徐闻中学2020届高二快班第14周晨练(十四)

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2020届湛江市徐闻县徐闻中学高三英语模拟试题及答案解析

2020届湛江市徐闻县徐闻中学高三英语模拟试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AI once taught in a small private school. Each morning at nine o’clock all the students, ranging in age from three to seven years old, gathered in the Great Room for a warm-up in preparation for the day.One morning the headmistress made an announcement to all the children gathered,“Today we begin a great experiment of the mind.” She held up two ivy(常春藤) plants, each potted in an identical container. She continued, “Do they look the same?”All the children nodded. So did I, for, in this way, I was alsoa child.“We will give the plants the same amount of light, the same amount of water, but not the same amount of attention,” She said. “Together we are going to see what will happen when we put one plant in the kitchen away from our attention and the other plant right here in this room. Each day for the next month, we shall sing to our plant in the Great Room and tell it how much we love it, and how beautiful it is. We will use our good minds to think good thoughts about it.”Four weeks later my eyes were as wide and disbelieving as the children’s. The kitchen plant was leggy and sick-looking, and it hadn’t grown at all. But the Great Room plant, which had been sung to and surrounded by positive thoughts and words, had increased threefold in size with dark leaves that were filled with energy.In order to prove the experiment, the kitchen ivy was brought to the Great Room to join the other ivy. Within three weeks, the second plant had caught up with the first ivy. Within four weeks, they could not be distinguished, one from the other.I took this lesson to heart and made it my own.1. Why did the headmistress do the experiment?A. She wanted to teach me a lesson.B. She expected the students to learn to grow plants.C. She meant to prove the impact of good minds on growth.D. She intended to show students how to save a sick-looking plant.2. What happened to the ivy in the kitchen at last?A. It stopped growing and died.B. It was leggy and sick with dark leaves.C. It looked almost the same as the other one.D. It grew better than the one in the Great Room.3. What can be a suitable title for the passage?A. Life Means GrowthB. Things Grow with LoveC. Equality Makes a DifferenceD. Positive Thoughts Really CountBIn the Hollywood industry, most of the studios are using AI to make movies for various reasons such as getting the actors out of danger, replacing the actors indifferent scenes, forming appealing atmosphere to enhance（增强）the views, etc.Directors and producers are using VFX (Visual effects), animations and AI to makea model that looks like the actor and replaces the actor's place. In particular, AI is used in scenes where actor shave to produce certain stunts （特技）to develop setups in the studio artificially. VFX is used to later change the internal studio backgroundsto a different place in the movie.There are many movies with two characters of the same actor. When AI was not a part of the film, editors used different methods to show the two aspects of the same actor in one scene, but now AI is being used to form the second character of the same actor and is being performed to the viewers.By a perfect combination of animation, VFX and AI, realistic models are being created. And the most fun part is the fictitious character can hold the face of the actor but the age, hairstyles, and clothing can be changed to create more enhanced looks according to the movie scene and story. With the help of AI, the directors recreating appealing scenes to enhance the thrill and excitement. InJurassic Park,no dinosaurs were running but with the help of AI and visual effects, we could enjoy the scenes and the atmospheres.The directors and the producers direct to form a green screen including the obstacles and those green screens get replaced with the views that are made from AI and VFX, and the actors make the scenes alive and deliver the most suitable action-packed movie scenes. This method also enhances the viewers' experience, which makes the movie a blockbuster（大片）.4. What does the author intend to tell us in paragraph 1?A. How AI helps actors.B. What AI brings to movies.C. Why AI is applied to movies.D. Where AI is made full use of.5. What can we infer from paragraph 3?A. AI can be used as an editor.B. Editors consider AI irreplaceable.C. Editors used many methods to replace AI.D. AI makes what used to be complex scenes easier.6. What's the author's attitude to using VFX, animations and AI in movies?A. Supportive.B. Sceptical.C. Unconcerned.D. Enthusiastic.7. Which of the following could be the best title for thetext?A. What AI Brings Out Hollywood MoviesB. Why AI Is Applied to Hollywood MoviesC. Which Hollywood Movies Make Much Use of AID. How AI Is Being Applied to Hollywood MoviesCIf you’ve ever had a dog, you know just how deep a connection you can develop with “man’s best friend”. But a dog has a much shorter life span — about 12 to 15 years long — than humans, which means every dog owner has to go through the heartbreaking moment when their loving pet passes away.Why not make a clone of that dog then? This is the solution offered by a South Korean company, Sooam Biotech Research Foundation. The company has successfully cloned at least 400 dogs, mostly for US customers, ever since it pioneered the technique in 2005. Now, Sooam Biotech is planning to introduce their business toUKdog owners, offering them dogs that look just like their lost ones.Meanwhile, another dog is selected to supply an egg.Researchers then replace the DNA in the egg with that from the skin cell and implant the egg into the womb (子宫) of a female dog. The egg grows into a puppy over the following two months. To clone a dog, researchers first need to take a skin cell from a living dog or one that has just died.The whole process takes less than a day, but it comes at a shockingly high price — around £63,000 (614,000 yuan). But if you can’t afford it now, you can also save the cells in a laboratory and access them at a later date. Justlike identical twins of humans, they share the exact same DNA but there will still be small differences between them. “The spots on a Dalmatian clone will be different, for example,” Insung Hwang, head of Sooam Biotech, toldThe Guardian. However, as magical as cloning might sound, there is no guarantee that the cloned dog will be a perfect replica of the original one.Dog owners will also have to accept the fact that personality is not “clone-able”. Apart from genes, personality is also determined by upbringing and environment, which are both “random elements [that] cloning technologies simply cannot overcome”, Professor Tom Kirkwood atNewcastle University,UK, toldThe Telegraph.Perhaps bringing our dogs back with cloning is not the best way to remember them after all.Kirkwood, a dog owner himself, pointed out: “An important aspect of our relationship with them is coming to terms with the pain of letting go.”8. According to the article, Sooam Biotech Research Foundation is ______.A. working on plans to help dog owners enjoy their pets longerB. offering a way to help dogs give birth to more puppiesC. providing a service that will make copies of pet dogsD. introducing a completely new technique to clone dogs9. Which of the following statements about dog cloning is TRUE according to the article?A. Dog cloning technology hadn’t been put into practice until recently.B. Dog cloning is very expensive and usually takes several months to complete.C. Dog cloning is very popular among US andUKpet owners.D. Cloned dogs might develop different habits and characteristics even though they look very similar.10. Which of the following shows the correct order of the dog cloning process?a. an egg is taken from another dogb. a skin cell is taken from the pet dog and saved in a laboratoryc. the egg is placed in the womb of a female dogd. the DNA of the egg is replaced by the DNA from the skin celle. the egg grows into a puppy in two monthsA. acbde.B. adbce.C. bacde.D. badce.11. We can learn from the article thatKirkwood______ dog cloning.A. disapproves ofB. supportsC. is afraid ofD. is curious aboutDAt any moment, about half the world’s population is wearing denim（牛仔布）clothes. But few realize tiny bits of denim have been adding up to a surprising amount of pollution in water, as a new study shows.Sam Athey, one of the study’s authors, says, “Even though denim is made of a natural material—cotton, it contains chemicals.” Cotton fibers were treated with many types of chemicals, she notes. Some improve its durability and feel. Others give denim its distinctive blue color1 .Athey and her team washed jeans and found that about 50,000 microfibers came off from each pair per wash. Not all of those fibers make their way into the environment. Wastewater treatment plants catch about 83 to 99 percent ofthem. Catching 99 percent may sound pretty good. But one percent of 50,000 is still 500 fibers per wash. And since every pair of jeans is washed again and again, it still adds up to lots of microfibers entering the water environment.Denim microfibers showed up in sediment（沉淀物）from the Great Lakes. More of these fibers polluted a series of shallow lakesin southern Ontario. They even turned up in sediment from the Arctic Ocean in northern Canada. The team found denim accounted for 12 to 23 percent of microfibers in the sediment. There were other microfibers too. But the team focused on denim because so many people wear jeans.“Everyone wears jeans so they could be our largest input of microfibers into our streams and soils,” Athey says. “An easy way to limit that is by washing our jeans less often.” Athey grew up thinking she should wash her jeans after wearing them every couple of times, but most jean companies recommend washing them no more than once a month. “The solution is not that you shouldn’t wear jeans,” she says. “We need to buy fewer denim clothes and only wash them when they truly need it.”12. Which of the following is TRUE according to the passage?A. Chemicals are contained in natural cotton.B. Chemicals can make denim color1 ful.C. Chemicals prevent fibers from falling.D. Chemicals can make the life of denim longer.13. What does the underlined word “them” in Paragraph 3 refer to?A. Denim.B. Sediment.C. Microfibers.D. Chemicals.14. What does the author mainly want to tell us through Athey’s words ?A. To avoid wearing jeans.B. To reduce denim consumption.C. To wash jeans more often.D. To limit input in denim production.15. In which section of a magazine might the text be found?A. Science.B. Entertainment.C. Tourism.D. Geography.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

