journals, presented at international conferences, and widely acclaimed for their significance and impact on the field of exploration.LegacyToday, our explorer is regarded as a pioneer in the field of exploration and a role model for aspiring adventurers around the world. His fearless spirit, insatiable curiosity, and unwavering dedication to the pursuit of knowledge have inspired countlessindividuals to follow in his footsteps and continue pushing the boundaries of human exploration.In recognition of his contributions to the field of exploration, our explorer has received numerous accolades and awards from prestigious organizations, including the National Geographic Society, the Royal Geographical Society, and the Explorers Club. His name has become synonymous with bravery, discovery, and the relentless quest for the unknown.ConclusionIn conclusion, the story of our prominent Chinese explorer is a testament to the power of passion, perseverance, and the human spirit. Through his extraordinary feats of exploration, he has not only expanded our understanding of the world but also inspired generations of explorers to dream big, defy the odds, and leave their own mark on history. As we reflect on his remarkable journey, we are reminded that the spirit of exploration knows no bounds and that with courage and determination, anything is possible.。
The Thrill of ExplorationExploration is something that has been a part of human nature since the beginning of time. Whether it is exploring new lands, discovering new species, or pushing the limits of what is possible, the thrill of exploration is something that has captured the imagination of people for centuries. In this essay, we will explore the various aspects of exploration, including the reasons why people explore, the risks and rewards of exploration, and the impact that exploration has on society.One of the main reasons why people explore is the desire for knowledge. Humans are naturally curious creatures, and we have an innate desire to understand the world around us. From the earliest days of human history, people have been fascinated by the unknown, and have sought to uncover its secrets. Whether it is exploring the depths of the ocean, the vastness of space, or the mysteries of the human mind, the pursuit of knowledge is a fundamental aspect of human nature.Another reason why people explore is the desire for adventure. For many, the thrill of exploring new lands, encountering new cultures, and experiencing new things is what makes life worth living. The sense of excitement and adventure that comes with exploring the unknown is something that cannot be replicated in any other way, and for many, it is the ultimate adrenaline rush.Of course, exploration is not without its risks. Whether it is the dangers of traveling to remote and inhospitable regions, the risk of encountering dangerous animals or hostile tribes, or the possibility of getting lost or stranded, exploration can be a dangerous and unpredictable endeavor. However, for those who are willing to take the risks, the rewards can be immense. The sense of accomplishment that comes with overcoming obstacles and achieving something that few others have is something that cannot be measured in material terms.In addition to the personal rewards of exploration, there are also broader societal benefits. From the earliest days of human history, exploration has been a catalyst for innovation and progress. Whether it is the development of new technologies, the discoveryof new resources, or the expansion of knowledge and understanding, exploration has played a critical role in shaping the course of human history. The exploration of the New World, for example, led to the discovery of new crops and resources that transformed the economy and society of Europe, while the exploration of space has led to countless technological advancements that have improved our daily lives in countless ways.However, exploration is not without its downsides. One of the most significant negative impacts of exploration is the damage it can cause to the environment. Whether it is the destruction of natural habitats, the pollution of the air and water, or the depletion of natural resources, exploration can have a profound impact on the environment. This is especially true in the case of resource exploration, where the pursuit of valuable minerals and other resources can lead to the destruction of entire ecosystems.In conclusion, the thrill of exploration is something that has captured the imagination of people for centuries. Whether it is the desire for knowledge, the thirst for adventure, or the pursuit of progress, exploration has played a critical role in shaping the course of human history. While the risks and rewards of exploration are many, it is clear that the benefits of exploration outweigh the negatives. As we continue to push the boundaries of what is possible, it is important that we do so in a way that is sustainable and responsible, ensuring that future generations can continue to enjoy the thrill of exploration for centuries to come.。
Exploring the Mysteries of Outer Space As humans, we have always been fascinated by the mysteries of outer space. The vast expanse of the universe has always been a source of wonder, and the more we explore, the more we uncover the secrets of the cosmos. From the birth of stars to the existence of black holes, there is so much to discover and learn about the universe. One of the most intriguing aspects of outer space is the possibility of extraterrestrial life. The idea that there may be other intelligent beings out there in the universe has captured the imagination of people for centuries. With the advancements in technology, we are now able to search for signs of life on other planets and moons in our own solar system, as well as beyond. The searchfor extraterrestrial life has been ongoing for decades, with various missions and projects aimed at finding evidence of life beyond Earth. One of the most notable efforts in this regard is the SETI (Search for Extraterrestrial Intelligence) program, which has been scanning the skies for radio signals from other civilizations for over 50 years. While there have been some promising signals detected, none have been confirmed to be of extraterrestrial origin. Another area of focus in the search for extraterrestrial life is the exploration of other planets and moons in our own solar system. Mars, for instance, has long been a target for exploration due to its similarity to Earth in terms of its geology and potential for hosting life. The recent discovery of liquid water on Mars has further fueled the excitement around the possibility of finding life on the red planet. However, the search for extraterrestrial life is not without its challenges. The vast distances between stars and planets make it difficult to detect any signals or signs of life, and the conditions required for life to exist are very specific. Moreover, the possibility of encountering hostile or dangerous alien civilizations cannot be ruled out. Despite these challenges, the search for extraterrestrial life continues to be a major area of interest for scientists and the general public alike. The possibility of finding life beyond Earth would not only expand our understanding of the universe, but also have profound implications for our place in it. Apart from the search for extraterrestrial life, outer space also holds many other mysteries waiting to be uncovered. One of the most fascinating of these is the existence of black holes – regions of space where thegravitational pull is so strong that nothing, not even light, can escape. Black holes are formed when massive stars collapse in on themselves, creating a singularity at their center. While black holes cannot be directly observed, their presence can be inferred from the effects they have on nearby matter. For instance, the gravitational pull of a black hole can cause nearby stars to orbit around it, or even be ripped apart and consumed by it. The study of black holes has opened up new avenues of research into the nature of space and time, and has even led to the discovery of new physical laws. Another area of interest in outer space is the study of dark matter and dark energy. These mysterious substances are believed to make up the majority of the universe, but their exact nature and properties arestill largely unknown. Dark matter is thought to be a type of matter that does not interact with light or other forms of electromagnetic radiation, while dark energy is believed to be a force that is causing the expansion of the universe to accelerate. The study of dark matter and dark energy is crucial to our understanding of the universe and its origins. By studying the effects of these substances on the behavior of galaxies and other celestial objects, scientists hope to gain insights into the fundamental nature of the universe and the forces that govern it. In conclusion, the mysteries of outer space continue to captivate and inspire us, driving us to explore and uncover the secrets of the universe. From the search for extraterrestrial life to the study of black holes and dark matter, there is so much to discover and learn about the cosmos. While the challenges of space exploration are many, the rewards of expanding our knowledge and understanding of the universe are immeasurable.。
