达仁中学2016年春季高三综合练习
人教版高中数学选修三春季期中考试试卷.docx
桑水高中化学学习材料2016年春季期中考试试卷高二年级化学试卷(满分100分 时间90分钟)( )、“洗涤剂可以去油污”都是发生了化学变化(括号内为杂质)的方法正确的是( )Cl 2,气液分离 ②乙酸乙酯(乙酸) 用饱和碳酸钠溶液洗涤、④乙醇(乙酸) 加足量生石灰、蒸馏B .②③④ D .①②④;C 60的二苯酚基化合物结构如下图。
下列关于C60的二苯酚基化合物的叙述正确的是( )A.C60的二苯酚基化合物属于芳香烃B.C60的二苯酚基化合物分子式为C73H12O2C.C60的二苯酚基化合物能与氢氧化钠溶液反应D.1mol C60的二苯酚基化合物最多可以与6mol H2发生加成反应5.下列有关乙醇汽油的说法正确的是( )A.乙醇汽油是一种纯净物B.乙醇汽油作燃料不会产生碳氧化物等有害气体,其优点是可以减少对环境的污染C.乙醇和汽油都可作溶剂,也可相互溶解D.乙醇和乙二醇互为同系物6.2003年6月21日,考古专家在西安清理一件刚刚从古墓中出土的西汉早期凤首铜钟时,发现其中盛放着10余斤青绿色的米酒,香味仍然扑鼻。
这种香味是由哪种物质引起的( ) A.乙醇B.乙酸C.乙酸乙酯D.乙醛7.二甘醇可用作溶剂、纺织助剂等,一旦进入人体会导致急性肾衰竭,危及生命。
二甘醇的结构简式是HO—CH2—CH2—O—CH2—CH2—OH。
下列有关二甘醇的叙述正确的是( ) A.不能发生消去反应 B.能发生取代反应C.能溶于水,不溶于乙醇 D.不能氧化为醛8.由实验室制备下列物质时,不用加入浓H2SO4的是( )A.由苯制取硝基苯 B.用乙酸和乙醇制备乙酸乙酯C.由液溴和苯制取溴苯 D.由乙醇制乙烯9.分子式为C n H2n O2的羧酸和某醇酯化生成分子式为C n+2H2n+4O2的酯,反应所需羧酸和醇的质量比为1∶1,则该羧酸是( )A.乙酸B.丙酸C.甲酸D.乙二酸10.用18O标记的CH3CH218OH与乙酸反应制取乙酸乙酯,当反应达到平衡时,下列说法正确的是( )A.18O只存在于乙酸乙酯中 B.18O存在于水、乙酸、乙醇以及乙酸乙酯中桑水C.18O存在于乙酸乙酯、乙醇中 D.若与丙酸反应生成酯的相对分子质量为102 11.有人将工业染料“苏丹红4号”非法用作饲料添加剂,使得某些“红心鸭蛋”中含有对人体有害的苏丹红。
达仁中学2016年春季高三模拟试题 3-有答案
2016年5月达仁中学高三英语模拟试题 3(时间:100分钟;满分120分)第一部分阅读理解(共两节,满分40分)第一节(共15小题,每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。
ANothing could stop Dad. After he was put on disability for a bad back, he bought a small farm in the country, just enough to grow food for the family. He planted vegetables, fruit trees and even kept bees for honey.And every week he cleaned Old Man McColgin’s chicken house in exchange for manure (肥料). The Smell really burned the inside of your nose. When we complained about the terrible smell, Dad said the stronger the manure, the healthier the crops, and he was right. For example, just one of his cantaloupes filled the entire house with its sweet smell, and the taste was even sweeter.As the vegetables started coming in, Dad threw himself into cooking. One day, armed with a basket of vegetables, he announced he was going to make stew (炖菜). Dad pulled out a pressure cooker and filled it up with cabbages, eggplants, potatoes, corns, onions and carrots. For about half an hour. the pressure built and the vegetables cooked. Finally, Dad turned off the stove, the pot began to cool and the pressure relief valve sprayed out a cloud of steam. If we thought Dad’s pile of chicken manure was bad, this was 10 times worse. When Dad took off the lid, the smell nearly knocked us out.Dad carried the pot out and we opened doors and windows to air out the house. Just how bad was it? The neighbors came out of their houses to see if we had a gas leak!Determined, Dad filled our plates with steaming stew and passed them around. It didn’t look that bad, and after the first wave had shut down my ability to smell, it didn’t offend the nose so much, either. I took a taste. It would never win a prize in a cooking competition, but it was surprisingly edible, and we drank up every last drop of soup!21. Why did Dad clean Old Man Mocolgin’s chicken house regularly?A. To earn some money for the family.B. To collect manure for his crops.C. To get rid of the terrible smell.D. To set a good example to us.22. What can we infer about Dad’s stew?A. It is popular among the neighbors.B. It contains honey and vegetables.C. It looks very wonderful.D. It tastes quite delicious.23. What does the underlined word “offend” in the last paragraph mean?A. To attractB. To upsetC. To airD. To shut24. What can we learn about Dad form the text?A. He is an experienced cook.B. He is a troublesome father.C. He has a positive attitude to life.D. He suffers a lot from his disability.BA new study shows students who write notes by hand during lectures perform better on exams than those who use laptops (笔记本电脑).Students are increasingly using laptops for note-taking because of speed and legibility (清晰度). But the research has found laptop users are less able to remember and apply the concepts they have been taught.Researchers performed experiments that aimed to find out whether using a laptop increased thetendency to make notes “mindlessly” by taking down word for word what the professors said.In the first experiment, students were given either a laptop or pen and paper. They listened to the same lectures and were told to use their usual note-taking skills. Thirty minutes after the talk, they were examined on their ability to remember facts and on how well they understood concepts.The researchers found that laptop users took twice as many notes as those who wrote by hand. However, the typists performed worse at remembering and applying the concepts. Both groups scored similarly when it came to memorizing facts.The researchers’ report said, “While more notes are beneficial, if the notes are taken mindlessly, as is more likely the case on a laptop, the benefit disappears.”In another experiment aimed at testing long-term memory, students took notes as before but were tested a week after the lecture. This time, the students who wrote notes by hand performed significantly better on the exam.These two experiments suggest that handwritten notes arc not only better for immediate learning and understanding, but that they also lead to superior revision in the future.25. More and more students favor laptops for note-taking because they can _______.A. write more notesB. digest concepts betterC. get higher scoresD. understand lectures better26. While taking notes, laptop users tend to be ________.A. skillfulB. mindlessC. thoughtfulD. tireless27. The author of the passage aims to ________.A. examine the importance of long-term memoryB. stress the benefit of taking notes by handC. explain the process of taking notesD. promote the use of laptops28. The passage is likely to appear in ________.A. a newspaper advertisementB. a computer textbookC. a science magazineD. a finance reportCThe idea of being able to walk on water has long interested humans greatly. Sadly, biological facts prevent us ever accomplishing such a thing without artificial aid—we simply weigh too much, and all our mass pushes down through our relatively small feet, resulting in a lot of pressure that makes us sink.However, several types of animals can walk on water. One of the most interesting is the common basilisk Basilicus basilicus, a lizard (蜥蜴) native to Central and South America. It can run across water for a distance of several meters, avoiding getting wet by rapidly hitting the water’s surface with its feet. The lizard will take as many as 20 steps per second to keep moving forward. For humans to do this, we’d need huge feet that we could bring up to our ears in order to create adequate “hitting”.But fortunately there is an alternative: cornflour. By adding enough of this common thickening agent to water (and it does take a lot), you can create a “non-Newtonian” liquid that doesn’t behave like normal water. Now, if the surface of the water is hit hard enough, particles (粒子) in the water group together for a moment to make the surface hard. Move quickly enough and put enough force into each step, and you really can walk across the surface of an adequately thick Liquid of cornflour.Fun though all this may sound, it’s still rather messy and better read about in theory than carried out in practice. If you must do it, then keep the water wings handy in case you start to sink—and take a shower afterward!29.Walking on water hasn’t become a reality mainly because humans______.A. are not interested in itB. have biological limitationsC. have not invented proper toolsD. are afraid to make an attempt30.What do we know about Basilicus basilicus from the passage?A. It is light enough to walk on water.B. Its huge feet enable it to stay above water.C. It can run across water at a certain speed.D. Its unique skin keeps it from getting wet in water.31. What is the function of the cornflour according to the passage?A. To create a thick liquid.B. To turn the water into solid.C. To help the liquid behave normally.D. To enable the water to move rapidly.32. What is the author’s attitude toward the idea of humans’ walking on water?A. It is risky but beneficial.B. It is interesting and worth trying.C. It is crazy and cannot become a reality.D. It is impractical though theoretically possible.DInventorsCan you patent and profit from your idea?We have been assisting inventors since 1975. Full range of patenting and marketing services.Confidentiality guaranteedAmerican Inventors Corp.Call for free information:1-800-338-5656Or visit *Parents*Can you afford to raise your hearing impaired child without the insights