014—2015学年度第二学期第11周八校联考 试题答卷
2014-2015学年度上学期八校联考测试卷
2014-2015学年度上学期八校联考测试卷高三数学(理科)命题人:新建二中 肖英文 上饶中学 黎金传本试卷分第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.第Ⅰ卷(选择题 共60分)考生注意: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粘贴的条形码的“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.2.第I 卷每小题选出答案后,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.第Ⅱ卷用黑色墨水签字笔在答题卡上作答.若在试题卷上作答,答案无效.3.考试结束,监考员将试题卷、答题卡一并收回.一、选择题(本大题共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)1. 对于集合错误!未找到引用源。
和集合错误!未找到引用源。
,若满足错误!未找到引用源。
,则集合错误!未找到引用源。
中的运算“错误!未找到引用源。
”可以是( )A .加法B .减法C .乘法D .除法2. 复数z 为纯虚数,若i a z i +=-)2( (i 为虚数单位),则实数a 的值为( )A .21- B .2 C .2- D .21 3. 下列关于命题的说法错误的是( )A .命题“若0232=+-x x ,则1=x ”的逆否命题为“若1≠x ,则0232≠+-x x ”;B .“错误!未找到引用源。
”是“函数错误!未找到引用源。
在区间错误!未找到引用源。
上为增函数”的充分不必要条件;C .若命题p :错误!未找到引用源。
,则p ⌝:错误!未找到引用源。
;D .命题“错误!未找到引用源。
”是真命题.4. 数列错误!未找到引用源。
中,已知错误!未找到引用源。
,则错误!未找到引用源。
( )A .错误!未找到引用源。
B .错误!未找到引用源。
C .错误!未找到引用源。
D .错误!未找到引用源。
高三2014-2015学年度第二次联考(参考答案)(4月28日定稿)
江西省新八校2014-2015学年度第二次联考高三数学理科试题卷参考答案一、选择题:共12小题,每小题5分,共60分。
在每个小题给出的四个选项中,只有一项是符合题目要求的。
ACADA BCDAD CA二、填空题:本大题共4个小题,每小题5分,共20分.请把答案填在答题卡上.13.7114.023=+-y x 15.π10 16.),21[+∞-三、解答题:本大题共6个小题,共70分.解答应写出文字说明,证明过程或演算步骤.请把答案做在答题卡上.17.解:(1)()1cos(2)3cos 21sin 23cos 212sin(2).23f x x x x x x ππ⎡⎤=-+-=+-=+-⎢⎥⎣⎦----3分 又,42x ππ⎡⎤∈⎢⎥⎣⎦,则32326πππ≤-≤x ,故当232x ππ-=, 即512x πα==时,max () 3.f x = -------------------------------------------------------------------------------6分(2)由(1)知123A ππα=-=,由2sin sin sin B C A =即2bc a =,又222222cos a b c bc A b c bc =+-=+-, 则22b c bc bc +-=即2()0b c -=,故0.b c -= c b =∴ 又123A ππα=-=所以三角形为等边三角形. 12分18.解:(1)依题意可得,任意抽取一位市民会购买口罩的概率为41, 从而任意抽取一位市民不会购买口罩的概率为43. 设“至少有一位市民会购买口罩”为事件A ,则,()6437642714313==⎪⎭⎫⎝⎛=--A P ,故至少有一位市民会购买口罩的概率6437. --------------------- 5分 (2)X 的所有可能取值为:0,1,2,3,4.-------------------------------6分()25681430404=⎪⎭⎫ ⎝⎛==C X P ,()642725610841431314==⨯⎪⎭⎫ ⎝⎛⨯==C X P ()1282725654414322224==⎪⎭⎫ ⎝⎛⨯⎪⎭⎫ ⎝⎛⨯==C X P ,()6432561241433334==⎪⎭⎫ ⎝⎛⨯⎪⎭⎫ ⎝⎛⨯==C X P ,()25614144=⎪⎭⎫⎝⎛==X P 所以X 的分布列为:X0 1 234P256816427 12827 643 2561 ---------------------------------------------------------------- 10分 ()125614643312827264271256810=⨯+⨯+⨯+⨯+⨯=X E 12分 或⎪⎭⎫ ⎝⎛414,B ~X ,1==∴np EX -----------------------------12分19.【解析】【方法一】(1)证明:由题意知23,D C = 则222B C D B D C B D D C+∴⊥=,, P D A B C D B D P D P D C D D ⊥∴⊥= 面而,,,..B D P DC P C PD C B D P C ∴⊥∴⊥ 面在面内,(6分) (2)过E 作EH CD ⊥交CD 于H ,再过H 作HN ⊥AB 交AB 于N ,连结EN ,则AB EN ⊥,故ENH ∠为所求角。
北师大版八校联考2014-2015学年高二下学期期末英语试题及答案
2015春期河南省部分示范性高中二年级联考英语参考答案21-40题每题2分,共40分21-24BCDA25-28DCAB 29-32BCDB 33-35DAB36-40EGDCB41-60题每题1.5分,共30分41-45ACBDA 46-50CDBDA 51-55CBBCD 56-60AADCB语言知识运用61-70题每题1.5分,共15分61appearance 62were given 63because/as 64with 65jump66him 67So/Thus 68named 69When 70who短文改错每题1分,共10分71have—had 72stand—standing 73seem—seemed 74immediate—immediately 75away与the之间加from76 around删除77that—what 78late—later 79but— and80on—in书面表达(one possible version) 满分25分Dear jack,I am going to the airport to meet a friend and then I will show him around the city.I am afraid that I won’t be back home until 5 pm.Would you please do me a favour and clean the living room when you come back?At about four o’clock our neighbor li Ming will return a book to me ,so please let him in and put the book back on my bookshelf.By the way, I’d like to ask you to eat out this evening to welcome the arrival of my friend,from whom you might expect to receive some surprise gifts.Wait and see what they are .新课标第一网系列资料。
2024届高三八省八校第二次学业质量评价 (T8联考)英语试卷(含解析)
2024届高三第二次学业质量评价(T8联考)英语试题八校:(广东实验中学、东北育才中学、石家庄二中、华中师大一附中、西南大学附中、南京师大附中、湖南师大附中、福州一中)第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上。
录音内容结束后,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。
例:How much is the shirt?A.£19.15.B.£9.18.C.£9.15. 答案是C。
1.Why is the man late for work?A.He repaired his clock.B.The clock didn’t ring.C.He experimented unsuccessfully.2.How will the woman get her health report?A.She will get it after work.B.The man will send it to her.C.Her sister will get it for her.3.What does the man want to do?A.See a doctor.B.Deliver a speech.C.Keep a frog.4.Where can the woman get the bus information?A.From the apartment.B.From the bus stop.C.From the local library.5.When will the man leave?A.In the morning.B.In the afternoon.C.In the evening.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。
贵州省八校联盟2015届高三第二次联考语文试题 Word版含解析
贵州省八校联盟2015届高三第二次联考语文试卷命题:遵义四中高三语文备课组本试题卷分第I卷(阅读题)和第II卷(表达题)两部分。
考生作答时,将答案答在答题卡上(答题注意事项见答题卡),在本试题卷上答题无效。
考试结束后,将答题卡交回。
满分150分。
考试时间150分钟。
第Ⅰ卷阅读题甲必考题一、现代文阅读(9分,每小题3分)阅读下面的文字,完成1-3题。
雾霾的成因与防治雾霾,雾和霾的组合,是特定气候条件与人类活动相互作用的结果。
高密度人口的经济及社会活动必然会排放大量细颗粒物(PM 2.5),一旦排放超过大气循环能力和承载度,细颗粒物浓度将持续积聚。
此时如果受静稳天气等影响,极易出现大范围的雾霾。
春季开始,我国中东部地区会逐渐出现轻雾天气。
随时间推移,轻雾、雾和霾的范围逐渐加大,程度逐渐加剧;特别是北京天津等地连续雾霾,严重影响市民的生活质量。
霾的组成成分非常复杂,包括数百种大气化学颗粒物质。
其中有害健康的主要是直径小于10微米的气溶胶粒子,如矿物颗粒物、海盐、硫酸盐、硝酸盐、有机气溶胶粒子、燃料和汽车废气等,对人体和生态环境都有很严重的影响。
在稳定的天气形势下,空气中的污染物在水平和垂直方向上都不容易向外扩散,污染物在大气的浅层积聚,从而导致污染的状况越来越严重。
而人为因素一是由于大气污染物排放负荷巨大,远超出环境承载能力。
北方在冬季取暖时,大部分地区燃煤量大幅增加,导致大气污染物排放量急剧上升。
二是复合型大气污染日益突出。
三是汽车尾气污染问题更加突出。
雾霾对公路、铁路、航空、航运、供电系统、农作物生长等均产生重要的不良影响,空气质量下降,影响生态环境,给人体健康带来较大危害。
雾霾天气时,空气中往往会带有细菌和病毒,易导致传染病扩散和多种疾病发生。
使城市中空气污染物不易扩散,加重了二氧化硫、一氧化碳、氮氧化物等物质的毒性,危害人体健康。
尤其冬季遇雾、霾天气时,若空气污染严重,这样可能形成烟尘或黑色烟雾等毒雾,严重威胁人的健康甚至生命。
2015届高三八校第二次联考 文综答案
湖北省2015届高三八校第二次联考文科综合地理参考答案:1—5题 DCDAC 6—10题 ACCAC 11题 C36题(共24分)(1)阿姆河流域为温带大陆性气候和高山气候(2分),以积雪融水、冰川融水为主(2分)。
3、4月,从下流到中游,各个高度地带依次融化,首先在低的地带,然后逐步转移到最高地带,形成长时间的春汛(3分););6月—10月,上游高大的山脉高原地区大量的冰雪融水补给和迎风坡以降水补给为主,形成夏秋汛(2分)。
(2)从甲到丙,只有季节性支流的汇入,枯水期季节性河流无水汇入,汛期季节性河流汇入径流,所以丙点河流流量的季节变化更大(3分);从甲到丙,干流沿途的蒸发、下渗和人们用水的消耗,所以丙点河流流量较小(3分);从甲到丙,落差越来越小,泥沙沉积河床,丙点河流含沙量减小(3分)。
