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高中學(xué)生會(huì)主席國(guó)旗下講話(huà)
為大家收集整理了《高中學(xué)生會(huì)主席國(guó)旗下講話(huà)范文》供大家參考，希望對(duì)大家有所幫助?。?！敬愛(ài)的老師們，親愛(ài)的同學(xué)們：大家早上好！我是鄖陽(yáng)中學(xué)新一屆學(xué)生會(huì)主席，來(lái)自高二班的張彥陽(yáng)。首先，我代表新一屆學(xué)生會(huì)向給予我們關(guān)懷和信任的老師們表示衷心的感謝，向給予我們支持和幫助的全體同學(xué)表示深深的謝意，向給予我們鼓勵(lì)、寄予我們厚望的上一屆學(xué)生會(huì)全體成員表示崇高的敬意，謝謝你們！今天，我懷著十分激動(dòng)的心情進(jìn)行國(guó)旗下演講。作為新一屆學(xué)生會(huì)主席，我深知自己身上的擔(dān)子不輕，權(quán)力越大，責(zé)任越大，但是有如此優(yōu)秀精英們組成的團(tuán)隊(duì)，讓我對(duì)未來(lái)的工作滿(mǎn)懷信心。我將會(huì)以百分之兩百的工作熱情去擔(dān)當(dāng)起這份重任，克服困難，迎接挑戰(zhàn)，努力實(shí)現(xiàn)我競(jìng)選中所設(shè)想的那樣：將這一屆學(xué)生會(huì)打造成最為輝煌的一屆，名留校史！
高中“向國(guó)旗敬禮”國(guó)旗下講話(huà)稿
老師、同學(xué)們：大家好早上好！我是來(lái)自高三（7）的盧XX，兩年前，因新生軍訓(xùn)的優(yōu)秀表現(xiàn)，我有幸成為一名學(xué)校升旗隊(duì)的護(hù)旗手。今天很高興能代表學(xué)校升旗隊(duì)的所有成員在此發(fā)言，我國(guó)旗下講話(huà)的題目是“向國(guó)旗敬禮”。同學(xué)們不知是否知道或是記得，XX年6月18日，由20國(guó)領(lǐng)導(dǎo)人參加的G20峰會(huì)在墨西哥洛斯卡沃斯開(kāi)幕。在各國(guó)領(lǐng)導(dǎo)人合影時(shí)，主辦方用國(guó)旗貼紙放在地上表示各國(guó)領(lǐng)導(dǎo)人站的位置。合影完畢，領(lǐng)導(dǎo)人散去，腳下的國(guó)旗被踩來(lái)踩去，無(wú)人理會(huì)。而中國(guó)國(guó)家主席胡錦濤彎腰撿起中國(guó)國(guó)旗貼紙，細(xì)心地收了起來(lái)。這一舉動(dòng)，讓在場(chǎng)的世界各大媒體競(jìng)相報(bào)道，被世人傳頌，各國(guó)人感動(dòng)并深受教育。胡錦濤主席對(duì)國(guó)旗的尊重和愛(ài)護(hù)，充分體現(xiàn)了他深厚的愛(ài)國(guó)情懷，說(shuō)明他作為國(guó)家主席，心中時(shí)刻裝著國(guó)家和人民，始終把國(guó)家的尊嚴(yán)，人民的利益放在崇高的位置，不容輕視、不容踐踏、不容侵害。五星紅旗作為中華人民共和國(guó)國(guó)旗，是中華人民共和國(guó)的標(biāo)志和象征。一個(gè)人對(duì)待國(guó)旗的態(tài)度，真實(shí)的體現(xiàn)了他對(duì)國(guó)家的情感，尊重和愛(ài)護(hù)國(guó)旗，是公民愛(ài)國(guó)情感的自然流露，更是法律賦予每個(gè)公民的職責(zé)?！皭?ài)國(guó)是文明人的首要美德”。“做人最大的事情是什么呢？就是看他是否知道怎樣愛(ài)國(guó)”。
高中開(kāi)學(xué)典禮國(guó)旗下講話(huà)稿
親愛(ài)的老師們、同學(xué)們，大家好。我是XX屆的洪超。今天很高興可以重返校園，和大家分享一下自己高中階段的心得。我代表所有XX屆學(xué)生向通河中學(xué)勤勤懇懇為我們奉獻(xiàn)的各科老師、向高瞻遠(yuǎn)矚的校領(lǐng)導(dǎo)還有為我們服務(wù)的校務(wù)人員表達(dá)深深的感激。三年前，接到通河中學(xué)的錄取通知書(shū)的時(shí)候，我曾經(jīng)為沒(méi)有進(jìn)入一所重點(diǎn)中學(xué)感到十分失落。但是，在通河中學(xué)的三年，我感受到這座年輕的學(xué)校蓬勃的生機(jī)，也逐漸轉(zhuǎn)變?cè)鹊目捶āＮ視r(shí)常想，倘若我校有那些重點(diǎn)中學(xué)一樣悠久的歷史，我們絕對(duì)不會(huì)比它們差。就像，在通河的最后一年，我校獲得了區(qū)重點(diǎn)的稱(chēng)號(hào)。一個(gè)又一個(gè)榮譽(yù)，讓我深刻體會(huì)了往屆學(xué)長(zhǎng)掛在嘴邊的那句：今天我為通河自豪，明天通河為我自豪。高中，是通向大學(xué)的最后一處碉堡，也預(yù)示相當(dāng)難熬的一場(chǎng)持久戰(zhàn)。一言以蔽之，這個(gè)時(shí)段需要我們廣泛參與學(xué)校的活動(dòng)鍛煉自己的能力，也需要在考場(chǎng)拼成績(jī)、拼心態(tài)、拼體力。
高一語(yǔ)文銜接課教案
一、心態(tài)調(diào)整?！ ∈紫?，熟知盲點(diǎn)。即了解初高中語(yǔ)文課標(biāo)的要求差異及變化，做到心中有數(shù)，明確銜接過(guò)渡的著力點(diǎn)。初、高中語(yǔ)文，考查的重點(diǎn)基本上聚焦在文言文閱讀、現(xiàn)代文閱讀、詩(shī)歌鑒賞、語(yǔ)言運(yùn)用和作文這五個(gè)方面。與初中語(yǔ)文相比，高中語(yǔ)文學(xué)習(xí)的難度明顯在增加了。其具體變化情況簡(jiǎn)要?dú)w類(lèi)如下： ?、僬Z(yǔ)法修辭進(jìn)考查要求。初中對(duì)語(yǔ)法、修辭、文言文詞法、句法等知識(shí)，側(cè)重于了解，教學(xué)中淡化且不作為考查內(nèi)容;而在高中則重在運(yùn)用，對(duì)語(yǔ)言知識(shí)的要求較高，教學(xué)中強(qiáng)化且作為重要的考查內(nèi)容?！ 、谠?shī)歌閱讀增加了難度。從初中的了解到高中的學(xué)習(xí)，從初中的重在考查積累，到高中強(qiáng)化理解分析，體現(xiàn)了初高中詩(shī)歌學(xué)習(xí)的變化。
新人教版高中英語(yǔ)選修2Unit 2 Learning about Language教學(xué)設(shè)計(jì)
