2#楼大体积混凝土施工方案

一、名词解释（每个2分，共10分）1、球面角超：球面四边形或三角形内角之和与平面四边形或三角形内角之差称为四边形球面角超或三角形球面角超。

2、总椭球体：总椭球体的中心与地球的质心重合，其短轴与地球的地轴重合，起始子午面与起始天文子午面重合，而且与地球体最佳密合的椭球体。

3、大地主题反算：已知椭球面上两点的大地经纬度求解两点间的大地线长度与正反方位角。

4、子午线收敛角：高斯投影面上任意点子午线的投影线的切线方向与该点坐标的正北方向的夹角。

5、水准标尺基辅差：精密水准标尺同一视线高度处的基本分划与辅助分划之差。

二、填空（每空1分，共30分）1、以___________作为基本参考点，由春分点___________运动确定的时间称为恒星时;以格林尼治子夜起算的___________称为世界时。

2、ITRF 是___________的具体实现，是通过IERS分布于全球的跟综站的_________和_________来维持并提供用户使用的。

3、高斯投影中，_____投影后长度不变，而投影后为直线的有_____，其它均为凹向_____的曲线。

4、重力位是--___________和___________之和，重力位的基本单位是___________。

5、大地线克莱劳方程决定了大地线在椭球面上的_______，某大地线穿越赤道时的大地方位角A= 60°，则能达到的最小平行圈半径为长半轴a的_____倍。

6、正常重力公式是用来计算______ 正常重力, 其中系数是称为___________。

高出椭球面H米高度处正常重力与椭球表面正常重力间的关系为____________。

7、在大地控制网优化设计中把__________、__________和__________作为三个主要质量控制标准。

8、地面水平观测值归算至椭球面上需要经过__________、___________、_____________改正。

我的揪痧瘾（2020、2）我的揪痧瘾医⽣在线⽹2008/12/1709:22来源：我叫⼩美，⼩时侯经常看见⼈们揪痧，但从没体验过，是在我⾼中后，有⼀次重感冒，吃药也不见好，晚上妈妈说我给你揪揪痧吧，我没说什么，妈妈就在我脖⼦后边揪开了，刚开始还不是很疼，但随着吧吧的揪痧声，妈妈的⼿劲越来越⼤，我疼的乱叫，妈妈说痧很重，必须得揪透了才⾏，不管我怎么喊叫，妈妈就是不停⼿，⽽且我越动她就越⽤⼒，我只好咬着⽛强忍着，妈妈从脖⼦⼀直连着揪到肩膀，⼜把整个后背都揪了个遍.我以为终于揪完了，可妈妈⼜在我前胸揪了起来，特别疼，我眼泪都出来了，可妈妈就是不⼿软，揪了⼀个多⼩时，只到把我上⾝揪的紫⿊紫⿊的没⼀块好地⽅才罢⼿，揪出我⼀⾝汗，可别说，揪完我就特轻松舒服了.从此以后我⼀感冒发烧的就让妈妈给揪，我还真喜欢上了这种痛并很快乐的感觉.隔⼀段时间不舒服了就让⽼妈给揪揪全⾝.后来结婚了，我很希望⽼公能给我好好揪⼀次，可他不喜欢揪，总也不给我揪，⽽且他不舒服也不让我给他揪.有⼀次我发烧，晚上实在难受的不⾏，让⽼公给揪揪他怎么也不肯，后来看我不⾏就给我在后背刮了刮痧，可我总觉的没有揪痧的过瘾.⽣完孩⼦后我落下了腰疼的⽑病，去诊所拔了⼏次罐后，感觉挺管⽤，⽼公看我腰疼的直不起来也很着急，后来我治我的腰学会了拔罐，经常在我腰疼的时候给我拔罐、⾛罐、按摩、揪痧等，现在⽼公拔罐揪痧的技术很⾼，不光给我整治腰，在我感冒的时候也会给我揪痧、拔罐，现在我⼜可以感受揪痧拔罐了。

