小题满分限时练(三)
七年级语文上册期末复习：积累与运用限时训练(三)(含答案)
2022-2023学年七年级语文上册期末复习积累与运用限时训练（三）时间：40分钟满分：70分一、字词综合(共5分)1．(本题5分)阅读下面的文字，回答后面的问题。
【甲】有一天，他的京城来了两个骗子，自称是织工，说能织出人间最美丽的布。
这种布不仅色彩和图案都分外美观，而且缝出来的衣服还有一种奇怪的特性：任何不称职的或者（yú chǔn）______得_____（病已重到无法用药医治的程度。
比喻已经到了无法挽救的地步）的人，都看不见这衣服。
【乙】他们向皇帝建议，用这新的、美丽的布料做成衣服，穿着这衣服去参加快要举行的游行大典。
“这布是华丽的！精致的！无双的！”每人都随声附和着。
每人都有说不出的快乐。
皇帝赐给骗子“御聘织师”的头衔，封他们为爵士，并授予一枚可以挂在扣眼上的（xūn zhāng）_________。
(1)给【甲】【乙】两段文字中加着重号的词语注音。
①称职___________ ②附和__________(2)根据【甲】【乙】两段文字中的拼音写出相应的词语。
①（yú chǔn）___________ ②（xūn zhāng）___________(3)结合【乙】文中括号里的内容提示，写出相应的成语。
成语：______________________二、选择题(共14分)2．(本题2分)下列各句标点符号使用不规范的一项是（）A．城市图书馆是城市的文化“加油站”，它们以开放、包容、共享的姿态，为书迷留下一方天地，为城市文化点亮一盏灯。
B．国之殇，未敢忘！举行国家公祭就是要让后代和国际社会了解真相、铭记历史。
C．思路是指一番话，一篇文章中思想所走过的路。
作者的思想从什么地方出发，怎样一步一步往前走，最后达到这条路的终点，都要踏踏实实摸清楚。
D．精读指向细腻的感受、透彻的理解和广泛的联想，便于准确地理解；跳读则是主动地舍弃、有意的忽略，以求更高的效率。
3．(本题2分)下列各句中有语病的一项是（）A．我国脱贫攻坚取得全面胜利，困扰中华民族几千年的绝对贫困问题画上了句号。
平面解析几何三角形与圆相关40分钟限时练(三)含答案高中数学
高中数学专题复习
《平面解析几何三角形、圆相关》单元过关检测
经典荟萃，匠心巨制！独家原创，欢迎下载！
注意事项：
1．答题前填写好自己的姓名、班级、考号等信息
2．请将答案正确填写在答题卡上 评卷人
得分 一、填空题
1．如图3,在矩形A B C D 中,3,AB =3BC =,BE AC ⊥,垂足为E ,则ED =_______.（汇编年高考广东卷（文））(几何证明选讲选做题)
图 3E
C
B D A
2．如图, AB 与CD 相交于点E , 过E 作BC 的平行线与AD 的延长线相交于点P . 已知A C ∠=∠, PD = 2DA = 2, 则PE = ______. （汇编年高考陕西卷（文））(几何证明选做题)
D
B
C
E P A 评卷人
得分 二、解答题
3．选修4-1：几何证明选讲（本小题满分10分）。
矩阵与变换二阶矩阵平面逆变换等40分钟限时练(三)附答案高中数学
二、解答题
3．选修4—2：矩阵与变换
已知矩阵 ，若矩阵 属于特征值6的一个特征向量为 ，属于特征值1的一个特征ቤተ መጻሕፍቲ ባይዱ量为 ．求矩阵 的逆矩阵．
【考点定位】本题考查的是矩阵的特征值特征向量和逆矩阵的运算，正确理解概念是本题的关键。
4．(1)求矩阵 的逆矩阵；
(2)利用逆矩阵知识解方程组
5．求矩阵 的特征值及对应的特征向量．
6．若点A（2，2）在矩阵M= 对应变换的作用下得到的点为B（-2，2），求矩阵M的逆矩阵。（本小题满分10分）
7．已知矩阵 ，求矩阵M的特征值与特征向量.
8．设 是把坐标平面上的点的横坐标伸长到 倍，纵坐标伸长到 倍的伸压变换．
（1）求矩阵 的特征值及相应的特征向量；
（2）求逆矩阵 以及椭圆 在 的作用下的新曲线的方程．
【参考答案】***试卷处理标记，请不要删除
评卷人
得分
一、填空题
1．。
2．．，则，．
解析： ．
，则 ， ．
评卷人
得分
二、解答题
3．
4．(1)
(2)
5．解：特征多项式
………………………………3分
由 ，解得 ……6分将 代入特征方程组，得
,可取 为属于特征值 1=1的一个特征向量…………………8分
同理,当 时,由 ,所以可取 为属于特征值 的一个特征向量．
高中数学专题复习
《矩阵与变换二阶矩阵平面逆变换等》单元过关检测
经典荟萃，匠心巨制！独家原创，欢迎下载！
注意事项：
1．答题前填写好自己的姓名、班级、考号等信息
2．请将答案正确填写在答题卡上
评卷人
得分
一、填空题
1．圆 在矩阵 对应的变换作用下的曲线方程为___________．
人教版九年级上册数学课堂作业同步期中复习限时训练：《一元二次方程应用题》(三)
人教版九年级上册数学课堂作业同步期中复习：《一元二次方程应用题》（三）（满分：100分限时60分钟）1．随着粤港澳大湾区建设的加速推进，广东省正加速布局以5G等为代表的战略性新兴产业，计划到2020年底，全省5G基站数量将达到6万座，到2022年底，全省5G基站数量将达到17.34万座．（1）按照计划，求2020年底到2022年底，全省5G基站数量的年平均增长率；（2）若2023年保持前两年5G基站数量的年平均增长率不变，到2023年底，全省5G基站数量能否超过25万座？2．2019年国庆档上映了多部优质国产影片，其中《我和我的祖国》、《中国机长》这两部影片不管是剧情还是制作，都非常值得一看．《中国机长》是根据真实故事改编的，影片中全组机组人员以自己的实际行动捍卫安全、呵护生命，堪称是“新时代的英雄”、“民航奇迹的创造者”，据统计，某地10月1日该影片的票房约为1亿，10月3日的票房约为1.96亿．（1）求该地这两天《中国机长》票房的平均增长率；（2）电影《我和我的祖国》、《中国机长》的票价分别为40元、45元，10月份，某企业准备购买200张不同时段的两种电影票，预计总花费不超过8350元，其中《我和我的祖国》的票数不多于《中国机长》票数的2倍，请求出该企业有多少种购买方案，并写出最省钱的方案及所需费用．3．今年我国发生了较为严重的新冠肺炎疫情，口罩供不应求，某商店恰好年前新进了一批口罩，若按每个盈利1元销售，每天可售出200个，如果每个口罩的售价上涨0.5元，则销售量就减少10个，问应将每个口罩涨价多少元时，才能让顾客得到实惠的同时每天利润为480元？4．如图，某一农场计划利用已有的一堵长为7.9米的墙，用篱笆围成一个面积为12m2的矩形园子，现有可用的篱笆总长为11m，设AB＝x，BC＝y．（1）请写出y关于x的函数表达式，并给出一种围法；（2）若取园子的长、宽都为整数（单位：米），一共有几种围法？（3）若要使11m长的篱笆刚好用完，应怎样围？5．如图所示，在长为32m、宽20m的矩形耕地上，修筑同样宽的三条道路（两条纵向，一条横向，横向与纵向互相垂直），把耕地分成大小不等的六块作试验田，要使试验田面积为570m2，问道路应多宽？6．如图，在宽为40m，长为64m的矩形地面上，修筑三条同样宽的道路，每条道路均与矩形地面的一条边平行，余下的部分作为耕地，要使得耕地的面积为2418m2，则道路的宽应为多少？7．温润有度，为爱加温．近年来设计精巧、物美价廉的暖风机逐渐成为人们冬天必备的“取暖神器”，今年11月下旬某商场计划购进A、B两种型号的暖风机共900台，每台A型号暖风机售价为600元，每台B型号暖风机售价为900元．（1）若要使得A、B两种型号暖风机的销售额不低于69万元，则至多购进多少台A型号暖风机？（2）由于质量超群、品质卓越，11月下旬购进的A、B两种型号的暖风机全部售完．该商场在12上旬又购进了A、B两种型号的暖风机若干台，并且进行“双12”促销活动，每台A型号暖风机的售价比其11月下旬的售价优惠a%，A型号暖风机12月上旬的销售量比其在（1）问条件下的最高购进量增加a%，每台B型号暖风机的售价比其11月下旬的售价优惠a%，B型号暖风机12月上旬的销售量比其在（1）问条件下的最低购进量增加a%，A、B两种型号的暖风机在12月上旬的销售额比（1）问中最低销售额增加了a%，求a的值．8．某药店购进一批消毒液，计划每瓶标价100元，由于疫情得到有效控制，药店决定对这批消毒液全部降价销售，设每次降价百分率相同，经过连续两次降价后，每瓶售价为81元．（1）求每次降价的百分率．（2）若按标价出售，每瓶能盈利100%，问第一次降价后销售消毒液100瓶，第二次降价后至少需要销售多少瓶，总利润才能超过5000元？9．有一张面积为100cm2的正方形贺卡，另有一个长方形信封，长宽之比为5：3，面积为150cm2，能将这张贺卡不折叠的放入此信封吗？请通过计算说明你的判断．10．为了打好脱贫攻坚战，做好精准扶贫，某乡2018年投入资金320万元用于异地安置，并规划投入资金逐年增加，2020年计划投入资金720万元．（1）从2018年到2020年，该乡投入异地安置资金的年平均增长率为多少？（2）在2020年异地安置的具体实施中，该乡计划投入资金不低于160万元用于优先搬迁租房奖励，规定前100户（含第100户）每户每天奖励8元，100户以后每户每天奖励6元，按租房400天计算，求2020年该乡至少有多少户可以享受到优先搬迁租房奖励？参考答案1．解：（1）设2020年底到2022年底，全省5G基站数量的年平均增长率为x，依题意，得：6×（1+x）2＝17.34，解得：x1＝0.7＝70%，x2＝﹣2.7（不合题意，舍去）．答：2020年底到2022年底，全省5G基站数量的年平均增长率为70%．（2）17.34×（1+70%）＝29.478（万座），∵29.478＞25，∴到2023年底，全省5G基站数量能超过25万座．2．解：（1）设该地这两天《中国机长》票房的平均增长率为x．根据题意得：1×（1+x）2＝1.96解得：x1＝0.4，x2＝﹣2.4（舍）答：该地这两天《中国机长》票房的平均增长率为40%．（2）设购买《我和我的祖国》a张，则购买《中国机长》（200﹣a）张根据题意得：解得：130≤a≤∵a为正整数∴a＝130，131，132，133∴该企业共有4种购买方案，购买《我和我的祖国》133张，《中国机长》67张时最省钱，费用为：40×133+45×67＝8335（元）．答：最省钱的方案为购买《我和我的祖国》133张，《中国机长》67张，所需费用为8335元．3．解：设应将每个口罩涨价x元，则每天可售出（200﹣10×）件，依题意，得：（1+x）（200﹣10×）＝480，化简，得：x2﹣9x+14＝0，解得：x1＝2，x2＝7．又∵要让顾客得到实惠，∴x＝2．答：应将每个口罩涨价2元时，才能让顾客得到实惠的同时每天利润为480元．4．解：（1）由题意xy＝12，∴y＝．如当x＝3时y＝4，即宽为3，长为4；（2）设园子的长为ym，宽为xm，根据题意得：，∵园子的长、宽都是整数米，∴x＝6，y＝2或x＝4，y＝3或x＝3，y＝4，∴一共有3种围法：宽为2m时，长为6m，宽为3m时，长为4m，宽为4m时，长为3m；（3）∵要使11m长的篱笆恰好用完，则2x+y＝11，∴x＝4，y＝3，∴要使11m长的篱笆恰好用完，应使宽为4m，长为3m；5．解：设道路为x米宽，由题意得：（32﹣2x）（20﹣x）＝570，整理得：x2﹣36x+35＝0，解得：x1＝1，x2＝35，经检验是原方程的解，但是x＝35＞20，因此不合题意舍去，答：道路为1m宽．6．解：设道路的宽应为xm，依题意，得：（64﹣2x）（40﹣x）＝2418，整理，得：x2﹣72x+71＝0，解得：x1＝1，x2＝71（不合题意，舍去）．