徐闻县实验中学首届田径运动会秩序册

关于举办徐闻县实验中学首届田径运动会的通知各部门、各班级：为了全面贯彻落实党的教育方针，检阅我校群众性田径运动技术水准，推动我校群众性体育运动的发展，促进学生课余体育训练，增强学生的身心健康。

经校领导研究决定，实验中学首届田径运动会，于2012年11月29日-- 12月1日举行。

现将竞赛规程印发给各班，各部门，希望各班认真做好组队和训练工作，共同办好运动会。

一、参赛单位：以班为单位组队参赛。

二、比赛项目：高中男子：100米、200米、400米、800米、1500米、4X100米接力、跳高、跳远、实心球（2kg）。

高中女子：100米、200米、400米、800米、4 X100米接力、跳高、跳远、实心球（2kg）。

三、参加比赛办法：1、每班运动员10人（其中女生至少4人），每人可报2个单项（不含接力），同时各班在同一个项目中最多只能报3人。

2、径赛400米以下各单项取预赛前六名参加决赛四、运动员资格：学习努力，思想质量好，身体健康者，有正式实验中学学籍的在读生方可参加（往届补习生不准参加），各班严格审查运动员资格，如发现弄虚作假者取消其比赛资格，扣该班团体总分20分，并点名批评。

五、报名办法：以班为单位，于11月5日前将报名表送任课体育老师处，名单一经报出，不得更改，逾期不报者，作不参赛论，并扣该班当周“双优”分30分。

六、录取名次及奖励：各单项奖励前6名，如不足6人参赛，名次减1录取，不足3人该项不设比赛。

团体总分高中组奖前八名，如积分相等以获得单项第1名多者列前，如此类推。

同时，团体总分前八名，奖励该班当周“双优”分为18、14、12、10、8、6、4、2分。

七、比赛规则：比赛采用中国田径协会审定的最新田径竞赛规则。

八、其它：1、运动会期间，开展体育道德风尚评比活动。

2、每班各派出一名身体健康责任心较强的同学担任校运会裁判工作。

入场式口号1、发展体育运动，增强人民体质。

2、磨砺成才，报效祖国。

3、好好读书，认真锻炼。

广东省湛江市徐闻县徐城中学2020年高二语文期末试卷含解析

广东省湛江市徐闻县徐城中学2020年高二语文期末试卷含解析一、现代文阅读（35分，共3题）1. 阅读下面的文字，完成下列小题。

材料一:党的十八届五中全会10月29日在北京胜利闭幕，会议审议通过了《中共中央关于制定国民经济和社会发展第十三个五年规划的建议》。

全会及其通过的《建议》提出了全面建成小康社会的新目标，首次提出创新、协调、绿色、开放、共享五大发展理念，为中国“十三五”乃至更长时期的发展描绘出新蓝图。

“十三五’规划是党的十八大把生态文明纳入‘五位一体’总布局后的首个五年规划，公报将“生态环境质量总体改善’列入全面建成小康社会的新目标，并用很重的篇幅强调坚持绿色发展，释放出党中央努力建设美丽中国的决心和信心。

”清华大学经济管理学院教授白重恩说。

(摘编自《新华网》)材料二:8月4日，中央电视台开始在新闻联播节目推出《塞罕坝生态文明建设范例启示录》系列报道。

报道称，塞罕坝主动修复生态，践行“绿水青山就是金山银山”的理念，是生态文明建设的一个活标本。

三代人用了55年的时间，将昔日飞乌不栖、黄沙遮天的荒原，变成百万亩人工林海。

塞罕坝林场的林地面积，由建场前的24万亩增加到目前的112万亩，成为世界上面积最大的一片人工林。

森林覆盖率由12%提高到80%。

今天的塞罕坝，绿水青山带来真金白银，绿色发展之路越走越宽。

郁郁葱葱的林海，成为林场生产发展、职工生活改善、周边群众脱贫致富的“绿色银行”。

(摘自《人民日报》)材料三:中新网北京8月8日电(记者张尼)日前，第四批中央环境保护督察全面启动，督察组将分别进驻吉林、浙江、山东等8省份，这也标志着中央环保督察将实现对31省份的全覆盖。

此前批次的督察中，已有上万人被问责。

新一轮督察风暴又将揪出哪些环保“顽疾”引发外界关注。

从另一组数字上也能看出中央环保督察取得的成效。

环保部副部长黄润秋近日透露，此前的中央环保督察中，初步罚款约8．8亿元，立案侦查1183件，拘留1103人，约谈13593人，问责11390人，切实推动解决了一大批环境问题，增强了人民群众获得感。

