高三限时训练1

高考二轮复习限时训练（一）（时间：60分钟）班级 姓名 得分一、填空题：本大题共12小题，每小题5分，共60分。

1、复数ii4321+-在复平面上对应的点位于第__ 象限. 2、命题“2,220x R x x ∃∈++≤”的否定是3、设{}{}=⋂+==∈==B A x y y x B R x x y y A 则,2|),(,,|2 4、已知x 、y 的取值如下表：从散点图分析，y 与x 线性相关，且回归方程为 0.95y x a =+，则a = 5、若椭圆的焦距长等于它的短轴长，则椭圆的离心率等于____ ____。

6、如果执行右面的程序框图，那么输出的S = 7、把函数4cos()3y x π=++1的图象向左平移ϕ个单位，所得的图象对应的函数为偶函数，则ϕ的最小正值为8、如果实数x ,y 满足x 2+y 2=1,则（1+xy ）(1－xy )的最小值为9、已知实数x ，y 满足条件5003x y x y x -+⎧⎪+⎨⎪⎩≥≥≤，i z x y =+（i 为虚数单位），则|12i |z -+的最小值是 ．10、一枚半径为1的硬币随机落在边长为3的正方形所在平面内，且硬币一定落在正方形内部或与正方形有公共点，则硬币与正方形没有公共点的概率是11、若函数f (x )=e x -2x-a 在R 上有两个零点，则实数a 的取值范围是12、设函数)0](,[,321)1ln()(2>-∈+-+=t t t x x e x x f x ，若函数的最大值是M ，最小值是m ，则M+m=二、解答题：本大题共2小题，共30分。

13、（本小题满分15分）在ABC ∆中，角A 、B 、C 的对边分别为,,a b c ，已知向量33(cos ,sin ),22A A m = (cos ,sin ),22A An =且满足m n +=（Ⅰ）求角A 的大小；（Ⅱ）若,b c +=试判断ABC ∆的形状。

14、（本小题满分15分）已知圆C ：224x y +=.（1）直线l 过点()1,2P ，且与圆C 交于A 、B 两点，若||AB =l 的方程;（2）过圆C 上一动点M 作平行于x 轴的直线m ，设m 与y 轴的交点为N ，若向量OQ OM ON =+，求动点Q 的轨迹方程，并说明此轨迹是什么曲线.高考二轮复习限时训练（一）1、三2、2,220.x R x x ∀∈++>3、∅4、2.6 5 6、25507、32π 8、43 9 10、 π+21111、()+∞-,2ln 2212、6 二、解答题： 13、（1）3A π=———————————————————7分（2）ABC ∆为直角三角形。

2013届高三限时训练（1）（时间：45分钟）班级姓名得分一．语言基础知识1．下列词语中加点的字，每对读音都不相同的一组是（3分）A．绮．丽／倚．马可待信笺．／草菅．人命躯壳．／金蝉脱壳．B．咯．血／恪．尽职守蹊．跷／休戚．相关切削．／削．足适履C．茁．壮／相形见绌．造诣．／自怨自艾．劲．旅／疾风劲．草D．机杼．／毁家纾．难折．本／退避三舍．威吓．／杀鸡吓．猴2.下列词语中加点的字，每对读音都不相同的一组是（3分）（）A．焙．烧/．蓓．蕾恫．恐/恸．哭面颊．/汗流浃．背B．荠．菜/同侪．迄．今/收讫．踉．跄/不稂．不莠C．沙碛．/油渍．神祇．/福祉．咋．舌/乍．暖还寒D．桔．梗/诘．问桎梏．/诰．命筵．席/垂涎．已久3．下列各句中，没有语病的一句是（3分）（）A．关于小说的创作，莫言认为作家能否通过故事表达自己对社会的看法，歌颂真善美，揭露假恶丑是一件严肃的事情，并为此继续努力。

B．企业在市场上的竞争，表面上看是品牌、产品、价格、服务的竞争，但实质上是企业所有员工的品质和心态的竞争。

C．备受观众追捧的“中国好声音”不仅仅是一个优秀的选秀节目，更是中国电视历史上真正意义的首次制播分离，树立了中国电视音乐节目的新标杆。

D．10月8日零点，随着全国各地高速公路收费站收费杆的落下，使持续八天的高速公路免费通行鸣金收兵，标志着首次实施的重大节假日小客车免费通行政策首战告捷。

4. 下列各句中，没有语病的一句是（3分）（）A. 麦当劳店堂里宜人的温控环境和悦耳的轻音乐，使不少中国顾客把该场所作为闲聊、会友，甚至读书写作的好地方。

B. 打开莎士比亚戏剧集，如同打开百宝箱，使人眼花缭乱，处处迸发出智慧的火花，闪现着艺术的光芒。

C. 对于那些情节严重的犯了罪的干部，特别是占据重要职位的干部，我们必须依法给以严厉的法律制裁。

D. 苏通大桥建造的初衷是，拉近苏北、苏南的距离，进一步推动江苏省沿江开发战略的实施，具有十分重要的意义。

2010-2011第一学期江苏张家港市后塍高中高三限时训练(01) (2010.10)班级_______ 姓名________________ 学号_________1.设集合A = l(x—2)2兰2x+11,xw R｝，则集合Ac N*中有____________ 个元素。

3.已知正项等比数列a，的前n项和为S n,若S^7a1，则等比数列的公比等于______白_i ¥ __ .4. 复数乙= ——I .Z2=2—i2009分别对应复平面上的点P.Q，则向量PQ对应的复数为订+i丿5. 已知直线l1: y =2x+3，直线l2与直线l1关于直线y = -x对称，则直线l2的斜率为 _________________6.已知函数f(x) =ax be x图象上在点P(-1,2)处的切线与直线y =「3x平行，则函数f (x)的解析式为7. 已知等差数列fa n I的前n项和为S^ a 1 n2• a,某三角形三边之比为a?: a3: ，则该三角形最大角为____ _____________8. 已知直线2x・3y •・1=0与圆x2• y2-2x-3=0交于M,N两点，则弦MN的垂直平分线方程为9.在锐角.\ABC 中，角A、B、C的对边分别为a、b、c ,且满足(2a-c)cos B =bcosC .(1)求角B的大小；T 4 ■+冲(2 )设m =(sin A ,1), n =(3 , cos2 A)，试m n 求的取值范围.「7 2. 一| 3.24. 3-i5. 0.56. 参考答案y =-2.5x-0.5e x 17. 120 8. 3x-2y-3=09. （1）B =60；, （2）（2,17]2. 若cos i ■-:-- 贝U sin（2兀一a ）= ___兰且:。

