On the non-existence of a universal Hadamard gate
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死亡不是终点,遗忘才是英语作文Title: Death is not the End, Forgetting isDeath is a universal truth that every individual must face at some point in their lives. It is the end of our physical existence, but is it really the end of everything?Many people believe that death is the ultimate end, the final destination of our journey in this world. However, I believe that death is not the end, but rather just a transition to another form of existence. Life is a cycle, and death is just a stage in that cycle. Our physical bodies may perish, but our souls live on in the memories of those who knew us and in the legacy we leave behind.Forgetting, on the other hand, is the real end. When we are no longer remembered or spoken of, when our names are no longer mentioned and our stories forgotten, that is when we truly cease to exist. It is not death that should be feared, but rather the idea of being forgotten.Throughout history, there have been many individuals who have achieved great things and left a lasting impact on the world. Their names are remembered and their contributions celebrated, making them immortal in a sense. They may have died physically,but their legacy lives on. On the other hand, there are countless others who have lived and died in obscurity, their stories never told and their names never spoken again. They may have lived, but they have been forgotten, and in a way, they are truly gone.In today's fast-paced world, where information is constantly being generated and consumed, it is easy for individuals to be forgotten. With the rise of social media and the internet, our lives are being documented and shared more than ever before. However, this also means that our stories can easily be lost in the sea of information and quickly forgotten.It is important, therefore, to strive to leave a lasting impact on the world, to be remembered for something meaningful and significant. Whether it is through our work, our actions, or our relationships, we can all make a difference and leave a legacy that will endure long after we are gone.So, let us not fear death, for it is just a part of the cycle of life. Instead, let us strive to live our lives to the fullest, to make a difference in the world, and to be remembered for who we were and what we did. Death is not the end, but forgetting is. Let us strive to be remembered.。
(此文即是雪莱19岁时遭牛津开除之作)对真理的爱是促使作者写这篇短论的唯一动机。
因此,如果有的读者发现作者在推理上有任何缺陷,或者能够提出作者的心灵永远发现不了的证据,作者恳切地请求他们以同样扼要、同样严格和同样坦率的方式,发表他们的论据以及反对意见。
由于〔有神论的〕证据不足,本文作者是:一个无神论者。
严密地检验支持任何命题的证明是否有效,是获得真理的唯一可靠方法;关于这种方法的优点,是不需要多说的。
我们关于上帝存在的知识;是一个极其重要的论题;无论怎样细致的研究,也决不会是过分的。
就是根据这一认识,我们现在扼要地、无所偏袒地考察一下那些已经提出了的证明。
我们首先必须考虑什么是信仰的本质。
当一个命题出现在心灵面前时,心灵就对构成这一命题的观念,产生同意或不同意的感觉。
对于这些观念感到同意,就称为相信,有许多障碍往往阻止心灵产生这种直接的感觉;心灵就企图消除这类障碍,以便使这种感觉显得清晰。
心灵为了对于构成命题的诸观念间的关系有完整的感觉,而对它们进行研究,这种研究是主动的;但是心灵对于这些观念间的关系的感觉,却是被动的。
由于把心灵的这种研究和感觉混淆起来的缘故,就使许多人错误地以为心灵在信仰上是主动的,认为信仰是一种意志的活动,其结论就成为:信仰可以受心灵的制约。
他们由于坚执着这种错误的观点,就进一步使不信仰带有一定程度的罪恶性质;但按不信仰的本质来说,是不可能带有罪恶性质的;它也同样不可能带有善的性质。
因此,信仰是一种感情,这种感情的力量,就同其他各种感情一样,恰好同激动的程度成正比。
激动的程度有三种。
感觉是心灵获得一切知识的源泉;因而感觉的证据使人产生最强烈的同意。
心灵的判断是建立在我们亲身经验的基础之上的,这种经验来自感觉的源泉;因此,根据经验的判断,在激动的程度上属于第二等。
他人的经验,传达到我们的经验中,那就属于程度最低的一种(可以制订一种在程度上逐步增加的标尺,其上可以标明各种命题经受感觉考查的不同能力,命题的这种能力,将能准确地表明它们应该得到的信仰的程度。
英语哲学思想解读50题1. The statement "All is flux" was proposed by _____.A. PlatoB. AristotleC. HeraclitusD. Socrates答案:C。
本题考查古希腊哲学思想家的观点。
赫拉克利特提出了“万物皆流”的观点。
选项A 柏拉图强调理念论;选项B 亚里士多德注重实体和形式;选项D 苏格拉底主张通过对话和反思来寻求真理。
2. "Know thyself" is a famous saying from _____.A. ThalesB. PythagorasC. DemocritusD. Socrates答案:D。
此题考查古希腊哲学家的名言。
“认识你自己”是苏格拉底的名言。
选项A 泰勒斯主要研究自然哲学;选项B 毕达哥拉斯以数学和神秘主义著称;选项C 德谟克利特提出了原子论。
3. Which philosopher believed that the world is composed of water?A. AnaximenesB. AnaximanderC. ThalesD. Heraclitus答案:C。
本题考查古希腊哲学家对世界构成的看法。
泰勒斯认为世界是由水组成的。
选项A 阿那克西美尼认为是气;选项B 阿那克西曼德认为是无定;选项D 赫拉克利特提出万物皆流。
4. The idea of the "Forms" was put forward by _____.A. PlatoB. AristotleC. EpicurusD. Stoics答案:A。
这道题考查古希腊哲学中的概念。
柏拉图提出了“理念论”,即“形式”。
选项B 亚里士多德对其进行了批判和发展;选项C 伊壁鸠鲁主张快乐主义;选项D 斯多葛学派强调道德和命运。
5. Who claimed that "The unexamined life is not worth living"?A. PlatoB. AristotleC. SocratesD. Epicurus答案:C。
高一英语哲学观点单选题40题答案解析版1.The idea that everything is connected is an example of which philosophical view?A.DualismB.MonismC.SkepticismD.Empiricism答案:B。
本题考查哲学观点的英文表达。
Monism 一元论认为万物是相互联系的,一切都源于一个单一的实体或原则。
Dualism 二元论强调世界由两个基本的、相互独立的实体组成。
Skepticism 怀疑主义是对知识的怀疑。
Empiricism 经验主义强调知识来源于经验。
2.Which philosophical view emphasizes the importance of sensory experience in gaining knowledge?A.RationalismB.EmpiricismC.IdealismD.Pragmatism答案:B。
Empiricism 经验主义认为知识主要通过感官经验获得。
Rationalism 理性主义强调通过理性思考获得知识。
Idealism 唯心主义认为意识或观念是世界的本质。
Pragmatism 实用主义关注行动的实际效果。
3.The belief that the mind is separate from the body is characteristicof which philosophy?A.DualismB.MonismC.SkepticismD.Empiricism答案:A。
Dualism 二元论认为心灵和身体是两个独立的实体。
Monism 一元论认为万物统一。
Skepticism 怀疑主义对知识怀疑。
Empiricism 经验主义强调感官经验。
4.Which philosophical view holds that truth is relative and depends on context?A.AbsolutismB.RelativismC.ObjectivismD.Foundationalism答案:B。