The activity theme of this section is to design various activities around the key words in the first text. Therefore, the activities require students to pay attention to the spelling of words. On the other hand, let students grasp the meaning of words more accurately through sentences and short texts. This kind of teaching design also helps to improve the ability of using English thinking.1. Cultivating students' ability to use word formation to induce and memorize vocabulary, and the ability to use lexical chunks to express meaning.2. Guide the students to think independently and use the correct form of words to complete sentences3. Cultivate students' habit of using lexical chunks to express language completely, guide students to draw words in sentences quickly, pay attention to word collocation, so as to accumulate more authentic expressions4. Instruct students to create sentences with the chunks.1. Enable students to use the language points in the real situation or specific contexts flexibly and appropriately.2. Guiding the Ss to use unit topic words and the sentence patterns in a richer context.Step1: Think of a word that best fits each definition.1. to remember sth2.to accept, admit, or recognize sth or the truth/existence of sth3. the process of changing sth or yourself to suit a new situation4 .to make sb feel less worried or unhappy5. a strong desire to achieve sth
新人教版高中英語(yǔ)選修2Unit 2 Reading and thinking教學(xué)設(shè)計(jì)
Her tutor told her to acknowledge __________ other people had said if she cited their ideas, and advised her _______（read） lots of information in order to form __________wise opinion of her own.Now halfway __________ her exchange year, Xie Lei felt much more at home in the UK. She said __________ (engage) in British culture had helped and that she had been__________ (involve) in social activities. She also said while learning about business, she was acting as a cultural messenger __________（build） a bridge between the two countries. keys:Xie Lei, a 19yearold Chinese student, said goodbye to her family and friends in China and boarded (board) a plane for London six months ago in order to get a business qualification. She was ambitious(ambition) to set up a business after graduation. It was the first time that she had left (leave) home.At first, Xie Lei had to adapt to life in a different country. She chose to live with a host family, who can help with her adaptation (adapt) to the new culture. When she missed home, she felt comforted (comfort) to have a second family. Also Xie Lei had to satisfy academic requirements. Her tutor told her to acknowledge what other people had said if she cited their ideas, and advised her to read lots of information in order to form a wise opinion of her own.Now halfway through her exchange year, Xie Lei felt much more at home in the UK. She said engaging (engage) in British culture had helped and that she had been involved (involve) in social activities. She also said while learning about business, she was acting as a cultural messenger building a bridge between the two countries.
