2013年黄高预录模拟试题二

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黄高预录数学模拟试题(二)

黄高预录数学模拟试题(二)

黄高预录数学模拟试题(二)一、选择题(5′×5=25′)1、若x =) A 、12 B 、1C、2D2、已知在△ABC 中,∠A >∠B >∠C ,且∠A 的度数是∠C 的度数的5倍,那么∠B 的取值范围是( )A 、180900711<B <°°B 、360900711<B <°°C 、1801080711<B <°°D 、3601080711<B <°°3、如图,直线1234l l l l ,相邻两条平行线间的距离都等于h ,若正方形ABCD 的四个顶点分别在四条直线上,则它的面积等于( ) A 、24h B 、25h C、2D、24、已知实数a 、b 分别满足424230a a --=和4230b b +-=,则代数式4444a b a +的值等于( ) A 、175 B 、55C 、13D 、75、已知A (11,3a )、B (11,4b )、C (11,5c)满足13a b c =+、 12b a c =+,则A 、B 、C 三点的位置适合( ) A 、在同一直线上 B 、组成锐角三角形 C 、组成直角三角形D 、组成钝角三角形二、填空题(5′×5=25′)6、若关于x 的的不等式组x x ⎧⎨⎩≥+2<3-2a a 有解,则函数21(3)4y a x x =---的图象与x 轴的交点个数为________________.7、如图,已知∠BAD=∠DAC= 9°,A D ⊥DE,且AB+AC=BE ,则∠B= .8、若反比例函数ky x=的图象与一次函数y ax b =+的图象交于点A (-2,m ), B (5,n ),则3a b +的值为 .9、已知△ABC 的三边长分别为AB=13,BC=5,CA=12,CT 是∠ACB 的内角平分线,△ABC 关于直线CT 的对称图形是△A 1B 1C 1,△ABC 和△A 1B 1C 1的公共部分的面积是mn,,m n 是互质的正整数,则m n += .10、不等式226x x a +-≥对于一切实数x 都成立,则实数a 的最大值为 .三、解答题(10′+15′×4=70′)11、如图,在△ABC 中,AC=7,BC=4,D 为AB 的中点,E 为AC 边上的一点,且∠AED=1902+゜∠C ,求CE 的长. (10′)ACDBEl 1 l 2l 3412、已知t 是一元二次方程210x x --=的一个根,对任意有理数a ,有理数b 、c 满足(1)()1at bt c ++=.(15′)⑴求b 和c (用含a 的代数式表示)⑵是否存在这样的有理数a ,使得b 或c 中至少有一个等于12008?若存在,求出这样的a 值;若不存在,说明理由.13、如图,△ABC 内接于⊙O ,AB=AC ,过C 作CD//AB 交⊙O 于点D ,过D 作DE ⊥AB 于E ,且CD=DE. (15′) ⑴求证:AD 2 =2AE ·AB⑵若△ABC 的面积为50,求△ACD 的面积AD14、设二次函数2(y ax bx c a =++>0,b >0 )的图象经过12(0,),(1,)y y 和3(1,)y -三点,且满足2221231y y y ===.(15′) ⑴求这个二次函数的解析式;⑵设这个二次函数的图象与x 轴的两个交点为A 1(,0)x ,B 2(,0)x ,12x x <,C 为顶点,连接AC 、BC ,动点P 从A 点出发沿折线ACB 运动,求△APB 面积的最大值. ⑶当点P 在折线ACB 上运动时,是否存在点P ,使△APB 的外接圆的圆心在x 轴上?请说明理由.15、观察按下列规律排成一列数:(15′)11,12,21,13,22,31,14,23,32,41,15,24,33,42,51,16,…(※) ⑴在(※)中,从左起第m 个数记为F (m ),当F (m )=22001时,求m 的值和这m个数的积.⑵在(※)中,未经约分且分母为2 的数记为c ,它后面的数记为d ,是否存在这样的两个数c 和d ,使c d =2001000,如果存在,求出c 和d ;如果不存在,请说明理由.。

