广东省六校2020届高三英语第二次联考试题[附答案]
广东省六校2024届高三上学期第二次联考语文试题及答案解析

一、现代文阅读(35分)(一)现代文阅读I(本题共5小题,19分)阅读下面的文字,完成1-5题。
①在公共生活中的“说理”是一种理性交流、表达看法、解释主张,并对别人可能有说服作用的话语形式。
说服就是运用语言来对具体的他人作劝说、解释、说明,以期对他们有所影响。
伊索寓言中有一则《太阳与风》的故事:太阳与风进行比赛,看谁能使穿着外套的行人脱掉外套。
风刮了又刮,但刮得越凶,那个行人就把外套裹得越紧。
然后太阳出来了,照在行人的身上,行人感到身体出汗了,就把外套脱了下来。
这个故事可以用作“说服强于强制”的寓言。
希腊哲学家芝诺对说服有相似的说法,他称说服是一只摊开的手掌,而不是一个攥紧的拳头。
说服是欢迎他人加入对话,不是企图限制他们有自己的看法,更不是威胁他们不准有自己的看法。
②说理通过说明和协商,而不是暴力或战争来解决人间可能出现的矛盾和冲突,并形成一种可以称之为“讲理”的文明秩序。
所有的战争和混乱都是在没有协商,无理可讲的情况下发生的;说理使得人类能够用摊开的手掌,而不是攥紧的拳头来相互交往,人类才得以进入文明社会。
然而,当下互联网中的说理常常被当作是攥紧拳头,而非摊开手掌的话语行为。
这样的“说理”便成为“占领话语阵地”“口诛笔伐”“论战”和向对方报以“投枪”和“匕首”。
这种“说理”观念令无数人深受其害而浑然不知。
③说理是发表意见,但“发表意见”并不就是说理。
任何表达看法的陈述,包括骂和谩骂,都可以说是“发表意见”,但并不是说理。
说理的“发表意见”必须包括两个部分:一个是“结论”(也称主张或看法),另一个是“理由”,结论是由理由来支持的。
当然,有理由支持的结论未必都确实或可靠,因此需要评估理由是否真的能充分支持主张。
④说理需要平等、理性地对待不同意见,并不只是出于说理者主观意愿的“宽宏”“宽厚”或“宽容”,而是由“说理”本身的话语特性决定的。
说理离不开价值判断,包括伦理和政治的判断,尽管它并不专门讨论伦理和政治。
2024学年广东省佛山市六校联考高三第二次模拟考试英语试卷(含解析)

2024学年广东省佛山市六校联考高三第二次模拟考试英语试卷考生须知:1.全卷分选择题和非选择题两部分,全部在答题纸上作答。
选择题必须用2B铅笔填涂;非选择题的答案必须用黑色字迹的钢笔或答字笔写在“答题纸”相应位置上。
2.请用黑色字迹的钢笔或答字笔在“答题纸”上先填写姓名和准考证号。
3.保持卡面清洁,不要折叠,不要弄破、弄皱,在草稿纸、试题卷上答题无效。
第一部分(共20小题,每小题1.5分,满分30分)1.If we surround ourselves with people _____our major purpose, we can get their support and encouragement.A.in sympathy with B.in terms ofC.in honour of D.in contrast with2.---He was satisfied with the result, wasn't he?---No. It was so difficult that he __________have passed it.A.shouldn't B.mustn'tC.couldn' t D.wouldn't3.______ caught in the rain unexpectedly, we still enjoyed the journey very much.A.When B.AsC.Unless D.Although4.Nowadays, more and more young ladies, figures most are fine enough, are going on a diet.A.who B.whoseC.of whose D.of whom5.—Which do you prefer, the former option or the latter one?—I think the former one is no better than the latter one. So I’ll choose ________.A.the former one B.the latter oneC.either of them D.neither of them6.China's Beidou Navigation Satellite System has started providing global services, ________ to become complete around 2020.A.being scheduled B.scheduled C.to schedule D.scheduling7.Take the note as a reminder ______ you forgot to buy some sweets for the kids while shopping there.A.how B.thatC.in case D.even if8.When the old man woke up, he found someone his TV in the living room.A.stole B.steal C.stealing D.stolen9.It really matters _______ he treated the latest failure, for the examination is around the corner.A.if B.thatC.why D.how10.--- Mom, can you give me an extra 200 yuan a month?--- Son, we have just bought a house, and from now on we need to practise strict .A.economy B.medicine C.self-control D.patience11.If he had been working har d, he ______ in the office now. However, he didn’t.A.would be working B.were to be working C.was working D.should work12.—I'm sorry. I shouldn't have been so rude to you.—You ________ something not very nice to me, but that's OK.A.have said B.had said C.were saying D.did say13.—When did you get to know your girlfriend?—It was in 2015 ________ she was working as a volunteer in Africa.A.that B.whichC.when D.then14.If it ________ for her great help then, I would not study English so well now.A.hasn’t been B.wasn’tC.hadn’t been D.isn’t15.The incomes of skilled workers went up. , unskilled workers saw their earnings fall.A.Moreover B.ThereforeC.Meanwhile D.Otherwise16.She doesn’t speak our language, she seems to understand what we say.A.yet B.andC.or D.so17.People from all walks of life are eager for success, _______ lack of confidence, however, is a great barrier. A.where B.whichC.to which D.beyond which18.It s a good idea to get students to retell a story their own words.A.of B.in C.by D.through19.The farmers are in bad need of rain,but a (an) large amount of rainfall will cause Floods. A.Eventually B.constantly C.gradually D.extremely20.— Which classical Chinese poem do you like best?—Don’t lau gh if we lay drunken on the battleground; how many soldiers ever came back______.A.old and young B.up and down C.safe and sound D.right and wrong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。
广东省六校联盟2023-2024学年高二上学期12月联考英语试题

广东省六校联盟2023-2024学年高二上学期12月联考英语试题学校:___________姓名:___________班级:___________考号:___________一、阅读选择China is a colorful country with amazing places and cultures. In this blog, we will introduce five most attractive places that you can’t miss if you are planning to go for a travel in China!BeijingBeijing, the capital of China for over 850 years, is the first choice for many travellers. A perfect combination of classic elegance and modernity, it is the best Chinese destination to give you a better understanding of the country. You can wander around the Forbidden City to feel the dignity of the city; or you can walk along the criss-crossing hutongs and enjoy yourself in everyday local life.Xi’anIf you want to feel the history of China over the past 1,000 years, you can go to Beijing; however, if you want to experience the 5,000 years’ history