新人教版高中英語(yǔ)選修2Unit 2 Using langauge-Listening教學(xué)設(shè)計(jì)
? B: Absolutely! Getting involved with Chinese cultural activities there definitely helped a lot. I got to practice my Chinese on a daily basis, and I could learn how native Chinese speakers spoke.? A: What do you feel is your biggest achievement?? B: Learning Chinese characters! I have learnt about 1,500 so far. When I first started, I didn't think it was even going to be possible to learn so many, but now I find that I can read signs, menus, and even some easy newspaper articles.? A: What are you most keen on?? B: I've really become keen on learning more about the Chinese culture, in particular Chinese calligraphy. As I have learnt Chinese characters, I have developed a great appreciation for their meaning. I want to explore Chinese characters by learning how to write them in a more beautiful way. ? A: Finally, what do you want to say to anyone interested in learning Chinese?? I have really become keen on learning more about the Chinese culture, in particular Chinese Calligraphy. As I have learnt Chinese character, I have developed a great appreciation for their meaning. I want to explore Chinese characters by learning how to write them in a more beautiful way.? A: Finally, what do you want to say to anyone interested in learning Chinese?? B: I'd say, give it a shot! While some aspects may be difficult, it is quite rewarding and you will be happy that you tried.? A: Thanks for your time. ? B:You're welcome.
新人教版高中英語(yǔ)選修2Unit 4 Reading and thinking教學(xué)設(shè)計(jì)
【詞匯精講】highlight n.最好或最精彩的部分 vt.突出;強(qiáng)調(diào);使醒目One of the highlights of the trip was seeing the Taj Mahal.這次旅行的亮點(diǎn)之一是參觀泰姬陵。Your resume should highlight your skills and achievements.你的簡(jiǎn)歷應(yīng)該突出你的技能和成就。The report highlights the major problems facing society today.報(bào)告強(qiáng)調(diào)了當(dāng)今社會(huì)所面臨的主要問(wèn)題。I’ve highlighted the important passages in yellow.我用黃色標(biāo)出了重要段落。7.Edmonton is freezing cold in winter,with daily temperatures averaging -10 ℃.埃德蒙頓冬季寒冷,日平均氣溫為-10°C。【詞匯精講】freezing adj.極冷的;冰凍的Leave a basin of water outside in freezing weather.在冰凍的天氣里,放一盆水在室外。It’s freezing cold outside so wear a warm coat.外面超冷的,所以穿一個(gè)暖和一點(diǎn)的外套吧。8.It was not until 9:30 a.m.that they finally reached the capital of Ontario,Toronto.直到上午9時(shí)30分,他們才終于到達(dá)多倫多的首府安大略省?！揪涫狡饰觥勘揪涫且粋€(gè)強(qiáng)調(diào)句,強(qiáng)調(diào)的是句子的時(shí)間狀語(yǔ)until 9:30。含有not...until...的句子的強(qiáng)調(diào)句為It is not until...that...,that后面的句子要用肯定形式。It was not until then that I suddenly realized nobody was happier than I was.直到那時(shí)我才突然意識(shí)到?jīng)]有人比我更幸福了。
新人教版高中英語(yǔ)選修2Unit 3 Learning about Language教學(xué)設(shè)計(jì)
1. We'll need ten months at least to have the restaurant decorated.2.Some traditional Chinese dishes from before the Ming Dynasty are still popular today.3.My grandpa's breakfast mainly includes whole grain biscuits and a glass of milk.4.People in this area would eat nearly a kilo of cheese per week.5. We enjoyed a special dinner in a fancy restaurant where the waiters all wore attractive suits.6. He prefers this brand of coffee which, as he said, has an unusually good flavor.Key:1. at a minimum 2. prior to3. consist of4. consume5. elegant6. exceptionalStep 5：Familiarize yourself with some food idioms by matching the meaning on the right with the colored words on the left.1.Public concern for the health of farm animals has mushroomed in the UK2.Anderson may be young but he's certainly rolling to doing dough!3.George is a popular lecturer. He often peppers his speech with jokes.4.As the person to bring home the bacon, he needs to find a stable job.5 He is often regarded as a ham actor for his over emphasized facial expressions. The media reported that these companies had treated pollution as a hot potato. 