2013高考模拟题(二)共19页word资料

2013高考模拟题(二)共19页word资料

2013高考模拟题(二)一、单项填空(共15小题,每小题1分,满分15分) 1. ―Why do you suggest visit to Yangzhou?―I believe beauty of nature there will give you much impression.A. a; the; aB. a; the; /C. /; a; theD. the; /; the2. to go out alone by the doctor, the old man had to go fora walk with his son following him.A. Warning notB. Not warningC. Not warnedD. Warned not3. It was in the building was built as a school by the villagers he finished his primary school.A. that; whichB. which; whichC. which; thatD. where; that4. ―Can I help you?―Id like to buy a present for my fathers birthday, at a proper price but of good use.A. itB. thatC. whichD. one5. Great changes have taken place in our school. It is no longer it was 30 years, it was so poorly equipped.A. what; thatB. what; whenC. what; whichD. when; what6. a fine day, rather than at home, I preferred .A. It being; stay; to travelB. Being; to stay; to travelC. Having been; stay; travelD. It was; to say; to travel7. His health under the pressure of work and had to stay fora month.A. broke up; in the hospitalB. broke up; in hospitalC. broke down, in the hospitalD. broke down; in hospital8. blood if you can and many lives will be saved.A. GivingB. GivenC. GiveD. To give9. ―How did you find your visit to the exhibition, Tom?A. By taxiB. Oh, wonderful, indeedC. I went there with my close friendsD. An old man showed me the way10. A person of great usually can achieve his goals.A. instructionB. informationC. reputationD. determination11. They have finished the work; otherwise, they would not be enjoying themselves by the seaside.A. shouldB. couldntC. mustD. cant12. Many students have formed the habit of reading but notes meanwhile.A. not takeB. not to takeC. not takingD. not taken13. The joke told by Tom made us , so our teacher couldnt make himself .A. laugh; hearingB. laugh; heardC. laughing; hearD. laughed; to be heard14. With high taxes and his small income, Henry had great difficulty in both ends meet.A. havingB. lettingC. makingD. getting15. ―Im going to Shanghai next week. Do you have anything to your son there?―No, but thank you all the same.A. to takeB. to be takenC. takingD. taken二、完形填空(共20小题;每小题1分,满分20分)Parents often believe that they have a good relationship with their teenagers. But last summer, Joanna and Henry noticed a change in their son: suddenly he seemed to 16 far more to his friends than to his parents. “The door 17 his room is always shut.” Joanna noted.Tina and Mark noticed 18 changes in their 19 daughter. “She used to cuddle up (蜷伏) with me on the sofa and talk,” said Mark. “Now we joke that s he does this 20 she wants something. Sometimes she wants to be 21 like a little girl and sometimes like a young lady. The problem is 22 which time is which.”Before age 11, children like to tell their parents whats on their 23. “In fact, parents are fir st 24 on the list.” said Michael Riera,25 of Uncommon Sense for Parents with Teenagers. “This completely changes during the teen years.” Riera explained. “They talk to their friends 26, then maybe their teachers, and their parents last.”Parents who know whats going on in their 27 lives are in the best position to help them. 28 the wall of silence, parents should 29 chances to understand what their children want to say, and tryto find 30 to talk and write to them. And they 31 give their children a mental break, for children also need freedom, 32 young. 33 thing parents should remember is that to be a friend, not a manager,34 their children is a 35way to know them.16. A. talkB. talksC. talkedD. be talking17. A. inB. forC. toD. with18. A. similarB. sameC. differentD. familiar19. A. 14yearsoldB. 14yearoldC. 14yearoldsD. 14 year old20. A. only thatB. only whenC. that onlyD. when only21. A. regardedB. thought ofC. looked uponD. treated22. A. figuring outB. figuring inC. figuring onD. figuring off23. A. brainB. headC. mindsD. spirit24. A. in the listB. on the listC. off the listD. over the list25. A. a authorB. an authorC. the authorD. author26. A. firstB. secondC. nextD. last27. A. teenagersB. teenagerC. teenagersD. teenagers28. A. Break downB. Breaking downC. To break downD. Broken down29. A. haveB. getC. createD. take30. A. thoughtB. waysC. meansD. ideas31. A. mustB. can C. mayD. might32. A. butB. thoughC. asD. still33. A. OneB. The otherC. OthersD. Another34. A. withB. toC. ofD. on35. A. goodB. betterC. bestD. fine三、阅读理解(共15小题,每题2分,满分30分)AWhile others look away from trouble, this lady digs in and gets to work. Gretchen Buchenholz, the native New Yorker and mother of six, has worked on behalf of needy and marginalized families for years in the city. She does everything she can for children. In 1974 she founded Merricats Castle, a nursery school that opened its doors to kids of all racial and economic backgrounds, the ablebodied as well as those with disabilities or terminal illnesses.She founded the Association to Benefit Children (ABC), the nonprofit group, some 20 years ago. The story of how she started ABC is pretty amazing. In 1984 she was on her way to a government office to get a daycare permit when, by accident, she entered a room where homeless families were waiting to be placed in a“ welfare hotel.” She saw three bare cribs (婴儿床) with babies lying in them. The children wore no diapers (their parents couldnt afford them), and the room was filthy (不整洁). After talking to the parents and learning that they and their children were hungry,Gretchen marched out and bought bread, peanut butter, apple juice and diapers. Then she started making phone calls. She dialed the American Red Cross, City Hall and The New York Times.Gretchen has made many people see that we need to recognize these children are not different from our own, and we need to join inand help. Too often, people look away from suffering. But she setsus an example that we should gain strength to do something about it.36. She went to the government office .A. to help those homeless people in the roomB. to apply for a permit for ABCC. to call on the government to help those homeless childrenD. to get permission to look after babies during the day37. By “But she sets us an example that we should gain strengthto do something about it.”, the author means .A. Gretchen Buchenholz is a respectable womanB. we should set up such organizations as the ABC to help those poor childrenC. Gretchen Buchenholz gives us the strength to face sufferingin lifeD. we should do our bits to help those poor children38. We can infer from the passage that Gretchen Buchenholz .A. called up City Hall to get help for those homeless peopleB. moved to New York at a young ageC. treats the children equally whether they are normal or disabledD. starts schools for those homeless childrenBIf you want to be taken seriously in the business world, you must understand how to write a proper