(3)利用当地的光热资源优势发展长绒棉、葡萄等特色农业;干旱地区要有灌有排,防止土壤次生盐碱化;降水少且季节变化大,修水渠、水库等水利工程提高水资源的利用率,防旱涝;植树种草防止风沙和土地沙化;针对该地区严重缺水,发展喷灌、滴灌以及耐旱农作物为主的节水农业;发展农产品的深加工,增加附加值,提高农民的收入;(共6分每点2分,合情合理得分)36题评分细则:(1)气候类型(2分)河流补给类型(2分)3、4月,各个高度地带依次融化(2分,写到高度与0°气温的关系也可),春汛(1分)6—10月,冰雪融水补给和迎风坡以降水补给为主(1分,冰川融水为主),形成夏秋汛(1分)(2)丙点河流流量的季节变化更大(结论1分)过程:重点枯水期和洪水期,补给(2分)丙点河流流量较小(结论1分)过程:蒸发、下渗和人们用水的消耗(2分,答对一点1分)丙点河流含沙量减小(结论1分)过程:落差越来越小,泥沙沉积河床(2分,平坦,沉积)(3)(共6分每点2分,合情合理得分)37、(22分)(1)深居内陆,远离海洋,地形闭塞,云量少,光照条件好(2分);该地为温带大陆性气候,气温的年变化大,红枣耐寒、耐高温,抗大风能力强,成活率高(2分);从4月到10月,该地区气温高适宜红枣的生长发育和成熟,结果率高(2分);该地气温的日较差大,有利于糖分的积累,品质好(2分);该地区年降水量稀少,红枣的耐旱能力强,成活率高(2分)。
高中英语真题-八校联盟2015届高三第二次联考试卷
高中英语真题:八校联盟2015届高三第二次联考试卷本试卷分为第I卷(选择题)和第II卷(非选择题)两部分,满分120分,考试用时100分钟。
注意事项:1. 答卷前,考生务必在答题卡上相应的位置准确填写自己的姓名、准考证号,并将条形码粘贴在指定位置。
2.选择题选出答案后,用2B铅笔将答题卡上对应题目的答案标号按要求涂黑。
如需改动,用橡皮擦干净后,再选涂其它答案标号。
非选择题用签字笔直接答在答题卡上对应的答题区域内。
第Ⅰ卷第一部分阅读理解(共20小题;每小题2分,满分40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,并在答题卡上将该项涂黑。
(共15小题;每小题2分,满分30分)AAs any plane passenger will confirm, a crying baby is almost i mpossible to ignore, no matter how hard you try. Now scientists believe they may have worked out why. A baby’s cry pulls a t the heartstrings(扣人心弦) in a way while other cries don’t, researchers found. Researchers found that a baby’s cry can trigger unique emoti onal responses in the brain, making it impossible for us to ign ore them---whether we are parents or not. Other types of cries, including calls of animals in great pain, fail to get the same response---suggesting the brain is programmed to respond specifically to a baby’s cry.A team of scientists scanned the brains of 28 men and wom en as they listened to a variety of calls and cries. After 100 mil liseconds two parts of the brain that respond to emotion lit up. Their response to a baby’s cry was particularly strong. The re sponse was seen in both men and women—even if they had no children.Researcher Dr Christine Parsons said, “You might read that men should just notice a baby and step over it and not see it, but it’s not true. There is a special processing in men and wo men, which makes sense from an evolutionary(演变的) view that both men and women would be responding to th ese cries.” The study was in people who were not parents, yet they are all responding at 100ms to these particular cries, sothis might be a fundamental response present in all of us rega rdless of parental status.Researcher Katie Young said it may take a bit longer for som eone to recognize their own child’s cries because they need t o do more “fine-grained analysis”. The team had previously found that our rea ctions speed up when we hear a baby crying. Adults performe d better on computer games when they heard the sound of a baby crying than after they heard recordings of adults crying.1. A baby’s cry is difficult to ignore because it _____.A. keeps on cryingB. cries harder than adultsC. causes people great painD. makes people feel strong emotions2. The underlined word “trigger” in Paragraph 2 probably mea ns “_____”A. removeB. avoidC. causeD. Cure3. What may Christine Parsons agree to?A. Almost everyone makes certain response to a baby’s crie s.B. A crying baby makes no sense to people without children.C. Men pay less attention to a crying baby than women.D. Parents can hardly recognize their own babies’ cry.4. Computer games are mentioned in the text to show _____.A. players’ different reactions to a crying babyB. baby’s crying contributes to quicker reactionsC. the influence of baby’s and adult’s crying on performanceD. it’s hard to keep one’s concentration with a crying baby n earbyBNicola Tesla was born on 10th July 1856 in Croatia, a country in Eastern Europe. From a very young age, Tesla was interes ted in electricity. In 1881, one of the first telephone exchanges opened in . Tesla moved there and got a job. It was here that Tesla first thought of the idea of the alternating current(AC交流电).In 1884, Tesla moved to and worked for Thomas Edison, but only for less than a year. Tesla was sure his AC motor was th e best way to capture(获取) and transport the power of electricity. However, Edison th ought his way of using direct current(DC) was better and cons idered AC unsafe. But soon the scientific community accepted AC was more powerful than DC and it was proved safe.In 1895, Tesla designed the first water power plant using theenergy of the . And he did it using the AC motor. After the suc cess of AC, Tesla became well known. He travelled and spok e to many scientists about his inventions and ideas. He built a large laboratory where he did amazing things with lights and electricity. However, it burned down not long after it was built. As Tesla got older, he continued to come up with new ideas a nd theories. But he was less successful and famous. Many pe ople didn’t recognize that particular inventions were really Tes la’s ideas.Tesla gave speeches about creating electrical power from the earth’s atmosphere. He also talked about ways that wireless electricity and communication could power things all over the world! But to the people of his time, these ideas sounded craz y. However, some of his ideas have now been supported by modern research and technology.Tesla’s last years were lonely and sad. He received many aw ards, but received very little money. When he died in 1943, he was no longer famous and felt forgotten. Today, not many pe ople know the name of Nicola Tesla but his inventions and ide as affect our lives every day!5. Why did Tesla stop working for Edison?A. Tesla was badly paid there.B. Tesla wanted to move back to Europe.C. They had very different characters.D. They had some di sagreements.6. In his later years, Tesla_____.A. was misunderstood and doubtedB. lived a colorful life .C. was unable to think out new ideasD. rose to fame as an award-winning inventor7. We can learn from the text that Tesla_____.A. became famous as an assistant to EdisonB. was way ah ead of modern technologyC. had great interest in travellingD. was not good at sp eeches8. Which of the following can be the best title for the text?A. Nicola Tesla, a challenger for difficultiesB. Nicola Tesla, a dreamer in scienceC. Nicola Tesla, a forgotten inventorD. Nicola Tesla, a s trange scientistCThere was a strange father, John Blake, from , who named hi s children after a computer software term. He told the local newspaper the US traditional way of adding“Junior”or“II”after a boy’s name was too common. So, when his son was born last week, he decided on the name John Blake 2.0, as if he were a soft ware programmer.Mr. Blake admitted that it took months to persuade his wife, J amie, to accept the idea. Mrs. Blake said she asked several fri ends whether they could accept this name or not. “All the men ,” she said, “felt the name was cool.” However,her women friends did not think so.