【天津市2014届高三寒假作业(5)英语 Word版含答案
天津市2014届高三上学期期末五校联考 政治 Word版含答案
2013-2014届学年度第一学期期末五校联考高三政治试卷第I卷（共50分）注意事项：本卷共25题，每题2分，共50分。
在每题列出的四个选项中，只有一项是最符合题目要求的。
1.2013年夏天，我国多地持续高温让人难熬，但火辣辣的太阳却烤出了一个旺销的空调市场。
(S1为高温前曲线,S2为高温后曲线)。
不考虑其它因素,下图能正确反映这一经济现象的是A.①③B.①④C.②③D.②④2.中央出台“八项规定”、“六项禁令”，号召厉行节约、反对浪费。
部分高端餐饮企业营业额大幅下降，与此同时大众化餐饮发展势头强劲。
这表明①靠奢侈浪费形成的畸形消费是不可持续的②紧缩消费符合我同现阶段的经济发展状况③餐饮企业应主动转型，调整经营策略④消费对生产的反作用A.①②④B.①②③C.②③④D.①③④3.2013年高校毕业生达到699万，比去年又有新的增加，就业压力进一步加大。
下列对大学生提出的就业建议，你认为最恰当的是A.转变就业观念，积极适应市场需求B.提高自身职业技能，等待国家安排C.根据个人喜好、特长选择相关职业D.坚持多种方式就业，选择体面职业4.经济生活是复杂的，同一现象或措施，有时会产生截然不同的两种效果。
下列表述中，正确体现经济生活中“双刃剑”现象的是①经济全球化推动社会生产力发展，同时也加剧了世界经济发展不平衡②人民币升值有利于我国吸引外资，同时也导致出口贸易不利③纸币发行过量过多易引起通货膨胀，纸币发行不足会导致通货紧缩④提高最低工资标准有利于增加劳动者收入，同时也会增加企业经营成本A.①②B.①④C.②③D.③④5.初次分配和再分配都要兼顾效率和公平，再分配更加注重公平，从而实现发展成果由人民共享。
下列举措中体现再分配更加注重公平的是①某市企业最低工资标准由每月1260元调整为1400元②某公司建立健全根据经营管理绩效、风险和责任确定薪酬的制度③某地民政局免费为60周岁以上的低保对象购买意外伤害保险④某省给予社会办托老所的床位每张每月300元财政补贴A.①②B.①③C.②④D.③④6.2013年下半年，我国综合运用各种手段对国民经济进行宏观调控，促进国民经济持续健康发展。
天津市2014届高三上学期期末五校联考 地理 Word版含答案
2013-2014学年度第一学期期末五校联考高三地理试卷第Ι卷（选择题）本卷共34小题，每小题1.5分，共51分。
在每题给出的四个选项中，只有一项是符合题目要求的。
2009年新疆番茄酱总产达到l01.83万吨，成为继美国、意大利之后的世界第三大番茄酱产区，第一大出口国。
读世界主要番茄酱生产国原料品质情况和2010年价格比较表，1．番茄酱生产国中，番茄生产最主要的共同优势条件是A．劳动力丰富B．光照充足，昼夜温差大C．降水丰沛，雨热同期D．土壤肥沃2．中国新疆番茄酱的竞争能力高，是因为A．科技投入大B．接近中亚市场C．质量好、价格低D．机械化程度高3．图1中123456各点的位置，对应在下面的等高线地形图上正确的是A．①③⑤B．②④⑤C．③④⑥D．①②⑥图2为30°N附近沿海某地等高线地形图和地层示意图，R河流正值汛期。
读图2回答4～6题。
4．Q 地海拔可能为A ．400米B ．600米C ．800米D ．1000米5．此季节，该地区A ．受西风带控制B ．河流自东向西注入海洋C ．水循环较活跃D ．山麓常绿硬叶林枝繁叶茂 6．关于图示地区，叙述正确的是A ．向斜成谷，背斜成山B ．①处比②处更可能找到石油C ．②处比①处建地下隧道更合理D ．图示地貌由内力作用形成 图3为2000～2008年我国东部某市人口增长率变动图，读图3回答7～8题。
7．该时段内，该市人口总量最大的年份是A ．2003年B ．2005年C ．2007年D ．2008年 8． 2004年后人口机械增长率开始明显下降的原因是该市:A ．人口自然增长率提高B ．出现逆城市化C ．城市居住用地紧张D ．产业转移和升级网络鲜花速递是指送花人利用网络订购鲜花，连锁店直接把花送到收花人手中，是鲜花销售的新形式。
根据材料完成9～10题。
9．网络鲜花快递，将使鲜花种植业A ．增加生产成本B ．扩大销售市场C ．改变生产方式D ．改变种植制度 10．与传统的鲜花销售方式相比，网络鲜花速递图2图3A．促进了技术革新和产品升级换代B．使生产企业不必致力于市场开拓C．减少了营销环节，销售成本降低D．增加了商业网点布局的空间限制图4中，A为南疆公路旁的草方格沙障，B为行走在沙丘上的驼队，C为兰州郊区种植白兰瓜的砂田（含砂砾层）。
高三英语寒假作业：(四)(Word版含答案)
高三英语寒假作业（四）第一部分阅读理解（共两节，满分40分）第一节(共15小题；每小题2分，满分30分)阅读下列列短文，从每题所给的四个选项(A、B、C和D)中,选出最佳选项。
并在答题卡上将该选项涂黑．AOne of my wonderful memories is about a Christmas gift. Unlike other gifts, it came without wrap(包装).On September 11th, 1958, Mum gave birth to Richard. After she brought him home from hospital, she put him in my lap, saying. "I promised you a gift, and here it is." What an honor! I turned four a month earlier and none of my friends had such a baby doll of their own. I played with it day and night. I sang to it. I told it stories. I told it over and over how much I loved it!One morning, however, I found its bed empty. My doll was gone! I cried for it. Mum wept and told me that the poor little thing had been sent to a hospital. It had a fever. For several days, I heard Mum and Dad whispering such words as "hopeless", "pitiful", and "dying", which sounded ominous.Christmas was ing. "Don’t expect any presents this year." Dad said, pointing at the socks I hung in the living room. "If your baby brother lives, that'll be Christmas enough." As he spoke, his eyes were filled with tears. I'd never seen him cry before.The phone rang early on Christmas morning. Dad jumped out of bed to answer it. From my bedroom I heard him say. "What? He's all right?" He hung up and shouted upstairs. ―The hospital said we can bring Richard home!""Thank God.'" I heard Mum cry.From the upstairs window, I watched my parents rush out to the car. I had never seen them happy. And I was also full of joy. What a wonderful day! My baby doll would be home. I ran downstairs. My sacks still hung there flat. But I knew they were not empty; they were filled with love!1. What happened to the author on September 11 1958?A. He got a baby brotherB. He got a Christmas giftC. He became four years oldD. He received a doll2.What does the underlined word ―ominous‖ in Paragraph 3 probably mean？A. Impossible.B. BoringC. DifficultD. Fearful3. Which word can best describe the feeling of the father when Christmas was ing?A. Excitement.B. Happiness.C. Sadness.D. Disappointment.BAmerican researchers found females are the more talkative sex because of a special ―language protein‖ in the brain.The study, conducted by neuroscientists(神经学家) and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein. The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats that were males. Their findings came after it was previously claimed that ladies speak about 20,000 words a day –over 13,000 more than men. ―This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals,‖ said Prof Margaret McCarthy, who led the study. In their study, the researchers attempted to determine what might make male rats more vocal than their female friends.They separated four-day-old rats from their mothers and then counted the number of times they cried out in the ―ultrasonic（超声波的）range‖, the frequencies higher than humans can hear, over five minutes. While both sexes called out hundreds of cries, the males called out twice as often, they found. But when the pups were returned to their mother’s cage, she fussed over her sonsfirst. Tests conducted on the parts of the brain known to be associated with vocal calls showed the male pups have up to twice as much Foxp2 protein as the females. The researchers then increased the production in the brains of female pups and reduced it in males. This led to the female rats crying out more often and their mothers showing more interest to them. In contrast, males became less ―talkative‖.The researchers then tested samples from ten children, aged between three and five, which showed that females had up to 30 per cent more of the Foxp2 protein than males, in a brain area key to language in humans.―Based on our observations, we assume higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex,‖ said Prof McCarthy.―Our results imply Foxp2 as a component (成分)of the neurobiological basis of sex differences in vocal communication in mammals.