2020-2021学年广东省湛江市徐闻县徐城中学高二数学文月考试题含解析

2020-2021学年广东省湛江市徐闻县徐城中学高二数学文月考试题含解析一、选择题：本大题共10小题，每小题5分，共50分。

在每小题给出的四个选项中，只有是一个符合题目要求的1. 双曲线的渐近线方程是 ( )、、、、参考答案：A略2. 用秦九韶算法计算多项式在时的值时,的值为参考答案：C略3. 已知函数，集合只含有一个元素，则实数的取值范围是（）A. B. C. D.参考答案：B略4. 已知，则的值等于（）A． B．1 C．2 D．3参考答案：DD略6. 复数是纯虚数，则实数的值为A．3 B ．0 C ．2 D ．3或2ks5u参考答案：C略7. 已知等比数列{a n }中，，，则（）A ．±2B ．－2C ．2D ．4参考答案：C因为等比数列中，，，所以，，即，，因此，因为与同号，所以，故选C．8. 正三棱锥的底面边长为2，侧面均为直角三角形，则此棱锥的体积为（）A、；B、；C、；D、参考答案：A略9. 已知抛物线x2=2py（p＞0）的焦点为F，过点F且倾斜角为150°的直线l与抛物线在第一、二象限分别交于A，B两点，则（）A．3 B．C．D．参考答案：A【考点】抛物线的简单性质．【分析】设直线l的方程为：x=﹣（y﹣），代入抛物线方程，求得A和B坐标，由抛物线的焦点弦公式，即可求得的值．【解答】解：设A（x1，y1），B（x2，y2），直线l的方程为：x=﹣（y﹣）则：，消去x可得12y2﹣20py+3p2=0，点A在第一象限，解得：y1=，y2=，∴===3，故选A．10. 垂直于直线且与圆相切于第一象限的直线方程是（）A．B．C．D．参考答案：A二、填空题:本大题共7小题,每小题4分,共28分11. 圆心在直线x﹣2y=0上的圆C与y轴的正半轴相切，圆C截x轴所得弦的长为2，则圆C的标准方程为．参考答案：（x﹣2）2+（y﹣1）2=4考点：圆的标准方程．专题：直线与圆．分析：由圆心在直线x﹣2y=0上，设出圆心坐标，再根据圆与y轴相切，得到圆心到y轴的距离即圆心横坐标的绝对值等于圆的半径，表示出半径r，由弦长的一半，圆的半径r及表示出的d利用勾股定理列出关于t的方程，求出方程的解得到t的值，从而得到圆心坐标和半径，根据圆心和半径写出圆的方程即可．解答：解：设圆心为（2t，t），半径为r=|2t|，∵圆C截x轴所得弦的长为2，∴t2+3=4t2，∴t=±1，∵圆C与y轴的正半轴相切，∴t=﹣1不符合题意，舍去，故t=1，2t=2，∴（x﹣2）2+（y﹣1）2=4．故答案为：（x﹣2）2+（y﹣1）2=4．点评：此题综合考查了垂径定理，勾股定理及点到直线的距离公式．根据题意设出圆心坐标，找出圆的半径是解本题的关键．12. 函数f（x）=（x2+x+1）e x（x∈R）的单调减区间为．参考答案：（﹣2，﹣1）（或闭区间）【考点】利用导数研究函数的单调性．【分析】对函数f（x）=（x2+x+1）e x（x∈R）求导，令f′（x）＜0，即可求出f（x）的单调减区间．【解答】解：∵函数f（x）=（x2+x+1）e x，∴f′（x）=（2x+1）e x+e x（x2+x+1）=e x（x2+3x+2）要求其减区间，令f′（x）＜0，可得e x（x2+3x+2）＜0，解得，﹣2＜x＜﹣1，∴函数f（x）的单调减区间为（﹣2，﹣1），故答案为（﹣2，﹣1）．【点评】解此题的关键是对函数f（x）的导数，利用导数求函数的单调区间是比较简单的．13. 100以内的正整数有个能被7整除的数．参考答案：14它们分别为，共计14个.14. 将一颗骰子先后抛掷2次，以第一次向上点数为横坐标x，第二次向上的点数为纵坐标y的点（x，y）在圆x2+y2=9的内部的概率为．参考答案：【考点】列举法计算基本事件数及事件发生的概率．【专题】计算题；对应思想；定义法；概率与统计．【分析】由题意知本题是一个古典概型，试验发生包含的所有事件总数为36，满足条件的事件可以通过列举得到事件数，根据古典概型公式得到结果．【解答】解：由题意知本题是一个古典概型，试验包含的所有事件总数为36，满足条件的事件有（1，1），（1，2），（2，1），（2，2），共有4种结果，记点（x，y）在圆x2+y2=9的内部记为事件A，∴P（A）==，即点（x，y）在圆x2+y2=9的内部的概率，故答案为【点评】本题是一个古典概型问题，这种问题在高考时可以作为文科的一道解答题，古典概型要求能够列举出所有事件和发生事件的个数，本题可以列举出所有事件，是一个基础题．15. 如果平面α∥平面β且直线l⊥α，那么直线l与平面β的位置关系是．参考答案：l⊥β【考点】平面的基本性质及推论．【分析】由已知中平面α∥平面β且直线l⊥α，根据面面平行的几何特征及线面垂直的判定方法，易得到直线l⊥平面β，得到答案．【解答】解：∵平面α∥平面β又∵直线l⊥平面α故直线l⊥平面β故答案为：l⊥β16. 已知等差数列的首项及公差都是整数，前项和为，若，设的结果为。

湛江市徐闻中学2025届高三二诊模拟考试英语试卷含解析

湛江市徐闻中学2025届高三二诊模拟考试英语试卷请考生注意：1．请用2B铅笔将选择题答案涂填在答题纸相应位置上，请用0．5毫米及以上黑色字迹的钢笔或签字笔将主观题的答案写在答题纸相应的答题区内。

写在试题卷、草稿纸上均无效。

2．答题前，认真阅读答题纸上的《注意事项》，按规定答题。

第一部分（共20小题，每小题1.5分，满分30分）1．“It might have saved me a lot of money”, Mr. Chen sighed, “________ timely from the stock market this July”. A．did I withdraw B．should I withdrawC．have I withdrawn D．had I withdrawn2．How did it come about ________ a quiet person should appear so wild today?A．whether B．that C．if D．what3．Throughout history, China never colonized any nation. _________ this peaceful tradition, it is committed to building a community with a shared future for mankind.A．In line with B．In regard toC．In harmony with D．In addition to4．—This is the first time I ________ my picture with my own hands.—It is time that you ________ a picture for me.A．have taken; took B．took; should takeC．took; will take D．will take; have taken5．—Amazing! You wear slippers at work.—Don’t you know it’s a fashion?A．must B．should C．can D．may6．To combat global warming, many people are _________ the use of alternative energy sources.A．applying to B．jumping at C．dipping into D．pushing for7．The room is so clean. He ________ have cleaned it yesterday evening.A．will B．needC．can D．must8．Internet shopping is really ________ when people are sure of its safety and security.A．taking off B．taking upC．setting off D．setting up9．Though the story of Li Yunlong in the TV drama “Bright Sword” is a fiction, much of __________happened is historically true.A．that B．what C．which D．it10．—Are you doing your homework？—No, I’m writing a short play．It _____ at the Christmas party．A．will be put on B．will put onC．puts on D．is put on11．The old bank, _____ appearance is not a pretty sight, is extremely beautiful on the inside.A．whose B．whereC．when D．which12．According to the company’s rule, one’s payment is ______ the work done, not to the time spent doing it.A．in proportion to B．in addition toC．in contrast to D．in regard to13．Following the girl, we went into a hall; on __________ walls hung a few pictures of some famous scientists. A．its B．whichC．whose D．those14．What he liked to do was to take an idea and ______ it by finding every possible consequence.A．squeeze B．wrestleC．switch D．shrink15．—I have been considering cancelling the project because it seems hard to go farther.—But it's too early to________ now. There's still much hope.A．pick up the pieces B．throw in the towelC．go through your paces D．jump down your throat16．With your brother’s help, I’ve made great progr ess in English and I really want to do something for him ____．A．in turn B．by turns C．in return D．in answer17．﹣Mom，I'll stay in to accompany my grandpa this evening．﹣________!A．With pleasure B．Never mindC．Suit yourself D．It depends18．We are so tired. ______ we could take the day off tomorrow!A．Only ifB．What ifC．If onlyD．If so19．The guidance teacher was their adviser, offering them suggestions and solutions when they ______ difficulties. A．arose B．encounteredC．emerged D．evaluated20．—Why are you so late?—The driver couldn’t see clearly because of the fog．____, the road was too icy．A．Therefore B．Otherwise C．However D．Besides第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。

2020年广东省湛江市徐闻县徐城中学高三物理上学期期末试卷含解析

2020年广东省湛江市徐闻县徐城中学高三物理上学期期末试卷含解析一、选择题：本题共5小题，每小题3分，共计15分．每小题只有一个选项符合题意1. 如图所示，在真空中有两个带正电的点电荷，分别置于M、N两点。

M处正电荷的电荷量大于N处正电荷的电荷量，A、B为M、N连线的中垂线上的两点。

现将一负点电荷g 由A点沿中垂线移动到B点，在此过程中，q的电势能A.逐渐减小B.逐渐增大C.先增大后减小D.先减小后增大参考答案：A2. 如图所示，将质量为m的小球以速度v0由地面竖直向上抛出。

小球落回地面时，其速度大小为。

设小球在运动过程中所受空气阻力的大小不变，则空气阻力的大小等于A．B．C．D．参考答案：D3. 建筑工人用图所示的定滑轮装置运送建筑材料。

质量为70.0kg的工人站在地面上，通过定滑轮将20.0kg的建筑材料以0．500m／s2的加速度拉升，忽略绳子和定滑轮的质量及定滑轮的摩擦，则工人对地面的压力大小为(g取lO m／s2)A．510 N B．490 NC．890 N D．910 N参考答案：B解析：对建筑材料进行受力分析根据牛顿第二定律有,得绳子的拉力大小等于F=210N，然后再对人受力分析由平衡的知识得,得F N=490N,根据牛顿第三定律可知人对地面间的压力为490N.B对。

