Anomalous GPDs in the photon
托福阅读原文TPO31-33
托福阅读TPO31第1篇Speciation in Geographically Isolated PopulationsEvolutionary biologists believe that speciation, the formation of a new species, often begins when some kind of physical barrier arises and divides a population of a single species into separate subpopulations. Physical separation between subpopulations promotes the formation of new species because once the members of one subpopulation can no longer mate with members of another subpopulation, they cannot exchange variant genes that arise in one of the subpopulations. In the absences of gene flow between the subpopulations, genetic differences between the groups begin to accumulate. Eventually the subpopulations become so genetically distinct that they cannot interbreed even if the physical barriers between them were removed. At this point the subpopulations have evolved into distinct species. This route to speciation is known as allopatry (“alio-” means “different”，and “patria” means “homeland”).进化⽣生物学家认为物种形成(也就是新物种的产⽣生)经常是某种物理理障碍(地理理隔离)的出现把⼀一个单⼀一物种群分为隔离的亚种群。
小学下册J卷英语第一单元期中试卷
小学下册英语第一单元期中试卷考试时间：100分钟（总分:140）B卷一、综合题(共计100题共100分)1. 填空题：The ______ (青蛙) croaks by the pond at night.2. 填空题：The __________ (植物园) showcases various species.3. 填空题：A whale is a __________ (大型) marine animal.4. 选择题：What do you call a story that is not true?A. BiographyB. FictionC. Non-fictionD. History答案: B5. 选择题：What do you need to write on a chalkboard?A. MarkerB. ChalkC. PencilD. Pen答案：B6. 选择题：What is the term for a baby pig?A. CalfB. PigletC. KidD. Lamb答案: BThe library is ___ (quiet).8. 听力题：The ____ quacks and likes to swim in the water.9. 填空题：I like to make ______ cards.10. 听力题：In a reaction, the enthalpy change can indicate whether heat is absorbed or _____.11. 选择题：What do we call the study of the relationships between humans and their environment?a. Environmental scienceb. Sociologyc. Geographyd. Anthropology答案:a12. 听力题：I love to ___ in the pool. (swim)13. 听力题：A reaction that absorbs heat is called an ______ reaction.14. 选择题：What do you call a person who plays a musical instrument?A. PainterB. SingerC. MusicianD. Dancer答案:C15. 选择题：What do you call a group of wolves?A. PackB. HerdC. FlockD. Pride答案:A16. 听力题：My aunt enjoys hiking in the ____ (mountains).My cousin visits us every ____.18. 填空题：My sister loves __________ (参观博物馆).19. 选择题：What do we call a large body of freshwater?A. OceanB. RiverC. LakeD. Stream20. 听力题：My brother is a ______. He loves to play guitar.21. 选择题：What is the opposite of "happy"?A. SadB. JoyfulC. ExcitedD. Angry答案: A. Sad22. 填空题：The continent where Egypt is located is ________ (非洲).23. 填空题：My friends are _______ (支持我的).24. 填空题：My grandma has a wealth of __________ (历史) to share.25. 填空题：I like to draw ______ (动物) in my sketchbook. It is so ______ (有趣).26. 听力题：The chemical symbol for niobium is _____.27. 听力题：The state of matter with a definite volume but no definite shape is ______.28. 听力题：The capital city of Haiti is __________.What is the boiling point of water in Celsius?a. 50 degreesb. 75 degreesc. 100 degreesd. 0 degrees答案:c30. 听力题：The girl is very ________.31. 选择题：What is the capital of Brazil?A. Rio de JaneiroB. BrasíliaC. São PauloD. Salvador答案:B32. 填空题：The fish swims gracefully in the ______ (水). It is very ______ (优雅).33. 选择题：What do we call the act of putting two or more numbers together?A. SubtractionB. DivisionC. AdditionD. Multiplication答案: C34. 填空题：I can ______ (感受到) the joy of helping others.35. 选择题：What is the capital of Peru?A. SantiagoB. BogotáC. LimaD. Quito答案:C. Lima36. 听力题：A snake is ______ and slithery.The first electric car was developed in the ______ (19世纪).38. 填空题：A frog can breathe through its ______ (皮肤).39. 选择题：What is the name of the famous detective created by Arthur Conan Doyle?A. Sherlock HolmesB. Hercule PoirotC. Miss MarpleD. Sam Spade答案：A40. 选择题：What is the capital of Tonga?a. Nuku'alofab. Vava'uc. Ha'apaid. 'Eua答案:a41. 听力题：I saw a _______ (butterfly) in the garden.42. 填空题：The structure of a plant is designed to maximize ______ and growth. (植物的结构旨在最大化光合作用和生长。
黑脸琵鹭 英语作文
黑脸琵鹭英语作文The Black-Faced SpoonbillThe black-faced spoonbill is a unique and fascinating bird species that has captured the attention of birdwatchers and conservationists around the world. These elegant wading birds are known for their distinctive black facial masks and long, flat bills that resemble spoons, which they use to filter feed in shallow waters. Native to East Asia, the black-faced spoonbill is a migratory species that breeds in the coastal regions of China, North Korea, and Taiwan, and winters in Taiwan, Hong Kong, and Vietnam.One of the most remarkable features of the black-faced spoonbill is its striking appearance. With their sleek white plumage, long necks, and striking black facial masks, these birds are truly a sight to behold. Their long, flat bills are perfectly adapted for their feeding habits, allowing them to skim the surface of the water and filter out small aquatic creatures such as crustaceans, mollusks, and small fish.Despite their beauty and unique characteristics, the black-faced spoonbill is also a highly endangered species. In the 1980s, it was estimated that there were only around 300 individuals left in the wild,making it one of the rarest bird species in the world. This dramatic decline was primarily due to habitat loss, as coastal wetlands were increasingly being converted for human use, such as agriculture, aquaculture, and urban development.In response to this crisis, conservation efforts have been implemented to protect the black-faced spoonbill and its fragile habitat. One of the most successful initiatives has been the establishment of protected wetland areas, known as spoonbill reserves, where the birds can safely breed and forage without the threat of human disturbance. These reserves, located in countries such as Taiwan, Hong Kong, and Vietnam, have played a crucial role in the recovery of the black-faced spoonbill population.Another important aspect of the conservation efforts for the black-faced spoonbill is the monitoring and research of the species. Scientists and birdwatchers have been closely studying the birds' behavior, migration patterns, and breeding habits, in order to better understand the threats they face and develop more effective conservation strategies. This research has also helped to raise awareness about the plight of the black-faced spoonbill, which has been instrumental in garnering support and funding for conservation initiatives.Despite the challenges faced by the black-faced spoonbill, thespecies has shown remarkable resilience and the ability to recover when given the proper protection and support. In recent years, the population of black-faced spoonbills has steadily increased, with the latest estimates suggesting that there are now over 5,000 individuals in the wild. This is a significant achievement, but the work is far from over, as the species remains vulnerable to a variety of threats, including climate change, pollution, and continued habitat loss.As we look to the future, it is clear that the conservation of the black-faced spoonbill will require a collaborative effort involving governments, non-profit organizations, and local communities. By working together to protect the birds' fragile wetland habitats, monitor their populations, and raise awareness about their plight, we can ensure that these remarkable creatures continue to grace our skies and waterways for generations to come.In conclusion, the black-faced spoonbill is a true symbol of the beauty and fragility of our natural world. Its story is one of resilience, determination, and the power of collective action to protect endangered species. As we continue to face the challenges of environmental degradation and climate change, the black-faced spoonbill serves as a reminder of the importance of preserving and restoring the delicate balance of our ecosystems, for the benefit of all living creatures.。