在⽼公的经常拔罐按摩下我的腰疼的次数少多了。

在我的影响下⽼公也爱上了揪痧拔罐，在他不舒服的时候，我也会很体贴的为他揪痧拔罐，他也没那么怕疼了。

现在⽼公⼀不舒服就主动让我给他揪痧。

我们两经常是旧痕未去⼜添新伤，但我们都很快乐！⽼公有⼀次在外地感冒了给我打电话说：“⽼婆我越来越离不开你了，你要在我⾝边就可以给我揪痧了，我真的好难受。

”我说：“你以前不是怕疼⽼不让揪吗？现在想起我的好了？你到外边诊所拔拔罐吧！回来我给你揪。

周边地面——对没有地下室的建筑指底层房间外墙内侧两米范围内的地面。

对有地下室埋墙的建筑，指从室外地面和埋墙的交线算起向下两米内为周边地面。

非周边地面——对没有地下室的房间指底层地面中周边地面以外的部分。

有地下室埋墙的建筑，非周边地面指埋墙和地面面积的和减去从室外地面和埋墙交线算起向下两米的面积。

关于周边地面和非周边地面的几点说明1．周边地面和非周边地面的定义周边地面指距外墙内表面2m以内的地面，其余部分划为非周边地面。

位于室外地面以下的外墙（地下室外墙）应从与室外地面相平的墙壁算起，往下2m范围内为周边地面，其余部分划为非周边地面。

2．节能标准中对周边地面和非周边地面传热阻的计算《民用建筑节能设计标准》（采暖居住部分）JGJ26-95和《公共建筑节能设计标准》GB50189-2005对周边地面和非周边地面热阻采用了不同的计算方法，应分别对待。

A) 居住建筑：换热阻计算依据来源于《供热工程》（贺平孙刚编著）。

由于室内热量通过地面传到室外的路程长短不同，即热阻值不同，靠近外墙的室内地面，距离室外路程短，热阻值小，传热量大，反之远离外墙的地面热阻值大，传热量小，离外墙8m以远的地面，传热量基本不变。

基于上述情况，在工程上一般采用近似方法计算，把地面沿外墙平行的方向分成四个计算地带（每2m为一个地带，8m以外地面按第四地带考虑），如图1示。

1) 对于贴土非保温地面（组成地面的各层材料导热系数λ都大于1.16W/m?℃），各地带的传热系数和换热阻如下：周边地面传热系数限值为0.52 W / m2·℃地区，考虑到非保温地面第一地带（周边地面）的传热系数为0.47 W / m2·℃，小于限值0.5 2W / m2·℃,可不做保温；非周边地面（第二、三、四地带）不做保温时传热系数最大值为0.23 W / m2·℃,小于限值0.3 W / m2·℃，同样也能满足非周边地面限值的要求。