of this ancient, oriental land, Xi’an is the best travel destination in China. As one of the four major capitals of ancient civilisation (together with Athens, Cairo, and Rome), Xi’an is the home of Chinese civilisation. The Silk Road starts from here, stretching through West China to the Mediterranean.GuilinGuilin, a peaceful city lying in the hilly south-western area of the country, is among the top Chinese destinations for its extraordinary natural scenery. The unique karst landscape with its four features, namely green hills, clear water, fantastic caves, and oddly-shaped rocks, makes it a famous tourist attraction.ChengduVisiting the lovely giant pandas must be on everyone’s to-do list when planning a tour of the best Chinese destinations. Many cities have zoos with space for pandas, but the best place to get close to them is Chengdu for sure! Visiting Chengdu is also a treat for food lovers. Jin li Street is a great place to have a taste of well-known Sichuan food. Besides, you can also enjoy the comfortable atmosphere.1.What can you do in Beijing?A.Enjoy the oddly-shaped rocks.B.Have a taste of Sichuan food.C.Walk around the Forbidden City.D.Learn the history of the Silk Road.2.If you are interested in natural landscapes, which destination is suitable for you?A.Beijing.B.Xi’an.C.Guilin.D.Chengdu. 3.What will be written in the following paragraph?A.Another attractive place in China.B.The introduction to karst landscape.C.Tips for travelling around the world.D.The contact information of a museum.It is a bright cold day in April and Paul Blachut is busy as usual. From behind the bar of a restaurant, he has a good view of the river. He can see that, along the shore, many visitors are cooling their feet in the river.Among those are a mother and her two teenage daughters. They’re standing on the edge of the riverbank, playing with an inflatable (充气的)tube when, suddenly, the girls lose their footing and are caught in the river’s current. It all happens so fast. The girls desperately grab on to the tube, which their mother is sitting in, dragging her into the river, too. Now all three are being carried away by the fast current.A bystander races to the restaurant and shouted for help. Despite having no lifesaving training, Blachut rushes to the riverbank, quickly pulling off his T-shirt. Then he jumps into the river. He doesn’t care about the cold; all he can think about is saving the women.As Blachut gets closer to them, he can tell that the mother seems to be in the most trouble; her head is now submerged. He recalls how a lifeguard saves people in a movie so he tries this, but in vain. Without hesitation, Blachut dives under the drowning woman, pushing her upward and using that momentum (冲力) to push her toward the shore. Then he dives into the current again, swims quickly downstream and manages to get hold of one of the teenagers, and get her out in the same way he did her mother. He is out of strength and luckily, the girl’s sister is helped out by someone else.Several onlookers express their admiration for Blachut following the incident, but he is modest about his role. “The whole rescue only took two or three minutes” he says today, adding that he is happy to have received high praise from his boss for his courage. Indeed, it was a job very well done.4.What might Blachut be?A.A visitor.B.A waiter.C.The boss.D.A lifeguard. 5.What happens to the mother of two teenagers?A.She loses her footing while playing.B.She is dragged into the river by accident.C.She jumps into the river to save her daughters.D.She loses control of the tube and flows with it.6.What is the key factor in this successful rescue?A.Blachut’s rich lifesaving experience.B.The method Blachut recalls in a movie.C.The slow speed of the river current.D.Blachut’s ability to make quickdecisions.7.In which section of a newspaper may the text appear?A.Health.B.Travel.C.Inspiration.D.Entertainment.“With the passing of Chinese scientist Yuan Longping, China and the world have lost one greatest agricultural scientists,” Kenneth Quinn, president of the World Food Prize Foundation, said. Quinn, also vice chairman of the Yuan Longping International Rice Development Forum, shared his memory of the “father of hybrid rice” in an interview with Xinhua on Sunday.Quinn first met Yuan in October 2004, when Y uan traveled to Des Moines in the U.S. state of Iowa to receive the World Food Prize. As they walked out of the airport , Quinn received a call and stepped aside to speak. When he turned back a minute or two later, he lost Yuan. “I had never before ‘lost’ a laureate(贵人),” he said. After a desperate search, he found Professor Yuan surrounded by a group of smiling graduate students from Iowa State University who so admired him that they wanted to take him off for a meal and conversation.Quinn admired Yuan as a teacher. “He always had time to answer questions and speak with young scientists and