藏羚羊濒危英语作文
藏羚羊濒危英语作文英文回答：The Tibetan antelope (Pantholops hodgsonii) is acritically endangered species native to the Tibetan Plateau. Its population has declined drastically in recent decades due to poaching for its highly prized wool, known as shahtoosh.Shahtoosh is a fine and luxurious wool obtained fromthe undercoat of the Tibetan antelope. It is prized for its warmth, softness, and rarity. A single shawl made from shahtoosh can fetch up to $10,000 in the international market.Poaching for shahtoosh has led to a catastrophicdecline in the Tibetan antelope population. In the 1980s, there were an estimated 1 million Tibetan antelopes in the wild. However, by the late 1990s, that number had plummeted to just 100,000.In response to the poaching crisis, the Chinese government has implemented strict anti-poaching measures, including increased patrols, confiscations of shahtoosh products, and public awareness campaigns. As a result, the poaching rate has decreased significantly in recent years.Despite these efforts, the Tibetan antelope remains a critically endangered species. Its population is still estimated to be less than 200,000 individuals, and poaching continues to be a major threat.Other threats to the Tibetan antelope include habitat loss and climate change. The Tibetan Plateau is one of the most fragile ecosystems on Earth, and it is being rapidly degraded by human activities such as mining, grazing, and tourism. Climate change is also altering the antelope's habitat, making it less suitable for survival.The Tibetan antelope is an iconic species of the Tibetan Plateau. It is a symbol of the region's unique biodiversity and cultural heritage. The conservation of theTibetan antelope is essential for the survival of thisfragile ecosystem.中文回答：藏羚羊（Pantholops hodgsonii）是一种原产于青藏高原的极度濒危物种。
17 年 1 月 14 日托福考试真题解析
17 年 1 月 14 日托福考试真题解析托福阅读Passage one话题分类:艺术类题目: Naturalism and Nature in Art希暗亚里士多德时期开始崇尚自然主义 ,认为艺术就是生动再现客观事物,但也包括fiction as unicorns.第一个例了: Z(人名)和 J(人名)关于谁在艺术方面更有造诣此拼.Z 画了一串葡萄 .引得鸟儿来啄;但是 J 的画作是 curtain. Z 看到这个 curtain 后让他的对手remove the curtain to show his paint。
但是 curtain 其实是后者画的. 所以 Z 认输.第二个例子，关于画花，进一步说明自然主义。
那个时候开始，一些 flowers 比如tulip 有了代表的意义.但是慢慢有 expressionist 不再忠实于自然主义 .有人认为 photography 不仅仅是 camera 決定 , 更是人的选择.达芬奇也认为 observation 带来的仅仅是likeness. copy 就是 mirror, 前应该更多渉及 intelligent activity 和inner life, including energy and strength. Georgia 在画 canna lily 的时候也更注重表现其 essence, 而不是 image.词汇题1.faithfully=accurately2.admiration for=high opinion of3.perceived=seen4.fragile=delicatePassage two话题分类:农业类題目: Cotton Ginning and Interchangeable Parts:The legacy of Eli Whitney第一段: cotton 在 6000 年前首次被种 .后来传到世界各地第二段 : 棉花和籽的分离称作 ginning. Egyptian cotton: longest fiber American South 沿海: Longer-staple American South 中部: Shorter-stapIeshorter-staple 这个类型棉花和籽的分离费时费力,以前是由 slaves 来做.第三段: Eli Whitley 发明了 cotton ginning, 大大提高了效率. (他有两个发明,一是cotton gin,二是促进 mass production 的 interchangeable parts) 他于耶鲁毕业后 ,去 Georgia seek fortune on plantation. He was introduced to invent cotton gin. (这段还详解了 cotton gin 是如何工作的 ,略. )然后一天可以获得 50 pounds of dean cotton, 大大提高效率.第四段: 但是他的发明 is simple and easy to copy,所以他没有因此赚到很钱. 后来他 manufacture and install the gins,但是 the plant was resent by planters. 第五段:后来由于他的 social and political connection,得到 deliver 10000 musket 的机会.然后发明了 interchangeable parts, 也就是一个人负则一个零部件 ,这些零部件 is interchangeable and can be assembled,提高工作效率. 这成词汇題 :1.Garment=xxx of clothing2.thus=in this way3.install 二 put in place4.promoting=developingPassage three话题分类:自然科学类題目: Climate in Triassic and Jurassic第一段: Late Triassic and early Jurassic 的气候特征: warm, aridity,四季分明.第二段 : 3 broad climate regimes 是基于一些 rocks 去判断. 第三段:还有另外三个 climate indicators 掲示了当时的气候:a.red beds, rocks with iron oxide,意味着 warm climate;b.fossilized soils with caliche,这种土壤存在于 arid 的地方;c.high isotopes. variables that do not instantaneously decay 掲示了季节变化.第四段: Late Jurassic 气候开始发生变化.第五段: Middle and Late Jurassic 时期 , ocean basin 的 water 还有特定的鱼类揭示了那时海平面很高,而且内陆海很多. 北极是没有 ice and glaciers 的,意味着那时候温度很高.词汇题 :1.obtained=gathered2.are preserved=are buried3.a wealth of data=a1otof information4.encompass=include托福听力Conversation1话題分类: student and housing employee内容回忆:学生去找管理 Housing 的职员要换一件宿舍.学生现在住的single-room 因为能有课和工作. 但是遇到问题是旁边宿合太吵了影响了他的作息.想要换一问离他们远点的单人宿舍, 但是 employee 说发过邮件告知不能在暑假换 ,但是学生没收到.最终housing employee 还是给出了一些帮助, 说是换一个 double room 或者 out of campus.但是学生部提出了质疑和自己的顾虑.因为没有单问了,最后 cheap price 学生决定去 double room.Convemtion2话题分类: student and astronomy professor内容回忆: professor 一开始就在说学生的问題 ,没有理解一些课堂的知识点关于galaxy 的. Professor 强调是有 2 个 galaxy 类型 , 一个是minor 包括 a large one&a small one, small one 是一个部分;major one 是 same size 的几个. 之后学生问到关子 midterm d 考題是什么样的, professor 说会找一些particular subjects of ongoing research.学生表示自己可能需要 cancel time of laboratory.Lecture 1学科分类: Earth science标題 : the problems and solutions of flotsam science内容回忆：先提出 flotsam science 理论，professor 介绍了一些 ships 停留在海上,被冲定了.科学事通讨 tracing the movement of the ships 掌握了 oceancurrents 的一些规律. 先提到第一个问題.有一种 device 可以去採测, 理因为距离海画的深浅问題不行 .举例了 cargo ship in pacific ship.还提到了organism thrive in upper portion of the ocean.第二个问題是 battery.电池很难開长时间.后面讲到一些关于 glacier melt 时候用到的 device disappear 了. 最后有人提出a new way 用 yellow ducks 可以来 prevent cold and pressure.并且 more durable and inexpensive.Lecture 2学科分类: Music history标題: dissonance内容回忆: 讲到 2 个概念 Artusi &l Me…_ ,第二种形式的 imperfection 体现了dissonance. 解释了下 dissonance 的含义是 Not harmonious in the composition.并且提到里面有很多需要遵循的 rules 和内部的 interact.有学生提问 , professor 提到这种 dissonance is not pleasing and hurt ears. 后面提到关于第二种音乐形式的加点 practice: one practice is to follow the rules.two is for champing,final is the tie of rules.后面提到 views of history 通过一些方式去 substantialize the views.Lecture 3学科分类: Archaeology标題 : Temple and museum内容回忆：先提到Greek 的一种特殊的temple,介绍了一些历史destroyed in the fire and then rebuild. 还有一些特殊的意义.后面讲到了 museums.说是一种cultural institutions,可以用来 exhibit and tell people the history about people who made itLecture 4学科分类: Forestry标題: commercial forestry内容回忆: 引入概念 commercial forestry. 提到 post-harvest residues. 围绕soil，decomposition 来讲. 提到营养需求一 nitrogen.后面举例 fungi.它的decomposition 给 soil 帶来的养分好处等.后面提到一种 new way 提到一个新概念mulch 用这个来加速 decomposition 的。
南极新物种作文英文摘抄
南极新物种作文英文摘抄英文：Recently, I came across some fascinating news about the discovery of a new species in the Antarctic. This new species is a type of small crustacean that has never been seen before. Scientists believe that it may have evolved in response to the changing climate in the region. It's amazing to think that even in such a harsh environment, new life forms are still being discovered.I remember reading about how the scientists came across this new species. They were conducting a routine survey of the area when they noticed something unusual in one oftheir samples. Upon closer inspection, they realized that they had stumbled upon a completely new species. It just goes to show that there is still so much we don't know about the world around us.It's also interesting to think about the implicationsof this discovery. Finding a new species in the Antarctic could provide valuable insight into how organisms adapt to extreme conditions. This could have important implications for our understanding of climate change and its impact on ecosystems around the world.I can't help but feel a sense of wonder and excitement about this discovery. It's a reminder that there is still so much left to explore and learn about our planet. Who knows what other surprises are waiting to be uncovered in the uncharted territories of the Antarctic?中文：最近，我偶然发现了一则关于南极发现新物种的新闻，这个新物种是一种以前从未见过的小型甲壳动物。
濒危动物穿山甲英语作文