‖1. From the second paragraph, we can learn that ________.A. women always speak more words than menB. men and male rats have low levels of language proteinC. women and male rats have similar levels of Foxp2D. McCarthy isn’t the first to find females more talkative2. The underlined phrase ―fussed over‖ in the third paragraph probably means______.A. paid attention toB. related toC. put pressureon D. counted on3. The researchers carried out the experiments on rats in order to _______.A. test which part of the brain is key to language in rats and humansB. prove the levels of Foxp2 protein in humans and rats are differentC. determine the reason why female rats are more talkative than male ratsD. discover the association between Foxp2 protein and vocal communication4. Which of the following can be the best title for the passage?A. Tests on humans and ratsB. Why women are the talkative sexC. Sex differences in Foxp2 proteinD. Foxp2 proteinCDear Reader,I receive many letters from children and can’t answer them all—there wouldn’t be time enough in a day. That is why I am sending you this printed reply to your letter. I’ll try to answer some of the questions that are commonly asked.Where did I get the idea for Stuart Little and for Charlotte’s Web? Well, many years ago I went to bed one night in a railway sleeping car, and during the night I dreamed about a tiny boy who acted rather like a mouse. That’s how the story of Stuart Little got started.As for C harlotte’s Web, I like animals and my barn（谷仓）is a very pleasant place to be, at all hours. One day when I was on my way to feed the pig, I began feeling sorry for the pig because, like most pigs, he was doomed to die. This made me sad. So I started thinki ng of ways to save a pig’s life. I had been watching a big grey spider at her work and was impressed by how clever she was at weaving. Gradually I worked the spider into the story that you know, a story of friendship and salvation（拯救）on a farm. Three years after I started writing it, it was published. (I am not a fast worker, as you can see.)Sometimes I’m asked how old I was when I started to write, and what made me want to write. I started early—as soon as I could spell. In fact, I can’t remember any time in my life when I wasn’t busy writing. I don’t know what caused me to do it, or why I enjoyed it, but I think children often find pleasure and satisfaction in trying to set their thoughts down on paper, either in words or in pictures. I was no good at drawing, so I used words instead. As I grew older, I found that writing can be a way of earning a living.Some of my readers want me to visit their school. Some want me to send a picture, or an autograph, or a book. And some ask questions about my family and my animals and my pets. Much as I’d like to, I can’t go visiting. I can’t send books, either—you can find them in a bookstore or a library. Many children assume that a writer owns (or even makes) his own books. This is not true—books are made by the publis her. If a writer wants a copy, he must buy it. That’s why I can’t send books. And I do not send signatures—I leave that to the movie stars. I live most of the year in the country, in New England. From our windows we can look out at the sea and the mountains. I live near my married son and three grandchildren.Are my stories true, you ask? No, they are imaginary tales, containing fantastic characters and events. In real life, a family doesn’t have a child who looks like amouse; in real life, a spider doesn’t spin words in her web. In real life, a swan doesn’t blow a trumpet. But real life is only one kind of life—there is also the life of the imagination. And although my stories are imaginary, I like to think that there is some truth in them, too—truth about the way people and animals feel and think and act.Yours sincerely：E.B. White 1．The author wrote the letter because _________.A．he is not a fast workerB．he was invited to answer the questionsC．he didn’t have enough time to answer all the lettersD．he felt sorry for not being able to send books to his readers2．What pr obably caused the writer to get interested in writing children’s book?A．Writing can be a way to earn his living. B．The fact that he was not good at drawing.C．His mother influence on his childhood. D．The instinct of children. 3．From Para.5, we can learn that ＿＿＿＿.A．many famous people like to visit schoolsB．movie stars will send autographs to readersC．many people think authors have copies of their own booksD．the author lives with his married son and three grandchildren4．In the last paragraph, the author is trying to tell us ____ .A．we only have one kind of lifeB．there is no truth in imaginary talesC．imaginary tales are based on our true lifeD．fantastic characters and events only exist in imaginary talesDA fellow speaker from California named Geri flew to Japan, in her favorite jeans and a casual jacket, to give her first speech. Fourteen hours later, four perfectly dressed Japanese gentlemen greeted her at Narita Airport. Smiling and bowing low, they handed her their business cards. With her bag in one hand, Geri took their cards with the other. She thanked them, glanced briefly at the cards, and put them into her jeans pocket quickly.When the five of them arrived at the hotel, they invited Geri to tea in the lobby (大厅). While sipping tea, the gentlemen presented her with a small gift which she eagerly opened. She was thrilled with the gift and shouted excitedly, ―Oh, it’s beautiful!‖At this point, the four Japanese gentlemen stood up and, bowing only very slightly, said ―Sayonara‖ and left immediately. Poor Geri was left astonished. What did she do wrong?Everything! Her jeans were the first gaffe. Even if you’re coming off a bicycle in Japan, you do not meet clients (客人) casually dressed. The second mistake was Geri’s handling of their business cards rudely. In Japan, the business card is one of the most important communicative tools. It is always presented and accepted respectfully with both hands. However, Geri put their cards away much too quickly. In Japan, people use business cards as a conversation starter. You chat about each other’s cards and work and do not put theirs away until they gently and respectfully place yours in safekeeping. Putting it carelessly into her jeans pocket was the ultimate disrespect.Then, the fourth horror of horrors was that Geri should not have opened the gift in front of her clients. In a land where saving face is critical, it would be embarrassing to discover the gift they gave was not as nice as the one they received. What is worse, Geri hadn’t even given them a gift!1. In the four Japanese gentlemen’s eyes, Geri took their cards _____________.A. excitedlyB. embarrassinglyC. politelyD. disrespectfully2. Why did the four Japanese gentlemen leave Geri suddenly?A. Because they couldn’t bear Geri’s behavior any longer.B. Because they had finished the task.C. Because Geri had something more important to do.D. Because Geri felt embarrassed.3. What does the underlined word ―gaffe‖ in Paragraph 3 probably mean?A. ignoranceB. sadnessC. mistakeD. carelessness4. The third mistake Geri made was that she _____________.A. used her own card as a conversation starterB. kept her clients’ cards in a wrong placeC. took her clients’ cards with one handD. met her clients in jeans第二节（共5小题：每小题2分，满分10分）【题文】根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