students. The American high school students we sent to his research center each year always returned filled with knowledge and a deep desire to learn more.”In Quinn’s eyes, Yuan was incredibly humble, never seeking fame, and focused only on hard work and results that could help lift people out of poverty. With a ‘down to earth’ attitude, Yuan greatly reduced hunger and provided farmers with surplus income through his discovery of hybrid rice.Learning of Yuan’s passing away on Saturday, Quinn issued a statement to send his deepest sympathy to Yuan’s family and colleagues in China, as well as his admirers across theworld. “Professor Y uan Longping, who was truly beloved in his country and by all of us who knew him, will be greatly missed. His legacy will provide inspiration to generations far into the future, in China and across the world,” Quinn said in the statement.8.How did Kenneth Quinn feel when he found Yuan in a group of students?A.Confused.B.Amazed.C.Annoyed.D.Frightened. 9.How did Yuan Longping deal with young people ?A.He cared about the development of the youth.B.He sent young students abroad for further study.C.He was too busy to answer the students’ question.D.He was generous to help young people out of trouble.10.What does the words “down to earth” mean in paragraph 4?A.Realistic .B.Stubborn C.Flexible D.Critical 11.What is the purpose of the text?A.To introduce the “father of hybrid rice”.B.To share the stories of Y uan Longping.C.To remember Professor Yuan LongpingD.To inspire the young to become a pioneer.Jason M. Allen was almost too nervous to enter his first art competition. Now, his award-winning image is stirring debates about whether art can be generated by a computer, and what, exactly, it means to be an artist.In August 2022, Allen, a 39-year-old game designer who lives in Pueblo West, Colorado, won first place in the “digital arts/digitally-operated photography” category at the Colorado State Fair Fine Arts Competition. His winning image, titled Théatre D’opéra Spatial, was made with Midjourney—an artificial intelligence system that can produce detailed images when fed written prompts (提示).Allen’s winning image looks like a bright cross between a classic and modern painting. It’s one of three such images he entered in the competition. Allen posted excitedly about his win on Midjourney’s Discord server on August 25, along with pictures of his three entries; it spread quickly on Twitter days later, with many artists feeling angry about Allen’s win because of his use of AI to create the image. “He just ‘pressed a few buttons to make a digital art piece’,” one Twitter user wrote. “We’re watching the death of art unfold before our eyes.”However, to get the final three images he entered in the competition, Allen said, he took over 80 hours. First, he played around with phrasing that led Midjourney to generate images of women in nice dresses and space helmets. Over time, with slight adjustments to his written prompts, he created 900 repeating processes of what led to his final three images. He gave the final touch to those three images in Photoshop. Then he ran the images through another software program called Gigapixel AI that can improve resolution (分辨率) and had the images printed at a local print shop.Allen is glad that the debate over whether AI can be used to make art is getting so much attention. “Rather than hating the technology or the people behind it, we need to recognize it’s a powerful tool and use it for good so we can all move forward,” Allen said.12.What do we know about Theatre D’opera Spatial?A.Its beauty is widely accepted.B.Its creation is an easy process.C.It shows the death of traditional art.D.It has caused a lot of arguments. 13.What did Allen do to create his entries?A.He searched for smart written prompts.B.He edited his final images in Photoshop.C.He fed Midjourney with famous paintings.D.He developed the software named Gigapixel.14.What is Allen’s attitude to the debate over Al-created art?A.Worried.B.Uncaring.C.Positive.D.Annoyed. 15.What might be the best title for the text?A.AI Beats Out Human Artists in the Art FieldB.AI Won an Art Contest and Artists Are AngryC.An Artist Wins State Fair Art Contest and LaughsD.The Artist From Pueblo West Is Defending His Work.Over the past years, countless studies conducted have shown the positive effects that laughing has on one’s physical and mental health. Are you ready to laugh more? Below you’ll find five ways to bring more laughter into your life.Smile more. Smiling is not laughing. 16 When you smile, happy changes begin to take place naturally, both internally and externally. In addition, you can think of smiling as a warm-up for laughing.Learn to laugh at yourself. Most of us take ourselves too seriously. 