为了帮助大家高效备考托福，为大家带来托福TPO42阅读Passage2原文文本+题目+答案解析，希望对大家备考有所帮助。

Explaining Dinosaur Extinction Dinosaurs rapidly became extinct about 65 million years ago as part of a mass extinction known as the K-T event,because it is associated with a geological signature known as the K-T boundary,usually a thin band of sedimentation found in various parts of the world(K is the traditional abbreviation for the Cretaceous,derived from the German name Kreidezeit).Many explanations have been proposed for why dinosaurs became extinct.For example,some have blamed dinosaur extinction on the development of flowering plants,which were supposedly more difficult to digest and could have caused constipation or indigestion—except that flowering plants first evolved in the Early Cretaceous,about 60 million years before the dinosaurs died out.In fact,several scientists have suggested that the duckbill dinosaurs and homed dinosaurs,with their complex battery of grinding teeth,evolved to exploit this new resource of rapidly growing flowering plants Others have blamed extinction on competition from the mammals,which allegedly ate all the dinosaur eggs—except that mammals and dinosaurs appeared at the same time in the Late Triassic,about 190 million years ago,and there is no reason to believe that mammals suddenly acquired a taste for dinosaur eggs after 120 million years of coexistence Some explanations(such as the one stating that dinosaurs all died of diseases)fail because there is no way to scientifically test them,and they cannot move beyond the realm of speculation and guesswork. This focus on explaining dinosaur extinction misses an important point the extinction at the end of the Cretaceous was a global event that killed off organisms up and down the food chain.It wiped out many kinds of plankton in the ocean and many marine organisms that lived on the plankton at the base of the food chain.These included a variety of clams and snails,and especially the ammonites,a group of shelled squidlike creatures that dominated the Mesozoic seas and had survived many previous mass extinctions.The K-T event marked the end of the marine reptiles,such as the mosasaurs and the plesiosaurs,which were the largest creatures that had ever lived in the seas and which ruled the seas long before whales evolved.On land,there was also a crisis among the land plants,in addition to the disappearance of dinosaurs.So any event that can explain the destruction of the base of the food chain(plankton in the ocean,plants on land)can better explain what happened to organisms at the top of the food chain,such as the dinosaurs.By contrast,any explanation that focuses strictly on the dinosaurs completely misses the point The Cretaceous extinctions were a global phenomenon,and dinosaurs were just a part of a bigger picture. According to one theory,the Age of Dinosaurs ended suddenly 65 million years ago when a giant rock from space plummeted to Earth.Estimated to be ten to fifteen kilometers in diameter,this bolide(either a comet or an asteroid)was traveling at cosmic speeds of 20-70 kilometers per second,or 45,000-156,000 miles per hour.Sucha huge mass traveling at such tremendous speeds carries an enormous amount of energy.When the bolide struck this energy was released and generated a huge shock wave that leveled everything for thousands of kilometers around the impact and caused most of the landscape to burst into flames.The bolide struck an area of the Yucatan Peninsula of Mexico known as Chicxulub,excavating a crater 15-20 kilometers deep and at least 170 kilometers in diameter.The impact displaced huge volumes of seawater,causing much flood damage in the Caribbean.Meanwhile,the bolide itself excavated 100 cubic kilometers of rock and debris from the site,which rose to an altitude of 100 kilometers.Most of it fell back immediately,but some of it remained as dust in the atmosphere for months.This material,along with the smoke from the fires,shrouded Earth,creating a form of nuclear winter.According to computerized climate models,global temperatures fell to near the freezing point,photosynthesis halted,and most plants on land and in the sea died.With the bottom of the food chain destroyed,dinosaurs could not survive. paragraph 1 Dinosaurs rapidly became extinct about 65 million years ago as part of a mass extinction known as the K-T event,because it is associated with a geological signature known as the K-T boundary,usually a thin band of sedimentation found in various parts of the world(K is the traditional abbreviation for the Cretaceous,derived from the German name Kreidezeit).Many explanations have been proposed for why dinosaurs became extinct.For example,some have blamed dinosaur extinction on the development of flowering plants,which were supposedly more difficult to digest and could have caused constipation or indigestion—except that flowering plants first evolved in the Early Cretaceous,about 60 million years before the dinosaurs died out.In fact,several scientists have suggested that the duckbill dinosaurs and homed dinosaurs,with their complex battery of grinding teeth,evolved to exploit this new resource of rapidly growing flowering plants Others have blamed extinction on competition from the mammals,which allegedly ate all the dinosaur eggs—except that mammals and dinosaurs appeared at the same time in the Late Triassic,about 190 million years ago,and there is no reason to believe that mammals suddenly acquired a taste for dinosaur eggs after 120 million years of coexistence Some explanations(such as the one stating that dinosaurs all died of diseases)fail because there is no way to scientifically test them,and they cannot move beyond the realm of speculation and guesswork. 1.In paragraph 1,why does the author include a discussion of when flowering plants evolved? 【事实信息题】 A.To help explain why some scientists believe that the development of flowering plants led to dinosaur extinction。