4. “辽宁号”航空母舰，由中国在前苏联废弃航母“瓦良格”号的基础上改造而来的。

“辽宁号”航空母舰飞行甲板长为300m，若该航母上所配的苏—3型舰载战斗机在飞行甲板上所能达到的最大加速度为1.5m/s2,该战斗机安全起飞的最小速度为50m/s，为保证该战斗机安全起飞，应使航母匀速运动，则航母匀速运动的速度最小值为（）A.10m/sB.20m/sC.30m/sD.40m/s参考答案：B5. （2014春?宜川县校级期末）如图所示，固定的锥形漏斗内壁是光滑的，内壁上有两个质量相等的小球A和B，在各自不同的水平面做匀速圆周运动，以下说法正确的是（）A. V A＞V BB. ωA＞ωBC. a A＞a BD. 压力N A＞N B参考答案：A解：研究任意一个小球：受力如图．将F N沿水平和竖直方向分解得：F N cosθ=ma…①F N sinθ=mg…②．由②可知支持力相等，则A、B对内壁的压力大小相等：N A=N B．根据牛顿第二定律，合外力提供向心力，合外力相等，则向心力相等．由①②可得：mgcotθ=ma=m=mω2r．可知半径大的线速度大，角速度小．则A的线速度大于B的线速度，V A＞V B，A的角速度小于B的角速度，ωA＜ωB．向心加速度a=gcotθ，则知两球的向心加速度相等，a A=a B．故A正确，B、C、D错误．故选：A．二、填空题：本题共8小题，每小题2分，共计16分6. （单选）沿直线运动的汽车刹车后匀减速运动，经过3.5s停止，它在刹车开始后的1s内、2s内、3s内的位移之比（）A．3：2：1 B．3：5：6 C．9：4：1 D．5：3：1参考答案：B解析：画示意图如图所示，把汽车从A→E的末速度为0的匀减速直线运动，逆过来转换为从E→A的初速度为0的匀加速直线运动，来等效处理，由于逆过来前后，加速度相同，故逆过来前后的运动位移、速度时间均具有对称性．所以知汽车在相等时间内发生的位移之比为1：3：5：…，把时间间隔分为0.5 s．所以xDE：xCD：xBC：xAB=1：8：16：24，所以xAB：xAC：xAD=3：5：6．故选项B正确．故选：B7. 如图，用长度为L的轻绳悬挂一质量为 M 的小球（可以看成质点），先对小球施加一水平作用力F ，使小球缓慢从A运动到B点，轻绳偏离竖直方向的夹角为θ。

广东省湛江市第十四中学2020年高二物理模拟试卷含解析

广东省湛江市第十四中学2020年高二物理模拟试卷含解析一、选择题：本题共5小题，每小题3分，共计15分．每小题只有一个选项符合题意1. 在可控核反应堆中需要给快中子减速，轻水、重水和石墨等常用作减速剂。

中子在重水中可与核碰撞减速，在石墨中与核碰撞减速。

上述碰撞可简化为弹性碰撞模型。

某反应堆中快中子与静止的靶核发生对心正碰，通过计算说明，仅从一次碰撞考虑，用重水和石墨作减速剂，哪种减速效果更好？参考答案：解得：在重水中靶核质量：m H＝2m n在石墨中靶核质量：m c＝12m n与重水靶核碰后中子速度较小，故重水减速效果更好。

2. （单选题）通电导体发热的规律是由下列哪位物理学家总结的（）A．欧姆 B．焦耳 C．安培 D．法拉第参考答案：B3. （多选）如图所示，实线为方向未知的三条电场线，a、b两带电粒子从电场中的O点以相同的初速度飞出。

仅在电场力作用下，两粒子的运动轨迹如图中虚线所示，则A. a一定带正电，b一定带负电B. a加速度减小，b加速度增大C. a电势能减小，b电势能增大D. a和b的动能一定都增大参考答案：BD4. （单选）通电直导线放在匀强磁场中，磁感应强度B的方向如图所示．直导线在磁场中受力方向正确的是（）B C D参考答案：A．运动的物体有惯性，静止的物体没有惯性 B．物体的质量越大，惯性也越大C．物体受的合外力越大，惯性也越大 D．物体的速度越大，惯性也越大参考答案：B二、填空题：本题共8小题，每小题2分，共计16分6. 如图所示，两个大小不同的绝缘金属圆环叠放在一起，小圆环有一半面积在大圆环内。

当大圆环通有顺时针方向电流的瞬间，小圆环中感应电流的方向是。

（填“顺时针方向”或“逆时针方向”）参考答案：逆时针方向7. 如图所示，一质量为m．电荷量为+q的小球从距地面为h处，以初速度v0水平抛出，在小球运动的区域里，加有与小球初速度方向相反的匀强电场，若小球落地时速度方向恰好竖直向下，小球飞行的水平距离为L，小球落地时动能EK= ，电场强度E= ．参考答案：，8. 真空中有一电场，在电场中的P点放一电量为4.0×10-9C的检验电荷，它的电场强度为1N／C，则P点的电荷受到的电场力为________N.参考答案：9. 电路中感应电动势的大小，是由穿过这一电路的__________决定的．如图是某正弦式电流的图象，则此正弦式电流的周期为_______s,电流的峰值为_______A。

广东省广东省徐闻中学2010届高二物理周练(十四)

2010届高二物理周练〔十四〕班级总分为100分时间90分钟姓名一、此题共11小题；每一小题4分，共44分.在每一小题给出的四个选项中，有的小题只有一个选项正确，有的小题有多个选项正确，选不全的得2分，有选错或不答的得0分.1、一个按正弦规律变化的交变电流的 i -t 图象如下列图.根据图象可以断定A.交变电流的频率 f =0.2 HzB.交变电流的有效值I =14.1 AC.交变电流瞬时值表达式 i =20sin0.02t AD.在t =8T 时刻,电流的大小与其有效值相等 2、交流发电机正常工作时产生的电动势 e= Emsinωt,假设线圈匝数减为原来的一半,而转速增为原来的2倍,其他条件不变,如此产生的电动势的表达式为A.e=Emsin ωtB.e=2Emsin ωtC.e=2Emsin2ωtD.e=Emsin2ωt3、如下列图为一交变电流随时间变化的图象,此交流电的有效值是A.102 AB.10 AC.72 AD.7 A4、如下列图的电路图中,变压器是理想变压器,原线圈匝数n1=600匝,装有0.5 A 的保险丝,副线圈的匝数n2=120匝.要使整个电路正常工作,当原线圈接在180 V 的交流电源上,如此副线圈A.可接耐压值为36 V 的电容器B.可接“36 V 40 W 〞的安全灯两盏C.可接电阻为14Ω的电烙铁D.可串联量程为3 A 的电流表测量其电路的总电流5、如图2所示，L 1和L 2是高压输电线，利用甲、乙可以测输电线路电压和电流。

假设甲的原副线圈匝数比为1000：1，乙的原副线圈匝数比为1：l00，并且加在电压表两端的电压为220V ，通过电流表的电流为10A ，如此A 、甲是电压互感器B 、乙是电流互感器C 、输电线的输送功率为2.2×l08WD 、输电线的输送功率为2.2×104W6.图甲中的a 是一个边长为为L 的正方向导线框，其电阻为R .线框以恒定速度v 沿x 轴运动，并穿过图中所示的匀强磁场区域b .如果以x 轴的正方向作为力的正方向.线框在图示位置的时刻作为时间的零点，如此磁场对线框的作用力F 随时间变化的图线应为图乙中的哪个图？F t/L •v -1 O 1 2 3 4 5 F t/L •v -1O 1 2 3 4 5 A F t/L •v -1 O 1 2 3 4 5 F t/L •v -1 O 1 2 3 4 5 x 3L图甲 a b L7.如下列图，将一个正方形导线框ABCD 置于一个范围足够大的匀强磁场中，磁场方向与其平面垂直．现在AB 、CD 的中点处连接一个电容器，其上、下极板分别为a 、b ，让匀强磁场以某一速度水平向右匀速移动，如此 A.ABCD 回路中没有感应电流 B.A 与D 、B 与C 间有电势差 C.电容器a 、b 两极板分别带上负电和正电 D.电容器a 、b 两极板分别带上正电和负电8、如下列图，一闭合的小金属环用一根绝缘细杆挂在固定点O 处，使金属圆环在竖直线OO ′的两侧来回摆动的过程中穿过水平方向的匀强磁场区域，磁感线的方向和水平面垂直。

