陕西省宝鸡市金台区2015届高三英语11月会考试卷

2015年普通高等学校招生全国统一考试（陕西卷）英语月考试题（2014.11）本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分。

全卷满分150分，考试时间120分钟。

注意事项：1.答第Ⅰ卷前，考生务必将自己的姓名、准考证号、考试科目用2B铅笔涂写在答题卡上。

2.每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑。

如需改动，用橡皮擦干净后，再选涂其它答案标号，在试卷上作答无效。

第一部分英语知识运用（共四节，满分55分）第一节语音知识（共5小题；每小题1分，满分5分）从每小题的A、B、C、D四个选项中，找出其划线部分与所给单词的划线部分读音相同的选项，并在答题卡上将该选项涂黑。

1. braveryA. hammerB. bathC. passiveD. tasty2.teaseA. accuseB. tenseC. universeD. false3. suggestionA. inventionB. questionC. creationD. collection4. customA. opposeB. remoteC. apologyD. overcome5. denyA. diaryB. likelyC. guiltyD. rely第二节情景对话（共5小题，每小题1分，满分5分）根据对话情景和内容，从对话后的选项中选出能填人空白处的最佳选，并在答题卡上将该选项涂黑。

（选项中有两项为多余选项）Clerk: Cambridge Theatre. Box Office.Henry: Have you got any tickets for Romeo and Juliet for this Saturday evening?Clerk: 6 5 pm or 8:30 pm?Henry: 8:30 pm, please.Clerk: Sorry, 7Henry: Well, have you got any tickets for the 5 pm performance?Clerk: Yes, 8Henry: I’d like to reserve two seats at 4.50 pounds, please.Clerk: Right. That’s two tickets at 4.50 pounds. 9 What’s the name, please?Henry: Bishop. Henry Bishop.Clerk: Thank you. 10Henry: Yes, of course. Thank you. Goodbye.Clerk: You’re welcome.第三节语法和词汇知识（共15小题, 每小题1分，满分15分）从每小题的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该选项涂黑。

2015年普通高等学校招生全国统一考试英语试题（陕西卷，参考版解析）【答案】1.A2.C3.B4.C5.D考点：考查单词辨音【答案】6.D7.G8.C9.A10.E【解析】试题分析：6.根据下文的Yes，doctor. 可知这里是看医生，医生应该说：我怎么帮助你？故选D。

7.根据下文的Since I started my new job two months ago，可知这里是问：你这样有多久了？故选G。

8.根据下文的：It depends，可知这里是说：这有什么关系吗？故选C。

9.根据上文的句子：About 80 hours a week，可知这里是说：工作时间太多了。

故选A。

10.根据上句：Not very often，可知这里是：我没有时间（锻炼）。

故选E。

考点：考查情景对话。

单项选择11.【答案】C【解析】试题分析：句意：--让我们去新年夜晚会，好吗？---好啊!我想那一定很有趣.Forget it！“得了，忘了吧！”；No way！“没门”；Why not！“好啊！”；What for？“为什么？”，所以选C.考点：考查交际英语12.13.【答案】B考点：考查代词14．【答案】A【解析】试题分析：句意：一个人越有学识，他就越可能更谦虚，使用the +比较级+主谓， the +比较级+主谓的句型，所以选A.考点：考查冠词15.【答案】D【解析】试题分析：句意：作为家里最小的孩子，Alex总是渴望他能够有独立的时间。

这里使用定语从句，先行词是the time，定语从句中缺少时间状语，用关系副词when，所以选D。

考点：考查定语从句16.【答案】D【解析】试题分析：句意：--老师，我可以迟一些交我的作业吗？--好的，因为你最近一直不舒服。

You can’t beserious你不会是认真的；I’m afraid not恐怕不行；Good idea好主意；Wll，all right好啊，行。

所以选D。

1 / 202015年高考英语真题试卷（陕西卷）一.语法和词汇知识：本大题共15小题，每小题1分，共15分1.（2015陕西）陕西）---Let's go to the New Year's Eve party, shall we? ---- _________ I guess it will be fun.A. Forget it!B. No way ！C. Why not?D. What for?2.（2015.陕西）The li le pupil took his grandma ________ the arm and walked her across the street.A. onB. byC. inD. at3.（2015.陕西）To warm himself, the sailor sat in front of the fire rubbing one bare foot against________.A. anotherB. the otherC. otherD. either 4.（2015陕西）陕西）______ more learned a man is, _______ more modest he usually become. A. The ; the B. A; a C. The ; a D. A; the5.（2015.陕西）As the smallest child of his family, Alex is always longing for the me_______ he should be able to be independent.A. whichB. whereC. whomD. when6.（2015陕西）—Sir, could I hand in my homework a bit late?— __________, since you've been unwell these days.A. You can't be seriousB. I'm afraid notC. Good ideaD. Well, all right7.（2015.陕西）A er receiving the Oscar for Best Suppor ng Actress, Anne Benedict went on _________ all the people who had helped in her career.A. to thankB. thankingC. having thankedD. to have thanked8.（2015陕西） Back from his two-year medical service in Africa, Dr. Lee was very happy to see his mother ______ good care of at home.A. takingB. takenC. takeD. be taken9.（2015.陕西）Reading her biography, I was lost in admira on for _______Doris Lessing had achieved in literature.A. whatB. thatC. whyD. how10.（2015.陕西）I believe you will have a wonderful me here _______ you get to know everyone else. A. though B. as if C. once D. so that11.（2015陕西） You_______ feel all the training a waste of me, but I'm a hundred percent sure later you'll be grateful you did it.A. shouldB. needC. shallD. may12.（2015陕西）Mary _________ really hard on his book and thinks he'll have finished it by Friday.A. workedB. has been workingC. had workedD. has worked13.（2015.陕西）Ellen is a fantas c dancer. I wish I ________ as well as her.A. danceB. will danceC. had dancedD. danced14.（2015陕西）At college, Barack Obama didn't know that he ______the first black president of the United States of America.A. was to becomeB. becomesC. is to becomeD. became15.（2015陕西）Peter will _______ his post as the head of the travel agency at the end of next month.A. take upB. put upC. add upD. break up二.完形填空：共20小题，每小题1.5分，共30分16. （2015陕西）完形填空。