“I think the women end up like it,”she said.Mr. Blake told the local newspaper he got the idea from a film called The Legend of 1900,in which an abandoned baby is given the name 1900 to reme mber the year of its birth. “I thought that if they can do it ,why can’t we?”he said. After little John version 2.0 was born, Mr. B lake even sent a celebratory e-mail to the family and friends, which was designed to look as i f he and his wife had created a new software.“I wrote things li ke there are a lot of new features from Version 1.0 with additi onal features from Jamie,”he said. And he has already planne d for his son’s future. “If he has a child, he could name it 3.0,”he said.9.From the passage we know that “John Blake 2.0”_____.A. is also the name of a computerB. shows the traditional way of American baby namingC. has the same meaning as“John Blake Junior”D. tells something about the hope the father places on his ba by10.What do the name of “1900”and“Jon Version 2.0”have in c ommon?A. They are both connected with computer.B. They are both untraditional.C. They both tell about the births.D. They are to be equally popular.11. Which of the following is true according to the passage?A. All Mrs. Blake’s friends support their idea.B. The name“1900”is also a computer software term.C. When Mr. Blake had a second child, he would name it “Jo hn Version 3.0”.D. Mrs. Blake didn’t agree to name her son after a computer software term at the very beginning.DWith the development of society, many people are coming u nder the umbrella of fatness. Not just adults,but even children are getting overweight. Today some of the n ewborn babies are also born fat. It has been proved that the p eople living in the western developed countries are more likel y to become overweight. There are a number of causes behin d this.The people in the developed countries including the almost e njoy all the comforts of life. Almost all the things in the lives of the people living in these countries are at their finger tips. A v ery limited amount of movement and physical effort is require d to do any kind of job. Because of the fact that these countrie s are quite developed,most of the jobs that the people take up are desk jobs. So the lifestyle of them is just around the office desk.Most of the western developed countries are cold ones. Natur e demands that people eat the kinds of food so as to make th em stand the coldness. Therefore,wine,fatty dairy products,bread,junk food,and red meat become important diets in these countries. However,the blame cannot be entirely put on the unhealthy eating habit s of the people. Technology allows them to import almost all the food products that they do not grow. Although some health y foods are grown in the countries nowadays,the quantity is very limited. It is not enough to meet the dema nd. So when they are not available and fatty foods are cheape r, people prefer to go for the eating habit that they have alway s been following.12. According to Paragraph 2,most people in the developed countries do ______.A. office jobsB. management jobsC. physical jobsD. tiring jobs13. According to the text, the reason why people in the wester n developed countries have to eat some fatty foods is that ___ _.A. the unhealthy eating habit is not importantB. fatty foods cost less to buy and healthy foods are in shorta geC. healthy foods are in shortage and fatty foods are abundant.D. they can’t put the blame on their eating habits.14. The purpose of the author in writing the text is to ________ _.A. warn us of our bad eating habits in the developed countriesB. remind us of the relation between food and weight gainC. inform us of the causes of weight gain in the developed co untriesD. tell us that fatness in the developed countries is natural15. People in the western developed countries often ________ __.A. carry umbrellas with themB. blame the fatness on the weat herC. grow a lot of healthy foods in their countriesD. eat to prote ct themselves from the coldness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,并在答题卡上将该项涂黑。
湖北省八校2015届高三第二次联考数学(文)试题(扫描版)
湖北省 八校2015届高三第二次联考数学试题(文科)参考答案 鄂南高中 黄冈中学 黄石二中 荆州中学 襄阳四中 襄阳五中 孝感高中 华师一附中一、选择题1-5 DCBAC 6-10 DBCBB二.填空题 11. 2512. 2425- 13. { 12-, 14.43 15. 6 16. 12或 17 ②③④⑤1.【解析】选D .由A =A B ,可得A ⊆B ,即得4zi =,4z i =-,z 的共轭复数为4i2.【解析】选C .线性约束区域如下图,2z x y =+看作是122z y x =-+,当经过x 2=y 与1x y +=的交点12(,)33时,z 取最大值53.3.【解析】选B .满足条件的有3组:视力在0.9到1.1;视力在1.1到1.3;视力在1.3到1.5,纵轴表示的是频率/组距,所以可以报考A 专业的有(1+0.75+0.25)×0.2×50=20(人).4.【解析】选A .由正弦定理可得B A B cos sin 2=sin ,即3=sin 2=tan A B ,所以3=πB ,因此这是一个正三角形. 5.【解析】选C .易得中间的那份为20个面包,设最小的一份为1a ,公差为d ,根据题意,于是有[20+(d a 3+1)+(d a 4+1)]×+=711a (d a +1),解得1a =35. 6.【解析】选D .这是一个正三棱柱,外接球的球心就是两底面三角形的中心连线的中点,外接球的半径等于球心到正三棱柱的任意一个顶点的距离,可求半径为321,那么外接球的表面积为ππ328=37×4. 7.【解析】B .直线0a x b y +=与圆22(2)2x y -+=无公共点,则有a b >⇒>,满足该条件的基本事件有15种,基本事件总数是36种,故所求概率为512P =.8.【解析】选C .选项A 中,22222()2200a b a b a b ab ab ab ab+++≤-⇔+=≤⇔<是00a b ><且的必要不充分条件,所以A 错;选项B 中,由321a a a <<得101a q >⎧⎨>⎩或1001a q <⎧⎨<<⎩,可以推出54a a <;但若54a a <,则该数列有可能是摆动的等比数列,如:1,-1,1,-1,1,-1……,此时推不出321a a a <<,所以B 错;选项D 中,当00x <时,0000333()()1444x x x =>=0034x x ⇔>,所以D 错. 9.