17Learning to laugh at yourself takes some of the pressure off. You can look for the funny side of things. When you’re upset about something, ask yourself “How is this situation funny?” Humor can even turn a negative into a positive.Share stories from the past. Do you remember one time in high school that you and your best friend wore false hair and matching clothes around your neighborhood? Or, how about when your best friend sat on a painted bench by accident? 18Take up something new. When you try something new — whether it’s to draw or learn to roller skate — your original attempts will likely be clumsy (笨拙的) and even ridiculous (荒谬的). 19 So taking up something new is likely to result in laughs.20 We are heavily influenced by the people we are with, so by hanging out with funny people, we can add more laughter into our days. That positive and silly energy will immediately rub off on (感染) us and it can cause us to want to feel happier and sillier throughout our days.A.That is funny.B.It has a lot of benefits.C.Follow funny people on Twitter.D.Surround yourself with funny people.E.These reminders can make us feel silly and childlike.F.For better results, think of a funny moment from the past.G.So our ability to find the humor in difficult situations can be limited.二、完形填空I can remember the first time it happened. Class was getting out of hand. Our teacher,gave up and informed we could take a rest. Instantly, the classroom erupted with studentsa nice girl in class. She’s a 27 .” And there it was: my first “nice”.Whether or not I knew it, a 28 had been set for my future behavior, though my teacher probably didn’t mean it.As years passed, I became 29 in the art of nice. But as much as I loved praise, I was too 30 to dare be anything but nice.People rarely see the Real Me, because the Real Me is 31 .She doesn’t clean her room as often as she should. She’s 32 at making decisions. Nice became a shelter I 33 my real feelings. “It’s like living a. 34 life,” I thought. I am 35 with being nice. I want to be the best of myself, not the nicest.21.A.sight B.focus C.spirit D.preference 22.A.moving B.changing C.adjusting D.leaving 23.A.excitedly B.hopelessly C.quietly D.nervously 24.A.positive B.normal C.complex D.strange 25.A.picked out B.handed over C.showed off D.drove away 26.A.arrived B.demanded C.followed D.insisted 27.A.treasure B.legend C.star D.champion 28.A.plan B.style C.standard D.goal 29.A.poorly-adapted B.well-trained C.annoyed D.confused 30.A.active B.honest C.eager D.scared 31.A.shy B.perfect C.messy D.unique 32.A.terrible B.quick C.wise D.careful 33.A.managed B.shared C.expressed D.hid 34.A.simple B.comfortable C.double D.busy 35.A.familiar B.tired C.confident D.pleased三、语法填空阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。
广东省六校联盟(深圳实验,广州二中,珠海一中,惠州一中,东莞中学,中山纪中)2020届高三第二次

广东省六校联盟(深圳实验,广州二中,珠海一中,惠州一中,东莞中学,中山纪中)2020届高三第二次联考理综化学试题学校_________ 班级__________ 姓名__________ 学号__________一、单选题1. 现代社会的发展与进步离不开材料,下列有关材料的说法不正确的是()A.500米口径球面射电望远镜被誉为“中国天眼”,其“眼眶”是钢铁结成的圈梁,属于新型纯金属材料B.用于新版人民币票面文字等处的油墨中所含有的Fe3O4是一种磁性物质C.港珠澳大桥路面使用了沥青和混凝土,沥青可以通过石油分馏得到D.国庆阅兵仪式上的坦克和军车都喷涂着新式聚氨酯迷彩伪装涂料,能适应多种环境背景下的隐蔽需求,聚氨酯属于有机高分子材料2. NA代表阿伏加德罗常数的值。
下列叙述正确的是()A.1mol碳正离子(CH3+)所含的电子总数为9NAB.25℃,pH=13的Ba(OH)2溶液中含有OH-的数目为0.1NAC.常温常压下,过氧化钠与水反应时,生成8g氧气转移的电子数为0.5NAD.1mol雄黄(As4S4),结构如图:,含有2NA个S-S键3. 诺卜醇可用于调制木香型化妆品及皂用香精。
一种制备方法如图所示,下列说法正确的是()A.可用溴的CCl4溶液区别β–蒎烯与诺卜醇B.β–蒎烯和诺卜醇分子中都有一个由5个碳原子构成的四面体C.可用乙酸检验β–蒎烯中是否含有诺卜醇D.β–蒎烯的饱和碳原子上的一氯代物有7种4. 下列图示实验正确的是()A.制取蒸馏水B.制取收集氨气C.乙酸乙酯的制备D.碳酸氢钠受热分解5. 以铬铁矿[主要成分为Fe(CrO2)2],含有Al2O3、Fe2O3、SiO2等杂质为主要原料生产重铬酸钠晶体(Na2Cr2O7·2H2O)的主要工艺流程如下,关于该流程说法错误的是()A.煅烧生成Na2CrO4的化学方程式为:4Fe(CrO2)2+8Na2CO3+7O22Fe2O3+8Na2CrO4+8CO2B.SiO2在“浸出过滤”步骤中和Fe2O3一起除去C.Na2CrO4到Na2Cr2O7转化的原理为:2H++2CrO42-Cr2O72-+H2OD.该工艺中“煅烧”产生的CO2可用于“除杂”步骤以节约生产成本,为完全除去AlO2-,发生的离子反应为:CO2+AlO2-+2H2O=Al(OH)3↓+HCO3-6. X、Y、Z、W为原子序数依次增大的四种短周期元素,其中Z为金属元素,X、W为同一主族元素。
2024届高三六校第二次联考联考数学试卷及答案

东莞中学、广州二中、惠州一中、深圳实验、珠海一中、中山纪念中学2024届高三第二次六校联考试题数学命题人:广州二中一、选择题:本题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.集合},02|{},1log |{22≤--=<∈=x x x B x Z x A 则=B A ()A.},{10B.}{1 C.}{1,0,1- D.}2101{,,,-2.已知21)sin(=+πα,则=+)2cos(πα()A.21B.21-C.23 D.23-3.“1>x 且1>y ”是“1>xy 且2>+y x ”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件4.如图,B A 、两点在河的同侧,且B A 、两点均不可到达.现需测B A 、两点间的距离,测量者在河对岸选定两点D C 、,测得km CD 23=,同时在D C 、两点分别测得CDB ADB ∠=∠︒=30,,45,60︒=∠︒=∠ACB ACD 则B A 、两点间的距离为()A.23B.43C.36 D.466.已知函数)2cos(sin )6cos(4)(x x x x f ωπωω-++=,其中0>ω.若函数)(x f 在5,66ππ⎡⎤-⎢⎥⎣⎦上为增函数,则ω的最大值为()A.310 B.21 C.23 D.2多项符合题目要求.全部选对的得5分,部分选对的得2分,有选错的得0分.9.已知ABC ∆中角B A ,的对边分别为,,b a 则可作为“b a >”的充要条件的是()A.B A sin sin >B.B A cos cos <C.BA tan tan >D.BA 2sin 2sin >11.已知函数()lg 2f x x kx =--,给出下列四个结论中正确结论为()A.若0k =,则()f x 有两个零点B.0k ∃<,使得()f x 有一个零点C.0k ∃<,使得()f x 有三个零点D.0k ∃>,使得()f x 有三个零点13.已知)(x f 定义域为]1,1[-,值域为]1,0[,且0)()(=--x f x f ,写出一个满足条件的)(x f 的解析式是14.已知函数)22,0,0)(sin()(πϕπωϕω<<->>+=A x A x f 的部分图象如图所示,则函数)(x f 的解析式为______四、解答题:本题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤.17.(本小题10分)已知ABC ∆中角C B A ,,的对边分别为,,,c b a 满足.cos 3cos cos C C abB a c =+(1)求C sin 的值;(2)若23,2=+=c b a ,求ABC ∆的面积.18.