2009年普通高等学校招生全国统一考试数学理试题(宁夏卷,含答案)
2009年普通高等学校招生全国统一考试理科数学(必修+选修Ⅱ)

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2009宁夏高考数学试题答案(理数)

工商管理专业学位外语考试模拟试题(1)2004.12一、语音题(每空1分,共10分)1、breach A. break B. theatre C. meadow D. least2、notice A. stomachs B. houses C. mouths D. reasonable3、opposite A. companion B. balloon C. stroll D. historic O:4、scatter A. laboratory B. separate C. gravity D. various5、twinkle A. windy B. drink C. footprint D. interesting6、shook A. shoot B. food C. shoe D. wood7、occasionally A. population B. Russian C. question D. television8、pressure A. directly B. oxygen C. absence D. camera9、float A. flower B. brown C. hometown D. bellows10、bulletin A. bury B. Prussian C. bullet D. punishment二、单选题(每空1.5分,共30分)11、Y ou are lucky since you've never ____anything in your life.A. lostB. gotC. stolenD. found12、W ould you please help me to ____up the present for the old gentleman?A. wrapB. tieC. coverD. send13、Since your supervisor has _____ the time for a talk, you must make sure that you will be there on time.A. predictedB. specifiedC. yieldedD. classified14、His _____ handwriting resulted from haste and carelessness rather than from the inability to form the letters correctly.A. unreadableB. beautifulC. carefulD. undecided15、My friend was full of _____ for the way in which I had so quickly learned to drive a car.A. prideB. surpriseC. admirationD. jealousy16、What time does my flight leave ____Tuesday?A. atB. inC. byD. on17、It has been a long time _____I saw you last time.A. sinceB. forC. beforeD. after18、What are you doing? I'm _____the bedroom for my wallet.A. lookingB. findingC. searchingD. searching for19、The little girl woke up screaming because she had had a_____.A. daydreamB. nightmareC. fantasyD. sweet dream20、The manager ___that the new employees go through professional training before they started working.A. persistedB. insistedC. resistedD. assisted21、She talked to him for a long time and ___him from doing that dangerous job.A. persuadedB. dissuadedC. overcameD. conquered22、The textile industry _____ greatly to the economy of Hong Kong.A. addsB. amountsC. contributesD. leads23、They decided to chase the cow away ______ it did more damage.A. unlessB. untilC. beforeD. what24、All _______ is a continuous supply of the basic necessities of life.A. what is neededB. for our needsC. the thing neededD. that is needed25、The manufacturers _____ carried out one of the Chairman's proposals, but they didn't.A. must haveB. couldn't haveC. ought to haveD. shouldn't have26、They are believed ____ in their experiment.A. to have already succeededB. to succeed alreadyC. to be succeededD. to be succeed27、Y ou ought not to ____ him the news that day.A. tellB. be tellingC. have toldD. had told28、I know you're planning to travel this summer, but do you know_____?A. how much cost it will beB. how much has it costC. how much will it costD. how much it will cost29、Y our little girl is becoming very rude. Y ou _____scold her.A. mayB. canC. oughtD. ought to30、Please listen to me. It's inappropriate for you to persist in ___ this.A. to doB. doC. doingD. having done三、词形变换(每空1分,共5分)31、(explode) Did you hear the terrible __explosion____last night?32、(disappoint) To his great __disappointment___, Mrs. White won't be able to join us in the party this weekend.33、(promote) He looks happy today. I guess he has got a_promotion_____.34、(economic)I am a college student now. My major is__economics___.35、(add)They need_additional__ help to get the work done as planed.四、完形填空(每空1分,共20分)It was the night before the composition was due. As I looked at the list of topics (题目) , "The Art of Eating Spaghetti (意大利面条) " caught my eye. The word "spaghetti" brought back the 36 of an evening at Uncle Alien' s in Belleville 37 all of us were seated around the table and Aunt Pat 38 spaghetti for supper. Spaghetti was an exotic treat in 39 days. Never had I eaten spaghetti, and 40 of the grown-ups had enough experience to be 41 it. What laughing 42 we had about the 43 respectable method for moving spaghetti from plate to mouth. 44 , I wanted to write about that, but I wanted to 45 it down simply for my own 46 , not for Mr. Fleagle, my composition teacher. 47 , I would write something else.When I finished it the night was half gone and there was no 48 left to write a proper composition for Mr. Fleagle. There was no choice next morning but to 49 my work. Two days passed before Mr. Fleagle returned the 50 papers. He said, "Now, class, I want to read you a composition, "The Art of Eating Spaghetti'. "My words! He was reading my words out 51 to the whole class. 