濒危动物穿山甲英语作文Pangolins, the Endangered Anteaters.Pangolins, often referred to as scaly anteaters, are unique and fascinating creatures that face imminent danger of extinction. With their distinctive appearance and specialized feeding habits, pangolins hold a vital place in the intricate web of life. However, due to rampant poaching for their scales, meat, and traditional medicine, their populations have dwindled alarmingly. This essay aims to shed light on the plight of pangolins, their ecological significance, and the urgent need for conservation efforts to ensure their survival.Pangolins are solitary, nocturnal mammals belonging to the order Pholidota. They are characterized by their armor-like scales, which cover their entire bodies except for their bellies. These scales, composed of keratin, the same material that makes up human hair and nails, provide pangolins with effective protection against predators.Pangolins are also distinctive for their long, prehensile tails and elongated snouts, both of which are well-adapted for their insectivorous diet.Ecological Significance.Pangolins play a significant role in maintaining ecosystem health. As insectivores, they consume vast quantities of ants and termites, helping to control their populations. This, in turn, benefits other animals that depend on these insects for food or compete with them for resources. Additionally, pangolins' burrowing activities aerate the soil, improving soil quality and facilitating water infiltration.Threats to Pangolins.Pangolins are primarily threatened by poaching. Their scales are highly valued in traditional medicine, particularly in East Asia, where they are believed to have medicinal properties. The demand for pangolin scales has driven a thriving illegal trade, fueled by organized crimesyndicates. Additionally, pangolin meat is considered a delicacy in some regions, further exacerbating their decline.Conservation Efforts.To address the urgent threat facing pangolins, conservation efforts are crucial. These include:Enforcing strict anti-poaching laws and imposing heavy penalties for wildlife trafficking.Raising awareness about the plight of pangolins and the importance of their conservation.Reducing demand for pangolin products by promoting sustainable alternatives.Establishing protected areas and implementing sustainable land management practices to provide habitat and food for pangolins.Supporting research and monitoring programs to better understand pangolin ecology and develop effective conservation strategies.Conclusion.Pangolins, the enigmatic scaly anteaters, are facing a dire threat to their survival. As essential members of terrestrial ecosystems, their loss would have far-reaching consequences for biodiversity and ecosystem functioning. It is imperative that we take immediate action to protect these fascinating creatures and ensure their continued existence for generations to come.中文回答：穿山甲，濒危的食蚁动物。
宇宙生命缉毒照片作文英语
宇宙生命缉毒照片作文英语Title: Unraveling the Cosmic Drug Enforcement Photograph: Exploring the Implications。
In the vast expanse of the universe, mysteries abound, and sometimes, we encounter enigmatic images that provoke more questions than answers. One such image that has captivated the minds of many is the alleged "cosmic drug enforcement photograph." This image purportedly depicts a scenario where extraterrestrial entities are engaged in some form of drug interdiction operation. While the authenticity of such an image remains highly debatable, its implications, if real, are profound and merit careful consideration.At the outset, it's crucial to acknowledge the speculative nature of interpreting such an image. Without concrete evidence or reliable sources, it's challenging to ascertain its veracity. However, for the sake ofintellectual exploration, let's delve into the hypotheticalscenario depicted in the image.Assuming the image indeed captures a moment of cosmic drug enforcement, several questions arise. Firstly, what form do these "drugs" take in the context of the universe? Given the vast diversity of planetary environments and life forms, substances that induce altered states of consciousness or physiological effects could vary significantly from what we understand on Earth. The discovery of such substances could revolutionize our understanding of pharmacology and biochemistry.Secondly, who are the enforcers in this scenario, and who are they targeting? If intelligent life exists elsewhere in the universe, it's plausible that they have developed their own systems of law enforcement to maintain order and combat illicit activities. The presence of drug enforcement suggests a parallel to human societal structures, indicating shared concerns about substance abuse and its societal impact. Understanding the motivations and methodologies of these extraterrestrial enforcers could provide invaluable insights into thecomplexities of interspecies relations.Furthermore, the existence of cosmic drug enforcement raises questions about the prevalence of substance abuse across the universe. Are psychoactive substances a universal temptation, or are they unique to certain civilizations? Exploring the cultural, biological, and environmental factors that contribute to substance use in different galactic communities could shed light on the underlying drivers of addiction and inform more effective prevention and treatment strategies.Moreover, the implications of the cosmic drug enforcement photograph extend beyond the realm of science and into the realm of philosophy and ethics. The discovery of intelligent life engaged in activities analogous to our own raises existential questions about the nature of morality and the universality of ethical principles. Are there inherent moral laws that govern all intelligent beings, or are ethical standards culturally contingent? Wrestling with these questions challenges us to confront our assumptions about the nature of right and wrong andencourages a more nuanced understanding of ethics in a cosmic context.In addition to its philosophical implications, the cosmic drug enforcement photograph prompts reflection on humanity's place in the universe. If intelligent lifeexists elsewhere, what does that mean for our own significance? The realization that we are but one civilization among potentially countless others humbles us and invites us to adopt a more cosmopolitan perspective, emphasizing cooperation and mutual respect across planetary boundaries.In conclusion, while the cosmic drug enforcement photograph remains shrouded in uncertainty, its hypothetical implications spark profound contemplation about the nature of the universe and our place within it. Whether real or imagined, images like these serve as catalysts for exploration, inspiring us to probe the mysteries of existence with curiosity and humility. As we continue to gaze into the cosmic abyss, may we approach each enigma with open minds and unyielding curiosity,knowing that the quest for knowledge is a journey without end.。
动物界里的惊奇事英语作文