letter. Dont use big words:use everyday language. The word “per” is often used in business communication. Its not a real word! Dont use it. Use short words,and short paragraphs. Space your paragraphs evenly and cleanly for a more professional look. The average paper can hold 66 sentences:use this guide as you format your letter, so that the bulk (大部分) of the words are nicely centered. Think about when your letter is going to reach its recipient. You dont want your letter to get lost in the endofthe month bills. A letter that arrives on Monday is less likely to be read carefully than one that arrives on Tuesday.A good tip:include the word “you” or “your” as one of the first three opening words. Why? It draws the readers attention to the letter! The only thing better than this is opening with a referral (提及) to a person you know,as in “Mr. Smith suggested that I write to you.” Readers also love stories―particularly humor―and anything in quotes. Quotation marks catch the eye, and make the letter look more inviting. Sign your letter legibly, so that your name can be read clearly.39. Which of the following is NOT true according to the passage?A. Big words should not appear in a business letter.B. The word “per” should be used in a business letter.C. A letter had better arrive on Tuesday than on Monday.D. Stories or humors can be used to attract readers.40. A better tip on starting a business letter is .A. to start the letter with the word such as “you” or “your”B. to start the letter in a courteous mannerC. to start the letter with stories or humorsD. to start the letter with a referral to a person you know41. The underlined word “legibly” means .A. properlyB. CleanlyC. readablyD. Evenly42. Whats the main idea of the passage?A. How to write a proper business letter.B. How to use everyday language in a letter.C. How to space paragraphs evenly and cleanly in a letter.D. How to use short words and short sentences in a letter.CCalifornia State Railroad Museum HoursThe museum is open from 10 a.m. to 5 p.m. daily (except on Thanksgiving, Christmas and New Years Day)Admission$4 adults; $2 students; children aged 5 and under are free.ParkingA small number of metered parking space are available on the streets of Old Sacramento. However, these spaces are not suitable for guests visiting longer than 90 minutes. All day parking is available in larger public garages at both ends of Old Sacramento.Food ServiceThe Silver Palace Restaurant in the Central Pacific Railroad Passenger Station serves good food at reasonable prices. It is just one block southwest of the main entrance to the Museum. There are many other restaurants throughout Old Sacramento.Accessibility (无障碍通行)The California State Railroad Museum is fully accessible to the disabled. Wherever possible, wheelchair lifts are provided. Certain exhibits and programs do have limited accessibility because of the narrow stair ways or door openings on some railroad passenger cars.Other offeringsGuided hours and films about the Museum are offered daily. There are many other chances at the Museum, too,including related attractions within Old Sacramento State Historic Park.43. Which of the following is True about the Museum?A. Children may visit the Museum any day of the year.B. Films about the Museum are shown on weekends.C. A student is admitted at half the regular price.D. The disable are admitted free of charge.44. A visitor is advised to park his car if he wants to spend several hours at the museum.A. in a garage provided by the Museum.B. on a parking space near the Museum.C. on a metered parking space on the street.D. in a public garage at one end of Old Sacramento.45. A visitor can enjoy a good but not too expensive meal at .A. the Silver Palace RestaurantB. any restaurant in old SacramentoC. Old Sacramento State Historic ParkD. the California State Railroad MuseumDDrunken driving has become a national headache. Every hour of every day about three Americans on average are killed by drunken drivers, adding up to an incredible 250,000 over the past ten years.A drunken driver is usually defined as one with a 0.10 blood alcohol drinking roughly three beers, glasses of wine or shots of whisky drunk within two hours. Heavy drinking used to be an acceptable part of the American manly image and judges were mercifulin most courts, but the drunken accidents has recently caused so many wellpublicized tragedies, especially involving young children, that public opinion is no longer so tolerant. Twenty states have raised the legal drinking age to 21, reversing a trend in the 1960s to reduce it to 18. After New Jersey lowered it to 18, the number of people killed by 1820yearold drivers more than doubled, so the state recently upped it back to 21.Reformers, however, fear raising the drinking age will have little effect unless accompanied by educational programmes to help young people to develop responsible attitudes about drinking and teach them to resist peer pressure to drink.Tough new laws have led to increased arrests and tests and in many areas already, to a marked decline in death. Some states are also publishing bars for serving customers too many drinks. A bar in Massachusetts was fined for serving six or more double brandies to a customer wh o was “obviously drunken” and later drove off the road, killing a nineyearold boy.As the death continues to occur daily in every state, some Americans are even beginning to speak well of the national ban on alcohol that began in 1919, which President Hoover called the “noble experiment”. They forget that legal ban didnt stop drinking, but encouraged political corruption and organized crime.As with the booming drug trade generally, there is no easy solution.46. Drunken driving has become a major problem in America because .A. most Americans are heavy drinkersB. Americans are now less shocked by road accidentsC. accidents attract so much publicityD. drinking is a socially accepted habit in America47. Why has public opinion regarding drunken driving changed?A. Detailed statistics are now available.B. The news media have given special attention to the problem.C. Judges are giving more severe sentences.D. Drivers are more conscious of their image.48. Laws recently introduced in some states have .A. reduced the number of bar customersB. resulted in fewer serious accidentsC. prevented bars from serving drunken customersD. specified the amount drivers can drink49. Now some Americans are beginning to the ban on alcohol by President Hoover in 1913.A. think highly ofB. criticizeC. speak evil ofD. think lowly of50. Why is the problem of drinking and driving difficult tosolve?A. Alcohol is easily obtained.B. Drinking is linked to organized crime.C. Legal ban has already failed.D. Laws and rules alone are not enough. 四、任务型阅读(共10小题,每小题1分,满分10分)请认真阅读下列短文,并根据所读内容在文章后表格中的空格处填入一个最恰当的单词。