高三英语晚自习限时训练一、阅读理解AExperience College at HarvardChallenge yourself in college-level academics. Meet new friends from around the world. Strengthen your college application. And, build important life skills that can make your future college experience a success.Pre-College ProgramAn intense and exciting glimpse into the college experience. During this intensive two-week program, you will take the first steps toward your college j ourney alongside a diverse group of exceptional high school students.• Challenge yourself in a college course taught by Harvard faculty and affiliates, without the pressure of grades.• Engage with your peers in structured co-curricular activities, college readiness workshops, and social events.• Two weeks, non-creditSecondary School ProgramImmerse yourself in college life for seven weeks! In this dynamic seven-week program, you can earn college credit while experiencing firsthand what it’s really like to be a college student.• Choose one or two college-level classes that delve deeply into subjects that really excite you and may not be offered in high school.• Prepare for the future as you experience what it’s really like to balance responsibility with independence in one of three program formats – online, commuting, or residential. • Seven weeks, college creditApplication is now open for both high school programs! See program calendars for important dates and deadlines.To get our updates, join our mailing list for helpful information and important deadlines. Start your education journey today!1. What can we learn about the two programs?A．All the learning activities take place online.B．They are required procedures for college application.C．They challenge the students with college-level courses.D．Students can earn college credits after learning the two programs.2. According to this passage, applicants can .A．start to apply for both programs nowB．pay for the program calendars from todayC．apply for the programs throughout the yearD．download a mailing list to get helpful updates3. What is the purpose of this passage?A．To raise money for Harvard Summer Programs.B．To show the diverse courses in Harvard University.C．To share the college learning experience with readers.D．To introduce Harvard Summer Programs for high school students.BOne third of adults over 65 in America have never used the Internet, and half don’t even have Internet access at home. In San Francisco, “the center of tech”, 40% of older adults do not have basic digital literacy skills.This situation is becoming appalling as over 10,000 Americans turn 65 every single day. By 2050,22% of Americans will be 65 or older. Meanwhile, technology is developing very fast. This means that a large number of people will be unable to proficiently use emergent technology.Many people believe that seniors aren’t required to participate in our tech future because they’ll be retired and relaxed soon. But this is the farthest thing from the truth. Baby boomers are currently experiencing a different boom: With more people getting older than ever before, their life expediencies are also increasing dramatically. With medical advancements, the number of American people projected to live into the ir 90’s has doubled since 1965.However, they don’t have strong financial or educational support. This is not a problem; it’s a crisis. More than half of employees over 50 have been laid off in what’s being called ”forced retirement“. And few organizations are actively helping older employees make the transition from full-time jobs to part-time ones. For those fortunate enough to be employed, 3 out of 5 older workers experience prejudice.The easiest solution is to teach digital literacy. If baby boomers want to survive the forthcoming retirement crisis, they should get enough digital knowledge and skills to operate today’s tools and tomorrow’s platforms. With every crisis comes an opportunity. Tutoring, customer service, editing, research, book-keeping, and other virtual assistance-based work open the doors. But again, digital knowledge is first required to live in our high-tech society and gig economy. So try to get more online and navigate the growing number of sites and apps.；4. What does the underline d word “appalling” probably mean in paragraph2? A．Confusing. B．Terrible. C．Controllable. D．Inspiring.；5. What problem may baby boomers face?A．A crisis after retirement. B．Being knocked out in the future. C．Failing to receive good healthcare. D．Tending to double their life expediencies.；6. What is the last paragraph mainly about?A．The features of high-tech jobs. B．The way out for baby boomers. C．Potential industries in the future. D．The importance of developing technology.；7. What does the author advise baby boomers to do?A．Have a good sense of crisis. B．Avoid retiring at an early age. C．Look for many part-time jobs. D．Improve digital literacy actively.CGrowing up as kids we are told to share our toys and not to be selfish. We also live in an age when discussing our feelings is encouraged. But when does it all become toomuch? With new crazes trending all the time, such as dance challenges and wearing a carpet as a dress, the question is: when can sharing become oversharing on social media?“Oversharing” has become associated with social media, but it isn't exclusive to this platform. Imagine you head to a party and meet x k w someone. Within five minutes they have revealed private details about their life. While some of us may try to escape these people, according to marriage advisor Carolyn Cole, this form of oversharing could come from a strong desire to connect with someone. But how does this translate to social media?Dr. Christopher Hand, a lecturer in cyberpsychology (网络心理学），says the more details people disclose, the less sympathy we express when things go wrong. It seems that searching for sympathy by oversharing is generally considered as negative rather than the cry for help it could really be.However, Dr. Hand's research also seems to suggest that the more we post on a platform, the more socially attractive we become-provided that the posts that we bang out are positive. Even back in 2015, Gwendolyn Seidman PhD said that we should avoid complaining and being negative online. We should also avo id showing off, especially about our love lives. It makes sense-if your date is going “that well", would you really have time to share a photo with text?So, how can you know if you are oversharing? Well, why not ask your friends in real life. They would probably be happy to tell you if your posts about your breakfast or your complaints about your lack of money really are too much.；8. What does the underlined word “exclusive" in paragraph 2 mean?A．Unique.B．Similar.C．Relevant.D．Fundamental.；9. Why do some people prefer oversharing at parties?A．To draw others' attention.B．To satisfy others' curiosity.C．To remove negative feelings.D．To develop good relationships.；10. Which of the following may Dr. Hand agree with?A．Sharing more details online can attract more sympathy.B．Oversharing negative experiences is equal to crying for help.C．Sharing negative posts can't help one become socially attractive.D．Oversharing isn't likely to happen online when things go wrong.；11. According to the text, what should be avoided for online sharing?A．Reflecting on past bad manners.B．Showing a great many expensive goods.C．Writing a recipe for a balanced breakfast.D．Recording unforgettable moments with friends.二、七选五阅读For most Americans, the weeks between Thanks giving and New Year’s Day are a time when we’re eating more than we should. 12 The problem wasn’t really thesmall weight increase but that study participants never lost what they put on during the holiday season.So, how do you avoid gaining weight without missing out on the holiday fun? There are several small changes we can make.We have to make time to exercise. With all the shopping that needs to be done and the holiday get-togethers, the first thing cut out of our schedules is often exercise. 13 Exercise not only burns off those holiday treats, it reduces our stress as well.14 Allow yourself to enjoy the foods you really love, but choose wisely and watch your portion (份额) size. If you’ve looked forward to Aunt Sally’s Christmas cookies all year, have one. Mindful eating is the key. Take a small portion of your favorite dessert or high-calorie dish and then enjoy it.Try never to go to a holiday celebration hungry. When you are really hungry, you tend to eat more than you normally would. 15 Then you’ll find it easier to control how much you eat.Weigh yourself at least once a week on the same day, at the same time and on the same scale (称). It’s important to keep in mind that our weight can change because of salt intake or other factors. 16A．Mind your table manners while eating.B．You don’t need to give up all of the holiday goodies.C．However, knowing your weight helps to keep you on track.D．Have a high-fiber, low-calorie snack before attending a party.E．A study found participants gained just over a pound during this time.F．Instead, this is the time we should put working out at the top of our to-do list. G．Researchers suggest people eat smaller meals more times during the course of the day.三、完型填空Sammie Vance approached her principal at Haley Elementary with the idea of installing “buddy benches” into her school playground to help others feel less lonely. The principal 17 of the idea. But wooden benches are18 . Just one would be worth nearly a thousand dollars. However, a bench made of 19 bottle caps would only be around $250. So Sammie 20 others in her community to collect enough caps to make one bench. 21 , she managed to get bottle caps from 50 states. And th us, the initiative of “Sammie’s Buddy Bench Project” was 22 .Pretty soon, Sammie’s Buddy Bench Project began commanding the 23 of several news media. For her amazing efforts, Sammie has been chosen the receiver of several 24 and was 25 one of People magazine’s “Girls Changing the World”. And 26 , more than 200 bottle cap buddy benches have been around at schools and parks across the country, plus Mexico and Australia.This is, of course, not just a beautiful story ab out helping others. It’s also a major win for 27 . It is reported that 1.3 billion bottle caps are used each year. These caps cannot be recycled in the same way along with plastic bottles 28 each has a different melting point, and when they are 29 in, it can ruin an entire batch (一批). And that’s when they get discarded. Millions of caps have been found in our 30 alone, whichcan be devastating to marine life. In fact, it’s one of the leading 31 of death. It’s big carin g hearts like Sammie’s that help our planet heal against damage.17. A．complained B．allowed C．approved D．spoke18. A．costly B．heavy C．productive D．valueless19. A．reviewed B．recreated C．removed D．recycled20. A．kept track of B．reached out to C．sang high praises for D．got rid of21. A．Unfortunately B．Accordingly C．Apparently D．Eventually22. A．born B．promoted C．obtained D．commented23. A．attraction B．attention C．acceptance D．admission24. A．campaigns B．contests C．assemblies D．awards25. A．nicknamed B．introduced C．defined D．named26. A．the other day B．to date C．by then D．until recently27. A．sustainability B．changeability C．adaptability D．visibility28. A．though B．as C．if D．when29. A．combined B．mixed C．involved D．fitted30. A．fields B．walls C．oceans D．rains31. A．explanations B．questions C．ways D．causes四、语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

2011—2012学年高三第二学期一次练兵限时训练物理试题（三）2012.03二、选择题（本题包括7小题，每小题给出的四个选项中，有的只有一个选项正确，有的有多个选项正确，全部选对的得4分，选对但不全的得2分，有选错的得0分）16．许多科学家在物理学发展过程中做出了重要贡献，下列说法正确的是（）A．牛顿总结出了万有引力定律并测出了引力常量，被后人称为称出地球的第一人B．奥斯特发现电流周围存在着磁场C．亚里士多德通过理想实验提出力并不是维持物体运动的原因D．库仑总结出了真空中两个静止点电荷之间的相互作用规律17．如图所示，将质量为m=0.1kg的物体用两个完全一样的竖直弹簧固定在升降机内，当升降机以4m/s2的加速度加速向上运动时，上面弹簧对物体的拉力为0.4N；当升降机和物体都以8m/s2的加速度向上运动时，上面弹簧的拉力为（）A．0.6N B．0.8N C．1.0N D．1.2N18．“嫦娥二号”卫星发射时，长征三号丙火箭直接将卫星由绕地轨道送入200km～38×104km的椭圆奔月轨道，减少了多次变轨麻烦，及早进入绕月圆形轨道，则在“嫦娥奔月”过程中，下列叙述正确的是（）A．离开地球时，地球的万有引力对卫星做负功，重力势能增加；接近月球时月球引力做正功，引力势能减小B．在绕地轨道上，卫星在200km近地点时有最大动能C．在进入不同高度的绕月轨道时，离月球越近，运动的线速度越大，角速度越小D．在某个绕月圆形轨道上,如果发现卫星高度偏高,可以通过向前加速实现纠偏19．如图，一理想变压器原副线圈匝数之比为4：1 ，原线圈两端接入一正弦交流电源；副线圈电路中R为负载电阻，交流电压表和交流电流表都是理想电表．下列结论正确的是（）A．若电压表读数为6V，则输入电压的最大值为VB．若输入电压不变，副线圈匝数增加到原来的2倍，则电流表的读数减小到原来的一半C．若输入电压不变，负载电阻的阻值增加到原来的2倍，则输入功率也增加到原来的2倍D．若保持负载电阻的阻值不变．输入电压增加到原来的2倍，则输出功率增加到原来的4倍20．如图所示，在两等量异种点电荷的电场中，MN为两电荷连线的中垂线，a、b、c三点所在直线平行于两电荷的连线，且a与c关于MN对称，b点位于MN上，d点位于两电荷的连线上。

高三英语限时训练一总分65分第一部分：阅读理解（共两节，满分30分）第一节（共7个小题：每小题2.5分，满分17.5分）AWhat do the random, scribbled(潦草的)drawings crowding the margins(页边空白)of most high school students’ papers mean? When a student is caught doodling(乱画)in class, he will probably be criticized for daydreaming. But doodling while listening can help with remembering details, rather than implying that the mind is wandering, according to a study published in the scientific journal Applied Cognitive Psychology.In an experiment conducted b y the Medical Research Council’s Cognition and Brain Sciences Unit in Cambridge,40 subjects were asked to listen to a two-minute tape giving several names of people and places. Half of the participants were asked to shade in shapes on a piece of paper at the same time, without paying attention to neatness, while the rest were given no such instructions. After the tape had finished, all participants in the study were asked to recall the names of people and places. The doodlers recalled on average 7.5 names of people and places, compared to only 5.8 by the non-doodlers.“If someone is doing a boring task, like listening to a dull telephone conversation, they may start to daydream.” said study researcher, Professor Jackie Andrade, of the School of Psychology, U niversity of Plymouth. “Daydreaming distracts them from the task, resulting in poorer performance. A simple task, like doodling, may be enough tostop daydreaming without affecting performance on the main task.”“In psychology, tests of memory or attention will often use a second task to selectively block a particular mental process. If that process is important for the main task, then performance will be weakened. But my research suggests that in everyday life doodling may be something we do because it helps to keep us on track with a boring task, rather than being an unnecessary distraction(分心)that we should try to resist doing.” said Andrade.Dan Ware, a social study teacher, used to consider doodling a distraction from learning, but after teaching kids with all personality types he learned scribbling away during lectures helps certain students remember more information. “In my first few years of teaching, I thought, ‘Well, this kid isn’t paying attention. He’s daydreaming.’ But I had some really powerful experiences with students and came to understand in many cases that was their way of focusing, and those students were probably paying more attention than other students.” Ware said.1. What do we know about the participants involved in the experiment?A. Some were asked to note down the information neatly.B. Some were asked to memorize the names they would hear.C. Some were instructed to listen to the tape with full attention.D. Some were instructed to make random drawings on paper.2. Which of the following will both Jackie Andrade and Dan Ware agree with?A. Doodling helps some people focus.B. Doodling makes a dull task interesting.C. Students who doodle perform poorly.D. Students who doodle lack concentration.3. What is the best title of the text?A. Daydreaming Can Sharpen Study SkillsB. Doodling Can Help Memory RecallC. A Wandering Mind Improves ProductivityD. Distractions Harm Academic PerformanceBShyness is the cause of much unhappiness for a great many people. Shy people are anxious and self-conscious; that is, they are concerned about their own appearance and actions too much. Negative thoughts are constantly occurring in their minds: What kind of impression am I making? Do they like me? Do I sound stupid? Am I wearing unattractive clothes?It is obvious that such uncomfortable feelings must affect people unfavorably. A person’s self-concept is reflected in the way he or she behaves and the way a person behaves affects other people’s reactions. In general, the way people think about themselves has a deep effect on all areas of their lives.Shy people, who have low respect, are likely to be passive and easily influenced by others. They need faith that they are doing ＂the right thing＂. Shy people are very sensitive to criticism. It makes them feel inferior(自卑). They also find it difficult to be pleased by praises because they believe they are unworthy of praise. A shy person may respond to a praise with a statement like this one: ＂You’re just saying that to make me feel good. I kn ow it’s not true.＂It is clear that, while self-awareness is a healthy quality, overdoing it is harmful.Can shyness be completely got rid of, or at least reduced? Fortunately, people can overcome shyness with determination since shyness goes hand in hand with lack ofself-respect. It is important for people to accept their weaknesses as well as their strengths. Each one of us has his or her own characteristics. We are interested in our own personal ways. The better we understand ourselves, the easier it becomes to live up to our chances for a rich and successful life.4. The first paragraph is mainly about ____________. .A. the cause of shynessB. the effect of shyness on peopleC. the feelings of shy peopleD. the questions in the minds of shy people5. According to the writer, self-awareness is ____________.A. harmful to peopleB. a weak point of peopleC. the cause of unhappinessD. a good characteristic6. What is the shy people’s reaction to praise?A. They are pleased by it. B They feel it is not true.C. They are very sensitive to it.D. They feel they are worthy of it.7. We can learn from the passage that shyness ____________.A. blocks our chances for a successful lifeB. helps us to live up to our full developmentC. enables us to understand ourselves betterD. has nothing to do with lack of self-respect第二节七选五（共5小题，每小题2.5分，满分12.5分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