this highly valued book has to offer? Make life easier for you and your child!Bradford PublicationsFor information: 1-800-354-2760Or visit Earn up to $25,000 a year as a Medical Transcriptionist!No experience is needed. Work the hours you choose. Train at home in your spare time. The medical profession needs skilled transcriptionists. So if you can type, or are willing to learn, we can train you to work at home doing medical transcriptions from tapes dictated by doctors. Get free information!At-Home Profession Corp.Call Toll Free: 1-800-475-0100Or visit Globe Insurance CompanySince 1951, Globe has grown in financial strength and reputation. With over 2.8 million policies in force. Globe is committed to providing affordable life, health and accident insurance for the entire family. It only costs $1 to start your Long Life coverage.Globe Insurance CompanyCall Toll Free, Seven Days A Week, 24-hours A Day. 1-800-358-1945Or visit 33. The best title of the 3rd advertisement would be .A. Training at HomeB. Learning at HomeC. Recording WorkD. Working at Home34. According to the information above, if your child has hearing problems, you can turn to .A. At-Home Profession Corp.B. Globe Insurance CompanyC. Bradford PublicationsD. American Inventors Corp35. From the advertisements above, we can learn that .A. Globe Insurance Company has a history of 51 yearsB. as a medical transcriptionist, you may earn $25,000 a monthC. Bradford Publications offers a treatment to hearing impaired parentsD. you can visit when you invent a new model of hearing aid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。
四川省达州铭仁园中学2016届高三上学期第二次月考化学试卷 Word版无答案.pdf
高三第二次月考 化学试题 可能用到的相对原子质量:He:4 H:1 O:16 Na:23 Al:27 1.金属钛对人体体液无毒且能与肌肉和骨骼生长在一起,有“生物金属”之称。
下列有关48Ti和50Ti的说法正确的是() A.48Ti和50Ti的质子数相同,互称同位素B.48Ti和50Ti的质量数不同,属于两种元素 C.48Ti和50Ti的质子数相同,是同一种核素D.48Ti和50Ti的质子数相同,中子数不同,互称同素异形体 2.下列关于物质结构、性质的说法正确的是() A.因为酸性:HCl>H2CO3,所以非金属性:Cl>C B.同一周期元素的原子,半径越小越容易失去电子 C.K的原子半径比Na的原子半径大,K与水反应比Na与水反应更剧烈 D.离子化合物中可能含有共价键,共价化合物中可能含有离子键 下列单质或化合物性质的描述正确的是( ) A.NaHSO4水溶液显中性B.SiO2与酸、碱均不反应 C.NO2溶于水时发生氧化还原反应D.Fe在足量Cl2中燃烧生成FeCl2和FeCl3 ①X被氧化 ②X是氧化剂 ③Y2-是还原产物 ④X2+具有氧化性 ⑤Y2-具有还原性 ⑥Y单质氧化性比X2+氧化性强A.①②③B.①②⑥C.①③④⑤⑥D.①③④⑤ 5.实验室可用反应NaNO2+NH4Cl==NaCl+N2↑+2H2O制备N2,下列说法正确的是( )A.NaNO2发生氧化反应B.NH4Cl中的氮元素被还原C.N2既是氧化产物,又是还原产物D.每生成1 mol N2转移电子的物质的量为6 mol 6.下列表达中,正确的是( ) A.饱和氯水中可大量共存Na+、CO、SOB.溶液中可大量共存Mg2+、HCO、SO、OH— C.向稀硝酸中加入过量的铁粉:3Fe+2NO+8H+3Fe2++2NO↑+4H2O D.AlCl3溶液和过量浓氨水混合:Al3++4NH3·H2OAl(OH)+4NH ①将BaSO4放入水中不能导电,所以BaSO4是非电解质 ②氨溶于水得到的氨水能导电,所以氨水是电解质 ③固态共价化合物不导电,熔融态的共价化合物可以导电 ④固态的离子化合物不导电,熔融态的离子化合物也不导电 ⑤强电解质溶液的导电能力一定比弱电解质溶液的导电能力强A.①④B.①④⑤C.①②③④D.①②③④⑤ 8.用NA表示阿伏加德罗常数的值。
2016年春季湖北省重点高中联考协作体期中考试高三理综试卷
2016年湖北省重点高中联考协作体春季联考高三理科综合能力测试命题学校:湖北省潜江中学命题教师:关宏柏黄凤勇喻心远罗功铭刘敏刘永彦考试时间:2016年3月31日上午9:00—11:30 试卷满分:300分可能用到的相对原子质量:H—1 O—16 C—12 N—14 Cl—35.5 S—32Na—23 Cu—64 Ca—40 B—11第Ⅰ卷(选择题,共126分)一、选择题(本题包括13个小题,每小题6分,共78分。
每小题只有一项符合题目要求。
)1. 下列关于生物教材中生物实验的叙述,正确的是:A. 斐林试剂配制时,是用A液和B液等体积混合,现配现用B. 观察叶绿体实验取材时,只取新鲜菠菜叶下表皮C. 用不同大小的琼脂块模拟不同大小的同种细胞的物质交换速率实验时,单位时间NaOH扩散进入不同大小的琼脂块中的深度一样D. “洋葱根尖有丝分裂实验”取根尖的长度为5cm2. 下列选项符合概念图的是:A. 若X为跨膜运输的方式,则a-d是自由扩散,协助扩散,主动动输,胞吞胞吐B. 若X为含有N元素的几种有机化合物,则a-d为蛋白质,核酸、胆固醇、磷脂C. 若X为蛋白质类激素,则a-d为乙酰胆碱、抗利尿激素、胰岛素、促甲状腺激素D. 若X为群落的特征,则a-d为物种丰富度、种间关系、群落演替、群落的空间结构3. 下列关于细胞成分、结构、功能等的研究的叙述正确的为:①活细胞中数量最多的元素为O②恩格尔曼实验的目的是证明光合作用产生O2③细胞膜的磷脂双分子层在电镜下清晰可见④“分泌蛋白的合成、加工、运输、分泌”实验中,实验材料亮氨酸中的N被15N标记⑤细胞中有原癌基因,则说明该细胞为癌细胞⑥有氧呼吸、无氧呼吸第一阶段相同,都产生少量的[H],且这些[H]还原的底物也相同A. 一项正确B. 二项正确C. 三项正确D. 都不正确4. 下列分别对四幅图的叙述,正确的是:A. 图甲所示细胞应发生了质壁分离,且①指的是细胞质基质、②指的是细胞液B. 图乙中葡萄糖进入该细胞的方式为主动运输,同一载体可以转移不同物质C. 图丙所示曲线表示主动运输的情况,限制运输速度的因素为氧气的浓度D. 图丁装置,倒置漏斗内的液面会先升后降,膀胱膜是该渗透系统的半透膜5. 雄性蓝孔雀屏很大,使其逃避天敌的能力下降,但这一特征对雌孔雀具有吸引力,使大尾屏个体的交配机会增加,并使该性状代代保留。
仁荣中学高三数学综合训练试卷(一)集合的概念与运算
仁荣中学高三数学(理)综合训练试卷(一)集合的概念与运算一、选择题(本题共8道小题,每小题5分,共40分)1.设集合A={2|320x x x -+=},则满足AB={0,1,2}的集合B 的个数是( )A 1B 3C 4D 6 2.已知集合203x M xx -⎧⎫=<⎨⎬+⎩⎭,集合{}23N x x =-≤<,则M N ⋂为A. ()2,3-B. (]3,2--C. [)2,2-D. (]3,3-3.已知集合{sin ,}M y y x x R ==∈,2{0}1xN x Zx -=∈≥+,则M N 为( )A .∅B .(1,1]-C .{1,1}-D .{0,1} 4.设集合A ={x|2≤x <4},B ={x|3x -7≥8-2x},则A ∪B 等于( ). A .{x|3≤x <4} B .{x|x ≥3} C .{x|x >2} D .{x|x ≥2} 5.已知A ={x |x +1>0},B ={-2,-1,0,1},则(∁R A )∩B =( )A .{-2,-1}B .{-2}C .{-1,0,1}D .{0,1} 6.已知集合M={(x ,y )|y =f (x ) },若对于任意11()x ,y M ∈,存在22()x ,y M ∈,使得12120x x y y +=成立,则称集合M 是“垂直对点集.....”.给出下列四个集合: ①M={1()x,y |y x=}; ②M={()1x,y |y sin x =+};③M={2()x,y |y log x =}; ④M={()2x x,y |y e =-}. 其中是“垂直对点集”的序号是 ;7.已知集合{}{|2,|xA x yB y ===,则AB =A.{}|0x x > B {}|0x x ≥C .{}|24x x x ≤≥或 D. {}|024x x x <≤≥或8.设全集R U =,集合{}2|lg(1)M x y x ==-,{}|02N x x =<<,则()U NM =ðA .{}|21x x -≤<B .{}|01x x <≤C .{}|11x x -≤≤D .{}|1x x <二、填空题(本题共6道小题,每小题5分,共30分)9.已知集合2{|log (1)},{|M x y x N x y M N ==-=⋂=则__________ 10.已知集合{3,1,1,2}A =--,集合[0,)B =+∞,则______AB =.11.已知集合2|05x A x x -⎧⎫=<⎨⎬+⎩⎭,{}2|230,B x x x x R =--≥∈,则=B A .(请用区间表示)12.设集合A ={x |xk ∈N},B ={x |0≤x ≤6,x ∈Q},则A ∩B =________. 13.设13521A ,,,,2482n nn -⎧⎫=⎨⎬⎩⎭(),2n N n *∈≥,A n 的所有非空子集中的最小元素的和为S ,则S = .14.若集合A 具有以下性质:①0,1A A ∈∈;②若,x y A ∈,则x y A -∈,且0x ≠时,1A x∈.则称集合A 是“好集”. (l)集合{}1,0,1B =-是好集; (2)有理数集Q 是“好集”;(3)设集合A 是“好集”,若,x y A ∈,则x y A +∈: (4)设集合A 是“好集”,若,x y A ∈,则必有xy A ∈;(5)对任意的一个“好集A ,若,x y A ∈,且0x ≠,则必有yA x∈.则上述命 题正确的有___________.(填序号,多项选择)三、解答题(本题共6道小题,共80分)15.(本小题满分12分)已知集合3|07x A x x -⎧⎫=≤⎨⎬-⎩⎭,{}2|ln +12x 20B x y x ==--(),{}a x a x C <<-=5|(1)求B A ,()B A C R ;(2)若()B A C ⊆,求a 的取值范围.16. (本小题满分14分)记函数)2lg()(2--=x x x f 的定义域为集合A ,函数||3)(x x g -=的定义域为集合B .(1)求A B 和A B ;(2)若A C p x x C ⊆<+=},04|{,求实数p 的取值范围.17. (本小题满分12分)已知}3{},1,13,3{}3,1,{22-=+--=-+=BAaaaBaaA若,求实数a的值.18.(本小题满分14分)已知命题p:A={x|a-1<x<a+1,x∈R},命题q:B={x|x2-4x+3≥0}.(1)若A∩B=∅,A∪B=R,求实数a;(2)若⌝q是p的必要条件,求实数a.19. (本小题满分14分)设函数)32l g(2++-xxy=的定义域为集合A,集合}0|{<-=mxxB(Ⅰ)若∅=BA ,求实数m的取值范围.(Ⅱ)若A≠⊂B,求实数m的取值范围20.(本题满分14分)已知条件p:{}2|230,,x A x x x x R∈=--≤∈条件q:{}22|240,,x B x x mx m x R m R∈=-+-≤∈∈(1)若[]0,3A B =,求实数m的值;(2)若p是q⌝的充分条件,求实数m的取值范围.试卷答案1.C2.C3.A4.B5.A6.②④7.B8.B9.(1,3] 10.11.(]5,1-- 12.{}641,,13.⎪⎩⎪⎨⎧∈≥-=*2,3,212,47N n n n n14.15.(1){}102|<<=x x B A ,(){}10732|<≤<<=x x x B A C R 或 ;(2)3≤a16.17.略18.解析 由题意得B ={x |x ≥3或x ≤1},(1)由A ∩B =∅,A ∪B =R ,可知A =∁R B =(1,3),∴⎩⎪⎨⎪⎧a +1=3a -1=1,∴a =2. (2)∵B ={x |x ≥3或x ≤1},∴綈q :{x |1<x <3}. ∴⌝q 是p 的必要条件,即p ⇒⌝ q , ∴A ⊆∁R B =(1,3),∴⎩⎪⎨⎪⎧a +1≤3a -1≥1,∴2≤a ≤2,∴a =2.19.依题意得),(),3,1(m B A -∞=-=(1)1-≤m (2)3≥m 略 20.(Ⅰ)]3 ,1[-=A ,]2 ,2[m m B ++-=,若[]0,3A B =,则⎩⎨⎧≥+=+-3202m m ,故2=m --------------------------7分(Ⅱ)) ,2()2 ,(∞++⋃+--∞=m m B C R ,若⊆A B C R , 则 m +-<23 或 12-<+m , 故 3-<m 或 5>m -------------------------7分。
2016年成达中学高三上期期末考前训练5
2016年成达中学高三上期期末考前训练(5)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,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求。
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.质点做直线运动的速度—时间图像如图所示,该质点( )A.在第1 s 末速度方向发生了改变B.在第2 s 末加速度方向发生了改变C.在前2 s 内发生的位移为零D.第3 s 末和第5 s 末的位置相同15、如图所示,固定斜面C 上有A 和B 两个物体一起相对静止地沿斜面匀速下滑,请分析A 、B 两个物体受力的个数分别为( )A .3个,4个B .3个,5个C .3个,6个D .4个,5个16、如图甲所示,AB 是电场中的一条电场线,质子以某一初速度从A 点出发,仅在电场力作用下沿直线从A 点运动到B 点,其v ﹣t 图象如图乙所示,则下列说法正确的是( ) A .质子运动的加速度随时间逐渐增大B .电场线的方向由B 指向AC .质子的电势能减小D .A 、B 两点电场强度的大小关系满足E A <E B17、一物体静止在粗糙水平地面上,现用一大小为F 1的水平拉力拉动物体,经过一段时间后其速度变为v,若将水平拉力的大小改为F 2,物体从静止开始经过同样的时间后速度变为2v,对于上述两个过程,用W F1、W F2分别表示拉力F 1、F 2所做的功,W f1、W f2分别表示前后两次克服摩擦力所做的功,则( )A.W F2>4W F1,W f2>2W f1B.W F2>4W F1,W f2=2W f1C.W F2<4W F1,W f2=2W f1D.W F2<4W F1,W f2<2W f118、质量为m 的人在地球卫星与地心的距离为r 时,引力势能可表示为rGMmE p -=,其中G 为引力常量,M 为地球质量。
该卫星原来在半径为R 1的轨道上绕地球做匀速圆周运动,由于受到极稀薄空气的摩擦作用,飞行一段时间后圆周运动的半径为R 2,此过程产生的热量为( )A 、)11(12R R GMm - B 、)11(21R R GMm - C 、)11(212R R GMm - D 、)11(221R R GMm - 19、如图所示,电源输入电压不变,要使电路中电流表示数变大,可采用的方法有A.将R 上的滑片向上移动 B.将R 上的滑片向下移动 C.将电键S 掷向1 D.将电键S 掷向220、如图甲为应用于机场和火车站的安全检查仪,用于对旅客的行李进行安全检查。
达仁中学2016年春季高三模拟试题 6
2016年5月达仁中学高三英语模拟试题 6(时间:100分钟;满分120分)第一部分阅读理解(共两节,满分40分)第一节(共15小题,每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。