高三英语寒假作业阅读理解
为⼤家整理的⾼三英语寒假作业阅读理解⽂章,供⼤家学习参考！更多最新信息请点击ACompassion is a desire within us to help others. With effort, we can translate compassion into actions. An experience last weekend showed me this is true. I work part-time in a supermarket across from a building for the elderly. These old people are out main customers, and it’s not hard to lose patience over their slowness. But last Sunday, one aged gentleman appeared to teach me a valuable lesson. This untidy man walked up to my register(收款机)with a box of biscuits. He said he was out of cash (现⾦), had just moved into his room, and had nothing in his cupboards. He asked if we could let him have the food on trust. He promised to repay me the next day.I couldn’t help staring at him. I wondered what kind of person he had been ten or twenty years before, and what he would be like if luck had gone his way. I had a hurt in my heart for this kind of human soul, all alone in the world. I told him that I was sorry, but store rules didn’t allow me to do so. I felt stupid and unkind saying this, but I valued my job.Just then, another man, standing behind the first, spoke up. If anything, he looked more pitiable. “Change it to me, ” was all he said.What I had been feeling was pity. Pity is soft and safe and easy. Compassion, on the other hand, is caring in action. I thanked the second man but told him that was not allowed either. Then I reached into my pocket and paid for the biscuits myself. I reached into my pocket because these two men had reached into my heart and taught me compassion.56. The aged gentleman who wanted to buy the biscuits_________ .A.hoped to have the food first and pay laterB.promised to obey the store rulesC.forgot to take any money with himD.could not afford anything more expensive57. Which of the following best describes the old gentleman?A.kind and luckyB.friendly and helpfulC.poor and lonelyD.hurt and disappointed58. The writer acted upon the store rules because_________ .A.he felt no pity for the old gentlemanB.he considered the old man dishonestC.he expected someone else to pay for the old manD.he wanted to keep his present job59. What does the writer learn from his experience?A.Wealth is more important than anything elseB.Experience is better gained through practiceC.Obeying the rules means more than compassion.D.Helping others is easier said than doneBBlamelessI was a freshman in college when I met the Whites. They were completely different from my own family, yet I felt at home with them immediately. Jane White and I became friends at school, and her family welcomed me like a long-lost cousin.In my family, it was always important to place blame when anything bad happened.“Who did this? ”my mother would scream about a dirty kitchen.“This is all your fault, Katharine, ”my father would insist when the cat got out or the dishwasher broke.From the time we were little, my sister, brothers and I told on each other. We set a place for blame at the dinner table.But the Whites didn’t worry about who had done what. They picked up the pieces and moved on with their lives. The beauty of this was driven home to me the summer Jane died.In July, the White sisters and I decided to take a car trip from their home in Florida to New York. The two older sisters, Sarah and Jane, were college students, and the youngest, Amy, had recently turned sixteen. Proud of having a new driver’s license(驾照)，Amy was excited about practicing her driving on the trip. She showed off her license to everyone she met. The big sisters shared the driving of Sarah’s new car during the first part of the trip, but when they reached less crowded areas, they let Amy take over. Somewhere in South Carolina, we pulled off the highway to eat. After lunch, Amy got behind the wheel. She came to a crossroads with a stop sign. Whether she was nervous or just didn’t see the sign no one would ever know, but Amy continued into the crossroads without stopping. The driver of a large truck, unable to stop in time, ran into our car.Jane was killed immediately.I was slightly injured. The most difficult thing that I’ve ever done was to call the Whites to tell them about the accident and that Jane had died. Painful as it was for me to lose a good friend, I knew that it was far worse for them to lose a child.When Mr. and Mrs. White arrived at the hospital, they found their two daughters sharing a room. Sarah had a few cuts on the head; Amy’s leg was broken. They hugged(拥抱)us all and cried tears of sadness and of joy at seeing their daughters. They wiped away the girls’ tears and made a few jokes at Amy as she learned to use her crutches(拐杖).To both of their daughters, and especially to Amy, over and over they simply said, “We’re so glad that you’re alive. ”I was astonished. No blame. No accusations.Later, I asked the Whites why they never talked about the fact that Amy was driving and had run a stop sign.Mrs. White said, “Jane’s gone, and we miss her terribly. Nothing we say or do will ever bring her back. But Amy has her whole life ahead of her. How can she lead a full and happy life if she feels we blame her for her sister’s death? ”They were right. Amy graduated from the University of California and got married several years ago. She works as a teacher of learning-disabled students. She’s also a mother of two little girls of her own, the oldest named Jane.60. How did the accident occur?A. Amy didn’t know what to do when she saw the stop sign.B. Amy didn’t slow down so their car ran into a truck.C. Amy didn’t stop at a crossroads and a truck hit their car.D. Amy didn’t get off the highway at a crossroads.61. The Whites did not blame Amy for Jane’s death because _____.A. Amy was badly injured herself and they didn’t want to add to her painB. they didn’t want to blame their children in front of othersC. they didn’t want Amy to feel ashamed and sorry for the rest of her lifeD. Amy was their youngest daughter and they loved her best62. From the passage we can learn that _____.A. Amy has lived quite a normal lifeB. Amy has never recovered from the shockC. Amy changed her job after the accidentD. Amy lost her memory after the accidentCA rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below 16℃.Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate.Without the forest cover，these areas would reflect more heat into the atmosphere，warming the rest of the world.Losing the rainforests may also influence wind and rainfall patterns，potentially causing certain natural disasters all over the world.In the past hundred years，humans have begun destroying rainforests in search of three major resources(资源)：land for crops，wood for paper and other products，land for raising farm animals.This action affects the environment as a whole.For example，a lot of carbon dioxide(⼆氧化碳)in the air comes from burning the rainforests.People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.There are two main reasons for this.Firstly，when people cut down trees，generally they can only use the land for a year or two.Secondly，cutting large sections of rainforests may provide a good supply of wood right now，but in the long run it actually reduces the world's wood supply.Rainforests are often called the world's drug store.More than 25% of the medicines we use today come from plants in rainforests.However，fewer than 1%of rainforest plants have been examined for their medical value.It is extremely likely that our best chance to cure diseases lies somewhere in the world's shrinking rainforests.63.Rainforests can help to adjust the climate because they ______.A.reflect more heat into the atmosphereB.reduce the effect of heat from the sun on the earthC.bring about high rainfall throughout the worldD.rarely cause the temperature to drop lower than 16℃64.What does the word“this”underlined in the third paragraph refer to?A.Humans have begun destroying rainforests.B.People have a strong desire for resources.C.We will lose much more than we can gain.D.Much carbon dioxide comes from burning rainforests.65.It can be inferred from the text that ______.A.we can get enough resources without rainforestsB.we will grow fewer kinds of crops in the gained landC.the level of annual rainfall affects wind patternsD.there is great medicine potential in rainforests66.What might be the best title for the text?A.Rainforests and the EnvironmentB.How to Save RainforestsC.How to Protect NatureD.Rainforests and Medical DevelopmentDThe Diet Zone: A Dangerous PlaceDiet Coke, diet Pepsi, diet pills, no-fat diet, vegetable diet… We are surrounded by the word “diet” everywhere we look and listen. We have so easily been attracted by the promise and potential of diet products that we have stopped thinking about what diet products are doing to us. We are paying for products that harm us psychologically and physically(⾝体上).Diet products significantly weaken us psychologically. On one level, we are not allowing our brain to admit that our weight problems lie not in actually losing the weight, but in controlling the consumption of fatty, high-calorie, unhealthy foods. Diet products allow us to jump over the thinking stage and go straight for the scale(秤)instead. All we have to do is to swallow or recognize the word “diet” in food labels.On another level, diet products have greater psychological effects. Every time we have a zero-calorie drink, we are telling ourselves without our awareness that we don’t have to work to get results. Diet products make people believe that gain comes without pain, and that life can be without resistance and struggle.The danger of diet products lies not only in the psychological effects they have on us, but also in the physical harm that they cause. Diet foods can indirectly harm our bodies because consuming them instead of healthy foods means we are preventing our bodies from having basic nutrients(营养成分). Diet foods and diet pills c o n t a i n z e r o c a l o r i e o n l y b ec a u s e t h ed ie t i n d u s t r y h a s c r e a t e d c h e m i c a l s t o p r o d u c e t h e s e w o n d e r p r o d u c t s . D i e t p r od u c t s m a y n o t be n u t r i t i o n a l , a n d t h e c h e m i c a l t h a t g o i n t o d i e t p r o d u c t s a r e p o t e n t i a l l y d a n g e r o u s . / p > p b d sf i d = " 1 4 1 " > N o w t h a t w e a r e a w a r e o f t h e e f f e c t s t h a t d i e t p r o d u c t s h a v e o n u s , i t i s t i m e t o s e r i o u s l y t h i n k a b o u t b u y i ng th e m . L o si n g w e i g h t l i e s i n t h e p o w e r o f m i n d s , n o t i n t h e p o w e r o f c h e m i c a l s . O n c e w e r e a l i z e t h i s , w e w i l l b e m u c h b e t t e r a b l e t o r e s i s t d i e t p r o d u c t s , a n d t h e r e f o r e p r e v e n t t h e p s y c h o l o g i c a l h a r m t h a t c o m e s f r o m u s i n g t h e m . / p > p b d s f i d = " 1 4 2 " > 6 7 . F r o m P a r a g r a p h 1 , w e l e a r n t h a t _ _ _ _ _ _ _ _ . / p > p b d s f i d = " 1 4 3 " > A . d i e t p r o d u c t s f a i l t o b r i n g o u t p e o p l e s p o t e n t i a l / p > p b d s f i d = " 1 4 4 " > B . p e o p l e a r e f e d u p w i t h d i e t p r o d u c t s / p > p b d s f i d = " 1 4 5 " > C . p e o p l e h a v e d i f f i c u l t y i n c h o o s i n g d i e t p r o d u c t s / p > p b d s f i d = " 1 4 6 " > D . d i e t p r o d u c t s a r e m i s l e a d i n g p e o p l e / p > p b d s f i d = " 1 4 7 " > 6 8 . O n e p s y c h o l o g i c a l e f f e c t o f d i e t p r o d u c t s i s t h a t p e o p l e t e n d t o _ _ _ _ _ . / p > p b d s f i d = " 1 4 8 " > A . h e s i t a t e b e f o r e t h e y e nj o y d i e t f o o d s / p > p b d s f i d = " 1 4 9 " > B . p a y a t t e n t i o n t o t h e i r o w n e a t i n g h a b i t s / p > p b d s f i d = " 1 5 0 " > C . w a t c h t h e i r w e i g h t r a t h e r t h a n t h e i r d i e t / p > p b d s f i d = " 1 5 1 " > D . t r y o u t a v a r i e t y o f d i e t f o o d s / p > p b d s f i d = " 1 5 2 " > 6 9 . I n P a r a g r a p h 3 , g a i n c o m e s w i t h o u t p a i n p r o b a b l y m e a n s _ _ _ _ _ _ . / p > p b d s f i d = " 1 5 3 " > A . l o s i n g w e i g h t i s e f f o r t l e s s / p > p b d s f i d = " 1 5 4 " > B . d i e t p r o d u c t s b r i n g n o p a i n / p > p b d s f i d = " 1 5 5 " > C . i t c o s t s a l o t t o l o s e w e i g h t / p > p b d s f i d = " 1 5 6 " > D . d i e t p r o d u c t s a r e f r e e f r o m c a l o r i e s / p > p b d s f i d = " 1 5 7 " > 7 0 . D i e t p r o d u c t s i n d i r e c t l y h a r m p e o p l e p h y s i c a l l y b e c a u s e s u c h p r o d u c t s _ _ _ _ _ _ . / p > p b d s f i d = " 1 5 8 " > A . l a ck b a s i c n u t r i e n t s B . a r e o v e r - c o n s u m e d / p > p b d s f i d = " 1 5 9 " > C . a r e s h o r t o f c h e m i c al s D . p r o v i d e t o om u c h en e r g y / p > / d i v > d i v i d = " f lo a t _ b t n " c l a s s = " " b d s f i d = " 1 6 0 " > b u t t o n c l a s s = " f l o a t _ b t n l e f t _ b t n " i d = " c op y _ b u t t o n " d a t a - c l i p b o a r d - a c t i o n = " c o p y " d a t a - c l i p b o a r d - t a r g e t = " # c o n t e n t - t x t " o n c l i c k = " d o _ c o p y ( ) ; " b d s f i d = " 1 6 1 " > e m c l a s s = " i c o n " b d s f i d = " 1 6 2 " >。
高三英语寒假作业：(九)(Word版含答案)
高三英语寒假作业（九）第一部分阅读理解（共两节，满分40分）第一节(共15小题；每小题2分，满分30分)阅读下列列短文，从每题所给的四个选项(A、B、C和D)中,选出最佳选项。
并在答题卡上将该选项涂黑．AA newly-published study has shown that loneliness can spread from one person to another, like a disease. Researchers used information from the Framingham Study, which began in 1948. The Framingham Study gathers information about physical and mental health, personal behavior and diet. At first, the study involved about 5,000 people in the American state of Massachusetts. Now, more than 12,000 individuals are taking part.Information from the Framingham Study showed earlier that happiness can spread from person to person. So can behaviors like littering and the ability to stop smoking.University of Chicago psychologist John Cacioppo led the recent study. He and other researchers attempted to show how often people felt lonely. They found that the feeling of loneliness spread through social groups.Having a social connection with a lonely person increased the chances that another individual would feel lonely. In fact, a friend of a lonely person was 52% more likely to develop feelings of loneliness. A friend of that person was 25% more likely. The researchers say this shows that a person could indir ectly be affected by someone’s loneliness.The effect was strongest among friends. Neighbors were the second most affected group. The effect was weaker on husbands and wives, and brothers and sisters. The researchers also found that loneliness spread more easily among women than men.The New York Times newspaper reports that, on average, people experience feelings of loneliness about 48 days a year. It also found that every additional friend can decrease loneliness by about five percent, or two and a half fewer lonely days.Loneliness has been linked to health problems like depression and sleeping difficulties. The researchers believe that knowing the causes of loneliness could help in reducing it.The study suggests that people can take steps to stop the spread of loneliness. They can do this by helping individuals they know who may be experiencing loneliness. The result can be helpful to the whole social group.1. What is TRUE about the Framingham Study?A. It was only conducted in 1948.B. It involves more than 12,000 participants.C. It was led by John Cacioppo.D. It showed that any behavior could spread.2. Which statement about the spread of loneliness is true?A. The spreading effect was the second strongest among friends.B. No spreading effect was found on husbands and wives.C. Women are more likely to be affected than men.D. Brothers are more easily affected than neighbors.3. What is the main idea of the passage?A. Actions should be taken to help lonely people.B. People feel lonely for many reasons.C. Ways to fight against loneliness.D. Lonely people can affect others.BEveryone would like to be a millionaire , a person with a lot of money, but can you imagine having over $30 million and only being 20 years old? Britney Spears from Kentwood, a small town in Louisiana, is only 20 years old. She is a world famous film star with not only $30 million but also a $2 million house in LA. At her young age, she can look after her family financially (经济上) all her life. This year is a big year for Britney. She is now on a 31-day tour of the US and every concert is a sell-out. That means she plays in front of a crowd of around 18,000 people every time. It’s a tiring schedule but brings her a lot. When touring, she goes to bed around 1 a.m. and then has a lie-in until 1 p.m. the next day. Her philosophy (人生观) is to take care of the body and relax but always make sure you work hard and have fun.Spears is not pleased with only touring and selling nearly 40 million records so she decided to step into the movie business and try a bit of acting. She made an appearance in “Austin Power 3”this year and she is filming a teenage light play that will come out in March 2003. In this movie, she has a starring role.For Britney, acting is another way to express herself and she is enthusiastic (热心的) about it all. If her movies are successful, her money in the bank is sure to grow by another few million dollars but she does it for the love, not the money, as she herselftells the reporters .1. We can infer (推断) from the text that most millionaires are __________.A. older than 20B. around 20C. in their 30sD. in their 40s2. The underlined word “you”in the first paragraph refers to __________.A. a person in generalB. a special personC. Britney SpearsD. a person interested in money3. Which of the following is not true according to the text?A. Though young, Britney can support her family now.B. While touring, Britney sleeps about 12 hours a day.C. The teenage comedy movie was based on Britney’s own story.D. Britney will be even richer with her movies successful.4. According to Britney Spears, she works __________.A. to be a great actressB. for the enjoymentC. for moneyD. to be more famousCBecause I am extremely vulnerable to both slick advertising and peer pressure, I’ve been thinking about getting an iPad. But here’s the problem: I’m cheap, and the iPad’s not. If I’m going to fork over at least $499 for a