江苏省常州市金沙高级中学2021届高三下学期限时训练（一）英语试题第一部分：阅读理解（共两节，满分30分）第一节（共7个小题：每小题2.5分，满分17.5分）AWhat do the random, scribbled(潦草的)drawings crowding the margins(页边空白)of most high school students’ papers mean? When a student is caught doodling(乱画)in class, he will probably be criticized for daydreaming. But doodling while listening can help with remembering details, rather than implying that the mind is wandering, according to a study published in the scientific journal Applied Cognitive Psychology.In an experiment conducted by the Medical Research Council’s Cognition and Brain Sciences Unit in Cambridge,40 subjects were asked to listen to a two-minute tape giving several names of people and places. Half of the participants were asked to shade in shapes on a piece of paper at the same time, without paying attention to neatness, while the rest were given no such instructions. After the tape had finished, all participants in the study were asked to recall the names of people and places. The doodlers recalled on average 7.5 names of people and places, compared to only 5.8 by the non-doodlers.“If someone is doing a boring task, like listening to a dull telephone conversation, they may start to daydream.” said study researcher, Professor Jackie Andrade, of the School of P sychology, University of Plymouth. “Daydreaming distracts them from the task, resulting in poorer performance. A simple task, like doodling, may be enough to stop daydreaming without affecting performance on the main task.”“In psychology, tests of memory or attention will often use a second task to selectively block a particular mental process. If that process is important for the main task, then performance will be weakened. But my research suggests that in everyday life doodling may be something we do because it helps to keep us on track with a boring task, rather than being an unnecessary distraction(分心)that we should try to resist doing.” said Andrade.Dan Ware, a social study teacher, used to consider doodling a distraction from learning, butafter teaching kids with all personality types he learned scribbling away during lectures helps certain students remember more information. “In my first few years of teaching, I thought, ‘Well, this kid isn’t paying attention. He’s daydreaming.’ But I had some real ly powerful experiences with students and came to understand in many cases that was their way of focusing, and those students were probably paying more attention than other students.” Ware said.1. What do we know about the participants involved in the experiment?A. Some were asked to note down the information neatly.B. Some were asked to memorize the names they would hear.C. Some were instructed to listen to the tape with full attention.D. Some were instructed to make random drawings on paper.2. Which of the following will both Jackie Andrade and Dan Ware agree with?A. Doodling helps some people focus.B. Doodling makes a dull task interesting.C. Students who doodle perform poorly.D. Students who doodle lack concentration.3. What is the best title of the text?A. Daydreaming Can Sharpen Study SkillsB. Doodling Can Help Memory RecallC. A Wandering Mind Improves ProductivityD. Distractions Harm Academic PerformanceBShyness is the cause of much unhappiness for a great many people. Shy people are anxious and self-conscious; that is, they are concerned about their own appearance and actions too much. Negative thoughts are constantly occurring in their minds: What kind of impression am I making? Do they like me? Do I sound stupid? Am I wearing unattractive clothes?It is obvious that such uncomfortable feelings must affect people unfavorably. A person’s self-concept is reflected in the way he or she behaves and the way a person behaves affects other people’s reactions. In general, the way p eople think about themselves has a deep effect on all areas of their lives.Shy people, who have low respect, are likely to be passive and easily influenced by others. They need faith that they are doing ＂the right thing＂. Shy people are very sensitive to criticism. It makes them feel inferior(自卑). They also find it difficult to be pleased by praises because they believe they are unworthy of praise. A shy person may respond to a praise with a statement like this one: ＂You’re just saying that to make me feel good. I know it’s not true.＂It is clear that,. while self-awareness is a healthy quality, overdoing it is harmful.Can shyness be completely got rid of, or at least reduced? Fortunately, people can overcomeshyness with determination since shyness goes hand in hand with lack of self-respect. It isimportant for people to accept their weaknesses as well as their strengths. Each one of us has hisor her own characteristics. We are interested in our own personal ways. The better we understandourselves, the easier it becomes to live up to our chances for a rich and successful life.4. The first paragraph is mainly about ____________.A. the cause of shynessB. the effect of shyness on peopleC. the feelings of shy peopleD. the questions in the minds of shy people5. According to the writer, self-awareness is ____________.A. harmful to peopleB. a weak point of peopleC. the cause of unhappinessD. a good characteristic6. What is the shy people’s reaction to praise?A. They are pleased by it. B They feel it is not true.C. They are very sensitive to it.D. They feel they are worthy of it.7. We can learn from the passage that shyness ____________.A. blocks our chances for a successful lifeB. helps us to live up to our full developmentC. enables us to understand ourselves betterD. has nothing to do with lack of self-respect第二节（共5小题，每小题2.5分，满分12.5分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

高三文科数学 限时训练卷１（湖南）班次：_______姓名：_________考号：________8_____{6,8}___________9______9____________10_______6____________**********************************************************************一、选择题：1.复数z=i ·(1+i)(i 为虚数单位)在复平面上对应的点位于A .第一象限B .第二象限C .第三象限D .第四象限2.“1＜x ＜2”是“x ＜2”成立的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3.某工厂甲、乙、丙三个车间生产了同一种产品，数量分别为120件，80件，60件。

为了解它们的产品质量是否存在显著差异，用分层抽样方法抽取了一个容量为n 的样本进行调查，其中从丙车间的产品中抽取了3件，则n=A .9B .10C .12D .134.已知f （x ）是奇函数，g （x ）是偶函数，且f （－1）+g （1）=2，f （1）+g （－1）=4，则g （1）等于A .4B .3C .2D .15.在锐角∆ABC 中，角A ，B 所对的边长分别为a ，b. 若2asinB=3b ，则角A 等于A .3πB .4πC .6π D .12π 6.函数f （x ）=㏑x 的图像与函数g （x ）=x 2-4x+4的图像的交点个数为A.0B.1C.2D.37.已知正方体的棱长为1，其俯视图是一个面积为1的正方形，侧视图是一个面积A ．B.1二、填空题：８.已知集合{2,3,6,8},{2,3},{2,6,8}U A B ===,则()U C A B ⋂=_____________ ９.执行如图1所示的程序框图，如果输入a=1,b=2,则输出的a 的值为______１０.若变量x,y 满足约束条件28,04,03,x y x y +≤⎧⎪≤≤⎨⎪≤≤⎩则x+y 的最大值为________。

高三英语晚自习限时训练【3月31日晚限制：不超过65-70分钟】一、六选四阅读1. Complete the following passage by using the sentences given below. Each sentences can be used only once. Note that there are two more sentences than you need.Can just one person make a difference? You bet! In a community every person counts, and getting involved is not difficult. Take stock of your own talents and interests. Don't wait for someone else to act first. Take the initiative! Once you see what you can accomplish, you'll want to keep going.Here are just a few ways to make a difference in your community. How many more ways can you come up with?Clean up the community. People often throw litter in places where there is already litter. And the problem only becomes worse until someone gets fed up and does something. Could your neighborhood use a cleanup? Neighborhood cleanups are often sponsored by local businesses or schools. But if your community doesn't have a cleanup program, get together with friends to organize one. You could pick up garbage in a larger area twice a year, or you could clean a smaller area every few months.Include the isolated. Do you know anyone who is housebound? Almost all neighborhoods have a few people who have to stay at their homes. These people are often elderly and unable to leave their homes to perform simple tasks. By letting them "borrow" your legs and eyes, you can make them feel included. You can run errands for them like shopping or paying bills. They might like you to read to them if their eyesight is failing. Governments provide some of the services these people need, but programs cannot give them friendship; that's what communities are for!Reading clubs are popular all over Europe and North America. Members might read at home to prepare for discussion, or they might read aloud to each other and talk about what they just read. Either way, a book or article can spark lively discussion and this often challenges people to take action.A. Cleaning your community will have a positive effect on others in society.B. They find a need or an issue you really care about.C. But they belong to the community, too.D. Living in a clean neighborhood will be its own reward.E. Don't hesitate to take part in the community's activity.F. Round up some readers.二、语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