existence造句1. The existence of black holes has been a topic of much debate among scientists.黑洞的存在一直是科学家们争论的话题。
2. The artist's work speaks volumes about the existence of human suffering.艺术家的作品充分说明了人类苦难的存在。
3. The evidence suggests that ancient humans had knowledge of the existence of other continents.证据表明,古代人类知道其他大陆的存在。
4. The concept of time travel is fascinating, but its existence in reality is still a matter of debate.时间旅行的概念非常吸引人,但其在现实中的存在仍然是一个争论的话题。
5. The existence of a universal basic income is being increasingly discussed as a potential solution to poverty.普遍基本收入的存在作为解决贫困的潜在方案,正在越来越多地被讨论。
6. Many philosophers have questioned the existence of an objective reality.许多哲学家质疑客观现实的存在。
7. The preservation of endangered species is crucial to the existence of biodiversity on Earth.保护濒危物种对地球上生物多样性的存在至关重要。
英语作文开头万能金句发卷Introductions with a Universal Appeal.1. The Call to Curiosity."Gazing upon the enigmatic canvas of life, we find ourselves tantalized by mysteries that beckon us to explore their intricate depths.""In the realm of human experience, there lies a tapestry of questions that tug at the threads of our curiosity, inviting us to unravel their hidden narratives.""As we journey through the labyrinth of human knowledge, we are confronted by crossroads where wonder and inquiry guide our footsteps."2. The Allure of the Unknown."Uncharted territories beckon with an irresistiblesiren song, promising adventures that test our limits and ignite our imaginations.""The allure of the unknown drives us to embark on quests that push the boundaries of our understanding and expand the horizons of our possibilities.""In the uncharted waters of exploration, we find solace in our boundless thirst for knowledge and the exhilaration of charting new paths."3. The Importance of Perspective."The world is a kaleidoscope of perspectives, each refracting reality through a unique lens.""By embracing diverse viewpoints, we broaden our horizons and gain a deeper appreciation for the complexities of existence.""Through the prism of empathy, we can transcend our own biases and connect with the experiences of others."4. The Power of Storytelling."Stories weave the intricate threads of human experience into a tapestry of shared emotions and insights.""In the realm of literature, we find solace, inspiration, and a profound understanding of the human condition.""Through the power of storytelling, we can connect with our past, present, and future, uncovering the universal truths that bind us together."5. The Alchemy of Knowledge."Knowledge is the alchemical elixir that transforms ignorance into wisdom.""In the crucible of education, we forge our minds into tools of critical thinking and innovation.""Through the pursuit of knowledge, we unlock our potential and empower ourselves to shape the world around us."6. The Value of Experience."Life is a grand tapestry woven with myriad experiences, each thread enriching the fabric of our being.""Through the crucible of adversity, we discover hidden strengths and forge an unbreakable spirit.""In the tapestry of experience, we find both joy and sorrow, shaping us into the individuals we are destined to become."7. The Journey Within."Within the labyrinth of our own minds, we embark on an introspective journey of self-discovery.""In the depths of our consciousness, we encounter the hidden desires, fears, and aspirations that define our true nature.""Through the process of introspection, we cultivate a profound understanding of ourselves and our place in the vast tapestry of existence."8. The Interconnectedness of All Things."We are but threads in the intricate tapestry of life, interconnected by a web of invisible bonds.""The actions of one ripple through the fabric of time and space, affecting the lives of countless others.""In our interconnectedness, we find both vulnerability and a profound sense of belonging."9. The Call to Action."The challenges of our time demand that we act with courage and determination.""We must harness our collective wisdom and resources to create a world that is just and sustainable for all.""In the face of adversity, we find strength in unity and a shared vision for a brighter future."10. A Universal Aspiration."At the heart of all human beings lies a universal aspiration for connection, purpose, and fulfillment.""We strive to leave our mark on the world, to make a difference, and to find meaning in our fleeting existence.""In the pursuit of our shared dreams, we discover the true measure of our humanity."。
英语作文高级表达方式-抽象名词英语作文高级表达方式-1. ABSENCE: (with/there is) the absence of attempt/ work 缺少、缺乏、缺少、缺乏、没有A.Many medical experts are now agreed that with the general absence of roughage,modem citizens are literally---via heart attacks and cancer--eating and drinking themselves into the grave.许多医学专家现在一致认为,由于食物中总体缺少粗粮,现代公民们就是这样一日三餐,不知不觉地患上了心脏病和癌症。
最终送命,这样说并非言过其实。
B.There seems to have been an absence of attempt at conciliation between rival sects.似乎没有进行任何尝试去调解对立派之间的矛盾。
