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人教A版高中数学必修二直线与直线垂直教学设计
6.例二：如图在正方体ABCD-A’B’C’D’中，O’为底面A’B’C’D’的中心，求证：AO’⊥BD 证明：如图，连接B’D’,∵ABCD-A’B’C’D’是正方体∴BB’//DD’,BB’=DD’∴四边形BB’DD’是平行四边形∴B’D’//BD∴直线AO’与B’D’所成角即为直线AO’与BD所成角连接AB’,AD’易证AB’=AD’又O’为底面A’B’C’D’的中心∴O’为B’D’的中点∴AO’⊥B’D’,AO’⊥BD7.例三如图所示，四面体A－BCD中，E，F分别是AB，CD的中点.若BD，AC所成的角为60°，且BD＝AC＝2.求EF的长度.解：取BC中点O,连接OE,OF，如图。∵E,F分别是AB,CD的中点，∴OE//AC且OE=1/2AC,OF//AC且OF=1/2BD,∴OE与OF所成的锐角就是AC与BD所成的角∵BD,AC所成角为60°，∴∠EOF=60°或120°∵BD=AC=2,∴OE=OF=1当∠EOF=60°时，EF=OE=OF=1,当∠EOF=120°时，取EF的中点M,连接OM,则OM⊥EF,且∠EOM=60°∴EM= ,∴EF=2EM=
2022年海南省中考英语真题（解析版）
In the late autumn, John was badly ill andbecame bedridden (长期卧床的).After the doctor visited John several times, he told Sue, “His condition isquite ___22___.John seems to have lost all will to live. If he doesn’t want to live, medicineswill not help him.”
2022年海南省中考英语真题（原卷版）
YangHongwei, 56, was born into a kite-making family in Weifang. When she was young,she often saw kites with bright colors and different shapes in hergrandfather’s workshop.
2022年河南省中考英语真题（原卷版）
In the large yard stood thirteen trees ofdifferent sizes. One day, while Joey was playing with his sister under thetrees, he noticed that a tree trunk (树干) had a sad look. He raninto the house to tell his mom about it. She told Joey to find the reason whyit was sad.
2022年河北省中考英语真题（原卷版）
As a boy, Kevin visited national parks and helearned the Earth is in ___12___ condition. He felt worried, and hewanted to ___13___ the Earth. In 2009, he went to swim in water nearNorth Pole（北极）todraw people’s attention to the melting glaciers（融化的冰川）.
2022年江西省中考英语真题（原卷版）
Long ago, a poor old couple lived on the coast.One day, an old storyteller came to their village. The old couple gave him ameal. In return, he gave them a coffee mill (磨粉机)and said, “Say, ‘Mill, please grind (磨粉)’,”
2022年河南省中考英语真题（解析版）
In the large yard stood thirteen trees ofdifferent sizes. One day, while Joey was playing with his sister under thetrees, he noticed that a tree trunk (树干) had a sad look. He raninto the house to tell his mom about it. She told Joey to find the reason whyit was sad.
2022年河北省中考英语真题（解析版）
As a boy, Kevin visited national parks and helearned the Earth is in ___12___condition. He felt worried, and he wanted to ___13___ the Earth. In 2009, he went to swim in waternear North Pole（北极）todraw people’s attention to the melting glaciers（融化的冰川）.
2022年江西省中考英语真题（解析版）
The app — called Sit With Us — is ___15___. If a student is having lunch in the afternoon,he or she can create an invitation. Other students can open the app and ___16___ that invitation. They can then use the app todecide when and where to ___17___.
2022年福建省中考英语真题（原卷版）
Thinking that her dream could never come true,Kelly was in low spirits and ____18____ her studies at school. Hermother did all she could to cheer her up, ____19____ Kelly refused tochange. She even took out all her anger and ____20____ on her mother.
2022年福建省中考英语真题（解析版）
At the age of nine, Kelly dreamed of being abasketball player. But one day when she was playing basketball, she hurt herleft leg ____16____.
2022年安徽省中考英语真题（解析版）
Antarctica lies in the most southern part of theworld. It is the coldest area on Earth. There isn’t much rain, but there is alot of snow and wind. The lowest temperature was on 21 July in 1983 at -89.2℃!