2021年高三数学上学期限时训练（1）一、 填空题：本大题共14小题，每小题5分，共70分．1．若复数满足（是虚数单位），则 ．2．已知集合A = {－1，0，1}，B = {0，1，2，3}，则A ∩B = ．3．若以连续掷两次骰子得到的点数分别作为点P 的横、纵坐标，则点P 在直线上的概率为 ．4．已知且，则 ．5．已知定义域为的函数是奇函数，则 ．6．右图是一个算法的流程图，则输出S 的值是 ．7．在中，已知，，则＝ ．8．在样本的频率分布直方图中，共有9个小长方形，若第 一个长方形的面积为0.02，前五个与后五个长方形的 面积分别成等差数列且公差是互为相反数，若样本容量 为1600，则中间一组（即第五组）的频数为 ． 9.在平面直角坐标系中，直线被圆截得的弦长为 .10．函数，且）的图象恒过点A ，若点A 在直线上，其中，则的最小值是 ．11．已知是等差数列的前项和，若，，则数列的前20项和为 ．12．已知三棱锥的所有棱长都相等，现沿，，三条侧棱剪开，将其表面展开成一个平面图形，若这个平面图形外接圆的半径为，则三棱锥的体积为 ．13.已知是定义在R 上且周期为3的函数,当时,.若函数在区间上有10个零点(互不相同),则实数的取值范围是 .14．设a 、b 均为大于1的自然数，函数，，若存在实数k ，使得，则 ． 二、解答题：本大题共六小题，共计90分．请在指定区域内作答，解答时应写出文字说明、证明过程或演算步骤． 15．（本小题满分14分）样本数据频率组距第 8 题图开始结束是否100k ≥3s s k←+1,0k s ←←S输出2k k ←+第6题图已知分别为三个内角的对边，（1）求 （2）若，的面积为；求.16．（本小题14分）如图，四棱锥中，⊥底面，⊥．底面为梯形，，，，点在棱上，且． （1）求证：平面⊥平面； （2）求证：∥平面．17．（本小题满分14分）如图，在平面直角坐标系xOy 中，分别是椭圆的左、右焦点，顶点B 的坐标为，连结并延长交椭圆于点A ，过点A 作x 轴的垂线交椭圆于另一点C ，连结． （1）若点C 的坐标为，且，求椭圆的方程；PAD B CE（2）若，求椭圆离心率e的值．18．（本小题满分16分）如图，在海岸线l一侧C处有一个美丽的小岛，某旅游公司为方便游客，在l上设立了A，B 两个报名点，满足A，B，C中任意两点间的距离为10 km.公司拟按以下思路运作：先将A，B 两处游客分别乘车集中到AB之间的中转点D处(点D异于A，B两点)，然后乘同一艘游轮前往C岛．据统计，每批游客A处需发车2辆，B处需发车4辆，每辆汽车每千米耗费2元，游轮每千米耗费12元．设∠CDA＝α，每批游客从各自报名点到C岛所需运输成本为S元．(1)写出S关于α的函数表达式，并指出α的取值范围；(2)问：中转点D距离A处多远时，S最小？19．（本小题满分16分）已知数列中，，，其前项和满足,其中，．（1）求证；数列为等差数列，并求其通项公式；（2）设，为数列的前n项和，求使>2的n的取值范围．（3）设为非零整数，），试确定的值，使得对任意，都有成立．20.（本小题满分16分） 已知函数，. (1)求的最大值；(2)若关于的不等式对一切恒成立，求实数的取值范围；(3)若关于的方程恰有一解，其中是自然对数的底数，求实数的值.淮海中学xx 届高三Ⅲ级部第一学期数学限时训练（1）参考答案一.填空题： 1．； 2．{0，1}； 3．； 4．； 5．2； 6．7500；7．4； 8．360； 9．； 10．8 ； 11．55；12．； 13．(0，1/2) 14．4 二、解答题 15．【答案】（1）由正弦定理得：cos sin 0sin cos sin sin sin a C C b c A C A C B C +--=⇔-=+sin cos sin sin()sin 1cos 1sin(30)2303060A C A C a C CA A A A A ︒︒︒︒⇔=++⇔-=⇔-=⇔-=⇔=----------------------7分 （2）----------------------7分 16.解析：（1）∵PA ⊥底面ABCD ，∴，又AB ⊥BC ，，∴⊥平面． 又平面，∴平面⊥平面． ----------------------7分（2）∵PA ⊥底面ABCD ，∴AC 为PC 在平面ABCD 内的射影．又∵PC ⊥AD ，∴AC ⊥AD ． 在梯形中，由AB ⊥BC ，AB =BC ，得， ∴．又AC ⊥AD ，故为等腰直角三角形． ∴．连接，交于点，则 在中，，∴ 又PD 平面EAC ，EM 平面EAC ，∴PD ∥平面EAC ． ----------------------7分 17. 【答案】本小题主要考查椭圆的标准方程与几何性质、直线与直线的位置关系等基础知识，考查运算求解能力. 满分14分. （1）∵，∴∵，∴，∴ ∴椭圆方程为 （2）设焦点∵关于x 轴对称，∴ ∵三点共线，∴，即① ∵，∴，即②①②联立方程组，解得 ∴ ∵C 在椭圆上，∴， 化简得，∴, 故离心率为18.解：(1)由题知在△ACD 中，∠CAD ＝π3，∠CDA ＝α，AC ＝10，∠ACD ＝2π3－α.由正弦定理知CD sin π3＝AD sin ⎝ ⎛⎭⎪⎫2π3－α＝10sin α，………2分即CD ＝53sin α，AD ＝10sin ⎝ ⎛⎭⎪⎫2π3－αsin α，………4分所以S ＝4AD ＋8BD ＋12CD ＝12CD －4AD ＋80＝603－40sin ⎝ ⎛⎭⎪⎫2π3－αsin α＋80 ………6分＝203·3－cos αsin α＋60⎝ ⎛⎭⎪⎫π3＜α＜2π3.………8分(2)S ′＝203·1－3cos αsin 2α，令S ′＝0得cos α＝13. ………10分当cos α＞13时，S ′＜0；当cos α＜13时，S ′＞0，………12分所以当cos α＝13时，S 取得最小值，………14分此时sin α＝223，AD ＝53cos α＋5sin αsin α＝20＋564，所以中转点D 距A 处20＋564km 时，运输成本S 最小．………16分19． （本题满分16分）已知数列中，，，其前项和满足,其中，．（1）求证；数列为等差数列，并求其通项公式；（2）设，为数列的前n 项和，求使>2的n 的取值范围； （3）设为非零整数，），试确定的值，使得对任意，都有成立． 解：（1）由已知，（，）， ………………2分即（，），且．∴数列是以为首项，公差为1的等差数列．∴．……………………………………………………………………………4分 (2) ∵，∴21231111123(1) (1)22221111123(1)..........(2)22222n n n n n n T n n T n n -+∴=⨯+⨯++⋅++⋅=⨯+⨯+⋅⋅⋅+⋅++23111111(1)(2)1(1)22222n n n T n +-=++++-+⋅得： ∴ …………………………………………………6分代入不等式得： 设022)()1(,123)(1<+-=-+-+=+n n n n f n f n n f 则 ∴在上单调递减， ………………………………………………8分∵041)3(,041)2(,01)1(<-=>=>=f f f ， ∴当n =1,n=2时,，所以n 的取值范围．为 …………………………………………10分 （3）,要使恒成立，即1211144(1)2(1)20n n n n n n n n c c λλ++-++-=-+--->恒成立，恒成立，∴恒成立，…………………12分（i ）当为奇数时，即恒成立，当且仅当时，有最小值为，．（ii ）当为偶数时，即恒成立，当且仅当时，有最大值， ．即，又为非零整数，则．…………………15分综上所述：存在，使得对任意的，都有．……………16分20．（1）因为，所以，…………………………………2分 由，且，得，由，且，，…………………4分 所以函数的单调增区间是，单调减区间是，所以当时，取得最大值；………………………………………………………6分 （2）因为对一切恒成立， 即对一切恒成立，亦即对一切恒成立，…………………………………………8分 设，因为，故在上递减，在上递增， ，所以． …………………………………………………………………………10分 （3）因为方程恰有一解，即恰有一解，即恰有一解， 由（1）知，在时，，…………………………………………12分c3427585E3 藣O33913 8479 葹38293 9595 閕40164 9CE4 鳤\32127 7D7F 絿22219 56CB 囋U29001 7149 煉30341 7685 皅$36592 8EF0 軰。

高三物理周末限时训练（一）--2012/11/29 训练内容：力学+电场训练题型：选择题15个+3个计算题时间：90分钟一、选择题(本题包括15个小题，共60分。

)1．游乐园中，游客乘坐能加速或减速运动的升降机，可以体会超重或失重，下列描述正确的是A．当升降机加速上升时，游客是处在失重状态B．当升降机减速下降时，游客是处在超重状态C．当升降机减速上升时，游客是处在失重状态D．当升降机加速下降时，游客是处在超重状态2．如图所示，一个小孩从粗糙的滑梯上加速滑下，对于其机械能的变化情况，下列判断正确的是A．重力势能减小，动能不变，机械能减小B．重力势能减小，动能增加，机械能减小C．重力势能减小，动能增加，机械能增加D．重力势能减小，动能增加，机械能不变3．轿车行驶时的加速度大小是衡量轿车加速性能的一项重要指标。

近年来，一些高级轿车的设计师在关注轿车加速度的同时，提出了一个新的概念，叫做“加速度的变化率”，用“加速度的变化率”这一新的概念来描述轿车加速度随时间变化的快慢。

轿车的加速度变化率越小，乘坐轿车的人感觉越舒适。

下面四个单位中，适合做加速度变化率单位的是A．m／s B．m／s2C．m／s3D．m2／s34．A、B两质点分别在各自的直线轨道上运动，图甲是质点A的位移随时间变化的图象，图乙是质点B的速度随时间变化的图象，下列说法中正确的是A．质点A在0～2s内的平均速度为零B．质点B在0～2s内的平均速度为零C．质点A在0～1s内的运动方向与在1～2s内的运动方向相反D．质点B在0～1s内的运动方向与存1～2s内的运动方向相反5．从三业飞往济南的波音737航班，到达遥墙国际机场，降落的速度为60m／s，然后以加速度大小为5m／s2做匀减速直线运动，则飞机在第14秒内的位移为A．350m B．180m C．0m D．1330m6．如图所示，用一与水平方向成α的力F拉一质量为m的物体，使它沿水平方向匀速移动距离s，若物体和地面间的动摩擦因数为μ，则此力F对物体做的功，下列表达式中正确的有A．FscosαB．μmgsC．μmgs／(cosα-μsinα)D．μmgscosα/(cosα+μsinα)7．如图所示，质量为m=1kg的物体与水平地面之间的动摩擦因数为0.3，当物体运动的速度为10m／s时，给物体施加一个与速度方向相反的大小为F=2N的恒力，在此恒力作用下(取g=10m／s2)A ．物体经10s 速度减为零B ．物体经2s 速度减为零C ．物体速度减为零后将保持静止D ．物体速度减为零后将向右运动8．如图，水平传送带A 、B 两端相距S=3.5m ，工件与传送带间的动摩擦因数μ=0.1。