52 laughed, then the whole class was laughing with open-hearted enjoyment.I did my best not to show 53 , but what I was feeling was pure happiness, 54 my words had the power to make people 55 .36 A. memory B. thought C. knowledge D. experience37 A. when B. where C. since D. after38 A. cooked B. served C. got D. made39 A. their B. past C. last D. those40 A. none B. one C. earns D. neither41 A. careful about B. good at C. fond of D. interested in42 A. speeches B. lessons C. sayings D. arguments43 A. nearly B. naturally C. officially D. socially44 A. Especially B. Probably C. Suddenly D. Fortunately45 A. settle B. put C. bite D. let46 A. work B. story C. luck D. joy47 A. However B. Therefore C. As for him D. Except for that48 A. time B. excuse C. way D. idea49 A. give up B. continue C. hand in D. delay50 A. written B. graded C. collected D. calmly51 A. loud B. fast C. publicly D. calmly52 A. People B. Nobody C. Somebody D. I53 A. shock B. wonder C. worry D. pleasure54 A. if B. for C. while D. although55 A. excited B. satisfied C. think D. laugh五、阅读理解(每题1分,共20分)(一)Most great inventors in the capitalist society meet with much opposition to their inventions from the people who place their own interests before those of the people. Big monopolies try to buy inventions and turn them to their own profits. When they fail, they resort to other tricks. Inventors have to overcome thousands of difficulties put in their path before they can see their dreams realized.When George Stephenson was experimenting with the stream engine, there was much opposition from the Parliament, the newspaper, and landlords. They claimed that the noise and the smoke would kill cows, horses and sheep, that the engine would burst or that hot coals from it would set fire to their houses.So it was a very difficult matter for George Stephenson to persuade the people that trains could go on smooth rails, could pull carriages and wagons full of people and goods, and that there was no great danger of accidents.However, he was able to do it, and the first train driven by Stephenson himself showed that the newly invented steam engine was a complete success.56. The word "those" in the first sentence refers toA. inventorsB. inventionsC. interestsD. monopolies57.Why do big monopolies buy inventions?A. They want to make a further research.B. They want to improve them.C. They want to make more money.D. They want to play tricks with inventors.58.Which of the following is not the very reason for the opposition to Stephenson's experiment?A. It would make terrible noise.B. It would give off heavy smoke.C. It would waste coal.D. It would set fire to houses.59. The word "dream" in the first paragraph refers to _____A. inventors' interests in inventionsB. inventors' plans for inventionsC. the profits inventors would makeD. the difficulties in their inventions.60. What is the main idea of this paragraph?A. Stephenson invented the stream engine.B. Big monopolies opposed to inventions.C. Inventors' difficulties in their invention.D. Oppositions to Stephenson the inventor.(二)As a young girl, Elizabeth Barrett (Browning英国作家勃朗宁) ruptured a blood vessel on the lungs which did not heal. The physician consigned her to a milder climate for the winter and she went Devonshire for restoration. Among the members of her family who accompanied her to those healing shores was her eldest brother.For a whole year they lived side by side in affectionate companionship, she all the while being greatly benefited by mild sea breezes of Torquay.One summer morning her brother went board a small sailboat with two friends for a trip of several hours around the coast. Just as the vessel came in sight of the window where Miss Barrett sat watching, the boat struck a sunken reef; and all who were in it went down and perished in the sea, before assistant could be rendered. None of the bodies were ever found although the whole village, full of sympathy, assembled in search. This was the tragedy which utterly prostrated for some years afterwards the health and soul of Elizabeth Barrett. Somehow she felt that she herself had in some measure been the cause of all this horror, and she suffered accordingly. Her whole being seemed shattered, and a year longer elapsed before, she was able to be more to London. This fatal event, which so saddened her youth gave also a still deeper devotional feeling to hue ofsorrow so apparent in many of her earlier pieces.61.What sort of climate did Elizabeth's doctor prescribe?A. Temperate.B. Tropical.C. Humid.D. Arid.62.How many people were drowned when the boat sank?A. OneB. TwoC. ThreeD. The article doesn't indicate63. How did the tragedy affect Elizabeth?A. It affected her physically but not emotionally.B. It affected her emotionally but not physically.C. It did not affect her in any way.D. It affected her both physically and emotionally.64. Whom did she blame for the accident?A. Her brother.B. Herself.C. No one.D. The villagers.65. The incident had _____ on her poetry.A. no influenceB. very little influenceC. a superficial influenceD. a strong influence(三)SYDNEY: As they sat sharing sweets beside a swimming pool in 1999 , Shane