动物界里的惊奇事英语作文In the vast and intricate web of the animal kingdom,there exist countless marvels that continue to amaze and inspire humanity. From the tiniest insects to the largest mammals, the natural world is replete with wonders that often leave us in awe of their capabilities and adaptability. This essay will explore some of the most astonishing phenomena observed within the animal realm, highlighting the uniquetraits and behaviors that make each species truly exceptional.One of the most fascinating aspects of the animal kingdom is the extraordinary process of metamorphosis, which is most commonly associated with butterflies but can also be found in other insects such as beetles and moths. The journey from a larva to a fully formed adult involves a complex series of physiological changes, including the shedding of the exoskeleton and the development of new structures like wings.This transformation is not only remarkable in its own right but also serves as a testament to the incredible resilience and adaptability of life forms.Another area of astonishment is the diverse range of communication methods employed by animals. While humans rely heavily on verbal language, animals have developed an array of mechanisms to convey information to one another. For instance, honeybees perform intricate dances to inform their hivemates about the location of food sources, while elephants use a variety of vocalizations, body movements, and even infrasound to communicate over long distances. The complexity and sophistication of these systems demonstrate the intelligence and social structure present in many animal societies.The concept of migration is yet another facet of animal life that never ceases to impress. Many species undertake arduous journeys across continents and oceans, navigating byinstinct and environmental cues to reach their destinations. The monarch butterfly, for example, travels thousands of miles each year from North America to Mexico, relying on a combination of solar orientation, magnetic fields, and wind currents to guide its way. Similarly, the Arctic tern makes an annual round trip between the Arctic and the Antarctic, covering a staggering distance of up to 30,000 miles. Such feats of endurance and navigational prowess are nothing short of extraordinary.The ability to adapt to extreme environments is also a testament to the resilience of animals. Some creatures have evolved to thrive in conditions that would be lethal to most others. For example, the extremophile microbes found in thermal vents at the bottom of the ocean can survive in temperatures up to 400 degrees Celsius, while the camel has adapted to live in the harsh desert environment through specialized water storage and heat regulation mechanisms. These adaptations not only allow these animals to survive butalso provide valuable insights into the potential for life to exist in other hostile environments, such as those on other planets.The phenomenon of mimicry in the animal kingdom isanother source of fascination. Some species have evolved to resemble dangerous or unpalatable organisms as a means of deterring predators. The walking stick insect, for instance, closely matches the appearance of twigs and branches, makingit difficult for predators to spot against the forest backdrop. Similarly, the blue morpho butterfly has wings that resemble the coloration of the sky, allowing it to blend in and avoid detection. These examples demonstrate the intricate ways in which animals have adapted to increase their chancesof survival.The study of animal behavior has also revealed numerous instances of altruism and cooperation among different species. One notable example is the relationship between clownfish andsea anemones. The clownfish provides the anemone with food scraps and protection from predators, while the anemoneoffers the fish a safe haven from which it can hunt for food. This mutualistic relationship benefits both parties and showcases how cooperation can lead to successful coexistence.The animal kingdom also boasts some of the most impressive feats of strength and speed. The cheetah, for instance, can accelerate from 0 to 60 miles per hour in just three seconds, making it the fastest land animal on Earth. Meanwhile, the dung beetle can lift up to 1,141 times its own body weight, a feat that far surpasses the capabilities of any human athlete. These displays of physical prowess are a testament to the diverse adaptations that have evolved in response to the challenges faced by each species.Finally, the concept of echolocation in bats and dolphins is a prime example of how animals have developed sophisticated sensory systems to navigate their environments.By emitting high-frequency sounds and interpreting the echoes that bounce back, these creatures can detect objects and prey with incredible accuracy. This ability not only allows them to hunt effectively but also provides a fascinating glimpse into the alternative ways in which life has evolved to sense and interact with the world.In conclusion, the animal kingdom is a treasure trove of wonders, each more astonishing than the last. From the intricate dance of metamorphosis to the epic journeys of migration, from the remarkable adaptations to extreme environments to the complexities of animal communication, every facet of life in the natural world is a testament to the diversity and resilience of living things. As we continue to explore and learn from these marvels, we gain not only scientific knowledge but also a deeper appreciation for the beauty and complexity of our planet's rich tapestry of life.。
昆虫备忘记写蝴蝶的英语作文
昆虫备忘记写蝴蝶的英语作文英文回答：Butterflies are fascinating insects that undergo a remarkable transformation from egg to adult. They are known for their delicate wings, which are often adorned with vibrant colors and intricate patterns. Butterflies play an important role in the ecosystem as pollinators, helping to ensure the reproduction of plants.Stages of a Butterfly's Life:Egg: Butterflies lay tiny eggs on the leaves of plants.Larva (Caterpillar): The egg hatches into a larva, commonly known as a caterpillar. Caterpillars feed voraciously on leaves, growing and molting several times.Pupa (Chrysalis): When the caterpillar is fully grown, it attaches itself to a surface and forms a pupa. Insidethe pupa, the caterpillar undergoes a remarkable metamorphosis, transforming into an adult butterfly.Adult: The adult butterfly emerges from the pupa with fully developed wings. It feeds on nectar from flowers and mates to produce eggs, completing the life cycle.Anatomy of a Butterfly:Wings: Butterflies have four wings, which are covered in tiny scales that give them their vibrant colors.Antennae: Butterflies use their long antennae to sense their surroundings and communicate with other butterflies.Proboscis: Butterflies have a long, straw-like proboscis that they use to suck nectar from flowers.Thorax: The thorax is the middle section of the butterfly's body and contains the wings and legs.Abdomen: The abdomen is the rear section of thebutterfly's body and contains the digestive and reproductive organs.Diversity of Butterflies:There are over 18,000 known species of butterflies, each with its own unique appearance and behavior. Some common butterfly families include:Swallowtails: Swallowtails have long, narrow wings with a distinctive "tail" at the end.Monarchs: Monarchs are known for their bright orange and black wings and their annual migration.Blues: Blues are small butterflies with vibrant blue wings.Skippers: Skippers have stout bodies and rapid, erratic flight patterns.Nymphalids: Nymphalids are a diverse family ofbutterflies with a wide range of wing patterns and colors.Importance of Butterflies:Butterflies play a crucial role in the ecosystem:Pollination: Butterflies are important pollinators, helping to transfer pollen between flowers.Food source: Butterflies are a food source for birds, bats, and other animals.Aesthetic value: Butterflies are admired for their beauty and delicate nature.Conservation of Butterflies:Butterflies face a number of threats, including habitat loss, climate change, and pesticide use. Conservation efforts are important to protect these valuable insects:Habitat protection: Preserving butterfly habitats,such as meadows and grasslands, is essential.Responsible pesticide use: Pesticides can harm butterflies and their food sources. It is important to use pesticides responsibly and follow label instructions.Butterfly gardens: Creating butterfly gardens with nectar-rich flowers can attract and support butterflies.中文回答：蝴蝶。
墨虾图的英语作文