高中英语真题:2015届高三英语11月联考试题本试卷分第Ⅰ卷和第Ⅱ卷两部分。

满分150分。

考试用时120分钟。

第一部分：听力（30分)略第二部分：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）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

（8分）AEllen MacArthur started sailing when she was eight, goin g out on sailing trips with her aunt. She loved it so much that s he saved her money for three years to buy her first small saili ng boat. When she was 18, she sailed alone around Britain a nd won the “Young Sailor of the Year” award.But Ellen really became famous in 2001. Aged only 24, she was one of only two women who entered the Vendee Glo be round the world solo race, which lasts 100 days. Despite many problems, she came second in the race out of 24 competi tors and she was given a heroine’s welcome when she return ed.Ambition and determination have always been a big part of Ellen’s personality. When she was younger, she lived in a kind of hut for three years while she was trying to get sponsor ship to compete in a transatlantic race. Then she took a one-way ticket to France, bought a tiny seven metre Classe Mini y acht, slept under it while she was repairing it, and then she ra ced it 4,000 kilometres across the Atlantic in 1997, alone for 3 3 days.Ellen has had to learn many things, because sailing singl e-handed means that she has to be her own captain, electrician , sailmaker, engineer, doctor, journalist, cameraman and cook . She also has to be very fit, and because of the dangers of sl eeping for long periods of time when she’s in the middle of the ocean, she has trained herself to sleep for about 20 minutes a time.And she needs courage. Once, in the middle of the ocea n, she had to climb the mast of her boat to repair the sails - at four o’clock in the morning, and with 100 kph winds blowing ar ound her. It took her many hours to make the repairs; Ellen says: “I was exhausted when I came down. It’s hard to describe how it feels to be up there. It’s like trying to hold onto a big pol e, which for me is just too big to get my arms around, with so meone kicking you all the time and trying to shake you off.”But in her diary, Ellen also describe moments which mak e it all worthwhile: “A beautiful sunrise started the day, with bl ack clouds slowly lit by the bright yellow sun. I have a very str ong feeling of pleasure, being out here on the ocean and havi ng the chance to live this. I just feel lucky to be here.”1.（2分）Ellen bought her first sailing boat __________.A、soon after going out sailing trips with her auntB、when she was about elevenC、when she won the “Young Sailor of the Year” awardD、when she was able to sail alone正确答案：B解析：判断推理题。

金台区高三会考英语试题（Nov.15, 2011）注意事项：1. 本试卷由选择题和非选择题两大部分组成。

选择题包括第一部分和第二部分；非选择题为第三部分。

2. 1—65题涂在答题卡上。

A涂A; B涂B; C涂C; D涂D; E涂AB;F涂AC; G涂AD.第一部分：英语知识运用（共四节，满分55分）第一节：语音知识（共5小题；每小题1分，满分5分）从每小题所给的A、B、C、D四个选项中，找出一个单词划线部分读音和所给单词的划线部分读音一样的一个词，并在答题卡上将该选项涂黑。

1.breathe A. mouthful B. thought C. athlete D. within2.fade A. blank B. navy C. gather D. various3.expression A. excellent B. experience C. existence D. expert4.perfect A. persuade B permit (vt) C. perhaps D service5.watched A. refused B. wanted C. worked D. judged第二节：情景对话（共5小题；每小题1分，满分5分）根据对话情景和内容，从对话后所给的选项中选出能填入每一个空白处的最佳答案，并在答题卡上将该选项涂黑。

T: Hi, you must be the new secretary. Welcome, I’m Tom Robinson from Public Relations.L: Hi, Mr. Robinson. Thanks. My name is Lisa Johns. _____6___T: Please call me Tom , Lisa.L: OK, Tom. ___7______T: Yes, over twenty years.L: Wow. ____8____ Do you enjoy working here?T: Well, yes . ____9____ And it’s also a good place to work in. But to be honest, what I really enjoy is the chance to go abroad.第三节：语法和词汇知识（共15小题；每小题1分，满分15分）从每小题A、B、C、D四个选项中选出可以填入空白处的最佳答案，并在答题卡上将该选项涂黑。

2015年高三英语11月半月考试题（附答案）上高县第二中学2016届高三11月半月考试英语试题第二部分阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