英语四级阅读beginning of universe The physiological effects of space travel宇宙航行的生理影响.an unmanned spaceflight无人驾驶的宇宙飞行He presented a new concept of the beginning of the universe.他提出了一种宇宙起源的新概念。
Scientists study the macrocosm,and I would call it the universe.科学家研究宏观世界,我称之为宇宙。
It became the first reusable vehicle in space.它成为第一个能重复使用的宇宙交通工具。
I have mystical visions and cosmic vibrations.我有神秘的幻觉和宇宙的震波。
Many cosmologists hold the theory that our present universe started at a single point in space许多宇宙学家持这种理论,认为我们现在的宇宙从空间的一个单点开始。
The universe is bathed by an isotropic bath of microwave radiation整个宇宙存在着一个各向同性的微波幅射场。
Theories describing the nature of the universe are constantly revised by scientists.描写宇宙本质的各种理论不断为科学家所修正。
It will no longer be mysterious for all of us to feel this microcosm about human brain.人们对人脑这个微观宇宙,不再感到神秘莫测。
21世纪大学英语读写教程第三册第1单元课文讲解21世纪大学英语读写教程第三册第1单元课文讲解导语:你记得第一次恋爱吗? 你让那个人知道你的感受吗? 你从经验中学到了什么,还是只是一个愚蠢的事件?下面是一篇关于这方面的英语课文,欢迎来学习。
How I Got Smart Steve BrodyA common misconception among youngsters attending school is that their teachers were child prodigies. Who else but a bookworm, with none of the normal kid's tendency to play rather than study, would grow up to be a teacher anyway?I've tried desperately to explain to my students that the image they have of me as an enthusiastic devotee of books and homework during my adolescence was a bit out of focus. On the contrary, I hated compulsory education with a passion. I could never quite accept the notion of having to go to school while the fish were biting.But in my sophomore year, something beautiful and exciting happened. Cupid aimed his arrow and struck me right in the heart. All at once, I enjoyed going to school, if only to gaze at the lovely face in English II.My princess sat near the pencil sharpener, and that year I ground up enough pencils to fuel a campfire. Alas, Debbie was far beyond my wildest dreams. We were separated not only by five rows of desks, but by about 50 I.Q. points. She was the top student in English II, the apple of Mrs. Larrivee's eye.Occasionally, Debbie would catch me staring at her, and she would flash a smile that radiated intelligence and quickened my heartbeat. It was a smile that signaled hope and made me temporarily forget the intellectual gulf that separated us.I schemed desperately to bridge that gulf. And one day, as I was passing the supermarket, an idea came to me. A sign in the window announced that the store was offering the first volume of a set of encyclopedias at the special price of 29 cents. The remaining volumes would cost $2.49 each.I purchased Volume I — Aardvark to Asteroid — and began my venture into the world of knowledge. I would henceforth become a seeker of facts. I would become Chief Brain in English II and sweep my princess off her feet with a surge of erudition. I had it all planned.My first opportunity came one day in the cafeteria line. I looked behind me and there she was."Hi," she said.After a pause, I wet my lips and said, "Know where anchovies come from?"She seemed surprised. "No, I don't."I breathed a sigh of relief. "The anchovy lives in salt water and is rarely found in fresh water." I had to talk fast, so that I could get all the facts in before we reached the cash register. "Fishermen catch anchovies in the Mediterranean Sea and along the Atlantic coast near Spain and Portugal.""How fascinating," said Debbie, shaking her head in disbelief. It was obvious that I had made quite an impression.A few days later, during a fire drill, I casually went up to her and asked, "Ever been to the Aleutian Islands?""Never have," she replied."Might be a nice place to visit, but I certainly wouldn't want to live there," I said."Why not?" said Debbie, playing right into my hands."Well, the climate is forbidding. There are no trees on any ofthe 100 or more islands in the group. The ground is rocky and very little plant life can grow on it.""I don't think I'd even care to visit," she said.The fire drill was over and we began to file into the building, so I had to step it up to get the natives in. "The Aleuts are short and sturdy and have dark skin and black hair. They live on fish, and they trap blue foxes and seals for their valuable fur."Debbie's eyes widened in amazement.One day I was browsing through the library. I spotted Debbie sitting at a table, absorbed in a crossword puzzle. She was frowning, apparently stumped on a word. I leaned over and asked if I could help."Four-letter word for Oriental female servant," Debbie said."Try amah," I said, quick as a flash.Debbie filled in the blanks, then turned to stare at me in amazement. "I don't believe it," she said. "I just don't believe it."And so it went, that glorious, joyous, romantic sophomore year. Debbie seemed to relish our little conversations and hung on my every word. Naturally, the more I read, the more my confidence grew.In the classroom, too, I was gradually making my presence felt. One day, during a discussion of Coleridge's "The Ancient Mariner", we came across the word albatross."Can anyone tell us what an albatross is?" asked Mrs. Larrivee.My hand shot up. "The albatross is a large bird that lives mostly in the ocean regions below the equator, but may be found in the north Pacific as well. The albatross measures as long as four feet and has the greatest wingspread of any bird. It feeds on fish and shellfish. The albatross has an enormous appetite, and when it's full it has trouble getting into the air again."There was a long silence in the room. Mrs. Larrivee couldn't quite believe what she had just heard. I sneaked a look at Debbie and gave her a big wink. She beamed proudly and winked back.What I failed to perceive was that Debbie all this while was going steady with a junior from a neighboring school —a basketball player with a C+ average. The revelation hit me hard, and for a while I felt like forgetting everything I had learned. I had saved enough money to buy Volume II —Asthma to Bullfinch — but was strongly tempted to invest in a basketball instead.I felt not only hurt, but betrayed. Like Agamemnon, but with less drastic consequences, thank God.In time I recovered from my wounds. The next year Debbie moved from the neighborhood and transferred to another school. Soon she became no more than a memory.Although the original incentive was gone, I continued poring over the encyclopedias, as well as an increasing number of other books. Having tasted of the wine of knowledge, I could not now alter my course. For:"A little knowledge is a dangerous thing:Drink deep, or taste not the Pierian spring."So wrote Alexander Pope, Volume XIV —Paprika to Pterodactyl.New Wordsprodigyn. a person who has unusual and very noticeable abilities, usually at an early age 奇才;天才child prodigyan unusually clever child 神童bookwormn. a person devoted to reading 极爱读书者;书呆子devoteen. a person strongly devoted to sth. or sb. 热爱…者;献身于…的人adolescencen. 青春期* compulsorya. required by law or a rule 义务的;强制的compelvt. oblige or force (sb.) to do sth. 强迫;强求passionn. a strong, deep, often uncontrollable feeling 热情;激情gazevi. look fixedly 注视;凝视princessn. 1. 理想中的女友;心目中追求的女友2. (oft, cap.) a female member of the royal family, usually the daughter of a king or queen or the wife of a prince [常大写]公主;王妃princen. 1. 少女理想中的未婚者,白马王子2. a male member of the royal family, especially the son of a king or queen 王子;亲王3. (usu. sing.) (among, of) a very great, successful or powerful man of some stated kind [常单数](喻)大王;巨头;名家sharpenern. 卷笔刀;卷笔器campfiren. a wood fire made in the open air by campers 营火,冓火quickenv. (cause to) speed up 加快schemev. make plans (for); plan in a deceitful way 计划;谋划n. 1. a formal, official or business plan 计划;规划2. a clever, dishonest plan 阴谋,诡计volumen. 1. one of a set of books of the same kind (一套书的)一册;一卷2. (of) 体积;容积encyclop(a)edian. a book or set of books dealing with a wide range of information presented in alphabetical order 百科全书aardvarkn. 土豚,非洲食蚁兽asteroidn. 小行星;海星* henceforthad. from this time onwards 自此以后hencead. 1. for this reason, therefore 因此,所以2. from this time on 今后,从此eruditionn. learning acquired by reading and study 博学;学问* cafeterian. a self-service restaurant 自助餐厅anchovyn. 凤尾鱼sighn. the act or sound of sighing 叹息(声);叹气(声)reliefn. feeling of comfort at the end of anxiety, fear, or pain(焦虑等的)解除;宽慰casuallyad. in a relaxed way 随便地;漫不经心地casuala. relaxed; not formal 随便的;漫不经心的;非正式的* sturdya. physically strong 强壮的sealn. 1. 海豹2. 印记,印章vt. 1. 盖章于2. 封,密封widenv. make or become wider 加宽;变宽* browsev. casually look or search, e.g. in a shop, in a library, at a book, etc., with no specific aim or object in mind 浏览crosswordn. (= crossword puzzle) 纵横字谜,纵横填字游戏frownvi. contract the brows, as in displeasure or deep thought 皱眉头* stumpvt. put an unanswerable question to; puzzle 把…难住;使为难* orientala. of, from or concerning Asia 东方的amahn. 阿妈(印度等一些东方国家的奶妈、女佣或保姆)gloriousa. having or deserving glory; very delightful and enjoyable 荣耀的;令人愉快的joyousa. full of or causing joy 充满欢乐的;令人高兴的romantica. 