An atomistic study into the defect chemistry of hexagonal barium titanate

高三英语学术论文的阅读单选题40题1. The term "phenomenon" in this academic paper can be best described as:A. an eventB. a theoryC. a personD. a place答案：A。

本题考查“phenomenon”这个词的含义。

在学术语境中，“phenomenon”通常指的是“现象、事件”，A 选项符合其常见释义。

B 选项“theory”意为“理论”；C 选项“person”指“人”；D 选项“place”表示“地方”，均不符合该词在此处的语境。

2. In the scientific article, the word "hypothesis" is most likely to mean:A. a conclusionB. a guessC. a factD. a method答案：B。

“hypothesis”常见释义为“假设、猜测”，B 选项符合。

A 选项“conclusion”是“结论”；C 选项“fact”是“事实”；D 选项“method”是“方法”，都不符合该词在学术论文中的意思。

3. The word "empirical" in the research paper is related to:A. theoretical ideasB. practical evidenceC. personal opinionsD. imagined situations答案：B。

“empirical”意思是“基于经验的、实证的”，与“practical evidence”（实际证据）相关，B 选项正确。

A 选项“theoretical ideas”是“理论想法”；C 选项“personal opinions”是“个人意见”；D 选项“imagined situations”是“想象的情况”，均不符合。

高三英语学术成果单选题50题1. In the scientific research paper, the new discovery was described as "a ______ breakthrough that could change the future of medicine."A. crucialB. criticalC. acuteD. severe答案：A。

本题考查词汇辨析。

crucial表示至关重要的，在描述突破对医学未来的影响时，表达其关键重要性；critical也有批判的、关键的意思，但更多用于批判性的情况或危机时刻，在这里不如crucial合适；acute主要指尖锐的、敏锐的或者急性的（疾病等），与语境不符；severe表示严重的，多形容程度恶劣，不适用于描述突破的重要性。

2. The history article mentioned that during the war, the city faced a ______ shortage of food.A. severeB. strictC. rigidD. stern答案：A。

解析：severe表示严重的，用来形容食物短缺的程度非常严重，符合语境；strict侧重于严格的，常指规定、纪律等严格；rigid表示僵硬的、死板的，多形容物体或者规则缺乏灵活性；stern主要指严厉的，多形容人的态度，这三个选项均不符合食物短缺的语境。

3. In the literary analysis, the author's use of symbolism was very ______, adding deep meaning to the story.A. subtleB. delicateC. faintD. weak答案：A。

答案解析：subtle表示微妙的、隐晦的，在文学分析中，作者对象征手法的使用很微妙，给故事增添深意，是合适的表达；delicate指精致的、娇弱的，更多形容物体的外观或者人的身体状况等；faint表示微弱的、模糊的，多形容声音、光线等；weak表示虚弱的、薄弱的，不适合形容象征手法的运用。

高三化学有机英语阅读理解20题1<背景文章>Organic chemistry is a fascinating and important branch of chemistry that focuses on the study of carbon - containing compounds. Among the many aspects of organic chemistry, reaction types play a crucial role.One of the fundamental reaction types is the addition reaction. In an addition reaction, two or more molecules combine to form a single product. For example, in the addition of hydrogen to an alkene, which is called hydrogenation. The reaction condition usually requires a catalyst, such as platinum or nickel. This reaction is widely used in the food industry to convert unsaturated fats (which have double bonds) into saturated fats.Substitution reaction is another significant type. In a substitution reaction, an atom or a group of atoms in a molecule is replaced by another atom or group of atoms. For instance, the reaction between methane and chlorine in the presence of ultraviolet light. Here, a hydrogen atom in methane is substituted by a chlorine atom. The reaction condition of ultraviolet light is essential to initiate this reaction. This type of reaction is often seen in the synthesis of various organic compounds.Another important reaction is the elimination reaction. In an elimination reaction, a small molecule is removed from a larger molecule,resulting in the formation of a double bond or a triple bond. For example, in the dehydration of an alcohol to form an alkene. Usually, a strong acid is used as a catalyst in this reaction.These reaction types are not only important in theoretical study but also have wide - ranging applications in industries such as pharmaceuticals, plastics, and agriculture.1. <问题1>What is the main feature of an addition reaction?A. One molecule breaks into two or more products.B. Two or more molecules combine to form a single product.C. A molecule exchanges its atoms with another molecule.D. A small molecule is removed from a larger molecule.答案：B。