AWhen I told my father that I was moving to Des Moines, Iowa, he told me about the only time he had been there. It was in the 1930s, when he was an editor in the literary magazine of Southern Methodist University (SMU) in Dallas, Texas. He also worked as a professor at SMU, and there was a girl student in his class who suffered from a serious back disease. She couldn’t afford the operation because her family was poor.Her mother ran a boardinghouse in Galveston, a seaside town near Houston, Texas. She was cleaning out the attic (阁楼) one day when she came across an old dusty manuscript (手稿). On its top page were the words, “By O. Henry”. It was a nice story, and she sent it to her daughter at SMU, who showed it to my father. My father had never read the story before, but it sounded like O. Henry, and he knew that O. Henry had once lived in Houston. So it was possible that the famous author had gone to the beach and stayed in the Galveston boardinghouse, and had written the story there and left the manuscript behind by accident. My father visited an O. Henry expert at Columbia University in New York, who authenticated the story as O. Henry’s.My father then set out to sell it. Eventfully, he found himself in Des Moines, meeting with Gardner Cowles, a top editor at the Des Moines Register. Cowles loved the story and bought it on the spot. My father took the money to the girl. It was just enough for her to have the operation she so desperately needed.My father never told me what the O. Henry story was about. But I doubt that it could have been better than his own story.21. Who found the O. Henry’s manuscript?A. The girl’s mother.B. The author’s father.C. The girl.D. The author.22. Which of the following might explain the fact that the manuscript was found in the attic?A. O. Henry once worked in Houston.B. O. Henry once stayed in Galveston.C. O. Henry once moved to Des Moines.D. O. Henry once taught at SMU.23. The underlined word “authenticated” in Paragraph 2 probably means __________.A. namedB. treatedC. provedD. described24. According to the text, why did the author’s father go to Des Moines?A. To sell the O. Henry story.B. To meet the author himself.C. To talk with the O. Henry expert.D. To give money to the girl.BThe Calgary Public Library has some great resources to beat boredom and keep your children busy over the summer, whether at home or on the road.During the school year children are busy with homework and required reading, so summer is a great time for them to relax and read what they choose. Not only is reading a pleasurable way to pass the time, it will also help children keep their skills up over the summer, so they are prepared to go back to school in the fall.If you are taking a trip this summer, why not let the kids help out with the planning? Borrow achildren’s atlas (地图集) to choose your way together and check out some books about your destination before departure. The All about Provinces and Territories series is full of interesting facts about each Canadian province.Going camping? How about taking along some scary stories to tell around the campfire? Alvin Schwarz’s collections of Scary Tales to Tell in the Dark are sure to make your spine tingle and your teeth chatter. For something a little less horrible, try Velcome: a Very Scary Book, by Kevin O’Malley, which includes such horrors as a plate of mixed vegetables!Remember to lead by example and pack a book in your own beach bag. If children see you reading, they will understand that books are an important and valuable part of summer and they will begin to copy your habits!The staff at the Calgary Public Library are always happy to help find that perfect summer read, so stop by your nearest branch, call us at 260-2600, or visit our website at Calgary public library. com today.25. What can we infer from the second paragraph of the passage?A. Summer is the only time for children to relax themselves.B. Children have little time to read what they choose at school.C. Children usually get bored of reading during the school year.D. Required reading prepares children to go back to school in the fall.26. If you want your children to have a good knowledge of Canada before a trip, you had better refer to ___.A. All about Provinces and TerritoriesB. Scary Tales to Tell in the DarkC. Velcome: a Very Scary BookD. A Children’s Atlas27. What’s the probable meaning of the underlined part “to make your spine tingle and your teeth chatter”in Paragraph 4?A. To interest you and impress you.B. To excite you and frighten you.C. To embarrass you and annoy you.D. To discourage you and disgust you.28. You should take a book with you to _________.A. save your own timeB. enjoy your summer holidayC. set a good example to your childrenD. follow your children’s good habitsCYou are the collector in the gallery of your life. You collect. You might not mean to but you do. One out of three people collects tangible (有形的) things such as cats, photos and noisy toys.These are among some 40 collections that are being shown at “The Museum Of”—the first of several new museums which, over the next two years, will exhibit the objects accumulated by unknown collectors. In doing so, they will promote a popular culture of museums, not what museums normally represent.Some of the collections are fairly common—records, model houses. Others are strangely beautiful—branches that have fallen from trees, for example. But they all reveal (显露) a lot of things: ask someone what they collect and their answers will tell you who they are.Other on the way include “The museum of Collectors” and “The Museum of Me”. These new ones, it is hoped, will build on the success of “The Museum Of”. The thinkers behind the project want to explore why people collect, and what it means to do so. They hope that visitors who may not have considered themselves collectors will begin to see they, too, collect.Some collectors say they started or stopped making collections at important point: the beginning or end of adolescence—“it’s a growing-up thing; you stop when you grow up,” says one. Other painful times are mentioned, such as the end of a relationship. For time and life can seem so uncontrollable that a steady serial (顺序排列的) arrangement is comforting.29. How will the new museums promote a popular culture of museums?A. By collecting more tangible things.B. By showing what ordinary people have collected.C. By correcting what museums normally represent.D. By accumulating 40 collections two years from now.30. What can be learned about collectors from their collections?A. Who they are.B. How old they are.C. Where they were born.D. Why they might not mean to collect.31. Which of the following is an aim of the new museums?A. To help people sell their collections.B. To encourage more people to collect.C. To study the significance of collecting.D. To find out why people visit museums.32. According to the last paragraph, people may stop collecting when they _______.A. become adultsB. feel happy with lifeC. are ready for a relationshipD. feel time to he uncontrollableDThe National GalleryDescription:The National Gallery is the British national art museum built on the north side of Trafalgar Square in London.It houses a diverse collection of more than 2,300 examples of European art ranging from 13th-century religious paintings to more modern ones by Renoir and Van Gogh.The older collections of the gallery are reached through the main entrance while the more modern works in the East Wing are most easily reached from Trafalgar Square by a ground floor entranceLayout:The modern Sainsbury Wing on the western side of the building houses 13th- to 15th-century paintings, and artists include Duccio, Uccello, Van Eyck, Lippi, Mantegna, Botticelli and Memling.The main West Wing houses 16th-century paintings, and artists include Leonardo da Vinci, Cranach, Michelangelo, Raphael, Bruegel, Bronzino, Titan and Veronese.The North Wing houses 17th-century paintings, and artists include Caravaggio, Rubens, Poussin, Van Dyck, Velazquez, Claude and Vermeer.The East Wing houses 18th-to early 20th-century paintings, and artists include Canaletto, Goya, Turner, Constable, Renoir and Van Gogh.Opening Hours:The Gallery is open every day from 10 am to 6 pm (Fridays 10 am to 9 pm) and is free, but charges apply to some special exhibitions.Getting There:Nearest underground stations:Charing Cross (2-minute walk), Leicester Square (3-minute walk), Embankment (7-minute walk), and Piccadilly Circus (8-minute walk).(221)33. In which century’s collection can you see religious paintings?A. The 13th.B. The 17th.C. The 18th.D. The 20th.34. Where are Leonardo da Vinci’s work s shown?A. In the East Wing.B. In the main West Wing.C. In the Sainsbury Wing.D. In the North Wing.35. Which underground station is closest to the National Gallery?A. Piccadilly Circus.B. Leicester Square.C. Embankment.D. Charing Cross.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。
四川省达州市达川中学高三地理模拟试题含解析
四川省达州市达川中学高三地理模拟试题含解析一、选择题(每小题2分,共52分)1. 下图为120°E和60°W组成经线圈的海陆分布示意图(实线段为陆地,虚线为海洋,字母表示各地),读图回答关于甲、乙、丙、丁四地主要农业地域类型的生产条件和生产特点的叙述正确的是A.甲地区自然条件优越,农产品商品率高B.乙地区农场规模大,机械化水平高C.丙地区土地广阔,灌溉水源充足D.丁地区牧场广阔,以牧牛为主参考答案:D2. 在图2所示的城市群内,既有大城市,又有中等城市和众多的小城市。