高三英语限时训练一、阅读理解A7-Day Tour from London to EdinburghA London guide will show you the city’s famous landmarks like Buckingham Palace, Downing Street and Westminster Abbey. Then, in Edinburgh, you’ll tour the castle and see Scotland’s Crown Jewels. From the historical sights to the beautiful scenery, this guided tour of England and Scotland is a great way to experience everything Britain has to offer.Starting at: $849 per person9-Day Tour from Dublin to LondonYour guided tour of Ireland and Britain begins in the capital cityof Dublin. Enjoy seeing the “Fair City”, including the statue-lined O’Connell Street, Trinity College, and St. Patrick’s Cathedral. Your local guide will show you the famous sights, including the Houses of Parliament, Big Ben, Westminster Abbey and Buckingham Palace. This guided tour of Ireland and Britain is a welcome escape with fewer crowds and lower costs than high-season tours.Starting at: $1069 per person7-Day Tour from London to ParisYour guided vacation in London begins with a welcome dinner and a cruise on the Thames River to admire the Tower Bridge and the Houses of Parliament. You’ll spend three nights in London to see the sites ofthis historic city—from Big Ben to Buckingham Palace, and also St. Paul’s Cathedral. Then you’ll enjoy a 3-night stay in Paris. This includes sightseeing at the Arc de Triomphe, Concorde Square, Champs-Elysees, and a Seine cruise. This guided tour of London and Paris is certain to be enjoyable with fewer crowds in the off-season!Starting at: $1149 per person1. How much would a couple pay for the 7-day tour from London to Edinburgh?A．$849. B．$1149. C．$1698. D．$2138.2. Which place can you visit if you take the 9-day tour from Dublin to London?A．Downing Street. B．Trinity College. C．The Thames River. D．Concorde Square.3. What do the three tours have in common?A．They are all guided tours for visitors.B．People will spend the same amount of time.C．They all begin in the capital city of London.D．People can enjoy the same number of sights.BRace walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rulesrequire that a race walker’s knees stay straight through most of theleg swing and one foot remain in contact (接触) with the ground at all times. It’s this strange form that makes race walking such anattractive activity, however, says Jaclyn Norberg, an assistantprofessor of exercise science at Salem State University in Salem, Mass.Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon amo ng race walkers. But thesport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to becautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.4. Why are race walkers conditioned athletes?A．They must run long distances.B．They are qualified for the marathon.C．They have to follow special rules.D．They are good at swinging their legs.5. What advantage does race walking have over running?A．It’s more popular at the Olympics.B．It’s less challenging physically.C．It’s more effective in body building.D．It’s less likely to cause knee injuries.6. What is Dr. Norberg’s suggestion for someone trying race walking? A．Getting experts’ opinions.B．Having a medical checkup.C．Hiring an experienced coach.D．Doing regular exercises.7. Which word best describes the author’s attitude to race walking? A．Skeptical. B．Objective.C．Tolerant. D．Conservative.CAn unconventional method for growing rice has been found to increase yields(产量) by 20 to 50 percent. Reports from China, India, Southeast Asia and Africa suggest that average yield increases of 20 to 50 percent are regularly being achieved by farmers adopting the "system of rice intensification(集约化)"(SRI)，which needs one-tenth as many seeds and aims to stimulate the root system of plants rather than trying to increase yields in the conventional way by using improved seeds and fertilizers.The idea of using less to gain more is seen as an important innovation(革新) for adapting farming to climate change and a way to increase yields at a time when human populations are growing fast but traditional plant breeding and genetically modified techniques have failed to increase yields more than a few percentage points, says Norman Uphoff, professor of international agriculture at Cornell.The new way to grow rice needs only half as much water, and is proving most popular in water-stressed countries, says Tavseef Mairaj Shah, a Ph.D．researcher. "Rice growing in Kashmir largely depends on irrigation systems that draw water from the river Jhelum. But climate change is leading to drier winters, untimely rains, and warmer summers."“SRI is a great technique, not just from the water-savingperspective but because it offers better yields and soil conditions. Different studies, both at the experimental level and farmer-participative level, have shown that SRl improves yields with less water.” Shah adds.Some academic, the global seed industry and the international community once rejected reports of “fantastic” yields, accusingfarmers of falsifying(篡改）records and researchers of carelessness and "non-science". But more than 600 articles, checked by SRI Internationalat Cornell University, have shown benefits.Uphoff says, “Attitudes are changing.The original hostility(敌意)has gone." However, the early opposition has resulted in comparativelylittle scientific research being conducted into SRI and a slow understanding by funders.8. How does SRI increase the yields of rice?A．By sowing more seeds B．By using improved seeds.C．By improving its root system. D．By adopting special fertilizers. 9. Compared with the conventional method for growing rice, SRI.A．needs less water B．increases labor costsC．requires better soil conditions D．depends on genetically modified techniques10. What was the global seed industry's initial attitude toward reportson SRI?A．Curious B．Skeptical. C．Approving D．Uninterested. 11. Which of the following can be the best title of the passage?A．How to Increase YieldsB．People's Attitudes Towards SRIC．An Innovative Means of Growing RiceD．The Disadvantages of Conventional Plant Breeding二、完形填空A Florida man likes to shop at garage sales for old plaques(纪念匾)so he can reuse the wooden backs. Recently, he was looking through a 12 he bought years ago when one 13 a small ball caught hiseye.The man took a moment to 14 what was written on the plaque and quickly realized there was a 15 stone inside the ball-a piece ofmoon rock brought back on the Apollo 17 mission in 1972. The plaque and rock had been a 16 to the state of Louisiana by then-President Richard Nixon but 17 ended up in a garage sale for the man to find years later.“I can’t even tell you how long I 18 i t for. I’m not evensure how much I 19 for it. The wood in the plaques is such nicewood and that is what I 20 them for," the man said. The man 21 t he Louisiana governor’s office, which 22 him to the LouisianaState Museum. The man hand-delivered his 23 to the Louisiana State Museum. He didn’t want to take a chance that something might happen toit during 24 .The museum’s director is 25 for hisgenerosity and 26 for reuniting the state with this priceless object. “It is an extraordinary piece of Louisiana history,” he said. “We’re 27 to take possession of this piece and to share it withour audiences.”After Apollo 17 28 on Earth, Nixon 29 379 pieces of the satellite stone to all the states as well as foreign nations. Over time, those gifts began to 30 A 2002 search found that many were unaccounted for. To date, the fate(命运)of 171 rocks remains 3112. A．painting B．ball C．book D．collection13. A．linking B．featuring C．sharing D．obtaining14. A．read B．stress C．think D．remember15. A．normal B．new C．precious D．similar16. A．gift B．signal C．threat D．change17. A．sometimes B．somehow C．instead D．never18. A．borrowed B．returned C．owned D．lost19. A．paid B．earned C．saved D．charged20. A．carry B．prepare C．push D．buy21. A．passed B．contacted C．recognized D．trusted22. A．attracted B．added C．pointed D．reported23. A．work B．find C．receipt D．letter24. A．delivery B．discovery C．construction D．treatment25. A．eager B．responsible C．famous D．grateful26. A．reason B．demand C．concern D．claim27. A．likely B．free C．embarrassed D．excited28. A．landed B．existed C．wandered D．failed29. A．threw away B．put aside C．turned in D．handed out30. A．improve B．disappear C．drop D．matter31. A．unforgettable B．unacceptable C．unknownD．undoubted三、七选五阅读I love learning foreign languages so much that I learn a new language every two years. When people find I’m a polyglot(通晓多种语言的人)，they always ask me,“How do you do that?” Honestly, my answerwill be, “I don’t know. I simply love learning languages.” 32 They want to know why they spend years learning even one language, never achieving fluency, and what’s the secret of being polyglots.33 And what do we have in common? I decided to find that out. I went to several events where language lovers gather to practice their languages, asked dozens of polyglots about methods they use, and heard dozens of approaches. Everybody seems to have a unique way to speak several languages fluently.34 All these polyglots talked about language learning as if it was great fun. They found ways to turn language learning from aboring subject into a pleasant daily activity. You should have seentheir faces when they were showing me their colorful grammar charts and handmade flash cards. 35 The methods are various, but they make sure it’s something enjoyable.I realized it’s actually how I learn. 36 Then interesting programs became my choice. So all is clear. If you don’t like writing words down on paper, type them in an app. If you’re a shy perso n, apply self-talk at home. This is how polyglots learn languages, and the best news is that it’s available to anyone willing to take the learning into their own hands.A．How can those with little talent be fluent?B．But people are never happy with the reply.C．There’s no shortcut to learning languages for anyone.D．One of them even made recipes in a foreign language.E．That made me wonder, too, how other polyglots actually do it. F．When learning Spanish last year, I was bored with textbooks. G．Polyglots simply found ways to enjoy the language-learning process.四、语法填空阅读下面短文, 在空白处填人1个适当的单词或括号内单词的正确形式.May 21st this year marks the first International Tea Day, which37 (name) by the United Nations on November 27th, 2019. To celebrate38 festival, a number of events took place at the ChineseBusinessman Museum in Beijing on Thursday.The chairman of the China Culture Promotion Society addressed the opening ceremony.“As a main promoter of the International Tea Day,the birthplace of tea and the 39 (large) tea-producing country, China has a 40 (responsible) to work with other countries to promote the healthy development of the tea industry. It can help tobuild a community with a shared future 41 mankind,” he said.Th e “First International Tea Day Tea Road Cooperative Initiative” issued (发布) at the ceremony calls for people working in the teaindustry to come together to promote (促进） international cooperation 42 cultural exchanges. A four-year tea promotion-Tea RoadCooperative Plan-was also issued in accordance with the initiative.___42___ (strengthen) the connection with young people, the event included a number of public promotional activities on social media,___43___( invite ) twenty-nine tea professionals from around the worldto have thirty-six hours of uninterrupted live broadcasts.The Chinese Ancient Tea Museum was 43 (official) unveiled(揭幕) at the ceremony, opening 44 (it) first exhibition: The Avenue of Truth - A Special Exhibition o f Pu’er Tea.五、应用文写作47. 假定你是李华，你校将举办以“English Literature Reading”为主题的英语原阅读活动，请你用英语为本次活动写一则宣传稿，内容包括：(1)活动目的；(2)活动安排；(3)发出号召。