C.For large numbers of people, the absence of work is harmful to theirhealth.对大多数人来说,没有工作对他们的身体反而有害。
2. ACCEPTANCE: have/find/obtain/gain/win (general/immediate/wide) acceptance for/among/of 支持A.Academic dishonesty has had relatively strong peer support and acceptance among some students, partly because we did not make a serious effort to explain why such behavior is contemptible.学习上的作弊得到同伴相对有力的支持,也被一些学生所接受。
英语名言录马克.吐温十大经典名言Mark Twain, the famous American author and humorist, left behind a legacy of wit and wisdom in his numerous works. His sharp observations on society, human nature, and life in general are reflected in his memorable quotes that continue to inspire and entertain people around the world. Here are ten of Mark Twain's most classic quotes:1. "The two most important days in your life are the day you are born and the day you find out why."This quote highlights the significance of self-discovery and finding one's purpose in life. It encourages individuals to seek meaning and fulfillment in their journey through self-exploration and introspection.2. "Kindness is the language which the deaf can hear and the blind can see."Mark Twain's eloquent words emphasize the universal nature of kindness as a form of communication that transcends physical barriers. It serves as a reminder of the power of compassion and empathy in fostering understanding and connection among people.3. "The secret of getting ahead is getting started."This quote underscores the importance of taking action and initiating progress towards one's goals. It encourages individuals to overcome procrastination and inertia by taking the first step towards achieving success and realizing their aspirations.4. "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do."Mark Twain's insightful observation underscores the regret that can arise from missed opportunities and unrealized potentials. It serves as a reminder to seize the moment and embrace new experiences with courage and enthusiasm.5. "Courage is resistance to fear, mastery of fear, not absence of fear."This quote highlights the essence of courage as the ability to confront and overcome one's fears rather than being devoid of fear altogether. It emphasizes the importance of facing challenges with resilience and determination.6. "The only way to keep your health is to eat what you don't want, drink what you don't like, and do what you'd rather not."Mark Twain's humorous take on maintaining health through disciplined habits offers a lighthearted perspective on the sacrifices required for physical well-being. It serves as a reminderof the importance of self-discipline and moderation in leading a balanced lifestyle.7. "Always do right; this will gratify some people and astonish the rest."This quote encapsulates the timeless principle of ethical conduct and moral integrity in one's actions. It underscores the impact of upholding one's values and principles in garnering respect and admiration from others.8. "It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt."Mark Twain's humorous advice on the value of silence and restraint in communication offers a practical insight into the consequences of hasty speech. It reminds individuals to exercise prudence and discretion in their words and actions.9. "The man who does not read has no advantage over the man who cannot read."This quote highlights the transformative power of reading as a source of knowledge, insight, and enrichment. It emphasizes the importance of literacy in cultivating intellectual growth and expanding one's understanding of the world.10. "The fear of death follows from the fear of life. A man who lives fully is prepared to die at any time."Mark Twain's profound reflection on the interconnectedness of life and death underscores the inevitability of mortality and the significance of embracing existence with purpose and vitality. It encourages individuals to live authentically and fearlessly in the face of uncertainty and impermanence.In conclusion, Mark Twain's ten classic quotes continue to resonate with readers across generations, offering timeless wisdom and humor that inspire contemplation and introspection. His sharp wit and insightful observations on human nature and society serve as a poignant reminder of the enduring relevance of his words in navigating the complexities of life.。