【解析】选B .选项A 中,区间[1,0],[0,1],[1,1]--都可以是“等可域区间”;选项C ,D 中,函数均为增函数且与y x =不可能有两个交点;选项B 中,“等可域区间”为[1,1]-.10【解析】选B .结合二次函数的顶点坐标为(24-24b ac b a a-,),根据题意可得241b ac ∆=-=,①,二次函数图像和x 轴的两个交点分别为(+102b a -,)和(102b a --,),利用射影定理即得:11()1622b b a a-+---⨯=⇒22164b a -=,结合①先求出a 和c 之间的关系,代入①可得到,(c b ,)所在的曲线为2214c b +=,表示椭圆. 11.【解析】52.向量a 在向量b 方向上的投影为2||cos ==5a b a a b b ?>,. 12.【解析】2425-.3cos()25πα+=-,即3sin 5α=,又α为钝角,4cos 5α=-,24sin 22sin cos 25ααα==-.13.【解析】{12-,.令x 2=21或x 2log =21或21=log 2-x .14.【解析】43.P 点只能在抛物线上半部分,设P 点为(x ,EG PH ==2FG =,解得31=x ,14133PF =+=.15.【解析】6.因为a x x f -2=)(',即过A 点的切线斜率为a -2,与直线320x y ++=垂直,可得a =-1从而x x x f +=)(2,1111()(1)1f k k k k k ==-++,程序的算法中,1111115(1)()()1223116S k k k =-+-+-=->++,跳出循环时6k =. 16.【解析】12或.先令12x #,那么224x #,c x f x f )2(=)(=])32(1[12--x c;再令48x #,那么242x#,)21(=)(x cf x f =21[1(3]2c x --);分别算出它们的极值点为(c 123,),(3,1),(6,)c ,三点共线解得12c c ==或.17.【解析】 ②③④⑤①-1B ∈,1B ∈,但是11=2B ---∉,B 不是“完美集”;②有理数集肯定满足“完美集”的定义;③0A ∈,y x ,A ∈,0-y =-y ∈A ,那么A ∈+=)y (y x x --;④对任意一个“完美集”A ,任取y x ,A ∈,若y x ,中有0或1时,显然xy A ∈;下设y x ,均不为0,1,而()()222222+1++1=21+21=1y x y x y x y x xy xy xy ---- 1-,x x A ∈,那么()11=111---x x x x A ∈,所以()A ∈1-x x ,进而()A ∈=+12x x x x -,结合前面的算式,A ∈xy ;⑤y x ,A ∈,若0≠x ,那么A ∈1x ,那么由(4)得到:x y A ∈.三.解答题18(Ⅰ)由函数)(x f 的图象,ωπππ2)3127(4=-=T ,得2=ω,又3,32πϕπϕπ=∴=+⨯,所以)32sin()(π+=x x f . ……………………3分 由图像变换,得1)2sin(1)()(--=--=ππx x f x g .……………………6分∴ 627分∵ m n 与共线,∴ sin 2sin 0B A -=.由正弦定理 9分 ∵ 3c =,由余弦定理,得 ②……………………11分……………………………………12分 19. (Ⅰ)11=a ,22=a 且{}n a 是等差数列,n a n =,当n 为奇数时,11n n n b a a +=-=,即13521......1n b b b b -=====;当n 为偶数时,121n n n b a a n +=+=+,则25b =,469,13b b ==,10012100139924100......+(....)(....)50494150(505)52002S b b b b b b b b b =++=+++++++⨯⨯=⨯+⨯+=………………6分(Ⅱ) {}n b 是公差为2的等差数列,1211b a a =-=,21n b n =-.当n 为奇数时,121n n n b a a n +=-=-;当n 为偶数时,121n n n b a a n +=+=-.即2122122124341n n n nn n b a a n b a a n --+=-=-⎧⎨=+=-⎩21212n n a a +-⇒+=且2321n n a a ++=,因为11,a = 13521..... 1.1n a a a a -⇒====⇒=,242n a n =-,1 (n )2 2 (n )n a n ⎧=⎨-⎩,为奇数∴,为偶数 ………………………………………12分20. 解析:(Ⅰ)//////CE BFCE ABF CE ABF CE ACE l CE BF ABF ABF ACE l ⎫⎫⎪⎪⊄⇒⊂⇒⎬⎬⎪⎪⊂=⎭⎭面面面面面面.……………6分(Ⅱ)1,ABF AF BF AF BF AB AE BCEF BE CF G 为等腰直角三角形取正方形两对角线的交点为∆⎫==⎫⎪⇒⇒⎬⎬⊥∴==⎪⎭⎭,AG BE BE ACF ACF ABE AG CF BE BE ABE ⊥⊥⎫⎫⇒⇒⊥⎬⎬⊥⊂⎭⎭面面面交线为面 ①1AF EF AF FE AF BCEF AF BF AE ==⎫⊥⎫⎪⇒⇒⊥⎬⎬⊥=⎪⎭⎭面, 在Rt AFC ∆中,连接OG ,得11//22OG AF OG AF ==且,且,tan 2tan 22OF OC OFC OCF Rt AFG FAG FGA ⎫=⇒∠=∠=θθ=⎪⎪⎬π⎪∆∠=⇒∠=-θ⎪⎭中, 2FGA OFG OF AG π⇒∠+∠=⇒⊥② 结合①②得,即 OF ⊥面ABE . ………………………………………………13分21.(Ⅰ)ln 1()x f x x +=,(0x >),2ln ()x f x x -'=, 即(0,1),()0x f x '∈>,当(1,)x ∈+∞,()0f x '<,所以()f x 在区间(0,1)上单调递增,在区间(1,)+∞上单调递减,在1x =处取得极大值,极大值为(1)1f =,无极小值.……………………………4分 (Ⅱ)方法1:因为ln(1)1x k kx -++≤,ln(1)1ln(1)1(1)1x x k x k x -+⇒-+-⇒-≤≤ max (1)k f x -≥对任意的1x > 恒成立,由(1)知max ()(1)1f x f ==,则有max (1)1f x -=,所以1k ≥ .……………………………………………9分 方法2:记()ln(1)(1)1g x x k x =---+,1(),(1)1g x k x x '=->-, 0k ≤当时,()0g x '≥, 0k >当时,由()0g x '>得11,x k <+即0k ≤当时()(1,)g x +∞在上为增函数;0k >当时1()(1,1+)g x k 在上为增函数;在11,k ⎛⎫++∞ ⎪⎝⎭上为减函数. 因为对1,ln(1)(1)10,x x k x ∀>---+≤ 即要求()0g x ≤恒成立,所以0k >符合且max 1()(1)ln g x g k k+=-=≤0得1k ≥. ………………………………………………………………9分 (Ⅲ)1ln ()x f x x +=,由(Ⅰ)知max 1ln ()()(1)1x f x f x f x+=≤==, 则1ln ln 111x x x x x +≤⇒≤-(当且仅当1x =取等号). 令2x n =(,2n N n *∈≥),即222ln 11n n n <-,则有 222222222222ln 2ln 3ln 111111......(1)(1)....(1)(1)(....)23232311111111131(1)(....)(1)(....)+2334(1)2334121n n n n nn n n n n n n n +++<-+-+-=--++<--++=---+-++-=-⨯⨯⨯+++ 222222222l n 2l n 3l n l n 2l n 3l n 31......2(.......)+232321n n n n n n +++=+++<-+∴ ∴2222ln 2ln 3ln 13121.......(+)232214(1)n n n n n n n --+++<-=++ 则得证 ……………………………………………………………… 14分22.解:(Ⅰ)由题意知22a c a c b c⎧-=⎪⎨-=⎪⎩,解得2a b =⎧⎪⎨=⎪⎩ 故椭圆C 的方程22142x y +=.……………………………………………………4分 (Ⅱ)由题意知直线MN 的斜率存在,设直线MN 的方程为(4)y k x =-. 由22(4),1.42y k x x y =-⎧⎪⎨+=⎪⎩ 得2222(21)163240k x k x k +-+-=. ① 设点11(,)M x y ,22(,)N x y ,22222212221222212122(16)4(21)(324)1696016213242112(4)(4)21k k k k kx x k k x x k k y y k x x k ⎧=--+-=->⎪⎪+=⎪+⎪⎨-=⎪+⎪⎪=--=⎪+⎩ 212122244426==222121k OM ON x x y y k k -+=-++,2106k <≤ 即5[4,)2OM ON ∈- . …………………………………………………… 9分 (Ⅲ)由(Ⅱ)知,11(,)T x y -,直线TN 的方程为212221()y y y y x x x x +-=--. 令0y =,得221221()y x x x x y y -=-+. 将11(4)y k x =-,22(4)y k x =-代入, 整理,得12121224()8x x x x x x x -+=+-. ② 由①得 21221621k x x k +=+,212232421k x x k -=+代入②整理,得1x =. 所以直线TN 恒过定点(1,0)Q . …………………………………………14分。
语文江西省新八校2014-2015学年度第二次联考参考答案(定稿)
江西省新八校2014-2015学年度第二次联考语文试卷答案本次联考,语文命卷及评卷说明:一、高考已经临近了,为了进一步增强考生直面高考的信心,激发他们的潜质,试卷的难度力求适中,并稍微的偏易点儿。
阅卷时,可稍微严格些,让考生明白规范作答的重要性、必要性。
二、针对高三后期已进入冲刺阶段,因此,更着重突出基础与基础向能力的转化这两个方面的考查,矫正考生在语文复习中的僵化思维(这集中反映在第1题、第4题、第7题、第9题、第11(3)题、第12(1)题、第13题),并注重落实新课标卷强调的对语文工具性和人文性的检测(这反映在第3题、第11(4)题、第12(4)题、第16题、第17题)。
二、纳入试卷的各类语文阅读材料本身,不设置阅读障碍,力求真正做到让它们成为一种考察的“载体”而已!我们注重的并尊重的,是学生自己理解和分析文字的能力,是学生科学、合理的阅读思维和高效、准确的答题能力(无论文言文,大、小阅读,选用的材料并不算深奥、艰涩,这在“选做题”部分表现得更为明显)。
三、作文题,追求“稳”,不刻意搞什么怪题、刁题。
但说明一下的是,此次命题,不从惯常的“微生活”的截面式材料切入来出题目,而换上考查“大主题”的东西(只是用寓言生活来“包装”罢了)。
这对于我们考生的备考,是否更“实”、更“近”些?对于作文,这次模考,着力突出辩证思维和分析问题的深广度的训练。
1.C (A“依照《尚书》中记载的用土圭测量正午太阳影子的方法”,错误;B“用农历划分的二十四节气”错误,应是“用阳历(太阳历)划分二十四节气”; D“有近二十个节气”错误,应是二十四个节气。
)2.C (确立了二十四节气在中国古代哲学体系中的重要地位,这一说法于文无据)3.D (A混淆范围;B逻辑混乱; C曲解文意)4. C (造意:首倡某种主意、办法。
文中是指想出主意来。
视息:仅存视觉﹑呼吸等,谓苟全活命。
故事:事情,以前的事。
)5. B(②、④句不符合要求)6.B (并非“让蔡法度重审其父冤安”,而是让蔡法度去弄清楚吉翂代父去死是不是被人利用。
2015届湖北省八校联考文综参考答案
2015届高三第一次联考文科综合参考答案地理选择题1、C2、D3、A4、B5、C6、B7、C8、B9、A 10、B 11、D综合题36.(24分)(1)①克里米亚半岛是俄罗斯从黑海进入地中海、印度洋、大西洋的重要窗口;②克里米亚半岛拥有优良海湾和天然良港,是重要的海上贸易通道;③俄罗斯纬度较高,海运不发达,而克里米亚半岛沿岸多终年不冻港,利于发展海运。
(6分,合理可酌情给分)(2)雅尔塔比辛菲罗波尔冬季气温高(1分),冬季降水多。
(1分)原因:雅尔塔位于克里木山地南坡,南临黑海,冬季北部山地阻挡冷空气入侵(2分),加上黑海增温作用(2分),冬温较高;辛菲罗波尔位于山脉北侧,冬季受冷空气影响较大,冬温较低。
(2分)冬季盛行西风,雅尔塔距海近(1分),且北部山地对西风阻挡抬升明显(1分),降水更丰富;辛菲罗波尔距海相对较远(1分),且对水汽抬升不明显(1分),降水偏少。
(3)①临近葡萄产区,品质优良;②著名旅游、疗养胜地,市场需求量大;③葡萄酒生产历史悠久,经验丰富;④生产技术设备先进。