完型阅读限时训练My husband and I only have one car. So after work I always walk to his office and wait for him to drive me home.One day, while I was waiting for him, a beautiful Cadillac 31 near me. I was busily admiring the car when I 32 the driver. Honestly, she was probably the 33 woman I had ever seen outside of a movie screen. Her eyes were as blue as the sea, and she had 34 like an even row of pearls. Minutes later, a man came out of the building and walked over to her. They kissed and drove off.Sitting there, 35 in jeans and a T-shirt, I wanted to cry. It is so 36 that some people have it all.The next week I saw her again, and after that it became almost 37 to see her. I would 38 if she and her husband ate out a lot and where they went. I wanted her to 39 the car so I could see her in full length. Did she 40 classy, high-heeled shoes?A few weeks later this question was 41 for me.I was waiting in my usual spot and the lady’s husband came over to their car. He open ed the door. 42 the pretty woman walked around to the passenger side--- 43 on a walking cane. She 44 one leg with her hands and then the other one; she had a prosthetic(假肢) on her left leg and a brace(支架)on her right one.As they drove away I began to cry. When my husband arrived I told him about what had45 . He said he knew her husband and that, when the lady was 12 years old, she had been 46 ina car that got stuck on the railroad tracks. Both her parents were killed. The rail company made a large 47 with her because the crossing had no 48 ; that is why she owned such a nice car.For weeks I had 49 this woman and her way of life. Now I realize how lucky I am. When you meet a person who seems to be much better off than you, don’t be 50 by appearances.31. A. rang up B. sped up C. went up D. pulled up32. A. noticed B. recognized C. watched D. greeted33. A. proudest B. prettiest C. wealthiest D. luckiest34. A. ears B. hairs C. teeth D. fingers35. A. covered B. wrapped C. dressed D. put36. A. unfair B. lonely C. surprising D. touching37. A. strange B. boring C. stressful D. routine38. A. ask B. doubt C. wonder D. expect39. A. stay away from B. get out of C. stay in D. pick up40. A. purchase B. like C. wear D. take41. A. raised B. presented C. handled D. answered42. A. Immediately B. Slowly C. Angrily D. Curiously43. A. putting B. burning` C. leaning D. carrying44. A. skipped B. patted C. pressed D. lifted45. A. disappeared B. happened C. mistaken D. changed46. A. limited B. left C. knocked D. trapped47. A. arrangement B. fortune C. settlement D. contract48. A. signals B. stations C. passengers D. announcement49. A. ignored B. envied C. respected D. understood50. A. prevented B. limited C. blocked D. fooledAAt first, Rhonda Tormaschy thought her 16-year-old daughter, Cassidy, was joking about opening up an ice cream truck. “We were sitting around one night with her and one of her friends and this is what she approached us with and we kind of thought she wasn’t serious at first,” Rhonda said.But last fall her husband, Chad, started looking for some type of truck, and they found an old school bus in Lincoln, Oregon.The family spent the winter fixing the bus, painting it and transforming it into Ice Cream Express. In order to turn the small, old school bus into an ice cream truck, the family put in a freezer, fridge and sink.“Getting it together was kind of an experience for all of us,” Rhonda said. “We had to go through the health inspector, we had to get signatures from the police department and the fire department.”“The community needed something to lighten up their day and make their day better,” Cassidy said. “I thought that this would be a good way to help everybody through their day.”She visits local businesses at a set time every Thursday and plans to hit up neighborhoods and parks in the evening, as well as serving ice cream at other summer events.Ice Cream Express serves Schwan’s products. “It’s quite a variety,” Cassidy said. “We have everything from the sundae cones to the sandwiches and Italian ice --- just about anything.”Now that the truck is up and running, Cassidy hopes her younger sisters will take it over when she leaves for college.“We have a daughter that’s going to be 13 here and that would be a perfect time for her to take it over in the next couple of years-if she wants to,” Rhonda said. “If she doesn’t want to, I think I would probably continue it if it’s still a want and a need in Dickinson.”So far, the reception to Ice Cream Express has been amazing, Rhonda said.“We haven’t had an ice cream bus in this town for years,” Rhonda said. “I think it’s gone over way better than we anticipated it to, which is great.”1. What did Cassidy’s family have to do to get the ice cream truck prepared?a. Change the engine.b. Paint advertisements on it.c. Put in necessary appliances.d. Get approved by the authorities.A. c dB. b dC. b cD. a b2. Why did Cassidy decide to serve ice cream?A. To do something special with her friends.B. To obtain some business experience.C. To bring happiness to her neighborhood.D. To earn more money for her college fees.3. What is Rhonda’s attitude toward her daughter’s ice cream business?A. Unconcerned.B. Cautious.C. Expectant.D. Enthusiastic.4. The article is probably .A. an essayB. a news reportC. a biographyD. an advertisementBIn the hills outside Missoula, Montana, wildlife biologists are looking at how climate change affects something very small: the snowshoe hare.Life for snowshoe hares is pretty stressful-almost everything in the forest wants to eat them.Alex Kumar, a graduate student at the University of Montana, lists the animals that are hungry for hares. “Lynx(山猫), foxes, coyotes(土狼), even red squirrels(松鼠).”Kumar and field technician Tucker Seitz spend months searching these woods for hares, often listening for signals from hares they’ve already put radio collars(项圈) on.They catch other hares with wire traps(陷阱) about the size of a breadbox, with some apples as bait(诱饵). Most of the hares they track live less than a year—a hazard(风险) of being what Kumar calls “the cheeseburger of the ecosystem.”But snowshoe hares have a special skill: camouflage. They’re brown during the summer, but turn white for the snowy winter months.“There’re times when you’re tracking them and you know they’re really, really close, and you just can’t find them,” he says.Hares switch color in the spring and fall in response to light, when the days get longer or shorter. But if the snow comes late, you get a white hare on brown ground.“And they really think that they’re camouflaged,”Kumar says. “They act like we can’t see them.”Kumar calls this “mismatching”, and it’s becoming more of a concern with climate change.“If the hares are consistently molting(脱毛)at the same time, year after year, and the snowfall comes later and melts earlier, there’s going to be more and more times when hares are mismatched,” he says.Scott Mills of North Carolina State University leads t he research. He says they’re finding that mismatched hares die at higher rates. That’s a concern for the threatened Canada lynx, which mainly eats these hares.“It’s a very clear connection to a single climate change stressor,” Mills says.Hares might be a ble to adapt over time. Some snowshoe hares in Washington State don’t turn white at all. Mills is trying to figure out whether hares and other wildlife can adapt as fast as the climate is changing.“But how fast is too fast?” he asks.5. Alex Kumar and his classmates catch snowshoe hares in order to find out .A. the hares’ natural enemiesB. the influence of climate change on the hares’ livesC. why the hares change fur colors regularlyD. how the ecosystem in the woods works6. The word “camouflage” (Paragraph 6) is closest in meaning to .A. hidingB. escapingC. fightingD. scaring7. According to the passage, snowshoe hares can now be easily discovered by their enemiesbecause they .A. change their fur color to white too lateB. haven’t adapted to climate changeC. can no longer adapt to the change of light in spring and fallD. find it more and more difficult to molt at the same time each year8. Which best describes Mills’ tone in the passage?A. Approving.B. Concerned.C. Enthusiastic.D. Doubtful.COnly after the straight-talking repairman handed me the bill and waved goodbye did I finally acknowledge the painful truth: Our 20-year-old clothes dryer was not going to last.I turned to my husband. “He says we’re throwing good money after bad,” I sighed. “I think he’s right.”“When do you want to go shopping for a new one?” my husband asked.I glanced out the window, appreciating the sunlight dancing on the big-leaf maples in our backyard. Perfect drying weather. Suddenly, I recalled my mother hanging laundry on a clothesline during my childhood. My sister and I had played hide-and-seek among the sweet-smelling sheets waving in the wind.I suddenly had a plan. After the wash cycle, we covered the maples with damp blue jeans, shirts, socks and towels. The only things that didn’t go outside were my underpants. And I persuaded my shameless husband to let his big boxer shorts stay indoors, too.There is a secret pleasure to hanging laundry outdoors. It is the perfect excuse to get up from the computer. While checking on the laundry in the backyard, I could commune(亲近) not only with cotton T-shirts, but also my cats. I could watch cautious deer run through the yard with their young, listen to nervous squirrels in trees and observe a family of wild turkeys by the road. I returned to my desk refreshed.And, except for the sandpaper feel of sun-dried bath towels, the drying method was a complete success. When autumn came, I’d scan the horizon each day to evaluate the chances of sun-drying. One morning I saw rain clouds. I had a load of wet clothes in my arms and no place to put them.I found my husband. Together we hung laundry throughout the house.Then my husband gave me a hug and a smile. “I think it’s time to buy a dryer…” he said,“… like, today.”“Good idea,” I said, just as the infamous Oregon rain started.Our sun-dried laundry habit was finished for the season.9. Why did the author want to try sun-drying?a. Her husband insisted.b. She wanted to cut expenses.c. Their dryer wasn’t working.d. She had good childhood memories of using a clothesline.A. b cB. c dC. a c dD. b c d10. What could the straight-talking repairman have said to the author?A. “Continue to use it even if it is old.”B. “You should have taken better care of your dryer.”C. “You shouldn’t have wasted money on repairing your dryer.”D. “Just buy a new dryer even if it’s very expensive.”11. What was the biggest benefit that sun-drying brought to the author besides dry clothes?A. She loves sun-dried bath towels.B. She felt healthier and closer to nature.C. She could bathe in the sunshine, too.D. It gave her a break from her hard work.12. Which of the following is TRUE according to the article?A. The author has stopped sun-drying since autumn started.B. The author later became fed up with the trouble of hanging up her clothes.C. The author listened to weather reports every day when autumn came.D. The author realized sun-drying was seasonal and thus had its disadvantages.。

高三模拟一选考限时训练 Final approval draft on November 22, 2020模拟一“6＋4＋选考”限时训练[时间：45分钟分值：36＋39＋15]第Ⅰ卷一、选择题(本大题共6小题，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要求的。

)1选项探究主题实验试剂预期实验结果结论A 某“色拉油”是否含有脂肪苏丹Ⅲ染液被检测液体出现橘黄色不含有脂肪，但可能含有固醇B某“早餐奶”是否含有蛋白质双缩脲试剂被检测液体出现砖红色含有蛋白质，但含量少于淀粉C 某“奶片”是否添加淀粉碘液被检测液体出现蓝色含有淀粉，不含有蛋白质D 某“无糖”无色饮料中是否含有葡萄糖斐林试剂甲液和乙液被检测液体出现砖红色一定含有还原糖，但不一定是葡萄糖2.A．人体内成熟的红细胞中没有线粒体，不能产生ATPB．ATP中的能量可以来源于光能和化学能，也可以转化为光能和化学能C．在有氧与缺氧的条件下，细胞质基质都能形成ATPD．ATP中的“A”与构成DNA、RNA中的碱基“A”表示的不是同一物质3．下图表示人体内干细胞的增殖分化。

下列有关叙述正确的是( )A．干细胞与白细胞的基因型不同，因此合成的mRNA和蛋白质种类也不相同B．血小板和红细胞内遗传信息的流动方向是DNA→DNA→RNA→蛋白质C．图示细胞中，干细胞不仅具有较强的分裂能力，而且分裂周期也较短D．白细胞能够穿过血管壁去吞噬病菌，这是因为细胞膜的选择透过性4．下图中表示转录过程的是( )5．亲缘关系较远的物种，由于相似的生活方式，整体或部分形态结构向着同一方向改变，这属于趋同进化。

在趋同进化过程中( )A．通过相互选择，不同生物的基因库趋于相同B．同一区域的不同物种之间不存在相互选择和影响C．自然选择使不同生物对同一环境产生了相似的适应性D．不同生物将演化为形态结构相似的同一物种6．人工合成的植物激素类似物常用于生产实践。