2020-2021学年广东省湛江市徐闻县徐城中学高三物理下学期期末试题含解析

2020-2021学年广东省湛江市徐闻县徐城中学高三物理下学期期末试题含解析一、选择题：本题共5小题，每小题3分，共计15分．每小题只有一个选项符合题意1. （多选）如图所示，A、B两球质量均为m．固定在轻弹簧的两端，分别用细绳悬于O点，其中球A处在光滑竖直墙面和光滑水平墙面的交界处，已知两球均处于平衡状态，OAB恰好构成一个正三角形，则下列说法正确的是（重力加速度为g）( )A．球A可能受到四个力的作用B．弹簧对球A的弹力大于对球B的弹力C．绳OB对球B的拉力大小一定等于mgD．绳OA对球A的拉力大小等于或小于1．5mg参考答案：ACD2. （多选）在“探究功与物体速度变化的关系”实验中，下列叙述正确的是（）AD3. 在教学楼的楼梯口，有如图所示的0、1、2、3…k级台阶，每级台阶的长为30cm，高为15cm．某同学从第0级台阶的边缘以v0=5m/s的速度水平抛出一小球，不计一切阻力，g取10m/s2，则小球将落在第几级台阶上（）A．7级B．8级C．9级D．10级参考答案：C【考点】平抛运动．【分析】小球做平抛运动，根据平抛运动的特点：水平方向做匀速运动，竖直方向做自由落体运动，结合运动学公式和几何关系即可求解．【解答】解：如图作一条连接各端点的直线，只要小球越过该直线，则小球落到台阶上．设小球落到斜线上的时间t水平：x=v0t竖直：y=gt2；且==2；联立解得t=0.5s相应的水平距离：x=5×0.5m=2.5m则台阶数：n==8.3＞8；知小球抛出后首先落到的台阶为第9级台阶．故C正确，A、B、D错误．故选：C4. 人类在探索自然规律的进程中总结出了许多科学方法，如分析归纳法、等效替代法、控制变量法、理想实验法等．在下列研究中，运用理想实验方法的是A．牛顿发现万有引力定律 B．卡文迪许测定引力常量C．伽利略得出力不是维持物体运动原因的结论 D．密立根测得电荷量e的数值参考答案：C5.参考答案：A二、填空题：本题共8小题，每小题2分，共计16分6. 某同学用如图所示的装置验证动能定理．为提高实验精度，该同学多次改变小滑块下落高度胃的值．测出对应的平撼水平位移x，并算出x2如下表，进而画出x2一H图线如图所示：①原理分析：若滑块在下滑过程中所受阻力很小．则只要测量量满足，便可验证动能定理．②实验结果分析：实验中获得的图线未过坐标原点，而交在了大约(0.2h，0)处，原因是。

2020年湛江市徐闻县徐闻中学高三英语上学期期末考试试题及答案

2020年湛江市徐闻县徐闻中学高三英语上学期期末考试试题及答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AFour remarkable inventionsFor more than half a century, the Consumer Electronics Show(CES) has been the place for companies and inventors to display their newest and coolest gadgets.Here are our picks for some of the most interesting and creative inventions.The Sweet Little Rolling RobotSamsung has released Ballie, a tennis-sized robot that can follow you around the house, answer your questions, and entertain your pets. Since it's equipped with a camera, it can keep an eye on your home while you're away. It's like a smart assistant that goes wherever you do, rolling into your bedroom to ring your wake-up alarm, rolling to the kitchen to turn on the toaster and giving you the weather report as you brush your teeth.The Insoles to Pick Up Your PactAny runner knows the right shoes are key to your speed. But Nurvv insoles promise more than mere cushioning. The insoles transmit data to a coaching app, which offers information on your technique and performance. It measures your foot strike and assesses your injury risk. The app then generates personalized workouts to set targets and help you beat your best speeds. Half marathon, here you come!The No-Studio-Needed Yoga ClassCan't keep up your commitment to a yoga studio membership? The Yoganotch personal yoga assistant lets you drop into a virtual class any time you want. Follow along with a set series while 3-D sensors tell you whether you need to straighten your legs a bit more. The idea it that it improves your form while reducing the risk of injury.The Dau-Enhanced GrillWhile working by sight, smell and feel, a chef may appreciate Weber's new Smart Grilling Hub. It can monitor your pork and turkey while an app gives advice about cooking technique and safe temperatures.1. What can the Sweet Little Rolling Robot do?A. Feed your pets.B. Hay tennis with you.C. Take you wherever you want.D. Assist you to do your housework.2. Which of the following is suitable for a runner?A. Ballie.B. Nurvv.C. Yoganotch.D. Smart Grilling Hub.3. What do we know about the Weber’s invention?A. It uses virtual reality.B. It is convenient for cooking.C. It makes meals for you automatically.D. It helps you do well in your yoga exercises.BThe year 2020 will mark the beginning of the decade of the yold, or the “young old”, as the Japanese call people aged between 65 and 75. The traditional retirement age is 65. One might therefore expect peak retirement. By continuing to work, and staying socially engaged, the yold will change the world, as they have done several times before at different stages of their lives.The yold are more numerous, healthier and wealthier than previous generations of seniors. The yold are busier, too. In short, the yold are not just any group of old people. They are challenging the traditional expectations of the retired as people who wear slippers and look after the grandchildren. That will influence consumer, service and financial markets.The over-60s are one of the fastest-growing groups of customers of the airline business. The yold are vital to the tourism industry because they spend much more, when taking a foreign holiday, than younger adults.But for all this to happen,three big things will have to change, under pressure from the yold themselves. The most important is public attitudes towards older people, and in particular the expectation that the old ought to be putting their feet up and quietly retiring into the background. Then, government policies will have to change, too. The retirement age in many rich countries is still below the age to which many people want to work. The effective retirement age (the age at which people actually leave the workforce) is usually even lower. Third, higher numbers of healthy yold people will require drastic changes in health spending. Most diseases of ageing are bestmetwith prevention and lifestyle changes. But only about 2%~3% of most countries’ health-care spending goes on prevention. That will have to rise, because although the yold will constitute a bulge of comparative health and activity over the next decade, by 2030 they will hit 75 and enter a long period of decline for which few rich countries are ready.4. What kind of people are the yold exactly?A. They are workaholics.B. They are full of energy.C. They enjoy being focused on.D. They like staying socially engaged.5. Why do the yold contribute to tourist industry?A. They like traveling more.B. They have more money.C. They consume more on travel.D. They have much free time.6. What’s the author’s attitude toward health-care spending on prevention?A. Unsatisfied.B. Subjective.C. Neutral.D. Active.7. What does the underlined word “met” in the fourth paragraph mean?A. dealt withB. come acrossC. satisfiedD. experienced.CWhen I was seven my father gave me a Timex, my first watch. I loved it, wore it for years, and haven’t had another one since it stopped ticking a decade ago. Why? Because I don’t need one. I have a mobile phone and I’m always near someone with an iPod or something like that. All these devices (装置) tell the time — which is why, if you look around, you’ll see lots of empty wrists; sales of watches to young adults have been going down since 2007. This is ridiculous. Expensive cars go faster than cheap cars. Expensive clothes hang better than cheap clothes. But these days all watches tell the time as well as all other watches. Expensive watches come with extra functions — but who needs them? How often do you dive to 300 metres into the sea or need to find your direction in the area around the South Pole? So why pay that much of five years’ school fees for watches that allow you to do these things?If justice were done, the Swiss watch industry should have closed down when the Japanese discovered how to make accurate watches for a five-pound note. Instead the Swiss reinvented the watch, with the aid of millions of pounds’ worth of advertising, as a message about the man wearing it. Rolexes are for those who spend their weekends climbing icy mountains; a Patek Philippe is for one from a rich or noble family; a Breitling suggests you like to pilot planesacross the world.Watches are now classified as “investments” (投资). A 1994 Philippe recently sold for nearly £ 350,000, while 1960s Rolexes have gone from £ 15,000 to £ 30,000 plus in a year. But a watch is not an investment. It’s a toy for self-satisfaction, a matter of fashion. Prices may keep going up — they’ve been rising for 15 years. But when of fashion. Prices may keep going up — they’ve been rising for 15 years. But when fashion moves on, the owner of that £ 350,000 beauty will suddenly find his pride and joy is no more a good investment than my childhood Times.8. The author don’t need another watch because ________.A. he don’t like wearing a watchB. he has mobile phone and can ask someone for helpC. he has no sense of timeD. he thinks watches too expensive9. It seems ridiculous to the writer that________.A. expensive watches with unnecessary functions still sellB. expensive clothes sell better than cheap onesC. cheap cars don’t run as fast as expensive onesD. people dive 300 metres into the sea10. What can be learnt about Swiss watch industry from the passage?A. It wastes a huge amount of money in advertising.B. It’s hard for the industry to beat its competitors.C. It targets rich people as its potential customers.D. It’s easy for theindustry to reinvent cheap watches.11. Which would be the best title for the passage?A. Timex or Rolex?B. My Childhood TimexC. Watches? Not for Me!D. Watches----a Valuable CollectionDI waschecking out at the supermarket counter on Wednesday night, ready to pay for my bananas, when all ofa sudden, fear came upon me. My wallet was gone. And I could only have left it one place: the G9 bus, from which I had gotten off minutes earlier and which was now speeding to some stops. The moment of realizing it was gone was followed by mental math. How much time and money would it cost to replace the credit cards, the driver's license, the expensive lipstick ($ 55!).Two hours after I was back at my house, I heard a knock on the door. My husband answered while I sat in the dining room on the phone with a credit card company. "Does Jennifer live here?" I heard someone say. In her hand was my wallet, without a penny missing. She left before I could offer my gratitude to her.After I posted the story, I heard from her boyfriend, who identified the good citizen as Erin Ball, a 26-year-old girl working for a trade organization.Once I figured out her, I called to thank her. She said she spotted my wallet and thought that it's more dangerous to go to a stranger's house than leaving the wallet with the driver, but she still decided to take the chance. "If I were in that situation, I would want someone to try to find me," she said. Ball doesn't find her actionsparticularly excellent. She added, "It's not hard to do small things for people."After Ball found my wallet, she decided to post a picture of my driver's license online before going to my house, trying to see if anyone knew me. No sooner had she left my doorstep than I got emails from two neighbors who recognized my face, both offering to help me find my missing property.Ball found my house on a bitterly cold night,for which I was extremely grateful. Looking back, I'm not surprised someone had wanted to help a stranger. A warm current of honesty and harmony is running through this town.12. What do we know about the author according to paragraph 1?A. She missed the G9 bus.B. She paid for her bananas.C. She replaced the credit cards.D. She found she had left her wallet on the bus.13. Who helped the author find Ball?A. The G9 driver.B. The girl's boyfriend.C. The author's neighbors.D. The author's husband.14. What did Ball do first after finding the wallet?A. Ball called the author.B. Ball went to the author's house.C. Ball gave the wallet to the bus driver.D. Ball posted a photo of the author's driving license.15. Which of the following best describes Erin Ball?A. Humorous and kind.B. Generous and demanding.C. Honest and warm-hearted.D. Caring and outgoing.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