2013黄高预录训练题

2013黄高预录训练题

2013届黄高预录针对训练题 一、选择题1.已知正方形ABCD 的边长为1,E 为BC 边的延长线上一点,CE =1,连接AE ,与CD 交于点F ,连接BF 并延长与线段DE 交于点G ,则BG 的长为 ( )A .3 B .3 C .3 D .32.已知实数,a b 满足221a b +=,则44a ab b ++的最小值为 ( )A .18-.B .0.C .1.D .98.3.若方程22320x px p +--=的两个不相等的实数根12,x x 满足232311224()x x x x +=-+,则实数p 的所有可能的值之和为 ( )A .0.B .34-.C .1-.D .54-.4.由1,2,3,4这四个数字组成四位数abcd (数字可重复使用),要求满足a c b d +=+.这样的四位数共有 ( )A .36个.B .40个.C .44个.D .48个. .5、已知△ABC 为锐角三角形,⊙O 经过点B ,C ,且与边AB ,AC 分别相交于点D ,E . 若⊙O 的半径与△ADE 的外接圆的半径相等,则⊙O 一定经过△ABC 的( ).(A )内心 (B )外心 (C )重心 (D )垂心 6、黑板上写有共100个数字.每次操作先从黑板上的数中选取2个数,然后删去,并在黑板上写上数,则经过99次操作后,黑板上剩下的数是( ).(A )2012 (B )101 (C )100 (D )997、在平面直角坐标系中,满足不等式x 2+y 2≤2x +2y 的整数点坐标(x ,y )的个数为( ).(A )10 (B )9 (C )7 (D )58、设方程组x 3-xyz=-5, y 3-xyz=2, z 3-xyz=21 的正实数解有( ) A 、1组 B 、2组 C 、3组 D 、4组 二、填空题:(本题满分28分,每小题7分) 9.在△ABC 中,已知AB =AC ,∠A =40°,P 为AB 上一点,∠ACP =20°,则BCAP= . 10、已知实数,,a b c满足1abc =-,4a b c ++=,22243131319a b c a a b b c c ++=------,则222a b c ++= . 11、如图,四边形ABCD 内接于⊙O ,AB 是直径,AD = DC . 分别延长BA ,CD ,交点为E . 作BF ⊥EC ,并与EC 的延长线交于点F . 若AE = AO ,BC = 6,则CF 的长为 .12、甲按照一定顺序排列的数列,一般用a 1,a 2,a 3,…,an 表示一个数列,可简记为{an},现有一数列{an}满足关系式:211n n n a a na +=-+(n=1,2,3,…,n),且a 1=2,试猜想an= (用含n 的代数式表示),13.如图,在△ABC 中AB=AC=5,BC=2,在BC 上有50个不同的点P 1,P 2,…,P 50,过这50个点分别作△ABC 的内接矩形P 1E 1F 1G 1,P 2E 2F 2G 2,……,P 50E 50F 50G 50,每个内接矩形的周长分别为L 1,L 2,…,L 50,则L 1+L 2+…+L 50= 。

黄高预录训练题(语文)

黄高预录训练题(语文)

2013年黄冈中学理科实验班招生考试语文模拟试题(四) (满分:75分时间:50分钟)一、(每小题3分,共18分) 1.下列各组词语中加点的字,注音全都正确的一组是()A.发酵(jiào)档期(dàng)单枪匹马(pí)妄自菲薄(fěi)B.胡诌(zh ōu)角色(jiǎo)犯而不校(jiào)严惩不贷(chéng)C.干坼(chè)谥号(shì)刚愎自用(bì)热泪盈眶(kuàng)D.晕船(yùn)闷热(mēn)爱憎分明(zēng)解甲归田(xiè)2.下列各组词语中,没有错别字的一组是()A.宣泄百叶窗谈笑风声左右逢源B.精典挖墙脚集思广益食不果腹C.副刊下马威额手称庆人才倍出D.松弛摄像机利令智昏中流砥柱3.下列各句中,加下划线的词语使用不恰当的一句是()A.那小而发亮的眼睛,在刹那间把他溢于言表的得意,把他结记前怨的刻薄,都表露得明白无遗了。