(6分,任答3点)37.(22分)(1)河套平原:流水堆积鄂尔多斯地区:风力堆积(4分)(2)①地势四周比内部相对较高;②气候干燥,降水稀少,蒸发旺盛;③流沙广布,地表水下渗多,④河流稀少,流程短,汇入内陆湖盆难以入海。
(8分)(3)原因:产业结构单一,居民投资渠道单一;煤价下跌;房地产泡沫破灭;城市规划超前,城市建设欠下巨额债务。
(任答3点6分)启示:及时调整产业结构,推动经济转型;做好城市建设合理规划(4分)42. 旅游地理(10分)(1)Ⅱ区和Ⅲ区(2分)原因:冬季我国北方寒冷,Ⅱ区是我国气候最温暖的地方,可在此观赏热带风光、避寒。
(2分)冬季可以在Ⅲ区观赏美丽的冰雪景观。
(2分)(2)夏季从四川盆地至青藏高原,可以看到四季的景观。
或冬季可以从海南到黑龙江,可以看到四季的景观(方案合理即可,4分)43.自然灾害(10分)(全球变暖)北极升温快,极地高压对极地涡旋控制力减弱(2分),强大极地涡旋入侵导致北极寒冷气流急剧南下(2分);美国中部大平原纵贯南北,寒冷气流受地形阻挡小,可直达美国东部(2分);东部沿海受墨西哥湾暖流与沿岸大西洋暖湿气流影响,水汽含量充足(2分);强大寒冷气流与暖湿气流交汇,形成严重暴风雪(2分)。
2015学年第二学期高一年级英语学科八校联考答案
2015学年度第二学期高一年级英语学科八校联考录音稿及答案Keys:1-5 D C D A B 6-10 D B C D B11-12 B C 13-14 B A15 hairstyle 16. hairdresser17. raise money/ collect money/ raise funds 18. use real names19. sharing needs 20. emergency/ a real need/ a financial need/ a need21. ourselves 22. to seek 23. that / which 24. without 25 Building26. have to 27. As28. rising 29. Because 30. when 31.so that 32. feeling 33. a34. was restored 35. the most exciting36-40 C G J K F 41-45 B A I E H46-50 D A D C C 51-55A D D B A 56-60 C D C B C61-63 B D C 64-66C B C 67-70 A D D C71. fatter / obese / put on weight / gain weight / have expanding waistline72. emissions from its factories and automobiles(如果写成the mountains that trap emissions from…..给1分)73. reduced lung function / the reduction of lung function74. Because of the growing burde n of obesity in today’s highly polluted world.) / Because more and more people become obese in today’s highly polluted world.Translation:75. Out of / Because of boredom, he stared at the tea leaves floating in the glass. (3分)76. Are you aware that a bird’s (eye) viewfrom the top of the mountain/ on the top of the mountainis enough to enjoy the beautiful scenery here? (4分)/ Are you aware that you can enjoy the beautiful scenery here if you have a bird’s(eye) viewfrom the top of the mountain/ on the top of the mountain?(评分参考:are you aware 1分;a bird’s (eye) view 1分;the top of themountain 1分;enjoy the beautiful scenery here1分)77.Recently,a program , which is known as / named AlphaGo, has attracted global attention by beating the world's best /top players. (5分)Tape scriptsI. Listening Comprehension 20%Section A Short ConversationsDirections: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard.1.W: Excuse me, do you need any help?M:Yes, I do. I’m looking for a nice card.Q: where does the dialogue probably happen?2.W:So. We’ve got roses, lilies, tulips and some cute orchids.M:Oh, Get rid of the lilies please, which my wife doesn’t like very much.Q: How many kinds of flowers will the man take?3.M:We’ve got two new members to join us in the campaign against pollution, Mary andJennie. Do you know them?W: Sure. Mary is th e most talkative woman I’ve ever met. But Jennie’s just on the contrary.Q:What do we learn from the woman’s remark about Jennie?4.W: How long will it take you to fix my computer?M:I’ll call you when it’s ready. But it shouldn’t take longer than a week.Q: What is the probable relationship between the two speakers?5.M: Is that physics course really as hard as everybody says?W: Worse, believe it or not.Q: What does the woman say about the course?6.M: Mrs. James. This is the food you purchased online yesterday and you chose payment,right?W:Ahh, it finally arrived.Q: What probably is the man?7.W:It’s freezingly cold. Let me make some coffee to warm us up. Do you want a piece ofpie as well?M:coffee sounds great. But I’m going to have dinner with some friends in a while, so I’d better skip the pie.Q: What does the man want to have?8.W: According to the news report this morning, John won a prize of 6,000 dollars.M: Yes. He gave a third of it to his wife. He kept a third for himself and divided the other third equally among his four children.Q: How much money did each child receive?9.W: Where is the Art Museum, please? I thought it is somewhere near here.M:You’re close! Go up to the light in front of us. Then walk two blocks west.Q: What can we learn from the conversation?10.W: Mr. Johnson, have you heard the morning news report? Mill has resigned his post as PrimeMinister.M: I didn’t turn on the r adio this morning, but I did see the headlines. Do you still remember he threatened to leave office at the last cabinet meeting?Q: How did Mr. Johnson learn that the Prime Minister has resigned?Section B PassageDirections: In Section B, you will hear two short passage, and you will be asked two questions on each of the passages. The passages will be read twice, but the questions will be spoken only once. When you hear a question, read the four possible answers on your paper and decide which one would be the best answer to the question you have heard.Questions11 and 12 are based on the following passage.The two most famous faces in Britain today belong to two women who appear on television almost every night. If you open any popular magazine, you’ll almost certainly see an article about one of them with lots of photographs. Their names are Susan Raben and Anna Ford. Susan reads the nine o’clock news on BBC television, and Anna reads the ten o’clock news on Independent Television.Most news announcers in Britain are men. And when Susan began her job at the BBC three years ago, she was the first woman news announcer. Newspapers and magazines started to take an interest in her, and reporters began to write about her.Last year, Independent Television also decided to have a woman news announcer and they chose Anna Ford. Newspapers and magazines showed a great interest in her too. When Anna read the news for the first time on the ten o’clock program, millions of people who don’t normally watch the program decided to watch it that night to see Anna Ford.