其特点是把大城市多种职能分散到中、小城市。
城市之间的距离10——20千米,以快速交通网络连接。
城市和交通线间是面积约400平方千米的绿色沼泽和农业用地,被称为“绿色心脏”。
据此读图完成2——3题。
2.该城市群发展的优势条件为①位置优越,商贸发达②交通便利,协作紧密③地势低洼,峡湾众多④河网密布,水能丰富A. ①②B.②③C.③④D.④①3.位于该城市群的“绿色心脏”的功能为A. 粮食供给基地B. 改善城间环境C. 缓解海水入侵D.提供生活水源参考答案:2.A3.B【知识点】本题考查城市群发展优势分析、城市功能。
解析:2题,根据图中信息和文本信息可知,该城市群位于欧洲西部,沿海有优良的港口,内陆有便捷的交通网,地理位置优越,交通便利,经济发达,A正确。
3题,城市和交通线间的面积约400平方千米的绿色沼泽和农业用地,主要是一种隔离带,目的是吸烟滞尘、净化空气、美化环境,起到改善城间环境的作用,B正确。
【思路点拨】本题对图表及文本信息解读能力要求较高,另外隔离带作用也是常考的知识点,不同地区的隔离带起到的作用不同,例如城市中心隔离带、城市周边隔离带、绿洲与沙漠之间的隔离带等,作用各不相同,要注意灵活分析。
3. 浙江在线2007年8月26日讯:为了防止咸潮的影响,从昨天起,西湖暂停从钱塘江引水。
而这样的状况,预计持续到9月1日。
2016届人大附中高三理科综合能力测试答案
2016届人大附中高三理科综合能力测试(一)2015年12月12日物理参考答案13 C 14 B 15A 16D 17A 18D 19A 20A21.(1)偏小,甲(2)①0.42A(0.38A ~0.42A 都正确) (2分)②如图乙所示 (4分) ③如图丙所示 (2分) ④W 28.0( W 25.0~W 32.0都正确) (2分)22.第21题图(丙)23.【答案】(1)1.5A;0.3N(2)0.16N,0.18N (3)2/3T 方向水平向右24【答案】(1)v0=3m/s(2)E1=1.875N/C v =4m/s (3)试题分析:(1)液滴在x>0的区域内受竖直向下的重力和水平向右的电场力的作用。
液滴在竖直方向上做自由落体运动:v=gt………v =4m/s…………液滴在水平方向上做匀减速运动v0=at E1q=ma…………E1=1.875N/C2016届人大附中高三理科综合能力测试(一)2015年12月12日化学参考答案未注明的每空2分25.(16分)(1)羟基、羧基(每个2分)(2)C7H12O6(3),消去(4)(5)① 6②(或)26.(13分)(1)3NO2 + H2O =2HNO3 + NO催化剂(2)2CO + 2NO 2CO2 + N2(3)SO2 + NH3·H2O = HSO3-+ NH4+2NO2 + 4HSO3-= N2 + 4SO42-+ 4H+(4)①正极(1分),SO2 + 2H2O – 2e-=SO42-+ 4H+②1:227. (14分)(1)Fe + 2H+ = Fe2+ + H2↑ 2Fe3+ + Fe = 3Fe2+(每个方程式2分,共4分)(2)4.4—7.5(3)Fe2+ + NO2- + 2H+ = Fe3++ NO↑ + H2O(4)4(5)体系中存在Fe3+ + 3H2O Fe(OH)3 + 3H+,硫酸加入量过小,平衡右移,生成氢氧化铁沉淀;硫酸加入量过大,平衡左移,不易形成产品(6)2Fe(OH)2+ + 2H2O Fe2(OH)42+ + 2H+28.(15分)(1)还原性(1分)(2)① 6H+ + Al2O3 = 2Al3+ + 3H2O② a. NO2b. 对比实验,排除氧气使湿润的淀粉KI试纸变蓝的可能c. 1,1,4H+,1,1,2H2O(3)① NH3② 8Al +3NO3-+ 5OH-+ 2H2O = 3NH3↑+ 8AlO2-(4)2Al +2NaOH + 2H2O = 2NaAlO2 + 3H2↑2016届人大附中高三理科综合能力测试(一)2015年12月12日生物参考答案答案和解析:1.B 解析:基因选择性表达仅改变转录出的mRNA种类和翻译的蛋白质种类,不改变DNA 本身结构,所以B错误。
达仁中学2016年春季高三模拟试题 5
2016年5月达仁中学高三模拟考试英语试题 5(时间100分钟;满分120分)第一部分阅读理解(共两节,满分40分)第一节(共15小题,每小题2分,满分30分)阅读下列短文,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。
AOur “Mommy and Me” time began two years ago. My next-door neighbor and fellow mother, Christie, and I were out in our front yards, watching seven children of age 6 and under ride their bikes up and down. “I wish I could take one of my children out alone,” said Christie.Then we worked out a plan: When Christie takes one of her children out, I’ll watch her other three. And when she watches two of mine, I’ll take someone out.The children were extremely quick to accept the idea of “Mommy and Me”time. Christie’s daughter, McKenzie, went first. When she returned, the other children showered her with tons of questions. McKenzie was smiling broadly. Christie looked refreshed and happy. “She’s like a different child when there’s no one else around,” Christie shared with me quickly. With her mother all to herself, McKenzie didn’t have to make an effort to gain attention.Just as Christie had noticed changes in McKenzie, I also discovered something different in each of my children during our alone times. For example, I am always surprised when my daughter, who is seldom close to me, holds my hand frequently. My stuttering(口吃的)son, Tom, doesn’t stutter once during our activities since he doesn’t have to struggle for a chance to speak. And the other son, Sam, who’s always a follower when around other children shines as a leader during our times together.The “Mommy and Me” time allows us to be simply alone and away with each child ---talking, sharing, and laughing, which has been the biggest gain. Every child deserves(应得到) to be an only child at least once in a while.21. What is the text mainly about?A. The experience of the only child being with mother.B. The advantage of spending time with one child at a time.C. The happy life of two families.D. The basic needs of children.22. Right after McKenzie came back, the other children were _____________.A. happyB. curiousC. regretfulD. friendly23. What is one of the changes the author finds in her children?A. The daughter acts like a leader.B. Sam holds her hand more often.C. The boys become better followers.D. Tom has less difficulty in speaking.24. The author seems to believe that ___________.A. having brothers and sisters is funB. it’s tiring to look after three childrenC. every child needs parents’ full attentionD. parents should watch others’ childrenBToo much TV-watching can harm children’s ability to learn and even reduce their chances of getting a college degree, new studies suggest in the latest effort to examine the effects of television on children.One of the studies looked at nearly 400 northern California third-graders. Those with TVs in their bedrooms scored about eight points lower on math and language arts tests than children without bedrooms TVs.A second study, looking at nearly 1,000 grown-ups in New Zealand, found lower education levels among 26-year-olds who had watched lots of TV during childhood. But the results don’t prove that TV is the cause and don’t rule out that already poorly motivated youngsters(年轻人) may watch lots of TV.Their study measured the TV habits of 26-year-olds between ages 5 and 15. Those with college degrees had watched an average of less than two hours of TV per weeknight during childhood, compared with an average of more than 2½ hours for those who had no education beyond high school.In the California study, children with TVs in their rooms but no computer at home scored the lowest, while those with no bedroom TV but who had home computers scored the highest.While this study does not prove that bedroom TV sets caused the lower scores, it adds to accumulating findings that children shouldn’t have TVs in their bedrooms.25. According to the California study, the low-scoring group might____________.A. have watched a lot of TVB. not be interested in mathC. be unable to go to collegeD. have had computers in their bedrooms26. What is the researchers’ understanding of the New Zealand study results?A. Poorly motivated 26-year-olds watch more TV.B. Habits of TV watching reduce learning interest.C. TV watching leads to lower education levels of the 15-year-olds.D. The connection between TV and education levels is difficult to explain.27. What can we learn from the last two paragraphs?A. More time should be spent on computers.B. Children should be forbidden from watching TV.C. TV sets shouldn’t be allowed in children’s bedrooms.D. Further studies on high-achieving students should be done.28. What would be the best title for this text?A. Computers or TelevisionB. Effects of Television on ChildrenC. Studies on TV and College EducationD. Television and Children’s Learning HabitsCThe Book Of LifeSo far, scientists have named about 1.8 million living species(物种), and that’s just a small number of what probably exists on Earth. With so many plants, animal, and other living things covering the planet, it can be tough to figure out what type of grass is growing by the roadside or what kind of bird just flew by.A soon-to-be-started Web site might help. An international term of researchers has announced the creation of Web-based Encyclopedia (百科全书) of Life (EoL). The project aims to list every species on Earth in a single, easy-to-use reference guide.To get the Encyclopedia started, the creators will use information from scientific databases (数据库) that already exist. And eventually, in special sections of the site, non-scientists with specialized knowledge will come to help. Bird-watchers, for example, will be able to input what birds they’ve seen and where. To make sure the Encyclopedia is accurate, scientists will review much of the information added to it.As the EoL develops, you might find it useful for school. Projects, The site will feature (以..为特色) special pages for kids who are studying ecosystems in their neighborhoods. Another convenient feature of the EoL is that you’ll be able to pick the level of detail you want to see to match your interests, age, and knowledge.It now takes years for scientists to collect all the data they need to describes and analyze species. The creators of the Encyclopedia of Life hope that their new fool will speed up that process.29. The Web based EoL aims to .A. fine out what covers the earthB. list all living things on EarthC. work out the number of birdsD. save the existing plants30. One characteristic of the EoL is that .A. it is run by school studentsB. it focuses on different types of grassC. it provides different levels of informationD. it allows non-scientists to review its data31. In the last paragraph, “that process” means .A. analyzing speciesB. creating a new toolC. collecting dataD. describing speciesDKing's College Summer SchoolKing's College Summer School is an annual(每年的) training program for high school students at all levels who want to improve their English. Courses are given by the teachers of King's College and other colleges in New York. Trips to museums and culture centers are also organized. This year's summer school will be from July 25 to August 15.More information is as follows:Application (申请) date● Students in New York should send their applications before July 18, 2007.