A 2015, the time has come for more creative China tours to be made, Shanghai Disney opens, more high-speed rail options. Insisting on high-quality services, we are proud to present our ever best-selling China tour packages, tour themes and the next popular destinations. Check out the optional activities and information making our Smart Travelers’ trips outstanding. China Highlights’ most popular private tour. Our private guide, driver and car are available all times. You take the trip, we take the stress. Day 1-2 In Beijing Take a break on your arrival. Enjoy local people’s morning exercise at the Temple of Heaven before visiting the Great Wall, and then have a lifetime experience of visiting the Mutianyu section of the Great Wall on Day 2. Day 3-4 In Xi’an Still in Beijing in the daytime of Day 3. Visit the Forbidden City and the Tian’anmen Square to feel royal life in ancient China. After that pay a visit to hutongs which give full flavor of authentic experience. Catch a flight at night to Xi’an. Private guide and driver escort you to visit the highlights of Xi’an on Day 4.[:] Day 5-7 In Guilin/Yangshuo Continue to see Xi’an and have more interacts with the local. Visiting a fam ily in Xi’an and learning how to make different shapes of dumplings give you an unforgettable time. Take a plane at night and arrive at Guilin on Day 5. Get on board to enjoy essence of Guilin, the Li River cruise to Yangshuo. Cycle to villages and meet friendly local people and learn more about Chinese agriculture. Day 8-10 In Shanghai Private transfer from Yangshuo to Guilin airport. Shanghai guide and driver are waiting for you withsmiling faces. Highlights of the city on Day 9 show you the future of China as the end of the trip. You have free time on the last day before taking an international flight. Just let us know your travel style! We will then adapt this tour and create a unique quote based on your individual needs. For more information, please click here:/tour/. 21．If a tourist is interested in Chinese food, which place will impress him/ her most ? A．Beijing. B．Guilin. C．Shanghai. D．Xi’an. 22．What’s the author’s intention to write the passage ? A．To advertise some beautiful places in China.[:.....] B．To introduce some wonderful local food for tourists. C．To introduce abest-selling China tour package to foreign tourists. D．To show tourists some interesting activities in China. 23．Where can you find this passage ? A．In the newspaper. B．On a poster. C．On the Internet. D．On TV. B My 16-year-old son, Anton, had gone to the local swimming hole．Most of the kids swim there, and there are plenty of rocks for them to use as safe harbors, so I had no fears for his safety． Still, the firefighter's first words "You need to come up here to the Stillwater River" made me catch my breath, and his follow-up words gave me relief: “ Your son is OK．” When I got to the river, I immediately saw the fire truck, ambulance and Anton, wrapped with a towel about his shoulders, sitting quietly on a low platform of the fire engine． I hurried over to him. "You OK?"I asked．“Yeah," was all he said．But my eyes begged for an explanation. I didn't get it from my son, however, who tends to play his cards close to his vest． The story was this: A woman was being swept under water. Hearing the cries, Anton and his friend Tyler, without hesitation, swam out to her, and brought her safely to shore． In an age in which the word "hero" is broadcast with abandon andseemingly applied to anyone who make it through the day, I realized the real thing in my son．The teens are stubborn and self-centred, but that didn't mean they have no desire to do good． Still shocked by my son's daring, I drove him home．Along the way, I tried to dig out some more information from him - but he had precious little to say．The only words he said were, “What's for supper?" I spent some time alone that evening, thinking about the tragedy that might have been. The next morning, when Anton got up, I half wanted him to tell me the story．But all he did was toast some bread, pull himself together, and head for the door to start a new day. Watching from the window, I was reminded that still water often runs deep. 24．Why did the mother allow her son to swim there? A．He was an excellent swimmer. B．The water of the river is shallow. C．He was old enough to swim. D．The rocks can be of help if there's danger. 25．The underlined part "who tends to play his cards close to his vest" probably means ________ A．Anton is a boy fond of swimming with other kids B．Anton is unwilling to tell others what he thinks C．Anton always has a desire to help others D．Anton seldom changes his mind 26．In the mother's eyes, what her son did was__________ A．dangerous but interesting B．meaningful but difficult C．unexpected and courageous D．awful and absurd 27．What might be the best title for the passage? A．My Son, My Hero B．Anton, A Silent Boy C．A Good Deed D．A Proud Mother C Just when we thought we had seen all the magical things that 3D printing can do , here comes another－ A working artificial leg has transformed the life of a little Canadian duckling（小鸭子）called Dudley, who had been struggling to get by after losing a leg. The story began on August 19th, 2013, when the newly-born healthy Dudley and his brother, were placed inside a chicken coo（笼子）at the K9-1-1 AnimalandZxxkComRescue Services in Sicamous, British Columbia. Within a few hours, an aggressive chicken attacked the two, killing Dudley’s brother and leaving him with a disab ility! While Dudley could swim with his single leg, he had a hard time walking on the firm ground. Determined to help him, Doug Nelson, the owner of the shelter decided to consult Terence Loring, founder of a design firm that among other things also offers 3D printing designs. Given that he had just launched 3 pillar Designs, Terence somewhat hesitated to take on a duckling as his first client(客户）. But as soon as he saw brave little Dudley walking around on one leg, Terence knew he had to do something. Using his biomedical engineering training, Terence spent the next few weeks creating a 3D template （模板）, after he found out how ducks’ legs worked in YouTube videos about ducks. Once ready, he sent them to Ontario-based 3Dengineering firm Proto3000, who agreed to print the leg. The second artificial leg was much stronger than the first one. When the artificial leg that is printed from strong ABS(a thermoplastic （热塑性塑料）that becomes soft and moldable when heated )and attached to a foot designed from soft and flexible rubber-like plastic, was fitted on Dudley, his whole manner changed. He wagged his tail and showed it off to his best friend －A pig called Elsie. Of course, as Dudley has been growing, the leg and foot have had to be replaced. But that hasn’t bothered Terence who continues to improve the design.:]The best part is that Terence has put all the designs on his website so that anyone wishing to help out an animal suffering from a similar injury can do so, by simply hitting the print button on his/her 3D printer! 28．How did Dudley lose his leg? A. He wasn’t well looked after. B. He lost it in a traffic accident. C. He lost it in a chicken attack. D. He was born with a disability. 29．Whatdo we know about Terence Loring’s design firm? A. It is the first one to offer 3D printing designs. B. 3D designs are only part of their services. C. Their main clients are injured animals. D. They often cooperate with Proto 3000 30．What did Terence first do to make an artificial leg for Dudley? A. Consulting Dudley’s owner ab out the solution. B. Creating a 3D template with the help of Proto3000. C. Being trained in biomedical engineering. D. Watching You Tube videos bout ducks. 31．To Terence’s great satisfaction, ______. A. Dudley has got a permanent artificial leg B. a possible solution has been found to help suffering animals. C. he succeeded in his first attempt to make Dudley an artificial leg. D. his design has become widely known online. D Frozen fruit and vegetables can be healthier, with higher levels of vitamins and cancer fighting antioxidants (抗氧化剂), that leafy “fresh” produce. Two independent studies found more beneficial nutrients in everything from frozen broccoli florets to carrots. In two out of three cases frozen fruit and vegetables scored better on antioxidant-type compounds(化合物). Consumption of these antioxidant compounds is considered beneficial in preventing cancer and supporting the wording of the body, brain, skin and eyes. Produce bought from the supermarket greengrocer sections is full of color, while many stores even use fine mist sprays (喷剂)to give a just picked look. This supermarket theatre convinces shoppers to pay an extra payment for food that they believe is good for their family’s health as well as being tasty. However, the reality is that these vegetables and fruit may well have been held in storage for a month, while they then sit in the fridge at home for days before being eaten. Over the days, they gradually deteriorate, slowly losing some of the nutrients associated with leafy greens and fruit. By contrast,frozen vegetables and fruit are chilled（冷藏）soon after harvest and so keep higher levels of vitamins and antioxidants until they are eaten. Two teams, one form Leatherhead Food Research and the other from the University of Chester, carried out 40 tests to measure nutrient levels in produce which had been sitting in a fridge for three days and the frozen equivalent (相等物). The findings show that eating newly picked produce is the healthiest option; however, frozen food can be almost as good and is often better than items sold as “fresh”. Leatherhead’s Dr Rachel Burch said: “We must ignore the mistaken opinion that fresh food is always better for us than frozen food.” These results show that frozen food can be nutritionally comparable to fresh produce. Direct comparison: In two out of three cases frozen fruit and vegetable scored better on antioxidant-type compounds including Vitamin C, polyphenols and anthocyanins (多酚和花青素), a study found. Her team found frozen broccoli had higher levels of Vitamin C. However, fresh food scored better on polyphenols, which are thought to help prevent cancer. 32. What does the passage mainly tell us? A. Fresh food is better than frozen food. B. Frozen food might cause cancer. C. Frozen food is as good as fresh food.D. Frozen food is better than “fresh” food. 33. Why do some supermarkets spray fine mist on fruit and vegetables? A. To keep them in good quality. B. To make them taste good. C. To make them look fresh. D. To make them sell cheaply. 34. What does the unde rlined word “deteriorate ” in Paragraph 3 mean? A. Grow worse. B. Grow better. C. Remain the same. D. Die out. 35. What is more helpful in preventing cancer? A. Vitamin C. B. Frozen fruit and vegetables. C. Fresh fruit and vegetables. D. Anthocyanins.第二节（共5小题，每小题2分，满分10分）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，选项中有两项为多余选项。