1. (of sth.) beautiful in a way that strongly affects one's feelings 有浪漫色彩的2. (of sb.) showing strong feelings of love 多情的;浪漫的3. being unrealistic or unpractical 不切实际的* relishvt. get pleasure out of; enjoy greatly 从…获得乐趣;很喜爱confidencen. belief in one's own or another's ability 信心marinern. (obsolete) a sailor 〈废〉水手marinea. 1. of ships and their goods and trade at sea 航海的;海事的2. of, near, living in, or obtained from the sea 海洋的.;海生的;海产的n. 水兵albatrossn. 信天翁wingspreadn. the distance between the tips of a pair of fully spread wings 翼幅shellfishn. 贝壳类动物shelln. 1. the hard covering of a sea creature, egg, fruit, seed, etc. 动物的壳(如贝壳、蛹壳等),蛋壳;果壳;荚2. the outside frame of a building (房屋的)框架;骨架appetiten. 1. one's desire to eat and one's feeling about how much to eat 食欲,胃口2. (for) a strong desire 欲望;爱好beamvi. shine brightly; smile warmly 照耀;(面)露喜色;满脸堆笑n. 1. 微笑;喜色2. 光束perceivevt. notice; be conscious of 注意到;感觉;察觉* revelationn. the act of revealing sth., usually of great significance 揭示;暴露asthman. 气喘,哮喘bullfinchn. 红腹灰雀investvi. put money into sth. with the expectation of profit or other advantage 投资investmentn. 1. 投资;投资额2. the spending of (time, energy, etc.) to make sth. successful (时间、精力等的)投入* betrayvt. be disloyal or unfaithful to 出卖,背叛* drastica. strong, violent or severe 激烈的;迅猛的consequencen. (usu. pi.) the result or effect of an action or condition [常复数]结果;后果* incentiven. encouragement to greater activity; motivating factor; stimulus 鼓励;刺激paprikan. 红灯笼辣椒pterodactyln. 翼手龙Phrases and Expressionsout of focusnot sharply defined 焦点没对准;模糊的beyond one's wildest dreams(in a way that is) better than what one expected or hoped for 超过某人所期望的(地);出乎某人意料的(地)the apple of sb.'s eyea person or thing that is the main object of sb.'s love and attention 某人的掌上明珠;宝贝sweep sb. off his/her feetmake sb. feel suddenly and strongly attracted to you in a romantic way 使某人倾心get sth. inmanage to say sth. about a subject 设法说完play into sb.'s handsdo something which gives sb. an advantage 干对某人有利的事file intoenter in a single line 鱼贯进入step up(infml) increase the size or speed of 〈口〉加快;增加hang on sb.'s wordslisten very carefully to 倾听;注意地听feed oneat habitually 以…为食物;靠…为生go steady withdate sb. regularly and exclusively 仅与(同一异性)经常约会invest in1. buy (sth.) with the expectation of profit or some other kind of advantage 投资于2. (infml) 〈口〉买in time1. eventually 经过一段时间后;最终2. at or before the right or necessary time 及时pore overstudy or give close attention to 钻研;专心阅读Proper NamesSteve Brody史蒂文·布罗迪(男子名)Cupid丘比特(罗马神话中的爱神)Debbie黛比(女子名)Larrivee拉里维(姓氏)Spain西班牙(欧洲西南部国家)Portugal葡萄牙(欧洲西南部国家)Aleutian Islands阿留申群岛(美国阿拉斯加州西南部)Aleut阿留申人Coleridge柯尔律治(1772—1834,英国诗人,评论家)"The [Rhyme of the] Ancient Mariner"《古舟子咏》(柯尔律治的著名诗作)Agamemnon阿伽门农(希腊神话中迈锡尼的国王,特洛伊战争中希腊联军统帅,战后回国被妻子及其情夫谋杀)Pierian spring比埃里亚圣泉;知识的源泉。
2019大学英语四级考试阅读笔记(2)Questions 21 to 25 are based on the following passage:21. The passage implies that the telegraph cable was built mainly _________.A) for oceanographic studiesB) for military purposesC) for business considerationsD) for investigating the depths of the oceans22. It was ________ that asked Maury for help in oceanographic studies.A) the American NavyB) some early intercontinental travellersC) those who earned a living from the seaD) the company which proposed to lay an undersea cable23. The aim of voyages Maury encouraged in the 1840s was __________.A) to make some sound experiments in the oceansB) to collect samples of sea plants and animalsC) to estimate the length of cable that was to be madeD) to measure the depths of two oceans24. 'Defied' in the 5th paragraph probably means________A) 'doubted' B) 'gave proof to'C) 'challenged' D) 'agreed to'25. This passage is mainly about _________A) the beginnings of oceanographyB) the laying of the first undersea cableC) the investigation of ocean depthsD) the early intercontinental communicationsQuestions 21 to 25 are based on the following passage:Oceanography has been defined as 'The application of all sciences to the study of the sea'.注:1.Oceanography 由 Ocean (海洋) 和 graphy (学科)组成,意为“海洋学”application 表示“申请”用介词for,表示“应用”用介词to第一句给某个东西下定义,称为篇章定义,必为文章主题Before the nineteenth century, scientists with an interest in the sea were few and far between. Certainly Newton considered some theoretical aspects of it in his writings, but he was reluctant (不愿意) to go to sea to further his work.注:1.第二段:在十九世纪之前,对海洋感兴趣的科学家很少,能够推断本文根据时间顺序来描述海洋学发展的过程further 跟在 to 后面是个动词,表示“推动”For most people the sea was remote, and with theexception of early intercontinental travelers or others who earned a living from the sea, there was little reason to ask many questions about it, let alone to ask what lay beneaththe surface. The first time that the question 'What is at the bottom of the oceans?' had to be answered with any commercial consequence was when the laying of a telegraph cable from Europe to America was proposed. The engineers had to know the depth profile (起伏形状) of the route to estimate the lengthof cable that had to be manufactured.注:1. remote 遥远的and with…多重复合句 intercontinental 洲际的(Inter 在之间,continent 大洲) let alone 更不用说…… first time 由不感兴趣转折到感兴趣,谓语是 was6. 第二句that引导同位语从句,when引导表语从句,整句意思为“当有人基于商业目的建议在美国和欧洲之间铺设电报电缆的时候,人们才提出问题:海底是什么?”7.route 路线 router 路由器It was to Maury of the US Navy that the Atlantic Telegraph Company turned, in 1853, for information on this matter. In the 1840s, Maury had been responsible for encouraging voyages during which soundings (测深) were takento investigate the depths of the North Atlantic and Pacific Oceans. Later, some of his findings aroused much popular interest in his book The Physical Geography of the Sea.注:。
探索宇宙和自然小学英语作文Exploring the Universe and NatureThe universe is a vast and mysterious place.It is filled with stars, planets, and other celestial bodies that have always fascinated humans.Nature, on the other hand, is the beautiful and intricate system that surrounds us.Exploring both the universe and nature can be a fascinating and enlightening experience.When we explore the universe, we are essentially exploring the unknown.Scientists have discovered many things about the universe, but there is still so much that we do not understand.For example, we know that there are millions of stars and planets out there, but we have only explored a small fraction of them.Through the use of telescopes and other space technology, we can observe distant galaxies and learn about the processes that occur in the universe.ature, too, is a vast and complex system.From the smallest insects to the largest trees, everything in nature is interconnected in some way.Exploring nature can help us to understand the world around us and how it works.For example, by studying plants and animals, we can learn about their habitats, behaviors, and the role they play in the ecosystem.This knowledge can help us to protect and preserve the natural world.Exploring the universe and nature can also help us to gain a greaterappreciation for the beauty and wonder of the world.The vastness of the universe and the intricate details of nature can be awe-inspiring.They can also remind us of our place in the world and the importance of taking care of our planet.In conclusion, exploring the universe and nature can be a fascinating and enlightening experience.It can help us to understand the world around us, gain a greater appreciation for its beauty, and learn about the importance of protecting and preserving our planet.So let's embrace the wonder of the universe and the beauty of nature and continue to explore and learn.。
2020年大学英语四级考试阅读主旨题解题技巧(19)Since the beginning of time, man has invented many interesting things. Some of these inventions, like numbers, the alphabet and the radio, have certainly changed history. Since 1946, one of the most important inventions has been the computer. It will change all our lives.At one time it was as large as a room, and quitedifficult and slow to operate. But, since the invention of the silicon ship, which is really a very very small electric circuit, computers have been greatly improved. They have become smaller, easier to use, and faster; they can store a lot more information.Some computer are made as well as television sets. Simple computers can be made smaller than a book. And computers are getting smaller all the time.There are several reasons why the computer is useful to us. Firstly, it can store a very very large quantity of information in its memory. Secondly, the computer can operate very quickly –thousands of times faster than a human—and it will not tire. Thirdly, modern computers can be built into other kinds of machines, like radios, cars, planes and so on. They can do many kinds of work.Soon, almost everyone, either at home or at work, will use some kind of computer. the lives of all of us will be changed by this invention.The main idea of this passage is ____A how the computer came into beingB that computers ate getting smaller and smaller all the timeC that the computer will change the lives of all of usD that modern computers can be built into other machineKey:C。