答：道路的宽应为1m．7．解：（1）设购进x台A型号暖风机，则购进（900﹣x）台B型号暖风机，依题意，得：600x+900（900﹣x）≥690000，解得：x≤400．答：至多购进400台A型号暖风机．（2）依题意，得：600（1﹣a%）×400（1+a%）+900（1﹣a%）×（900﹣400）（1+a%）＝690000（1+a%），整理，得：150a﹣12a2＝0，解得：a1＝12.5，a2＝0（不合题意，舍去）．答：a的值为12.5．8．解：（1）设每次降价的百分率为x，依题意得：100（1﹣x）2＝81，解得：x1＝10%，x2＝1.9（舍去）．答：每次降价的百分率为10%．（2）设第二次降价后需要销售y瓶，则100÷（1+100%）＝50（元），100×（1﹣10%）＝90（元），（90﹣50）×100+（81﹣50）y＞5000，解得y＞，∵y为整数，∴第二次降价后至少需要销售33瓶，总利润才能超过5000元．9．解：设长方形信封的长为5xcm，宽为3xcm．由题意得：5x•3x＝150，解得：x＝（负值舍去）所以长方形信封的宽为：3x＝3，∵＝10，∴正方形贺卡的边长为10cm．∵（3）2＝90，而90＜100，∴3＜10，答：不能将这张贺卡不折叠的放入此信封中．10．解：（1）设从2018年到2020年，该乡投入异地安置资金的年平均增长率为x，依题意，得：320（1+x）2＝720，解得：x1＝0.5＝50%，x2＝﹣2.5（不合题意，舍去）．答：从2018年到2020年，该乡投入异地安置资金的年平均增长率为50%．（2）设2020年该乡有y户可以享受到优先搬迁租房奖励，依题意，得：8×400×100+6×400（y﹣100）≥1600000，解得：y≥633．又∵y为正整数，∴y的最小值为634．答：2020年该乡至少有634户可以享受到优先搬迁租房奖励．。
高三限时阅读训练3精选
高三限时阅读训练3一、完形填空（共20 小题；每小题1分；满分20分）One winter morning, I bought a copy of The New York World and turned its pages until I got The Help Wanted Unskilled section. A small advertisement held my __ 36 . It read, “Easy job. Good wages. No experience 37_ .” It sounded like the job I was _ 38 . Easy job. Good Wages. Those four words 39__ now and then in my brain as I was traveling to the address indicated in the 40__ . Easy job. Good wages. Easy job. Good Wages. Easy...When I got to the place, I saw a series of large 41_ half filled with water. Out of them stuck the necks of many bottles of various 42__ and shapes. There were a number of workers sitting on small wooden benches43_ these basins. All had their 44_ in the water of the basin, the left hand holding a 45_ and the thumb nail （指甲）of the right hand _46 the labels（标签）on it.I sat down on a 47 _ beside one of the basins and started to work on one bottle. As the minutes went by, I noticed that the 48 _ of the water started to __ 49 from my hand to my body. But 50 __ still, the thumb of my right hand was __51 by the minute into a full-blown tomato-colored finger. A numb（麻木）pain began to be felt __ 52 from my right thumb. Then I began to feel as if the pa, I told the manager I’d 53__ . He figured that I had __ 54 69 cents at 23 cents an hour.With the money, I left the working place. “Easy job. Good wages...” came to my brain again. Looking at my hands, I 55 myself, “Can easy job get good wages?” I will remember this experience forever.36. A. eyes B. attention C. decision D. tongue37. A. necessary B. forgettable C. practical D. obvious38. A. running after B. looking for C. heading for D. looking after39. A. lived B. moved C. flashed D. attacked40. A. letter B. sign C. advertisement D. post41. A. baskets B. bowls C. pots D. basins42. A. weights B. sizes C. qualities D. depths43. A. In B. Above C. Under D. Around44. A. arms B. hands C. legs D. feet45. A. knife B. cloth C. bottleD. brush46. A. painting B. showing C. touching D. removing47. A. chair B. bench C. stoneD. sofa48. A. smell B. coldness C. colorD. steam49. A. spread B. recover C. recycle D. cover50. A. worse B. better C. moreD. easier51. A. going B. researching C. growing D. running52. A. now and then B. here and there C. one by one D. little by little53. A. adapt B. argue C. bargain D. quit54. A. taken B. offered C. earned D. created55. A. forgave B. asked C. foundD. hated二、阅读理解(A)Everyone looks forward to progress, whether in one’s personal life or in the g eneral society. Progress indicates a person’s ability to change the way he is living at the moment. Progress must lead to a better life and a better way of doing things. All these, however, remain true only in so far as people want to accept technology and move forward by finding new and more efficient ways of doing things.However, at the back of the minds of many people, especially those who miss the “good old days”, , people are able to contact one another no matter where they are and at whatever time they wish to. gadgets, such as mobile phones and iPads, people often do not take the effect to visit one another personally. A personal visit carries with it the additional feature of having to be in the person’s presence for as long as the visit lasts. We cannot unnecessarily excuse ourselves or turn the other person off.ucts. For example, many handcrafts(手工艺品) are now produced in a factory. Although this means that supply is better able to increase demand, now that the supply is quick and efficient, the demand might fall because mass production lowers the quality of the handicraft and it is difficult to find unique designs on each item.It is people’s attitude towards progress that causes the type of influence that technology has on society. Technology i s flexible. There is no fixed way of making use of it. Everything depends on people’s attitude. The worst effects of progress will fall on those who are unable to rethink their attitudes and views of society. When we accept progress and adapt it to suit ou r needs, a new “past” is created.56.According to Paragraph 1, progress can benefit people when they are willing to _______.A. live a better lifeB. look for better methodsC. change ways of livingD. accept technology and advance steadily57. The underlined word “gadgets” is closest in meaning to _______.A. toolsB. messagesC. barriersD. skills58A. lack great accuracyB. lack the personal touch59. What can be learned about technology from Paragraph 4?A. It can destroy old traditions.B. It can lead to social progress.C. It can be used to correct mistakes.D. It can be used to preserve old products.