Gould and Jessicah Schipper were simply getting along well , chatting about sport , life and " anything else that came up . "Y et in Sydney next month , they will meet again by the pool , and for a short time the friends will race against each other in the 50-meter butterfly(蝶泳)in the Australian championships at Homebush Bay .Gould , now a 47-year-old mother of four , has announced she will be making a return to elite competition(顶级赛事)to swim the one event , having set a qualifying(合格的)time of 30.32 seconds in winning gold at last year's United States Masters championships . Her comeback comes 32 years after she won three golds at the Munich Olympics .Schipper , now a 17-year-old from Brisbane with a bright future of going to Athens for her first Olympics , yesterday recalled(回忆)her time with Gould five years ago ." I was at a national youth camp on the Gold Coast and Shane had come along to talk to us and watch us train , " Schipper explained . " It seemed as if we had long been good friends . I don't know why . W e just started talking and it went from there . "" She had a lot to share with all of us at that camp . She told us stories about what it was likeat big meets like the Olympics and what it's like to be on an Australian team . It was really interesting . "Next time , things will be more serious . " I will still be swimming in the 50m butterfly at the nationals , so there is a chance that I could actually be competing against Shane Gould , " said Schipper , who burst onto the scene at last year's national championships with second places in the 100m and 200m butterfly .66. What is the passage mainly about ?A. Stories happening in swimming competitions .B. Two women swimmers winning Olympic golds .C. Lessons learned from international swimming championships .D. Friendship and competition between two swimmers .67. Gould and Schipper are going to .A. talk about sport and lifeB. go back to elite competitionC. set a qualifying time and win goldD. take part in the same sports event68. Gould won her three Olympic golds when she was .A. 15B. 17C. 22D. 3069. The underlined word " it " in the fifth paragraph probably refers to .A. the OlympicsB. the youth campC. the friendshipD. the Australian team70. What Schipper said showed that she .A. was no longer Gould's friendB. had learned a lot from GouldC. was not interested in Gould's storiesD. would not like to compete against Gould(四)Giving BackFair W ayThe W estborough High School golf team had taken the official photos with the state prize. The other teams, disappointed, were on the bus heading home. And then W estborough instructor Greg Rota noticed something wrong with one of the score cards. A 9 had been recorded as a 7. They were not the state prize winner; W obum High had won. "No one would have known," saidW obum's instructor, Bob Doran. For Rota, it wasn't a difficult decision: "The prize wasn't ours to take."Coin Stars"College students are lazy, but they also want to help," says University of Pennsylvania graduate Dana Hork. So she made it easy, placing cups in rooms where students could leave their spare coins, and handing out cups to first-year students to keep in their rooms. Her " Change for Change" effort has collected $40,000 for charities 慈善机构) , which were decided upon by students.Never ForgottenA school in Massachusetts received a $ 9.5 million check from Jacques LeBermuth. But it took officials several days of digging to discover his connection to the school. Records showed the LeBermuth came from Belgium and studied in the school in the 1920s. When his family fell on hard times, he was offered free room and board. LeBermuth became a trader, owned shares of AT&T and lived off the earnings until he died, at age 89.71. What did Greg Rota probably do in the end?A. Took photos of Doran.B. Had a meeting with Doran.C. Returned the prize to the organizer.D. Apologized to W obum High School.72. Greg Rota's decision shows that he was _______.A. honestB. politeC. carefulD. friendly73. The underlined word "Change" in the second paragraph means _______.A. ideaB. decisionC. cupsD. coins74. What did the school officials do after receiving the check from Mr. LeBermuth?A. They tried to find out why he gave them the money.B. They went to Belgium to pay their respects to him.C. They dug out the records that were buried underground.D. They decided to offer their students free room and board.75. Jacques LeBermuth gave the money to the school because _______.A. the school asked for itB. he had no need for that much moneyC. the school had helped him in the pastD. he wanted to be remembered by the students六、写作题(共15分)Directions: For this part, you are required to write a composition on the topic Is Competition a Good or Bad Thing? Y our composition should be based on the following outline. Y our composition should be no less than 120 words.Outline: 