托福阅读tpo54全套解析阅读-1 (2)原文 (2)译文 (4)题目 (5)答案 (9)背景知识 (10)阅读-2 (10)原文 (10)译文 (12)题目 (13)答案 (18)背景知识 (20)阅读-3 (25)原文 (26)译文 (27)题目 (28)答案 (33)背景知识 (35)阅读-1原文The Commercialization of Lumber①In nineteenth-century America, practically everything that was built involved wood.Pine was especially attractive for building purposes.It is durable and strong, yet soft enough to be easily worked with even the simplest of hand tools.It also floats nicely on water, which allowed it to be transported to distant markets across the nation.The central and northern reaches of the Great Lakes states—Michigan, Wisconsin, and Minnesota—all contained extensive pine forests as well as many large rivers for floating logs into the Great Lakes, from where they were transported nationwide.②By 1860, the settlement of the American West along with timber shortages in the East converged with ever-widening impact on the pine forests of the Great Lakes states. Over the next 30 years, lumbering became a full-fledged enterprise in Michigan, Wisconsin, and Minnesota. Newly formed lumbering corporations bought up huge tracts of pineland and set about systematically cutting the trees. Both the colonists and the later industrialists saw timber as a commodity, but the latter group adopted a far more thorough and calculating approach to removing trees. In this sense, what happened between 1860 and 1890 represented a significant break with the past. No longer were farmers in search of extra income the main source for shingles, firewood, and other wood products. By the 1870s, farmers and city dwellers alike purchased forest products from large manufacturingcompanies located in the Great Lakes states rather than chopping wood themselves or buying it locally.③The commercialization of lumbering was in part the product of technological change. The early, thick saw blades tended to waste a large quantity of wood, with perhaps as much as a third of the log left behind on the floor as sawdust or scrap. In the 1870s, however, the British-invented band saw, with its thinner blade, became standard issue in the Great Lakes states' lumber factories.Meanwhile, the rise of steam-powered mills streamlined production by allowing for the more efficient, centralized, and continuous cutting of lumber. Steam helped to automate a variety of tasks, from cutting to the carrying away of waste. Mills also employed steam to heat log ponds, preventing them from freezing and making possible year-round lumber production.④For industrial lumbering to succeed, a way had to be found to neutralize the effects of the seasons on production. Traditionally, cutting took place in the winter, when snow and ice made it easier to drag logs on sleds or sleighs to the banks of streams. Once the streams and lakes thawed, workers rafted the logs to mills, where they were cut into lumber in the summer. If nature did not cooperate—if the winter proved dry and warm, if the spring thaw was delayed—production would suffer. To counter the effects of climate on lumber production, loggers experimented with a variety of techniques for transporting trees out of the woods. In the 1870s, loggers in the Great Lakes states began sprinkling water on sleigh roads, giving them an artificial ice coating to facilitate travel. The ice reduced the friction and allowed workers to move larger and heavier loads.⑤But all the sprinkling in the world would not save a logger from the threat of a warm winter. Without snow the sleigh roads turned to mud. In the 1870s, a set of snowless winters left lumber companies to ponder ways of liberating themselves from the seasons. Railroads were one possibility.At first, the remoteness of the pine forests discouraged common carriers from laying track.But increasing lumber prices in the late 1870s combined with periodic warm, dry winters compelled loggers to turn to iron rails. By 1887, 89 logging railroads crisscrossed Michigan, transforming logging from a winter activity into a year-round one.⑥Once the logs arrived at a river, the trip downstream to a mill could be a long and tortuous one.Logjams (buildups of logs that prevent logs from moving downstream) were common—at times stretching for 10 miles—and became even more frequent as pressure on the northern Midwest pinelands increased in the 1860s. To help keep the logs moving efficiently, barriers called booms (essentially a chain of floating logs) were constructed to control the direction of the timber. By the 1870s, lumber companies existed in all the major logging areas of the northern Midwest.译文木材的商业化①在19世纪的美国,几乎所有建筑材料都含有木材。
高一科学探索英语阅读理解25题1<背景文章>Space exploration has a long and fascinating history. Since ancient times, humans have looked up at the stars and wondered what lies beyond. In the 20th century, space exploration took a major leap forward with the launch of the first artificial satellite, Sputnik 1, by the Soviet Union in 1957. This event marked the beginning of the space age and sparked a race between the United States and the Soviet Union to explore space.Over the years, many significant events have taken place in space exploration. The Apollo missions to the moon in the 1960s and 1970s were a major milestone, as humans set foot on another celestial body for the first time. These missions not only demonstrated the technological capabilities of the two superpowers but also inspired generations of people to dream about space travel.In recent years, space exploration has continued to advance. Private companies have entered the field, bringing new ideas and technologies. Satellites are being used for a variety of purposes, such as communication, weather forecasting, and scientific research. And plans are underway for future missions to Mars and beyond.Looking ahead, space exploration holds great promise. Scientistsbelieve that further exploration of the solar system and beyond could lead to important discoveries about the origins of life and the nature of the universe. It could also open up new opportunities for human settlement and resource exploitation.However, space exploration also presents many challenges. The harsh environment of space, with its extreme temperatures, radiation, and lack of gravity, poses significant risks to astronauts and spacecraft. And the high cost of space missions requires significant investment and cooperation among countries.Despite these challenges, the pursuit of space exploration continues. As technology advances and our understanding of space grows, we can expect to see even more exciting discoveries and achievements in the years to come.1. The launch of Sputnik 1 was significant because it _____.A. was the first satellite to be launched into spaceB. marked the end of the space ageC. was launched by the United StatesD. was used for communication only答案:A。
The Pros and Cons of Space Exploration Space exploration has been a topic of great interest and debate for many years. While some people believe that it is a necessary and important endeavor for the future of humanity, others argue that it is a waste of resources and money. Inthis essay, I will discuss the pros and cons of space exploration from multiple perspectives, including scientific, economic, and ethical considerations. From a scientific perspective, space exploration has provided us with a wealth of knowledge about the universe and our place in it. Through space missions and telescopic observations, scientists have been able to study distant planets, stars, and galaxies, leading to groundbreaking discoveries about the origins of the universe, the existence of other planets capable of supporting life, and the fundamental laws of physics. This knowledge has not only expanded our understanding of the cosmos but has also led to numerous technological advancements that have benefited society as a whole. In addition to thescientific benefits, space exploration has also had a significant impact on the economy. The development of space technology has led to the creation of new industries, such as satellite communications, GPS technology, and Earthobservation systems, which have generated substantial economic growth and job opportunities. Furthermore, the space industry has the potential to drive innovation in other sectors, such as materials science, robotics, and renewable energy, which could have far-reaching economic benefits for future generations. Despite these advantages, there are also several drawbacks to space exploration. One of the most significant concerns is the high cost associated with space missions. The development and launch of spacecraft, as well as the maintenance of space infrastructure, require substantial financial investment, which could beseen as a misallocation of resources in a world where many people still lack access to basic necessities such as clean water, food, and healthcare. Critics argue that the billions of dollars spent on space exploration could be better utilized to address pressing issues on Earth, such as poverty, climate change, and public health. Furthermore, there are ethical considerations surrounding space exploration, particularly in relation to the potential exploitation of celestial bodies. As technology advances, there is a growing interest in mining asteroidsand extracting resources from other celestial bodies, which raises questions about the ethical implications of commercializing space. Some argue that the pursuit of profit in space could lead to environmental degradation and the exploitation of vulnerable communities, while others believe that it is essential for the long-term sustainability of human civilization. Another concern is the environmental impact of space exploration. The launch and operation of spacecraft can have detrimental effects on the Earth's atmosphere, contributing to air and water pollution, as well as the generation of space debris that poses a threat to existing satellites and future space missions. Additionally, the extraction of resources from other celestial bodies could have unforeseen consequences for the delicate balance of the solar system, potentially disrupting ecosystems andnatural processes that we do not yet fully understand. In conclusion, space exploration is a complex and multifaceted issue that elicits a range of opinions and emotions. While it has undeniably contributed to our scientific knowledge and economic development, it also raises important ethical and environmental concerns that must be carefully considered. As we continue to venture into the cosmos, it is crucial to weigh the benefits and drawbacks of space exploration and strive to find a balance that promotes the advancement of humanity while safeguarding the well-being of our planet and the broader universe.。