B.建设环境友好型社会不单是政府的事情,环保与人类生活息息相关,善待大自然是每一个地球人的义务和责任。

C.20世纪80年代,《霍元甲》在中央电视台黄金时间播出时,家家户户都围在电视前观看,那万人空巷的情景至今让人们记忆犹新。

D.一个知恩图报的人,常常给人们留下良好的印象;而一个不懂得感恩的人,往往为世人所不齿。

4.下列各项中,没有语病的一项是()A.面对日新月异的社会舞台,大学生唯有积极变迁、直面变迁、和谐变迁,才能成为时代先锋。

B.目前,国家发改委正在研究天然气价格及天然气利用,将有计划地提高天然气的价格,加快与国际接轨的步伐。

C.不管在哪个国家,没有法律就没有真正的自由。

一个国家制定法律的目的不是废除和限制人民的自由,而是为了保护和扩大人民的自由。

D.近年来,部分国家非法进入南海中国管辖海域内从事捕渔活动的渔船数量呈明显上升趋势,中国渔政部门计划通过护航护渔等一系列行动来进一步宣示中国对南海诸岛的主权。

2013年重点高中预录物理模拟试题

2013年重点高中预录物理模拟试题

2013年黄冈中学提前招生物理模拟试题(总分:80分 考试时间:90分钟)一、单项选择题( 第3、15、16每小题4分,其他每小题2分,共38分 )1. 在亚丁湾海域,我国海军护航编队使用“金噪子”(又名“声波炮”)震慑海盗,它的声波定向发射器外观类似喇叭,能发出145dB 以上的高频声波,甚至比喷气式飞机引擎的噪声还要刺耳,根据以上信息,下列说法中错误的是( )A .声波具有能量B .声波定向发射器喇叭状外观可以减少声音的分散,从而增大响度C .使用“金嗓子”时,护航官兵佩戴耳罩是在人耳处减弱噪声D .“金噪子”发出的声波是次声波2. 缺水地区的冬季,当地有些居民靠取冰雪来获得生活用水。

如图1,是将一定质量的冰雪,从-20℃加热到沸腾过程,温度随时间变化的图像(不考虑水中有杂质产生的影响),下列对图像分析正确的是 ( ) A .冰的熔点是0℃,水的沸点是100℃ B .当地气压高于标准大气压C .冰熔化和水沸腾过程中都吸热且温度不变D .图像中的BC 段,物质只是以液态方式存在图23.如图2所示,一个半径为5m 的圆形蓄水池装满水,水面和地面相平,在池中心正上方离水面3m 高处吊着一盏灯,一个人站在岸边,他的眼睛距地面的高度为1.8m ,则他要看到灯在水中所成的像,人到岸的距离不能超过( )A .1mB .2mC .3mD .4m 4.小宇在透明的玻璃板上用黑色笔画了个手表盘,如图3甲所示。

把这个玻璃板放在透镜的左侧位置,并用平行光源对着玻璃板上的表盘照射,如图乙所示,移动光屏直到在屏上成清晰像为止,此时表盘在光屏上所成的像是图丙中的( )图3A B甲乙丙 光源C D铜片泡沫塑料线圈LED灯带电源适配器5.如图4所示是电阻甲和乙的U-I图象,下列说法正确的是()A.甲的电阻值保持10Ω不变B.乙的电阻值保持20Ω不变C.甲、乙并联在电路中,当电源电压为2V时,电路总电流为0.3AD.甲、乙串联在电路中,当电路电流为0.2A时,甲的功率为0.6W图4 图5 图66.小金设计了一个如图5所示的线圈指南针,将它放入盛有食盐水的水槽中(铜片和锌片分别与线圈两端相连后放入食盐水构成了化学电池,铜片为正极,锌片为负极),浮在液面上的线圈就能指示方向了。