The Enchantment of Ink Shrimp PaintingsInk shrimp paintings, a unique art form in Chinese culture, have captivated art lovers for centuries. These paintings, often executed with masterful strokes and subtle shading, depict shrimp-like creatures swimming gracefully through a transparent world of ink and water. The artistry lies in the artist's ability to convey the essence of these creatures' movements and textures using only black ink, a testament to the depth and complexity of Chinesetraditional painting.The ink shrimp paintings are not just representations of nature; they are meditations on life and its nuances. The虾, or shrimp, in Chinese culture often symbolizes flexibility and adaptability, qualities that are highly valued in both human and artistic endeavors. By painting these creatures, artists are not just capturing their physical forms but also their spiritual essence, reflecting a deep understanding of the natural world and a profound respect for life.The technique behind ink shrimp paintings is as fascinating as the subject matter itself. Artists use avariety of strokes and shading techniques to create the illusion of depth and texture, making the creatures appear as if they are swimming freely in a three-dimensional space. The use of ink is particularly noteworthy, as it must be applied with precision and control to achieve the desired effect. This demands not only skill but also a deep understanding of the medium and its capabilities.The allure of ink shrimp paintings lies in theirability to evoke a sense of wonder and amazement. Viewers are transported to a different world, one that is both familiar and mysterious, through the artist's vision and craftsmanship. These paintings are not just visual treats; they are also profound meditations on life, nature, and the human condition.The art of ink shrimp paintings is a testament to the richness and diversity of Chinese culture. It is a form of expression that combines the observer's imagination withthe artist's vision, creating a shared experience that is both personal and universal. As we gaze at these paintings, we are reminded of the beauty and complexity of the naturalworld, as well as the limitless possibilities of human creativity.**墨虾图的魅力**墨虾图，这一中国文化中独特的艺术形式，几个世纪以来一直令艺术爱好者着迷。
描写小丑鱼和海葵英语作文
小丑鱼与海葵的共生之舞In the vast and enchanting underwater world, the relationship between clownfish and sea anemones is as unique as it is fascinating. These two creatures, despite their differences in appearance and nature, have evolved a remarkable symbiosis that benefits them both.The clownfish, with its bright and vibrant stripes, is a small but bold fish that thrives in reefs and coral gardens. Its vibrant colors not only serve as a beacon to other fish but also act as a deterrent to predators. However, even the brightest of colors cannot ward off all dangers, and this is where the sea anemone comes into the picture.The sea anemone, with its delicate tentacles and venomous sting, is a formidable predator in its own right. It捕猎preys on small invertebrates and fish, using its powerful venom to paralyze and kill its victims. However, despite its lethal nature, the sea anemone has a surprising ally - the clownfish.The clownfish has developed a resistance to the sea anemone's venom, allowing it to safely reside within the anemone's protective tentacles. In return, the on clownfish provides the anemone with protection from larger predators that might prey it. This symbiotic relationship is beneficial for both parties - the clownfish gains safety and protection, while the sea anemone enjoys a constant supply of food scraps and waste from the clownfish.The dance of life between these two creatures is not just a matter of survival; it's an elegant display of cooperation and mutual respect. The clownfish's boldness and the sea anemone's delicacy complement each other, creating a harmonious existence that is a testament to the wonders of nature.As we delve into the depths of the ocean, we are reminded of the intricate and beautiful relationships that exist between its inhabitants. The symbiosis between the clownfish and the sea anemone is just one example of the countless ways in which nature has found to balance and sustain itself. In a world that is increasingly complex and interconnected, it's these simple yet profound examples ofcooperation and mutual benefit that remind us of the fundamental principles of symbiosis - a beautiful dancethat continues to unfold beneath the waves.**小丑鱼与海葵的共生之舞**在广阔迷人的水下世界中，小丑鱼与海葵之间的关系既独特又迷人。
Part Ⅴ Writing——关于潜水经历的日记
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3.However，some creatures were so dangerous __th_a_t_I_w__a_sn_’_t_p_e_r_m_i_tt_e_d_t_o_g_e_t_t_o_o_c_l_o_se__to_ them such as sharks. 不过，还有一些生物太危险，我是不被允许靠近的，比如鲨鱼。
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2.日记的时态 由于日记是对当天所发生事情的回顾，故常用一般过去时。发表议论或感想时， 也可使用现在完成时或一般将来时。
3.日记的人称 因为日记是记载自己的亲身经历，故应用第一人称，语言尽量口语化，按照事情 发生的先后顺序，清楚、准确、连贯地把事情表达出来。
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4.日记的篇章结构 首先要对所发生的事件或现象进行描述。按照事件发展的先后顺序进行，适当添 加对天气或景物或心情的描述。其次要发表感想或议论，针对事件进行感悟或议 论性的描述，以使文章有所立意。最后要对未来提出展望或推测，或表示决心、 态度、观点、意图、希冀等。
most was the fantastic corals which were shaped like fans，plates，mushrooms，the
branches of trees and the horns of deer.And all kinds of small and elegant fish were
日记是以记叙一天生活中的所见、所闻、所做或所想为内容的一种文体。在日 记中，人们会对事件发表议论，阐述一下自己的态度或体会。日记中所记录的事情 可以是自己的直接经历也可以是描述他人的事情。
草地上有不寻常的东西用英文写篇作文
草地上有不寻常的东西用英文写篇作文Title: Unusual Objects on the GrassOne sunny day, as I was walking through the park, I noticed something peculiar on the grass. It was a shiny metal object, glinting in the sunlight. Curious, I walked closer and realized it was a small, intricate sculpture of a butterfly. I wondered how it got there and who the artist was.As I continued my stroll, I came across more unusual objects scattered on the grass. There was a tiny glass bottle with a message inside, a colorful kite stuck in a tree, and ahand-painted rock with a motivational quote. It seemed like a treasure hunt of hidden gems waiting to be discovered.I couldn't help but feel a sense of wonder and excitement as I explored each unique object. Each item had a story to tell, a mystery waiting to be unraveled. I imagined the child who lost their kite, the lover who left a message in a bottle, and the artist who created the butterfly sculpture.As I sat on the grass, surrounded by these unexpected treasures, I couldn't help but be grateful for the beauty and surprises that the world has to offer. It reminded me to always keep an open mind and embrace the magic of the unknown.In the end, I left the park with a heart full of wonder and a newfound appreciation for the small joys in life. The grass may have been littered with unusual objects, but to me, they were priceless treasures waiting to be discovered.。
昆虫备忘录迎春花英语作文
昆虫备忘录迎春花英语作文英文回答：As a meticulous insect, the harbinger of spring, I meticulously document my observations in my entomological notebook. My antennae twitch with anticipation as I embark on this literary expedition, eager to share my insights regarding the enchanting world of flowers.Foremost among these floral wonders is the Forsythia, a captivating shrub that bursts into a blaze of yellow glory each spring. Its vibrant blossoms herald the arrival of warmer days, their delicate petals unfurling like tiny golden trumpets. Upon closer examination, I discernintricate patterns on their surfaces, each blossom a miniature masterpiece of nature's artistry.The sweet fragrance of the Forsythia blooms permeates the air, attracting a myriad of pollinators. Bees buzz busily among the branches, their bodies laden with pollen.I watch in fascination as they delicately extract nectar from the blossoms, their movements a testament to the intricate dance of life.Beyond the Forsythia, I explore a tapestry of other spring flowers, each with its own unique allure. The delicate petals of the Crocus emerge from the melting snow, painting the landscape with vibrant hues. The Narcissus, with its elegant trumpet-shaped blossoms, reflects its own beauty in the still waters of nearby ponds.As the season progresses, I witness the arrival of the ubiquitous Dandelion, its cheerful yellow blossoms dotting meadows and roadsides alike. Its fluffy seed heads, borne aloft by the wind, carry the promise of future blooms.Throughout my springtime expeditions, I am struck by the incredible diversity and beauty of the floral world. Each flower is a testament to the wonder and complexity of nature, a masterpiece deserving of our admiration and appreciation.中文回答：作为一只细致入微的昆虫，春天的使者，我仔细地在我的昆虫学笔记本中记录我的观察。