(B)Pride and Prejudice for the Modern WomanLet us imagine how Pride and Prejudice, Jane Austen's most famous work, might be updated, 200 years on. Austen's popularity is rooted in her intelligence. But today she would certainly have had a very different life, as would her characters. Here's my own suggestion. .It is a truth finally and universally acknowledged that a single woman with brains deserves to have equal opportunities to men, however disadvantaged she may feel by sexism." My dear husband," said his hopeful wife one day, " have you heard that the local store, standing empty for so long, is taken over by a bright young businesswoman?"Her dull and indifferent (漠不关心的) husband replied that he had not. "But it is, it is," she replied excitedly. Mr Dull-Husband made no reply."Don't you want to know her plans?" she cried with some impatience."Well, clearly you think it ma tters to your silly little head. .. so I'd better listen. ""Well, my dear, the rumour (传言) is that she has already set up a string of successful businesses in northern England, though how a woman can know anything about that is beyond me. She will move in herself next month. " "What is her name?" "Bingley. ""Is she married or single?""My dear love; those lazy boys need something to wake them up. There are bound to be jobs going. ""Is that her point in settling here? Surely as a woman she has simply taken a fancy to the place. ""Nonsense, my love, how little you've noticed the world has changed. She's got a first-rate degree and some sort of business qualification, I'm told. She surely needs one of our boys! Perhaps you might give her a call. ""Me? No. Perhaps you can take an interest. You still have your looks, after all. She may even offer you a job. ""Oh, that's not likely. These new chances belong to the younger generation. But now you mention it, I think I'll go along all the same. "... It would rem(年限) among the city's business leaders shorter than theirs. Still, she'd no doubt have enjoyed Davos—and might even have hobnobbed (攀谈) with influential figures.60. Which of the following is TRUE according to the passage?A. Austen was born 200 years ago.B. Austen rewrote Pride and Prejudice.C. Austen's success lies in her wisdom.D. Austen's updated work gains popularity.61. The underlined part in the passage suggests that Mrs Bennet ____.A. had mixed feelings of admiration and surprise about BingleyB. felt kind of worried and doubtful about BingleyC. was extremely anxious to meet BingleyD. had a great curiosity about Bingley62. In the eyes of Mrs. Bennet, Bingley surely needed one of their boys to ____.A. get married toB. work for herC. help her move inD. take over her store63. What does the writer intend to tell us?A. Women with brains can also be as successful as men.B. Women have to pay a high price for success.C.A judgment must be made free from prejudice.D. Sex discrimination still exists nowadays.三、任务型阅读Green is not always referring to the color. In some cases, it is the term used for being environmentally friendly. If you’ve been looking to replace your furniture, consider going green because environmentally friendly furniture offers many benefits. Here are a few tips to get you started on your hunt for the perfect eco-friendly furniture.First, environmentally friendly furniture isn’t harmful to your health. Also its manufacturing process doesn’t cause damage to the environment in any way. Besides, by purchasing eco-friendly products, you prevent deforestation and global warming to some extent in your own way. You do your part in protecting the environment. Environmentally friendly furniture is cost-effective as well.The materials that are used in furniture are what make them green. Materials can be good for the environment either because they are materials that are considered renewable resources or they are all natural. A lack of chemicals and toxins in green furniture also means it is a better choice for the environment. It may be hard to imagine that a sofa or a table could actually be a green product but they really can be depending on what they’re made of.There are a lot of renewable sources that manufacturers could use when building the furniture, so you should be keeping an eye out for them. Bamboo can be an excellent replacement for wood and can also replace plastics and metals in some furnishing. Cotton is a soft fabric that is safe for the environment and it can be replenished(补充) often. Hemp