new device, I want to try it out and make sure it’s not just a larger, shinier version of my iPhone. But if I went to my local Apple Store, I’d get to spend only a few minutes testin g out the machine. I wanted more time than that, so I rented one for $15 a day from a guy on SnapGoods.The Internet start-up in Brooklyn runs on simple reasoning: there are people who want to borrow stuff –camping equipment, food processors, robot vacuums, etc. –and there are people who have stuff they want to lend. SnapGoods helps these two groups connect over the Web. SnapGoods is one of many sites that have sprung up to facilitate offline sharing. Some sites have a narrow, obvious focus (like ) while others are more obscure (Neighborhood Fruit helpspeople share what’s growing in their yards or find fruit trees on public land). But regardless of whether the sharing is free or involves a fee, these transactions often come with a stick-it-to-the-man attitude. ―Borrow these things from your neighbors,‖ reads one earnest request on , ―The owner-ship has SAILED!‖All of these sites are encouraging something academics call collaborative consumption – in other words, peer-to-peer sharing or renting. Renting something you don’t need to use very often makes a lot more sense than buying it and letting it collect dust in your garage. There’s a green aspect as well, since sharing helps cut down on overall use of resources. But one of collaborative consumption’s most surprising benefits turns out to be social. In an era when families are scattered around the country and we may not know the people down the street from us, sharing things –even with strangers we’ve just met online –allows us to make meaningful connections.―This isn’t just about saving the environment or saving a dollar,‖ says SnapGoods CEO Ron Williams, who came up with the idea after renting a stranger’s motorcycle via Craigslist. ―This is about saving yourself by makin g informed consumer decisions.‖I’m not sure if I got a thrill when I borrowed Goodwin’s iPad, but it did feel good to make a connection. In the end, though, I decided not to purchase an iPad. Sorry, Steve Jobs. I’m just not that into owning things anymore.1. Which of the following is NOT a reason for the author’s renting an iPad instead of buying one?A. The iPad is expensive and the author wants to make sure an iPad is worthy.B. He has already got an iPhone and expects to test the better quality of iPad.C. The local Apple Store only offters limited time to test out the machine.D. The iPad is so expensive that he cannot afford it.2. SnapGoods is a website which________.A. facilitates online sharingB. helps people borrow things from their neighborsC. connects borrowers and lenders for stuff sharingD. sells iPad online3. What is Ron Williams’ attitude towards collaborative consumption?A. FavorableB. CriticalC. IndifferentD. Not known4. Which of the following can best serve as the title of the passage?A. SnapGoods: a Good Place For ShoppingB. Borrow, Don’t Buy: Websites That Let Strangers ShareC. Why Do I RentD. Tips For Selling Things On the InternetDHigh school dropouts earn an average of $9,000 less per year than graduates. Now a new study denies a common belief why they quit. It’s much more basic than flunking out(不及格).Society tends to think of high school dropouts as kids who just can’t make it. They are lazy, and perhaps not too bright. So researchers were surprised when they asked more than 450 kids who quit school about why they left.―The vast majority actually had passing grades and they were confident that they could have graduated from high school.‖John Bridgeland, the executive researcher said. About 1 million teens leave school each year. Only about half of African-American and Hispanic(美籍西班牙的)students will receive a diploma, and actually all dropouts come to regret their decision. So, if failing grades don’t explain why these kids quit, what does? Again, John Bridgeland: ―The most dependable finding was that they were bored.‖―They found classes uninteresting；they weren’t inspired or motivated. They didn’t see any direct connection between what they were learning in the classroom to their own lives, or to their career aspirations.‖The study found that most teens who do drop out wait until they turn sixteen, which happens to be the age at which most states allow students to quit. In the US, only one state, New Mexico, has a law requiring teenagers to stay in high school until they graduate. Only four states: California, Tennessee, Texas and Utah, plus theDistrict of Columbia, require school attendance until age 18, no exceptions. Jeffrey Garin, another researcher, says raising the compulsory attendance age may be one way to keep more kids in school.―As these dropouts look back, they realize they’ve made a mistake. And anything that sort of gives these people an extra push to stick it out and see it through to the end, is probably help ful measure.‖New Hampshire may be the next state to raise its school attendance age to 18.But critics say that forcing the students unwilling to continue their studies to stay in school misses the point—the need for reform. It’s been called for to reinven t high school education to make it more challenging and relevant, and to ensure that kids who do stick it out receive a diploma that actually means something.【小题1】Most high school students drop out of school because_______.A.they have failing gradesB.B. they take no interest in classesC. they are mistreatedD. they are lazy and not intelligent【小题2】According to the passage, which state has a law requiring school attendance until they graduate?A.New HampshireB. UtahC. New MexicoD. The District of Columbia【小题3】The underlined words ―stick it out‖probably means―________‖.A. complete schoolingB. solve the problemC. love having classesD. believe in themselves【小题4】In the last paragraph, the writer is trying to________.A. analyze the reason why students quit schoolB. suggest raising the compulsory attendance ageC. raise awareness of reforming high school educationD. wish to make laws to guarantee no dropout第二节（共5小题：每小题2分，满分10分）【题文】根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
寒假作业05 动词的时态和语态-【寒假分层作业】2024年九年级英语寒假培优练(人教版)