20. Fishing is my favourite sport. I often fish for hours without catching anything. But this does not worry me. Some fishermen are unlucky. Instead of catching fish, they catch old boots and rubbish. I am even less lucky. I never catch anything—not even old boots. After having spent whole mornings on the river, I always go home with an empty bag. 'Y ou must give up fishing!' my friends say.' It's a waste of time.' But they don't realize one impor tant thing. I'm not really interested in fishing. I am only interested in sitting in a boat and doing nothing at all !21. Aeroplanes are slowly driving me mad. I live near an airport and passing planes can be heard night and day. The airport was built during the war, but for some reason it could not be used then. Last year, however, it came into use. Over a hundred people must have been driven away from their homes by the noise. I am one of the few people left. Sometimes I think this house will be knocked down by a passing plane. I have been offered a large sum of money to go away, but I am determined to stay here. Everybody says I must be mad and they are probably right.22. My daughter, Jane, never dreamed of receiving a letter from a girl of her own age in Holland. Last year, we were travelling across the Channel and Jane put a piece of paper with her name and address on it into a bottle. She threw the bottle into the sea. She never thought of it again, but ten months later, she received a letter from a girl in Holland. Both girls write to each other regularly now. However, they have decided to use the post-office. Letters will cost a litt1e more, but they will certainly travel faster.23. I had a letter from my sister yesterday. She lives in Nigeria. In her letter, she said that she would come to England next year. If she comes, she will get a surprise. We are now living in a beautiful new house in the country. Work on it had begun before my sister left. The house was com pleted five months ago. In my letter, I told her that she could stay with us. The house has many large rooms and there is a lovely garden. It is a very modern house, so it looks strange to some people. It must be the only modern house in the district.24. entered the hotel manager's office and sat down. I had just lost &50 and I felt very upset.' I left the money in my room,' I said, 'and it's not there now.' The manager was sympathetic, but he could do nothing. 'Everyone's losing money these days,' he said. He started to com plain about this wicked world but was interrupted by a knock at the door. A girl came in and put an envelope on his desk. It contained &5o. 'I found this outside this gentleman's room' she said. 'Well,' I said to the manager, 'there is still some honesty in this world !'25. I arrived in London at last. The railwaystation was big, black and dark. I did not know the way to my hotel, so I asked a porter. I not only spoke English verycarefully, but very clearly as well. The porter, however, could not understand me; I repeated my question several times and at last he understood. He answered me, but he spoke neither slowly nor clearly. 'I am a foreigner,' I said. Then he spoke slowly, but I could not under stand him. My teacher never spoke Eng- lish like that! The porter and I looked at each other and smiled. Then he said something and I understood it. 'Y ou'll soon learn English!' he said. I wonder. In England, each man speaks a different language. The English understand each other, but I don't understand them ! Do they speak English ?。