ships in the desert课文翻译Unit 3 - Ships In The DesertShips In The DesertI was standing in the sun on the hot steel deck of a fishing ship capable of processing a fifty-ton catch on a good day. But it wasn't a good day.We were anchored in what used to be the most productive fishing site in all of central Asia, but as I looked out over the bow, the prospects of a good catch looked bleak.Where there should have been gentle blue-green waves lapping against the side of the ship, there was nothing but hot dry sand-as far as I could see in all directions.The other ships of the fleet were also at rest in the sand, scattered in the dunes that stretched all the way to the horizon.Ten years ago the Aral was the fourth largest inland sea in the world, comparable to the largest of North America's Great Lakes.Now it is disappearing because the water that used to feed it has been diverted in an ill-considered irrigation scheme to grow cotton in the desert.The new shoreline was almost forty kilometers across, the sand from where the fishing fleet was now permanently docked.Meanwhile, in the nearby town of Muynak the people were still canning fish -brought not from the Aral Sea but shipped by rail through Siberia from the Pacific Ocean, more than a thousand miles away.My search for the underlying causes of the environmental crisis has led me to travel around the world to examine and study many of these images of destruction.At the very bottom of the earth, high in the Trans-Antarctic Mountains, with the sun glaring at midnight through a hole in the sky, I stood in the unbelievable coldness and talked with a scientist in the late fall of 1988 about the tunnel he was digging through time.Slipping his parka back to reveal a badly burned face that was cracked and peeling, he pointed to the annual layers of ice in a core sample dug from the glacier on which we were standing.He moved his finger back in time to the ice of two decades ago. "Here's where the U.S. Congress passed the Clean Air Act," he said.At the bottom of the world, two continents away from Washington, D. C., even a small reduction in one country's emissions had changed the amount of pollution found in the remotest and least accessible place on earth.But the most significant change thus far in the earth's atmosphere is the one that began with the industrial revolution early in the last century and has picked up speed ever since.Industry meant coal, and later oil, and we began to burn lots of it-bringing rising levels of carbon dioxide (CO2), with its ability to trap more heat in the atmosphere and slowly warm the earth.Fewer than a hundred yards from the South Pole, upwind from the ice runway where the ski plane lands and keeps its engines running to prevent the metal parts from freeze-locking together, scientists monitor the air several times every day to chart the course of that inexorable change.During my visit, I watched one scientist draw the results of that day's measurements, pushing the end of a steep line still higher on the graph.He told me how easy it is-there at the end of the earth-to see that this enormous change in the global atmosphere is still picking up speed.Two and a half years later I slept under the midnight sun at the other end of our planet, in a small tent pitched on atwelve-foot-thick slab of ice floating in the frigid Arctic Ocean.After a hearty breakfast, my companions and I traveled by snowmobiles a few miles farther north to a rendezvous point wherethe ice was thinner -only three and a half feet thick-and a nuclear submarine hovered in the water below.After it crashed through the ice, took on its new passengers, and resubmerged, I talked with scientists who were trying to measure more accurately the thickness of the polar ice cap, which many believe is thinning as a result of global warming.I had just negotiated an agreement between ice scientists and the U. S. Navy to secure the release of previously top secret data from submarine sonar tracks, data that could help them learn what is happening to the north polar cap.Now, I wanted to see the pole itself, and some eight hours after we met the submarine, we were crashing through that ice, surfacing, and then I was standing in an eerily beautiful snowscape, windswept and sparkling white, with the horizon defined by little hummocks, or "pressure ridges" of ice that are pushed up like tiny mountain ranges when separate sheets collide.But here too, CO2 levels are rising just as rapidly, and ultimately temperature will rise with them-indeed, global warming is expected to push temperatures up much more rapidly in the polar regions than in the rest of the world.As the polar air warms, the ice here will thin; and since then, polar cap plays such a crucial role in the world's weather system, the consequences of a thinning cap could be disastrous.Considering such scenarios is not a purely speculative exercise.Six months after I returned from the North Pole, a team of scientists reported dramatic changes in the pattern of ice distribution in the Arctic, and a second team reported a still controversial claim (which a variety of data now suggest) that, overall, the north polar cap has thinned by 2 percent in just the last decade.Moreover, scientists established several years ago that in many land areas north of the Arctic Circle, the spring snowmelt now comes earlier every year, and deep in the tundra below, the temperature of the earth is steadily rising.As it happens, some of the most disturbing images of environmental destruction can be found exactly halfway between the North and South poles -precisely at the equator in Brazil-where billowing clouds of smoke regularly blacken the sky above the immense but now threatened Amazon rain forest.Acre by acre, the rain forest is being burned to create fast pasture for fast-food beef; as I learned when I went there in early 1989, the fires are set earlier and earlier in the dry season now,with more than one Tennessee's worth of rain forest being slashed and burned each year.According to our guide, the biologist Tom Lovejoy, there are more different species of birds in each square mile of the Amazon than exist in all of North America-which means we are silencing thousands of songs we have never even heard.But one doesn't have to travel around the world to witness humankind's assault on the earth. Images that signal the distress of our global environment are now commonly seen almost anywhere.On some nights, in high northern latitudes, the sky itself offers another ghostly image that signals the loss of ecological balance now in progress.If the sky is clear after sunset-and if you are watching from a place where pollution hasn't blotted out the night sky altogether-you can sometimes see a strange kind of cloud high in the sky.This "noctilucent cloud" occasionally appears when the earth is first cloaked in the evening darkness; shimmering above us with a translucent whiteness, these clouds seem quite unnatural: And they should:noctilucent clouds have begun to appear more often because of a huge buildup of methane gas in the atmosphere.Also called natural gas, methane is released from landfills, from coal mines and rice paddies, from billions of termites that swarm through the freshly cut forestland, from the burning of biomass and from a variety of other human activities.Even though noctilucent clouds were sometimes seen in the past, all this extra methane carries more water vapor into the upper atmosphere, where it condenses at much higher altitudes to form more clouds that the sun's rays still strike long after sunset has brought the beginning of night to the surface far beneath them.What should we feel toward these ghosts in the sky? Simple wonder or the mix of emotions we feel at the zoo?Perhaps we should feel awe for our own power: just as men tear tusks from elephants' heads in such quantity as to threaten the beast with extinction, we are ripping matter from its place in the earth in such volume as to upset the balance between daylight and