(本小题12分)如图为一块边长为2km 的等边三角形地块ABC ,现对这块地进行改造,计划从BC 的中点D 出发引出两条成60︒角的线段DE 和DF (60,EDF ∠=︒F E ,分别在边AC AB ,上),与AB 和AC 围成四边形区域AEDF ,在该区域内种上花草进行绿化改造,设BDE α∠=.(1)当︒=60α时,求花草绿化区域AEDF 的面积;(2)求花草绿化区域AEDF 的面积()S α的取值范围.已知函数()2ln xf x ea x =-.(1)讨论()f x 的导函数()f x '的零点的个数;(2)证明:当0a >时()22lnf x a a a≥+.21.(本小题12分)已知函数()ln(1)xf x e x =+(1)求曲线()y f x =在点(0,(0))f 处的切线方程;(2)设)(')(x f x g =,讨论函数()g x 在[0,)+∞上的单调性;(3)证明:对任意的,(0,)s t ∈+∞,有()()().f s t f s f t +>+22.(本小题12分)已知函数()axf x xe =.(1)求()f x 在[]0,2上的最大值;(2)已知()f x 在1x =处的切线与x 轴平行,若存在12,x x R ∈,12x x <,使得()()12f x f x =,证明:21x x ee >.东莞中学、广州二中、惠州一中、深圳实验、珠海一中、中山纪念中学2024届高三第二次六校联考试题标准答案及评分标准一、单项选择题二、多项选择题123456789101112B A A D D ACCABBCDABDACD三、填空题:(每小题5分,共20分)13.]1,1[|,|)(-∈=x x x f 或者]1,1[,2cos)(-∈=x xx f π或者21)(x x f -=或者...14.)62sin(2)(π+=x x f 15.2,1416.()2,0,e ⎡⎫-∞⋃+∞⎪⎢⎣⎭四、解答题17.【解析】(1)解法一:c cos B+bcosC =3a cos C .由正弦定理CcB b A a sin sin sin ==得sin C cos B +sin B cos C =3sin A cos C ,....2分所以sin(B +C )=3sin A cos C ,..........3分由于A +B +C =π,所以sin(B +C )=sin(π-A )=sin A ,则sin A =3sin A cos C .因为0<A <π,所以sin A ≠0,cos C =13...........4分因为0<C <π,所以sin C =1-cos 2C =223...........5分解法二:因为c cos B+bcosC =3a cos C .所以由余弦定理得c ×a 2+c 2-b 22ac =(3a -b )×a 2+b 2-c 22ab,化简得a 2+b 2-c 2=23ab ,所以cos C =a 2+b 2-c 22ab =23ab 2ab =13.因为0<C <π,所以sin C =1-cos 2C =223.(2)由余弦定理c 2=a 2+b 2-2ab cos C ,.......7分及23,2=+=c b a ,cos C =13,得a 2+b 2-23ab =18,即(a -b )2+43ab =18.所以ab =12.......8分所以△ABC 的面积S =12ab sin C =12×12×223=4 2........10分18.【解析】(1)当60α= 时,//DE AC ,//DF AB∴四边形AEDF 为平行四边形,则BDE ∆和CDF ∆均为边长为1km 的等边三角形又)2122sin 602ABC S km ∆=⨯⨯⨯= ,)2111sin 602BDE CDF S S km∆∆==⨯⨯⨯=∴)22km =................3分(2)方法一:由题意知:3090α<< ,BD=CD=1()())1sin 602ABC BDE CDF S S S S BE CF BE CF α∆∆∆∴=--=+=+ ......4分在BDE ∆中,120BED α∠=- ,由正弦定理得:()sin sin 120BE αα=-............5分在CDF ∆中,120CDF α∠=︒-,CFD α∠=由正弦定理得:()sin 120sin CF αα-=.............6分()()sin 120s sin sin sin 120BE CF αααα-∴+=+=- ....................7分令21tan 23sin sin 21cos 23sin )120sin(+=+=-︒=ααααααt 3090α<< ⎪⎭⎫⎝⎛∈∴+∞∈∴2,21),33(tan t α.................10分)(1t f t t CF BE =+=+()上单调递增.,在上单调递减;在21)(1,21)(11)('2t f t f t t f ⎪⎭⎫⎝⎛∴-= 25,2[)(∈∴t f 即52,2BE CF ⎡⎫+∈⎪⎢⎣⎭()Sα∴)4BE CF +∈⎝⎦即花草地块面积()S α的取值范围为⎝⎦..................12分方法二:由已知得++,++,BED B EDF FDC απαπ∠∠=∠∠=又,3B EDF π∠=∠=所以BED FDC ∴∠=∠,在BED ∆和CDF ∆中有:60,B C BED FDC ︒∠=∠=∠=∠,BED CDF ∴∆∆ ,得CFBDDC BE =又D 是BC 的中点,11DC BD BE FC ∴==∴⋅=,且当E 在点A 时,12CF =,所以122CF <<,所以111211)222S BE CF BE CF =⨯⨯-⨯=+,设CF x =,1BE x=,且122x <<,令1y x x =+,则()()2222+11111x x x y x x x '--=-==,112x ∴<<时,10,y y x x '<=+在112⎛⎫ ⎪⎝⎭,单调递减,12x <<时,10,y y x x '>=+在(1,2)上单调递增,1x ∴=时,1y x x =+有最小值2,当12x =或2x =时,152y x x =+=,所以面积S的取值范围是82⎛ ⎝⎦.19.【解析】(1)()3()cos()sin()sin sin cos cos sin 2f x x A x x A x A x π=+⋅-=-..........2分2sin cos sin cos sin x x A A x=-()sin 21cos 211sin cos cos cos 22222x x A A A x A -=⨯-⨯=-+-,...........4分故()max111cos 224f x A =-+=,故1cos 2A =.因为()0,A π∈,故3A π=...............5分(2)1111()cos cos 2cos 22323234f x x x πππ⎛⎫⎛⎫=-+-=-- ⎪ ⎪⎝⎭⎝⎭,故1()2(())cos 243g x f x x π⎛⎫=+=- ⎪⎝⎭,令()s g x =,,33x ππ⎡⎤∈-⎢⎥⎣⎦,则()g x 的图象如图所示:可得[]1,1s ∈-,............6分方程24[()][()]10g x m g x -+=在[,]33x ππ∈-内有两个不同的解又[]1,1s ∈-,下面考虑2410s ms -+=在[]1,1-上的解的情况.若2160m ∆=-=,则4m =-或4m =(舍)当4m =-时,方程的解为12s =-,此时1cos 232x π⎛⎫-=- ⎪⎝⎭仅有一解,故方程24[()][()]10g x m g x -+=在[,]33x ππ∈-内有一个解,舍...........8分若2160m ∆=->,则4m <-或4m >,此时2410s ms -+=在R 有两个不同的实数根)(,2121s s s s <,当4m <-时,则120,0s s <<,要使得方程24[()][()]10g x m g x -+=在[,]33x ππ∈-内有两个不同的解,则1210,10s s -≤<-≤<.令()241h s s ms =-+,则()()41010800m h m h <-⎧⎪-≥⎪⎪⎨-<<⎪⎪>⎪⎩,解得54m -≤<-............12分综上,m 的取值范围为:[)5,4--.20.【解析】(1)()f x 的定义域为()0,,+∞()22(0)xaf x e x x'=->.....1分当a ≤0时,()()0f x f x ''>,没有零点;......2分.当0a >时,因为2xe 单调递增,ax-单调递增,所以()f x '在()0,+∞单调递增,...3分当b 满足0<b<4a 且b<14时,即若41,1<≥b a 时,04242)41(')('<-≤-=<e a e f b f;若414,10<<<<a b a 时,04242)4(')('2<-<-=<e e a f b f a;则()0f b '<...5分另法:0→x 时),0( ,022>-∞→-→a xa e x所以-∞→→)(',0x f x 且)('x f 在)0(∞+,上是连续的,所以必存在b 使得()0f b '<,又()0f a '>即有0)(')('<b f a f ,故当0a >时()f x '存在唯一零点.……6分(2)当0a >时由(1),可设()f x '在()0,+∞的唯一零点为0x ,当()00x x ∈,时,()f x '<0;当()0x x ∈+∞,时,()f x '>0...........7分故()f x 在()0+∞,单调递减,在()0x +∞,单调递增,所以0x x =时,()f x 取得最小值,最小值为()0f x ......8分由于=)('0x f 02020x ae x -=,............9分所以()0002221212a f x ax a n a a n x a a=++≥+......11分故当0a >时,()221f x a a na≥+.……12分21.【解析】(1)因为)1ln()(x e x f x+=,所以0)0(=f ,即切点坐标为)0,0(,..1分又]11)1[ln()(xx e x f x+++=',∴切线斜率1)0(='=f k ∴切线方程为x y =.....3分(2)令11)1[ln()()(xx e x f x g x+++='=则)1(112)1[ln()(2x x x e x g x+-+++='.......................4分令2)1(112)1ln()(x x x x h +-+++=,则0)1(1)1(2)1(211)(3232>++=+++-+='x x x x x x h ,∴)(x h 在),0[+∞上单调递增,.........6分∴01)0()(>=≥h x h ∴0)(>'x g 在),0[+∞上恒成立∴)(x g 在),0[+∞上单调递增..7分(3)解:待证不等式等价于)0()()()(f t f s f t s f ->-+,令)0,()()()(>-+=t x x f t x f x m ,只需证)0()(m x m >..........8分∵)1ln()1ln()()()(x e t x ex f t x f x m x tx +-++=-+=+)()(1)1ln(1)1ln()(x g t x g xe x e t x e t x e x m x x t x tx -+=+-+-+++++='++.........10分由(2)知11)1[ln()()(xx e x f x g x+++='=在),0[+∞上单调递增,∴)()(x g t x g >+...........11分∴0)(>'x m ∴)(x m 在),0(+∞上单调递增,又因为0,>t x ∴)0()(m x m >,所以命题得证.....12分22.