兰州“PEP”2024年10版小学4年级英语第五单元真题试卷[有答案]考试时间：80分钟（总分:100）A卷考试人：_________题号一二三四五总分得分一、综合题(共计100题共100分)1. 听力题：The sun is shining ___ (brightly/dimly).2. 选择题：What do we call the study of fungi?a. Mycologyb. Botanyc. Zoologyd. Ecology答案:a3. 填空题：古代的________ (artifacts) 帮助我们了解人类的历史。

4. 听力题：The _____ (soup) is hot.5. 听力题：My uncle is a ________.6. 听力题：An electromagnet is created by running electricity through a ______.7. 填空题：An oak tree is a type of ______ (树).8. 听力题：The chemical formula for sodium oxalate is ______.9. 填空题：The _____ (orchard) has many varieties of apples.Which fruit is known for having seeds on the outside?A. BananaB. StrawberryC. AppleD. Grape11. 听力题：Fats and oils are examples of organic _____ called lipids.12. ta Stone helped decode ________ (埃及象形文字). 填空题：The Rose13. 填空题：The ______ (水分保持) is key for healthy plants.14. 听力题：He is running very ___. (fast)15. 填空题：My aunt is going to have a __________ (宝宝) soon.16. 填空题：The ________ (水资源管理) is critical for sustainability.17. 选择题：What is the main ingredient in jelly?A. SugarB. FruitC. PectinD. Water答案:C18. 听力题：The ______ provides a habitat for many species.19. 听力题：Fossils are often found in layers of ______ rock.20. 选择题：What is the tallest mountain in the world?A. K2B. KilimanjaroC. Mount EverestD. Denali答案:CThe ________ (潮汐) affects the oceans.22. 听力题：She is _______ (whispering) a secret to her friend.23. 选择题：Which of these is a flying mammal?A. BatB. SquirrelC. FrogD. Lizard24. 填空题：My friend is a _____ (心理学家) who helps children.25. 填空题：My best friend and I love to _______ (动词) together. 我们的友谊很 _______ (形容词).26. 填空题：This boy, ______ (这个男孩), is working on a science project.27. 听力题：Chemical bonds hold _______ together in a molecule.28. 填空题：古代的________ (records) 帮助我们理解人类的发展。

大学生总是专注于一个特定的学科的英语作文University students always focus on a specific subjectIn today's highly competitive world, university students often choose to specialize in a specific subject in order to excel in their chosen field. This trend has become increasingly common, as students recognize the benefits of focusing their time and energy on a specific area of study.One of the main reasons why university students choose to specialize in a specific subject is the desire to gain in-depth knowledge and expertise in that particular area. By focusing on a specific subject, students are able to delve deeper into the complexities of their chosen field, gaining a thorough understanding of the subject matter. This specialized knowledge can give students a competitive edge in their future careers, as employers are often seeking individuals who have specialized expertise in a particular area.Furthermore, specializing in a specific subject allows students to develop valuable skills that are directly related to their chosen field. For example, a student specializing in computer science will gain practical experience in programming languages and software development, while a studentspecializing in psychology will develop skills in research methods and data analysis. These skills are not only relevant to the student's academic studies but also transferable to the workplace, making them more marketable to potential employers.In addition, focusing on a specific subject can help students to identify their passions and interests, enabling them to pursue a career that aligns with their goals and aspirations. By immersing themselves in a particular area of study, students can gain a deeper understanding of what they enjoy and excel at, leading them to make more informed decisions about their future career path.Despite the benefits of specializing in a specific subject, there are also potential drawbacks to this approach. One potential downside is that students may miss out on the opportunity to explore different areas of study and develop a broad range of skills. This can limit their career options and make them less adaptable to changes in the job market. Additionally, students who focus solely on a specific subject may become too narrowly focused, missing out on the opportunity to develop interdisciplinary skills and perspectives that can be beneficial in the workplace.In conclusion, while there are both advantages and disadvantages to specializing in a specific subject as a university student, it is clear that this trend is becoming increasingly prevalent in today's competitive academic and professional landscape. By focusing on a specific subject, students can gain in-depth knowledge, develop valuable skills, and identify their passions and interests, all of which can help them to succeed in their future careers. However, it is important for students to strike a balance between specialization and exploration, in order to ensure that they are well-rounded individuals who are prepared for the challenges of the modern workforce.。