6.The media reported that these companies had treated pollution as a hot potato.7.Don't worry about the test tomorrow. It's going to be a piece of cake!8. It's best to fold the swimming ring when it is as flat as a pancake.A. completely flatB. something that is very easy to do C.an issue that is hard to deal withD.to include large numbers of somethingE.to earn on e's living to support a familyF. wealthyG.to rapidly increase in numberH. an actor who performs badly, especially by over emphasizing emotions
新人教版高中英語(yǔ)選修2Unit 3 Using langauge-Listening教學(xué)設(shè)計(jì)
1． How is Hunan cuisine somewhat different from Sichuan cuisine?The heat in Sichuan cuisine comes from chilies and Sichuan peppercorns. Human cuisine is often hotter and the heat comes from just chilies.2.What are the reasons why Hunan people like spicy food?Because they are a bold people. But many Chinese people think that hot food helps them overcome the effects of rainy or wet weather.3.Why do so many people love steamed fish head covered with chilies?People love it because the meat is quite tender and there are very few small bones.4.Why does Tingting recommend bridge tofu instead of dry pot duck with golden buns?Because bridge tofu has a lighter taste.5 .Why is red braised pork the most famous dish?Because Chairman Mao was from Hunan, and this was his favorite food.Step 5: Instruct students to make a short presentation to the class about your choice. Use the example and useful phrases below to help them.? In groups of three, discuss what types of restaurant you would like to take a foreign visitor to, and why. Then take turns role-playing taking your foreign guest to the restaurant you have chosen. One of you should act as the foreign guest, one as the Chinese host, and one as the waiter or waitress. You may start like this:? EXAMPLE? A: I really love spicy food, so what dish would you recommend?? B: I suggest Mapo tofu.? A: Really ? what's that?
新人教版高中英語(yǔ)選修2Unit 4 Learning about Language教學(xué)設(shè)計(jì)
This section guides students to pay attention to the typical context of vocabulary use, helps students accumulate vocabulary around the key vocabulary of this unit, and uses the learned words and word chunks in different contexts to deeply understand their meaning and usage, so as to achieve the purpose of review and consolidation.The teaching design activities aim to guide students to pay attention to the typical context in which the target vocabulary is used, as well as the common vocabulary used in collocation, so that students can complete the sentence with correct words. In terms of vocabulary learning strategies, this unit focuses on cultivating students' ability to pay attention to collocation of words and to use word blocks to express meaning.For vocabulary learning, it is not enough just to know the meaning of a single word, but the most important thing is to master the common collocations of words, namely word blocks.Teachers should timely guide students to summarize common vocabulary collocation, such as verb and noun collocation, verb and preposition collocation, preposition and noun collocation, and so on.1. Guide students to understand and consolidate the meaning and usage of the vocabulary in the context, 2. Guide the students to use the unit topic vocabulary in a richer context3. Let the students sort out and accumulate the accumulated vocabulary, establishes the semantic connection between the vocabulary,4. Enable students to understand and master the vocabulary more effectivelyGuiding the Ss to use unit topic words and the sentence patterns in a richer context.