(Now listen again, please)Questions:11: When did Susan get her present job?12:What made Anna’s first appearance on TV a big attraction?Questions13 and 14 are based on the following passage.Drowning is among the top five causes of death for children under the age of 15. The United Nations agency found that boys and girls living near open water sources, such as ponds and irrigation ditches, are especially at risk. Meanwhile, In Asia, the problem is no less serious. On average, drownings kill at least one child every 15 minutes somewhere in Asia. Children in Asia are especially at risk in extreme heat during the summer by swimming in potentially unsafe water to escape the heat. Rainy season also witnesses a lot of drowning. Heavy rains in Pakistanwere blamed for killing around 100 people, including women and children. TheAsia-based group Alliance for Safe Children says drowning rates in developing countries are 10 to 20 times higher than those in developed countries. The Alliance's survey found that Bangladesh hasthe highest rates of child drownings: almost 17,000 a year. Vietnam followed Bangladesh with more than 11,500 child drownings a year. In Thailand, about 2,600 children drown each year. In China, information for most provinces is not available. But in Jiangxi province alone, discovered evidence showed more than 4,600 child drownings a year. That is also a rate of 10 deaths every day.The World Health Organization and others groups are urging Asian countries to push for water safety and survival skills. Besides, governments and swimming organizations can work together to campaign for improved water safety. The WHO adds that governments need to guarantee safe boating and rules for passenger boat services. It warns that governments also need to improve flood risk management.(Now listen again, please)Questions:13. Which country has the highest rates of child drowning?14. Which of the following is true according to the passage?Section C Longer ConversationDirections: In Section C, you will hear one longer conversation. The conversation will be read twice. After you hear the conversation, you are required to fill in the numbered blanks with the information you have heard. Write your answers on your answer sheet.Blanks 15 to 16 are based on the following conversation.W:Hi, Bob. Your hair looks nice and fashionable. It’s a bit shorter than usual, isn’t it?M:Fashionable? A BIT shorter? I don’t think so. It’s a LOT shorter. When I look in the mirror, I don’t even know who is looking back at me.W:So you got your hair cut, but you didn’t get the hair-style that you wanted?M: This is not even close to the hairstyle that I wanted. I asked to have my hair cut a little bit, but when I looked down, there were piles of my hair on the floor. I couldn’t believe it.W: Well, what did you say to the hairdresser?M:What could I say? The hair was already cut off. Could I say, “Please put it back on?”W: Well, at least your hair will grow soon.M:That’s what everyone is saying to me, “It’ll grow back. It’ll grow back.” But it won’t grow fast enough to make me happy.W:Don’t be upset. Maybe you’ll get used to it, and you’ll like it a bit more.(Now listen again, please.)Complete the form. Write ONE WORD for each answer.Blanks 17 through 20 are based on the following conversation.W:I need to get away. I’d like to have enough money.M: Yeah, you need money to take a trip.W:I’ll never be able to take a trip.M:Hold on…You can raise money.W:You mean hold yard sales or bake sales? That’s a terrible idea.M: I was thinking that you could set up an account with GoFundMe.W:Wait, that’s the website where people raise money for different needs, right?M: Right.W:Are you kidding? Don’t most people raise money for real needs? A personal vacation isn’t a need.M: It can be. Besides, you can choose to keep your campaign private.W: I don’t know…I heard that people can find your information.M: People can only access your campaign if they have your link. And you choose who you give your link to.W: Honestly, I feel like GoFundMe is not reliable.M:You worry too much. First, you are required to use your real name when creating your campaign. Second, it’s mostly for your friends and family.W: That’s the problem. I don’t necessarily want them to know I’m asking for money.M:Jessie, You don’t receive donations from strangers, at least not right away. Sharing your needs with friends and family is a major reason why GoFundMe works so well. They’ll help spread the word.W: I hate asking for money. I mean---it’s embarrassi ng.M: No one likes asking for money. But I think some people love giving money to someone with a financial need. If you don’t ask, they will never know about it.W: But a vacation isn’t an emergency or anything.M: Well, people can choose whether or not to give.W: I don’t know, Neil, this whole fundraising site seems weird to me. I think I’ll pass.M:Well, you want to go on that trip, right? You don’t have the money, and you don’t want to try GoFundMe, so why not just think about it.W:OK, I’ll think about it.(Now listen again)Complete the form. Write NO MORE THAN THREE WORDS for each answer.That’s the end.。
初二数学14-15第二学期期末试卷及答案