限时练习：40min完成时间：月日天气：寒假作业05 动词的时态和语态一、时态考查热点1.八大时态结构一般现在时主语+be(am,is,are)+其它主语+动词原形(+其它) 主语+(+其它) 现在进行时主语+ be（am，is，are）+ 现在分词(+其它)一般过去时主语+be(was,were)+其它主语+ 动词的过去式(+其它)一般将来时主语+be going to+动词原形主语+shall/will+动词原形过去进行时主语++ 动词的现在分词过去将来时主语+ was/were/going to + 动词原形主语+would/should + 动词原形现在完成时主语++过去完成时主语++ 动词的过去分词2.时态与常用时间状语一般现在时every day, sometimes,at 7 every morning, on Sunday, often ,usually, always一般过去时yesterday, last week, an hour ago, the other day, in 1982, just now一般将来时next…, tomorrow, soon, his evening, in two days现在进行时look, listen , now, at the moment现在完成时for, since, so far, ever, never, just, yet, till/until, up to now, in the past few years, recently过去将来时the next day(morning, year…),the following month(week…)过去完成时before, by, until, when, after, once, as soon as过去进行时this morning, the whole morning, all day, this time yesterday, from nine to ten last evening 3.区别：have/has gone to，have/has been to 和have/has been inhave/ has gone to 去了（在去某地的路上或在某地，人还未回来）have/ has been to 曾经去过（人已经回来了）have/ has been in （常与一段时间连用）注意：have/ has been to常和once, twice, never, ever连用; have/ has gone to则不可。
01-高一英语寒假作业
高一寒假作业1一、词法突破A.单词拼写1.1 was（焦虑的）about the children when they didn't come back home from school.2.What（使T齿怒）me is that he won't even listen to other people's suggestions.3.She is not an（夕卜向的）person and she doesn't let anyone know what she truly feels.4.We felt at home with her and were（给留下E［］象）with the depth of her knowledge.5.The appearance of a spaceship makes it possible for us to（探索）the moon.6.Tom arrived at school late again,which made him feel（令人尴尬的）.7.How to do the（实验）has not been discussed yet.8.句式语境仿写.What if no one talks to me?要是没有人和我说话会怎么办呢？［仿写］要是他不同意我会怎么办呢？he doesn't agree with me?1.1found most of mv classmates and teachers friendlv and helpful.我发现我的大部分同学和老师都很友好，乐于助人。
［仿写］我发现绘画或素描很令人放松。
I find.3.1 feel much more confident than I felt this morning.我感觉比今天早晨更加自信。
［仿写］这次实验的结果比上次的好。
天津市2014届高三上学期期末五校联考 数学(文) Word版含答案
2013—2014学年度第一学期期末五校联考高三数学（文）试卷命题人：杨村一中：王玲 宝坻一中：张建芝一、选择题（共8个小题，每小题5分，共401.集合}{,,,,,U =123456，}{,,S =145,}{,,T =234,则)(T C S U 等于( ）A.}{,,,1456B.}{4C. }{,15D.}{,,,,123452.“22a b>”是 “22log log a b >”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3.执行如图的程序框图，则输出的T 值等于( )A ．91B ． 55C ．54D ．30 4.直线l 与圆22240,(3)x y x y a a ++-+=<相交于,A B 两点，若弦AB 的中点为(2,3)-，则直线l 的方程为( )A ．30x y +-=B ．10x y +-=C ．50x y -+=D ．50x y --= 5.设123log 2,ln 2,2a b c ===，则( )A ．a b c <<B ．b c a <<C ．b a c <<D ． c b a <<6.函数()sin()(0)6f x A x πωω=+>的图像与x 轴的交点的横坐标构成一个公差为2π的等差数列，要得到函数()sin g x A x ω=的图像，只需将()f x 的图像（ ） A.向左平移6π个单位 B.向右平移6π个单位C.向左平移12π个单位D.向右平移12π个单位7.点P 是双曲线22221(0,0)x y a b a b -=>>左支上的点，右焦点为(,0)F c ，若M 为线段FP 的中点, 且M 到原点的距离为8c，则双曲线的离心率e 的取值范围是（ ）A.41,3⎛⎤⎥⎝⎦ B.(]1,8 C.45(,)33 D.(]2,38．若1()1(1)f xf x+=+，当[0x∈，1]时，()f x x=，若在区间(1-，1]内()()g x f x mx m=--有两个零点，则实数m的取值范围是（）二、填空题（共6个小题，每小题5分,共30分）9.复数4312ii++的实部是 .10.若变量yx,满足约束条件340x yx yx y+≥⎧⎪-≥⎨⎪+-≤⎩，则yxz+=4的最大值是 .11.一个几何体的三视图如图所示(单位：cm)，那么此几何体的侧面积为 cm2.12.设)(xf是定义在R上的奇函数，当0x<时，'()0f x>，且1()02f-=，则不等式()0f x<的解集为____．13. 如图所示，点P是⊙O外一点，PD为⊙O的一条切线,D是切点，割线经过圆心O，若030=∠EFD，32=PD，则=PE .14.在ABC∆中,20,||5,||10,,3AD BC AB BC BD DC⋅====点P满足AP mAB=+(1)m AC-，则AP AD⋅的值是 .三、解答题（共6个小题，共80分）15、（本小题满分13分）为了更好地开展社团活动，丰富同学们的课余生活，现用分层抽样的方法从“模拟联合国”，“街舞”，“动漫”，“话剧”四个社团中抽取P（Ⅰ）求c b a ,,的值；（Ⅱ）若从“模拟联合国”与“话剧”社团已抽取的人中选2人担任指导小组组长，求这2人分别来自这两个社团的概率． 16．（本小题满分13分）已知函数1()cos )cos 2f x x x x ωωω=+-，其中0ω>，()f x 的最小正周期为4π.（Ⅰ）求函数()f x 的单调递增区间；（Ⅱ）在ABC ∆中， 角A B 、、C 的对边分别是a 、b 、c ，且满足(2)cos cos a c B b C -=，求函数()f A 的取值范围.17.（本小题满分13分）已知在四棱锥ABCD P -中，底面ABCD 是矩形，ABCD PA 平面⊥，，1==AD PA的中点、分别是、，PD AB F E AB 2=（Ⅰ）求证：AF ∥PEC 平面;（Ⅱ）求PC 与平面ABCD 所成角的正切值大小; （Ⅲ）求二面角D EC P --的正切值大小. 18．（本小题满分13分）椭圆22221(0)x y a b a b +=>>，右焦点到直线0x y ++=的距离为CAP（I ）求椭圆的方程；（Ⅱ）过点()1,0-M 作直线l 交椭圆于B A ,两点，交x 轴于N 点,满足75NA NB =-,求直线l 的方程．19．（本小题满分14分）已知数列{}n a 的前n 项的和为n S ，点()n S n P ,()*∈N n 在函数()2x x f -= x 7+的图象上．(Ⅰ)求数列{}n a 的通项公式及n S 的最大值；(Ⅱ)令()*2N n b n a n ∈=，求数列{}n nb 的前n 项的和n T ； (Ⅲ)设()()n n n a a c --=971，数列{}n c 的前n 项的和为n R ，求使不等式57kR n >对一切*N n ∈都成立的最大正整数k 的值．20．（本小题满分14分） 已知函数xax x f -=ln )( ，x ax x f x g ln 6)()(-+= ，其中R a ∈ （Ⅰ）讨论)(x f 的单调性；（Ⅱ）若)(x g 在其定义域内为增函数，求正实数a 的取值范围;（Ⅲ）设函数4)(2+-=mx x x h ，当2=a 时,若)1,0(1∈∃x ，对[]2,12∈∀x ，总有)()(21x h x g ≥成立，求实数m 的取值范围.2013—2014学年度第一学期期末五校联考高三数学（文）答题纸一、选择题（每小题5分）二、填空题（每小题5分）9. 10. 11.12. 13. 14.三、解答题15.（本小题满分13分）16.（本小题满分13分）17.（本小题满分13分）18．（本小题满分13分）D CBAPEF19.（本小题满分14分）20.（本小题满分14分）2013—2014学年度第一学期期末五校联考高三数学（文）答案三、解答题15.解：（Ⅰ）由表可知抽取比例为16，故4=a，6=b，2=c………3分（Ⅱ）设“模拟联合国”4人分别为A1，A2，A3，A4；“话剧”2人分别为B1，B2.则从中任选2人的所有基本事件为(A1，A2)，(A1，A3)，(A1，A4)，(A2，A3)，(A2，A4)，(A3，A4)，(A1，B1)，(A1，B2)，(A2，B1)，(A2，B2)，(A3，B1)，(A3，B2)，(A4，B1)，(A4，B2)，(B1，B2)，共15个．…………9分其中2人分别来自这两个社团的基本事件为(A 1，B 1)，(A 1，B 2)，(A 2，B 1)，(A 2，B 2)，(A 3，B 1)，(A 3，B 2)，(A 4，B 1)，(A 4，B 2)，共8个．………12分 所以这2人分别来自这两个社团的概率P ＝815. ………13分16.解：21()cos cos 2f x x x x ωωω=⋅+-12cos 22x x ωω=+sin(2)6x πω=+ ………………3分（Ⅰ） 21424ππωω=∴=， ()sin()26x f x π=+. 由22()2262x k k k Z πππππ-≤+≤+∈ 得： 424433k x k ππππ-≤≤+.()f x ∴的单调递增区间是42[4,4]()33k k k Z ππππ-+∈ ……………7分 （Ⅱ）由正弦定理：(2sin sin )cos sin cos A C B B C -=⋅2sin cos sin()A B B C =+sin()sin()sin 0B C A A π+=-=>1cos 2B ∴= ，3B π= ， ……………11分)62sin()(π+=A A f203A π<<，6262A πππ<+< ， 1()(,1)2f A ∴∈. …………… 13分 17.解：（Ⅰ）取PC 的中点O ，连结OE OF 、 FO ∥DC DC FO 21=且 ∴FO ∥AE ……………………2分又E 是AB 的中点．且AE FO DC AB =∴=,∴四边形AEOF 是平行四边形．AF ∴∥OE ,又PEC OE 平面⊂，PEC AF 平面⊄AF ∴∥PEC 平面．．．4分（Ⅱ）连结AC∵PA ⊥平面ABCD ,∴PCA∠是直线PC 与平面ABCD 所成的角……………………6分 在PAC R ∆t 中，tan PA PCA AC ∠===即直线PC 与平面ABCD 所成的角的正切值为55…………8分 （Ⅲ）作CE AM ⊥，交CE 的延长线于点M ,连结PM ，AC PA 平面⊥ ,AC CE 平面⊂，则PA CE ⊥,A PA AM AM CE =⋂⊥,,即,PAM CE 平面⊥PM CE PAM PM ⊥⊂则平面,∴PMA ∠是二面角D ECP --的平面角． ………11分 由AME ∆∽CBE ∆，可得AM =，∴tan PA PMA AM∠== ∴二面角D EC P --的正切值为2 …………13分18.解：（I ）设右焦点为(,0)c，则=，c +=±， c =或c =-舍去) (2)分又离心率c a ==，a =，b ==故椭圆方程为22182x y +=. ……5分 （Ⅱ）设),(11y x A ，22(,)B x y ，0(,0)N x ，因为75NA NB =-， 所以1012027(,)=(,)5x x y x x y --- ，1275y y =- ① ……7分易知当直线l 的斜率不存在或斜率为0时，①不成立，于是设l 的方程为10y kx k ()=-≠，联立22148y kx x y =-⎧⎨+=⎩消x 得222(41)2180k y y k +++-= ②因为0∆>，所以直线与椭圆相交， 于是122241y y k +=-+ ③，21221841k y y k -=+ ④，……10分 由①③得，22541y k =+，12741y k =-+代入④整理得42890k k +-=，21k =，k 1=±所以直线l 的方程是1y x =-或1y x =--.………13分 19.解：（I ）因为点()n S n P ,()N n ∈在函数()2x x f -= x 7+的图象上．