陕西省宝鸡市金台区2015届高三11月会考数学理试题本试卷分为两部分，第一部分为选择题，第二部分为非选择题. 满分150分，考试时间120分钟.参考公式：V sh =柱体， 13V s h =锥体， 343V R π=球，1()n n x nx -'=，1(ln )x x -'=，().xy x y xy '''=+第一部分（选择题，共50分）一、选择题：本大题共10小题，每小题5分，共50分，在每小题给出的四个选项中，只有一项是符合题目要求的． 1．函数lg(1)y x =-的定义域为A ，函数3x y =的值域为B ，则A B =A.(0,1)B.(1,3)C.RD.∅2．下列函数中最小正周期为2π的函数是 A.sin()2y x π=-B.cos(2)3y x π=+C.2cos(3)3y x π=-D.tan()3y x π=- 3．下列函数中,满足“()()()f x y f x f y =+”的单调递增函数是A.()3f x x =B.()3log f x x =C.()f x =12xD.()0.5log f x x =4．某射击俱乐部四名运动员甲、乙、丙、丁在选拔赛中所得的平均环数x 及其方差2s 如表所示,若从中选送一人参加决赛,则最佳人选是 A.甲 B.乙 C.丙 D.丁 5．如图为一个几何体的三视图，则该几何体的外接球的表面积为A.4πB.8πC.12πD.16π 6．定积分dx ⎰的值为A.2π B.3πC. 12π-D. 13π-7．执行程序框图，如果输入5N =，则输出的数等于 A.54 B.45 C.56 D.67开始8．在数列{}n a 中,“12,2,3,4,n n a a n -==”是“{}n a 是公比为2的等比数列”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9．如图是王珊早晨离开家边走边背诵英语过程中离家距离y 与行走时间x 之间函数关系的图像．若用黑点表示王珊家的位置，则王珊步行走的路线可能是A B C D10．在实数集R 中，我们定义的大小关系“>”为全体实数排了一个序，类似地，我们在复数集C 上也可以定义一个称为“序”的关系，记为>“”，定义如下：对于任意两个复数111z a b i =+，222z a b i =+（1122,,,a b a b R ∈，i 为虚数单位），12z z >“”当且仅当121212b b a a a a >=>“”或“且”,下面命题中假命题是 A.1>i >0 B.若12z z >,23z z >,则13z z >C.若12z z >,则对于任意z C ∈,12z z z z +>+D.对于复数0z >,则12z z z z ⋅>⋅第二部分（非选择题，共100分）二、填空题：本大题共5小题，每小题5分，共25分．11．a ,b ,c ,d 四个物体沿同一方向同时开始运动,假设其经过的路程和时间x 的函数关系分别是12212324(),(),()log ,()2xf x x f x x f x x f x ====,如果运动的时间足够长,则运动在最前面的物体一定是 ☆ .12．已知直线l :0x y +=，则以与点(2,0)-关于直线l 对称的点为圆心，且与直线l 相切的圆的方程是 ☆ . 13．向量(2,sin ),(1,cosa b θθ==，θ为锐角，若a ||b ,则tan 2θ的值为 ☆ . 14．已知1cos32π=，21cos cos554ππ=，231cos cos cos 7778πππ=，.根据以上等式，可猜想出的一般结论是 ☆ .15．（注意：请在下列三题中任选一题作答，如果多做，则按所做的第一题计分）A ．(不等式选做题)设,m n R ∈,且sin cos 5m n αα+=,的最小值为 ☆ .B ．（几何证明选做题）已知PA ，PB 分别为⊙O 的两条切线，切点分别为,A B ，过PA 的中点Q 作割线交⊙O 于,C D 两点，若2,3QC CD ==，则PB = ☆ .C ．（坐标系与参数方程选做题）在极坐标系中，圆=4sin B ρ上的点到直线cos()4πρθ-=距离的最大值为 ☆ .三、解答题：本大题共6小题，共75分.解答应写出文字说明、证明过程或演算步骤.16．（本小题12分）在ABC ∆中,角,,A B C 的对边分别为,,a b c ,且232cos cos sin()sin cos 25A B B A B B B ---=-. (Ⅰ)求cos A 的值;(Ⅱ)若a =5b =,求角B 、边c 的值.17．（本小题12分）在平面直角坐标系中，已知点(1,0),(3,0)(0A B C -,. (Ⅰ)若2BM MC =,且AM x AB y AC =+,求x ,y 的值；(Ⅱ)若点(,)P x y 为直线1y =-上的一个动点，求证APC ∠恒为锐角．18．（本小题12分）如图，四棱锥E —ABCD 中，ABCD 是矩形，平面EAB ⊥平面ABCD ，AE=EB=BC=2，F 为CE 上的点，且BF ⊥平面ACE. (Ⅰ)求证:AE ⊥BE;(Ⅱ)求二面角A —CD —E 的余弦值. 19．（本小题12分）某超市为了解顾客的购物量及结算时间等信息,安排一名员工随机收集了在该超市购物的50位顾客的相关数据,如下表所示:已知这50位顾客中一次购物量少于10件的顾客占80%. (Ⅰ)确定x 与y 的值;(Ⅱ)若将频率视为概率,求顾客一次购物的结算时间X 的分布列与数学期望．20．（本小题13分）已知圆C 的圆心为(,0),3C m m <,,圆C 与椭圆E :22221(0)x y a b a b+=>>有一个公共点A(3,1),12,F F 分别是椭圆的左右焦点.(Ⅰ)求圆C 的标准方程;(Ⅱ)若过点P (4,4)且斜率为k 的直线1PF 与圆C 相切,求出椭圆E 和直线1PF 的方程.21．（本小题14分）已知函数2()2(1)2ln (0)f x x a x a x a =-++>. (Ⅰ)当1a =时,求曲线()y f x =在点(1,(1))f 处的切线方程; (Ⅱ)求()f x 的单调区间．参考答案2014.11一、选择题：本大题共10小题，每小题5分，共50分，在每小题给出的四个选项中，只有一项是符合题目要求的．11（理）．d 12（理）．()2222x y +-= 12（文）．12-13（理）．43- 14（理）．21coscoscos2121212n n n n n πππ=+++，n N *∈15（理）．A ．5 B ．．2+ 三、解答题．