is also a renewable source that can be used for fabric and twine.Recycled materials also can be made into green furniture. Metals can be recovered and remade into new things such as frames and foundations for sofas. Recycled plastic can also be made into furniture such as tables and chairs. Touching up old furniture instead of buying new items is very cheap way to be green. Yard sales and second-hand stores sell furniture too and buying the used means new things won’t be made, so no more damage has to happen to the earth.Therefore, when you want to hunt for the perfect environmentally friendly furniture, you should try to know the type of materials which are used in building the furniture.BABCC41—45DBDBC46—50DBBAA51—55 CDDCB阅读DABD CABD任务型阅读(71) Benefits/Advantages (72) harmless/beneficial (73) avoids (74) save (75) contain/have(76) replace (77) reused/recycled/used (78) like (79) second-hand/used/old(80) better/necessary/important/vital/essential。
高考英语二轮专题练习限时满分练50分阅读限时满分练(三)
50分阅读限时满分练(三)(限时35分钟)Ⅰ.阅读理解(共15小题; 每小题2.5分, 满分37.5分)ASan Francisco Fire Engine ToursSan Francisco Winery TourRunning: February 1st through April 30thThis delicious tour goes through the city on its way to Treasure Island where we will stop at the famous Winery SF.Here you can enjoy 4 pours of some of the best wine San Francisco has tooffer.(Included in ticket price)Departing from the Cannery:Tour times upon requestDuration(时长): 2 hoursPrice: $90Back to the Fifties TourRunning: August 16th through August 31stThis tour transports you back in time to one of San Francisco’s most fantastic periods, the 1950s! Enjoy fun history as we take you through San Francisco for a free taste of ice cream.Departing from the Cannery: 5:00 p.m. and 7:30 p.m.Duration: 2 hoursPrice: $90Spooky Halloween TourRunning: October 10th through October 31stJoin us for a ride through the historical Presidio district.Authentic fire gear(服装) is provided for your warmth as our entertainers take you to some of the most thrilling parts of San Francisco.Departing from the Cannery: 6:30 p.m. and 8:30 p.m.Duration: 1 hour and 30 minutesPrice: Available upon requestHoliday Lights TourRunning: December 6th through December 23rdThis attractive tour takes you to some of San Francisco’s most cheerful holiday scenes. Authentic fire gear is provided for your warmth as you get into the holiday spirit.Departing from the Cannery: 7:00 p.m. and 9:00 p.m.Duration: 1 hour and 30 minutesAdvance reservations required.1.Which of the tours is available in March?A.San Francisco Winery Tour.B.Back to the Fifties Tour.C.Spooky Halloween Tour.D.Holiday Lights Tour.2.What can tourists do on Back to the Fifties Tour?A.Go to Treasure Island.B.Enjoy the holiday scenes.C.Have free ice cream.D.Visit the Presidio district.3.What are tourists required to do to go on Holiday Lights Tour?A.Take some drinks.B.Set off early in the morning.C.Wear warm clothes.D.Make reservations in advance.B(2021·陕西高三模拟)It was a dark night. Thick, dark, gray clouds had made sure that there was no starlight or moonlight to greet me as I walked out on my porch. Still, I kept the porch light off because I didn’t want to be surrounded by bugs and moths(飞蛾) on this sticky summer evening. I stood there for a while letting my eyes adjust to the lack of light. My dog stood beside me waiting patiently for me to start her walk. It was then, though, that I saw them. First one blink of light at the far end of the meadow was followed by another and then another. I smiled. I recognised them at once as my firefly friends, who always showed up at this time of year.I got so much joy watching them first as a child and then as an adult. They never became dull or boring and they always filled me with delight. When I was little I used to sit in the grass and watch them slowly fly around blinking on and off. I never caught and put one in a jar as some kids did because I was afraid I might kill it and I never wanted to hurt these messengers(信使) of light. Their time on earth was so brief as it was. I tried to enjoy them each time they were here. It always saddened me when they disappeared in the fall and it always made my heart sing when they reappeared the next summer.I think I enjoy these little fireflies so much because I can see that we are like them in a lot of ways. Our time here on earth is brief. Often our light and love are more like blinks rather than a steady shine. Let’s share our light and love while we are here then.4.Why did the author turn off his porch light?A.To avoid some insects.B.To adapt to surroundings.C.To search for his dog.D.To greet special friends.5.What can we know about fireflies?A.They always frightened the author.B.Most kids caught and killed them.C.The author watched them every night.D.They usually brightened the author.6.What does the author mainly convey through the story?A.Value our short life in the world.B.Protect fireflies as well as possible.C.Devote