树袋熊的英语单词
表示“树袋熊”的英语单词及其相关单词一、树袋熊的英语名称树袋熊是一种澳大利亚特有的有袋类动物，属于结趾科，是结趾科的唯一现存物种。
树袋熊的英语名称有以下几种：koala：这是最常用的英语名称，也是官方推荐的名称。
它的发音是[kəʊ'ɑːlə]，第一个音节重读，第二个音节长元音，第三个音节弱读。
koala bear：这是另一个常用的英语名称，但并不准确，因为树袋熊并不是真正的熊，而是有袋类动物。
它的发音是[kəʊ'ɑːlə beə(r)]，第一个音节重读，第二个音节长元音，第三个音节弱读，bear和英国发音相同。
phascolarctos cinereus：这是树袋熊的学名，意思是“灰色的育婴囊熊”。
它的发音是[fæskə'lɑːktəs sɪnə'riːəs]，第二个音节重读，第四个音节长元音。
二、树袋熊单词的词义和用法1. koala词性：名词释义：一种澳大利亚特有的有袋类动物，属于结趾科，以桉树叶为食，多数时间待在高高的树上。
例句：The koala is unique to Australia. 树袋熊是澳大利亚独有的。
I saw a koala mother with her baby on her back. 我看到了一只树袋熊妈妈和它背上的小树袋熊。
The koala is the most popular animal in this zoo. 考拉是这个动物园里最受欢迎的动物。
2. koala bear词性：名词释义：树袋熊的另一种英语名称，但并不准确，因为树袋熊并不是真正的熊，而是有袋类动物。
例句：The koala bear has a thick and soft fur. 树袋熊有一身又厚又软的浓密毛皮。
The koala bear is not a bear at all. 树袋熊根本不是熊。
3. phascolarctos cinereus词性：名词释义：树袋熊的学名，意思是“灰色的育婴囊熊”。
奇怪羊驼英语作文初一
奇怪羊驼英语作文初一The Strange AlpacaAlpacas are a fascinating and unique species of camelid native to the Andes mountains of South America. While they may resemble their larger cousins the llamas, alpacas have their own distinct characteristics and behaviors that set them apart. One such alpaca, however, has proven to be particularly strange and intriguing.It all began when a local farmer in a remote Andean village came across an alpaca that was unlike any he had seen before. This alpaca, while sharing the same general appearance as its herd mates, exhibited a number of peculiarities that set it apart. For starters, its fleece was a vibrant shade of electric blue, a color that is virtually unheard of in the alpaca world. The farmer was initially taken aback by this unexpected hue, having never encountered anything like it in all his years of raising these gentle herd animals.But the strange alpaca's oddities did not end there. As the farmer observed it more closely, he noticed that its movements wereunusually jerky and erratic, almost as if it were being controlled by an unseen puppet master. The alpaca would suddenly start running in tight circles, then abruptly stop and stare off into the distance with an unnerving intensity. Its vocalizations were also quite strange, emitting a series of high-pitched bleats that seemed to have no discernible pattern or purpose.Intrigued by this bizarre behavior, the farmer decided to keep a close eye on the alpaca, hoping to uncover the source of its peculiarities. He soon discovered that the animal appeared to be sensitive to certain stimuli that had no effect on the rest of the herd. For example, the alpaca would become agitated and start thrashing about whenever a particular type of flower bloomed in the nearby fields. It also seemed to be able to detect the presence of a specific mineral deposit deep underground, responding with a frenzied digging behavior that left the other alpacas utterly bewildered.As word of the strange alpaca spread throughout the village, more and more people began to flock to the farmer's property to catch a glimpse of this remarkable creature. Some were convinced that it possessed supernatural powers, while others simply marveled at its sheer uniqueness. The local authorities even got involved, sending a team of researchers to study the alpaca and try to determine the cause of its bizarre traits.After weeks of observation and analysis, the researchers were able to uncover some intriguing clues about the alpaca's strange behavior. It turned out that the animal's blue fleece was the result of a rare genetic mutation, one that had never been documented in the scientific literature. This mutation, they theorized, was also responsible for the alpaca's heightened sensitivity to certain environmental stimuli and its erratic movements.But the most fascinating discovery was yet to come. The researchers found that the alpaca's brain exhibited a level of complexity and activity that was far beyond what is typically seen in these animals. It was as if the alpaca's mind was operating on a different plane, processing information and responding to its surroundings in ways that defied conventional understanding.This revelation only served to deepen the mystery surrounding the strange alpaca. Was it simply a product of a random genetic quirk, or was there something more profound at play? The researchers were eager to delve deeper, to uncover the full extent of this alpaca's remarkable abilities and the implications they might hold for our understanding of these fascinating creatures.As the months passed, the strange alpaca continued to captivate and confound all who encountered it. The farmer, now something of a local celebrity, took great pride in his unique herd member, and evenbegan to develop a deep bond with the enigmatic animal. He would often sit for hours, watching the alpaca as it engaged in its peculiar behaviors, trying to decipher the meaning behind its every movement and vocalization.Meanwhile, the researchers continued their investigations, conducting a series of increasingly sophisticated experiments and tests. They discovered that the alpaca's heightened senses allowed it to detect subtle changes in the environment that were imperceptible to the human eye, and that its erratic movements were actually a form of complex communication, a language that the other alpacas seemed to understand.But the most remarkable finding was yet to come. The researchers, using advanced neuroimaging techniques, were able to determine that the strange alpaca's brain was not only more active than that of its herd mates, but it also exhibited a level of interconnectivity and plasticity that was truly unprecedented. It was as if the alpaca's mind was operating on a higher plane, with the ability to process information and make connections in ways that defied our current understanding of animal cognition.The implications of these discoveries were staggering. Could this strange alpaca hold the key to unlocking a deeper understanding of the inner workings of the camelid mind? And what might this meanfor our broader understanding of animal intelligence and consciousness? The researchers were eager to continue their investigations, to delve even deeper into the mysteries of this remarkable creature.As for the farmer, he continued to cherish his unique herd member, marveling at its every quirk and behavior. He knew that he had stumbled upon something truly special, a living embodiment of the wonders that still lie undiscovered in the natural world. And he was determined to do everything in his power to protect and preserve this strange and fascinating alpaca, for the benefit of all who would come to marvel at its extraordinary existence.In the end, the story of the strange alpaca serves as a powerful reminder of the incredible diversity and complexity of the natural world. It reminds us that there is still so much to be learned, so many mysteries yet to be unraveled, and that the more we open ourselves to the wonders of the world around us, the more we may discover about the true nature of life itself.。
观察植物蒲公英的作文