马鞍山市2014—2015学年度第二学期期末素质测试八年级数学试题一、选择题:本大题共10小题,每小题3分,共30分.每小题所给的四个选项中只有一个是正确的,请将正确答案的代号填在题后的括号内. 1.正六边形的每一个内角是()A .30º B .60º C .120º D .150º 2.下列计算不正确的是( )A =BC 3=D =3.在某校“我的中国梦”演讲比赛中,有9名学生参加决赛,他们决赛的最终成绩各不相同.其中的一名学生想要知道自己能否进入前5名,不仅要了解自己的成绩,还要了解这9名学生成绩的( ) A .众数 B .方差 C .平均数 D .中位数 4.一元二次方程210x x -+=的根的情况是( )A .有两个相等的实数根B .有两个不相等的实数根C .只有一个实数根D .没有实数根 5.在下列命题中,是真命题的是( )A .两条对角线相等的四边形是矩形B .两条对角线互相垂直的四边形是菱形C .两条对角线互相平分的四边形是平行四边形D .两条对角线互相垂直且相等的四边形是正方形 6.已知,,a b c 是ABC △的三边长,22(13)|5|0b c -+-=,则ABC △是( )A .以a 为斜边的直角三角形B .以b 为斜边的直角三角形C .以c 为斜边的直角三角形D .以c 为底边的等腰三角形 7x 的取值范围是( ) A .11x x ≤≠-且 B .10x x ≤≠且 C .11x x <≠-且 D .11x -<≤8.某机械厂一月份生产零件50万个,第一季度生产零件196万个.设该厂二、三月份平均每月的增长率为x ,那么x 满足的方程是( ) A .250(1)196x += B .25050(1)196x ++=C .25050(1)50(1)196x x ++++=D .5050(1)50(12)196x x ++++=9.如图,矩形ABCD 的面积为210cm ,对角线交于点O ;以AB 、AO 为邻边作平行四边形1AOC B ,其对角线交于点1O ;以AB 、1AO 为邻边作平行四边形12AO C B ;…;依此类推,则平行四边形56AO C B 的面积为( )A .254cmB .258cm第9题图O 2C 2C 1O 1O DCBAC .2516cmD .2532cm 10.如图,四边形ABCD 是边长为9的正方形纸片,将其沿MN 折叠,使点B 落在CD 边上的B '处,点A 对应点为A ',且3B C '=,则AM 的长是( ) A .2 B .2.25 C .2.5 D .2.75二、填空题:本大题共8个小题,每小题3分,共计24分. 112a =-,则a 的取值范围是 .12.一元二次方程2x x =的根是 .13.某校对全校600名女生的身高进行了测量,身高在158~163(单位:cm)这一小组的频率为0.25,则该组的人数为 人. 14.方程22210x x --=的两个实数根分别为1x ,2x ,则12x x = .15.已知m 是方程2210x x --=的一个根,且27148m m a -+=,则a 的值等于 . 16.如图,将两张长为8cm ,宽为2cm 的矩形纸条交叉放置,重叠部分可以形成一个菱形,那么当菱形的两个相对顶点与矩形顶点重合时,菱形的周长为 cm .17.某品牌瓶装饮料每箱价格26元,商场对该瓶装饮料进行“买一送三”促销活动,若整箱购买,则买一箱送三瓶,这相当于每瓶比原价便宜了0.6元.那么该品牌饮料一箱装有 瓶. 18.在矩形ABCD 中,∠AOB =60°,AF 平分DAB ∠,过C 点作CE BD ⊥于E ,延长AF 、EC 交于点H ,连接OF .给出下列4个结论:①BO BF =; ②∠FOB =75°; ③CA CH =; ④3BE ED =.其中正确结论的序号是 (请将所有正确结论的序号都填上). 三、解答题:本大题共6小题,共46分.解答应写出文字说明、证明过程或演算步骤.19.本题满分8分,每小题4分. (1)计算:解:原式66=--………………4分(2)解方程:22410x x -+=解:x ====……2分所以原方程的解为12x x =………………………4分20.本题满分7分HOFE D C B A 第18题图省射击队为从甲、乙两名运动员中选拔一人参加全国比赛,对他们进行了六次测试,测)根据表格中的数据,计算出甲的平均成绩是 环,乙的平均成绩是 环; (2)分别计算甲、乙六次测试成绩的方差; (3)根据(1)、(2)计算的结果,从发挥的稳定性看,你认为推荐谁参加全国比赛更合适,请说明理由. 解:(1)1089810996x +++++==甲 ,10710109896x +++++==乙 ………2分(2)2222(910)(98)(99)1101102s663-+-++-+++++===L 甲2222(910)(97)(98)1411014s663-+-++-+++++===L 甲…………4分(3)因为22s s <甲乙,甲的成绩比较稳定,故选甲参加全国比赛更合适. (7)分21.本题满分7分如图,A ,B 是公路l 两旁的两个村庄,A 村到公路l 的距离AC =1km ,B 村到公路l 的距离BD =2km ,已知45CAB ∠=︒.(1)求出A ,B 两村之间的距离;(2)为方便村民出行,计划在公路边新建一个到两村的直线距离相等公共汽车站P ,求的长. 解:(1)方法一:设AB 与CD 的交点为O ,根据题意可得45A B ∠=∠=°. ACO ∴△和BDO △都是等腰直角三角形.AO ∴=BO =∴A B ,两村的距离为AB AO BO =+==(km ).…………3分 (2)过线段AB 的中点O 作线段AB 的中垂线OP 交CD 于P , 连PA PB 、,则PA PB =设PD x =,则3PC x =-由勾股定理知:22221(3)2x x +-=+解得1x =即PD 的长为1km …………………………………7分22.本题满分8分如图,有一张菱形纸片ABCD ,AC =8,BD =6.(1)请沿着AC 剪一刀,把它分成两个部分,把剪开的两部分拼成一个平行四边形,在图一中用实线画出你所拼成的平行四边形,并直接写出这个平行四边形的周长;(2)若沿一条直线剪开,拼成一个矩形,请在图二中用实线画出你所拼成的矩形,并直接写出这个矩形的周长; (3)沿一条直线(不准是对角线)剪开,拼成与上述两种周长都不一样的平行四边形,请在图三中用实线画出你所拼成的平行四边形.DCBAACDCBA 图1 图2 图3解:图1周长=图2周长= 解:图1 图2 图3CA(1)共3分,其中正确作图1分,周长=26 (2分); (2)共3分,其中正确作图1分,周长=985(2分); (3)正确作图2分(本题作图不唯一,只要正确即得分.)23.本题满分8分D C BA 第22题图某商店购进600个旅游纪念品,进价为每个6元,第一周以每个10元的价格售出200个,第二周若按每个10元的价格销售仍可售出200个,但商店为了适当增加销量,决定降价销售(根据市场调查,单价每降低1元,可多售出50个,但售价不得低于进价),单价降低x 元销售一周后,商店对剩余旅游纪念品清仓处理,以每个4元的价格全部售出,如果销售这批旅游纪念品共获利1250元,问第二周每个旅游纪念品的销售价格为多少元?解:设第二周每个旅游纪念品降价x 元,由题意得:10200(10)(20050x)(60020020050)466001250x x ⨯+-++---⨯-⨯=化简:2210x x -+=,解得121x x == ……………………………………6分 ∴10-1=9,答:第二周的销售价格为9元. ……………………………………………8分24.本题满分8分如图所示,在ABC △中,分别以AB ,AC ,BC 为边在BC 的同侧作等边ABD △,等边ACE △和等边BCF △. (1)求证:四边形DAEF 平行四边形;(2)探究下列问题:(只填满足的条件,不需要证明) (2)探究下列问题:(只填满足的条件,不需要证明)①当∠BAC = 时,四边形DAEF 是矩形;②当△ABC 满足 条件时,四边形DAEF 是正方形; ③当△ABC 满足 条件时,四边形DAEF 是菱形; ④当∠BAC = 时,以D A E F ,,,为顶点的四边形不存在.解:(1)证明:由条件知,△ABD ,△ACE ,△BCF 是等边三角形,所以在△ABC和△DBF 中,有,AB DB BC BF == 又60ABC ABF DBF ∠=︒-∠=∠ 所以△ABC ≌△DBF ,从而有DF AB AE ==……………………2分 同理△ABC ≌△EFC从而有EF AB AD ==………………………3分 所以四边形DAEF 平行四边形. …………4分 (2)①150︒;②AB AC =,且150BAC ∠=︒;③AB AC BC =≠;④60︒(每小题1分,共4分)第24题图FEDCB A。
贵州省八校联盟2015年高三第二次联考理综试题带答案
秘密★考试结束前【考试时间:3月 22日9.00—11:30 】贵州省八校联盟2015届高三第二次联考试卷理科综合命题学校:遵义四中联考学校:贵阳六中清华中学遵义四中凯里一中都匀一中都匀二中安顺一中毕节一中本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,考试时间150分钟,满分300分。
注意事项:1. 答卷前,考生务必在答题卡上相应的位置准确填写自己的姓名、准考证号,并将条形码粘贴在指定位置。
2.选择题选出答案后,用2B铅笔将答题卡上对应题目的答案标号按要求涂黑。
如需改动,用橡皮擦干净后,再选涂其它答案标号。
非选择题用签字笔直接答在答题卡上对应的答题区域内。
可能用到的相对原子质量:H-1 C-12 N-14 O-16 S-32 Cl-35.5 Ca-40 Br-80 Ag-108 Fe-56第Ⅰ卷一.选择题:本题共13题,每小题6分。
在每小题给出的四个选项中,只有一项是符合题目的要求的。
1.下列关于化合物的说法,正确的是A. 有些蛋白质具有信息传递作用,如性腺分泌的性激素B. 水分和无机盐在人体内的平衡有利于保持内环境稳态C. 真核生物的遗传物质都是DNA,部分原核生物遗传物质是RNAD. 糖原是重要的多糖,当人体血糖浓度降低时,可通过肌糖原的分解来直接调节血糖平衡2.下列与细胞分裂相关的叙述,正确的是A. 二倍体生物体细胞有丝分裂过程中,染色体DNA与细胞质DNA平均分配B. 人体细胞减数第一次分裂后期与减数第二次分裂后期细胞中都有两个染色体组C. 蛙的红细胞在分裂时不出现纺锤丝,但有染色体出现D. 生物前后代染色体数目的恒定都是通过有丝分裂实现的3.萨顿依据“基因和染色体的行为存在明显的平行关系”的类比推理,从而提出“基因是由染色体携带着从亲代传递给下一代”的假说,以下哪项不属于他所依据的“平行”关系A. 基因和染色体,在体细胞中都是成对存在,在配子中都只有成对中的一个B. 非同源染色体上的非等位基因在形成配子时自由组合;非同源染色体在减数分裂中也有自由组合C. 作为遗传物质的DNA,是由两条反向平行的脱氧核苷酸长链盘绕形成的D. 基因在杂交过程中保持完整性和独立性;染色体在配子形成和受精过程中,也有相对稳定的形态结构4.某双链DNA分子含有200个碱基,一条链上A∶T∶G∶C=1∶2∶3∶4,则该DNA分子A. 含有4个游离的磷酸B. 连续复制两次,需要游离的腺嘌呤脱氧核苷酸210个C. 四种含氮碱基A∶T∶G∶C=3∶3∶7∶7D. 碱基对排列方式共有4100种5.柯萨奇病毒A16型(CA V-16)常引起儿童手足口病和其他并发症。
20150401湖北省八校2015届高三第二次联考文科数学试卷+答案-推荐下载
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八校 2015 届高三第二次联考文数试题 第 2 页 共 12 页
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对全部高中资料试卷电气设备,在安装过程中以及安装结束后进行高中资料试卷调整试验;通电检查所有设备高中资料电试力卷保相护互装作置用调与试相技互术关,系电通,力1根保过据护管生高线产中0不工资仅艺料可高试以中卷解资配决料置吊试技顶卷术层要是配求指置,机不对组规电在范气进高设行中备继资进电料行保试空护卷载高问与中题带资2负料2,荷试而下卷且高总可中体保资配障料置2试时32卷,3各调需类控要管试在路验最习;大题对限到设度位备内。进来在行确管调保路整机敷使组设其高过在中程正资1常料中工试,况卷要下安加与全强过,看度并25工且52作尽22下可护都能1关可地于以缩管正小路常故高工障中作高资;中料对资试于料卷继试连电卷接保破管护坏口进范处行围理整,高核或中对者资定对料值某试,些卷审异弯核常扁与高度校中固对资定图料盒纸试位,卷置编工.写况保复进护杂行层设自防备动腐与处跨装理接置,地高尤线中其弯资要曲料避半试免径卷错标调误高试高等方中,案资要,料求编试技写5卷术、重保交电要护底气设装。设备置管备高4动线调、中作敷试电资,设高气料并技中课试3且术资件、卷拒中料管试绝包试调路验动含卷试敷方作线技设案,槽术技以来、术及避管系免架统不等启必多动要项方高方案中式;资,对料为整试解套卷决启突高动然中过停语程机文中。电高因气中此课资,件料电中试力管卷高壁电中薄气资、设料接备试口进卷不行保严调护等试装问工置题作调,并试合且技理进术利行,用过要管关求线运电敷行力设高保技中护术资装。料置线试做缆卷到敷技准设术确原指灵则导活:。。在对对分于于线调差盒试动处过保,程护当中装不高置同中高电资中压料资回试料路卷试交技卷叉术调时问试,题技应,术采作是用为指金调发属试电隔人机板员一进,变行需压隔要器开在组处事在理前发;掌生同握内一图部线纸故槽资障内料时,、,强设需电备要回制进路造行须厂外同家部时出电切具源断高高习中中题资资电料料源试试,卷卷线试切缆验除敷报从设告而完与采毕相用,关高要技中进术资行资料检料试查,卷和并主检且要测了保处解护理现装。场置设。备高中资料试卷布置情况与有关高中资料试卷电气系统接线等情况,然后根据规范与规程规定,制定设备调试高中资料试卷方案。
贵州省八校联盟2015届高三下学期第二次联考数学(理)试