2021年普通高等学校招生全国统一考试英语模拟卷(七)一、阅读选择(共4题;共30分)1.阅读理解Children's books bring back joyful memories, providing kids with that much-needed escapism, entertainment and education from a young age. But sometimes it can be difficult to know which to choose. Here, experts share a selection of their favourites.Germany: Konstantin, by Gerda Wagener Vlasta BarankovaThis book follows a shy crocodile named Konstantin who finds a French horn in the jungle. The lonely reptile learns to play the instrument in secret but later with the confidence given by other animals, the nervous and lonely Konstantin finally comes out of his shell and finds friendship through his music. This heartwarming story encourages taking pride in what you do and having the courage to share it with others.Sweden: Pippi Longstocking, by Astrid LindgrenPippi, a nine-year-old girl, is always ready to challenge the authority of grown-ups and has a love of animals, especially for her pet horse and monkey. Pippi also provides a strong female presence in the story, which is often lacking in traditional children's literature and fairy tales. This is a great book for any children looking for an exciting and courageous figure that they can relate or look up to, teaching them not only to take the lead but to question the rules of the world.Sweden: Pettson and Findus by Sven NordqvistIt is a series about the adventures of an old man, Pettson, and his cat, Findus, living in their farmhouse in the countryside. Beginning usually with ordinary events, such as a camping or fishing trip, they contain lots of fantastical details of the small creatures that play tricks on Pettson. These tales encourage finding joy in the little things in life, whether it is cooking or just enjoying the great outdoors.France: The Little Prince, by Antoine de Saint-ExuperyAs one of the most translated books ever, The Little Prince is a classic in many nations beyond its native France. The plot revolves around a young prince who travels from planet to planet through space. He learns lessons about love, loneliness and friendship along the ensuing journey. The book may have been written for children, but The Little Prince includes enough reflection on complex themes to keep grown-ups entertained as well, making it a great choice for parents and children to read together.(1)What are parents supposed to do with a shy boy?A.Motivate him to learn a musical instrument.B.Accompany him to read bedtime stories.C.Encourage him to come out of his shell.cate him to challenge authorities.(2)Which is the best choice to help improve your kids' critical thinking?A.KonstantinB.Pippi LongstockingC.Pettson and FindusD.The Little Prince(3)What do the four books have in common?A.They come from the western culture.B.They are the most translated books ever.C.They are about human-animal relationship.D.They are about memories of childhood.2.阅读理解Louise Gluck has been no stranger to awards over her long and storied career since her first publication in 1968. In 1993, she won the Pulitzer Prize for her collection of poems, The Wild Iris. And on Oct 8 (2020) she became the 16th woman to win the Nobel Prize in literature with the Nobel prizes first awarded in 1901.Gluck was honored “for her unmistakable poetic voice that, with plain and simple beauty, makes individual existence universal”. Often said to be an autobiographical poet, drawing fr om the inner parts of her life, "Gluck seeks the universal, Nobel Committee Chair Anders Olsson said in a statement.Gluck, 77, the author of 12 poetry collections, has been able to turn her life experiences into universal themes covering life, loss, and isolation. Because of this, readers have often found her poetry to be "dark". However, there is much more than darkness in her voice, as noted by Olsson. "It is candid and also a voice full of humor and biting wit." he said.For example, in her poem Snowdrops, she uses the coming of spring after winter to show rebirth of life after death. She leads readers down a depressing path only to reconnect with the light at the near end. At the conclusion of the poem, readers are left to feel the "raw wind of the new world" as they watch a new spring. This is often the case in Gluck's poetry, being able to feel joy even after not having done so for a long time. When her work Faithful Virtuous Night received a National Book Award for Poetry in 2014, a judge for the award went on to say, the collection comes from "a world where darkness blurs (模糊) ordinarily sharp edges around the oppositions of our lives - loss and renewal, male and female, the living and the dead".Talking of prizes, she acknowledged that they can make "existence in the world easier" but did not amount to the immortality (永生) of a true artist. "I want to live after I die, in that ancient way." she said. "And there's no way of knowing whether that will happen, and there will be no knowing, no matter how many blue ribbons have been used to cover my body." The remark is in line with Olsson's description of Gluck's poetic voice as "candid and uncompromising” but frequently witty.(1)What can we learn about Louise Gluck?A.She is a productive and distinguished poet.B.She showed indifference to the Nobel award.C.She had her first publication in her teens.D.She gets inspiration from universal existence.(2)How do readers feel after reading Snowdrops?A.Depressed.B.Confused.C.Astonished.D.Refreshed.(3)According to Gluck, how do awards influence artists?A.By improving their health and fame.B.By popularizing their works better.C.By contributing to their living longer.D.By allowing them a better living.(4)What is the text mainly about?A.Gluck's poetry collections.B.Gluck's journey to success.C.The glories of Glucks poetry.D.The features of Gluck's poetry.3.