2020年湛江市徐闻县徐闻中学高三英语期末试卷及答案解析

2020年湛江市徐闻县徐闻中学高三英语期末试卷及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项ALocated in the beautiful Sichuan Basin, Chongqing is a magical 8D city. The natural history and cultural scenery of the area provide children with learning opportunities because they can enjoy the many wonders of this area.Fengjie Tiankeng Ground JointTiankeng Diqiao Scenic Area is located in the southern mountainous area of Fengjie County. The Tiankeng pit is 666 meters deep and is currently the deepest tiankeng in the world. The scenic spot is divided into ten areas including Xiaozhai Tiankeng, Tianjingxia Ground, Labyrinth River, and Longqiao River. There are many and weird karst cave shafts, and countless legends haunt them.Youyang Peach GardenYouyang Taohuayuan Scenic Area is a national forest park, a national 5A-level scenic spot, and a national outdoor sports training base. Located in the hinterland of Wuling Mountain. The Fuxi Cave in the scenic spot is about 3,000 meters long, with winding corridors, deep underground rivers, and color1 ful stalactites. The landscape is beautiful.Jinyun Mountain National Nature ReserveJinyun Mountain is located in Beibei District of Chongqing City, about 45 kilometers away from the Central District of Chongqing City. The nine peaks of Jinyun Mountain stand upright and rise from the ground. The ancient trees on the mountain are towering, the green bamboos form the forest, the environment is quiet, and the scenery is beautiful, so it is called "Little Emei". Among them, Yujian Peak is the highest, 1050 meters above sea level; Lion Peak is the most precipitous and spectacular, and the other peaks are also unique.Chongqing People's SquareChongqing's Great Hall of the People, one of the landmarks of Chongqing, gives people the deepest impression than its magnificent appearance resembling the Temple of Heaven. It also uses the traditional method of central axis symmetry, with colonnade-style double wings and a tower ending, plus a large green glazed roof, large red pillars, white railings, double-eave bucket arches, and painted carved beams.1.How deep is the Tiankeng Ground Joint?A.666mB.3,000mC.45kmD.1050m2.Which of the following rocks can you see in Youyang Peach Garden?A.LimestoneB.StalactiteC.MarbleD.Quartzite3.Which attraction is closest to downtown Chongqing?A.Fengjie Tiankeng Ground JointB.Jinyun Mountain National Nature ReserveC.Chongqing People's SquareD.Youyang Peach GardenBIn many countries of the world, people can confidently tell youthe meaning of their town or city, but most people who live inManchester,OxfordorBirminghamwould not be able to explain what the name of their city means. The name of every British town and city, however, has a long history.Two thousand years ago, most people living inBritainwere Celts. Even the word “Britain" is Celtic (凯尔特语).Then the Romans arrived and built camps which became cities called “castra". This is why there are so many place names inEnglandwhich end in "-chester" or “-caster"Manchester, for example.The Romans never reachedWalesorScotland, and many placenames there are Celtic. For example,Welsh place names that begin with “Llan" come from the Celtic word for "church".After the Romans leftBritain, it was attacked by the Anglo-Saxons who were from the area of Europe that is nowGermanyandHolland. The names of their villages often ended in “-ham" or “-ton". Some got their names from the leader of the village.SoBirminghamfor example, means "Beormund's village”The Anglo-Saxons were farmers and the landscape was very important to them, so we have villages called Upton (village on a hill)——a good place to build a village and Moreton (“village by a lake”)where floods could make life hard. Place names that end in “-ford" (a place where you could cross a river) also describe the location of Anglo-Saxon villages.Finally, in 1066EnglandbecameNorman—theNormansgave us the place name "grange", which means farm.And how aboutLondon? Experts cannot agree. The Romans called the city Londinium, but they were not the first inhabitants (居民). People once believed that theUnited Kingdom’s capital city got its name from the castle of a King called Lud but this is very unlikely. Our best guess today is that the name comes from a Celtic word meaning a fast-flowing river. Like a number of British place names, its history is lost in time.4. The origin of British place names is unfamiliar to many local people because ofA. the death of local languagesB. the long lost history of the namesC. their lack of interest in itD. the frequent changes to the names5. According to the article,Stratfordis most likely a town .A. on a hillB. near a castleC. beside a riverD. with a church6. Which of the following shows the correct order of the arrival of inhabitants inBritain?A. The Celts—The Romans—TheNormans—The Anglo SaxonsB. The Celts—The Romans—The Anglo Saxons—TheNormansC. The Romans—The Celts—The Anglo Saxons—TheNormansD. The Romans―The Anglo Saxons—The Celts—TheNormans7. What doesLondonmean in Celtic?A. RiverB. LondiniumC. LudD. CastleCMark Bertram lost the tips of two fingers at work in 2018 when his hand became trapped in a fan belt. “It’s life-changing but it’s not life-ending,”he says.After two surgeries and occupational therapy, Bertram decided to ask Eric Catalano, a tattoo artist, to create fingernail tattoos. The idea made everyone in the studio laugh—until they saw the final result. “The mood changed,” Catalano recalls from his Eternal Ink Tattoo Studio in Hecker, Illinois. “Everything turned from funny to wow.”Catalano posted a photo of the tattoos, and it eventually was