1. The seriousness of the present competition2. The advantages of competition3. The disadvantages of competitionCompetition is the method or practice of trying to do better than other people to win or become successful in a specific skill. As a camp, I believe competition is a way of nurturing one's ability and talent in such a way that the person is encouraged to excel more than other skilled person. In some cases and situation, competition may mean a struggle between two or more different competitors.In the workplace, competition has received some bad press in recent years. Greed and layoffs are the two most frequently touted sins of competition. These two sins, however, can always be minimized with new rules (if the appropriate governing bodies are willing to live up to this responsibility of making such new rules) such as increased taxes on the greedy and work replacement/ training/ length-of-workweek rules for employees.参考答案1、D.2、A.3、B.4、C.5、 B.6、 D.7、D.8、A.9、 D.10、C.11、A.12、A.13、 B.14、 A. 15、C.16、 D.17、A.18、C. 19、B.20 B.21、B.22、C.23、C. 24、 D.25、C.26、A.27、C.28、D.29、D. 30、C.31、explosion32、disappointment33、promotion34、economics35、additional36、A.37、A.38、B.39、B. 40、A41、B42、D43、D44、C45、B46、D47、C48、A49、C50、B51、A52、C53、D54、B55、D56、C57、C58、C59、B60、D61、A62、C63、D64、B65、D66、D67、D68、A69、C70、B71、C72、A73、D74、A75、C。
09年全国高考数学试题——全国卷1(理科)含答案

09年普通高等学校招生全国统一考试理科数学(必修+选修Ⅱ)本试卷分第I 卷(选择题)和第II 卷(非选择题)两部分.第I 卷1至2页,第II 卷3至4页.考试结束后,将本试卷和答题卡一并交回.第Ⅰ卷考生注意:1.答题前,考生在答题卡上务必用0.5毫米黑色墨水签字笔将自己的姓名、准考证号、填写清楚 ,并贴好条形码.请认真核准条形码上的准考证号、姓名和科目.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,再选涂其他答案标号.在试题卷上作答无效.......... 3.本卷共12小题,每小题5分,共60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.参考公式:如果事件A B ,互斥,那么 球的表面积公式()()()P A B P A P B +=+ 24πS R =如果事件A B ,相互独立,那么 其中R 表示球的半径()()()P A B P A P B = 球的体积公式如果事件A 在一次试验中发生的概率是P ,那么 34π3V R = n 次独立重复试验中恰好发生k 次的概率其中R 表示球的半径()(1)(01,2)k k n k n n P k C P P k n -=-=,,, 一、选择题(1)设集合A={4,5,7,9},B={3,4,7,8,9},全集U=AB ,则集合[u (A B )中的元素共有 (A )3个 (B )4个 (C )5个 (D )6个(2)已知1iZ +=2+I,则复数z= (A )-1+3i (B)1-3i (C)3+I (D)3-i(3) 不等式11X X +-<1的解集为 (A ){x }{}011x x x 〈〈〉 (B){}01x x 〈〈(C ){}10x x -〈〈 (D){}0x x 〈(4)设双曲线22221x y a b-=(a >0,b >0)的渐近线与抛物线y=x 2 +1相切,则该双曲线的离心率等于(A (B )2 (C (D(5) 甲组有5名同学,3名女同学;乙组有6名男同学、2名女同学。
2009宁夏高考数学试题答案(理数)

小班下学期美术教学进度表2012.2附页:(一)小刺猬背果果本活动是让孩子学习用半圆加线条来画刺猬,同时可以激发孩子用圆加线等画出各种果子。
在本学期中开始让孩子有目的地先勾线,再涂色。
目标:学习用半圆画出不同形状的刺猬;学习用水笔先勾图。
准备:范画、水笔、蜡笔、纸。
过程:1、出示范画,介绍内容,引导观察。
(1)、画上有谁?它在干什么?小刺猬的身体是什么形状的?身体上又有什么?有什么用?(2)、介绍内容:小刺猬来到树林,看到树上有很多果果,可是它不会爬树。
正在这时,风姑娘帮助它把果子吹下来了,小刺猬想把果子背回家,就在地上打滚,把果子插在刺上,手里又捧了几个果子回家了。
(3)、小刺猬背果子时,肚子是直直的还是平平的?弯弯的背在肚子上面还是旁边?果子是怎么背上去的?什么地方还可以拿果子?2、教师示范用水笔勾线的方法画刺猬。
3、幼儿创作,教师指导。
提示幼儿画平的和直立的半圆形,可变换方向;在刺上插果子;多画些刺猬和果子。
4、引导评价(二)我和妈妈拍照妈妈是孩子最爱的人,他们对妈妈有很深的感情,在三八节之时,让孩子来画画自己和妈妈,进行爱妈妈的教育是非常好的,本次活动中可以让孩子学习用两个图形连接与线条的组合来画出人,对小班下学期的孩子是适合的。
目标:初步学习用两个图形连接与线条组合画人。
准备:水笔与蜡笔,幼儿与妈妈的合影数张,以贴好花边的纸像架。
过程:1、欣赏与讨论。
出示小朋友与妈妈的合影,引导观察:这是谁和妈妈的照片?照片上谁是宝宝?谁是妈妈?哪个大?哪个小?妈妈梳着怎样的头发?穿着什么衣服?宝宝呢?他们在哪里拍的照片?2、操作与思考(1)、请幼儿尝试画人,边画边提问:照片上的人头是什么形状?妈妈的身体是什么形状?再请幼儿画手和脚。
谁会画妈妈的头发、眼睛、鼻子、嘴巴?教师引导孩子想一想妈妈的头发是长的还是短的,及眼睛、嘴巴的大小等。
(2)、教师在孩子画的旁边画另一个人,边画边请幼儿说出特征。
3、幼儿作画,教师指导。
2009年高考数学(宁夏)理(word版含答案)

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,则点 O,N,P 依次是 △ ABC 的( PA ·PB PB· PC PC PA · A.重心、外心、垂心 B.重心、外心、内心 C.外心、重心、垂心 D.外心、重心、内心 (注:三角形的三条高线交于一点,此点为三角 形的垂心) 10 . 如 果 执 行 右 边 的 程 序 框 图 , 输 入 x 2,h 0 . ,那么输出的各个数的和等于 5 ( ) A.3 B. 3.5 C. 4 D.4.5 11.一个棱锥的三视图如图,则该棱锥的全面积 (单位:cm2)为( ) A.48+12 2 C.36+12 2 3 4 6 6 B.48+24 2 D.36+24 2 3 4 )
2009 年普通高等学校招生全国统一考试(宁夏卷) 理 科 数 学
本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分.其中第Ⅱ卷第(22)~(24) 题为选考题, 其它题为必考题. 考生作答时, 将答案答在答题卡上, 在本试卷上答题无效. 考 试结束后,将本试卷和答题卡一并交回. 注意事项: 1.答题前,考生务必先将自己的姓名、准考证号填写在答题卡上,认真核对条形码上的姓 名、准考证号,并将条形码粘贴在答题卡的指定位置上. 2.选择题答案使用 2B 铅笔填涂,如需改动,用橡皮擦干净后,再选涂其它答案标号;非 选择题答案使用 0.5 毫米的黑色中性(签字)笔或碳素笔书写,字体工整、笔迹清楚. 3.请按照题号在各题的答题区域(黑色线框)内作答,超出答题区域书写的答案无效. 4.保持卡面清洁,不折叠,不破损. 5.做选考题时,考生按照题目要求作答,并用 2B 铅笔在答题卡上把所选题目对应的题号 涂黑. 参考公式: 样本数据 x1,x2, „,xn 的标准差 s=
2009宁夏高考数学试题答案(理数)

2009年普通高等学校招生全国统一考试(宁夏卷)数学(理工农医类)参考答案一、选择题(每小题5分,共60分)(1)B(2)D(3)B(4)B(5A(6)B(7)D(8)B(9)A(10)C(11)C(12)C(13)10131(14)3(15)4(16)9(17)解:在△ABC中,∠DAC=30°, ∠ADC=60°-∠DAC=30,所以CD=AC=0.1 又∠BCD=180°-60°-60°=60°, 故CB 是△CAD 底边AD 的中垂线,所以BD=BA,在△ABC 中,,AB C sin CB C A sin ∠=∠A AB 即AB=,2062315sin ACsin60+= 因此,BD=。
km 33.020623≈+ 故B ,D 的距离约为0.33km.(18)解:取CD 的中点G ,连接MG ,NG 。
设正方形ABCD ,DCEF 的边长为2, 则MG ⊥CD ,MG=2,NG=2.因为平面ABCD ⊥平面DCED , 所以MG ⊥平面DCEF ,可得∠MNG 是MN 与平面DCEF 所成的角。
因为MN=6,所以sin ∠MNG=36为MN 与平面DCEF 所成角的正弦值 (19)解:(Ⅰ)依题意X 的分列为(Ⅱ)设A 1表示事件“第一次击中目标时,击中第i 部分”,i=1,2.B 1表示事件“第二次击中目标时,击中第i 部分”,i=1,2. 依题意知P (A 1)=P(B 1)=0.1,P (A 2)=P(B 2)=0.3,11111122A A B A B A B A B =⋃⋃⋃,所求的概率为11111122()()()()P A P A B P A B P A B P A B =+++()11111122()()())()()()P A B P A P B P A P B P A P B +++( 0.10.90.90.10.10.10.30.30.28⨯+⨯+⨯+⨯=(20)解:(Ⅰ)由题意,c=1,可设椭圆方程为2219114b b+=+,解得23b =,234b =-(舍去) 所以椭圆方程为22143x y +=。
da2009年高考数学(宁夏)理
由已知可得 ,可得 .