观察植物蒲公英的作文英文回答：Dandelions are fascinating plants that have always caught my attention. Their bright yellow flowers and fluffy white seed heads are a common sight in fields and gardens. Observing dandelions, I have come to appreciate their unique characteristics and the role they play in the ecosystem.One thing that stands out about dandelions is their ability to adapt and thrive in different environments. They can grow in almost any type of soil and are often considered weeds because of their invasive nature. However, this resilience is also what makes them so interesting. No matter how harsh the conditions, dandelions find a way to survive and spread their seeds.Another fascinating aspect of dandelions is their reproduction method. The fluffy white seed heads, known as"dandelion clocks," are actually a clever adaptation for dispersing seeds. When the wind blows, the seeds detach from the plant and float away, sometimes traveling long distances. It's like nature's way of ensuring that dandelions can colonize new areas and continue to thrive.Furthermore, dandelions have a long history of being used for medicinal purposes. The leaves are rich in vitamins and minerals, and they can be consumed in salads or brewed into tea. Dandelion root has also been used in traditional medicine to treat various ailments, such as digestive issues and liver problems. It's amazing how a plant that is often seen as a nuisance can actually have so many health benefits.In addition to their adaptability and medicinal properties, dandelions also have cultural significance. They are often associated with childhood and are commonly used in games and activities. Blowing on a dandelion clock and watching the seeds float away is a simple pleasure that many of us have experienced. It's a symbol of hope and wishes coming true, as we make a wish and let the windcarry it away.Overall, observing dandelions has given me a deeper appreciation for the beauty and resilience of nature. These plants may be considered weeds by some, but they have so much to offer. From their ability to adapt to different environments to their clever seed dispersal method and medicinal properties, dandelions are truly remarkable.中文回答：蒲公英是一种令人着迷的植物，它们总是吸引着我的注意。
描写小丑鱼和海葵英语作文
描写小丑鱼和海葵英语作文The Colorful Clownfish and Their Stingy FriendsHave you ever seen a clownfish before? They are the most colorful and funniest looking fish in the whole ocean! My favorite clownfish is the Ocellaris clownfish. They are bright orange with three white stripes on their bodies. Their faces look like they are smiling all the time, which makes them seem really happy and friendly.Clownfish are so cool because they are the only fish that can live safely with sea anemones without getting stung! Sea anemones are animals that look like colorful flowers attached to rocks on the ocean floor. But don't be fooled by their pretty looks - they can sting anything that touches them with their tentacles. Their tentacles are covered in tiny poisonous harpoons that will inject venom and paralyze any fish or creature that bumps into them. Ouch!So how do clownfish manage to snuggle up next to these stinging sea monsters? Well, clownfish have a special mucus coating that protects them from the sea anemones' venomous stings. It's like they are wearing a tiny invisibility cloak that makes them undetectable to the anemones. As long as the clownfishregularly brushes up against the tentacles and gets a new coating of mucus, the anemone thinks the clownfish is just another tentacle and leaves it alone.This is a great partnership because the clownfish gets protection from predators by hiding among the stinging tentacles, and the sea anemone gets food scraps from whatever the clownfish leaves behind while eating. It's like the clownfish has hired bodyguards covered in poison spikes to keep it safe!Clownfish are amazing parents too. The female clownfish lays hundreds of tiny eggs which attach to a hard surface like a rock or the underside of a sea anemone's tentacles. Both the mother and father take turns fanning the eggs with their fins to make sure they get plenty of oxygen. They also carefully protect the eggs from any fish or creature that might try to eat them. After about 6-10 days, the eggs hatch into tiny larvae that immediately start swimming off to find their own home.My favorite thing about clownfish is that they are all born as males first! When they are babies, every single clownfish is a male. Then, as the clownfish grow older and bigger, the biggest and most dominant clownfish will turn into a female through a process called sequential hermaphroditism. Once she becomes the female of the group, she is the only one that can lay eggs.The other clownfish stay as males and help protect and take care of her eggs. If the female clownfish dies or gets eaten, the next biggest male will turn into a female to take her place. That's so interesting!I think clownfish make such awesome pets because they have big personalities packed into their tiny bodies. They are constantly swimming around, chasing each other, and begging for food. Since they are so used to hosting and sharing their home with anemones, clownfish do really well when kept with certain types of anemones in aquariums. However, you have to be very careful when first introducing them because the anemone could still potentially sting the new clownfish if it doesn't have that protective mucus coating yet.Some aquarium owners have even trained their clownfish to swim right into their hands at feeding time! Clownfish are very intelligent for fish and can learn to recognize their owners. Although they are only a few inches long, clownfish are super interactive, energetic, and fun to watch.If you ever get the chance to see clownfish up close, definitely take it! Their bright orange colors, white stripes, and big smiles are impossible not to love. Just be sure to look but not touch any of the waving sea anemone tentacles they might beliving with. Those stingers are no joke! Clownfish are some of the most interesting, unique, and amazing animals in the ocean. I'm really glad I got to learn all about how they make their homes inside stinging sea anemones and become buddies with their terrifying but important hosts!。
唐山2024年01版小学6年级下册Y卷英语第4单元暑期作业
唐山2024年01版小学6年级下册英语第4单元暑期作业考试时间：90分钟（总分:100）B卷考试人：_________题号一二三四五总分得分一、综合题(共计100题)1、填空题：_____ (topsoil) is where most plants grow.2、听力题：Mercury has extreme ______ variations.3、填空题：The _____ (草) grows tall and thick.4、听力题：Cows eat ______.5、What is 10 3?A. 7B. 6C. 5D. 4答案:A6、听力题：The Earth's ______ is made up of different types of ecosystems.7、填空题：The butterfly has colorful ______.8、填空题：_____ (phototropism) describes how plants grow towards light.9、Which bird is known for its colorful feathers and ability to mimic sounds?a. Sparrowb. Parrotd. Pigeon答案:b10、听力题：I see a ___ (cloud) in the sky.11、听力题：The main mineral found in bones is __________.12、What is the capital of Cuba?a. Havanab. Santiagoc. Trinidadd. Camagüey答案:a13、What do you call a person who collects stamps?A. PhilatelistB. NumismatistC. CollectorD. Dealer答案:A14、听力题：My brother is a ______. He loves to ride his bike.15、听力题：The process of burning is called ______.16、填空题：The __________ was a time of exploration and colonial expansion.17、What is the name of the famous American singer known for "Like a Prayer"?A. MadonnaB. Britney SpearsC. Lady GagaD. Janet Jackson答案:A18、填空题：My dad teaches me how to ______ (骑自行车). I am learning to balance and pedal.19、选择题：What do you call the process of converting a liquid into a solid?A. FreezingC. EvaporatingD. Condensing20、听力题：The process of separating liquids based on their boiling points is called _______.21、填空题：The __________ (森林) helps clean the air.22、What is the opposite of 'soft'?A. HardB. SmoothC. RoughD. Light答案:A23、填空题：Chemical reactions often involve a __________ (能量) change.24、听力题：My dad cooks _____ (breakfast/lunch) on Sundays.25、What is the color of a typical banana?A. GreenB. YellowC. RedD. Blue答案:B26、听力题：The ____ has soft fur and loves to cuddle with people.27、选择题：What do we call a person who repairs plumbing?A. ElectricianB. PlumberC. MechanicD. Carpenter28、What do you call the tall part of a tree?A. LeafB. RootC. TrunkD. Branch答案:CThe antelope grazes on _______ (草).30、What is the capital of Switzerland?A. BernB. ZurichC. GenevaD. Lucerne答案:A31、What do we call the place where we watch movies?A. TheaterB. MuseumC. LibraryD. Park32、选择题：How many days are in a week?A. FiveB. SixC. SevenD. Eight33、填空题：The ______ (户外活动) can include