ourselves as much as possible.D.Share as many inspiring stories as possible.7.What can be the best title for the text?A.A Special Summer NightB.Messengers of LightC.Human’s Best FriendsD.Fireflies — Shinning ForeverC(2021·河北唐山二模)A 293-million-mile journey of the NASA Perseverance rover(探测器) to Mars ended successfully on February 18, 2021, with a picture-perfect landing inside the Jezero Crater. The car-sized, six-wheeled rover, nicknamed Percy is the US space agency’s biggest and most advanced explorer to date. Its primary mission is to search for signs of ancient microbial(微生物的) life on Mars.Landing on Mars is extremely tricky. The Red Planet’s gravitational pull causes the approaching spacecraft to go faster to high speeds, while its thin atmosphere—just 1 percent of the Earth’s—does little to help slow it down as it approaches the surface.The scientists had to reduce Percy’s 12,000 mph speed to a safe landing speed of less than five mph—in just six and a half minutes. The target entry angle also had to be precise 12 degrees—any steeper, and the spacecraft would burn up; any flatter, and it would get lost in space. It is no wonder that the final approach is often referred to as the “seven minutes of terror”.Upon attaining a manageable speed, Percy briefly flew over the Martian surface to seek out the perfect landing spot. Its complex map-reading system rapidly scanned the area and matched it with maps in its database to find the best location.The NASA scientists spent the next two months testing Percy’s scientific instruments. Once ready, the rover would begin to carry out its mission.“Perseverance is the smartest robot ever made but confirming that microbial life once existed carries an unusually large burden of proof,” said Lori Glaze, director of NASA’s Planetary ScienceDivision.“While we’ll learn a lot with the great instruments we have aboard the rover, it may very well require the far more well-equipped laboratories and delicate instruments back here on Earth to tell us whether our samples carry evidence that Mars once harboured life.”8.What is the extraordinary challenge for the rover to land on Mars?A.The speed reduction.B.The atmosphere analysis.C.The location search.D.The time management.9.What is paragraph 3 mainly about?A.Ways to find the precise entry angle.B.Consequences of a wrong entry degree.C.Factors to survive “the seven minutes”.D.Reasons for the necessity of speed reducing.10.What does “it” refer to in paragraph 4?A.The spot.B.The area.C.The system.D.The surface.11.What can be inferred from Lori Glaze’s words?A.Instruments aboard the rover are not quite reliable.B.Perseverance is able to collect enough evidence needed.C.Man still has a long way to go to prove life was on Mars.D.Samples of Mars will be returned soon to our labs on Earth.DI told my friend Graham that I often cycled two miles from my house to the town centre but unfortunately there was a big hill on the route. He replied,“You mean fortunately.” He explained that I should be glad of the extra exercise that the hill provided.My attitude to the hill has now changed. I used to complain as I approached it but now I tell myself the following. This hill will exercise my heart and lungs. It will help me to lose weight and get fit. It will mean that I live longer. This hill is my friend. Finally I comfort myself with the thought of all those silly people who pay money to go to a gym and sit on stationary exercise bicycles when I can get the same value for free. I have a smile of satisfaction as I reach the top of the hill.Problems are there to be faced and overcome. We cannot achieve anything with an easy life. Helen Keller was the first deaf and blind person to gain a university degree. Her activism and writing proved inspirational. She wrote,“The character cannot be developed with ease. Only through experiences of suffering can the soul be strengthened, vision cleared, ambition inspired and success achieved.”One of the main determinants of success in life is our attitude towards adversity. From time to time we all face hardships, problems, accidents and difficulties. Some are of our own making but many confront us through no fault of our own. While we cannot choose adversity, we can choose our attitude towards it.Douglas Bader was 21 when in 1931 he had both legs cut off following a flying accident. He was determined to fly again and went on to become one of the leading flying aviators in the Battle of Britain with 22 aerial victories over the Germans. He was an inspiration to others during the war. He said,“Don’t listen to anyone who tells you that you can’t do this or that. That’s nonsense. Make up your mind, andyou’ll never use crutches or a stick, and then have a go at everything. Go to school, and join in all the games you can. Go anywhere you want to. But never, never let them persuade you that things are too difficult or impossible.”The biographies of great people are full