阅读理解Could looking through trees be the view to a greener future? Trees replacing the clear glass in your windows is not a work of science fiction. It's happening now.Forest Products Laboratory researcher Junyong Zhu together with colleagues from the University of Maryland and University of Colorado has developed a transparent wood material that may be the window of tomorrow. Researchers found that transparent wood has the potential to outperform glass currently used in construction in nearly every way.While glass is the most common material used in window construction, it comes with quite a few bad consequences. Heat easily transfers through glass and amounts to higher energy bills when it escapes during cold weather and pours in when it's warm. Glass production used for construction also comes with a heavy carbon footprint. Manufacturing emissions alone are approximately 25,000 metric tons per year, without considering the heavy footprint of transporting the glass.The innovation was developed using wood from the balsa tree, which is native to South and Central America. The team treated balsa wood to an oxidizing bath, where the wood is kept in a bleach solution at room temperature to remove the light-absorbing substance from the structure. The wood is then penetrated (注入) with a synthetic polymer called polyvinyl alcohol (PVA), creating a product that is virtually transparent. So the transparent wood is created, which is far more durable and lighter than glass.Switching to transparent wood could prove to be cost efficient as well. It is approximately five times more thermally efficient than glass, cutting energy costs. It is made from a sustainable, renewable resource with low carbon emissions.With all of these potential benefits for consumers, manufacturing and the environment, the case for transparent wood couldn't be clearer.(1)What is the main problem with glass used in window construction?A.It is inefficient in letting heat out.B.It is inconvenient to transport.C.It causes a high ecological price.D.It scarcely reflects light and heat.(2)What does the underlined part "a bleach solution" refer to?A.A way to make colors fade.B.A liquid to make objects pale.C.A container to store liquids.D.A process to solve problems.(3)What do the researchers probably agree with?A.Innovation is the vitality of scientific housing.B.Things are not always what they seem.C.There are more ways to the wood than one.D.There is nothing permanent except change.(4)What is the author's attitude toward transparent wood?A.Skeptical.B.Ambiguous.C.Appreciative.D.Conservative.4.阅读理解Half of all work tasks will be handled by machines by 2025 in a shift likely to worsen inequality, a World Economic Forum report has forecast.The think tank said a "robot revolution" would create 97 million jobs worldwide but destroy almost as many, leaving some communities at risk. Routine or manual jobs in administration and data processing were most atthreat of automation, WEF said. But it said there would be a need for new jobs in care, big data and the green economy.The WEF surveyed 300 of the world's biggest companies, with more than 8 million employees globally. More than 50% of employers surveyed said they expected to speed up the automation of some roles in their companies, while 43% felt they were likely to cut jobs due to technology.WEF said the pandemic (疫情) had sped up the adoption of new technologies as firms looked to cut costs and adopt new ways of working. But it warned workers now faced a double threat from "accelerating automation and the economic impact from the Covid-19"."These things have deepened existing inequalities across labor markets and removed gains in employment made since the global financial crisis in 2007-2008," said Saadia Zahidi, managing director at WEF. "The window of opportunity for active management of this change is closing fast."WEF said currently around a third of all work tasks were handled by machines, with humans doing the rest, but by 2025 the balance would shift. Roles that relied on human skills such as advising, decision-making, reasoning, communicating and interacting would rise in demand. There would also be a sudden large increase in demand for workers to fill green economy jobs, and new roles in areas like engineering and cloud computing.But it said millions of routine or manual jobs would be displaced by technology, affecting the lowest paid, lowest skilled workers the most. It said millions would need to be re-skilled to cope with the change, while governments would have to provide "stronger safety nets" for displaced workers.(1)Who are included in "some communities" mentioned in Paragraph 2?A.Unskilled workers.B.Software engineers.C.Career consultants.anic fanners.(2)What is the purpose of paragraphs 3 and 4?A.To analyse the reliability of the figures and facts.B.To provide supporting evidence for the main idea.C.To introduce two events for discussion.D.To highlight two causes of the effects.(3)What do the displaced people expect their governments to do?A.Slow down the automation.B.Strengthen social security.C.Improve network safety.D.Promote the Robot Revolution.