viewed by millions of people around the world. The viral photo pushed Catalano, 40, further into the world of paramedical tattooing. Now people who want to cover their life-altering scars come from as far away as Ireland to visit his shop.Leslie Pollan, a dog breeder, was bitten on the face by a puppy. She underwent countless surgeries but those gave her no hope. She ultimately traveled six hours for a session with Catalano. HecamouflagedPollan’s lip scar, giving her back confidence.Though he is now known for his talent with intricate fingernail, Catalano uses the techniques he picked up years ago while helping breast cancer survivors. Those tattoos are among the most common paramedical requests.His grandmother had breast cancer, and her battle with the disease is one reason Catalano is so dedicated to helping those with the diagnosis.Catalano performs up to eight reconstructive tattoos each “Wellness Wednesday”. While he charges $100 per regular tattoo, he doesn’t charge for paramedical tattoos: A GoFundMe page established last year brought in more than $16,000, allowing Catalano to donate his work.“Financially, it doesn’t make sense,” Catalano says. “But every time I see emotions from my customers, I am 100 percent sure this is something that I can’t stop doing.”8. How did people in the studio react to Bertram’s idea at first?A. They took it lightly.B. They found it creative.C. They were confused.D. They were impressed.9. What does the underlined word “camouflaged” in Paragraph 4 probably mean?A. Exposed.B. Hid.C. Ignored.D. Removed.10. What does Catalano say about his work with paramedical tattoos?A. It is flexible.B. It is demanding.C. It is profitable.D. It is rewarding.11. Which of the following can best describe Catalano?A. Humorous and experienced.B. Devoted and generous.C. Cooperative and grateful.D. Professional and tolerant.DNow most of the workers work from 9 am to 5 pm. However, according to the global Internet survey done by the UK Sleep Council, thesiesta（午睡）was the right idea all along. The UK Sleep Council called on the country'sbosses to end nine-to-five working in favor of more flexible hours. They believe what would really increase the workers' productivity is a nice afternoon nap, rather than those bonuses.Forty-one percent of the 12,000 people who responded to the council's survey said they were most productive in the morning, while 38 percent said theyhit their stridein the evening. "This means most of them cannot fully pay attention to what they do in the middle of the day," said sleep expert Dr. Chris Idzikowskii. "We must conclude from this survey that the traditional nine-to-five working day does not suit most workers." He suggested that allowing workers to follow their natural sleeping habits would actually benefit employers by allowing them to expand their working hours and be more productive.Fortunately, being a college lecturer, I don't have to go to work everyday. I only work three days a week, butduring the three days I work really long hours and have no time for a little siesta. I'm usually so tired and sleepy in the afternoon, which really affects thevitality（活力）of my classes.I think Dr. Chris Idzikowskii's idea is worthwhile. When people have flexible working hours they could reach their highest productivity. On top of that, flexible working hours mean thatpeople don't have to work all at the same time. That way we could avoid traffic jams. Therefore, it's really killing two birds with one stone!12. What can improve the workers' productivity, according to the UK Sleep Council?A. More bonuses.B. The flexible working time.C. Working for long hours.D. Working in a relaxing way.13. What does the underlined part probably mean in Paragraph 2?A. Were most sleepy.B. Were most flexible.C. Worked at their own pace.D. Worked at their best.14. What did the UK Sleep Council's survey find?A. Few people are suitable to work at noon.B. People are more productive in the morning.C. Some people like to expand their working hours.D. More and more people prefer to work in the evening.15. Why does the author support Dr. Chris Idzikowskii's idea?A. It could solve most of the traffic problems.B. He finds Dr. Chris Idzikowskii respectable.C. He thinks the idea can benefit the society.D. It allows him to work for fewer hours.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

2020年湛江市徐闻县徐闻中学高三语文下学期期末考试试题及参考答案

2020年湛江市徐闻县徐闻中学高三语文下学期期末考试试题及参考答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。

李白无论在美学理论上或艺术实践上，对于美学的主要对象——美，均作了深入地开掘。

在李白心目中，这种美的物质集中地表现为“清”。

“清”的含义极其丰赡。

既有自然之清，又有人物、事物之清。

大自然不加修饰、雕琢，以天生状态取胜，必含自然之清。

所谓山高月小、水落石出，即是一例。

至于风清骨峻，则是指人物风神、品格之清；而清词丽句，又是指诗文之清了。

“清”，既含内容，又含形式。

澄清、净洁，虚空，均可曰“清”。

李白《古风五十九首•其一)：“大雅久不作。

吾衰竞谁陈? ……自从建安来，绮丽不足珍。

圣代复元古，垂依贵清真。

”这里抒发了诗人对于大雅不作，诗道式微的慨叹，指出了建安以后，延及梁、陈推崇靡艳，诗风巨变的弊端，并用“不足珍”句坚决否定之。

所谓“绮丽”是特指六朝所染的风习，而不是泛指诗风的美丽。

因为作为文学艺术风格的绮丽与淫艳无涉，是应该予以肯定的。

六朝的淫摩诗风影响极大，下逮隋唐，仍未绝迹。

故李白抚今追昔，以古论今，提倡恢复远古朴实、清真的诗风，以振兴圣代(唐朝)的文学。

因而李白所强调的“清真”，具有继往开来的时代意义，不仅发扬了王勃、陈子昂反对六朝风习的战斗精神，而且也给中唐韩愈的古文运动以积极的影响。

李白对于“清真”的理解，不仅跨越了古今悠远溟漠的时空而显示出超越性。

同时还表现为人物风神的清虚、灵动、请酒、自由，艺术作品的清朗、谆真、精妙、传神。

且看他所描绘的王羲之及其书法艺术“右军本清真，游酒在风尘。

山阴遇羽客，要比好鹅宾。

扫素写道经，笔精妙入神。

书罢笼鹅去，何曾别主人!”王羲之爱鹅，山间一道士说：“你为我写《道德经》，当以群鹅相赠。

”王欣然命笔，写讫欣然携鹅而去，这个小故事原载《晋书》。

李白为了突现“清真”的自由，自然，特以“王右军”为题，作诗以颂之。

为了追求清真，李白决心付出毕生精力。

2020年湛江市徐闻县徐闻中学高三生物月考试题及答案解析

2020年湛江市徐闻县徐闻中学高三生物月考试题及答案解析一、选择题：本题共15小题，每小题2分，共30分。

每小题只有一个选项符合题目要求。

1. 大脑海马体某些区域在受到重复刺激后可产生一种持续增强的突触效应，称为长时程增强作用，其作用机理如下图所示。

下列说法错误的是（）A. 长时程增强作用的调节机制属于负反馈调节B. 谷氨酸是一种神经递质，以胞吐的形式释放C. 谷氨酸的释放实现了电信号向化学信号的转变D.N受体与A受体既可以识别谷氨酸，又可以运输离子2. 高等植物的生长发有受到环境因素调节，光、温度、重力对植物生长发育的调节作用尤为重要，请判断下列说法正确的有几项（）①对植物来说，光只是提供能量。