一、选择题(本大题共12个小题,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.)1.已知集合{}{}|(3)0,|1|2,A x x x B x x =-<=-<则“A x ∈”是“B x ∈”的( ) A. 充分不必要条件 B. 必要不充分条件 C. 充分必要条件 D. 既不充分也不必要条件 【答案】A 【解析】考点:1.集合间的相互关系;2.充分条件与必要条件 2.已知⎩⎨⎧∉+∈+=Rx x i Rx x x f ,)1(,1)(,则=-))1((i f f ( ).2.1.3.3A iB C D i -+【答案】C考点:1.分段函数求值;3.设随机变量 ),4,2(~N ξ若)32()2(-<=+>a P a P ξξ,则实数a 的值为 ( )9.5.35.1.D C B A【答案】B 【解析】试题分析:因为)32()2(-<=+>a P a P ξξ,所以由正态分布的对称性知,22)32()2(=-++a a ,解之得,35=a ,故应选B .考点:1.正态分布;4.从1,2,3,…,9这9个数中任取5个不同的数,则这5个数的中位数是5的概率等于 ( )5524....7979A B C D 【答案】C 【解析】考点:1.古典概型; 1.5.某几何体的三视图如图所示,则该几何体的体积为 ( ) A.61 B. 21 C. 32 D. 65【答案】D 【解析】A试题分析:该几何体为正方体''''D C B A A B C D-截去三棱锥BD A A '-,所以651121311=⨯⨯⨯-=V ,故应选D.正视图 侧视图俯视图考点:1.三视图;2.简单几何体的体积;6.已知数列{}n a 是等差数列,若2462,4,6a a a +++构成等比数列,这数列{}n a 的公差d 等于 ( ).1.1.2.2A B C D --【答案】B 【解析】考点:1.等比数列;2.等差数列;7.执行如图所示的程序框图,如果输入63,153==Q P ,则输出的P 的值是 ( ).2.3.9.27A B C D【答案】C 【解析】考点:1、程序框图与算法;2、辗转相除法8.若二项式*(3)()nx n N -∈中所有项的系数之和为a ,所有项的系数的绝对值之和为b ,则b aa b+的最小值为 ( )5139.2...262A B C D 【答案】B 【解析】考点:1.二项式定理;2、函数的最值;9.由不等式组1001xx y e y x +≥⎧⎪-≥⎨⎪≤≤⎩确定的平面区域为M ,由不等式组010x y e ≤≤⎧⎨≤≤⎩确定的平面区域为N ,在N 内随机的取一点P ,则点P 落在区域M 内的概率为 ( )3213.1.1.1.12A B C D eeee----【答案】D 【解析】10.如图,在正方形ABCD 中,F E ,分别是CD BC ,的中点,沿EF AF AE ,,把正方形折成一个四面体,使D C B ,,三点重合,重合后的点记为P ,点P 在AEF ∆内的射影为O .则下列说法正确的是( )A. O 是AEF ∆的垂心B. O 是AEF ∆的内心C. O 是AEF ∆的外心D. O 是AEF ∆的重心【答案】A【解析】A F考点:1、线面垂直的判定定理;2、三角形的“四心”;11.双曲线222214x ya b-=的右焦点F与抛物线24y px=)0(>p的焦点重合,且在第一象限的交点为M,MF垂直于x轴,则双曲线的离心率是( )A.2 B.12【答案】C【解析】考点:1.双曲线;2.抛物线;12.在平面直角坐标系中,O 为坐标原点,1===→→→OD OC OB ,→→→→=++0OD OC OB ,(1,1),A 则→→⋅OB AD 的取值范围( )11.11.2211..122A B C D ⎡⎡⎤------+⎢⎣⎦⎣⎡⎡-+-+⎢⎣⎣【答案】B 【解析】13.已知==+αα2sin ,5)4cos(则 . 【答案】725- 【解析】试题分析:27sin 2cos(2)cos 2()12cos ()24425πππαααα=-+=-+=-+=-. 考点:1、倍角公式;2、同角三角函数的基本关系14.已知数列{}n a 的前*2,(,)()2n n n S n S n N y x x ∈=+项和为点在函数的图象 上,则数列}{n a 的通项公式为 . 【答案】41n a n =-考点:1、等差数列;2、函数的概念15.已知函数),2()2,()((+∞⋃--∞∈=x x f y ,在其图像上任取一点),(y x P 都满足方程224 4.x y -=①函数()y f x =一定具有奇偶性; ② 函数)2,()(--∞=在x f y 是单调函数;(2,),+∞使以上说法正确的序号是 .率问题,(3)(4)都是满足条件的。
上海市八校高三数学11月联考试题沪教版
上海市八校2015届高三数学11月联考试题沪教版(满分150分,考试时间120分钟)一、填空题(本大题满分56分)本大题有14题,只要求直接填写结果.1. 设集合{}{}210,,2,A x x x R B x x x R =-≥∈=<∈,则 ()R A B I ð=_________. 2. 函数11y x =+的反函数1()f x -=_____________. 3. 数列1,5,9,13,…的一个通项公式可能是n a =__________________. 4. 若1tan()44πα-=,则tan α=________________. 5. 方程)3(log )1(log )13(log 444x x x ++-=-的解是_____________________. 6. 已知等差数列{}n a 的前n 项和为n S ,若a a +317=10,则S 19=_______________. 7. 设函数()f x x a =-(a 为常数),若)(x f 在区间 ),1[+∞上是增函数,则a 的 取值范围是 __________ .8. 设等比数列{}n a ,11a =,公比2q =,若{}n a 的前n 项和127n S =,则n 的值为 ____ .9. 若定义在R 上的奇函数()f x 对一切x 均有(4)()f x f x +=,则(2016)f =_________.10. 设ABC ∆中,角,,A B C 所对的边分别为,,a b c ,若4,,43a A B ππ===,则ABC∆的面积S =_______________.11. 若集合{}2(1)320,A x a x x x R =-+-=∈有且仅有两个不同的子集,则实数a 的 值为________________. 12. 已知函数()cos 23f x x π⎛⎫=+⎪⎝⎭, 若函数()g x 的最小正周期是π,且当,22x ππ⎡⎤∈-⎢⎥⎣⎦时()()2x g x f =,则关于x 的方程()g x =的解集为________________________.13. 设函数1cos ,0,2()2sin cos ,,222x x f x x x x πππ⎧⎡⎤-∈⎪⎢⎥⎪⎣⎦=⎨⎛⎤⎪∈ ⎥⎪⎝⎦⎩,则函数()f x 的图像与x 轴围成的图形的面积是____________.14. 设()2xy f x =+为奇函数,且()()2g x f x =+,若(2)g t -=,则(2)f =__________. (用含t 的代数式表示)二、选择题(本大题满分20分). 15. 函数()f xsin(),24x x R π-∈的最小正周期为 【 】 A .4πB .2πC .πD .2π 16. 设数列{}n a ,1a =1,前n 项和为n S ,若13n n S S +=()*n N ∈,则数列{}n a 的 第5项是 【 】A . 81B .181C. 54D. 162 17. 设常数0a >且1a ≠,则函数()log xa f x a x =-的零点个数不.可能..是 【 】 A. 1个 B. 2个 C.3个 D. 4个 18. 设ABC ∆中,角,,A B C 所对的边分别为,,a b c ,则“o90C ∠>”的一个充分非必要条件是 【 】A .222sin sin sin ABC +<B.1sin ,cos 44A B ==C.22(1)c a b >+- D.sin cos A B <三、解答题(本大题满分74分)本大题共有5题,解答下列各题必须写出必要步骤. 19. (本题满分12分,7分+5分)已知函数22()2sin ()4f x x x π=--(1)求()f x 的单调递增区间; (2)求函数()f x 在区间[0,]6π上的最大值.20. (本题满分14分,6分+8分) 已知函数4()lg 21x f x x +⎛⎫=-⎪+⎝⎭的定义域为集合A ,函数()g x =B 。
湖北省八校2015届高三英语下学期第二次联考考试试题(含解析)
湖北省八校2015届高三第二次联考英语考试时间:2015年04月02日下午15:00—17:00本试题卷共10页,81题。
全卷满分150分。
考试用时120分钟。
★祝考试顺利★注意事项:1.答卷前,考生务必将自己的姓名、班级、准考证号填写在答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。
用2B铅笔将答题卡上试卷类型A方框涂黑。
2.选择题的作答: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。
答在试题卷、草稿纸上无效。
3.完成句子和短文写作题的作答:用黑色墨水签字笔直接答在答题卡上对应的答题区域内。
答在试题卷、草稿纸上无效。
4.考生必须保持答题卡的整洁。
考试结束后,请将答题卡上交。
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。
录音内容结束后,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A. A teacher.B. A doctor.C. A policeman.2. What will the man do?A. Change the plan.B. Wait for a phone callC. Sort things out.3. What does the woman mean?A. She will not take any medicine.B. She hasn’t got a bad cold.C. She will take some medicine in a week.4. What do we learn about the woman?A. The woman is planning a tr ip to Austin.B. The woman hasn’t been to Austin before.C. The woman doesn’t like Austin.5.What can we learn from the conversation?A. The sign is not clear enough.B. The man wants to see the staff.C. The man is in the wrong place.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。
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七年级语文科答题卷 第 1 页 共 4 页
2014—2015学年度第二学期第11周八校联考
七年级语文科答题卷
一至三大题,(1至10小题选择题,每题2分,共20分)
四、本大题4小题,共15分。
11、(共5分)
(1) _______________________________________________________________(2分) (2) (3分)
胖资本家:__________________________________________________ 爱因斯坦:__________________________________________________
12、 ______________________________,________________________________(3分) 13、(1)________________________________________________________________ _________________________________________________________________(2分)
(2)____________________________________________________________________
________________________________________________________________(2分) 14、 _______________ _________________ ________________(3分)
五、本大题2小题,共10分。
15、(每空1分,共6 分,该句错、漏、多字皆不得分)
1)______________________________________________________
2)______________________________________________________
(3)______________________________________________________
(4)______________________________________________________
(5) ________ , ____________
16、翻译(4分,各2分)
⑴____
⑵____
六、本大题7小题,共25分。
(一)阅读《跪着工作,却让站立者叹服》,完成17—19题。
(10分)
17、()(3分)
18、主要表达方式:
例子与好处:
_________________________________________________________(4分)19、______
(3分)(二)阅读《父亲那只寂寞的手》,完成20—23 题。
(15分)
20、___
____________(3分)21、________
_______
_______________(3分)22、_______
______
____________(4分)23、_____
_____
______________(5分)四、24、作文(50分)
七年级语文科答题卷第2页共4页
七年级语文科答题卷第3页共4页
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