2的书写方法在日常生活中，我们经常会涉及到数字2的书写。

无论是在学习、工作还是生活中，正确的书写方法都是非常重要的。

下面，我们就来详细了解一下数字2的书写方法。

首先，我们要明确数字2的基本形态。

数字2是阿拉伯数字中的一个，它的基本形态是一个弯曲的弧线，上面有一个小圆圈。

这是我们最常见的数字2的书写形式，也是最标准的书写形式。

在书写时，我们需要注意保持数字2的整体形状，保持圆润、匀称，不要出现歪斜、变形等情况。

其次，我们要注意数字2的书写顺序。

在书写数字2时，一般是从上到下、从左到右的书写顺序。

首先画出数字2的上半部分的曲线，然后再画下半部分的曲线，最后在上半部分的曲线上方画一个小圆圈。

这样的书写顺序可以帮助我们更好地掌握数字2的书写方法，保持数字的整体形状和美观度。

除了基本形态和书写顺序外，我们还需要了解数字2的书写规范。

在正式的文件、文书、报告中，数字2的书写需要符合一定的规范。

一般来说，数字2要与其他数字保持一致的字体、大小和风格，以保持整个文档的统一性和美观度。

在手写时，我们也需要注意字迹工整、规范，避免出现潦草、模糊的情况。

此外，数字2的书写还需要注意与其他数字的区分。

在一些情况下，数字2可能会与字母z混淆，因此在书写时要特别小心，确保数字2的书写清晰可辨，不会引起误解。

总的来说，正确的数字2的书写方法对我们的学习、工作和生活都是非常重要的。

通过掌握数字2的基本形态、书写顺序和书写规范，我们能够更好地书写出整洁、规范的数字2，提高书写质量，避免出现错误和混淆。

希望大家能够重视数字2的书写方法，不断提升自己的书写水平，为自己的学习和工作增添亮点。

国开(中央电大)专科《人文英语2》网上形考(单元自测1至8)试题及答案国开(中央电大)专科《人文英语2》网上形考(单元自测1至8)试题及答案说明：课程代码：04014；适用专业及层次：法学、广告、汉语言文学、教育管理、社会工作、小学教育和学前教育专科；考试平台：http：//。

单元自测1试题及答案题目为随机，用查找功能(Ctrl+F)搜索题目[题目]_____dangerous it is to ride fast on a busy road![答案]How[题目]_____pity you missed the lecture again![答案]What a[题目]-.What do you think about my hometown？-_____________________.[答案]The greatest part about the town,in my opinion,is the beautiful lake and mountain.[题目]-What about mailing itin the fastest way？-_____________________.[答案]By air mail[题目]-Wouldyou like me to help you to make a plan today for the summer vacation？-_____________________.[答案]It is nice of you to say so,but I＇m busy tonight.[题目]-Wow!This is a marvelous room!You must spend a lot of timeand energy in it.-_____________________.[答案]Thanks you.It really cost me that much.[题目]–How far is the Great Bay from your house？-_____________________.[答案]The Great Bay is five minutes away from my house and it＇s fantastic.[题目]A double room with a balcony overlooking the seahad been_____for him.[答案]reserved[题目]At a time of this economic crisis, our_____should be very clear about what we need to do.[答案]priority[题目]Criminals are given the_____of going to jail or facing public humiliation. [答案]option[题目]If there is any change about the time of the meeting,please notify us_____.[答案]in advance[题目]The Chinese Red Crosscontributed a_____sum to the relief of the physically disabled.[答案]general[题目]There_____two hundred dollars to pay.[答案]is[题目]There must be something wrong with my computer,_____there？[答案]isn＇t二、英译汉：为句子选择正确的翻译。

第一关：攻打台湾海峡首先应该发展一下，要多造电厂，因为旁边的盟军建筑耗掉不少电，所以工程师只先占雷达和电厂。

派一辆天启到旁边的高科技基地把藏在那里的幻影坦克给灭掉，同时派工程师进入，这样多了一个防空武器。

多造一些防空，排在基地前。

最好用防空步兵，效果好，别忘了多用X键。

逐步占领盟军的建筑，造一些多功能步兵车防空，出核弹，造光棱坦克若干，造一到两个蜘蛛，让蜘蛛延屏幕左侧向下探出桥，注意，那里有守兵，探路时按Alt。

蜘蛛就别要了，不过技术好的话整他一辆车也算立功。

在稳固基地防守后，用天启光棱各两辆去摆平那些守军，占领桥头，小心敌军蜘蛛，然后炸桥，最好用伊文。

接下来就多防空，用修理车修理坦克们，省钱。

资源有限，造几个TANYA下水，把附近的海面清空。

买造船厂，TANYA 保护，用几个飞行兵由基地直向右探出全屏，消灭蜘蛛与附近的幻影，用夜鹰载一工程师到岛上，占领全屏后，深吸一口气：乖乖，恐怖呀！跟当年看见正版盟军最后一关一样"蓝色"屏幕。

多造TANYA，在水上建立防空群，第一次用核弹炸掉心灵信标。

注意后方的敌军，放两个天启吧！下面进入进攻时期，没别的，屯兵打他，建议可以用无畏级吸引敌方防空，基洛夫去炸电厂，最好炸基地，用天启加光棱加防空履带车加TANYA进攻，桥后方的防御武器会重复造很多次（基地在的话）用来升级吧，不过确定敌方没电了，不然惨了，反被血洗。