16（理）．解: (Ⅰ)由()232coscos sin sin cos 25A B B A B B B ---=-, 得()()3cos 1cos sin sin cos 5A B B A B B B -+--=-⎡⎤⎣⎦, 即()()3cos cos sin sin 5A B B A B B ---=-, 则()3cos 5A B B -+=-，即3cos 5A =- （6分） (Ⅱ)由3cos 5A =-，又0A π<<，∴4sin 5A =，由正弦定理得sin sin 2b A B a ==. 由题知a b >，则A B >，∴4B π=（注：也可由3cos 05A =-<得角A 为钝角，所以角B 为锐角；若角B 算两个值扣2分）根据余弦定理,有(22235255c c ⎛⎫=+-⨯⨯- ⎪⎝⎭,解得1c =，7c =-（舍去），故4B π=，1c = （12分）17（理）、19（文）．解:(Ⅰ)∵2BM MC =,∴23BM BC = ∴2212()3333AM AB BM AB BC AB AB AC AB AC =+=+=+-+=+ ∴13x =，23y = （6分）(Ⅱ)因为点(,)P x y 在直线1y -上，所以点(,1)P x -∴(1,13),(,1)PA x x PC x =---=-∴(1)()(1)1)PA PC x x =--⨯-+⨯2213421)4())044x x x =-+=-+>恒成立∴cos ,0||||PA PCPA PC PA PC <>=> （10分）若,,A C P 三点在一条直线上,则//PA PC ,得到(1)1)(1)()0x x x --⨯--⨯-=,方程无解,所以0APC ∠≠ 故APC ∠恒为锐角 （12分）18．解：(Ⅰ)（理）ABCD 是矩形，∴BC ⊥AB ，平面EAB ⊥平面ABCD ，平面EAB 平面ABCD=AB ，BC ⊂≠平面ABCD ，∴BC ⊥平面EAB ，EA ⊂≠平面EAB ，∴BC ⊥EA ，BF ⊥平面ACE ，EA ⊂≠平面ACE ，∴BF ⊥EA ，BCBF=B ，BC ⊂≠平面EBC ，BF ⊂≠平面EBC ，∴EA ⊥平面EBC ，BE ⊂≠平面EBC ，∴ EA ⊥BE （6分）(Ⅱ)（理）以O 为原点，分别以OE 、OB 所在直线为x 轴，y 轴如图建立空间直角坐标系，则:(2,0,0),(0,2,2),(0,2,0),(0,E C A D -，(2,0,0),(0,22,0),(2,2)OE CD DE ==-=-由(Ⅱ)知(2,0,0)OE =是平面ACD 的一个法向量，设平面ECD 的法向量为(,,)m x y z =，则00m DE m CD ⎧=⎪⎨=⎪⎩，即200z +-=-=⎪⎩，令x =0,1y z ==， 所以(2,0,1)m =， 设二面角A —CD —E 的平面角的大小为θ，由图得02πθ<<，cos cos ,3OE m θ=<>==，所以二面角A —CD —E的余弦值为3（12分） (Ⅱ)EA ⊥ BE，∴AB ==1112222ADCS AD DC BC AB ∆=⨯⨯=⨯⨯=⨯⨯=（8分） 设O 为AB 的中点，连结EO ， ∵AE=EB=2，∴EO ⊥AB ， 平面EAB ⊥平面ABCD ， ∴EO ⊥平面ABCD ，∴即EO 为三棱锥E —ADC的高，且12EO AB =⨯= （10分）∴114333D ABCE ADC ADC V V S EO --∆==⨯=⨯= （12分）19（理）．解：(Ⅰ)依题意得,18105080%x ++=⨯,35020%y +=⨯,解得12x =,7y =. （4分）(Ⅱ)该超市所有顾客一次购物的结算时间组成一个总体,所以收集的50位顾客一次购物的结算时间可视为总体的一个容量为50的随机样本,将频率视为概率得,12(0.5)0.2450P X ===,18(1)0.3650P X ===,10( 1.5)0.250P X ===,3(2)0.0650P X ===,7( 2.5)0.1450P X ===. （9分）所以X 的分布列为X 0.50.2410.36 1.50.220.06 2.50.14 1.25EX =⨯+⨯+⨯+⨯+⨯=. （12分） 20（理）．解: (Ⅰ)由已知可设圆C 的方程为)3(5)(22<=+-m y m x .将点A 的坐标代入圆C 的方程,得51)3(2=+-m ,即4)3(2=-m ,解得51==m m ，或. （4分） ∵3<m ,∴1=m ,∴圆C 的方程为5)1(22=+-y x . （6分） (Ⅱ)依题意,可得直线1PF 的方程为4)4(+-=x k y ,即044=+--k y kx .若直线1PF 与圆C 相切,则514402=++--k k k .∴0112442=+-k k ,解得21211==k k ，或.（8分）当211=k 时,直线1PF 与x 轴的交点横坐标为1136,不合题意,舍去; 当21=k 时,直线1PF 与x 轴的交点横坐标为4-,∴)0,4()0,4(421F F c ，，-=, （10分）∴由椭圆的定义得262251)43(1)43(2222221=+=+-+++=+=AF AF a ,∴23=a ,即182=a , ∴2222=-=c a b , ∵直线1PF 能与圆C 相切,∴直线1PF 的方程为042=+-y x ,椭圆E 的方程为121822=+y x . （13分）21（理）．解: (Ⅰ)因为1a =,2()42ln f x x x x =-+,所以2242'()(0)x x f x x x-+=>, (1)3f =-,'(1)0f =,所以切线方程为3y =-. （6分）(Ⅱ)222(1)22(1)()'()(0)x a x a x x a f x x x x-++--==>, 由'()0f x =得12,1x a x ==, （8分） 当01a <<时,在(0,)x a ∈或(1,)x ∈+∞时'()0f x >, 在(,1)x a ∈时'()0f x <,所以()f x 的单调增区间是(0,)a 和(1,)+∞,单调减区间是(,1)a ; （10分） 当1a =时,在(0,)x ∈+∞时'()0f x ≥,所以()f x 的单调增区间是(0,)+∞. （12分） 当1a >时,在(0,1)x ∈或(,)x a ∈+∞时'()0f x >, 在(1,)x a ∈时'()0f x <.所以()f x 的单调增区间是(0,1)和(,)a +∞,单调减区间是(1,)a . （14分）。