【解析】(1)()()()1ax ax f x xe ax e ''==+,.............1分当0a ≥时,则10ax +≥对任意[]0,2x ∈恒成立,即()0f x '≥恒成立.所以()f x 在[]0,2x ∈单调递增.则()f x 的最大值为()()2max 22a f x f e ==;.........2分当0a <时,令10ax +=,即1x a=-当()10,2a -∈,即12a <-时,当10,x a ⎡⎫∈-⎪⎢⎣⎭时()0f x ¢>,()f x 在10,a ⎡⎫-⎪⎢⎣⎭上单调递增.当1,2x a ⎛⎤∈- ⎥⎝⎦时()0f x '<,()f x 在1,2a ⎛⎤- ⎥⎝⎦上单调递减,()max11f x f a ea ⎛⎫=-=-⎪⎝∴ ⎭.3分当[)12,a -∈+∞即102a -≤<时,10ax +≥对任意[]0,2x ∈恒成立,即()0f x '≥恒成立,所以()f x 在[]0,2x ∈单调递增.则()f x 的最大值为()()2max 22a f x f e ==;........4分综上所述:当12a ≥-时()()2max 22a f x f e ==;当12a <-时()max11f a ea f x ⎛⎫=-=- ⎪⎝⎭...5分(2)因为()f x 在1x =处的切线与x 轴平行,所以()()110a f a e '=+=,则1a =-,即()()1x f x x e -'=-.当1x <时,()0f x ¢>,则()f x 在(),1∞-上单调递增当1x >时,()0f x '<,则()f x 在()1,+∞上单调递减.又因为0x <时有()0f x <;0x >时有()0f x >,根据图象可知,若()()12f x f x =,则有1201x x <<<;......7分要证21x x e e >,只需证211ln x x >-;...............8分又因为101x <<,所以11ln 1x ->;因为()f x 在()1,+∞上单调递减,从而只需证明()()()1211ln f x f x f x =<-,只需证()()()1111ln 1ln 11111ln 1ln 1ln x x x x x x e e x e eex ---<--==.只需证()1111ln 1,01x e x x -+<<<.......................10分设()()()1ln ,0,1th t e t t -=+∈,则()11tte h t t--'=.由()f x 的单调性可知,()()11f t f e≤=.则1t te e -≤,即110t te --≥.所以()0h t '>,即()h t 在()0,1t ∈上单调递增.所以()()11h t h <=.从而不等式21x x e e >得证............12分。
广东省东莞市六校2025届高三下学期联考英语试题含解析

广东省东莞市六校2025届高三下学期联考英语试题请考生注意: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.Students are always interested in finding out _______ they can go with a new teacher.A.how far B.how soon C.how often D.how long2.What he liked to do was to take an idea and ______ it by finding every possible consequence.A.squeeze B.wrestleC.switch D.shrink3.—What did he do in return for free ________ and food offered by the kind couple?—He helped their son with his lessons.A.conservation B.admissionC.accommodation D.immigration4.Computer-controlled robots are taking over jobs in many industries, which used to be done _______. A.artificially B.manuallyC.comprehensively D.gradually5.Patrick waited ________ all the luggage was cleared, but his never appeared.A.until B.beforeC.when D.while6.A storm buried Illinois under several inches of snow on Tuesday,______at least 100 people dead in traffic accidents. A.to leave B.leaveC.left D.leaving7.A large number of excellent films ______ all over the world over the past decades.A.have produced B.have been producedC.were produced D.produced8.You have a big mouth, Tom. You have told everybody the secret.A.can’t B.must n’tC.shouldn’t D.mightn’t9._____ working ability,you are no worse than the others,it is just you who don’t put your heart in your work.A.In favor of B.In honor of C.In terms of D.In case of10.Though Professor Liu ____ in New York for seven years, he has never regretted moving back to Shanghai, his hometown.A.lived B.has lived C.had lived D.was living11.When they first came to the city, my parents often went to neighbors for a talk, just as they ________ in the countryside.A.will do B.had doneC.have done D.were doing12.Tianjin soccer fans wonder how long it will be ______ the popular soccer star —Sunke can appear in the fields in Tianjin as a member of Tianjin Tianhai soccer team.A.before B.sinceC.until D.where13.—Next week I will go to a job interview. will you give me some suggestions?—Smiling is a great way to make yourself ________.A.stand out B.turn outC.work out D.pick out14.John's success has nothing to do with good luck. It is years of hard work _________ has made him what he is today. A.what B.whichC.where D.that15.I had hardly rung the bell ________ the door was opened suddenly, and my son rushed out to greet me. A.before B.untilC.as D.since16.Although the test ________ look like a simple one, great care is needed.A.may B.must C.should D.need17.She doesn’t speak our language, _____ she seems to understand what we say.A.for B.and C.yet D.or18.He’s quite _________, but I can’t imagine him as president of such a large listed company.A.enthusiastic B.generousC.competent D.sympathetic19.-Are you ready for the history test tomorrow?-No,I wish I_____the clock back.A.had turned B.could turnC.will turn D.would have turned20.We really emphasize the importance of putting______safeguards to prevent children’s identities fr om falling in wrong people’s hands.A.in place B.in vainC.in question D.in earnest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届广东省普通高中高三下学期二模考试英语试题及解析

细节理解题。根据Vivienne Westwood — Get a Life标题下的内容The iconic fashion designer is the subject of this crossover exhibition of Chinese contemporary art and eco-friendly fashion inspired by Westwood's strong stance towards a climate revolution. Participating artists include Sun Xun, Wu Junyong and Zhang Ruyi. 这位标志性的时装设计师是这次中国当代艺术与环保时尚交叉展览的主题,这次展览的灵感来自韦斯特伍德对气候变化的坚定立场。 参展艺术家包括孙逊、吴俊勇及张如意。可知,这次展览的设计主题是中国当代艺术与环保时尚,所以对于环保主义者而言,这个节日会吸引他们。选项D符合题意。故选D项。
June 21 ~ 22, 2-6p.m. (Sun.) 10a. m. ~ 2p. m. (Mon.), free entry. Shanghai Racquet Club.