所以 平分 .
23.解:(Ⅰ) : , : .
为圆心是 ,半径是1的圆.
为中心是坐标原点,焦点在 轴上,长半轴长是8,短半轴长是3的椭圆.
(Ⅱ)当 时, 、 ,故 .
为直线 , 到 的距离 .
从而当 时, 取得最小值 .
24.解:(Ⅰ) .
(Ⅱ)依题意, 满足
解不等式组,其解集为 .所以 .
15.14016.10
三、解答题
17.解:方案一:①需要测量的数据有: 点到 , 点的俯角 ; 点到 , 的俯角 ; 的距离 (如图所示).
②第一步:计算 .由正弦定理 ;
第二步:计算 .由正弦定理 ;
第三步:计算 .由余弦定理 .
方案二:①需要测量的数据有:
点到 点的俯角 ; 点到 , 的俯角 ; 的距离 (如图所示).
②第一步:计算 .由正弦定理 ;
第二步:计算 .由正弦定理 ;
第三步:计算 .由余弦定理 .
18.解:(Ⅰ)甲、乙被抽到的概率均为 ,且事件“甲工人被抽到”与事件“乙工人被抽到”相互独立,故甲、乙两工人都被抽到的概率为 .
(Ⅱ)(ⅰ)由题意知 类工人中ຫໍສະໝຸດ 抽查25名, 类工人中应抽查75名.
故 ,得 , ,得 .
(Ⅱ)
.
由条件得 ,即 ,
故 .从而 .
因为 ,
所以 .
将右边展开,与左边比较系数得, .
故 .
又 ,即 .
由此可得 .
于是 .
22.解:(Ⅰ)在 中,因为 ,
所以 .
因为 是角平分线,
所以 ,故 .
于是 .
因为 ,
所以 四点共圆.
(Ⅱ)连结 ,则 为 的平分线,得 .
09宁夏理综答案
2009年普通高等学校招生全国统一考试(宁夏卷)理科综合能力测试参考答案第Ⅰ卷一、选择题:本大题共13小题,每小题6分,共78分)1. B2. B3. D4. B5.C6. B7. A8. B9. C 10. D11. D 12. D 13. B二、选择题:本题共8小题,每小题6分,个哦个48分。
全部选对的给6分,部分选对的给3分,有选错的给0分。
14.BD 15. B 16. A 17. BD 18. D 19. C 20. BC 21. AC第Ⅱ卷22. (4分)2.25 6.86023. (11分)(1)电路原理如图所示。
(4分)(2)①20 (2分) 160~520(2分)②把触点从弹簧片右侧移到弹簧片左侧,保证当电磁铁吸合铁片时,3、4之间接通:不吸合时,3、4之间断开。
③电磁起重机24. (14分)设冰壶在未被毛刷擦过的冰面上滑行的距离为1S ,所受摩擦力的大小为1f :在 被毛刷擦过的冰面上滑行的距离为2S ,所受摩擦力的大小为2f 。
则有1S +2S =S ①式中S 为投掷线到圆心O 的距离。
11f mg μ= ②22f mg μ= ③设冰壶的初速度为0v ,由功能关系,得21122012f S f S mv ⋅+⋅= ④ 联立以上各式,解得21021222()gS v S g μμμ-=- ⑤代入数据得210S m = ⑥25.(18分)(1)带电粒子在电场中做类平抛运动,在y 轴负方向上做初速度为零的匀加速运动,设加速度的大小为a ;在x 轴正方向上做匀速直线运动,设速度为0v ,粒子从P 点运动到Q 点所用的时间为1t ,进入磁场时速度方向与x 轴正方向的夹角为θ,则qE a m= ①1t =② 001x v t = ③其中00,x y l ==。
又有10tan at v θ= ④ 联立②③④式,得30θ=︒因为M O Q 、、点在圆周上,=90MOQ ∠︒,所以MQ 为直径。
年高考理科综合宁夏卷含答案
B. 17%
C. 25%
D.33%
二、选择题:本题共8小题,每小题6分,在每小题给出的四个选项中,有的只有一 个选项正确,有的有多个选项正确,全部选对的得6分,选对但不全的得3分,有 选错的得0分。 14.