2015届上学期高三一轮复习第三次月考英语试题【新课标II-3】本试卷分第I卷(选择题)和第II卷(非选择题)两部分,共150分,考试时间120分钟.第I卷第一部分：听力（共两节，满分30分）第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1.What is the height of the man?A.Five feet six inches.B. Five feet seven inches.C. Four feet seven inches.2.Why will the woman treat the man?A.To thank him for informing him of the meeting.B.To introduce him some new friends.C.To talk with him about the new work plan.3.What are the two speakers talking about?A.The written part of a driving test.B.The written part of an English test.C.The spoken part of a driving test.4.Why doesn’t the man agree to turn down this road?A.He has to buy some fruits now.B.The shopping center has closed.C.The traffic is too busy now.5.What is the man’s mother?A. She is a professor.B. She is a doctor.C. She is a director.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。

2015届陕西省高新校区高三上学期11月模拟试题第一部分英语知识运用（共四节，满分55分）第一节语音知识（共5小题，每小题1分，共5分）从A、B、C、D四个选项中，找出其划线部分与所给单词的划线部分读音相同的选项。

1. judge A. museum B. husband C. true D. huge2. loose A. present B. usual C. usage D. rose3. south A. courage B. soup C. southern D. trousers4. regular A. apartment B. park C. similar D. hardship5. rather A. bath B. thinking C. feather D. Something第二节：情景对话（共5小题，每小题1分，满分5分）根据对话情景和内容，从对话后所给的选项中选出能填人每一空白处的最佳选项，并在答题卡上将该选项涂黑。

选项中有两个为多余选项。

Jane: Oh, that's Mr. Taylor. He is so boring.Mother: What do you mean?Jane: 6 And he's so quick tempered, mum.Mother: 7 Are you sure, darling?Jane: Yes, he gets angry very quickly.Mother : 8Jane: And do you know, he spends all his time looking at his reflection in the window, admiring himself.Mother : Really? 9Jane: Because he is vain, that's why! And conceited (自负的). He thinks he knows everything. Mother: Oh, Jane. Be reasonable. I'm sure you're exaggerating (夸张), Mr. Taylor seems such a nice and kind man.Jane: 10 He's mean (小气的) and cruel.Mother: Cruel? Now how can a history teacher be cruel?Jane: Because he only gave me two out of ten marks in my history test.Mother: Oh, now I understand, Jane. I think you'd better get on with your homework.A. Well, he isn't.B. And why does he do it ?C. His lessons send me to sleep.D. That's doesn't sound like Mr. Taylor at all.E. Quick tempered? Mr. Taylor ?F. Yes, he does.G. He doesn’t like me.第三节语法和词汇知识(共15小题；每小题l分，满分l5分)从每小题的A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该选项涂黑。