of examples of how they took steps to overcome the difficulties they faced. The common thread is that they did not become depressed. They chose their attitude. They chose to be positive. They took on the challenge. They won. Nevertheless, there is still the problem of how you change your attitude towards adversity.12.Which of the following is true according to the author of the passage?A.Those who want to achieve success can’t expect to live an easy life.B.Climbing hills on bicycles is the best way to take exercise.C.Going to a gym is greatly beneficial to people’s health.D.People’s attitude towards hardships is the only factor of their success.13.By quoting what Douglas Bader said, the author intends to tell us “” .A.Failure is the mother of successB.A bad workman quarrels with his toolsC.Nothing is difficult to the man who will tryD.If you risk nothing, you will have nothing14.Following this passage, the author will further talk about .A.how his friend helped him to change his attitude towards the challenge he facedB.why it is important to keep optimistic in the face of troubleC.what steps to take to change your attitude towards the difficulties you faceD.what great people have in common15.Which of the following can be the best title of the passage?A.Different attitudes towards misfortuneB.Face difficulties with a smileC.Nothing is impossibleD.Life is full of adversityⅡ.七选五(共5小题; 每小题2.5分, 满分12.5分)(2021·安徽安庆高三二模)How to Make a Classroom Management PlanStudents need to feel comfortable and safe in order to learn effectively. As an educator, you need to manage your classroom in such a way that you create this sort of environment. A classroom management plan is a strategy you create and carry out. 16 It can help you deal with negative behaviours as well.17 Many classroom management plans begin with the teacher’s philosophy of motivation. Basically, it lays out what you believe about education and how students should learn. You can talk about the environment you want to create and how you plan to create that environment, both physically and emotionally.Set the tone on the first day of class. Start building relationships with your students by being friendly and getting to know each other. 18 So they know in advance how you expect them to behave.19 Get your students’ parents on board by laying out your basic rules. You can also tell them about the systems of rewards and consequences. That way, parents know what to expect throughout the year.Set the example.20 For instance, show you are respectful of each student’s ideas. It will let them know they can trust you.Be consistent. Probably the most important part of any classroom management plan is being consistent with how you carry it out. That means enforcing(执行) rules even when you don’t want to, as kids will come to understand that you mean what you say in the classroom.A.Determine your philosophy.B.Understand each child’s motivation.C.Create a formal letter for consequences.D.Write a letter about the plan to send home.E.Share the rules, rewards, and consequences.F.It is important that you follow the classroom rules, too.G.It can help you get and maintain control of the classroom.50分阅读限时满分练(三)【语篇导读】本文是一篇应用文。
(部编版)中考字音字形限时练习(字表二1000字、含答案解析)
【时间：2分钟每小题：20分满分：100分】班级：姓名：成绩：1．下列加点字的读音有误的一项是（）A．撰．文（zhuàn）和蔼．（ǎi）被褥．（rǔ）咄．咄逼人（duō）B．框．（kuàng）架遏制（è）铭．记（míng）长途跋．（bá）涉C．存恤．（xù）狰狞．（níng）倔．强（jué）煞．有介事（shà）D．挑剔．（tī）贿赂．（lù）绰．号（chuò）彬．彬有礼（bīn）2．下列词语书写有误的一项是（）A．家眷战战兢兢眼花缭乱B．珐琅模棱两可踱来踱去C．搓捻销声匿迹前仆后继D．狼籍今非夕比辨伪去妄3．下列词语中加点字音有错误．．．的一项是（）A．姊．妹（zǐ）池沼．（zhǎo）莽．莽榛榛（mǎng）B．灼．热（zhuó）淤．滩（yū）酣．然入梦（hān）C．轩敞．（chǎng）粗犷．（guǎng）不折不挠．（náo）D．烙．印（lào）徘徊．（huái）棱．角分明（líng）4．下列词语中加点字注音有误的一项是（）A．殷．红（yān）佳肴．（yáo）菜畦．（qí）相得益彰．（ zhāng）B．冗．杂（rǒng）德馨．（xīn）阔绰．（chuò）仙露琼浆（qióng）C．蹊跷．（qiāo）酝．酿（yùn）峰峦．（luán）千里迢迢．（tiáo）D．肖．像（xiào）藩篱．（lí）滑稽．（jī）矫．揉造作（jiāo）5．下列词语书写全都正确的一项是（）A．题拔迁徙恍然大悟沧海一粟B．亢奋蔓延心不在焉心旷神怡C．范畴宽怒冥思苦想所向披靡D．闲暇前仆后继绿草如阴震耳欲聋答案解析1．下列加点字的读音有误的一项是（A）A．撰．文（zhuàn）和蔼．（ǎi）被褥．（rù）咄．咄逼人（duō）B．框．（kuàng）架遏制（è）铭．记（míng）长途跋．（bá）涉C．存恤．（xù）狰狞．（níng）倔．强（jué）煞．有介事（shà）D．挑剔．（tī）贿赂．（lù）绰．号（chuò）彬．彬有礼（bīn）2．下列词语书写有误的一项是（ D ）A．家眷战战兢兢眼花缭乱B．珐琅模棱两可踱来踱去C．搓捻销声匿迹前仆后继D．狼籍（藉）今非夕（昔）比辨伪去妄3．下列词语中加点字音有错误．．．的一项是（D）A．姊．妹（zǐ）池沼．（zhǎo）莽．莽榛榛（mǎng）B．灼．热（zhuó）淤．滩（yū）酣．然入梦（hān）C．轩敞．（chǎng）粗犷．（guǎng）不折不挠．（náo）D．烙．印（lào）徘徊．（huái）棱．角分明（léng）4．下列词语中加点字注音有误的一项是（D）A．殷．红（yān）佳肴．（yáo）菜畦．（qí）相得益彰．（ zhāng）B．冗．杂（rǒng）德馨．（xīn）阔绰．（chuò）仙露琼浆（qióng）C．蹊跷．（qiāo）酝．酿（yùn）峰峦．（luán）千里迢迢．（tiáo）D．肖．像（xiào）藩篱．（lí）滑稽．（jī）矫．揉造作（jiǎo）5．下列词语书写全都正确的一项是（B）A．题拔（跋）迁徙恍然大悟沧海一粟B．亢奋蔓延心不在焉心旷神怡C．范畴宽怒（恕）冥思苦想所向披靡D．闲暇前仆后继绿草如阴（茵）震耳欲聋【时间：2分钟每小题：20分满分：100分】班级：姓名：成绩：1．下列句子中加点字注音有误的一项是（）A．宁静的山村，炊烟是房屋升起的云朵，轻盈飘缈（miǎo）。
人教版高一英语 限时练3-4
Olympic fans should consider visiting the Beijing Olympic Park to check out the special buildings of the so-called “Bird’s Nest” and “Water Cube”—the national stadium and aquatics center built for the 2008 Beijing Olympics. Popular historic places in Beijing include the Forbidden City the Summer Palace, and Tian’anmen Square.