如果钱多的话可以用自制自爆车炸，爽！！什么？你不会造拜托，伊文加多功能步兵车！剩下的是练你本事的，不多言，提醒一句：多配合空军，小心尤里。

第二关：台北之战逮凌凌漆？不会是星爷吧！^_^任务包的简单攻略中提到的，用汽车探地图，俘虏天启和狙击不用说。

小心建筑旁的幻影，尤里要把握好。

用间谍断电后用天启消灭守军，炸开体育场一角。

占领机场获得伞兵，用尤里控制校车，装进小兵，别忘了给小兵编号，搞定凌凌漆。

这里对微操作水平有一定要求。

任务一完成。

下面的任务就是防守反击，没什么技巧，我间谍用的不好，所以停电攻击电力中心我没用，占了西北角的基地，（用天启，光棱会把基地给炸了），可以无限钱，所以，多造点防空兵防守，然后我用了几万块钱的基洛夫把他电力中心洗了，奢侈。

号码复式三中三,三中二计算方法:n(n-1)---------=二中二的组数,如10个号是（10×9÷2）＝45组!2n(n-1)(n-2)---------------- =三中二（或三中三）的组数,如10个号（10×9×8÷6）＝120组!3*2 *1n(n-1)(n-2)(n-3)----------------------- =四中四（或四中二）的组数,如10个号（10×9×8×7÷24）＝210组!4* 3*2 *1n(n-1)(n-2)(n-3)(n-4)---------------------------- =五中五（或五中二）的组数,如10个号（10×9×8×7×6÷120）＝252组!5* 4* 3*2 *1n(n-1)(n-2)(n-3)(n-4)(n-5)--------------------------------- =六中六（或六中二）的组数,如10个号（10×9×8×7×6×5÷720）＝210组! 6* 5* 4* 3* 2 * 1复式连（三中三）（三中二）赔率表:===============================================组合个数‖ 组数‖ 中二个‖ 中三个‖ 中四个‖ 中五个 ‖ 中六个 ‖===============================================4 ‖ 4 ‖ 2组 ‖ 3组＋1 ‖ 0组＋4 ‖===============================================5 ‖ 10 ‖ 3组 ‖ 6组＋1 ‖ 6组＋4 ‖ 0组＋10‖===============================================6 ‖ 20 ‖ 4组 ‖ 9组＋1 ‖ 12组＋4‖ 10组＋10 ‖ 0组＋20‖===============================================7 ‖ 35 ‖ 5组 ‖ 12组＋1‖ 18组＋4‖ 20组＋10‖ 15组＋20‖===============================================8 ‖ 56 ‖ 6组 ‖ 15组＋1‖ 24组＋4‖ 30组＋10‖ 30组＋20‖===============================================9 ‖ 84 ‖ 7组 ‖ 18组＋1‖ 30组＋4‖ 40组＋10‖ 45组＋20‖===============================================10 ‖ 120 ‖ 8组 ‖ 21组＋1‖ 36组＋4‖ 50组＋10‖ 60组＋20‖===============================================11 ‖ 165 ‖ 9组 ‖ 24组＋1 ‖ 42组＋4‖ 60组＋10‖ 75组＋20‖===============================================12 ‖ 220 ‖ 10组 ‖ 27组＋1‖ 48组＋4‖ 70组＋10‖ 90组＋20‖===============================================13 ‖ 286 ‖ 11组 ‖ 30组＋1‖ 54组＋4‖ 80组＋10‖ 105组＋20‖===============================================14 ‖ 364 ‖ 12组 ‖ 33组＋1‖ 60组＋4‖ 90组＋10‖ 120组＋20‖===============================================15 ‖ 455 ‖ 13组 ‖ 36组＋1‖ 66组＋4‖ 100组＋10‖ 135组＋20‖===============================================组合个数‖ 组数‖ 中二个‖ 中三个‖ 中四个‖ 中五个 ‖ 中六个 ‖===============================================2中2复式计算公式2个码=2*1/2=1组2中2复式计算公式3个码=3*2/2=3组3中3复式计算公式3个码=3*2*1/6=1组3中3复式计算公式4个码=4*3*2/6=4组4中4复式计算公式4个码=4*3*2*1/24=1组4中4复式计算公式5个码=5*4*3*2/24=5组5中5复式计算公式5个码=5*4*3*2*1/120=1组5中5复式计算公式6个码=6*5*4*3*2/120=6组6中6复式计算公式6个码=6*5*4*3*2*1/720=1组6中6复式计算公式7个码=7*6*5*4*3*2/720=7组7中7复式计算公式7个码=7*6*5*4*3*2*1/5040=1组7中7复式计算公式8个码=8*7*6*5*4*3*2/5040=8组注：其实很简单，所有的复式都有公式可算的，全有关连，细看一定能看出的。