● Students of other cities should send their applications before July 16, 2007.● Foreign students should send their applications before July 10, 2007.Courses● English LanguageSpoken English: 22 hours Reading and Writing: 10 hours ● American History: 16 hours● American Culture: 16 hoursSteps● A letter of self-introduction● A lett er of recommendation(推荐)﹡The letters should be written in English with all the necessary information.Cost● Daily lessons: $200● Sports and activities: $100● Travels: $200● Hotel service: $400﹡You may choose to live with your friends or relatives in the same city.Please write to: Thompson, Sanders1026 King' s Street New York, NY 10016, USAE-mail: KC-Summer-School@ yahoo, com32. Y ou can most probably read the text in .A. a newspaperB. a travel guideC. a textbookD. a telephone book33. Which of the following is true about King's College Summer School?A. Only top students can take part in the program.B. King’s College Summer School is run every other year.C. Visits to museums and culture centers are part of the program.D. Only the teachers of King' s College give courses.34. If you are to live with your relatives in New Y ork, you will have to pay the school .A. $200B. $400C. $500D. $90035. What information can you get from the text?A. The program will last two months.B. Y ou can write to Thompson only in English.C. As a Chinese student, you can send your application on July 14, 2007.D. Y ou can get in touch with the school by e-mail or by telephone.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。
四川省达州市通川区铭仁园中学2016届高三生物上学期第一次月考试卷含解析
2015-2016学年四川省达州市通川区铭仁园中学高三(上)第一次月考生物试卷一、单项选择题(每个2分,共50分)1.如图是电子显微镜视野中观察某细胞的一部分,下列有关该细胞叙述中,错误的是( )A.结构1和5中含有DNAB.结构1和3在行使其功能时一定有水生成C.不含磷脂分子的细胞器是2和3D.健那绿染色后,光学显微镜下可观察到1的结构2.下列各项的结果中,不可能出现 3:1 比值的是( )A.酵母菌有氧呼吸与无氧呼吸消耗等量葡萄糖时产生的CO2之比B.孟德尔在一对相对性状杂交实验中F2的性状分离之比C.三肽形成过程中所需的氨基酸数和形成的肽键数之比D.动物的一个卵原细胞经减数分裂形成的极体与卵细胞的数目之比3.在水稻根尖成熟区表皮细胞中能正常完成的生理活动有( )①核DNA→核DNA ②合成RNA聚合酶③mRNA→蛋白质④RNA→DNA⑤染色质→染色体⑥[H]+O2→H2O ⑦H2O→[H]+O2.A.①②③⑦ B.②④⑥C.③⑤⑥D.②③⑥4.分析如图多肽的结构,下列说法正确的是( )A.该化合物有5个游离氨基、4个游离羧基B.该多肽中含有5个肽键、4个R基团C.假定一个由n个氨基酸构成的含m条肽链的蛋白质分子,氨基酸平均相对分子质量为a,那么,这个蛋白质分子的相对分子质量表达式是na﹣18(n﹣m)D.组成该化合物的氨基酸有5种5.如图表示人体内氧元素随化合物代谢转移过程,下列分析合理的是( )A.①过程发生在核糖体中,水中的H只来自于一NH2B.在缺氧的情况下,③过程中不会发生脱氢反应C.M物质是丙酮酸,④过程不会发生在线粒体中D.在氧气充足的情况下,②③过程发生于线粒体中6.下面是以小麦为实验材料所进行的实验,其中叙述正确的是( )A.将发芽的种子研磨液置于试管内,加入斐林试剂,试管内立即呈现砖红色沉淀,这是因为发芽的小麦种子中含有还原性糖B.用甲基绿、吡罗红混合染色剂对小麦叶肉细胞染色观察DNA和RNA在细胞中的分布C.用显微镜观察小麦根尖成熟区表皮细胞,可观察到有丝分裂的图象,从而判断出每个细胞中的染色体数目D.若利用小麦根毛细胞进行质壁分离实验,为了取得更好的观察效果,调节显微镜的措施是缩小光圈或换平面反光镜7.将人类的红细胞置于不同浓度的蔗糖溶液中,浸泡半小时之后的结果如图,依照细胞外形的变化判断蔗糖溶液的浓度,由高到低排列,正确的是( )A.甲>乙>丙>丁B.丁>甲>乙>丙 C.丙>丁>甲>乙D.丙>乙>丁>甲8.如图为氨基酸和Na+进出肾小管上皮细胞的示意图,下表选项中正确的是( )选项管腔中氨基酸→上皮细胞管腔中Na+→上皮细胞上皮细胞中氨基酸→组织液A 主动运输被动运输主动运输B 被动运输被动运输被动运输C 被动运输主动运输被动运输D 主动运输被动运输被动运输A.A B.B C.C D.D9.“同位素标记法”是研究某些生命活动的重要方法.下列说法正确的是( )A.用35S标记噬菌体,35S出现在氨基酸的R基中B.用18O同时标记CO2和H2O,验证光合作用释放的O2来自H2OC.用3H标记核苷酸,揭示合成的分泌蛋白运输到细胞外的过程D.给豚鼠供应18O2,有氧呼吸的产物中有H218O,不可能有C18O210.将一些苹果储藏在密闭容器中,通入不同浓度的氧气后,其氧气的消耗量和二氧化碳产生量如下表所示.下列分析正确的是( )(假设细胞呼吸的底物都是葡萄糖)氧浓度(%) a b c d eCO2产生量(mol/min) 1.2 1.0 1.3 1.6 3.0O2消耗量(mol/min)0 0.6 0.7 1.2 3.0A.氧浓度为a时,细胞呼吸不在线粒体中进行;氧浓度为e时,细胞呼吸只在线粒体中进行B.氧浓度为b时,葡萄糖的消耗量为0.3mol/min,较适宜苹果的储藏C.氧浓度为c时,酒精发酵消耗葡萄糖的量为0.6mol/minD.氧浓度为d时,产生的二氧化碳中有来自酒精发酵11.甲种子萌发时释放CO2的量大于吸入O2的量,乙种子萌发时吸入O2的量大于释放CO2的量,最可能的原因是( )A.甲的呼吸底物有糖类和脂肪,乙的呼吸类型为有氧呼吸和无氧呼吸并存B.甲的呼吸类型为有氧呼吸和无氧呼吸并存,乙的呼吸底物有糖类和脂肪C.甲的无氧呼吸强度大于有氧呼吸强度,乙的呼吸消耗脂肪的量大于糖类D.甲的呼吸消耗脂肪的量大于糖类,乙的无氧呼吸强度大于有氧呼吸强度12.酵母菌在有氧的条件下进行需氧呼吸,在无氧条件下能进行厌氧呼吸产生酒精.如果如果在有氧呼吸和无氧呼吸中,它们产生CO2的比为2:1,那么它在这两种过程中所消耗的葡萄糖之比为( )A.1:2 B.2:1 C.3:2 D.2:313.图甲表示水稻的叶肉细胞在光照强度分别为a、b、c、d时,单位时间内CO2释放量和O2产生总量的变化.图乙表示水稻CO2吸收速率与光照强度的关系.有关说法正确的是( )A.图甲中,光照强度为b时,光合作用速率等于呼吸作用速率B.图甲中,光照强度为d时,单位时间内细胞从周围吸收2个单位的CO2C.图甲中的c点和图乙中的h点对应D.图乙中,限制e、f、g点光合作用速率的因素主要是光照强度14.将某绿色植物放在特定的实验装置中,研究温度对光合作用与呼吸作用的影响(其余的实验条件都是理想的),实验以CO2的吸收量与释放量为指标.实验结果如表所示:温度(℃) 5 10 15 20 25 30 35光照下吸收CO2(mg/h) 1.00 1.75 2.50 3.25 3.75 3.50 3.00黑暗下释放CO2(mg/h)0.50 0.75 1.00 1.50 2.25 3.00 3.50下列对该表数据分析正确的是( )A.昼夜不停地光照,温度在35℃时该植物不能生长B.每天交替进行12小时光照、12小时黑暗,温度均保持在25℃的条件下,该植物积累的有机物最多C.昼夜不停地光照,该植物生长的最适宜温度是30℃D.每天进行14小时光照,温度在30℃时,该植物积累的有机物是温度在35℃时的2.71倍15.在外界环境条件恒定时,用如图装置测定种子萌发时的呼吸作用类型(假设呼吸底物全部为葡萄糖),实验开始同时关闭两装置活塞,在25℃下经过20min后观察红色液滴移动情况,下列对实验结果的分析错误的是( )A.若装置1的红色液滴左移,装置2的红色液滴不移动,则说明此时萌发的种子只进行有氧呼吸B.若装置1的红色液滴左移,装置2的红色液滴右移,则说明此时萌发的种子既进行有氧呼吸又进行无氧呼吸C.装置1的红色液滴向左移动的体积是呼吸作用消耗O2的体积D.装置2的红色液滴向右移动的体积是呼吸作用释放CO2的体积16.如图是某XY型性别决定的二倍体生物体内的细胞分裂过程中物质或结构变化的相关模式图.对图的分析错误的是( )A.如果图甲中的细胞来自于动物的同一器官,则最可能是来自于雄性动物的精巢B.在图甲②所代表的细胞分裂的全过程中,通常会发生的可遗传变异是基因重组C.图丙中②→①的变化,对应于图甲中形成①细胞的过程和图乙中的C→D段时期D.若该动物的成熟生殖细胞中有XY,变异通常发生在图乙中的BC段所代表的时期17.用32P标记玉米体细胞(含20条染色体)的DNA分子双链,再将这些细胞转入不含32P的培养基中培养,在二次细胞分裂后的一个细胞中,被32P标记的染色体条数最可能是( )A.0条B.20条以下C.20条D.20条以上18.图甲是高等动物(2N)细胞亚显微结构示意图,图乙是该动物体内5个不同时期细胞分裂图.下列叙述有误的是( )A.若图甲是该动物的睾丸细胞,则该细胞可能会发生类似于图乙中ABCDE所示的分裂图象B.图甲细胞在发生分裂时,参与分裂过程的细胞器有①②⑧C.如果乙图中分裂的细胞没有发生基因突变,则图中使复制后相同基因分开的是B、C细胞分裂图象D.基因重组和基因分离的时期是乙图中A、E和C,C、D细胞都含有两个染色体组19.两株高茎豌豆杂交,后代既有高茎又有矮茎,让子代高茎豌豆全部自交,则自交后代性状分离比为( )A.3:1 B.1:1 C.9:7 D.5:120.种植基因型为AA和Aa的豌豆,两者数量之比是1:3.自然状态下(假设结实率相同),其子代中基因型为AA、Aa、aa的数量之比为( )A.7:6:3 B.5:2:1 C.3:2:1 D.1:2:121.白斑银狐是灰色银狐中的一种变种,在灰色背景上出现臼色的斑点,十分漂亮.让白斑银狐自由交配,后代中总会出现约的灰色银狐,其余均为白斑银狐.由此推断合理的是( )A.可以利交测交的方法获得纯种白斑银狐B.后代灰色银狐中既有杂合子又有纯台子C.白斑银狐后代出现灰色银狐是由基因突变所致D.白斑银狐与灰色银狐交配,后代中白斑银狐约占22.如图为舞蹈症家系图,下列分析正确的是( )A.舞蹈症为伴X染色体显性基因控制的遗传B.若图中7和10婚配,生一个患舞蹈症孩子的概率为正常C.图中6号可携带该致病基因正常D.若图中3号与正常男性结婚,建议生女孩23.依次解决①﹣﹣④中的遗传问题可采用的方法是( )①鉴定一只白羊是否是纯种②在一对相对性状中区分显隐性③不断提高小麦抗病品种的纯度④检验杂种F1基因型.A.测交、杂交、自交、测交B.杂交、自交、测交、测交C.杂交、测交、杂交、自交D.杂交、杂交、杂交、测交24.在阿拉伯牵牛花的遗传实验中,用纯合体红色牵牛花和纯合体白色牵牛花杂交,F1全是粉红色牵牛花.将F1自交后,F2中出现红色、粉红色和白色三种类型的牵牛花,比例为1:2:1,如果将F2中的所有粉红色的牵牛花和红色的牵牛花均匀混合种植,进行自由授粉,则后代应为( )A.红色:粉红:白色=1:2:1 B.粉红:红色=1:1C.红色:白色=3:1 D.红色:粉红:白色=4:4:125.某种植物的花色受一组复等位基因的控制,纯合子和杂合子的表现型如右表,若W P W S与W S w杂交,子代表现型的种类及比例分别是( )纯合子杂合子WW 红色W与任一等位基因红色ww 纯白色W p与W s、w 红斑白花W s W s红条白花W s w 红条白花W p W p红斑白花A.3种,2:1:1 B.4种,1:1:1:1 C.2种,1:1 D.2种,3:1二、非选择题(共50分)26.(14分)甲细胞可产生抗体,乙表示正在出芽的酵母菌.(1)上述细胞的结构中,属于细胞代谢和遗传控制中心的是[__________]__________;甲细胞可以由__________分化而来.按顺序写出抗体合成与分泌过程中经过的细胞结构:__________(用数字标号和箭头表示).(2)酵母菌产生酒精的场所是__________,能产生CO2的场所是__________.(上述两空填写数字符号).(3)甲细胞比乙细胞代谢速率快,从结构方面找出一条原因:__________.(4)从甲细胞[5]结构上提取了某种物质,用非酶法处理后,加入双缩脲试剂出现紫色;若加入斐林或班氏试剂并加热,出现砖红色沉淀,则说明该物质是__________;此物质的存在体现了[5]结构具有__________的功能.27.在一定实验条件下,测得某植物光合作用速率与光照强度之间的关系及光合作用速率和呼吸速率与温度之间的关系如图所示,请据图回答下列问题:(1)影响图甲中a曲线A点上下移动的外界因素主要是__________,C点时每小时合成的葡萄糖的量为__________克;图乙中细胞呼吸有关曲线的数据需在__________条件下测量.(2)由图可知,40℃时,植物体__________(填“能”或“不能”)显示生长现象;而5℃时的状态可用图甲中__________(填“A、B”或“C”)点表示.(3)用大棚种植蔬菜时,白天应控制光强为__________点对应的光照强度,温度为__________℃最佳.(4)请在乙图中画出该植物的净产量(CO2吸收量)随温度变化的曲线图.(5)如果用如图丙所示的装置来探究光照强度和光合作用速率的关系,且测量指标为装置中O2含量的变化,则该装置需要进行适当修改,具体修改措施是__________,修改后该装置测定的数据表示该实验条件下光合作用的__________;为使测得O2的变化量更精确,还应再设量对照装置,该装置的容器和小烧杯中应分别放入__________.28.(14分)下列是二倍体生物细胞分裂的相关信息,请据图分析回答下列问题.(1)图1中A1B1段形成的原因是__________.基因突变最可能发生在图1中的__________段.(2)图5细胞对应于图2中的__________段(填字母).D2E2染色体的行为变化,与图1中的__________段变化相同.(3)雄性激素能促进图3~图5中的哪一个细胞的形成?__________.图5子细胞的名称为__________.(4)图3细胞中有__________对同源染色体,__________个染色体组,①和⑤在前一时期是两条__________.(5)若图1纵坐标表示细胞周期中细胞的DNA数,则图3~图5中__________细胞的DNA含量与图1中D1E1段相等.29.以下是某遗传病的系谱图(受基因A、a控制).根据图回答:(1)该病是由__________性基因控制的.(2)Ⅰ2、Ⅱ5的基因型分别是__________和__________.(3)Ⅳ13的基因型是__________.(4)Ⅲ10为纯合子的概率为__________.(5)Ⅲ11、Ⅳ13的基因型相同的概率是__________.(6)Ⅲ代中,9与11是__________,婚姻法规定不能结婚.若结婚生育,则患该遗传病的概率为__________.2015-2016学年四川省达州市通川区铭仁园中学高三(上)第一次月考生物试卷一、单项选择题(每个2分,共50分)1.如图是电子显微镜视野中观察某细胞的一部分,下列有关该细胞叙述中,错误的是( )A.结构1和5中含有DNAB.结构1和3在行使其功能时一定有水生成C.不含磷脂分子的细胞器是2和3D.健那绿染色后,光学显微镜下可观察到1的结构【考点】原核细胞和真核细胞的形态和结构的异同.【分析】本题主要考查各种细胞结构的结构和功能.由图可知:1为线粒体,2为中心体,3为核糖体,4为高尔基体,5为细胞核.双层膜的结构有线粒体、叶绿体和细胞核(不是细胞器).无膜的细胞器为核糖体和中心体.单层膜的细胞器为内质网、高尔基体、液泡和溶酶体.【解答】解:A、DNA主要存在于5细胞核中,少量分布在1线粒体中,A正确;B、有氧呼吸的第三阶段([H]+O2→H2O)发生在1线粒体内膜上,氨基酸脱水缩合成蛋白质的过程发生在3核糖体中,B正确;C、2中心体和3核糖体为无膜的细胞器,不含磷脂分子,C正确;D、1线粒体被健那绿染色后呈蓝绿色,但在光学显微镜下观察不到1线粒体的结构,必需在电子显微镜下才能看到,D错误.故选:D.【点评】本题考查了学生对各种细胞器功能的理解和辨析.可以进行归类记忆:与能量转换有关的细胞器:线粒体和叶绿体;含DNA的细胞器:线粒体和叶绿体;含色素的细胞器:叶绿体和液泡;植物特有的细胞器:叶绿体和液泡;动植物都有但功能不同的细胞器:高尔基体;与分泌蛋白合成和分泌有关的细胞器:核糖体、内质网、高尔基体、线粒体;与细胞有丝分裂有关的细胞器:核糖体、线粒体、中心体(动物细胞和低等植物细胞)、高尔基体(植物细胞).2.