在力学理论建立的过程中,有许多伟大的科学家做出了贡献。关于科学家和 他们的贡献,下列说法正确的是 A. 伽利略发现了行星运动的规律 B. 卡文迪许通过实验测出了引力常量 C.牛顿最早指出力不是维持物体运动的原因 D.笛卡尔对牛顿第一定律的建立做出了贡献
3、请按照题号在各题的答题区域(黑色线框)内作答,超出答题区域书写的答案无效。
4.保持卡面清洁,不折叠,不破损。
5.做选考题时,考生按照题目要求作答,并用2B铅笔在答题卡上把所选题目 对应的题号涂黑。
可能用到的相对原子质量:H1 C12 N14 O16 N23 CL35.5 CU63.6
第I卷
一、选择题:本题共13小题,每小题6分,在每小题给出的4个选项中,只有一项是 符合题目要求的。 1. 下列关于动物细胞编程性死亡的叙述,正确的是 A.细胞癌变属于细胞编程性死亡 B. 细胞编程性死亡属于正常生理过程 C.细胞编程性死亡属于细胞分化过程 D.细胞编程性死亡与基因表达无关 2. 右图表示酶活性与温度的关系。下列叙述正确的是 A.当反应温度由t2调到最适温度时,酶活性下降 B.当反应温度由t2调到最适温度时,酶活性上升 C.酶活性在t2时比t1高,故t2时更适合酶的保存 D.酶活性在t1时比t2低,表明t1时酶的空间结构破坏更严重 温度/℃
12.能正确表示下列反应的例子方程式是 A. 向次氯酸钙溶液通入过量 CO2 :
Ca 2 2ClO H 2O CO2 CaCO3 2HClO
B. 向次氯酸钙溶液通入 SO2 : Ca 2 2ClO H 2O SO 2 CaSO3 2HClO
2009年普通高等学校招生全国统一考试理科数学(全国卷Ⅰ)(含答案解析)
2009年普通高等学校招生全国统一考试理科数学(全国卷Ⅰ)学校:___________姓名:___________班级:___________考号:___________则集合二、填空题三、解答题(I)证明:M是侧棱SC的中点;22.设函数()3233f x x bx cx =++在两个极值点(Ⅰ)求b c 、满足的约束条件,并在下面的坐标平面内,画出满足这些条件的点区域;参考答案:设三棱柱111ABC A B C -的侧棱与底面边长为分别在1Rt A AD 和1Rt A DB V 中,由勾股定理,可知211222A B BD A D =+=,在1A AB △中,由余弦定理,得11cos 2θ+=所以异面直线AB 与1CC 所成的角的余弦值为故选:D .8.A【分析】利用余弦函数的对称中心及给定条件列式,再经推理计算即可得解【详解】因函数y =3cos(2x +φ)的图象关于点于是得(2),6k k Z πϕπ=--∈,显然(k ϕ=而2k =时,6πϕ=-,||6πϕ=,当3k =时,所以|φ|的最小值为6π.故选:A 9.B【详解】设切点00(,)P x y ,则,又00010,12x a y x a ∴+=∴==-∴=,故答案选10.C11.D【详解】[方法一]:(1)f x +与(1)f x -都是奇函数,∴(1)(1)f x f x --=--,∴函数()f x 关于点2[1(1)]4T =--=的周期函数.(f x ∴--奇函数.故选D.[方法二]:(1)f x +与(1)f x -都是奇函数,∴(1)(1)f x f x --=--,由(1)f x ∴-+=由(1)(1)f x f x --=--,得()f x f =-进而可得()()4f x f x +=,可见(f 不成立,而D 成立的理由如下:(f【详解】设MN x =,则NC EB ==在RT MEB ∆中, MBE ∠在RT MNE ∆中由2ME NE =解得1x =,从而12MN SD =(Ⅱ)建系如图)得,又,,设分别是平面、的法向量,则且,即且分别令得,即,∴的大小.由已知有利用累差迭加即可求出数列的通项公式()知,=而,又是一个典型的错位相减法模型易得=)(())联立方程组与,可得,所以方程由两个不等式正根由此得到解得,所以r的范围为(Ⅱ)不妨设E与M的四个交点坐标分别为设直线AC,BD的方程分别为,解得点p的坐标为设t=,由t=及(1)可知由于四边形ABCD为等腰梯形,因而其面积将代入上式,并令,得求导数,令,解得当时,,当,;当时,当且仅当时,由最大值,即四边形ABCD的面积最大,故所求的点P的坐标为()22.(Ⅰ)(II )证明见解析.【详解】分析(I )这一问主要考查了二次函数根的分布及线性规划作可行域的能力.大部分考生有思路并能够得分.()2363f x x bx c =++'由题意知方程()0f x ¢=有两个根12x x 、1[10],x ∈-且,2[1,2].x ∈则有()10f '-≥,()00f '≤,()()1020f f ''≤≥,故有下图中阴影部分即是满足这些条件的点(),b c 的区域.(II)这一问考生不易得分,有一定的区分度.主要原因是含字母较多,不易找到突破口.此。
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2009年普通高等学校招生全国统一考试数学理试题(宁夏卷,含答案)第I 卷 一, 选择题:(本大题共12题,每小题5分,在每小题给出的四个选项中 ,中有一项是符合题目要求的。