①光敏色素是一类色素--蛋白复合体，主要吸收红光和远红光①接受到光照射时，光敏色素的结构会发生变化①植物分布的地域性很大程度上就是由光照决定的①高等植物正常生长发育需要各个器官、组织、细胞之间的协调和配合①年轮、春化作用均能说明温度参与植物生长发育的调节①植物对重力的感受是通过平衡石细胞来实现的A.三项B.四项C.五项D.六项3. 下列有关物质出入细胞的叙述，正确的是A.被动运输需要载体蛋白协助，但不消耗A TPB.在质壁分离的复原过程中，细胞液浓度逐渐降低C.肝细胞通过主动运输吸收葡萄糖和甘油D.胞吐过程体现了细胞膜上载体蛋白的专一性4. 下列属于纯合子的个体是（）A.EeFFB.eeFFC.eeFfD.EEFf5. 随着医学的发展和生活水平的提高，人类对遗传病的重视程度与日俱增，下列关于人类遗传病与优生的叙述，正确的是A．先天性心脏病的病因和环境无关B．抗维生素D佝偻病属于性染色体基因遗传病，男性发病率高于女性C．20岁以下的妇女生育子女的先天畸形率高于25~34岁的妇女D．可用染色体组型测定来鉴定苯丙酮尿症6. 下列有关种群“S”型增长曲线的叙述，不正确的是（）A. 自然种群一般呈“S”型增长B. 种群增长速率逐渐减小C. 种群增长受自身密度的影响D. K值的大小受环境因素的影响7. 下列生物中属于原核生物的一组是（）①蓝细菌①酵母菌①草履虫①发菜①小球藻①根霉菌①大肠杆菌A.①①①B.①①①C.①①①①D.①①①①8. 下列不属于人体内环境稳态的是（）A.体温相对稳定B.细胞中DNA含量稳定C.血浆pH值相对稳定D.血浆渗透压相对稳定9. 2013年诺贝尔生理学或医学奖授予JamesRothman等三位科学家，以表彰他们在细胞的“囊泡转运”研究方面做出的重大贡献。

2020年湛江市徐闻县徐闻中学高三生物下学期期末试卷及参考答案

2020年湛江市徐闻县徐闻中学高三生物下学期期末试卷及参考答案一、选择题：本题共15小题，每小题2分，共30分。

每小题只有一个选项符合题目要求。

1. 若呼吸底物全为葡萄糖，下列关于人体呼吸作用的叙述，正确的是A.800m赛跑过程中02吸收量等于CO2释放量B.马拉松比赛时消耗等量葡萄糖放出的能量比步行时多C.环境温度从0℃升到37℃，人体内呼吸作用相关酶的活性逐渐上升D.包扎伤口应选用透气性好的“创可贴”，主要目的是保证伤口处细胞的有氧呼吸2. 麻雀是中国最常见、分布最广的鸟类，属于留鸟，不进行季节性迁徙。

某地区的麻雀有家麻雀、树麻雀、黑顶麻雀、山麻雀等不同种。

下列相关叙述正确的是（）A.该地区所有的麻雀属于一个种群B.利用标志重捕法可精确计算出家麻雀的种群密度C.季节变化不影响黑顶麻雀的种群密度D.山麻雀种群的最基本数量特征是山麻雀的种群密度3. 下列有关育种的叙述，正确的是（）A．转基因育种可以缩小生物变异的范围，按照人们意愿定向改造生物性状B．诱变育种依据的原理是基因突变，可在较短时间内有效地改良生物品种的性状C．单倍体育种的主要优点是能排除显隐性干扰和缩短育种年限D．多倍体育种得到的新品种，都可以通过种子繁殖下一代多倍体植株4. 阳光通过三棱镜能显示七种颜色的连续光谱。

如果将一瓶叶绿素提取液放在光源和三棱镜之间，连续光谱中就会出现一些黑色条带，这些条带应位于A. 绿色区B. 红光区和绿光区C. 蓝紫光区和绿光区D. 红光区和蓝紫光区5. 离体的胡萝b韧皮部细胞经过组织培养成完整植株，这说明植物细胞具有（）A.多样性B.专一性C.全能性D.稳定性6. 某化合物含C、H、O、N、S等元素，下列选项中最不可能属于其功能的是（）A.在特定的位点上切割基因B.抵抗病毒引起的感染C.激发并维持第二性征D.降低血糖7. 有关下图的各项叙述中，正确的是（）A.图中有两条食物链B.食物网中，狐与鸟之间既存在捕食关系，又存在种间竞争关系C.细菌占有第二、三、四、五营养级D.该图中的所有成分构成生物群落，狐为第三、四营养级8. 马利筋（一种植物）含有强心苷对鸟兽有毒，故鸟兽一般不食用，而斑蝶却可以食用并将强心苷贮存于身体组织中从而出现一种怪味，导致一般的食虫鸟不吃它。

2020年湛江市徐闻县徐闻中学高三语文月考试题及答案解析

2020年湛江市徐闻县徐闻中学高三语文月考试题及答案解析一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面文字，完成下列小题。

回家马兰莲火车像一条长龙，穿行在连绵不断的山脉中，雪花零零散散地从天空飘落下来，像飞，像蝉翼，清澈洁净，晶莹剔透。

肖锦云坐在靠窗的座位，怀里抱着一个大大的包裹。

她表情淡漠，甚至有些木然，她的眼睛里流出一种奇妙的神色，说不上是喜悦还是忧伤。

她一动不动，静静地坐着，像一尊雕塑。

她的对面坐着一对年轻夫妻，好像刚结婚不久，女人依偎在男人的怀里，甜甜地睡着了。

从她嘴角露出的微笑，足以证明，她正做着美梦。

男人一手楼着女人，一手拿着手机，拇指不停地在手机屏幕上滑动着，女人动了一下，盖在身上的衣服掉了下去。

男人放下手机，捡起衣服盖在女人的身上。

肖锦云看着他们，脸上呈现出一种复杂的表情，说不出是羡慕还是嫉妒，男人抬起头，刚好与她的目光相撞，便问道：“大姐，你去哪？”肖锦云显然没想到男人会跟她搭讪，怔了一下，淡淡地说:“回家。

”男人还想说话，肖锦云却把目光移向了窗外。

火车转过一个弯儿，“呜呜”地鸣叫着，钻进一个隧道里，闹哄哄的车厢里安静了许多。

肖锦云的脑子里开始翻江倒海了……六年前一个飘雪的日子，肖锦云接到男朋友打来的电话，筹备了大半年的婚事又要推后。

这已经是第三次了。

肖锦云知道男朋友的工作性质特殊，她决定自己去南方把婚事办了。

下了半个月的雪丝毫没有停下来的意思，肖锦云被两家的父母送上了南下的火车……“呜——”火车发出一声长鸣，咣当咣当地跑出隧道，外面的雪似乎有些大了，山坡上、树枝上落满了白茸茸的雪花。

女人醒了。

她揉了揉眼睛，惊喜地叫道:“老公，雪下得好大，雪花真美。

”男人轻描淡写地说:“这算什么，老家的雪比这漂亮多了。

”女人撒起娇来，搂着男人的脖子说:“老公，我想吃鸭脖。

”“你就是个馋猫。

”男人从背包里拿出一个袋子，又拿出两瓶冰红茶。

女人像饿狼扑食一样自顾自地吃起来。

男人抬头看了看肖锦云，试探着问:“大姐，你喝点儿水吧。