下列各项的结果中,不可能出现 3:1 比值的是( )A.酵母菌有氧呼吸与无氧呼吸消耗等量葡萄糖时产生的CO2之比B.孟德尔在一对相对性状杂交实验中F2的性状分离之比C.三肽形成过程中所需的氨基酸数和形成的肽键数之比D.动物的一个卵原细胞经减数分裂形成的极体与卵细胞的数目之比【考点】蛋白质的合成——氨基酸脱水缩合;有氧呼吸的过程和意义;无氧呼吸的概念与过程;卵细胞的形成过程;孟德尔遗传实验.【分析】酵母菌有氧呼吸的反应式是C6H12O6+6O2+6H2O→6CO2+12H2O+能量;无氧呼吸反应式是C6H12O6→2CO2+2C2H5OH+少量能量;孟德尔在一对相对性状的杂交实验中,F2代的性状分离比为3:1;在两对相对性状的杂交实验中,F2代的分离比是9:3:3:1;蛋白质合成过程是氨基酸脱水缩合的过程,n肽需要n个氨基酸脱去n﹣1个水,形成n﹣1个肽腱,据此分析解答.【解答】解:A、酵母菌进行有氧呼吸时消耗1摩尔葡萄糖生成6摩尔二氧化碳,而进行无氧呼吸时消耗1摩尔葡萄糖生成2摩尔二氧化碳,A不符合题意;B、孟德尔在一对相对性状的杂交实验中,F2代的性状分离比为3:1,B不符合题意;C、三肽形成过程中需要3个氨基酸,形成2个肽键,C符合题意;D、一个卵原细胞经过减数分裂形成3个极体和1个卵细胞,D不符合题意.故选:C【点评】本题考查细胞呼吸、分离定律、蛋白质和减数分裂的有关知识,意在考查考生理解所学知识的要点,把握知识间的内在联系的能力;能用文字、图表以及数学方式等多种表达形式准确地描述生物学方面的内容.3.在水稻根尖成熟区表皮细胞中能正常完成的生理活动有( )①核DNA→核DNA ②合成RNA聚合酶③mRNA→蛋白质④RNA→DNA⑤染色质→染色体⑥[H]+O2→H2O ⑦H2O→[H]+O2.A.①②③⑦ B.②④⑥C.③⑤⑥D.②③⑥【考点】遗传信息的转录和翻译;细胞呼吸的过程和意义.【分析】水稻根尖成熟区表皮细胞已经高度分化,不再分裂;水稻根尖成熟区表皮细胞不含叶绿体,不能进行光合作用;但水稻根尖成熟区表皮细胞能进行有氧呼吸,能转录和翻译形成蛋白质,也能通过主动运输方式吸收矿质离子等,此外该细胞含有大液泡,能通过渗透作用吸水.据此答题.【解答】解:①水稻根尖成熟区表皮细胞已经高度分化,不再分裂,因此不会发生核DNA→核DNA,①错误;②几乎所有的细胞都能合成合成RNA聚合酶,②正确;③几乎所有的细胞都能合成蛋白质,因此会发生mRNA→蛋白质,③正确;④RNA→DNA表示逆转录过程,只发生在被少数病毒侵染的细胞中,④错误;⑤水稻根尖成熟区表皮细胞已经高度分化,不再分裂,因此不会出现染色质→染色体,⑤错误;⑥水稻根尖成熟区表皮细胞能进行有氧呼吸,因此可以发生[H]+O2→H2O,⑥正确;⑦水稻根尖成熟区表皮细胞不能进行光合作用,因此不会发生H2O→[H]+O2,⑦错误.综合以上可知,②③⑥正确.故选:D.【点评】本题综合考查细胞分裂、细胞呼吸、光合作用、遗传信息的转录和翻译等知识,要求考生识记细胞分裂的特点;识记细胞呼吸和光合作用的过程;识记遗传信息的转录和翻译过程,能运用所学的知识准确判断各选项.4.分析如图多肽的结构,下列说法正确的是( )A.该化合物有5个游离氨基、4个游离羧基B.该多肽中含有5个肽键、4个R基团C.假定一个由n个氨基酸构成的含m条肽链的蛋白质分子,氨基酸平均相对分子质量为a,那么,这个蛋白质分子的相对分子质量表达式是na﹣18(n﹣m)D.组成该化合物的氨基酸有5种【考点】蛋白质的合成——氨基酸脱水缩合.【分析】1、构成蛋白质的基本单位是氨基酸,其结构通式是,即每种氨基酸分子至少都含有一个氨基和一个羧基,且都有一个氨基和一个羧基连接在同一个碳原子上,这个碳原子还连接一个氢和一个R基,氨基酸的不同在于R基的不同.2、氨基酸通过脱水缩合形成多肽链,而脱水缩合是指一个氨基酸分子的羧基和另一个氨基酸分子的氨基相连接,同时脱出一分子水的过程;氨基酸形成多肽过程中的相关计算:肽键数=脱去水分子数=氨基酸数一肽链数,游离氨基或羧基数=肽链数+R基中含有的氨基或羧基数,蛋白质的相对分子质量=氨基酸数目×氨基酸平均相对分子质量一脱去水分子数×18.3、分析题图:题图为多肽(链状)的结构示意图,其中A是氨基,B、C、D、F、G表示R基,H是羧基.【解答】解:A、题图中该多肽的R基B、C、D、F、G中均不具有氨基(﹣NH2)和羧基(﹣COOH),所以该化合物中含有游离的氨基数=肽链数=1个,含有游离的羧基数=肽链数=1个,A错误;B、该多肽中含有5个R基团(分别为题图中的B、C、D、F、G),含有的肽键数=氨基酸数﹣肽链数=5﹣1=4个,B错误;C、假定一个由n个氨基酸构成的含m条肽链的蛋白质分子,氨基酸平均相对分子质量为a,那么,这个蛋白质分子的相对分子质量=氨基酸数目×氨基酸平均相对分子质量一脱去水分子数×18=n×a﹣(n﹣m)×18=na﹣18(n﹣m),C正确;D、题图中组成该化合物的各氨基酸的R基B、C、D、F、G中,C和D相同(均为﹣H),其它各不相同,即R基共有4种,所以组成该化合物的氨基酸有4种,D错误.故选:C.【点评】本题结合多肽的结构示意图,考查氨基酸的脱水缩合的知识,考生识记氨基酸的结构通式、明确氨基酸脱水缩合的过程、掌握氨基酸脱水缩合过程中的相关计算是解题的关键.5.如图表示人体内氧元素随化合物代谢转移过程,下列分析合理的是( )A.①过程发生在核糖体中,水中的H只来自于一NH2B.在缺氧的情况下,③过程中不会发生脱氢反应C.M物质是丙酮酸,④过程不会发生在线粒体中D.在氧气充足的情况下,②③过程发生于线粒体中【考点】细胞呼吸的过程和意义;蛋白质的合成——氨基酸脱水缩合.【分析】阅读题干和题图可知,本题是细胞呼吸的过程和蛋白质的代谢,根据题图梳理相关的过程和知识点,然后结合选项描述分析判断.【解答】解:A、由题图可知,过程①是氨基酸的脱水缩合,场所是核糖体,水中的H来自于氨基和羧基;A错误.B、由题图可知,过程③糖酵解阶段,有氧、无氧都可发生;B错误.C、由题图可知,M物质是丙酮酸,④过程是无氧呼吸的第二阶段,发生在细胞质基质中,不会发生在线粒体中;C正确.D、由题图可知,过程③糖酵解阶段,发生在细胞质基质中,不发生在线粒体中;D错误.故应选C.【点评】本题的知识点是氨基酸的脱水缩合反应,有氧呼吸和无氧呼吸的具体过程和发生的场所,主要考查学生对脱水缩合反应和细胞呼吸的理解和运用能力.6.下面是以小麦为实验材料所进行的实验,其中叙述正确的是( )A.将发芽的种子研磨液置于试管内,加入斐林试剂,试管内立即呈现砖红色沉淀,这是因为发芽的小麦种子中含有还原性糖B.用甲基绿、吡罗红混合染色剂对小麦叶肉细胞染色观察DNA和RNA在细胞中的分布C.用显微镜观察小麦根尖成熟区表皮细胞,可观察到有丝分裂的图象,从而判断出每个细胞中的染色体数目D.若利用小麦根毛细胞进行质壁分离实验,为了取得更好的观察效果,调节显微镜的措施是缩小光圈或换平面反光镜【考点】观察植物细胞的质壁分离和复原;DNA、RNA在细胞中的分布实验;检测还原糖的实验;观察细胞的有丝分裂.【分析】检测还原糖时,采用斐林试剂,但斐林试剂的使用需要现配现用,且需要水浴加热.甲基绿和吡罗红两种染色剂对DNA和RNA的亲和力不同,利用甲基绿和吡罗红混合染色剂对细胞染色,同时显示DNA和RNA在细胞中的分布,观察的结果是细胞核呈绿色,细胞质呈红色.观察有丝分裂实验应该选择根尖分生区细胞.【解答】解:A、斐林试剂使用时需要水浴加热,A错误;B、利用小麦叶片进行“观察DNA和RNA在细胞中的分布”的实验时,叶片需要用酒精进行脱色处理,实验结果是绿色主要分布在细胞核,红色主要分布在细胞质中,B错误;C、小麦根尖成熟区表皮细胞已经高度分化,不再分裂,不会观察到染色体,C错误;D、用显微镜观察浅色物体时,需要调暗视野,即调节显微镜的措施是换小光圈或换平面反光镜,D正确.故选:D.【点评】本题考查检测还原糖的实验、观察DNA和RNA在细胞中的分布实验、观察植物细胞的质壁分离和复原实验和观察细胞有丝分裂实验,对于此类试题,需要考查注意的细节较多,如实验的原理、实验材料的选择是否合理、实验采用的试剂和试剂的使用方法、实验现象等,需要考生在平时的学习过程中注意积累.7.将人类的红细胞置于不同浓度的蔗糖溶液中,浸泡半小时之后的结果如图,依照细胞外形的变化判断蔗糖溶液的浓度,由高到低排列,正确的是( )A.甲>乙>丙>丁B.丁>甲>乙>丙 C.丙>丁>甲>乙D.丙>乙>丁>甲【考点】物质进出细胞的方式的综合.【分析】红细胞在高浓度的蔗糖溶液中会失水皱缩,蔗糖溶液浓度越高,红细胞的体积越小;在等渗溶液中细胞体积不变,在低渗溶液中细胞体积变大.分析图中4幅图中红细胞的形态和大小,可以正确答题.【解答】解:已知人类的红细胞是圆饼状的,观察图中的4个装置发现乙烧杯中的红细胞是圆饼状的,说明红细胞既没有吸收也没有失水,则乙烧杯中蔗糖溶液的浓度与红细胞内液体浓度相等;丙烧杯中红细胞皱缩,说明细胞失水,则丙烧杯中蔗糖溶液的浓度大于红细胞内液体浓度;丁中细胞由圆饼状变成了球状,说明细胞吸水了,则该烧杯中蔗糖溶液浓度低于红细胞内液体浓度;丁中细胞破裂了,说明细胞吸水最多,则该烧杯中蔗糖溶液浓度最低.根据以上分析,四个烧杯中蔗糖溶液浓度的大小关系是:丙>乙>丁>甲.故选;D.【点评】本题考查物质进出细胞的方式的综合的相关知识,意在考查考生理解所学知识的要点,把握知识间的内在联系、分析图形以及解决问题的能力.8.如图为氨基酸和Na+进出肾小管上皮细胞的示意图,下表选项中正确的是( )选项管腔中氨基酸→上皮细胞管腔中Na+→上皮细胞上皮细胞中氨基酸→组织液A 主动运输被动运输主动运输B 被动运输被动运输被动运输C 被动运输主动运输被动运输D 主动运输被动运输被动运输A.A B.B C.C D.D【考点】物质跨膜运输的方式及其异同.。
四川省达州市任家中学高三物理模拟试题含解析
四川省达州市任家中学高三物理模拟试题含解析一、选择题:本题共5小题,每小题3分,共计15分.每小题只有一个选项符合题意1. 铁路上使用—种电磁装置向控制中心传输信号以确定火车的位置和速度,被安放在火车首节车厢下面的磁铁能产生匀强磁场,如图所示(俯视图)。
当它经过安放在两铁轨间的线圈时,便会产生一电信号,被控制中心接收。
当火车以恒定速度通过线圈时,表示线圈两端的电压U ab随时间变化关系的图像是参考答案:答案:C2. (多选)据河南日报消息,京广铁路不久也将开通时速达到300公里以上“动车组”列车。
届时,乘列车就可以体验时速300公里的追风感觉。
我们把火车转弯近似看成是做匀速圆周运动,火车速度提高会使外轨受损。
为解决火车高速转弯时不使外轨受损这一难题,你认为以下措施可行的是( )A.减小内外轨的高度差B.增加内外轨的高度差C.减小弯道半径D.增大弯道半径参考答案:BD 解析:A、对运行的火车进行受力分析如图,得:mgtanθ=m,由于θ较小,则tanθ≈sinθ≈,h为内外轨道的高度差,L为路面的宽度.则mg=,L、R一定,v增大,需要h增大.故A错误,B正确.C、设弯道半径为R,路面的倾角为θ,由牛顿第二定律得mgtanθ=m,θ一定,v增大时,可增大半径R.故C错误,D正确.故选:BD3. (单选)如右图所示,在水平板左端有一固定挡板,挡板上连接一轻质弹簧.紧贴弹簧放一质量为m的滑块,此时弹簧处于自然长度.已知滑块与挡板的动摩擦因数及最大静摩擦因数均为/3.现将板的右端缓慢抬起使板与水平面间的夹角为θ,最后直到板竖直,此过程中弹簧弹力的大小F随夹角θ的变化关系可能是下图中的()()参考答案:C4. (多选)如图所示,相距为L的两足够长平行金属导轨固定在水平面上,整个空间存在垂直导轨平面向下的匀强磁场,磁感应强度为B导轨上静止有质量为m,电阻为R的两根相同的金属棒ab、cd,与导轨构成闭合回路.金属棒cd左侧导轨粗糙右侧光滑.现用一沿导轨方向的恒F,水平向右拉金属棒cd,当金属棒cd运动距离为S时速度达到最大,金属棒ab与导轨间的摩擦力也刚好达最大静摩擦力.在此过程中,下列叙述正确的是A .金属棒cd 的最大速度为B .金属棒ab 上的电流方向是由a 向bC .整个回路中产生的热量为D .金属棒ab 与导轨之间的最大静摩擦力为F参考答案:AD5. 两列简谐波A 、B 在某时刻的波形如图所示,经过t =TB 时间(TB 为波B 的周期),两波再次出现如图波形,由此信息得知(A )A 波的周期等于或小于B 波的周期 (B )两波是在同一种介质中传播的 (C )两波的波速之比可能为2:1 (D )两波的波速之比可能为5:1参考答案:AC二、 填空题:本题共8小题,每小题2分,共计16分6. 如图所示,倾角为的光滑斜面上,有一长为L ,质量力m 的通电导线,导线中的电流强度为I ,电流方向垂直纸面向外。
湖南省长沙市达材中学复读部2016届高三上学期第三次月考语文试卷.doc
长沙市达材中学复读部2016届第三次月考语文试卷命题:达材中学语文组审题:刘笑松时量150分钟满分150分甲必考题一、现代文阅读(9分,毎小题 3分)阅读下面的文字,完成1-3题互融:中西园林的趋势王向荣东方园林和西方园林是世界园林体系中最重要的两大瑰宝,它们在形成与发展过程中曾各自独立,后来又相互影响,到了现在更是互相融合。
中国是东方园林的发源地和发展中心。
中国地处欧亚大陆的东方,幅员辽阔,自然环境优越,历史文明悠久,人们对美丽神秘的自然充满了热爱与崇拜。
中国传统园林一方面源于古老传说中神仙们居住的乐土,另一方面源于古代人对于自然的理解。
根据古代传说,在昆仑之巅,有西王母的花园,有皇帝的悬圃;在遥远的东海,有蓬莱、瀛洲、方丈三座海岛,找到这三座岛屿,就能从神仙的手中获得长生不老药,这些神话中展示的神秘山岳和美丽岛屿就成为中国园林的一种雏形。
另一方面,中国大地秀美山川的景色无疑是中国人心中最美的自然,并成为中国园林模仿的对象,这种风景也被称为“山水”,中国园林试图以象征的手法展示这种自然的本质,即“虽由人作,宛自天开”,追求“小中见大”,将大千世界的宏观景物微缩到小巧玲珑的壶中天地,这也是先秦以来中华民族“天人合一”人文精神与历史观念发展的结果。
中国传统园林从商周的“囿”、秦汉的宫苑,经过魏晋南北朝的发展,在隋唐时期进入盛期,并在宋朝发展成熟,一直到明清,其造园思想始终一脉相承,在园林创作过程中强调“意境”,追求诗情画意,寓情于景,寓意于物,以物比德,园林经常作为隐逸文化的载体,反映园主的情操和思想,展现心中的世外桃源。
西方园林起源于古埃及和两河流域,那里干旱少雨,只有沿河的谷地是绿色丰饶的,农业生产必须依赖于灌溉,国土的风景也没有中国优美多样。
在这样一种环境里,有着充分水源和灌溉系统的田园成为园林的蓝本,表达了“人间天堂”的理想。
这些园林也多为实用性的园圃,如果树园、蔬菜园和葡萄园等,形式也是几何式的。
南通市2016届高三全真模拟数学试题3(完整资料).doc
(第4题)【最新整理,下载后即可编辑】2016年数学全真模拟试卷三试题Ⅰ一、填空题:本大题共14小题,每小题5分,共70分.请把答案直接填写在答题卡相应位置上......... 1.已知集合A ={-1,0,2},B ={x |x =2n -1,n ∈Z },则A ∩B = ▲ .【答案】{-1}2. 设1e ,2e 是平面内两个不共线的向量,123 ()x x =-∈R a e e ,122=+b e e .若//a b ,则x 的值为 ▲ . 【答案】-63. 从集合{1,2,3}中随机取一个元素,记为a ,从集合{2,3,4}中随机取一个元素,记为b , 则a ≤b 的概率为 ▲ . 【答案】894. 行李的费用c (单位:元)与行李重量w 之间的流程图.假定某旅客的托运费为托运的行李重量为 ▲ 千克. 【答案】205. 函数0 0 ()1 0x f x x x x =⎧⎪=⎨-≠⎪⎩,,,的零点个数为 ▲ .【答案】36. 在平面直角坐标系xOy 中,曲线ln y x x =在e x =处的切线与两坐标轴围成的三角形的面积是 ▲ . 【答案】2e 47. 如图,是某班一次竞赛成绩的频数分布直方图,利用组中值可估计其的平均分为 ▲ . 【答案】628. 若函数()sin()f x A x ωϕ=+(0 0 )A ωϕπ>><2,,的图象关于坐标原点中心对称,且在y 轴右侧的第一个极值点为x π=3,则函数()f x 的最小正周期为 ▲ . 【答案】43π 9. 关于定义在R 上的函数()f x ,给出下列三个命题: ①若(1)(1)f f =-,则()f x 不是奇函数;②若(1)(1)f f >-,则()f x 在R 上不是单调减函数;③若(1)(1)f x f x +=-对任意的x ∈R 恒成立,则()f x 是周期函数. 其中所有正确的命题序号是 ▲ .(第7题)【答案】②③10.已知数列{}n a 的前n 项和 1 ()n n S k k =-∈R ,且{}n a 既不是等差数列,也不是等比数列,则k 的 取值集合是 ▲ . 【答案】{}0. 【解析】.11.如果将直线l :20x y c ++=向左平移1个单位,再向下平移2个单位,所得直线l '与圆C :22240x y x y ++-=相切,则实数c 的值构成的集合为▲ .【答案】{3-,13-}【解析】易得直线l ':(1)2(2)0x y c ++++=,即250x y c +++=,圆C :22(1)(2)5x y ++-=的圆心(1 2)-,到直线l ':250x y c +++==解得3c =-或13c =-.12.已知正数x ,y 满足3x y xy x y-=+,则y 的最大值为 ▲ . 【答案】13【解析】由2223x y xy x y -=+,得2112322x y x y xy y x-+==-,所以113222y x y x -=+≥,从而23210y y +-≤,解得13y ≤. 13.考察下列等式:11ππcos isin i 44a b +=+, ()222ππcos isin i 44a b +=+,()333ππcos isin i 44a b +=+,……()ππcos isin i 44nnna b +=+,其中i 为虚数单位,a n ,b n (n *∈N )均为实数.由归纳可得,a 2015+b 2015的值为 ▲ .【答案】0【解析】通过归纳可得,()ππππcos isin cos isin 4444nn n +=+,从而a 2015+b 20152015πcos 4=2015πsin 4+=0. 14.在△ABC 中,13AE AB =,23AF AC =.设BF ,CE 交于点P ,且EP EC λ=,FP FB μ=(λ,μ∈R ),则λμ+的值为 ▲ .【答案】57【解析】不妨考虑等腰直角三角形ABC ,设AB 3=,3AC =, 以AB ,AC 分别为x 轴,y 轴建立平面直角坐标系xOy ,则A (0 0),,(3 0)B ,,(0 3)C ,,(1 0)E ,,(0 2)F ,,直线BF 的方程为:132y x +=,①直线CE 的方程为:13yx +=,② 由①②得,37x =,127y =,所以()312 77P ,, 代入EP EC λ=,FP FB μ=得,31(01)7λ-=-,30(30)7μ-=-, 解得47λ=,17μ=,故λμ+=57.二、解答题:本大题共6小题,共90分.请在答题卡指定区域.......内作答,解答时应写出文字说明、证 明过程或演算步骤. 15.(本题满分14分)已知△ABC 内接于单位圆(半径为1个单位长度的圆),且(1tan )(1tan )2A B ++=.(1)求角C 的大小; (2)求△ABC 面积的最大值.