湖北省黄石二中2013届高三高考压轴模拟理科综合试题.pdf

湖北省黄石二中2013届高三高考压轴模拟理科综合试题.pdf

A.图甲表明水稻根的背光生长和单侧光照射有关
B.图甲表明水稻根具有背光性,背光弯曲的角度α一定随光照强度的增加而增大
C.图乙所示字母C点表示的是茎的近地侧
D.图甲、图乙所示实验结果均显示了生长素对根、茎的生长作用具有两重性
5.“桑基鱼塘”生态系统能充分利用废弃物中的能量,形成“无废弃物农业”,这主要是遵循生态工程的
2.答第Ⅰ卷时,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,用橡皮擦擦干净
后,再选涂其他答案标号。答第Ⅱ卷时,必须使用0.5毫米的黑色墨水签字笔在答题卡上书写,要求字体工整、笔迹清
晰。作图题可先用铅笔在答题卡规定的位置绘出,确认后再用0.5毫米的黑色墨水签字笔描清楚。必须在题号所指示的
理科综合测试题
本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,第Ⅰ卷第1页至第6页,第Ⅱ卷第7页至第18页。全卷满
分300分。考试时间150分钟。
★祝考试顺利★
注意事项:
1.答题前,考生务必将自己的准考证号、姓名填写在答题卡上。考生要认真核对答题卡上所粘贴的条形码中“准
考证号、姓名、考试科目”与考生本人准考证号、姓名是否一致。
完成后,刻度C表示的电阻值为
Ω,刻度B表示的电阻值为
Ω.
24.(14分)冬季有一种雪上“俯式冰撬”滑溜运动,运动员从起跑线推着冰撬加速一段相同距离,再跳上冰撬自
由滑行,滑行距离最远者获胜,运动过程可简化为如图所示的模型,某一质量m=20kg的冰撬静止在水平雪面上的A处
,现有质量M=60kg的运动员,用与水平成角的恒力F=200N斜向下推动冰撬,使其沿AP方向一起做直线运动,当冰撬到达
间通过信息交流,保证细胞间功能的协调。关于细胞间信息交流的说法错误的是

黄冈中学2013届高三第二次模拟考试英语试卷

黄冈中学2013届高三第二次模拟考试英语试卷

湖北省黄冈中学2013届五月第二次模拟考试英语试卷命题人:李文宏瞿平审校:李文宏瞿平本试卷共四部分。

满分150分。

考试时间120分钟。

第一部分:听力(共两节,满分30分)做题时,先将答案划在试卷上。

录音结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。

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. How is the man going home?A. By car.B. By bus.C. On foot.2. What do we know about the new T-shirts?A. They have no school signs.B. They have reasonable prices.C. They have some disadvantages.3. What did the man think of the exam?A. It was beyond him.B. It was very easy.C. It was a bit difficult.4. What will the man do?A. Lend his book to the woman.B. Pay for the woman's book.C. Borrow money from the woman.5. What did the man do?A. He gave the woman the wrong information.B. He put the sugar in the black container.C. He added salt to his coffee.第二节听下面5段对话,每段对话后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标出试卷的相应位置。