2的乘法口诀表以下是十个关于2的乘法口诀：口诀一：一二得二嘿，小朋友们，一二得二可简单啦。

你就想啊，一个小娃娃有两只小手，这就是一二得二。

就像你每天早上拿两支铅笔准备写作业一样，一份东西是两个，这就是二呀。

这个口诀就像你打开数学小宝藏的第一把小钥匙，它能让你知道1和2相乘的结果就是2，记住这个小口诀，以后做数学题就像走平坦的小路一样顺畅哦。

口诀二：二二得四小朋友们呀，二二得四也好记呢。

你看，两个小鸭子是一组，再来一组同样的两个小鸭子，那一共就有四只小鸭子啦，这就是二二得四。

就好像你有两双小袜子，一双袜子是两只，两双不就是四只嘛。

这个口诀就像是两个小伙伴手拉手，它们紧紧挨在一起，结果就是4这个数字，是不是很容易就记住啦？口诀三：二三得六来喽，二三得六要记好。

想象一下，你有两朵小花，每朵小花有三个花瓣，那花瓣的总数就是二三得六。

或者说呀，有两个小盘子，每个盘子里放三颗小糖果，数一数，一共就是六颗糖果呢。

这就像两个三口之家在一起，总人数就是六个人。

这个口诀很实用的，以后做数学游戏的时候经常会用到哦。

口诀四：二四得八小朋友们听好啦，二四得八不难想。

你可以把它想象成有两条小虫子，每条小虫子有四个小脚，那小脚的总数就是二四得八。

再比如，有两个小盒子，每个小盒子里装着四个小弹珠，全部加起来就是八个小弹珠。

就像两个四边形，每个四边形有四条边，总共的边数就是八条边，这个口诀记住了，做数学就又多了一点小本事呢。

口诀五：二五一十嗨，二五一十很顺口的。

你看，我们一只手有五个手指头，那两只手呢？就有十个手指头啦，这就是二五一十。

又或者有两个小篮子，每个小篮子里装着五个小苹果，那苹果的总数就是十个。

就像两个五角星，每个五角星有五个角，加起来就是十个角。

这个口诀在生活中也经常能用到呢，像数东西的时候。

口诀六：二六十二小朋友，二六十二也不难哦。

想象一下，有两串糖葫芦，每串糖葫芦有六个山楂果，那山楂果的总数就是二六十二。

再好比有两个小书架，每个小书架有六层，那总共的层数就是十二层。

2是什么意思
2是一个网络用语，通常有多种理解意思，可以理解为“爱”，理解为“笨”、“傻”的意思，也可以形容一个人很活泼开朗、幽默并且个性，还可以用来形容人呆住、无语。

众所周知，在网络中，2通常有多种理解意思，一种理解为“爱”，如数字串“520”=我爱你，数字串“5201314”=我爱你一生一世，数字串“258”=爱我吧，数字串“7758258”=亲亲我吧爱我吧，数字串“52410”=我爱死你了。