2022年安徽省中考英语真题（原卷版）
During 1907-1909, British explorer EarnestShackleton explored Antarctica on foot. In 1911, two explorers—a British mannamed Scott and a Norwegian named Amundsen—raced 1, 400 kilometres to the SouthPole (南极).Amundsen arrived first.
2022年吉林省中考英语真题（原卷版）
Taiping nijiaojiao is made of the mudfrom the local mountain. It takes more than ten steps to make the clay toy, andthe key step is to knead (捏) it with your hands. You can knead the clay toyinto anything, like animals and plants. The blowhole is the most difficult partto make, for the size of the blowhole makes a difference to the sound. Whilecoloring, you can use traditional cultural elements (元素) thatcarry good meanings. It’s hard to make taipingnijiaojiao. But when you finally make it, you will feel proud of yourself.
2022年吉林省中考英语真题（解析版）
“Red Trip” in TonghuaTonghua is a good choice to have a “red trip”. It is aplace full of “red stories”. The well-known national hero Yang Jingyu oncefought here. Experience the “red spirit”!
2022年北京市中考英语真题（解析版）
I joineda band （乐队）as a drummer in my middle school. I thought itwould be fun playing the drum and meeting new friends. At first it was easy,but a month later, it got difficult. I was the only one who couldn’t keep pace （节奏）with the other players. Our teacher,Angie, singled me out to keep practicing while everyone else got to relax. Ifelt ashamed （羞愧的）as my teammates watched me fail so many times.Finally I got so tired of practicing that I didn’t care about doing it right.
2022年北京市中考英语真题（原卷版）
When itcomes to a meaningful life, we might think of love, happiness and health. Alife filled with meaning is what most of us want for ourselves. Then, whatmakes a meaningful life?Manyresearchers agree that a meaningful life comes down to three factors (因素): havinglong-term goals, believing that one’s life matters, and feeling that one’s lifefits together and “makes sense”.But we believe there is more to consider. Sometimeslife enables us to experience small moments of beauty. When people are open toappreciating (欣赏) suchexperiences, these moments may improve how they see their own life. We callthis experiential appreciation (EA).
在全市深化放管服推进一件事一次办改革专题培训班上的讲话
一是工作体系不断完善。去年，市县两级全面完成行政审批服务机构设立工作，市本级以及×个县市区成立了行政审批服务局，乡镇（街道）成立了政务服务中心、村（社区）成立便民服务中心，加之这几年“放管服”改革和“三集中三到位”改革深入，全市政务管理服务的组织领导体系、标准规范体系、平台体系更加完备，基本形成了市级统筹、部门协同、整体联动、线上线下融通的行政审批服务体系。
小学数学说课教学总结
二、说教法 教学方法是教师授课的手段，说教法就应该说“怎么教”以及“为什么这样教”的理论依据，应突出以下几点： 1．说出本节课所要采用的最基本或最主要的教法及其依据。 2．说出所采用的教学方法与学应用的学法之间的联系。 3．说出如何突出重点、分散难点。 例如(片断) 课题：能被3整除的数(人教版九年义务教育六年制小学数学第十册) 说教法：教学力求体现自觉性原则、运用培养自学及目标教学的基本模式，采用自学讲练结合的方法进行。自主性教学原则有利于学生思维能力的培养，可以充 分发挥学生的主观能动性，变被动听为主 自学，学生积极动脑、动口、动手。运用目标教学的基本模式、倡导教师为主导，学生为主体，思维训练和语言表达为主线。 强化学生合作学习、自学思考，充分发挥 学生的天赋和创造才能，保证课堂训练的 密度。本节课使用多媒体教学手段，力求 借助这些手段节约时间，突破难点，提高 效率。
英语外教幼儿班实习教师简历
新课改语文教学项目研讨 / 项目组成员 20xx.01 – 20xx.01项目介绍：负责整体课程规划和大纲，分别以身体各个肌群的锻炼，大脑认知，语言表达为课程目的，设计包括戏剧、生理卫生、小组协助等课程负责18人左右的大班儿童中英双语教学工作，通过每天1个小时的授课时间，教授数字、日期、时间以及天气等基础中文词汇，传播并策划中国文化