2013年湖北省黄冈中学中考第二次模拟考试数学试题

2013年湖北省黄冈中学中考第二次模拟考试数学试题

黄冈中学2013届初三年级第二次模拟考试数学试题一、选择题(本大题共8小题,每小题3分,共24分、在每小题给出的四个选顶中,只有一项是符合题目要求的)1、-32的绝对值是()A.32B.-32C.D.2、据法新社3月20日报道,全球管理咨询公司麦肯锡预计中国网络销售额将达到4200亿美元(约合2.6万亿人民币),中国将因此成为世界最大的网络零售市场,其中数据4200亿用科学记数法表示错误的是()A.4.2×103亿B.4.2×1011C.0.42×104亿D.4.2×107万3、如图,直线AB、CD相交于点O,OE平分∠BOD,若∠COE=160°,则∠AOC等于()A.20°B.40°C.60°D.80°4、下列计算正确的是()A.(-p2q)3=-p5q3B.(12a2b3c)÷(6ab2)=2abC.(a5)2=a7D.a3a4=a75、某几何体的三视图如图,则该几何体是()A.球B.圆柱C.圆锥D.长方体6、一元二次方程x2+x=1的两根为x1,x2,则()A.x1+x2=1B.x1x2=1C.x1+x2=-1D.7、如图,⊙O是△ABC的外接圆,∠B=60°,OP⊥AC于点P,,则⊙O的半径为()A.B.C.8D.128、甲、乙两人准备在一段长为1200m的笔直公路上进行跑步,甲、乙跑步的速度分别为4m/s和6m/s,起跑前乙在起点,甲在乙前面100m处,若同时起跑,则两人从起跑至其中一人先到达终点的过程中,甲、乙两人之间的距离y(m)与时间t(s)的函数图象是()二、填空题(每小题3分,共21分)9、化简的结果是__________.10、分解因式4x2-8x+4=__________.11、如图,将含30°角的直角三角尺ABC绕点B顺时针旋转150°后得到△EBD,连结CD,若AB=4cm,则△BCD的面积为__________cm2.12、“五一”期间,我市某街道办事处举行了“迎全运,促和谐”中青年篮球友谊赛.获得13、如图,A是反比例函数图象上一点,过点A作AB⊥y轴于点B,点P在x轴上,△ABP的面积为2,则k的值为__________.14、一个圆锥的母线长为4,侧面积为8π,则这个圆锥的底面圆的半径是__________.15、在平面直角坐标系中、若四条直线:l1:直线x=1;l2:过点(0,-1)且与x轴平行的直线;l3:过点(1,3)且与x轴平行的直线;l4:直线y=kx-3所围成的凸四边形的面积等于12,则k的值为__________.三、解答下列各题(本大题共75分)16、(本小题6分)解不等式组:17、(本小题6分)如图,△ABC与△BEF都是等边三角形,D是BC上一点,且CD=BE,求证:∠EDB=∠CHD.18、(本小题7分)2013年某市初中毕业生升学体育集中测试项目包括体能(耐力)类项目和速度(跳跃、力量、技能)类项目.体能类项目从游泳和中长跑中任选一项,速度类项目从立定跳远、50米跑等6项中任选一项.某校九年级共有200名女生在速度类项目中选择了立定跳远,现从这200名女生中随机抽取10名女生进行测试,下面是她们测试结果的条形图.(另附:九年级女生立定跳远的计分标准)九年级女生立定跳远计分标准(1)求这10名女生在本次测试中,立定跳远距离的极差,立定跳远得分的众数和平均数.(2)请你估计该校选择立定跳远的200名女生得满分的人数.19、(本小题6分)某班用抽签的方式,在甲、乙、丙、丁四位同学中挑选2位同学,代表该班参加学校卫生大检查,请用列表法或树状图法,求乙被选中的概率.20、(本小题7分)某学校后勤人员到一家文具店给九年级的同学购买考试用文具包,文具店规定一次购买400个以上,可享受8折优惠,若给九年级学生每人购买一个,不能享受8折优惠,需付款1936元;若多买88个,同样只需付款1936元,请问该学校九年级学生有多少人?21、(本小题8分)如图,已知等边△ABC,以边BC为直径的圆与AB、AC分别交于点D、点E.过点D作DF⊥AC,垂足为F.(1)判断DF与⊙O的位置关系,并证明你的结论;(2)过点F作FH⊥BC,垂足为H,若FH的长为4,求BC的长.22、(本小题8分)为了开发利用海洋资源,某勘测飞机欲测量一岛屿的两端A、B的距离,飞机在距海平面垂直高度为300米的C处测得端点A的俯角为60°,然后飞机沿着俯角30°的方向俯冲到D点,发现端点B的俯角为45°,而此时飞机距离海平面的垂直高度为100米,求岛屿两端A、B的距离.(结果精确到0.1米,)23、(本小题12分)某大学生创业团队新研发了一日常科技产品,决定在市场上进行试推销,已知团队试推销期间每天需固定支出各种费用(差旅费、人工费、托运费等)800元,该产品成本价为每个5元,经测算若按成本价5元/个进行推销时,每天可销售1440个,若每个每提高1元,每天就少销售120个,为便于测算,每个产品的售价x(元)只取整数,设该团队的日净收入为y元.(1)写出y与x的函数关系式,并指出x的取值范围;(2)团队若要使得日净收入最大,同时尽可能多的推销产品以扩大人气,则每个产品的售价应定为多少元?此时日净收入是多少?(3)若要求日净收入不低于3000元,则每个产品的售价应定在什么范围?24、(本小题15分)如图,点A在y轴上,点B在x轴上,以AB为边作正方形ABCD,P为正方形ABCD的对称中心,正方形ABCD的边长为,tan∠ABO=3.直线OP交AB于N,DC于M,点H从原点O出发沿x轴的正半轴方向以1个单位每秒速度运动,同时,点R从原点O出发沿OM方向以个单位每秒速度运动,设运动时间为t秒.(1)分别写出A,C,P三点的坐标;(2)经过坐标原点O且顶点为P的抛物线是否经过C点,请说明理由?(3)当t为何值时,△ANO与△DMR相似?(4)设△HCR面积为S,求S与t的函数关系式;并求以A、B、C、R为顶点的四边形是梯形时t的值.。

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2013年黄高预录模拟试题二
一.选择题(每小题至少有一个选项符合题意,每题5分,共30分)
1.近年来全球变暖最主要的原因是 ( ) A .被大气吸收的太阳辐射增加 B .被大气反射到太空的太阳辐射增加 C .被大气吸收的地表辐射增加 D .被地表反射到太空的太阳辐射增加
2.小明晚上在阳台上发现远处在燃放连珠礼花,礼花绽放时间间隔均匀,闪光之后1秒有一声爆响。

利用手表。

在某次看见闪光开始计时。

听到最后一声爆响停止计时,历时10s ,共有3次闪光,4次爆响,由此他提出了礼花燃放地点到他家距离的几种可能值 你认为最接近真实值的是( )
A. 340m
B.1020m
C.2380m
D.2720m
3.如图,斜面长为L 、高为h ,物体重为G ,用一个水平推力F 将物体匀速推上斜面的顶端。