(1)由(1tan )(1tan )2A B ++=得tan tan 1tan tan A B A B +=-,所以tan tan tan()11tan tan A B A B A B++==-,(4分) 故△ABC 中,A B π+=4,C 3π=4(6分) (2)由正弦定理得2sin c =3π4,即c =(8分)由余弦定理得2222cos a b ab 3π=+-4,即222a b =+,(10分)由2222a b ab =+≥得2ab -≤(当且仅当a b =时取A BCP(第16题)D等号)(12分)所以13sin 2S ab π=4(14分)16.(本题满分14分)如图,在四棱锥P ABCD -中,锐角三角形PAB 所在的平面与底面ABCD垂直,PBC BAD ∠=∠90=.(1)求证:BC ⊥平面PAB ;(2)求证://AD 平面PBC .证明:(1)在平面PAB 内过点P 作PH AB ⊥于H ,因为平面PAB ⊥平面ABCD,平面PAB平面ABCD AB =,PH ⊂平面PAB ,所以PH ⊥平面ABCD ,(4分) 而BC ⊂平面ABCD ,所以PH ⊥BC ,由90PBC ∠=得PB ⊥BC , 又PHPB P =, PH ,PB ⊂平面PAB , 所以BC ⊥平面PAB ,(8分) (2)因为AB ⊂平面PAB ,故BC ⊥AB , 由90BAD ∠=得AD AB ⊥,故在平面ABCD 中,//AD BC ,(11分)A BCD又AD ⊄平面PBC ,BC ⊂平面PBC , 所以//AD 平面PBC .(14分)17.(本题满分14分)某公司设计如图所示的环状绿化景观带,该景观带的内圈..由两条平行线段(图中的AB ,DC )和两个半圆构成,设ABx m ,且80x ≥.(1)若内圈周长为400 m ,则x 取何值时,矩形ABCD 的面积最大?(2)若景观带的内圈所围成区域的面积为22500π m 2,则x 取何值时,内圈周长最小?【解】设题中半圆形半径为r (m ),矩形ABCD 的面积为S(m 2),内圈周长为c (m ). (1)由题意知:2S rx =,且22π400x r +=,即π200x r +=,于是()22000022π2(π)ππ2πx r S rx x r +==⋅⋅=≤(m 2)当且仅当π100x r ==(m )时,等号成立. 答:当x 100(m )时,矩形ABCD 的面积最大.(6分)(2)由题意知:2225002ππrx r+=,于是22500π2π2x r r =-⋅, 从而 ()22500π22π22π2π2c x r r r r =+=-⋅+22500ππr r =+.(8分)因为80x ≥,所以22500π802π2r r -⋅≥,即()2π160π225000r r +⋅-≤,解得250π90r -≤≤,所以900πr <≤,(10分)故221π8100r≥. 因为2222500225001π16πππ<0ππ81009c r'=-⋅+-⋅+=-≤,(12分)所以关于r 的函数22500ππc r r =+在(900π⎤⎥⎦,上是单调减函数.故当90πr =即22500π90802902πx =-⋅=⨯(m )时,内圈周长c 取得最小值,且最小值为225009034090+=(m ).(14分)18.(本题满分16分)在平面直角坐标系xOy 中,设椭圆C :22221(0)y x a b a b+=>>的焦距为.(1)求椭圆C 的方程;(2)设点P 是椭圆C 上横坐标大于2的一点,过点P 作圆22(1)1x y -+=的两条切线分别与y轴交于点A ,B ,试确定点P 的坐标,使得△PAB 的面积最大.解:(1)由题意得,2c =22251a b+=,(2分)又222c a b =-, 故212a =,26b =, 所以椭圆C 的方程为221126y x +=;(5分)(2)设点00( )P x y ,,其中(02x ∈,且22001126x y +=,又设(0 )A m ,,(0 )B n ,,不妨m n >,则直线PA 的方程为:000()0y m x x y x m --+=, 则圆心(1 0),到直线PA的距离为1=,化简得2000(2)20x m y m x -+-=,(8分) 同理,2000(2)20x n y n x -+-=,所以m ,n 为方程2000(2)20x x y y x -+-=的两根, 则()()220002024(2)(2)y x x m n x +--=-,(10分)又△PAB 的面积为S 01()2m n x =-,所以222000020(2)(2)y x x S x x +-=-220020(2)82(2)x x x -+=-,(12分)令(0202t x ⎤=-∈⎦,记222(8)(2)()2t t f t t ++=,则324(2)(16)()0t t t f t t +-'=>在(02⎤-⎦恒成立, 所以()f t 在(02⎤⎦上单调递增, 故2t =,即0x =时,()f t 最大,此时△PAB 的面积最大.(16分)19.(本题满分16分)已知函数1()ln f x a x x=+,a ∈R . (1)若()f x 有极值,求a 的取值范围;(2)若()f x 有经过原点的切线,求a 的取值范围及切线的条数,并说明理由.解:(1)易得2211()(0)aax f x x x x x -'=-=>,(2分) 若0a ≤,则()0f x '<,从而()f x 无极值;若a > 0,则当1x a <时,()0f x '<;1x a>时,()0f x '>,此时()f x 有极小值()1f a . 综上,a 的取值范围是(0)+∞,.(4分)(2)设P (x 0,y 0) 是经过原点的切线与函数()f x 图象的切点,则切线方程为()0200011ln ()a y a xx x x x x --=--,(6分) 因为切线过点(0,0),于是00011ln a xa x x --=-+,即()0021ln a x x =-,因为0a ≠,所以0002ln x x x a =-, 设()ln g x x x x =-,则()1ln 10g x x '=--=,得1x =,(8分)21a>02a << 当21a=或20a<,即2a =或a <0时,有且仅有一条切线,当201a <<,即2a >时,存在两条切线,(12分)下证:对任意的(01)m ∈,,ln x x x m -=在(0,1)内一定有一解,其中2m a=. ⇔证明11ln mx x+=在(0,1) 内有一解,⇔证明1ln t mt +=在(1)t ∈+∞,内有一解.令()1ln h t mt t =--, 则h (1) =m – 1<0,(2)21ln 2n n h m n =⋅--⋅21n m n >⋅--(11)1n m n =⋅+--(1)112n n m n n +⎡⎤>++--⎢⎥⎣⎦, 这是关于n 的二次函数,所以当n 充分大时,一定取得正值,由介值定理知,()h t 在(1)+∞,内有唯一解,即证.(16分)20.(本题满分16分) 已知数列{}n a 的通项公式2(1)n n na =--,*n ∈N .设1n a ,2n a ,…,tn a (其中1n <2n <…t n <,*t ∈N )成等差数列.(1)若3t =.①当1n ,2n ,3n 为连续正整数时,求1n 的值; ②当11n =时,求证:32n n -为定值; (2)求t 的最大值. 解:(1)①依题意,1n a ,11n a+,12n a+成等差数列,即111122n n n aa a ++=+,从而111111112222(1)2(1)2(1)n n nn n n ++++⎡⎤--=--+--⎣⎦,当1n 为奇数时,解得124n=-,不存在这样的正整数1n ;当1n 为偶数时,解得124n=,所以12n =.(3分)②依题意,1a ,2n a ,3n a 成等差数列,即2312nn a a a =+,从而332222(1)32(1)n n n n ⎡⎤--=+--⎣⎦,当2n 3n 均为奇数时,321221n n --=,左边为偶数,故矛盾;当2n 3n 均为偶数时,3221221n n ---=,左边为偶数,故矛盾;当2n 为偶数,3n 奇数时,321225nn +-=,左边为偶数,故矛盾;当2n 为奇数,3n 偶数时,321220nn +-=,即321n n -=.(8分)(2)设s a ,r a ,t a (s r t <<)成等差数列,则2r s t a a a =+,即22(1)2(1)2(1)r r s s t t⎡⎤--=--+--⎣⎦,整理得,1222(1)(1)2(1)st r s t r ++-=-+---,若1t r =+,则2(1)3(1)s s r=-+--,因为22s ≥,所以(1)3(1)s r -+--只能为2或4,所以s 只能为1或2;(12分) 若2t r +≥,则1214322222222210s t r s r r ++++-+-+-=≥≥,(1)(1)s t -+-2(1)r --4≤,故矛盾,综上,只能1a ,r a ,1r a +成等差数列或2a ,r a ,1r a +成等差数列,其中r 为奇数,从而t 的最大值为3.(16分)试题Ⅱ(附加题)21.【选做题】本题包括A 、B 、C 、D 四小题,请选定其中两题,.......并在相应的答题区域内作答.............若 多做,则按作答的前两题评分.解答时应写出文字说明、证明过程或演算步骤. A .(几何证明选讲)如图,已知△ABC 的内角A 的平分线交BC 于点D ,交其外接圆于点E . 求证:AB ⋅AC =AD ⋅AE .证明:连结EC ,易得∠B =∠E ,(2分) 由题意,∠BAD =∠CAE , 所以△ABD ∽△AEC ,(6分)从而AB AD AEAC=, 所以AB ⋅AC =AD ⋅AE .(10分)B .(矩阵与变换) 求矩阵M 0001⎡⎤=⎢⎥⎣⎦的特征值和特征向量.解:矩阵M 的特征多项式为0()(1)01f λλλλλ==--,(2分)令()0f λ=,解得M 的特征值10λ=,21λ=.(4分) 将10λ=代入二元一次方程组000(1)0 x y x y λλ-⋅=⎧⎨-⋅+-=⎩,,ABCD E(第21—A 题)解得 00 x x y ∈≠⎧⎨=⎩R ,且,,所以矩阵M 的属于特征值0的一个特征向量为10⎡⎤⎢⎥⎣⎦;(7分) 同理,将21λ=代入①解得00 x y x =⎧⎨∈≠⎩R ,,且,所以矩阵M 的属于特征值1的一个特征向量为01⎡⎤⎢⎥⎣⎦.(10分)C .(极坐标与参数方程)在极坐标系中,已知A ( 1,π3 ),B ( 9,π3 ),线段AB 的垂直平分线l 与极轴交于点C ,求l 的极坐标方程及△ABC 的面积. 解:易得线段AB 的中点坐标为(5,π3),(2分)设点P (ρ,θ)为直线l 上任意一点,在直角三角形OMP 中,ρcos(θ-π3)=5,所以,l 的极坐标方程为ρcos(θ-π3)=5,(6分)令θ=0,得ρ=10,即C (10,0).(8分)所以,△ABC 的面积为:12×(9-1)×10×sin π3=203.(10分)D .(不等式选讲)已知x ,0y >,求证:22x y x y ++≥证明:因为x ,0y >,且2()0x y -≥,(当且仅当x y =时“=”成立) 所以222x y x yx y +++≥, ① (4分)又2x y+,(当且仅当x y =时“=”成立)② (8分)由①②得22x y x y ++x y =时“=”成立).(10分)【必做题】第22、23题,每小题10分,共计20分.请在答题..卡指定区域.....内作答,解答时应写出文 字说明、证明过程或演算步骤. 22.如图,在正四棱柱1111ABCD A B C D -中,1AB =,1AA h =.(1)若2h =,求1AC 与平面1A BD 所成角的正弦值;(2)若二面角1A BD C --的大小为34π,求h 的值.A CBD1A1B1D1C(第22题)解:如图,以点A 为坐标原点,AB ,AD ,1AA 分别 为x ,y ,z 轴,建立空间直角坐标系O xyz -, (1)当2h =时,(1 0 0)B ,,,(0 1 0)D ,,,1(0 0 2)A ,,,1(1 1 2)C ,,, 则1(1 1 2)AC=,,,1(1 0 2)A B =-,,,1(0 1 2)A D =-,,,设平面1A BD 的法向量( )a b c =,,n ,则由110 0A B A D ⎧⋅=⎪⎨⋅=⎪⎩,n n 得,20 20 a c b c -=⎧⎨-=⎩,, 不妨取1c =,则2a b ==,此时(2 2 1)=,,n ,(3分)故111cos AC AC AC ⋅<===⋅,n n>n,所以1AC 与平面1A BD 所成角的正弦值;(5分)(2)由1(0 0 )A h ,,得,1(1 0 )A B h =-,,,1(0 1 )A D h =-,,,设平面1A BD 的法向量( )x y z =,,m , 则由110 0A B A D ⎧⋅=⎪⎨⋅=⎪⎩,m m 得,00 x zh y zh -=⎧⎨-=⎩,,不妨取1z =,则x y h ==, 此时( 1)h h =,,m ,(7分) 又平面CBD 的法向量1(0 0 )AAh =,,,故111cos AA AA AA ⋅<===⋅,m m >m,解得h =.(10分)(第22题)23.设n 为给定的不小于3的正整数.数集P ={}xx n x ∈*N ≤,,记数集P 的所有(1 )k k n k ∈*N ≤≤,元子集的所有元素的和为k P . (1)求1P ,2P ; (2)求12n P P P ++⋅⋅⋅+.解:(1)易得数集P ={}1 2 3 n ⋅⋅⋅,,,,, 则1(1)1232n n P n +=+++⋅⋅⋅+=,(2分)数集P 的2元子集中,每个元素均出现1n -次,故2(1)(1)(1)(123)2n n n P n n +-=-+++⋅⋅⋅+=,(4分) (2)易得数集P 的k (1 )k n k ∈*N ≤≤,元子集中,每个元素均出现11C k n --次,故1111(1)C (123)C 2k k k n n n n P n ----+=⋅+++⋅⋅⋅+=,(6分) 所以12n P P P ++⋅⋅⋅+=01211111(1)(C C C C )2n n n n n n n -----++++⋅⋅⋅+ 1(1)22n n n -+=⋅ 2(1)2n n n -=+⋅.(10分)。
四川省达州市高级中学2015-2016学年高一地理3月月考试题(无答案)
达州市高级中学2016年高一三月考试题地理Ⅰ卷时间90分钟总分100分一、选择题(每小题2分,共50分)地理环境是一个整体,各组成要素相互作用产生平衡功能,各要素的变化是一个统一的过程,往往“牵一发而动全身”。
据此完成1~2题。
1.下列体现陆地环境整体性的说法,错误的是( )A.火山喷发喷出的尘埃会影响到达地面的太阳辐射和当地气温B.我国东南沿海多雨而西北内陆干旱C.在热带草原中生活着善跑便于迁徙的长颈鹿、羚羊等动物D.长江洪涝灾害发生的原因之一是上游森林的大量砍伐2.把非洲热带草原上的狮子、猎豹等大量捕杀,若干年后的景象是( )A.大群的羚羊、斑马生活在安宁的草原上B.草原依然如故,没有变化C.初始植食动物大增,后又数量锐减D.草原退化、沙化读图,回答3~4题。
3.“五原春色旧来迟,二月垂杨未挂丝。
即今河畔冰开日,正是长安(今西安)花落时。
”诗歌中描述的现象( )A.反映了由赤道到两极的地域分异规律B.是由两地的水分差异造成的C.是由流经两地的河流不同造成的D.是一种非地带性现象4.“羌笛何须怨杨柳,春风不度玉门关。
”这句诗从地理角度理解( )A.说明冬季风到不了玉门关B.反映从沿海到内陆水分条件的差异C.反映玉门关的热量条件不适合种植杨柳D.反映玉门关以西绝对无杨柳生长读“北非五国绿色工程示意图”,回答5~6题。
5.影响图中绿色工程分布的主要因素是( )A.热量B.水分C.地形D.洋流6.该项工程建设所遵循的地域分异规律是( )A.由赤道到两极的地域分异规律B.从沿海向内陆的地域分异规律C.山地的垂直地域分异规律D.非地带性规律下图表示的是某山垂直自然带的分布。
读图回答7~10题。
7.图中①②③依次代表( )A.积雪冰川带、高寒荒漠带、高山草原带B.高寒荒漠带、山地落叶阔叶林带、高山草原带C.高寒荒漠带、积雪冰川带、高山草原带D.高山草原带、山地针叶林带、高寒荒漠带8.决定该山山麓自然带的主导因素是( )A.纬度位置B.海陆位置C.山脉走向D.山体坡度9.决定该山垂直自然带变化的主导因素是( )A.热量B.降水量C.大气环流D.太阳辐射10.该山可能位于( )A.赤道附近B.40°S附近C.40°N附近D.极圈附近图甲为“世界某区域示意图”,图乙为“M地区气候资料图”,图中山地M一侧的山坡为西侧。
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达仁中学2016年5月高三英语自测题(时间:100分钟;满分120分)第一部分阅读理解(共两节,满分40分)第一节(共15小题,每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。