所以n n S n 72+-=，当2≥n 时，821+-=-=-n S S a n n n 当1=n 时，611==S a 满足上式，所以82+-=n a n． ……2分 又n n S n 72+-=449272+⎪⎭⎫ ⎝⎛--=n ，且*N n ∈ 所以当3=n 或4时，nS 取得最大值12． ……4分 （Ⅱ）由题意知n n n b -+-==48222 ……5分所以数列{}n nb 的前n 项的和为()45232212221+-+-⨯+⨯-++⨯+⨯=n n n n n T 所以()342221222121+-+-⨯+⨯-++⨯+⨯=n n n n n T ， 相减得3423222221+-+-⨯-+++=n n n n T ， ……8分 所以()()*442232*********N n n n T n n n n ∈⨯+-=⨯--⎥⎥⎦⎤⎢⎢⎣⎡⎪⎭⎫ ⎝⎛-=--……9分 (Ⅲ)由(Ⅰ)得()()n n n a a c --=971()()⎪⎭⎫ ⎝⎛+--=+-=1211212112121n n n n ……10分 所以⎥⎦⎤⎢⎣⎡⎪⎭⎫ ⎝⎛+--++⎪⎭⎫ ⎝⎛-+⎪⎭⎫ ⎝⎛-=121121513131121n n R n ⎪⎭⎫ ⎝⎛+-=121121n …12分 0)32)(12(1)12113211(211>++=++-+-=-+n n n n R R n n 知n R 在*N n ∈上单调递增，所以n R 的最小值为311=R 不等式57k R n >对一切*N n ∈都成立，则5731k >，即19<k ． 18,max =∈*k N k ………14分20.解：（Ⅰ）)(x f 的定义域为),0(+∞，且2)(xa x x f +='， ①当0≥a 时，0)(>'x f ，在（0，+∞）上单调递增； ②当0<a 时，由0)(>'x f ，得a x ->;由0)(<'x f ，得a x -< 故在)(x f 在),0(a -上单调递减，在),(+∞-a 上单调递增．……4分 （Ⅱ）x xa ax x g ln 5)(--=，)(x g 的定义域为),0(+∞ ， 22255)(x a x ax x x a a x g +-=-+=' 因为)(x g 在其定义域内为增函数，所以),0(+∞∈∀x ，0)(≥'x g 052≥+-∴a x axx x a 5)1(2≥+∴ ，即 152+≥x x a ……………6分 max 2)1(5(+≥x x a ∴2515152≤+=+x x x x ， 当且仅当1=x 时取等号，所以25≥a ………9分 （Ⅲ）当2=a 时，x x g 2)(=﹣，， 由0)(='x g ，得2=x 或21x =当时，0)(>'x g ；当x 时，0)(<'x g所以在（0，1）上，，……………10分 “)1,0(1∈∃x ，[]2,12∈∀x ，总有)()(21x h x g ≥成立” 等价于 “)(x g 在（0，1）上的最大值不小于)(x h 在[]2,1上的最大值” ……………11分 而)(x h 在[]2,1上的最大值为{})2(),1(max h h ，所以有 ⎪⎪⎩⎪⎪⎨⎧≥≥)2()21())1()21(h g h g ∴⎩⎨⎧-≥+--≥+-mm 282ln 5352ln 53 ， ∴⎪⎩⎪⎨⎧-≥-≥)2ln 511(212ln 58m m ……………13分 解得2ln 58-≥m所以实数m 的取值范围是[)+∞-,2ln 58 ……14分。
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【KS5U首发】天津市2013-2014学年高三寒假作业（5）英语Word版含答案一、单项选择（共15小题，每小题1分，满分15分）从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1.---- Where did you buy that______ dress, Helen?---- I don’t know. It was given by my aunt.A. beautiful blue silkB. beautiful silk blueC. blue silk beautifulD. blue beautiful silk2.The student said to me, "She has made a close study of the problem." The student told me that she __ a close study of the problem.A. has makeB. have madeC. had makeD. had made3.What a table! I’ve never seen such a thing before. It is _______ it is long.A. half not as wide as B not half as wide asC wide not as half asD as wide as not half4.I don’t think Dav id could have done such a stupid thing last night, ?A. did heB. didn’t heC. do ID. don’t I5. ______ for the boy to talk with his mouth full!A. What bad manners they areB. How bad manners they areC. What bad manners it isD. How bad manners it is6. The teenagers wonder ______makes Jay a successful pop singer.A. what is it thatB. what it is thatC. that it isD. what is it that7.Nathalie suggested the problem worth paying attention ______ at the meeting.A. to be discussedB. to been discussedC. being discussedD. be discussed8.It was in her hometown ______ she put up a new school, ______ encouraged other people to help her.A. where; thatB. that; whichC. that; thatD. which; that9.Not until the heavy snow blocked the express ____ how serious the weather was.A. the villagers did realizeB. the villagers realizedC. did the villagers realizeD. didn’t the villagers realize10..The air pollution in central North China _______ reach Level 1-4,with otherparts of the region even _______ Level 1-5. People have _______to stay indoors.A. is expected to,get up to ,suggestedB. are expectedto,getting up to,advisedC.is expected to,getting up to,been advisedD. expected to,get up to,been suggested11.Students are ________ the telescopes to see stars clearly.A. adjusting toB. tending toC. adjustingD. tending12.—I heard that Mary had ________ with her friend.—Really? No wonder they don’t speak to each other any longer.A. broken downB. broken outC. broken upD. broken away13.When you are ______ about something, you are ______ to do whatever you can to get it．A. anxious; likelyB. eager; possibleC. enthusiastic; likelyD. concerned; probable14.–I’m sorry I can’t reach the book on the shelf.--Please have somebody else who is _____ get it.A. tall enoughB. tall enough toC. as tall as youD. very tall to15.The Great Wall winds its way mountains valleys and deserts to the east.A.over, in, throughB.over, through, acrossC.on, in, acrossD.in, in, through二、完型填空（共20小题；每小题1分，满分20分）阅读下面短文，掌握其大意，然后从16～35各题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。
If you do not use your arms or your legs for some time, they will become weak; and when you start using them again, they will slowly become strong again.16 knows this, but nobody would think of 17 the fact.Yet there are many people who 18 to know that the memory works in the same way. When someone says that 19 has a good memory, he 20 means that he keeps his memory in practice 21 exercising it very 22 , either consciously or unconsciously. When someone else says that his memory is 23 , he means that he does not give it enough 24 to become strong. The position is exactly the same as that of 25 people, one of 26 exercises his arms and legs by playing ball, while the other 27 in a chair or a car all day. If a friend of yours says that his arms are weak, we know that it is his own 28 , But if he tells us that he has a poor memory, 29 of us think that his parents are to blame, or that he is just 30 , and few of us realize that it is just as it was his arms or legs that were weak. Not all of us can become very strong in body or very clever in mind, 31 all of us can improve our strength and our memory by the same means that 32 .Have you ever 33 that people who cannot read or write usually have 34 memories than those who can? Why is this? Of course, because they cannot write down something in a little notebook or something else. They have to remember names, places, songs and stories; so their memory is always being exercised.In a word, if you want to have a good memory, do practice 35 things。
16. A. Everybody B. Somebody C. Nobody D. Each one17. A. proving B. questioning C. describing D. indicating18. A. want B. have C. seem D. need19. A. she B. he C. it D. one20. A. always B. nearly C. really D. almost21. A. with B. in C. to D. by22. A. often B. fast C. quickly D. soon23. A. bad B. useless C. helpless D. poor24. A. time B. chance C. space D. places25. A. two B. four C. three D. five26. A. them B. that C. whom D. which27. A. lies B. sits C. hides D. stands28. A. business B. interest C. story D. fault29. A. few B. some C. many D. several30. A. unfortunate B. unhappy C. unthinkable D. miserable31. A. because B. but C. for D. since32. A. study B. rest C. play D. work33. A. noticed B. thought C. believed D. realized34. A. stranger B. poorer C. worse D. better35. A. remember B. remembering. C. to remember D. remembered三、阅读理解（共20小题；每小题1分，满分20分）阅读下面短文，掌握其大意，然后从16～35各题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。