(4)What can be a suitable title for the text?A.Further inequalities from the Robot Revolution.B.A double threat from automation and pandemic.C.Half of all work tasks to be lost.D.Half of all work tasks to be automated.二、任务型阅读(共1题;共5分)5.任务型阅读Do you waste food?How much food do you buy each week? Are you someone who fills your fridge and cupboards with treats so that you'll always have something to eat and so that you'll never go hungry? ________Throwing away unwanted food has become a big issue in the developed world. While some of us throw away unwanted items, people in other parts of world face food shortages and are starving. ________ The actual figure is 1.3 billion tons of food, which is enough to feed a billion hungry people.You may think supermarkets are mainly to blame for this mountain of food. After all, they do cast stuff that's past its sell — by — date. They've also been criticized for encouraging customers to buy more than they need. ________ In Europe an incredible 53% of food waste comes from households, which results in 88 million tons of food waste a year. So instead of filling our bellies, our food is filling up landfill sites. Unfortunately, this causes greenhouse gases which eventually leads to global warming and climate change.In Denmark, a woman called Selina Juul has been working hard to tackle this problem. She convinced some supermarkets to stop selling their items in quantity so that people bought only what they needed. She's set up an education program in schools. ________________ And when we're at home we should make the most of the food we have — using recipes that use up our leftovers or even sharing our extra food with our friends and neighbours.A. People buy more than they need and throw too much away.B. Or maybe, you're efficient with your shopping, only buying what you need.C. But the biggest contributor to food waste is us.D. Clearly, we need to think twice when shopping.E. We simply need to stop throwing away food and enjoy it instead.F. This has helped create a 25% reduction in food waste.G. It's shocking that a third of the world's food is wasted each year.三、完形填空(共1题;共20分)6.完形填空We have a problem that is deeply rooted in our world today. When it comes to the holidays, people tend to forget that it's the season of giving, 1 the season of receiving. We tend to be more2 about what we'll receive on Christmas morning as opposed to looking at the holidays as3 to help out those who don't have it as good as we do.So, how can we 4 the culture around the holidays and make sure that people are emphasizing the opportunity to 5 as much as they are looking forward to opening up their stockings? During this holiday season, many people receive countless 6 from organizations seeking giftsto help them fulfill their mission: helping the old, providing food for the poor, 7 for the homeless, care for 8 animals and more.Giving 9 is the right thing to do, though many of us are 10 by the task. Whether or not we have much money to 11 , it isn't always easy to 12 what we have worked so hard for, especially when we have set 13 goals—saving for retirement, a vacation or a rainy day.Even with so many reasons to be unwilling, the advantages of giving outweigh them all. When we give to those in need, either 14 to persons or through 15 , we make a positive16 to the lives of others and to our own.As we are reminded, giving ensures that we are not 17 by material things, but free through the abundance of 18 . That we have all things is not because we have a good 19of money in the bank, not because we have skill and intelligence with which to 20 bread, but because we are fortunate enough. May we be good at giving from what we have received from our fortune.1. A. other than B. more than C. rather than D. less than2. A. concerned B. appreciated C. careless D. surprised3. A. plan B. time C. relief D. choice4. A. change B. reserve C. keep D. doubt5. A. find B. hold C. give D. take6. A. decisions B. requests C. questions D. comments7. A. dream B. shelter C. policy D. payment8. A. abused B. small C. lovely D. domestic9. A. casually B. confidently C. temporarily D. selflessly10. A. frightened B. confused C. amazed D. challenged11. A. submit B. spare C. bargain D. hide12. A. figure out B. get hold of C. give away D. take charge of13. A. financial B. reasonable C. incredible D. special14. A. gradually B. apparently C. directly D. precisely15. A. comparisons B. parents C. efforts D. organizations16. A. energy B. thinking C. impression D. difference17. A. upset B. excited C. bound D. accessible18. A. delay B. faith C. danger D. hesitation19. A. control B. command C. knowledge D. storeD. sponsor20. A. win B. count C. note四、用单词的适当形式完成短文(共1题;共10分)7.阅读下面材料,在空白处填入适当的内容(一个单词)或括号内单词的正确形式。