A“Can I hug you?” community nurse Joyce Jebambula asks with a smile as she welcomes me back to her village. “Of course,” I say as I put my arms around her. It’s an unbelievable moment. Just at the height of the outbreak more than a year ago, there was an “avoid body contact” rule here. It’s now been removed.One of the most challenging parts of reporting this outbreak over the past 18 months is that I haven’t been able to touch anyone in the worst-affected countries. When Ebola (埃博拉病毒) survivors described in tears losing their families, I had to almost sit on my hands to avoid reaching out to comfort them.The outbreak was declared over in Sierra Leone on 7 November. I returned for the celebrations. But despite reaching this long-awaited milestone, all is not well.Ibrahim Koroma, 21, holds his survivor’s certificate outside the home. All 17 of his family are now dead. The certificate is one of his most valuable possessions. “He does not cause any risk to the community,” it reads.Ibrahim tells me how his landlord allowed him to stay in one of the rooms of his former family home until the end of the year. He says he doesn’t know what he’ll do after that. He does some part-time work, relying heavily on help from neighbours. His two little sisters and little brother died in the very room where he now sleeps. He says he often lies awake thinking about them, feeling very bad.The Ebola outbreak in West Africa was the worst on record. In past outbreaks there had only been a few hundred deaths and a few hundred survivors. It was thought Ebola could live for only three months. But research has now shown it can last at least nine months. Scientists are still trying to find how long it could be infectious.21. What does the author think of hugging Joyce?A. Illegal.B. Supporting.C. Unbelievable.D. Ordinary.22. When interviewing Ebola survivors the author _________.A. couldn’t touch them with handsB. kept comforting them with handsC. held their hands to show sympathyD. couldn’t help comforting them with hands23. Ibrahim Koroma values his certificate because it _________.A. is a sign of his contributionsB. shows he is a healthy personC. has been the only one for patients so farD. is a great honor to have it in his village24. We can learn from the passage that _________.A. Ebola can only survive a few daysB. Ibrahim’s neighbours treat him badlyC. Ebola still influences Ibrahim’s lifeD. there were once 17 people in Ibrahim’s familyBAn Introduction to KindSpringHow can I use this website?You can share about your own acts of kindness or read hundreds of inspiring stories by others. You can look through our kindness ideas for every occasion and age group or order Smile Cards. You can also become part of our online community or subscribe to a newsletter (简报). If you’re up for it, you can also join our 21-Day Challenge!Do you charge for ay of your services?Everything here is (and will always be) a labor of love, KindSpring is a 100% advertisement-free portal (门户网站), run 100% by volunteers. Our wonderful team is made up of devoted individuals located all around the world. Together we maintain our portal, send out a weekly kindness newsletter, ship Smile Cards all over the world for free and allow people anywhere to download, print and republish our content without limits.Who runs KindSpring?KindSpring is run 100% by volunteers who live all over the world. We do not belong to any field, or culture, nor do we belong to any religious or spiritual group. What brings us together is simply our devotion to making the world a brighter place—one kind act at a time. Learn more about our wonderful team!What are Smile Cards?Smile Cards are business-sized cards that serve as reminders for a game of kindness tag. The idea is that when you do an anonymous kind act for someone, you leave the card behind to let the one who receives it know that someone reached out to touch their life with kindness, and now it’s their turn to pay it forward by doing something kind for someone else and passing the card along.25. What can we do on KindSpring according to Paragraph 1?A. Share our stories of kindness with others.B. Build an online community of our own.C. Help sell its newsletters to raise money.D. Design some special Smile Cards.26. The articles published on KindSpring ________.A. will also be published on its daily newsletterB. mustn’t be published without its permissionC. are only available to individualsD. are for free use by everyone27. KindSpring is operated in order to ________.A. deliver Smile Cards to people worldwideB. start a 100% advertisement-free websiteC. brighten the world with acts of kindnessD. build a platform for volunteers to gatherCThe Internet is a fast-growing space, with 2.4 billion people set to use it by the end of 2013. Reports suggest that this figure is likely to grow to 3.4 billion by 2016, and as many as 5.4 billion by 2025. It is estimated that the 2025 figure will equate to approximately 66% of the world’s population by that point.Naturally, as the Internet expands, so will the number of Internet-enabled mobile devices. In 2013, it is thought that 17% of all connections to the Internet have been made by mobile devices. Fast forward to 2015 and this figure rises to 80%. Reports show that 73% of the UK currently own a smart phone—a number that is expected to rise to 96% by 2017. Looking at similar figures for tablet (平板电脑) adoption rates, 28% of the UK currently use a tablet—but this could almost double to 53% by 2017.In 2012, 60 million people connected to the Internet using a mobile 4G connection, but by 2017, this will have rocketed to 992 million. Mobiles are increasingly being seen as the natural replacement for credit and debit cards, and it’s easy to understand the reason when reports suggest that 50% of all transactions (交易) will be made by the close of this decade.The mobile Internet is already linked to plenty of our everyday items, but this is expected to grow hugely over the coming seven years—so much so that the nickname “the Internet of Things” is now used to describe this development. As an example of the effect this will have on our lives, by 2040, 70% of cars will be driverless thanks to mobile Internet tech.28. Compared with 2013, by 2016, the figure of Internet users can grow by about ________.A. 53%B.42%C. 28%D. 15%29. What is Paragraph 3 mainly about?A. The growth of mobile use of the Internet.B. Tablet adoption rates.C. Popular smart phones in the UK.D. How to use mobile for money management.30. When will 50% of all transactions probably be made by mobile according to the text?A. By 2022.B. By 2020.C. By 2030.D. By 2040.31. The author mentions driverless cars in the end in order to _________.A. predict the good market for car producersB. describe the history of the Internet of ThingsC. prove the Internet can give different experiences in futureD. show the effect the mobile Internet will have on our livesDChinese students have tended to come to the UK at a younger age in recent years, which means they come to Britain not only for higher education, but also for high school or even primary school. Asian investors (投资) have followed this trend, and started to buy independent schools to serve this demand.An article carried by the Times of London on October 17 reported that last year Chinese-owned company Achieve Education bought Chase Grammar, a boarding and day school in Cannock, Staffordshire. Chase Grammar includes a program that offers extra support for pupils from China. “This trend is very good and I am not at all surprised,”Barnaby Lenon, chairman of the Independent Schools Council, told the Global Times, adding that Chinese people like the English education system. “We welcome Chinese investors in British private education.”“Chase Grammar School is small, and the classes are small. It gives the school a family atmosphere,”Jackie Medhurst, principal of Chase Grammar School, said in a welcome note on the school’s website.Small class sizes, personal care, good exam results, and entry to world-famous universities are features that are most attractive to Chinese students. But many parents are also worried that foreign investors might expand the percentage of international students, and that might undermine the British tradition.It seems that the rising wealthy class in Asia is not satisfied with international branches in their own countries. They want to sent their kids to the original British boarding schools to be surrounded by English people and immersed in the British culture. According to a survey by UK Property W eekly, houses near universities and outstanding primary and secondary schools are the most preferable location for Chinese buyers.Compared to the independent school system, universities are more open. It is reported that China remains the leading source of international students for London.32. Which of the following can we know from Barnaby Lenon’s words?A. He was surprised at the present current trend.B. English universities are better than those in China.C. The English education system is welcomed by the Chinese.D. There will be fewer investors in private education.33. Which of the following is NOT among the attractions of the British school?A. The small size of classes.B. The entry to world-famous universities.C. Good exam results.D. Good living conditions.34. The underlined word “undermine” in Paragragh 3 is closest in meaning to “________”.A. weakenB. strengthenC. followD. overcome35. Chinese parents are buying houses in order to _________.A. invest more moneyB. support their children’s educationC. show off their abilityD. compete with other parents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。