2015届高三会考试题理科数学2014.11本试卷分为两部分，第一部分为选择题，第二部分为非选择题. 满分150分，考试时间120分钟.参考公式：V sh =柱体， 13V s h =锥体， 343V R π=球，1()n n x nx -'=， 1(ln )x x -'=， ().xy x y xy '''=+ 第一部分（选择题，共50分）一、选择题：本大题共10小题，每小题5分，共50分，在每小题给出的四个选项中，只有一项是符合题目要求的． 1．函数lg(1)y x =-的定义域为A ，函数3x y =的值域为B ，则A B =A.(0,1)B.(1,3)C.RD.∅2．下列函数中最小正周期为2π的函数是 A.sin()2y x π=-B.cos(2)3y x π=+C.2cos(3)3y x π=-D.tan()3y x π=- 3．下列函数中,满足“()()()f x y f x f y =+”的单调递增函数是A.()3f x x =B.()3log f x x =C.()f x =12xD.()0.5log f x x =4．某射击俱乐部四名运动员甲、乙、丙、丁在选拔赛中所得的平均环数x 及其方差2s 如表所示,若从中选送一人参加决赛,则最佳人选是A.甲B.乙C.丙D.丁 5．如图为一个几何体的三视图，则该几何体的外接球的表面积为A.4πB.8πC.12πD.16π 6．定积分⎰的值为A.2π B.3πC. 12π-D. 13π-7．执行程序框图，如果输入5N =，则输出的数等于 A.54 B.45 C.56 D.678．在数列{}n a 中,“12,2,3,4,n n a a n -==”是“{}n a 是公比为2的等比数列”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9．如图是王珊早晨离开家边走边背诵英语过程中离家距离y 与行走时间x 之间函数关系的图像．若用黑点表示王珊家的位置，则王珊步行走的路线可能是A B C D10．在实数集R 中，我们定义的大小关系“>”为全体实数排了一个序，类似地，我们在复数集C 上也可以定义一个称为“序”的关系，记为>“”，定义如下：对于任意两个复数111z a b i =+，222z a b i =+（1122,,,a b a b R ∈，i 为虚数单位），12z z >“”当且仅当121212b b a a a a >=>“”或“且”,下面命题中假命题是 A.1>i >0 B.若12z z >,23z z >,则13z z >C.若12z z >,则对于任意z C ∈,12z z z z +>+D.对于复数0z >,则12z z z z ⋅>⋅第二部分（非选择题，共100分）二、填空题：本大题共5小题，每小题5分，共25分．11．a ,b ,c ,d 四个物体沿同一方向同时开始运动,假设其经过的路程和时间x 的函数关系分别是12212324(),(),()log ,()2x f x x f x x f x x f x ====,如果运动的时间足够长,则运动在最前面的物体一定是 ☆ .12．已知直线l :0x y +=，则以与点(2,0)-关于直线l 对称的点为圆心，且与直线l 相切的圆的方程是 ☆ . 13．向量(2,sin ),(1,cosa b θθ==，θ为锐角，若a ||b ,则tan 2θ的值为 ☆ . 14．已知1cos32π=，21cos cos554ππ=，231cos cos cos 7778πππ=，.根据以上等式，可猜想出的一般结论是 ☆ .15．（注意：请在下列三题中任选一题作答，如果多做，则按所做的第一题计分）A ．(不等式选做题)设,m n R ∈,且sin cos 5m n αα+=,的最小值为 ☆ .B ．（几何证明选做题）已知PA ，PB 分别为⊙O 的两条切线，切点分别为,A B ，过PA 的中点Q 作割线交⊙O 于,C D两点，若2,3QC CD ==，则PB = ☆ .C ．（坐标系与参数方程选做题）在极坐标系中，圆=4sin B ρ上的点到直线cos()4πρθ-=距离的最大值为 ☆ .三、解答题：本大题共6小题，共75分.解答应写出文字说明、证明过程或演算步骤.16．（本小题12分）在ABC ∆中,角,,A B C 的对边分别为,,a b c ,且232cos cos sin()sin cos 25A B B A B B B ---=-. (Ⅰ)求cos A 的值;(Ⅱ)若a =,5b =,求角B 、边c 的值.17．（本小题12分）在平面直角坐标系中，已知点(1,0),(3,0)(0A B C -,. (Ⅰ)若2BM MC =,且AM x AB y AC =+,求x ,y 的值；(Ⅱ)若点(,)P x y 为直线1y =-上的一个动点，求证APC ∠恒为锐角．18．（本小题12分）如图，四棱锥E —ABCD 中，ABCD 是矩形，平面EAB ⊥平面ABCD ，AE=EB=BC=2，F 为CE 上的点，且BF ⊥平面ACE.(Ⅰ)求证:AE ⊥BE;(Ⅱ)求二面角A —CD —E 的余弦值. 19．（本小题12分）某超市为了解顾客的购物量及结算时间等信息,安排一名员工随机收集了在该超市购物的50位顾客的相关数据,如下表所示:已知这50位顾客中一次购物量少于10件的顾客占80%. (Ⅰ)确定x 与y 的值;(Ⅱ)若将频率视为概率,求顾客一次购物的结算时间X 的分布列与数学期望．20．（本小题13分）已知圆C 的圆心为(,0),3C m m <,圆C 与椭圆E :22221(0)x y a b a b+=>>有一个公共点A(3,1),12,F F 分别是椭圆的左右焦点.(Ⅰ)求圆C 的标准方程;(Ⅱ)若过点P (4,4)且斜率为k 的直线1PF 与圆C 相切,求出椭圆E 和直线1PF 的方程.21．（本小题14分）已知函数2()2(1)2ln (0)f x x a x a x a =-++>. (Ⅰ)当1a =时,求曲线()y f x =在点(1,(1))f 处的切线方程; (Ⅱ)求()f x 的单调区间．2015届高三会考数学试题参考答案2014.11一、选择题：本大题共10小题，每小题5分，共50分，在每小题给出的四个选项中，只有一项是符合题目要求的．11（文理）．d 12（理）．()2222x y +-= 12（文）．12-13（理）．43- 13（文）．1x =- 14（文理）．21coscoscos 2121212n n n n n πππ=+++，n N *∈15（文理）．A ．5 B ．．2+三、解答题．16（理）．解: (Ⅰ)由()232coscos sin sin cos 25A B B A B B B ---=-, 得()()3cos 1cos sin sin cos 5A B B A B B B -+--=-⎡⎤⎣⎦, 即()()3cos cos sin sin 5A B B A B B ---=-, 则()3cos 5A B B -+=-，即3cos 5A =- （6分） (Ⅱ)由3cos 5A =-，又0A π<<，∴4sin 5A =，由正弦定理得sin sin 2b A B a ==. 由题知a b >，则A B >，∴4B π=（注：也可由3cos 05A =-<得角A 为钝角，所以角B 为锐角；若角B 算两个值扣2分）根据余弦定理,有(22235255c c ⎛⎫=+-⨯⨯- ⎪⎝⎭,解得1c =，7c =-（舍去），故4B π=，1c = （12分）16（文）．