(1) 已知集合}{{}1,3,5,7,9,0,3,6,9,12A B ==,则N A C B = (A) }{1,5,7 (B) }{3,5,7 (C) }{1,3,9 (D) }{1,2,3 (2) 复数32322323i ii i+--=-+ (A )0 (B )2 (C )-2i (D)2(3)对变量x, y 有观测数据理力争(1x ,1y )(i=1,2,…,10),得散点图1;对变量u ,v 有观测数据(1u ,1v )(i=1,2,…,10),得散点图2. 由这两个散点图可以判断。
(A )变量x 与y 正相关,u 与v 正相关 (B )变量x 与y 正相关,u 与v 负相关 (C )变量x 与y 负相关,u 与v 正相关 (D )变量x 与y 负相关,u 与v 负相关(4)双曲线24x -212y =1的焦点到渐近线的距离为(A )(B )2 (C (D )1 (5)有四个关于三角函数的命题:1p :∃x ∈R, 2sin 2x +2cos 2x =122p : ∃x 、y ∈R, sin(x-y)=sinx-siny3p : ∀x ∈[]0,π=sinx 4p : sinx=cosy ⇒x+y=2π其中假命题的是(A )1p ,4p (B )2p ,4p (3)1p ,3p (4)2p ,4p(6)设x,y 满足241,22x y x y z x y x y +≥⎧⎪-≥-=+⎨⎪-≤⎩则(A )有最小值2,最大值3 (B )有最小值2,无最大值 (C )有最大值3,无最小值 (D )既无最小值,也无最大值(7)等比数列{}n a 的前n 项和为n s ,且41a ,22a ,3a 成等差数列。
若1a =1,则4s = (A )7 (B )8 (3)15 (4)16(8) 如图,正方体1111ABCD A BC D -的棱线长为1,线段11B D 上有两个动点E ,F,且2EF =,则下列结论中错误的是 (A )AC BE ⊥ (B )//EF ABCD 平面(C )三棱锥A BEF -的体积为定值 (D )异面直线,AE BF 所成的角为定值 (9)已知O ,N ,P在ABC ∆所在平面内,且,0OA OB OC NA NB NC ==++=,且P A P B P B P∙=∙=∙,则点O ,N ,P 依次是ABC ∆的 (A )重心 外心 垂心 (B )重心 外心 内心(C )外心 重心 垂心 (D )外心 重心 内心(注:三角形的三条高线交于一点,此点为三角型的垂心)(10)如果执行右边的程序框图,输入2,0.5x h =-=,那么输出的各个数的合等于 (A )3 (B ) 3.5 (C ) 4 (D )4.5(11)一个棱锥的三视图如图,则该棱锥的全面积(单位:c 2m )为(A )(B )(C )(D )(12)用min{a,b,c}表示a,b,c 三个数中的最小值设f (x )=min{2x, x+2,10-x} (x ≥ 0),则f (x )的最大值为(A )4 (B )5 (C )6 (D )7第II 卷二、填空题;本大题共4小题,每小题5分。
(13)设已知抛物线C 的顶点在坐标原点,焦点为F(1,0),直线l 与抛物线C 相交于A ,B 两点。
若AB 的中点为(2,2),则直线ι的方程为_____________. (14)已知函数y=sin (ωx+ϕ)(ω>0, -π≤ϕ<π)的图像如图所示,则 ϕ=________________(15)7名志愿者中安排6人在周六、周日两天参加社区公益活动。
若每天安排3人,则不同的安排方案共有________________种(用数字作答)。
(16)等差数列{n a }前n 项和为n S 。
已知1m a -+1m a +-2m a =0,21m S -=38,则m=_______ 三、解答题:解答应写出说明文字,证明过程或演算步骤。
(17)(本小题满分12分)为了测量两山顶M ,N 间的距离,飞机沿水平方向在A ,B 两点进行测量,A ,B ,M ,N 在同一个铅垂平面内(如示意图),飞机能够测量的数据有俯角和A ,B 间的距离,请设计一个方案,包括:①指出需要测量的数据(用字母表示,并在图中标出);②用文字和公式写出计算M,N 间的距离的步骤。
(18)(本小题满分12分)某工厂有工人1000名,其中250名工人参加过短期培训(称为A类工人),另外750名工人参加过长期培训(称为B类工人),现用分层抽样方法(按A类、B类分二层)从该工厂的工人中共抽查100名工人,调查他们的生产能力(此处生产能力指一天加工的零件数)。
(I)求甲、乙两工人都被抽到的概率,其中甲为A类工人,乙为B类工人;(II)从A类工人中的抽查结果和从B类工人中的抽插结果分别如下表1和表2.表1:表2:(i)先确定x,y,再在答题纸上完成下列频率分布直方图。
就生产能力而言,A类工人中个体间的差异程度与B类工人中个体间的差异程度哪个更小?(不用计算,可通过观察直方图直接回答结论)(ii)分别估计A类工人和B类工人生产能力的平均数,并估计该工厂工人的生产能力的平均数,同一组中的数据用该组区间的中点值作代表)(19)(本小题满分12分)如图,四棱锥S-ABCD P为侧棱SD上的点。