图1所示是激素类似物甲和激素类似物乙对月季生根的影响，图2所示是激素类似物甲在其X、Y和Z三种浓度下对月季茎段侧芽生长的影响。

高三英语晚自习限时训练一、阅读理解AFun things to do in high schoolLearn another languageYour school might be holding foreign languages classes, so this is a great way to start your language learning journey! If you want more self-paced learning, apps like Duolingo are easily accessible (可使用的) on our mobile phones. As our world becomes more in terconnected, it’s always good to learn another language or two.Aim for a semester (学期) of straight AThis can be a difficult task but not impossible to achieve, as long as you put in the right amount of work and effort. If you are struggling(挣扎)with your grades, you can host or join group studies with your classmates!Don’t be disheartened if you are not able to get an A in a semester. What’s important is having the drive to go forward. As a famous person once said, “He who would climb a ladder must begin at the bottom.Experience another cultureCulture and tradition are something that all humans share. No matter where we come from, we always bring our culture with us. People coming from different cultures may be among your friends or neighbors.You can go to a museum, read a book, or try new food in your area. Remember to keep an open mind and take the time to learn about them.Bring a shareable treat to classIf you know your way around the kitchen, you can impress your class by making and bringing them a delicious treat! Not only will this make their stomachs happy, but you’ll also bond (联系) the whole class together. Just don’t forget to check with your teacher first before bringing one.1. What should you do if you want to learn a language at your own speed?A．Go to a museum to read books. B．Attend another language class. C．Learn it on an app like Duolingo. D．Join group studies with your classmates.2. What’s the key if you can’t get an A in a semester?A．Keeping an open mind. B．Asking your teachers for help. C．Changing your study method. D．Having the drive to go forward.3. What will probably be the result if you bring a treat to class?A．Experiencing different cultures. B．Making your teacher angry and anxious. C．Making some students have a stomachache. D．Making your classmates happy and united.BIn large population studies, people who eat lots of fruits and vegetables high in vitamin C appear to have a reduced risk for various types of cancer, including cancers of the mouth and lung. But it’s not clear that these benefits come specifically from vitamin C．The Age-Related Eye Disease Study found that a daily supplement containing 500 mg of vitamin C can help slow the progress of macular degeneration, an age-related eye disease that causes vision loss. But we don’t know what benefits, if any, are provided by vitamin C in particular.Many people take vitamin C supplements in unnecessarily high doses to prevent or treat various conditions for which its effectiveness is unproved. The vitamin C supplements have variously been said for staving off sunburn and improving the appearance of wrinkles. None of these benefits have been confirmed in scientific studies.Perhaps the best-known and most widely promoted use of high-dose(高剂量)vitamin C is to prevent or treat the common cold. Most of the evidence shows that high-dose vitamin C will, at most, shorten a cold by one day. In ordinary circumstances, vitamin C has no preventive value, although a few studies have reported a 50% reduced risk of developing colds among people taking vitamin C in extreme circumstances-for example, skiers, marathon runners, and soldiers working in extreme conditions.The recommended vitamin C dosage per day for healthy women is 75 mg per day. For adults, the highest safe daily intake is likely to be 2, 000 mg per day. Vitamin C is water-soluble, so any amount more than you need will not be stored in the body. It’s safe in almost any amount from foods, and supplements in recommended amounts are also regarded as safe for most people. In some people, high doses-more than, say, 2, 000 or 3, 000 mg per day-can cause a variety of symptoms. People with kidney conditions should take no more than 1, 000 mg a day.；4. What can we learn about vitamin C in the first paragraph?A．It can be of better effect in higher doses.B．It can be a cure for age-related eye disease.C．It can help slow the progress of some illness.D．It can reduce the risks of the mouth cancer.；5. What function does vitamin C have intreating the common cold?A．It can help people save plenty of money.B．It can stop soldiers from catching a cold.C．It may reduce a cold by one day at most.D．It may prevent the common cold efficiently.；6. How much Vitamin C are healthy women advised to take per day?A．75 mg.B．500 mg.C．2, 000 mg.D．3, 000mg.；7. Where is this text probably taken from?A．An exam paper.B．A travel journal.C．An art guidebook.D．A science magazine.CThis year will have been the warmest in the UK, the Met Office has said. Although for many people the record from the year that attracted the most attention was that the summer heatwave reached 40. 3℃, the organization said that more significant was a figure 30 degrees lower-the average temperature over the course of the year.Although the exact temperature will need to be confirmed in the new year, the Met Office predicted that 2022 is going to exceed (超过)the previous record for the warmest annual average, which was 9. 88C in 2014. Apart from this month, every other month in the UK in 2022 was warmer than average. New Ye ar’s Day 2022 was the warmest on record, exceeding 16℃ in North Wales. Dr. Mark McCarthy, head of the National Climate Information Centre, said: “While many people will remember the summer’s extreme heat, what hurts people most, especially the elderly, this year is the relatively consistent heat through the year. ” Although this summer was the fourth warmest on record, it was the first in which the temperature exceeded 40℃.McCarthy said that we can expect to see increasingly warmer summers as a consequenc e of climate change. “The warm year is in line with the impacts we expect as a result of human-related climate change, ”he said. “Although it doesn’t mean every year will be the warmest on record, climate change continues to increase the chances of increas ingly warm years over the coming decades. ”Rebecca Newsom, head of politics at Greenpeace UK, said: “These aren’t the kind of records you want to be breaking. Record-breaking investment in the renewable technologies will get us out of this mess.At present though, Britain is ready for rain, with forecasters warning of difficult driving conditions caused by wet weather over the next few days. Although temperatures will stay mild for much of the UK, the Met Office warned that the rainfall will hit England and Wales this Saturday and Sunday.；8. What will make this year special in the UK?A．The most visitors will be attracted.B．The warmest year will take place.C．The biggest success will be achieved.D．The highest temperature will be 30℃.；9. What can be inferred from Paragraph 2?A．Every month in the UK was warmer than average.B．Next summer may be the first summer to exceed 40℃.C．Many elderly men may go to hospital for the high heat.D．New Year’s Day was the warmest on record in England.；10. What does Rebecca think of the future climate?A．Renewable energies can fight climate change well.B．Record of high temperature will be broken next year.C．Politicians should be responsible for the current mess.D．Warm summers are a consequence of human activities.；11. What is the weather like in Wales this weekend?A．Sunny.B．Snowy.C．Cloudy.D．Rainy.二、七选五阅读Since I’ve been living abroad, many different people have asked me to name typical British dishes. I have, however, struggled to think of an answer. Yes, we do have our own national dishes. 12Fish and chips, as you could guess, is made up of battered fish and chips. It is often accompanied by mushy peas (豌豆糊), which consists of peas mashed up to form a thick paste. The majority of British people really do love this dish but it is not something that we would eat, say, on a weekly basis. 13 British people associate this dish with the seaside and it’s something that will usually be eaten on a day trip there.14 This is made up of roast meat, usually chicken or beef, accompanied by roast vegetables and a meat sauce. It is usually eaten on a Sunday, perhaps for a special family dinner.Although we do have our traditional dishes, we do not eat these on a daily basis. On a daily basis many British people will eat rice or pasta dished. 15 You can see this by looking at the range of international foods in the supermarket or at the va riety of different restaurants you can find on our high streets.16 However, perhaps unlike other countries, we tend to prefer to cook recipes influenced by other cuisine.A．We eat them as the seasons change.B．But how much do we actually eat them?C．In conclusion, we do have our national dishes.D．Another favourite British dish is the roast dinner.E．Our diet has been greatly influenced by other countries.F．It’s also not usually something that you would cook at home.G．You’ll be served a traditional dish if you get invited for dinner at a British family’s home.三、完形填空The public library is one of the greatest inventions humankind has ever imagined and actually made happen. Libraries are a (an) 17 , quiet place where all people can hang out and read, without having to 18 anyone anything. Apart from being a place that is full of 19 to borrow, libraries are something that offers 20 and warmth. A post on Twitter celebrating the wonderfulness of libraries 21 this point perfectly.“Today a woman with developmental disabilities came into the library, and she was 22 ,” wrote a Twitter user. “She didn’t 23 her address, but her phone number was in her pocket on a piece of paper with Elmo on it. She kept saying, ‘The library is a safe place.’We called and her guardians (监护人) came right over. It seemed that they were not worried at all. Apparently this happens pretty 24 . They even stayed long enough for her to 25 some new books and Sesame Street DVDs. The library is a safe place indeed.”The post 26 others to share their own stories of libraries being safe places for them, and it’s enough to 27 even the hardest of hearts. For people who grew up in dysfunctional (功能失调的) homes, the library can be a safe heaven of calm and kindness. For people lacking financial means, the library is a space that provides free education and free entertainment, as well as a free indoor place to go. This is the reason why 28 people grouped to libraries when they have nowhere else on earth---the only place that doesn’t 29 money. We cannot understate Literal lifesavers. Libraries also fill up a lot of gaps in other social 30 and help people find their way to information about other opportunities. They open the doors to so many 31 .17. A．calm B．noisy C．nervous D．amusing18. A．ask B．pay C．afford D．beg19. A．supplies B．stationery C．books D．cafeterias20. A．support B．assistance C．shelter D．safety21. A．declared B．explained C．tackled D．discovered22. A．trapped B．lost C．anxious D．delighted23. A．know B．search C．conceive D．cover24. A．exactly B．accurately C．regularly D．fluently25. A．work out B．come out C．bring out D．check out26. A．spread B．inspired C．impressed D．contacted27. A．bother B．surprise C．fund D．warm28. A．heartbroken B．homeless C．hopeless D．elderly29. A．require B．quit C．recommend D．spend30. A．research B．communities C．services D．designs31. A．memories B．problems C．advertisements D．possibilities四、语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式When I was in the middle school, I founded a student club 32 (name) “green planet” inspired by Chai Jing’s documentary Under the Dome. At first people knew this club. As a result, we had only 15 members. And I 33 (laugh) at for being crazy. However, I didn’t lose heart and I insisted. Every day, we club y members broadcast weather reports and PM 2.5 levels. We then published articles and pictures of theserious 34 (pollute) of the city on the school website. Meanwhile, my club also shares suggestions 35 how to live a low carbon life on the school board, for example: take public transportation or car pool to school; do 36 (little) shopping and so on.37 time went by, more are what students showed great interest in our club.And luckily, I persuaded my headmaster to join us. After what seemed ages of waiting, the club was finally accepted by the majority of students in my school. An increasing number of students supported 38 (ours).Since then, we’re worked together 39 (promote) our club. And up to now, 85% of the students 40 (join) us and enjoyed the simple but eco-friendly life.Such is Joy, 41 responsible and persistent girl.五、应用文写作42. If you’re Li Hua. I’m going to plant trees by the river with my classmates this weekend. Please write an email to Nancy and invite her to join us.Contents include: 1. Gathering time and place;2. Activity arrangement and reminder;3. Lunch and return time.Limitations: 1. The number of words is about 100. 2. You can add appropriate details to make your writing coherent.参考答案1. C2. D3. D4. C5. C6. A7. D8. B 9. C 10. A 11. D12. B 13. F 14. D 15. E 16. C17. A 18. B 19. C 20. D 21. B 22. B 23. A 24. C 25. D 26. B27. D 28. B 29. A 30. C 31. D32. named33. was laughed34. pollution35. on/about36. less37. As38. us39. to promote40. have joined41. a42. Dear Nancy,My classmates and I are planning to plant trees by the river this weekend. We all hope you can join us. Here is the schedule.We are to meet at the school gate at 8 o'clock this Saturday morning. Since we'll cycle there and work in the field, you'd better wear casual clothes and comfortable shoes. It would be much better if you could bring some necessary tools. Besides, we'll have a picnic there. Everyone is expected to bring their lunch and share it. Maybe we will return at around 3 o'clock in the afternoon.Would you like to join us? Hope to see you then.Yours,Li Hua。

2011—2012学年高三第二学期模拟练兵限时训练物理试题（一） 2012.05二、选择题（本题包括7小题，每小题给出的四个选项中，有的只有一个选项正确，有的有多个选项正确，全部选对的得4分，选对但不全的得2分，有选错的得0分）14．如图甲所示，一物块在粗糙斜面上，在平行斜面向上的外力F 作用下，斜面和物块始终处于静止状态，当F 按图乙所示规律变化时，关于物块与斜面间摩擦力的大小变化的说法中正确的是 A ．一定增大 B ．可能一直减小 C ．可能先减小后增大 D ．可能一直增大15. 质量为2kg 的物体，放在动摩擦因数=0.1μ的水平面上，在水平拉力的作用下由静止开始运动，拉力做的功W 和物体随位臵x 变化的关系如图所示，取重力加速度210/g m s =。

则A.0x m =至3x m =的过程中，物体的加速度是2.5m/s 2B.6x m =时，拉力的功率是6WC.9x m =时，物体的速度是3m/sD.3x m =至9x m =的过程中，合力做的功是12J16.如图甲所示，理想变压器原、副线圈的匝数比为11：1，R 1＝20 Ω，R 2＝30 Ω，C 为电容器。