darkness.In the process, we are once again adding to the threat of global warming, because methane has been one of the fastest-growing greenhouse gases, and is third only to carbon dioxide and water vapor in total volume, changing the chemistry of the upper atmosphere.But, without even considering that threat, shouldn't it startle us that we have now put these clouds in the evening sky which glisten with a spectral light?Or have our eyes adjusted so completely to the bright lights of civilization that we can't see these clouds for what they are-a physical manifestation of the violent collision between human civilization and the earth?Even though it is sometimes hard to see their meaning, we have by now all witnessed surprising experiences that signal the damage from our assault on the environment-whether it's the new frequency of days when the temperature exceeds 100 degrees, the new speed with which the sun burns our skin, or the new constancy of public debate over what to do with growing mountains of waste.But our response to these signals is puzzling. Why haven't we launched a massive effort to save our environment?To come at the question another way: Why do some images startle us into immediate action and focus our attention on ways to respond effectively?And why do other images, though sometimes equally dramatic, produce instead a kind of paralysis, focusing our attention not on ways to respond but rather on some convenient, less painful distraction?Still, there are so many distressing images of environmental destruction that sometimes it seems impossible to know how to absorb or comprehend them.Before considering the threats themselves, it may be helpful to classify them and thus begin to organize our thoughts and feelings so that we may be able to respond appropriately.A useful system comes from the military, which frequently places a conflict in one of three different categories, according to the theater in which it takes place.There are "local" skirmishes, “regional" battles, and "strategic" conflicts. This third category is reserved for struggles that can threaten a nation's survival and must be understood in a global context.Environmental threats can be considered in the same way. For example, most instances of water pollution, air pollution, and illegal waste dumping are essentially local in nature.Problems like acid rain, the contamination of underground aquifers, and large oil spills are fundamentally regional.In both of these categories, there may be so many similar instances of particular local and regional problems occurring simultaneously all over the world that the pattern appears to be global, but the problems themselves are still not truly strategicbecause the operation of the global environment is not affected and the survival of civilization is not at stake.However, a new class of environmental problems does affect the global ecological system, and these threats are fundamentally strategic.The 600 percent increase in the amount of chlorine in the atmosphere during the last forty years has taken place not just in those countries producing the chlorofluorocarbons responsible but in the air above every country, above Antarctica, above the North Pole and the Pacific Ocean-all the way from the surface of the earth to the top of the sky.参考译文——沙漠中的捕鱼船队沙漠中的捕鱼船队我在阳光中站在一艘渔轮的灼热的钢甲板上。
Exploring the Boundaries of Space The exploration of outer space has always been a subject of fascination and wonder for humanity. The vastness of the universe and the mysteries it holds have captivated the imagination of scientists, researchers, and the general public alike. As we continue to push the boundaries of space exploration, we are faced with a myriad of challenges and opportunities that shape the way we perceive our place in the cosmos. From a scientific perspective, the exploration of space offers a wealth of knowledge and understanding about the origins and nature of the universe. Through space missions, telescopic observations, and research conducted on celestial bodies, scientists have been able to unravel some of the universe's most profound secrets. The study of exoplanets, black holes, and the cosmic microwave background radiation has provided valuable insights into the fundamental laws of physics and the evolution of celestial bodies. Moreover, space exploration has also contributed to technological advancements that havebenefitted society as a whole. The development of satellite technology, for instance, has revolutionized communication, navigation, and weather forecasting. Furthermore, the research conducted in space has led to innovations in materials science, medical technology, and environmental sustainability. The spin-off technologies from space exploration have had a profound impact on various industries and have improved the quality of life for people around the world. On a cultural and societal level, the exploration of space has inspired and unified people across the globe. The iconic "blue marble" image of Earth taken from space has instilled a sense of interconnectedness and environmental awareness. The achievements of space agencies and astronauts have become a source of inspiration for future generations, encouraging them to pursue careers in science, technology, engineering, and mathematics (STEM). Space exploration also serves as a testament to human ingenuity and the relentless pursuit of knowledge, transcending national boundaries and political differences. However, the exploration of space is not without its ethical and practical considerations. The cost of space missions and the allocation of resources for space exploration have been subjects of debate, especially in the face of pressing global issues such as poverty, hunger, and climate change. Critics argue that the vast sums of money invested in spaceexploration could be better utilized to address these urgent challenges on Earth. Additionally, there are ethical concerns surrounding the potential exploitation of extraterrestrial resources and the impact of space activities on celestial bodies and their ecosystems. Furthermore, the physical and psychological toll of space exploration on astronauts has been a topic of concern. Extended periods of time in microgravity can have adverse effects on the human body, such as muscle atrophy, bone density loss, and radiation exposure. The isolation and confinement of space travel also pose significant psychological challenges for astronauts, leading to issues such as depression, anxiety, and interpersonal conflicts. As we venture further into space, it is crucial to prioritize the well-being of those who embark on these missions and develop strategies to mitigate the health risks associated with space travel. In conclusion, the exploration of space presents a complex tapestry of scientific, technological, cultural, and ethical considerations. It offers a gateway to profound knowledge and innovation while raising important questions about our place in the universe and our responsibilities as stewards of Earth and beyond. As we continue to push the boundaries of space exploration, it is imperative to approach these endeavors with a holistic perspective, considering the diverse impacts and implications they entail. Only through thoughtful reflection and collaboration can we navigate the frontiers of space exploration with wisdom and foresight.。
关于宇宙探索的英语短文集The Exploration of the UniverseIntroduction:The exploration of the universe has been one of the most captivating and intriguing subjects in human history. It is a field that encompasses various scientific disciplines and requires a broad range of skills and knowledge. In this collection of English short articles, we will delve into different aspects of the universe, including its origins, celestial bodies, space exploration, and potential for life beyond Earth.Article 1: The Origin of the UniverseThe origin of the universe has been a topic of great debate and speculation for centuries. Scientists propose several theories, including the Big Bang theory, which suggests that the universe began from a singularity and has been expanding ever since. This article will explore the evidence supporting the Big Bang theory and its implications on our understanding of the universe's past and future.Article 2: Celestial BodiesThe universe is teeming with an incredible variety of celestial bodies, ranging from stars and planets to asteroids and comets. This article will provide an overview of some of these fascinating objects, including their characteristics, formation, and importance in the cosmic landscape. Additionally, we will discuss the role of telescopes in studying celestial bodies and expanding our knowledge of the universe.Article 3: Space ExplorationHuman fascination with space has led to remarkable achievements in space exploration. This article will highlight key milestones in space exploration history, from the first manned moon landing to the groundbreaking missions exploring Mars and beyond. We will delve into the challenges faced by astronauts, the technological advancements aiding space exploration, and the potential benefits it holds for humanity.Article 4: The Search for Extraterrestrial