寒假英语作业限时练（3）
第Ⅰ卷(共55分)
第二部分阅读理解(共两节，满分40分)
第一节(共11小题，每小题2.5分，满分27.5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。
A
Since the modern Olympics began in 1896, it has been held in more than 40 different cities. That gives Olympic fans quite a few possible travel destinations to choose!
4.How long did the taikonauts live in space?
A.About 134 daysB.Less than 90 daysC.24 daysD.3 months
5.What does the underlined word “extravehicular” in Paragraph 4 mean?
九年级英语限时训练(附参考答案)
九年级英语限时训练（附参考答案）（满分45分时间25分钟）一、听力（共10小题；每小题1分，满分10分）（一）录音中有五个句子，每个句子听一遍，然后从每小题A、B、C中选出适合每个句子的答语。
（5分）1. A. Qingdao. B. Xi'an. C. Kunming.2. A. At 6:00 p. m. B. At 11:00 p. m. C. At 6:00 a. m.3. A. At home. B. A dictionary. C. When he was ten.4. A. Sorry, I don't. B. Certainly, I could. C. OK, here you are.5. A. Don't do it. B. Me neither. C. Good idea.（二）在录音中你将听到一段短文及五个问题。
根据短文内容及问题选择正确答案。
短文及问题听两遍。
（5分）6.A. 13 years old. B. 14 years old. C. 15 years old.7. A. She likes reading and running.B. She likes painting and jogging.C. She likes dancing and singing.8. A. She thinks it is interesting. B. She thinks it is difficult. C. She thinks it is easy.9. A. She is a math teacher. B. She is a policewoman. C. She is a doctor for children.10. A. Jane works hard at math.B. Jane's aunt asked her to do more exercises.C. Jane got the right answer of the math problem.二、完形填空（共10小题；每小题1分，满分10分）阅读下面短文，掌握其大意，然后从每题所给的A、B、C三个选项中，选出能填入短文相应空白处的最佳选项，并在答题卡上将该项涂黑。
2021届高考语文(全国版)二轮复习参考练习：古诗文阅读板块限时练(一)～(三)
古诗文阅读板块限时练（一）(时间：30分钟满分：34分)一、文言文阅读(19分)阅读下面的文言文，完成1～4题。
赵尚宽，字济之，河南人，参知政事安仁子也。
知平阳县。
邻邑有大囚十数，破械夜逸，杀居民，将犯境，尚宽趣尉出捕，曰：“盗谓我不能来，方怠惰，易取也。
宜亟往，毋使得散漫且为害。
”尉既出，又遣徼巡兵蹑其后，悉获之。
知忠州，俗畜蛊①杀人，尚宽揭方书．．市中，教人服药，募索为蛊者穷治，置于理②，大化其俗。
转运使持盐数十万斤，谭③民易白金，期会促，尚宽发官帑．．所储副其须，徐与民为市，不扰而集。
嘉祐中，以考课．．第一知唐州。
唐素沃壤，经五代乱，田不耕，土旷民稀，赋不足以充役，议者欲废为邑。
尚宽曰：“土旷可益垦辟，民稀可益招徕，何废郡之有？”乃按视图记得汉召信臣④陂渠故迹益发卒复疏三陂一渠溉田万余顷又教民自为支渠数十转相浸灌而四方之民来者云布，尚宽复请以荒田计口授之，及贷民官钱买耕牛。
比三年，榛莽复为膏腴，增户积万余。
尚宽勤于农政，治有异等之效，三司使包拯与部使者交上其事，仁宗闻而嘉之，下诏褒焉，仍进秩赐金。
留于唐凡五年，民像以祠，而王安石、苏轼作《新田》《新渠》诗以美之。
徙同、宿二州，河中府神勇卒苦大校贪虐，刊匿名书告变，尚宽命焚之，曰：“妄言耳。
”众乃安。
已而奏黜校，分士卒隶他营。
又徙梓州。
尚宽去唐数岁，田日加辟，户日益众，朝廷推功，自少府监以直龙图阁．．．．知梓州。
积官至司农卿，卒，诏赐钱五十万。
(节选自《宋书·循吏传》) [注]①蛊：传说中一种人工培育的毒虫。
②理：司法衙署，狱官。
③谭：通“谈”，与……商谈。
④召信臣：西汉水利名臣，字翁卿，九江寿春(今安徽省寿县)人。
1．下列对文中画波浪线部分的断句，正确的一项是(3分)()A．乃按视图/记得汉召信臣陂渠故迹/益发卒复疏三陂/一渠溉田万余顷/又教民自为支渠数十/转相浸灌/B．乃按视图记得/汉召信臣陂渠故迹/益发卒复疏三陂一渠/溉田万余顷/又教民自为支渠数十/转相浸灌/C．乃按视图记/得汉召信臣陂渠故迹/益发卒复疏三陂一渠/溉田万余顷/又教民自为支渠数十/转相浸灌/D．乃按视图记/得汉召信臣陂渠故迹/益发卒复疏三陂/一渠溉田万余顷/又教民自为支渠数十/转相浸灌/解析：选C此类试题解答时，应先疏通大意，然后利用句中的人名、地名、官职名、文言虚词、句子结构以及语段中动词的宾语或补语等断句。
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答案 A 7.右面程序框图是为了求出满足 3n－ 2n>1 000 的最小偶数 n， 那么在◇和▭两个空白框中，可以分别填入( ) A.A>1 000 和 n＝n＋1 B.A>1 000 和 n＝n＋2 C.A≤1 000 和 n＝n＋1 D.A≤1 000 和 n＝n＋2
解析 由题意选择 3n－2n>1 000，则判定框内填 A≤1 000，因为 n 为偶数，且 n 初始值为 0， “▭”中 n 依次加 2 可保证其为偶数，所以“矩形框内”应填 n＝ n＋2. 答案 D 8.如图，在边长为 2 的正方形 ABCD 中， M 是 AB 的中点， 则过 C， M， D 三点的抛物线与 CD 围成阴影部分的面积是 ( ) A. 2 3 B. 4 3
x2 y2 a b
解析 由题意，得 ＝ ，∴b＝c，∴a＝ 2c，∴e＝ ＝ 答案 B
b c c b
c a
2 . 2
5.安排 3 名志愿者完成 4 项工作，每人至少完成 1 项，每项工作由 1 人完成， 则不同的安排方式共有( ) A.12 种 B.18 种 C.24 种 D.36 种
解析 只能是一个人完成 2 项工作，剩下 2 人各完成一项工作.由此把 4 项工作
1 2
3 4
→ 解析 因为 PnPn＋1＝OPn＋1－OPn ＝(n＋1，an＋1)－(n，an)＝(1，an＋1－an)＝(1，2)， 所以 an＋1－an＝2. 所以{an}是公差为 2 的等差数列. 1 由 a1＋2a2＝3，得 a1＝－ ， 3
n 1 4 所以 Sn＝－ ＋ n(n－1)×2＝n n－ . 3 2 3
答案 C 10.某几何体的三视图如图所示，则该几何体的体积为( )
A.