则下列说法正确的是 ( ) A.斜面的效率为η=Gh/FL
B.斜面的效率为
C.斜面对物体的摩擦力为f=(FL-Gh )/L
D.力F 对物体所做的功,等于物体机械能的增加值 4.下列说法正确的是( )
A. 在电磁感应现象中机械能转化为电能
B .奥斯特实验说明了电流在磁场中会受到力的作用
C .电动机的工作原理是电磁感应现象
D .小磁针能指南北是因为它受到地磁场的作用
5.如图所示,质量分布均匀的甲、乙两个实心正方体放置在水平底面上,它们对地面的压强相同,若要使甲对地面的压强大于乙对地面的压强,下列叙述中正确的是 ( ) A.沿竖直方向上切去相同的体积 B. 沿竖直方向上切去相同的厚度 C.沿水平方向切去相同的质量 D. 沿水平方向切去相同的体积
6.下列说法正确的是( )
A .竖直向上抛出的石块,当石块运动到最高点时,石块处于静止状态
B .漂浮在水面上的木块,木块底部受到水的压力等于木块排开水的重力
C .物体运动状态改变,一定是受到了力的作用
D .踢出去的足球最终会停下来是因为足球具有惯性
二.填空题(每小题6分,共24分)
7.科学家早已预言,太阳在50亿年后会膨胀成一颗红巨星,届时吞噬掉离太阳最近的二颗行星,,地球地面的温度将升高到今天的两三倍,最后变成白矮星。

而质量比太阳大得多的恒星,最终会归结于中子星或黑洞。

中子星的密度是如此之大,平均每立方厘米的质量竟为一亿吨之巨!科学家表示,太阳膨胀会使地球的生物生存区域重新分布。

大约20亿年后,太阳就会使地球变得不再适合生存。

(1)在太阳演化为红巨星的膨胀过程中,地球会变得不适合生物生存,你认为其主要原因是 。

(2)大恒星归结为中子星后,原来的原子结构不复存在。

你觉得原来的原子结构中的原子核内的质子和核外电子所带的电荷,到哪里去了呢?你的猜想是 。

(3)铀-235的原子核在发生裂变时能放出大量的能量。

铀核的密度也是非常巨大的,大约是 千克/米3,你得出的依据是
8.如图所示,重为600牛的人站在300牛的木块上,人拉绳使木块和人一起向左匀速直线运动,人与木块相对静止。

若地面给木块的摩擦力是木块给地面压力的0.2倍,不计滑轮轴心的摩擦。

则:

1
)木块受到地面的摩擦力为 牛
(2)人受到木块的摩擦力为 牛,方向为 ;(填“向
左”或”向右”)
(3)木块除受到重力、地面支持力、地面的摩擦力外,还受到什么力? 9.如图所示,大水槽里有不相溶的A 、B 两种液体,A 液体的密度为ρ,B 液体的密度为2ρ。

一个边长为a 的小立方体物块,一半浸没在A 液体中,另一半浸没在B 液体中,物块的上表面与A 液体上表面齐平,则物块的密度为________ρ。

若在物块上端加一个大小为物块重力0.1倍的竖直向下的压力,则物块下沉的距离为________a 。

(物块始终未与水槽底
部接触)
10.血管变细是“高血压”病的诱因之一。

为研究这一问题,我们可做一些简化和假设:设血液通过一定长度血管时受到的阻力f 与血液流速v 成正比,即f=k v (其中k 与血管粗细无关),为
维持血液匀速流动,在这血管两端需要有一定的压强差。

设血管内径为d1时所需的压强差为△p,
若血管内径减为d2时,为了维持在相同时间内流过同样多的血液,此时血液的流速是原来的___
_ __倍;血管两端的压强差必须变为原来的_ __ _ __倍。

三.综合题(共26分)
11.(12分)图示电路中,电源的电压为U,r为定值电阻,闭合开关,调节滑动变阻器,当电
压表示数U1=105V时,电流表示数I1=1A,当电压表示数U2=100V时,电流表示数I2=2A。

(1)求电源的电压U和电阻r的阻值。

(2)利用该电源给电阻R1=180Ω的电水壶供电,经过9
分钟可以使250g的水温度从30℃升高到60℃。

若利用该电
源给电阻R2=360Ω的电水壶供电,要使同样多的水升高相同
的温度,应该加热多长时间?设两次加热时水每秒钟散失的
热量相等,水的比热容为4.2×103J/(k g·℃)。

12. (14分)工作人员用如图甲所示装置把水质监控仪器放入水中。

第一次使仪器A在水中匀
速上升的过程中(A未露出水面),人对绳子竖直向下的拉力为F1,绳端的速度为v1,机械效
率为η1;第二次把仪器B固定在A下方,A和B在水中匀速上升的过程中(A未露出水面),人
对绳子竖直向下的拉力为F2,绳端的速度为v2,机械效率为η2;η1: η2=34:35。

已知
V A=V B=3×10-3m3,G A=3G B,G B=50N。

拉力F1、F2做功随时间变化的图像分别如图乙中①、②
所示。

(不计绳重、滑轮与轴的摩擦及水的阻力,g取10N/kg)
求:(1)A所受的浮力F


(2)动滑轮的重G


(3)求v1、v2的比值。

甲。

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