高三英语学术文章单选题50题1. In the scientific research paper, the term "hypothesis" is closest in meaning to _.A. theoryB. experimentC. conclusionD. assumption答案：D。

解析：“hypothesis”的意思是假设，假定。

“assumption”也表示假定，假设，在学术语境中，当提出一个假设来进行研究时，这两个词意思相近。

“theory”指理论，是经过大量研究和论证后的成果；“experiment”是实验，是验证假设或理论的手段；“conclusion”是结论，是研究之后得出的结果，所以选D。

2. The historical article mentioned "feudal system", which refers to _.A. democratic systemB. hierarchical social systemC. capitalist systemD. modern political system答案：B。

解析：“feudal system”是封建制度，它是一种等级森严的社会制度。

“democratic system”是民主制度；“capitalist system”是资本主义制度；“modern political system”是现代政治制度，与封建制度完全不同概念，所以选B。

3. In a literary review, "metaphor" is a figure of speech that _.A. gives human qualities to non - human thingsB. compares two different things without using "like" or "as"C. uses exaggeration to emphasize a pointD. repeats the same sound at the beginning of words答案：B。

2022年考研考博-考博英语-西南林业大学考试全真模拟易错、难点剖析B卷（带答案）一.综合题(共15题)1.单选题By being over-zealous with food restriction, the dieter inadvertently makes a binge on forbidden foods far more likely and you may as well forget the idea of banning things.问题1选项A.may properlyB.had betterC.should surelyD.may probably【答案】B【解析】A选项may properly “适当地”；B选项had better “最好”；C选项should surely “应该”；D选项may probably “也许可能”。

句意：过度热衷于限制食物，节食者很可能会无意中暴饮暴食，你最好还是忘记禁食的想法。

结合此处关键词may as well “最好”，得知B为正确答案。

2.单选题Many scientists remain skeptical about the value of this research program.问题1选项A.consciousB.doubtfulC.noveltyD.obscure【答案】B【解析】考查形容词词义辨析。

A选项conscious “意识到的；故意的；神志清醒的”；B选项 doubtful “可疑的；令人生疑的；疑心的；不能确定的”；C选项novelty “新奇；新奇的事物；新颖小巧而廉价的物品”；D选项 obsc ure “昏暗的，朦胧的；晦涩的，不清楚的；隐蔽的；不著名的，无名的”。

句意：许多科学家对这个研究项目的价值仍持怀疑态度。

结合此处关键词skeptical “怀疑的”，得知B 选项正确。

3.单选题He tops among the best car racing of the past fifty years.问题1选项A.projectsB.showsC.displaysD.rates【答案】D【解析】考查名词词义辨析。

2022年考研考博-考博英语-中国科学技术大学考试全真模拟易错、难点剖析AB卷（带答案）一.综合题(共15题)1.单选题The Romans were hardworking and frugal, self-reliant, serious about their responsibilities and steadfast in the face of adversity.问题1选项A.economicalB.cautiousC.courageousD.righteous【答案】A【解析】【选项释义】A. economical 节俭的，节约的B. cautious 小心的，谨慎的C. courageous 勇敢的，无畏的D. righteous 公正的，正直的【答案】A【考查点】形容词辨析。