解:(Ⅰ)在△ABC 中，∵sin 2sin C B =，由正弦定理得2c b =，又2b =，∴4c = （6分）(Ⅱ) ∵,,b a c 成等比数列，∴2a bc = 又∵2c b =，∴222a b =在△ABC 中,由余弦定理得 222222423cos 2224b c a b b b A bc b b +-+-===⨯ （12分） 17（理）、19（文）．解:(Ⅰ)∵2BM MC =,∴23BM BC =∴2212()3333AM AB BM AB BC AB AB AC AB AC =+=+=+-+=+ ∴13x =，23y = （6分）(Ⅱ)因为点(,)P x y 在直线1y =-上，所以点(1)P x -∴(1,13),(,1)PA x x PC x =---=-∴(1)()(1)1)PA PC x x =--⨯-+⨯2213421)4())044x x x =-+=-+>恒成立∴cos ,0||||PA PCPA PC PA PC <>=> （10分）若,,A C P 三点在一条直线上,则//PA PC ,得到(1)1)(1)()0x x x --⨯--⨯-=,方程无解,所以0APC ∠≠ 故APC ∠恒为锐角 （12分）17（文）．解:(Ⅰ)因为样本容量与总体中的个数的比是616012018060=++,所以样本中包含三个地区的个体数量分别是: 160160⨯=,1120260⨯=,1180360⨯=, 所以A,B,C 三个地区的商品被选取的件数分别为1,2,3. （6分）(Ⅱ)设6件来自A,B,C 三个地区的样品分别为12123;,;,,A B B C C C ,则抽取的这2件商品构成的所有基本事件为: 12{,},{,}A B A B ,123{,},{,},{,}A C A C A C ,12111213212223{,},{,},{,},{,};{,},{,},{,}B B B C B C B C B C B C B C , 121323{,},{,},{,}C C C C C C ,共15个. （9分）每个样品被抽到的机会均等,因此这些基本事件的出现是等可能的, 记事件D:“抽取的这2件商品来自相同地区”,则事件D 包含的基本事件有:12121323{,},{,},{,},{,}B B C C C C C C 共4个. 所有4()15P D =,即这2件商品来自相同地区的概率为415. （12分） 18．解：(Ⅰ)（文理）ABCD 是矩形，∴BC ⊥AB ，平面EAB ⊥平面ABCD ，平面EAB 平面ABCD=AB ，BC ⊂≠平面ABCD ，∴BC ⊥平面EAB ，EA ⊂≠平面EAB ，∴BC ⊥EA ，BF ⊥平面ACE ，EA ⊂≠平面ACE ，∴BF ⊥EA ，BCBF=B ，BC ⊂≠平面EBC ，BF ⊂≠平面EBC ，∴EA ⊥平面EBC ，BE ⊂≠平面EBC ，∴ EA ⊥BE （6分）(Ⅱ)（理）以O 为原点，分别以OE 、OB 所在直线为x 轴，y 轴如图建立空间直角坐标系，则:(2,0,0),(0,2,2),(0,2,0),(0,E C A D -，(2,0,0),(0,22,0),(2,2)OE CD DE ==-=-由(Ⅱ)知(2,0,0)OE=是平面ACD 的一个法向量，设平面ECD 的法向量为(,,)m x y z =，则0m DE m CD ⎧=⎪⎨=⎪⎩， 即200z -=-=⎪⎩，令x =0,1yz ==， 所以(2,0,1)m =， 设二面角A —CD —E 的平面角的大小为θ，由图得02πθ<<，cos cos ,OE m θ=<>==，所以二面角A —CD —E的余弦值为3（12分） (Ⅱ)（文）EA ⊥ BE ，∴AB ==1112222ADCS AD DC BC AB∆=⨯⨯=⨯⨯=⨯⨯=（8分） 设O 为AB 的中点，连结EO， ∵AE=EB=2，∴EO⊥AB ， 平面EAB ⊥平面ABCD ， ∴EO ⊥平面ABCD ，∴即EO 为三棱锥E —ADC 的高，且12EO AB =⨯= （10分） ∴114333D ABCE ADC ADC V V S EO --∆==⨯=⨯= （12分）19（理）．解：(Ⅰ)依题意得,18105080%x ++=⨯,35020%y +=⨯,解得12x =,7y=. （4分）(Ⅱ)该超市所有顾客一次购物的结算时间组成一个总体,所以收集的50位顾客一次购物的结算时间可视为总体的一个容量为50的随机样本,将频率视为概率得,12(0.5)0.2450P X ===,18(1)0.3650P X ===,10( 1.5)0.250P X ===,3(2)0.0650P X ===,7( 2.5)0.1450P X ===. （9分） 所以X 的分布列为X 0.50.2410.36 1.50.220.06 2.50.14 1.25EX =⨯+⨯+⨯+⨯+⨯=. （12分） 20（理）．解: (Ⅰ)由已知可设圆C 的方程为)3(5)(22<=+-m y m x .将点A 的坐标代入圆C 的方程,得51)3(2=+-m ,即4)3(2=-m ,解得51==m m ，或. （4分） ∵3<m ,∴1=m ,∴圆C 的方程为5)1(22=+-y x . （6分） (Ⅱ)依题意,可得直线1PF 的方程为4)4(+-=x k y ,即044=+--k y kx . 若直线1PF 与圆C 相切,则514402=++--k k k .∴0112442=+-k k ,解得21211==k k ，或.（8分）当211=k 时,直线1PF 与x 轴的交点横坐标为1136,不合题意,舍去;当21=k 时,直线1PF 与x 轴的交点横坐标为4-,∴)0,4()0,4(421F F c ，，-=, （10分） ∴由椭圆的定义得262251)43(1)43(2222221=+=+-+++=+=AF AF a ,∴23=a ,即182=a , ∴2222=-=c a b , ∵直线1PF 能与圆C 相切,∴直线1PF 的方程为042=+-y x ,椭圆E的方程为121822=+y x . （13分）20（文）．解:(Ⅰ)由椭圆方程221412x y +=，得212a =,24b =,2228c a b =-=,c =所以椭圆C 的焦点坐标为,(0,-,长轴长2a 为（6分）(Ⅱ)由2231220x y xy ⎧+=⎨--=⎩，，可得:220x x --=.解得:2x =或1x =-. 所以点,A B 的坐标分别为(2,0),(1,3)--.（8分）所以,A B 中点坐标为13(,)22-,||AB ==. （10分）所以以线段AB 为直径的圆的圆心坐标为13(,)22-,（12分）所以 以线段AB 为直径的圆的方程为22139()()222x y -++=. （13分）21（文理）．解: (Ⅰ)因为1a =,2()42ln f x x x x =-+,所以2242'()(0)x x f x x x-+=>,(1)3f =-,'(1)0f =,所以切线方程为3y =-. （6分）(Ⅱ)222(1)22(1)()'()(0)x a x a x x a f x x x x-++--==>, 由'()0f x =得12,1x a x ==, （8分） 当01a <<时,在(0,)x a ∈或(1,)x ∈+∞时'()0f x >, 在(,1)x a ∈时'()0f x <,所以()f x 的单调增区间是(0,)a 和(1,)+∞,单调减区间是(,1)a ; （10分） 当1a =时,在(0,)x ∈+∞时'()0f x ≥,所以()f x 的单调增区间是(0,)+∞. （12分） 当1a >时,在(0,1)x ∈或(,)x a ∈+∞时'()0f x >, 在(1,)x a ∈时'()0f x <.所以()f x 的单调增区间是(0,1)和(,)a +∞,单调减区间是(1,)a . （14分）。