Vivienne Westwood — Get a Life
The iconic fashion designer is the subject of this crossover exhibition of Chinese contemporary art and eco-friendly fashion inspired by Westwood's strong stance towards a climate revolution. Participating artists include Sun Xun, Wu Junyong and Zhang Ruyi.
2023届广东六校联盟(广东省实验中学等)高三第二次联考英语

广东六校联盟2023届高三第二次联考英语命题:珠海一中审题:珠海一中本试卷共8 页,共47 小题,满分120 分。
考试用时120 分钟注意事项:1.答题前, 考生务必用黑色字迹的钢笔或签字笔将自己的姓名和考生号、考场号、座位号填写在答题卡上。
并用 2B 铅笔将对应的信息点涂黑,不按要求填涂的,答卷无效。
2.选择题每小题选出答案后,用 2B 铅笔把答题卡上对应题目选项的答案信息涂黑,如需改动,用橡皮擦干净后,再选涂其他答案,答案不能答在试卷上。
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不按以上要求作答的答案无效。
4.考生必须保持答题卡的整洁,考试结束后,只需将答题卡交回。
第二部分阅读(共两节,满分50 分)第一节(共15 小题;每小题 2.5 分,满分37.5 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 new books to readThe books that are included in this list can meet your reading needs at any time of year.Nobody Will Tell You This but MeBess KalbIn this book, the author shares the advice her beloved grandmother Bobby left her. Bobby was apowerful woman who should never be underestimated, and she w as very knowledgeable about the family’s traditions and secrets. The book proves that family bonds can endure through generations and beyond death.We Came Here to ShineSusie Orman SchnallWe Came Here to Shine focuses on the strong female friendship between an aspiring journalist and an unlucky actress at the 1939 New York World’s Fair. Leaning on each other, these two ambitious women struggled against adversity(困境)at a time when women had little say.A Star Is BoredByron LaneFavored by television star Jonathan Van Ness, this novel is partly based on the author’s experiences as the former personal assistant to Carrie Fisher, a legendary American actress. The book follows Charlie Besson, the new assistant to the Hollywood icon, Kathi Kannon. Their three-year journey together is an unforgettable adventure that is funny, heartbreaking, and hopeful.Fast GirlsElise HooperThe story in Fast Girls took place during the 1936 Berlin Olympics, where Betty Robinson, Louise Stokes, and Helen Stephens overcame di fficult pasts to attain Olympic glory as the world’s fastest female athletes. Beyond the athletic journey, they also aimed to challenge the social standards of what females can achieve.21. Who is the character in Bess Kalb’s book?A. Bobby.B. Susie Orman Schnall.C. Carrie Fisher.D. Betty Robinson.22. What kind of book is A Star Is Bored?A. A biography.B. An industry report.C. A real-life based novel.D. A fictional adventure story.23. Which of the following books will you choose if you are interested in sports?A. We Came Here to ShineB. Nobody Will Tell You This but MeC. A Star Is BoredD. Fast GirlsBI enjoy throwing stuff away. I’d love to go full minimalism (极简主义), but my wife and two teenage kids do not share my dream of a house with almost nothing in it. I have tried. When the kids were little, I taught them my two favorite games –“Do We Need It?” and “Put It in Its Place”– and made them play every few months. Their enthusiasm never matched mine.If I’m going to be honest, my own tidying skills are not as great as I’d like. My “discarded” pileis never quite the trash mountain I want because I make up excuses for why things are useful. I consider this unhealthy. I want to be better at moving on.So, this time I found help –the classics for people like me: The Life-Changing Magic of Tidying Up, by Marie Kondo. Kondo’s commitment to her craft is astonishing. Her philosophy is only to keep things you love. Can I go full Kondo? I will try. One central idea is to clean by category. You start by collecting all clothes and gathering them together for consideration. It makes you rethink how you organize. Next, hold each item and ask if it brings you joy. This way you’re choosing what to keep. And that’s how I find myse lf with all my clothes on my bedroom floor. My wife walks by and gives me a look that says I’m nuts. She’s probably not wrong.Somewhere near the bottom of this chaos is my special jacket. I move through the pile: pants, shirts, suits and shoes. Then my la st category: jackets. I haven’t worn the thing in about 30 years. Somehow, it has survived. Now that I’m striving to follow Kondo – surely, its time has come?I hold it in my hand. There is a tear just below the collar that widens as I hold it. It’s litera lly falling apart. Will I ever wear it again? Not a chance. Does it feel good to wear? Does it bring me joy? Actually, yes. At this moment, my daughter walks in. She asks about the jacket. I tell her the story. She thinks I should keep it. It’s cool and unique and full of memories. She is arguing that nostalgia (怀念) is the very reason.I’m not entirely convinced by my daughter’s arguments. I believe in looking ahead, not backward. Nevertheless, sometimes it’s hard to let go. So I gently place the jacket on the “keep” pile.24. What does the underlined word “discarded” probably mean in Paragraph 2?A. adjustedB. reservedC. abandonedD. tidied25. What drives the author to read The Life-Changing Magic of Tidying Up?A. To learn how to categorize.B. To improve his tidying skills.C. To persuade his family members.D. To develop passion for minimalism.26. What is the attitude of the author’s family members toward minimalism?A. They don’t understand itB. They completely support it.C. They are strongly opposed to it.D. They are less passionate about it.27. What’s the best title for the text?A. Knowing when to let goB. Classifying what you loveC. Throwing worn-out clothesD. Keeping valuable possessionsCThe world’s biggest elect ric vehicle — a 45-ton mining dump trucknamed theeDumper —may have to give up its throne. The newcomer, powered with bothelectricity and a reserve of hydrogen fuel, is going tosteal that title as the largestelectric mining truck.London-based Anglo American is developing the beast of a machine— it weighs290 tons — as part of its sustainable mining vision. Theconceptual work is done,but U.K-based Williams Advanced Engineeringwill bring the truck to life. The ideais to replace