Unit 5 PoemsⅠ.阅读理解A(2024·淮南市高三第一次模拟)Louise Gluck has been no stranger to awards over her long and storied career since her first publication in 1968. In 1993, she won the Pulitzer Prize for her collection of poems, The Wild Iris. And on Oct 8 (2024) she became the 16th woman to win the Nobel Prize in literature with the Nobel prizes first awarded in 1901.Gluck was honored “for her unmistakable poetic voice that, with plain and simple beauty, makes individual existence universal”. Often said to be an au tobiographical poet, drawing from the inner parts of her life, “Gluck seeks the universal,” Nobel Committee Chair Anders Olsson said in a statement.Gluck, 77, the author of 12 poetry collections, has been able to turn her life experiences into universal themes covering life, loss, and isolation. Because of this, readers have often found her poetry to be “dark”. However, there is much more than darkness in her voice, as noted by Olsson. “It is candid and also a voice full of humor and biting wit.” he said.For example, in her poem Snowdrops, she uses the coming of spring after winter to show rebirth of life after death. She leads readers down a depressing path only to reconnect with the light at the near end. At the conclusion of the poem, readers are left t o feel the “raw wind of the new world” as they watch a new spring. This is often the case in Gluck's poetry, being able to feel joy even after not having done so for a long time.When her work Faithful Virtuous Night received a National Book Award for Poetry in 2014, a judge for the award went on to say, the collection comes from “a world where darkness blurs (模糊) ordinarily sharp edges around the oppositions of our lives-loss and renewal, male and female, the living and the dead”.Talking of prizes, she ac knowledged that they can make “existence in the world easier” but did not amount to the immortality (永生) of a true artist. “I want to live after I die, in that ancient way.” she said. “And there's no way of knowing whether that will happen, and there will be no knowing, no matter how many blue ribbons have been used to cover my body.” The remark is in line with Olsson's description of Gluck's poetic voice as “candid and uncompromising” but frequently witty.语篇导读:本文是一篇说明文。
a r X i v :q u a n t -p h /0606231v 1 28 J u n 2006On the non-existence of a universal Hadamard gatePreeti ParasharPhysics and Applied Mathematics UnitIndian Statistical Institute203B T Road,Kolkata 700108Email:parashar@isical.ac.inAbstractWe establish the non-existence of a universal Hadamard gate for arbitrary un-known qubits,by considering two different principles;namely,no-superluminal sig-nalling and non-increase of entanglement under LOCC.It is also shown that these principles are not violated if and only if the qubit states are of the special form obtained in our recent work [IJQI (in press),quant-ph/0505068].Keywords:Hadamard gate,no-signalling,non-increase of entanglement.PACS:03.67.Mn;03.67.Hk The Hadamard gate is a one qubit unitary operator which has played a very crucial role in the developement of quantum algorithms [1,2,3].It rotates the computational basis (CB)states |0 and |1 by creating an equal superposition of the amplitudes,and the new states so obtained are orthogonal to each other.Can this action of the Hadamard gate be generalized to any arbitrary unknown qubit state?It was proved in [4]using unitarity of the evolution,that there does not exist a Hadamard gate for a completely arbitrary qubit state.In other words,the Hadamard gate is not universal.Then the natural question to ask is:What is the most general class of states for which it is possible to design this gatein a universal manner?We endeavored to address this aspect in our recent investigation[5]where a special ensemble of qubits was obtained.The Hadamard gate holds for each and every state belonging to this ensemble.The restrictions imposed by the structure of quantum mechanics has led to several other impossible operations in quantum information theory;for example,the famous no-cloning theorem [6]and the no-deleting principle [7].There have also been attempts to derive them by applying some other fundamental principles of nature,like no-faster-than-light communication between spatially separated parties [8,9,10,11]and preservation of entanglement for closed systems under local operations [12].Another important no-go theorem is the non-existence of a universal flipping operator (NOT gate)[13]which would take an arbitrary qubit state to its orthogonal complement.An alternative proof of this was1recently given in [14]fromthe constraint of no-signalling and also from the consideration that the amount of entanglement shared between two spatialy separated parties cannot be increased by local operations and classical communication (LOCC).These pursuits serve as the chief motivation to undertake the present investigation.The purpose of this communication is two-fold.Firstly,we prove the non-existence of a universal Hadamard gate by imposing (separately)the two fundamental physical principles mentioned above;namely,(i )the no-superluminal signalling condition of special relativity,and (ii )non-increase of entanglement under LOCC.Secondly,we show that as a conse-quence of non-violation of these two laws,the qubit