(Ⅰ)求证:AC⊥SD;(Ⅱ)若SD⊥平面PAC,求二面角P-AC-D的大小(Ⅲ)在(Ⅱ)的条件下,侧棱SC上是否存在一点E,使得BE∥平面PAC。
若存在,求SE:EC的值;若不存在,试说明理由。
(20)(本小题满分12分)已知椭圆C的中心为直角坐标系xOy的原点,焦点在s轴上,它的一个顶点到两个焦点的距离分别是7和1.(Ⅰ)求椭圆C的方程;(Ⅱ)若P为椭圆C上的动点,M为过P且垂直于x轴的直线上的点,OPOM=λ,求点M的轨迹方程,并说明轨迹是什么曲线。
(21)(本小题满分12分)已知函数32()(3)x f x x x ax b e -=+++(I ) 如3a b ==-,求()f x 的单调区间;(II )若()f x 在(,),(2,)αβ-∞单调增加,在(,2),(,)αβ+∞单调减少,证明βα-<6.请考生在第(22)、(23)、(24)三题中任选一题作答,如果多做,则按所做的第一题记分。
作答时用2B 铅笔在答题卡上把所选题目对应的题号涂黑。
(22)本小题满分10分)选修4-1:几何证明选讲如图,已知ABC ∆的两条角平分线AD 和CE 相交于H ,060B ∠=,F 在AC 上, 且AE AF =。
(I ) 证明:B,D,H,E 四点共圆: (II ) 证明:CE 平分DEF ∠。
(23)(本小题满分10分)选修4—4:坐标系与参数方程。
已知曲线C 1:4cos ,3sin ,x t y t =-+⎧⎨=+⎩ (t 为参数), C 2:8cos ,3sin ,x y θθ=⎧⎨=⎩(θ为参数)。
(1)化C 1,C 2的方程为普通方程,并说明它们分别表示什么曲线; (2)若C 1上的点P 对应的参数为2t π=,Q 为C 2上的动点,求PQ 中点M 到直线 332,:2x t C y t =+⎧⎨=-+⎩(t 为参数)距离的最小值。
(24)(本小题满分10分)选修4-5:不等式选讲如图,O 为数轴的原点,A,B,M 为数轴上三点,C 为线段OM 上的动点,设x 表示C 与原点的距离,y 表示C 到A 距离4倍与C 道B 距离的6倍的和. (1)将y 表示成x 的函数;(2)要使y 的值不超过70,x 应该在什么范围内取值?2009年普通高校招生全国统一考试理数数学试题参考答案一. 选择题(1) A (2) D (3) C (4) A (5) A (6) B (7) C (8) D (9) C (10) B (11) A (12) C二.填空题(13) y x = (14)910π (15) 140 (16) 10 三.解答题(17) 解:方案一:①需要测量的数据有:A 点到M ,N 点的俯角11,αβ;B 点到M , N 的俯角22,αβ;A ,B 的距离 d (如图) 所示) . ……….3分②第一步:计算AM . 由正弦定理212sin sin()d AM ααα=+ ;第二步:计算AN . 由正弦定理221sin sin()d AN βββ=- ;第三步:计算MN.由余弦定理MN = .方案二:①需要测量的数据有:A 点到M ,N 点的俯角1α,1β;B 点到M ,N 点的府角2α,2β;A ,B 的距离 d (如图所示).②第一步:计算BM . 由正弦定理112sin sin()d BM ααα=+ ;第二步:计算BN . 由正弦定理121sin sin()d BN βββ=- ;第三步:计算MN .由余弦定理MN =(18) 解:(Ⅰ)甲、乙被抽到的概率均为110,且事件“甲工人被抽到”与事件“乙工人被抽到”相互独立,故甲、乙两工人都被抽到的概率为1111010100p =⨯= . (Ⅱ)(i )由题意知A 类工人中应抽查25名,B 类工人中应抽查75名. 故 48525x +++=,得5x =, 6361875y +++=,得15y = . 频率分布直方图如下从直方图可以判断:B 类工人中个体间的关异程度更小 .(ii ) 485531051151251351451232525252525A x =⨯+⨯+⨯+⨯+⨯= , 6153618115125135145133.875757575B x =⨯+⨯+⨯+⨯= , 2575123133.8131.1100100x =⨯+⨯= A 类工人生产能力的平均数,B 类工人生产能力的平均数以及全工厂工人生产能力的平均数的会计值分别为123,133.8和131.1 .(19)解法一:(Ⅰ)连BD ,设AC 交BD 于O ,由题意SO AC ⊥。
在正方形ABCD 中,AC BD ⊥,所以AC SBD ⊥平面,得AC SD ⊥.(Ⅱ)设正方形边长a ,则SD =。
又OD =,所以060SOD ∠=, 连OP ,由(Ⅰ)知AC SBD ⊥平面,所以AC OP ⊥, 且AC OD ⊥,所以POD ∠是二面角P AC D --的平面角。
由SD PAC ⊥平面,知SD OP ⊥,所以030POD ∠=, 即二面角P AC D --的大小为030。
(Ⅲ)在棱SC 上存在一点E ,使//BE PAC 平面由(Ⅱ)可得4PD =,故可在SP 上取一点N ,使PN PD =,过N 作PC 的平行线与SC 的交点即为E 。