【解题思路】frugal的意思为“（对金钱、食物等）节约的，节俭的”，用来形容the Romans，指的是罗马人很勤俭节约，economical与之词义相近，因此A选项正确。

【干扰项排除】B、C、D选项词义与之不符。

【句意】罗马人勤劳节俭，自力更生，认真履行他们的责任，面对逆境也坚定不移。

2.单选题He has admitted to making a blunder by loading up on this stock during the 2008 oil boom, and just before the stock-market crash.问题1选项A.errorB.riskC.fortuneD.deal【答案】A【解析】【选项释义】A. error 错误，差错B. risk 危险，风险C. fortune 机会，运气D. deal 协议，（尤指）交易【答案】A【考查点】名词辨析。

【解题思路】blunder的意思为“愚蠢（或粗心）的错误”，指的是在不恰当的时间囤积了股票，这是一个错误，error与之词义相近，因此A选项正确。

高三英语学术研究英语单选题30 题1. In academic research, when we refer to a detailed examination and analysis of a subject, we often use the term ____.A. scrutinyB. glanceC. peekD. glimpse答案解析：A。

本题考查学术词汇辨析。

A选项“scrutiny”表示仔细的审查、详细的研究，常用于学术研究场景中，表示深入的分析和考察。

B选项“glance”表示匆匆一瞥，是很短暂、不深入的看，不符合学术研究深入探究的要求。

C选项“peek”也是偷看、窥视的意思，同样表示短暂、不正式的看，与学术研究的严谨性不符。

D选项“glimpse”指的是瞥见，短暂地看到，不能表达学术研究中详细考察分析的含义，所以正确答案是A。

2. The ____ of this research is to find out the correlation between climate change and species extinction.A. aimB. goalC. objectiveD. target答案解析：C。

这几个词都有目标的意思。

A选项“aim”比较口语化，在学术研究语境中不如“objective”正式。

B选项“goal”更多侧重于经过努力想要达成的最终结果，强调结果性。

C选项“objective”常用于学术研究，表示研究的目的，是比较正式的用法。

D选项“target”更多表示想要达到的具体的指标或者对象，比如射击的靶子等，这里强调研究目的，所以C更合适。

3. In an academic paper, the ____ section usually contains a summary of the research findings.A. conclusionB. endingC. finaleD. close答案解析：A。

高三英语科学前沿动态引人关注单选题30题1.Scientists are studying a new kind of particle which is called a(n)_____.A.electronB.protonC.neutronD.quark答案：D。

本题主要考查科学前沿动态中的专业术语。

electron 是电子；proton 是质子；neutron 是中子；quark 是夸克。

题干中提到一种新的粒子，夸克在科学前沿动态中相对更可能是新研究的对象。

2.The latest research in astronomy focuses on a distant_____.A.starB.planetC.galaxyD.universe答案：C。

题干中提到天文学最新研究，通常会聚焦在遥远的星系上。

star 是恒星；planet 是行星；galaxy 是星系；universe 是宇宙。

宇宙范围太大，一般不是直接聚焦对象，恒星和行星相对较常见，而星系在科学前沿动态中更有研究价值。

3.In the field of quantum physics, scientists study the behavior of_____.A.atomsB.moleculesC.electronsD.quanta答案：D。

在量子物理学领域，研究的是量子的行为。

atoms 是原子；molecules 是分子；electrons 是电子；quanta 是量子。

前三个选项比较基础，量子是量子物理中的专业术语。

4.The breakthrough in biotechnology is related to a new kind of_____.A.enzymeB.geneC.cellD.virus答案：B。

生物技术的突破通常与新的基因有关。

enzyme 是酶；gene 是基因；cell 是细胞；virus 是病毒。