9＋ 3 6
π
6＋ 3 B. π 6
C.
3＋ 3 π 6
D.
12＋ 3 6
π
1 3 解析 由三视图可得，直观图为圆锥的 与圆柱的 组合体，由图中数据可得几 2 4 11 3 9＋ 3 何体的体积为 · ·π·12· 3＋ π·12·2＝ π. 23 4 6 答案 A 11.已知动直线 l0：ax＋by＋c－2＝0(a>0，c>0)恒过点 P(1，m)且 Q(4，0)到动直 线 l0 的最大距离为 3，则 A. 9 2 9 B. 4 1 2 ＋ 的最小值为( ) 2a c C.1 D.9
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2π 2π 5π 上单调递增，且 f >f ，则 3 3 6
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D.
3 2
解析 由函数 f(x)＝sin ωx(ω>0)在区间 0， 由f
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2π 2π π 3 上单调递增，得 ≤ ⇒ω≤ . 3 3 2ω 4
)
( ) ( )
2π 5π 5π π 3 3 3 >f ，得 > ，ω> ，所以 <ω≤ . 3 6 6 2ω 5 5 4
2·A3＝36 种. 分成 3 份再全排得 C4
答案 D 6.设数列{an}满足 a1＋2a2＝3，点 Pn(n，an)对任意的 n∈N*，都有 PnPn＋1＝(1， 2)，则数列{an}的前 n 项和 Sn 为( ) A.n n－ C.n －
( ) (n )
2 3
4 3
B.n n－
D.n －
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4 1 2 9 ＝ 时取等号.∴ ＋ 的最小值为 . 3 2a c 4 答案 B 12.已知函数 f(x)＝x＋xln x，若 k∈Z，且 k(x－2)<f(x)对任意的 x>2 恒成立，则 k 的最大值为( ) A.3 B.4 C.5 D.6
解析 先画 f(x)＝x＋xln x 的简图，设 y＝k(x－2)与 f(x)＝x＋xln x 相切于 M(m，
解析 M 为偶数集，N 为奇数集，因此 PM. 答案 B 2.设复数 z 满足(1＋i)z＝2i，则|z|＝( ) A. 1 2 2i B. 2 2 C. 2 D.2
解析 z＝ 答案 C
2i（1－i） 2i＋2 ＝ ＝ ＝i＋1，则|z|＝ 12＋12＝ 2. 1＋i （1＋i）（1－i） 2
1 3.设命题 p： ∃x0∈ (0，＋∞)， x0＋ 0>3；命题 q： ∀x∈ (2，＋∞)， x2>2x，则下
5 C. 2
8 D. 3
解析 由题意，建立如图所示的坐标系，则 D(2，1)，设抛 1 x 物线方程为 y2＝ 2px，代入 D 点坐标，可得 p＝ ，∴ y＝ 4 2
2
，∴S＝2 答案 D
∫
0
3 2 2 8 dx＝ 2· x2 ＝ . 2 3 0 3
x
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9.若函数 f(x)＝ sin ω x(ω>0)在区间 0， ω 的一个可能值是( ) A. 1 2 3 B. 5 C. 3 4
x
列命题为真的是( ) A.p∧(綈 q) C.p∧q B.(綈 p)∧q D.(綈 p)∨q
1 解析 命题 p： ∃x0∈ (0，＋ ∞)， x0＋ 0>3 是真命题，例如取 x0＝ 4.命题 q： ∀x
x
∈(2，＋∞)，x2>2x 是假命题(取 x＝4 时，x2＝2x)，綈 q 为真命题. 因此 p∧(綈 q)为真命题. 答案 A 4.已知椭圆 C： 2＋ 2＝1(a>b>0)的左焦点为 F(－c，0)，上顶点为 B，若直线 y c ＝ x 与 FB 平行，则椭圆 C 的离心率为( ) b A. 1 2 B. 2 2 C. 3 2 D. 6 3
限时练(三) (限时：40 分钟) 一、选择题(本大题共 12 个小题，每小题 5 分，共 60 分.在每小题给出的四个选 项中，只有一项是符合题目要求的.) 1.设集合 M＝ {x|x＝ 2n， n∈ Z}， N＝ {x|x＝ 2n＋ 1， n∈ Z}， P＝ {x|x＝ 4n， n∈ Z}，则( ) A.MP C.N∩P≠∅ B.PM D.M∩N≠∅