gardening.34、听力题：The Earth’s rotation affects ocean ______ and weather patterns.35、填空题：My sister enjoys __________ (参加研讨会).36、填空题：The __________ (奴隶制) was abolished in many countries in the 19th century.37、听力题：My dad cooks _____ (breakfast/lunch) on Sundays.38、What do we call a person who creates jewelry?A. JewelerB. GoldsmithC. SilversmithD. Artisan答案: AThe _____ (ancient) Greeks created many myths and legends.40、填空题：The capital of Togo is ________ (多哥的首都是________).41、听力题：The stars twinkle ________ at night.42、填空题：The _____ (植物细胞) help in growth and development.43、听力题：A pendulum swings back and ______.44、听力题：I want to learn how to ______ (surf) on the waves.45、What do we call a scientist who studies living things?A. ChemistB. BiologistC. PhysicistD. Geologist答案:B46、填空题：Goldfish live in a _______ (鱼缸).47、听力题：A __________ is a geological feature that can be shaped by erosion.48、填空题：I have many ________ (玩具) in my room.49、What is the name of the largest type of galaxy?A. Irregular GalaxyB. Elliptical GalaxyC. Spiral GalaxyD. Lenticular Galaxy50、填空题：The first successful total limb transplant was performed in ________.51、Which animal is known for its slow movement and shell?A. TurtleB. SlothC. SnailD. Armadillo答案:A52、听力题：A _____ is a large area of stars, gas, and dust.53、What is the capital of the Democratic Republic of the Congo?A. KinshasaB. BrazzavilleC. LuandaD. Kampala答案: A. Kinshasa54、听力题：A river can shape the land through ______ over time.55、填空题：Fungi are not _____ (植物) but they thrive in soil.56、填空题：A _____ (植物信息平台) can enhance knowledge sharing.57、听力题：The _______ of an object can change as it moves.58、听力题：A compound has a fixed _______ and cannot be separated by physical means.59、填空题：I have a pet ______.60、What do you call a young giraffe?A. CalfB. KidC. CubD. Pup61、What is the name of the famous clock tower in London?A. Big BenB. Eiffel TowerC. Leaning TowerD. Tower of Pisa答案: A. Big Ben62、听力题：I like to eat _____ for lunch. (sandwiches)63、听力题：The main ingredient in antifreeze is _____.64、听力题：I can ___ my friend. (meet)65、听力题：I like to ride ______ with my friends. (horses)66、What do we call a story that teaches a lesson, often with animals?A. FableB. NovelC. BiographyD. Poem答案:A67、听力题：The chemical formula for ammonium nitrate is _______.68、听力题：The chemical symbol for lead is ______.69、What is the name of the highest mountain in the world?A. K2B. KilimanjaroC. EverestD. Denali答案:C70、填空题：I can make a __________ (名词) with my __________ (玩具名).71、What is the name of the famous wizard in "Harry Potter"?A. DumbledoreB. VoldemortC. SnapeD. Harry Potter72、填空题：The capital city of Malaysia is ________ (马来西亚的首都城市是________).73、What is the capital of Switzerland?A. ZurichB. GenevaC. BernD. Basel74、听力题：We will go ______ in the evening. (walking)75、填空题：My grandma loves to _______ (动词) in her garden. 她的花都很 _______ (形容词).76、Which of the following is a primary color?A. GreenB. PurpleC. BlueD. Pink77、听力题：The chemical formula for calcium sulfate is ______.78、填空题：Roses are beautiful _______ that smell sweet.79、听力题：A ____ swims in the pond and has smooth skin.80、填空题：The cat is very ______.81、填空题：My dad is my strong _______ who lifts me up when I'm down.82、What do we call the process of removing harmful substances from the environment?A. RemediationB. Pollution controlC. CleanupD. Rehabilitation答案: A. Remediation83、填空题：The frog catches insects with its sticky ______ (舌头).84、听力题：The chemical formula for caprylic acid is ______.85、填空题：I enjoy watching a _______ (小狐狸) in the wild.86、听力题：The apples are ___. (ripe)87、What type of tree produces acorns?A. PineB. OakC. MapleD. Birch答案:B88、What do you call a story that is made up?A. TrueB. FictionC. Non-fictionD. History答案: B89、听力题：I want to ________ (explore) the world.90、How many weeks are in a year?A. 50B. 52C. 54D. 56答案:B91、填空题：I want to _______ (学会)如何摄影。
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a rXiv:071.4216v1[he p-ph]23Oct27Anomalous GPDs in the photonS.Friot 1,B.Pire 2and L.Szymanowski 2,3∗1-Universit´e Paris Sud-11-Institut de Physique Nucl´e aire,94510Orsay,France2-Centre de Physique Th´e orique,´Ecole Polytechnique,CNRS,91128Palaiseau,France 3-Soltan Institute for Nuclear Studies,Warsaw,Poland Abstract We consider deeply virtual Compton scat-tering (DVCS)on a photon target,in the generalized Bjorken limit,at the Born order and in the leading logarithmic approxima-tion.This leads us to the extraction of the photon anomalous generalized parton distri-butions (GPDs)[1,2].1Introduction At high energies,the point-like nature of the photon dominates over its hadronic compo-nent.This allows for a purely perturbative evaluation of its structure functions F γ2and F γL ,which have therefore been the subject of much work during the seventies because,at this time,this unique feature was hoped to allow for an experimental confirmation of the fractional charge of quarks.Still at this time,the photon structure functions were also un-der intense study due to the completely dif-ferent behaviour that they exhibit,comparedto the nucleons structure functions.Indeed,it had been proven in [3]that F γ2shows a log Q 2behaviour already at the parton model (PM)level and,what was even more surpris-ing,that this PM result is renormalized when taking into account QCD corrections [4].A very accurate determination of the photon structure functions is now available [5](see also [6])and it is in accord with experiments [7].position of T µναβreads a [11]T µναβ=18g µαT g νβT +g ναT g µβT −g µνT g αβT W 2+12π2 1−1dx 2x 1−ξ2+θ(ξ−x )θ(ξ+x )x (1−ξ)1−ξ2 log m 22π2 1−1dx 2ξ1−ξ2−θ(ξ−x )θ(ξ+x )1−ξ1−ξ2 log m 2a For simplicity,we restricted to the case where ∆T ,the transverse part of ∆.=p 2−p 1,vanishes,that is zero scattering angle (but there is still a lon-gitudinal momentum transfer).box,crossed and cat-ears diagrams contribu-tions (obviously a similar cancellation also occurs when summing the ‘antiquarks’dia-grams contributions).The second point con-cerns the cat-ears diagrams.Although it is crucial to include their contributions to can-cell UV divergences,they do not lead to any log m2Q 2=F (x,ξ)log m 2Q 2,(4)where M F is an arbitrary factorization scale.We will show below that the first term with logm 2Q 2corresponds to the so-called pho-ton content of the photon,coming from the matrix element of the two photon correlator A µ(−z 2)which contributes at the same order in αem as the quark correlator to the scattering amplitude.Choosing M 2F =Q 2will allow to express the DVCS amplitude only in terms of the quark content of the pho-ton.3QCD factorization of the DVCSamplitude on the photonTo understand the results of Eqs.(1-3)within the QCD factorization,we first consider two quark non local correlators on the light cone and their matrix elements between real pho-ton states :Photon 2007F q=dz 2N )γ.Nq (z2πe ixz γ(p ′)|¯q (−z 2N )|γ(p ) ,where we note N =n/n.p and where we ne-glected,for simplicity of notation,both the electromagnetic and the gluonic Wilson lines.There also exists the photon correla-tor F Nµ(−z 2N )(where F Nµ=N νF νµ),which mixes with the quark oper-ators [4],but contrarily to the quark correla-tor matrix element,the photonic one begins at order α0em ,as seen forinstance in the sym-metric case (where Z .=z 2πe ixz γ(p 2)|F Nµ(−Z )F νN (Z )g T µν|γ(p 1) =−g µνT ǫµ(p 1)ǫ∗ν(p 2)(1−ξ2)[δ(1+x )+δ(1−x )].(6)The quark correlator matrix elements,cal-culated in the lowest order of αem and αS ,suffer from ultraviolet divergences,which we regulate through the usual dimensional reg-ularization procedure,with d =4+2ǫ.We obtain (with 1ǫ+γE −log 4π)F q =N C e 2qˆǫ+log m 2 F (x,ξ),(7)withF (x,ξ)=x 2+(1−x )2−ξ21−ξ2θ(−ξ>x >−1)+x (1−ξ)ˆǫterms in Eq.(7)definethe non-diagonal element Z ¯q q F F of the multiplicativematrixof renormalization constants Z .The 14π2g µνT ǫµ(p 1)ǫν(p 2)log m 2usual hard process amplitudes:C q=−2e2q 1x+ξ−iη .V/AWe recover in that way the log m2。