其他一种理解为“笨”、“傻”的意思。

例如250，2货。

这种意思的2来源于"62"，近似于杭州方言“盒子”，用来形容人脑袋空空比较笨。

另一种意思就是形容一个人很活泼开朗，很幽默并且个性，比如说：“很2很光芒”。

还有一种用来形容人呆住、无语的意思，如：看到这个成绩我瞬间就2了。

同时，在北京方言里，2也表示一种傻，脑子不灵活的意思。

⽆忧考新概念频道为⼤家整理的新概念英语第四册课⽂及翻译：Lesson2，供⼤家参考。

更多阅读请查看本站频道。

　【课⽂】 First listen and then answer the following question. 听录⾳，然后回答以下问题。

How much of each year do spiders spend killing insects? Why, you may wonder, should spiders be our friends? Because they destroy so many insects, and insects include some of the greatest enemies of the human race. Insects would make it impossible for us to live in the world; they would devour all our crops and kill our flocks and herds, if it were not for the protection we get from insect-eating animals. We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders. Moreover, unlike some of the other insect eaters, spiders never do the harm to us or our belongings. Spiders are not insects, as many people think, nor even nearly related to them. One can tell the difference almost at a glance, for a spider always has eight legs and an insect never more than six. How many spiders are engaged in this work on our behalf? One authority on spiders made a census of the spiders in grass field in the south of England, and he estimated that there were more than 2,250,000 in one acre; that is something like 6,000,000 spiders of different kinds on a football pitch. Spiders are busy for at least half the year in killing insects. It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day. It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country. 【New words and expressions ⽣词和短语】 insect n. 昆⾍ devour v. 吞⾷ flock n. ⽺群 herd n. 牧群 beast n. 野兽 fraction n. ⼩部分 census n. 统计数字 acre n. 英亩 content adj. 满⾜的 【课⽂注释】 1. you may wonder 是这个疑问句的插⼊语。

汉字二的正确写法汉字是中国人民的文字和文化传承的重要组成部分。

其中，汉字二作为一个常见的汉字，其正确的写法具有重要意义。

本文将探讨汉字"二"的正确写法，并提供一些书写规范和技巧。

一、笔画顺序汉字二是一个非常简单的汉字，只包含一笔，其笔画顺序非常重要。

正确的笔画顺序可以帮助书写者提高书写速度和书写准确度。

在书写汉字二时，我们应该先写横折笔画，再写竖直笔画。

二、横折笔画横折笔画是汉字二的主要组成部分。

横折笔画应该从左上角开始，向右下方倾斜，形成一个较长的横线。

横线的长度可以根据个人喜好和书写空间的限制来调整，但是要保持横线的平直和统一。

三、竖直笔画竖直笔画是汉字二的另一个组成部分。

竖直笔画应该从横折笔画的右下方开始，向下方延伸，长度与横折笔画保持一致或稍长一些。

竖直笔画要直立且与横线相交。

四、书写规范除了正确的笔画顺序外，书写汉字二还应该遵循一些书写规范，以保证字形的美观和整齐。

以下是一些常见的书写规范：1. 字形比例：汉字二的字形应该保持适当的比例，横线和竖线的长度应该相对平衡，不宜过长或过短。

2. 笔画粗细：汉字二在书写时，横线和竖线的笔画宽度应该保持相对一致，不要出现明显的粗细不均。

3. 书写速度：书写汉字二时应尽量提高书写速度，以便提高书写效率和准确度。

可以通过反复练习和多次书写来提高书写速度。

五、书写技巧除了正确的笔画顺序和书写规范外，我们还可以采用一些书写技巧来提高汉字二的书写质量。

1. 练习常用字：汉字二作为一个常见字，我们可以通过多次书写和模仿来提高书写的技巧和速度。

2. 视频教学：现在网络上有许多提供汉字书写视频教学的资源，通过观看这些视频，我们可以学习到正确的字形和书写方法。

3. 使用规范字帖：规范字帖是一种专门用来练习书写汉字的工具。

使用规范字帖可以帮助我们掌握正确的字形和书写技巧。

六、总结正确书写汉字二是每个中国人都应该掌握的基本技能之一。

通过遵循正确的笔画顺序、书写规范和使用书写技巧，我们可以提高汉字二的书写质量和美观度。