已知通过R 1的正弦交流电如图乙所示，则A.交流电的频率为50 HzB.原线圈输入电压的最大值为V C.电阻R 2的电功率约为6.67 W D.通过R 3的电流始终为零17. 2011年9月29日，我国成功发射了“天宫一号”目标飞行器，“天宫一号”进入工作轨道后，其运行周期约为91 min 。

随后不久发射的“神舟八号”飞船在2011年11月3日凌晨与“天宫一号”在太空实现交会对接。

若对接前的某段时间内“神舟八号”和“天官一号”处在同一圆形轨道上顺时针运行，如图所示。

下列说法中正确的是 A ．“神舟八号”的线速度大于同步卫星的线速度 B ．“神舟八号”和“天宫一号”的运行周期相同 C ．“神舟八号”和“天宫一号”的向心力大小相同D ．若“神舟八号”仅向运动相反方向喷气加速，它将能在此轨道上和“天宫一号”实现对接18.如图甲所示,在光滑绝缘的水平面上固定两个等量负点电荷A 和B,O 点为AB 连线的中点,C 、D 为AB 连线上关于0点对称的两个点,且CO=OD=L 。

现吨市安达阳光实验学校高三英语限时练习一完形填空（时间：10分钟）The term home schooling means educating children at home or in places other than a normal setting such as a public or private school. There are many reasons why parents choose home schooling for their children. Some parents are __21__ with the quality of education in the public schools. Others do not want their children to have to worry about “peer pressure”, or social pressure from friends. They say it may have a(n) __22__ effect on the child‘s studies. These parents __23__ this type of pressure will lead to bad behavior such as smoking, drinking alcohol, and taking drugs.Bullying(欺负) from other students is another concern. Still other parents choose this type of __24__ for religious reasons. Whatever the __25__ may be, it is evident that more and more children are being taken out of normal schools every year. __26__, many questions have emerged, encouraging the debate over home schooling against public schooling.What then is the future of education? Will this new model of schooling replace normal schools? Will computers and the Internet __27__ our classrooms and teachers? As the debate continues, so do the questions about what home schoolers are studying at home. How can parents ensure that their children are prepared __28__ for college? How are home schoolers assessed to make sure they are getting the same educational standards that school students must have?Finally, there are questions regarding the children‘s emotional development. Are they too __29__ their fellow students? Are they __30__ the opportunity to get the social benefits of being in a large classroom of students? As with any debatable issue, the answers to these questions are neither simple nor one-sided.21. A. patient B. familiar C. pleased D. dissatisfied22. A. active B. contrary C. important D. negative23. A. care B. fear C. wish D. deny24. A. activity B. education C. behavior D. belief25. A. effects B. suggestions C. reasons D. pressures26. A. As a result B. On the whole C. After all D. On the contrary27. A. replace B. reserve C. represent D. release28. A. gracefully B. emotionally C. academically D. financially29. A. free from B. isolated from C. related to D.close to30. A. providing B. making C. taking D. losing语法填空（时间：10分钟）Carrying Faggots to Put Out a FireIn the last years of the Warring States period, the State of Qin attacked the State of Wei ____31_____ a large scale repeatedly and occupied large areas of land. In 273 B.B., the Qin army launched another attack upon the State of Wei. The king of the State of Wei summoned____32_____officials,and asked with a ____33_____ (worry) look if anyone could propose a way to defeat the Qin army. Most of the officials persuaded the king to sue for peace, at the cost of giving away to the State of Qin the large area of land. However, Su Dai, a counsellor, did not agree. "Once there was a man ____34_____ house was on fire. People told him to put out the fire with water, but he would not listen.____35_____, he carried a faggot to put out the fire, only to make the fire ____36_____ (fierce). That was ____37_____ he didn't knowthat,instead of putting out the fire, faggots could only make it burning more vigorously. Isn't it equal to ____38_____ (carry) faggots to put out a fire if you agree to sue for peace at the cost of the land of the State of Wei?"Though Su Dai's argument was very convincing, the king accepted the ____39_____ (suggest) of those officials and gave away to the State of Qin a large area of the land of the State of Wei. ____40_____ might be expected, the Qin army attacked the State of Wei on a large scale in 225 B.C. The State of Wei was finally destroyed by the State of Qin.积累短语：1. 大规模地_________________________2. 同于做某事___________________________3．带着忧虑的表情______________________________________________________________4. 正如所期盼的________________________________________________________________阅读理解（时间：20分钟）AMany years ago my student asked me the question, "Mrs. Kindred, why do you teach?" Without taking time to reflect, I answered, "Because someday I might say something that might make a difference in someone's life." Even though I was sincere, that wasn't a very good answer and my student didn't let it slide."Let me get this straight," he said, "You went to college for four years so you could come here every day because you have the hope that someday you might say something that will influence someone?" He shook his head as if I were crazy and walked away looking confused. I'm one of those people who look back and wish they had said something smart or witty,or swift.Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach:It's in my blood. My mother was my most influential teacher, and she was a 6th grade reading teacher until her death in 1990. She instilled(逐渐灌输) in me a love of reading and the knowledge that education opens doors.Teaching is a way to make a difference. If you throw a stone in a pond the ripples go on and on until they reach the shore. You can't have ripples without a "stone." Good teachers throw stones that make a positive difference, and that's what I strive to do.I genuinely love teenagers.I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and if I can help students avoid some potholes on the road of life, I want to do so. If they'll allow me to celebrate their victories with them, I want to do too.Teaching isn't for everyone, but I know I made the right career choice.41. Why did the student continue to ask the question about the writer’s being a teacher?A. Because he thought her answer was unbelievable.B. Because the writer was insincere.C. Because the student was naughty.D. Because the answer was difficult to understand.42. What do you think of the writer?A. Stupid.B. Honest.C. Conservative.D. Polite.43. According to the text, which of the following is NOT true?A. The writer’s mother has the greatest influence on her.B. The writer’s answer made the student confused.C. In the writer’s opinion, some people in the world are unfit to teach.D. The writer annoyed the student who asked the question.44. We can infer from the text that _________.A. the writer was also a good teacher in schoolB. the writer often plays with her students beside a pondC. the writer devotes herself to teaching and her studentsD. the writer often accompanies the students on their way home45. What’s the main idea of the text?A. A student’s silly question.B. A good teacher who likes students.C. A confused student.D. The reason why I teach.BAmong various programs, TV talk shows have covered every inch of spaceon daytime television. And anyone who watches them regularly knows that each one is different in style. But no two shows are more opposite in content, while at the same time standing out above the rest, than the Jerry Springer and Oprah Winfrey shows.Jerry Springer could easily be considered the king of "rubbish talk". The topics on his show are as surprising as can be. For example, the show takes the ever-common talk show titles of love, sex, cheating, and hate, to a different level. Clearly, the Jerry Springer show is about the dark side of society, yet people are willing to eat up the troubles of other people's lives.Like Jerry Springer, Oprah Winfrey takes the TV talk show to its top. But Oprah goes in the opposite direction. The show is mainly about the improvement of society and different quality of life. Contents are from teaching your children lessons, managing your work week, to getting to know your neighbors.Compared to Oprah, the Jerry Springer show looks like poisonous waste being poured into society. Jerry ends every show with a "final word". He makes a small speech about the entire idea of the show. Hopefully, this is the part where most people will learn something very valuable. Clean as it is, the Oprah show is not for everyone. The show's main audience are middle-class Americans. Most of the people have the time, money and ability to deal with life's tough problems. Jerry Springer, on the other hand, has more of a connection with the young adults of society. These are 18-to 21year-olds whose main troubles in life include love, relationship, sex, money and drug. They are the ones who see some value and lessons to be learned through the show's exploitation.46. Compared with other TV talk shows, both the Jerry Springer and the Oprah Winfrey shows are ______.A. more interestingB. unusually poplarC. more detailedD. more formal47. Though the social problems Jerry Springer talks about appear unpleasant, people who watch the shows ______.A. show disbelief in themB. are ready to face up to themC. remain cold to themD. are willing to get away from them48. Which of the following is likely to be a topic of the Oprah Winfrey show?A. A new type of robot.B. National hatred.C. Family income planning.D. Street accident.49. We can learn from the passage that the two talk shows ____.A. have become the only ones of its kindB. exploit the weaknesses in human natureC. appear at different times of the dayD. attract differentpeople50. What is the advantage of the Jerry Springer show?A. The show exposes the dark sides of society.B. The show pours poisonous waste into society.C. Jerry sums up the whole idea of the show.D. Jerry talks abou the improvement of society.CCan people change their skin colour without suffering like pop king Michael Jackson? Perhaps yes. Scientists have found the gene that determines skin colour.The gene comes in two versions, one of which is found in 99 per cent of Europeans. The other is found in 93 to 100 per cent of Africans, researchers at Pennsylvania State University report in the latest issue of Science.Scientists have changed the colour of a dark-striped zebrafish to uniform gold by inserting a version of the pigment(色素) gene into a young fish. As with humans, zebrafish skin colour is determined by pigment cells, which contain melanosomes(黑色素). The number, size and darkness of melanosomes per pigment cell determines skin colour.It appears that, like the golden zebrafish, light-skinned Europeans also have a mutation(变异) in the gene for melanosome production. This results in less pigmented skin.However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes.Humans acquired dark skin in Africa about 1.5 million years ago to protect bodies from ultra-violet rays of the sun(太阳光紫外线), which can cause skin cancer.But when modern humans leave Africa to live in northern latitudes, they need more sunlight on their skin to produce vitamin D. So the related gene changes, according to Cheng.Asians have the same version of the gene as Africans, so they probably acquired their light skin through the action of some other gene that affects skin colour, said Cheng.The new discovery could lead to medical treatments for skin cancer. It also could lead to research into ways to change skin colour without damaging it like chemical treatment did on Michael Jackson.51. The passage mainly tells us that ________.A. people can not change their skin colour without any painB. the new discovery could lead to search into ways to change skin colour safelyC. pop king Michael Jackson often changed his skin colour as he likedD. scientists have found out that people’s skin colour is determined by the gene52. It can be inferred from the passage that ________.A. nowadays people who want to change their skin colour have to suffer a lot from the damage caused by the chemical treatmentB. Europeans and Africans have the same geneC. the new discovery could help to find medical treatments for skin cancerD. there are two kinds of genes53. Scientists have done an experiment on a dark-striped zebra fish in order to ________.A. find the different genes of humans’B. prove the human s’ skin colour is determined by the pigment geneC. find out the reason why the African s’ skin colour is darkD. find out the ways of changing peopl’s skin colour54. The reason why Europeans are light-skinned is probably that ________.A. they are born light-skinned peopleB. light-skinned Europeans have mutation in the gen for melanosome productionC. they have fewer activities outsideD. they pay much attention to protecting their skin55. The writer’s attitude towards the discovery is ________.A. neutralB. negativeC. positiveD. indifferent参考答案完形填空21－30 DDBBC AACBD语法填空31. on 32. his 33. worried 34. whose 35. Instead 36. fiercer 37. because 38. carrying 39. suggestion40. As阅读理解A 篇：本文主要讲述作者从教的理由。