LifeAre we alone in the universe? This age-old question continues to captivate the minds of scientists and laypeople alike. In this article, we will explore the possible existence of extraterrestrial life and the methods used to search for it. From the study of extremophiles on Earth to the analysis of exoplanets, we will examine the current scientific endeavors in the quest to find life beyond our planet.Article 5: Cosmic MysteriesThe universe is filled with mysteries that challenge our understanding of physics and nature. This article will discuss intriguing phenomena such as black holes, dark matter, and dark energy. We will explore their definitions, observed effects, and their significance in unlocking the secrets of the cosmos. Additionally, we will touch upon the ongoing research and theories aimed at unraveling these cosmic enigmas.Conclusion:The exploration of the universe is a never-ending journey that continues to inspire and push the boundaries of human knowledge. Through thiscollection of short articles, we have scratched the surface of this vast subject, exploring its origins, celestial bodies, space exploration, the search for extraterrestrial life, and cosmic mysteries. As we continue to delve deeper into the mysteries of the universe, we uncover not only scientific discoveries but also a profound sense of wonder and awe for the vastness and beauty of our cosmic home.。
宇宙起源英文作文1. The universe, a vast expanse of stars, planets, and galaxies, has always fascinated humankind. We have pondered over its origins, wondering how it all began. Some theories suggest that the universe was born from a cosmic explosion, known as the Big Bang. This explosion, billions of years ago, set in motion the creation of everything we see today.2. Another theory proposes that the universe has existed forever, with no starting point or end. According to this idea, the universe is in a constant cycle of expansion and contraction, known as the Big Bounce. It expands, reaches a maximum size, and then collapses in on itself, only to repeat the process again and again.3. Some scientists believe that multiple universes exist, each with its own set of physical laws and properties. These parallel universes may have different origins and may even exist in different dimensions. It is a mind-boggling concept to think about the existence of otheruniverses beyond our own.4. The concept of a higher power or a divine being creating the universe is also deeply ingrained in many cultures and religions. This belief suggests that the universe was intentionally created by a higher intelligence, guiding the formation of galaxies, stars, and planets.5. As our understanding of the universe continues to evolve, new theories and ideas emerge. Scientists are constantly searching for evidence and conductingexperiments to unravel the mysteries of the universe's origins. The quest for knowledge drives us to explore and push the boundaries of what we know.6. The universe's origin is a topic that sparks endless debates and discussions among scientists, philosophers, and ordinary people alike. It is a question that may never have a definitive answer, but the pursuit of understanding our place in the cosmos is a journey worth taking.7. Whether it was a cosmic explosion, an eternal cycle,parallel universes, or the work of a higher power, the origin of the universe remains a captivating and awe-inspiring mystery. It is a reminder of the vastness and complexity of the cosmos, and our small but significant place within it.8. In the grand scheme of things, the origin of the universe is just one piece of the puzzle. There are countless other questions waiting to be answered, waiting to reveal more about the nature of our existence. And so, the exploration continues, fueled by curiosity and the desire to unravel the secrets of the universe.。
Exploring the Wonders of the Ocean ADeep DiveThe ocean is a vast and mysterious place, covering more than 70% of theEarth's surface. It is home to an incredible array of marine life, from tiny plankton to massive whales. The ocean also plays a crucial role in regulating the Earth's climate and providing a source of food and livelihood for millions of people around the world. As we dive deep into the wonders of the ocean, we can explore its beauty, its importance, and the threats it faces. One of the most captivating aspects of the ocean is its sheer beauty. The crystal-clear waters, vibrant coral reefs, and diverse marine life create a mesmerizing underwater world. As a scuba diver, I have had the privilege of witnessing this beauty firsthand. Swimming alongside colorful fish, exploring intricate coral formations, and encountering majestic sea turtles are experiences that have left a lasting impression on me. The ocean's beauty is truly awe-inspiring, and it is a privilege to be able to explore and appreciate it. Beyond its beauty, the ocean also playsa crucial role in sustaining life on Earth. It is a massive carbon sink, absorbing carbon dioxide from the atmosphere and helping to regulate the Earth's climate. The ocean also produces over half of the world's oxygen, thanks to the photosynthetic activities of marine plants and phytoplankton. Additionally, the ocean is a vital source of food for billions of people around the world, providing protein and nutrients that are essential for human health. As we explore the wonders of the ocean, it is important to recognize and appreciate its role in supporting life on Earth. Despite its importance, the ocean is facing a myriad of threats. Climate change, pollution, overfishing, and habitat destruction aretaking a significant toll on marine ecosystems. Coral reefs, often referred to as the "rainforests of the sea," are particularly vulnerable, with widespread bleaching and die-offs occurring due to rising sea temperatures and ocean acidification. Plastic pollution is another major concern, with millions of tonsof plastic waste entering the ocean each year, posing a serious threat to marine life. As we delve into the wonders of the ocean, it is essential to acknowledgethe challenges it faces and work towards finding solutions to protect and preservethis precious resource. In addition to its ecological importance, the ocean also holds a special place in the hearts of many people. For some, it is a source of relaxation and tranquility, with the rhythmic sound of the waves and the vast expanse of the sea providing a sense of peace and calm. For others, the ocean represents a playground for adventure and exploration, offering opportunities for surfing, sailing, and diving. The ocean also holds cultural and spiritual significance for many coastal communities, who rely on it for sustenance and draw inspiration from its beauty. As we explore the wonders of the ocean, it is important to recognize and celebrate the deep connections that people have with the sea. In conclusion, the ocean is a truly remarkable and wondrous place, teeming with life, beauty, and significance. As we dive deep into its mysteries, we are reminded of the importance of preserving and protecting this precious resource for future generations. By appreciating the ocean's beauty, understanding its ecological importance, and acknowledging the threats it faces, we can work towards ensuring that the wonders of the ocean continue to inspire and enrich our lives for years to come.。
**The Aurora of New Beginnings**In the vast expanse of life's journey, there often emerges a breathtaking spectacle – the aurora of new beginnings. This celestial display of hope and possibility illuminates the darkest corners of our souls, inviting us to step forward into uncharted territories.The words of Paulo Coelho resound: "When you want something, all the universe conspires in helping you to achieve it." These words capture the essence of the promise that new beginnings hold.The aurora of new beginnings can manifest in various forms. It might be the decision to pursue a long-held dream, such as enrolling in a creative writing course after years of longing to express oneself through words. The spark of inspiration that leads to this choice is like the first burst of color in the aurora, lighting up the path ahead.A change in circumstances can also trigger this celestial phenomenon. Losing a job, which initially seems like a setback, could be the impetus for starting a business that aligns more closely with one's passions. This unexpected turn of events can be seen as the dawn of a new chapter, filled with potential and opportunities.Personal growth and self-improvement are integral parts of this aurora. Embarking on a fitness journey, learning a new language, or developing emotional intelligence are all steps towards a brighter and more fulfilling future. For example, a person who decides to overcome their fear of public speaking and begins taking classes to improve their skills is embracing a new beginning that can open doors to new social and professional connections.New beginnings often require courage and a leap of faith. Just as one might venture into the unknown under the glow of the aurora, taking that first step into the unfamiliar can be terrifying yet exhilarating. The story of an adventurer leaving the comfort of home to explore the wild, facing countless challenges but emerging stronger and wiser, is a testament to the power of new beginnings.However, the journey of new beginnings is not without its challenges. Doubts, fears, and setbacks may cloud the brilliance of the aurora. But it is during these moments that perseverance and determination become our guiding stars.In conclusion, the aurora of new beginnings is a magical phenomenon.Just as the aurora brings a sense of wonder and hope to the night sky, new beginnings fill our lives with optimism and the potential for transformation. Let us not be afraid to chase after these celestial lights and embrace the beauty and promise they offer.。