the vehicle’s diesel engi ne (柴油机) with a high- power modular lithium-ion battery (锂电池). “We are delighted to be involved in this innovative andexciting project which shows the potential of battery technology that can adapt to increased demands, from automotive and motorsport to ‘heavy duty’ industrial applications,” Craig Wilson, managingdirector of Williams Advanced Engineering, said.While the eDumper — a mining truck used to move stones from the sides of mountains inSwitzerland —relies entirely on pure electricity and pure physics for power, the Anglo American truck will use both a lithium-ion battery and a hydrogen fuel cell (电池) module. Altogether, the new truck will have over 1,000 Kilowatt hours of energy storage.Hydrogen fuel is a clear fuel that produces only water as a by-product when consumed in a fuelcell. It’s typically produced from natural gas, nuclear power, or renewable wind and solar power. Adding hydrogen fuel cells to the vehicle’s battery will allow the truck to run for longer periods of time without rechargin g.There’s also a third type of power that comes into play with the Anglo American truck: kinetic (动力的) energy created through the process of regenerative braking (再生制动系统). When an electric vehicle — be it the Anglo American truck, or the eDumper —rolls down a hill, that movement creates electrical energy for the battery as you brake. The electric motors power the car through the battery’s stored energy, but can also become mini generators that return some energy back to the battery.After Anglo American finishes test trials with the truck, the firm will conduct studies to understand how the truck’s power units can be used to provide energy storage in other applications.28. What can be known about “the eDumper”?A. It weighs more than 290 tons.B. It is powered by hydrogen fuel.C. It will no longer be the largest electric truck.D. It will discourage buyers for being expensive.29. What can be inferred from Craig Wilson’s words?A. Battery technology is the key to updating vehicles.B. Battery technology is the basis of manufacturing trucks.C. The development of the lithium-ion battery is limited.D. The future of the lithium-ion battery is promising.30. What is the benefit of adopting hydrogen fuel cells?A. It can save a lot of money.B. Vehicles become more eco-friendly.C. It has no environmental impact at all.D. Vehicles no longer need to be recharged.31. According to paragraph 5, which of the following can be a feature of regenerative braking?A. Autonomous braking.B. Energy transformation.C. Simple operation.D. zero-carbon emission.DDreams, according to Carl Jung, reveal a certain amount of reality hidden during waking consciousness. In Jungian philosophy, the conflict and chaos experienced in dreams finally bring order to our lives. While Jung’s mystical theories are debatable, he was not mistaken about the importance of dreaming. A growing number of reports show that a continuous lack of dreaming is damaging our waking hours in many ways.This trend is causing damage to our immune and metabolic (新陈代谢的) systems, let alone theelectronic products that keep us up late at night are ruining our sleep patterns, which has long-term consequences on our memory system. One study showed that not allowing mice to have adequate amounts of REM (Rapid Eye Movement) sleep, the stage in which we dream, the mice couldn’t strengthen memories.You might think this is just a sleep problem, but dreaming is inseparable from our nighttime rest. We sleep in cycles (周期), each lasting about 90 minutes; in a sleep cycle, we go through non-REM sleep before hitting REM. As the night progresses, REM sleep periods increase in length while deep sleep (one of the stages of non-REM sleep) decreases. The longer we sleep, the more time we spend in REM, which is why we are often dreaming when waking up in the morning. If we sleep less than seven hours, however, it becomes harder to achieve this level of REM.The combination of sleeping and dreaming acts as an emotional stabilizer. We recover from emotional hurt faster when w e sleep and dream properly. However, we’re not getting enough sleep tocycle through the stages to take advantage of this natural circadian anti-depressant (抗抑郁剂)— dreams. Instead, we get depressed and turn to alcohol or medicines to get to sleep, which only makesthings worse because even one drink leads to late REM while anti-depressants promote deep sleep atthe expense of REM.We’re paying for this lack of dreaming in many ways. For example, a 2021 study stated that compared with quiet rest and non-REM sleep, REM promoted the formation of associative networksand the integration (整合) of unassociated information. V olunteers that experienced more REM sleepwere better equipped for solving problems requiring creative solutions.Rowan Hooper, the managing editor at New Scientist, writes that dreams that include an “emotional core” appear to be a main function of REM sleep and that we should look at sleep patterns as seriously as we do diet and exercise habits.32. What’s Car Jung’s view about dreams?A. They cause chaos.B. They damage immunity.C. They reveal secrets.D. They mirror reality.33. Why is the sleep process explained in paragraph 3?A. To show a dream mainly occurs during REM sleep.B. To prove the minimum sleep time should be seven hours.C. To prove dream problems and sleep problems are attached.D. To show people often dream when waking up in the morning.34. What conclusion can be inferred from paragraph 5?A. Dreaming promotes creativity.B. Dreaming helps fight depression.C. The brain still receives new information during REM sleep.D. The brain is paying the price for having more non-REM sleep.35. What’s the main idea of the passage?A. The importance of sleep lies in dreams.B. The absence of dreams is terrible for us.C. Dreaming patterns are more important than we realize.D. Dreaming has mystical power of strengthening memories.第二节(共 5 小题;每小题 2.5 分, 满分12.5 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。