states must be of a particular type.This gives the largest set of states for which the Hadamard gate is valid,and matches exactly with the result derived in [5]from an altogether different consideration.Let us take the CB states |0 ,|1 and a third state |ψ which is an arbitrary linear superposition of these two.Thus,|ψ =a |0 +b |1 ,where a and b are non-zero complex numbers satisfying the normalization condition a ∗a +b ∗b =1.We define the action of the unitary Hadamard operator H on these states as follows:H |0 =12(|0 +|1 ),H |1 =12(|0 −|1 ),H |ψ =12(|ψ +|ψ =b ∗|0 −a ∗|1 is the orthogonal complement of |ψ .The Hadamard gate is explicitly represented by the matrix H =12 111−1.The transformation of |ψ =12(|ψ −|2 |0 A |0 B +|1 A |ψ B +|2 A |1 B +|3 A |4[|0 0|+a |1 0|+b ∗|3 0|+a ∗|0 1|+|1 1|+b ∗|2 1|+b |1 2|+|2 2|−a ∗|3 2|+b |0 3|−a |2 3|+|3 3|].(3)Now Bob applies Hadamard transformation on his qubit in Eq(2)but does not communicate anything to Alice.The shared state thus changes to(I ⊗H )φAB =φ′AB =12[|0 |0 +|0 |1 +|1 |ψ +|1 |ψ ].(4)2After this operation,Alice’s new reduced density matrix becomes1ρ′A=tr B(ρ′AB)=ψ =α|0 −(α−iβ)|1 (along with|1 )is the set of orthogonal complements. These two sets formed nice trajectories when represented on the bloch sphere.Non-increase of entanglement under LOCC:Next,we show the non-validity of the Hadamard transformation(1)for a general qubit,by considering the fact that local operations and classical communication cannot increase the entanglement content of a quantum system.Unfortunately,the resource state shared earlier,cannot be used in this case.There is no change in entanglement before and after the Hadamard operation since the eigenvalues ofρA andρ′A are equal.Therefore,let us consider a different shared state which is of the form[14]|Φ AB=1√√state in the A:B cut since it can be written as|Φ AB=1√1+b∗b[|0 0|+b∗|0 1|+b|1 0|+b∗b|1 1|].(9)The eigenvalues of this matrix are0and1.Obviously,the amount of entanglement given by the van Neumann entropy is zero.Now Bob applies the trace preserving Hadamard transformation defined in(1)on the last particle(B2)in Eq(7),which results in the state|Φ′ AB=1N[|000 −|001 −|010 +|011+|10ψ +|104((a−a∗)2−(a+a∗)(b+b∗)).Since a and b are arbitrary,so in general,the above state is entangled in the A:B cut.This implies that entanglement has been created by local operation.However,we know that entanglement cannot be increased by local operations even if classical communication is allowed.Therefore,we conclude that Hadamard transformation of an arbitrary,unknown qubit is an invalid operation.Our next task is to derive the conditions under which the entanglement in the state would remain the same(zero in this case)before and after the application of the Hadamard gate.For this purpose we have to compare the eigenvalues of the respective density matrices on Alice’s side.So after Bob’s operationρ′A=1N [|0 0|+αa+αb2|1 0|+(α2a+α2b+β2b−αaαb)|1 1|],(12)where N=1+α2a+α2b+β2b−αaαb.The eigenvalue equation of the above matrix gives two roots:λ±=1(N−2)2+(αa+αb)24(αa−αb)2.(14)4But sinceαa andαb are both real,so the squared term on r.h.s.will always be positive. This implies thatβb is imaginary.However,we know thatβb is also real.Therefore,the only possible solution is thatβb=0.Substituting this back in(14)yieldsαa=αb.We have thus,rederived the restrictionsαa=αb andβb=0from the principle of non-increase of entanglement under LOCC.In conclusion,we have shown,by considering two different physical principles,that the Hadamard transformation for completely arbitrary unknown qubits is an invalid operation. The Hadamard gate exists if and only if the state belongs to the special ensemble(6). Interestingly,quantum mechanics and no-signalling condition gives exactly the same set of states for a valid Hadamard operation.This bears similarity with optimalfidelity of a qubit[13,8],the value of which turns out to be exactly the same by these two different considerations.Since the Hadamard gate,just like the NOT gate,is allowed for a certain class of states on the bloch sphere,it imposes a weaker constraint on the quantum system than the no-cloning and no-deleting operations.It is a pleasure to thank G.Kar for useful discussions.References[1]D.Deutsch,Proc.Royal Society of London A425,73,(1989).[2]D.Deutsch and R.Jozsa,Proc.Royal Society of London A439,553,(1992).[3]P.W.Shor,Proc.35th Annual Symp.on Found.of Comp.Sc.,IEEE Press,LosAlamitos,CA(1994).[4]A.K.Pati,Phys.Rev.A66,062319,(2002).[5]A.Maitra and P.Parashar,to appear in IJQI(2006),arXiv:quant-ph/0505068.[6]W.K.Wootters and W.H.Zurek,Nature299,802(1982).[7]A.K.Pati and S.Braunstein,Nature404,164(2000).[8]N.Gisin,Phys.Lett.A242,1(1998).[9]L.Hardy and D.D.Song,Phys.Lett.A259,331(1999).[10]A.K.Pati,Phys.Lett.A270,103(2000).[11]A.K.Pati and S.Braunstein,Phys.Lett.A315,208(2003).[12]M.Horodecki,R.Horodecki,A.Sen(De)and U.Sen,quant-ph/0306044.[13]V.Buzek,M.Hillery and R.F.Werner,Phys.Rev.A60,R2626(1999).[14]I.Chattopadhyay,S.K.Choudhary,G.Kar,S.Kunkri and D.Sarkar,Phys.Lett.A351,384(2006).5。