The Beginnings of Some Exploratory Environ-mental Risk AnalysesDavid R.BrillingerUniversity of California,Department of Statistics367EvansBerkeley,California,94720-3860,USAbrill@IntroductionThese days there are many demands for risk analyses that is:estimating the probabilities of unpleasant,high implication events.These analyses are useful for:risk management,insurance premium computations,formulating regulations and laws,design of structures,and advancing science and tech-nology generally.Exploratory data analysis(EDA)is a mainstay.This paper presents beginnings of some exploratory environmental risk analyses.Bayes Theorem and box and arrow diagrams are basic to risk analyses. They decompose the problem.EDA helps discover expressions for what goes on in the boxes.In this brief paper we chose to focus on parallel boxplots as an effective tool for starting risk studies.They are especially useful for examining batches of data.Boxplots are displayed in the lefthand panel of Figure1.They are now appearing throughout the literature of ing a boxplot one can quickly pick out:location,spread,skewness,tail length,outliers in a batch of data.Parallel boxplots refers to graphing boxplots against a treatment variable,preparing a boxplot for each batch of items with the same treatment. See Emerson and Strenio(1983)for details concerning boxplots.Four Examples1.Flooding of the AmazonThefirst example concerns the risk offloods on the Amazon River at the city of Manaus.Data for the years1892-2002are employed.Manaus is a city well up the Amazon River in Central Brazil.The data are actually for1618202224262830Monthly maximum height 1903-1992month m o n t h l y m a x i m u m (m )Number displacednumber 100050001000050000Figure 1the Rio Negro,but that river becomes the Amazon not far downstream from Manaus.The Rio Negro’s height has been recorded daily since 1903.A concern is whether the risk of flooding is increasing,see Sternberg (1987).The lefthand panel of Figure 1provides parallel boxplots with the x -variable month.One sees a pronounced annual effect,flooding occurs in June through August.One notes that the outliers are on the low,rather than high,side.A so-called damageability matrix is given in La Rovere and Crespo (2002).It provides estimates of the numbers of persons affected by a flood as a function of the maximum height flood waters reach.Figure 1provides this information.The righthand panel in Figure 1has been set up parallel to the lefthand one so that one can read offthe number of people possibly displaced as the peak gets higher.More detail may be found in Brillinger (2003).2.Wildfires in OregonData are available for the sizes of fires taking place on the Federal Lands in the State of Oregon during the years 1989to 1996,see Brillinger et al.(2003).The concern in that,and later,papers is to estimate the risk of a fire as a function of explanatories such as:location,day of the year and various “fire indices”.Parallel boxplots have been prepared for the fire months.The dependent variable is the square root of the acres burnt,for fires burning50100150200250300Fires sizes by months q r t (a c r e s )56789monthFires sizes by year19891990199119921993199419951996year Figure 2over 200acres.The concern is large fires.The boxplots are provided in the lefthand panel of Figure 2.One sees a definite seasonal effect peaking in August.There are also pronounced outliers.The righthand panel has year as the x -variate.Some unusual years stand out.This display is useful for developing time series models.More detail may be found in the above reference.3.Space debris riskAmong the goals of space debris research is estimating the risk of a piece of space debris hitting things like the International Space Station,satellites,or the space shuttle.The data of this example were provided by NASA.They consist of the radar cross sections (RCS)and the elevations of pieces observed crossing through an observation cell of the Haystack telescope during several time periods.Parallel boxplots were prepared and are in the lefthand panel of Figure 3.The x -axis batches correspond to elevation intervals 300to 400km,400to 500km and so on.There are varying numbers of debris pieces in these intervals.One sees something of an increase in size of the objects as the elevation rises.There are also outliers on the larger side.For interests sake we also present a plot that NASA has found very useful for modelling breakup events and their long-term environmental effects.It is the-2020Radar cross section and elevationR C S (d b )3.54.55.56.57.58.59.510.511.512.5elevation (100km)Figure 3so-called Gabbard diagram.This display plots perigee and apogee altitudes for pieces produced in on-orbit breakups as a function of orbital period.The figures is taken from Portree and Loftus (1999).More detail on such data and the space debris risk problem may be found in Barton et al.(1998).4.The Northridge earthquakeThe Northridge event occurred 17January 1994.It was situated about 30km NW of Los Angeles,California.Its size,as measured by magnitude,was 6.7.There were 57deaths,1500serious injuries,and 12,500structures moderately to severely damaged.The damage cost was estimated as 12.5$US billion.There are 554observations to be used in the analysis.There are a variety of ways to describe and estimate earthquake damage.An old and elementary one,yet an important one,uses the Modified Mercalli Intensity (MMI).One reason for this scale’s importance is that sometimes values may be derived from historic accounts.A second is that it refers to damage directly.MMI values are given by roman numerals I to XII (and sometimes 0referring to nothing felt or noticed.)The scale is ordinal1.52.02.5Distance versus MMIl o g 10(d i s t i a n c e 0123456789Modified Mercalli IntensityFigure 4increasing with growing severity of damage.For example the definition of MMI V III includes:“Damage slight in specially designed structures;consid-erable in ordinary substantial buildings;...”while that of MMI IV includes “Dishes,windows,doors disturbed;walls make creaking sound;...”,Bullen and Bolt (1985).The highest intensity recorded was IX .Figure 4graphs log10of distance,from the epicenter of the event to the location of the damage,against MMI.One sees that the distance is less the greater the MMI.More details of such analyses may be found in Brillinger (2003).DiscussionIn parallel boxplots the batches can contain varying numbers of observations without affecting the interpretability.This is in contrast to the case of scatter plots where regions with many points catch the eye easily.We might have used notched boxplots to indicate uncertainty,see Emerson and Strenio (1983),but the emphasis of this paper is non probability meth-ods.AcknowledgementsThe Manaus data came from H.O’R.Sternberg,of the University of Cali-fornia,Berkeley.The Oregon wildfire data were provided by H.K.Preisler,of the Pacific Southwest Research Station,U.S.Foresty Service.The space debris data were provided by M.Matney,Johnson Space Center,Houston. The Northridge intensity data came from J.Dewey of the United States Geological Survey.The work was supported by the NSF Grant DMS02-03921and US Forest Service Contract02-JV-11272165-020.REFERENCESBarton,D.K.et al.(1998)Final Report of the Haystack Orbital Debris Data Review Panel.Technical Memorandum4809NASA,Johnson Space Center.Brillinger,D.R.(2003).Three environmental probabilistic risk prob-lems,Statistical Science,412-421Brillinger,D.R.,Preisler,H.K.and Benoit,J.W.(2003)Risk assess-ment:a forestfire example.Pp.177-196in Science and Statistics.Lecture Notes in Statistics40,Institute of Mathematical Statistics.Bullen,K.E.and Bolt,B.A.(1985).An Introduction to the Theory of Seismology,Fourth Edition.Cambridge,Cambridge.La Rovere,A.L.N.and Crespo,S.(2002).Relat´o rio Urbano Ambiental Integrado-Informe GEO-Manaus.IBAM/ISER/REDEH,Brazil.Emerson,J.D.and Strenio,J.(1983).Boxplots and batch comparison. Pp.58-96in Understanding Robust and Exploratory Data Analysis.(Eds.D.C.Hoaglin,F.Mosteller and J.W.Tukey).Wiley,New York.Portree,D.S.F.and Loftus,J.P.(1999).Orbital Debris:a Chronology. NASA Report NASA/TP-1999-208856.Johnson Space Center,Houston.Sternberg,H.O’R.(1987).Aggrevation offloods in the Amazon River as a consequence of deforestration?Geografiska Annaler69A,201-219.R´ESUM´EL’analyse des donn´e es est tr`e s important quand on´e tude les risques de l’environnement.Cet article pr´e sent quatre exemples.Chacum des exemples emploie les boxplots.。