新人教版高中英語(yǔ)選修2Unit 4 Using langauge-Listening教學(xué)設(shè)計(jì)
The theme of the listening section is " talking about scenery and culture along a journey."The part is designed to further lead the students to understand Canadian natural geography and social environment, and integrated into the cultural contrast by mentioning the long train journey from Beijing to Moscow routes. On this basis, the part activates students related travel experience, lets the student serial dialogue, guides the student to explore further the pleasure and meaning of the long journey, and Chinese and foreign cultural comparison.The part also provides a framework for the continuation of the dialogue, which is designed to provide a framework for students to successfully complete their oral expressions, and to incorporate an important trading strategy to end the dialogue naturally.1. Help students to understand and master some common English idioms in the context, and experience the expression effect of English idioms.2. Guide the students to understand the identity of different people in the listening context, and finish the dialogue according to their own experience.3. Instruct the students to use appropriate language to express surprise and curiosity about space and place in the dialogue, and master the oral strategy of ending the dialogue naturally.1. Instruct students to grasp the key information and important details of the dialogue.2. Instruct students to conduct a similar talk on the relevant topic.
新人教版高中英語(yǔ)選修2Unit 5 Learning about Language教學(xué)設(shè)計(jì)
The purpose of this section of vocabulary exercises is to consolidate the key words in the first part of the reading text, let the students write the words according to the English definition, and focus on the detection of the meaning and spelling of the new words. The teaching design includes use English definition to explain words, which is conducive to improving students' interest in vocabulary learning, cultivating their sense of English language and thinking in English, and making students willing to use this method to better grasp the meaning of words, expand their vocabulary, and improve their ability of vocabulary application. Besides, the design offers more context including sentences and short passage for students to practice words flexibly.1. Guide students to understand and consolidate the meaning and usage of the vocabulary in the context, 2. Guide the students to use the unit topic vocabulary in a richer context3. Let the students sort out and accumulate the accumulated vocabulary, establishes the semantic connection between the vocabulary,4. Enable students to understand and master the vocabulary more effectivelyGuiding the Ss to use unit topic words and the sentence patterns in a richer context.Step1: Read the passage about chemical burns and fill in the blanks with the correct forms of the words in the box.
新人教版高中英語(yǔ)選修2Unit 5 Reading and thinking教學(xué)設(shè)計(jì)
The theme of this activity is to learn the first aid knowledge of burns. Burns is common in life, but there are some misunderstandings in manual treatment. This activity provides students with correct first aid methods, so as not to take them for granted in an emergency. This section guides students to analyze the causes of scald and help students avoid such things. From the perspective of text structure and collaborative features, the text is expository. Expository, with explanation as the main way of expression, transmits knowledge and information to readers by analyzing concepts and elaborating examples. This text arranges the information in logical order, clearly presents three parts of the content through the subtitle, accurately describes the causes, types, characteristics and first aid measures of burns, and some paragraphs use topic sentences to summarize the main idea, and the level is very clear.1. Guide students to understand the causes, types, characteristics and first aid methods of burns, through reading2. Enhance students’ ability to deal withburnss and their awareness of burns prevention3. Enable students to improve the ability to judge the types of texts accurately and to master the characteristics and writing techniques of expository texts.Guide students to understand the causes, types, characteristics and first aid methods of burns, through readingStep1: Lead in by discussing the related topic:1. What first-aid techniques do you know of ?CPR; mouth to mouth artificial respiration; the Heimlich Manoeuvre
新人教版高中英語(yǔ)選修2Unit 5 Using langauge-Listening教學(xué)設(shè)計(jì)
The theme of this section is to learn how to make emergency calls. Students should learn how to make emergency calls not only in China, but also in foreign countries in English, so that they can be prepared for future situations outside the home.The emergency telephone number is a vital hotline, which should be the most clear, rapid and effective communication with the acute operator.This section helps students to understand the emergency calls in some countries and the precautions for making emergency calls. Through the study of this section, students can accumulate common expressions and sentence patterns in this context. 1.Help students accumulate emergency telephone numbers in different countries and learn more about first aid2.Guide the students to understand the contents and instructions of the telephone, grasp the characteristics of the emergency telephone and the requirements of the emergency telephone.3.Guide students to understand the first aid instructions of the operators.4.Enable Ss to make simulated emergency calls with their partners in the language they have learned1. Instruct students to grasp the key information and important details of the dialogue.2. Instruct students to conduct a similar talk on the relevant topic.Step1:Look and discuss:Match the pictures below to the medical emergencies, and then discuss the questions in groups.
人教版高中地理選修2中、低產(chǎn)田的綜合治理教案
一、低濕地的治理與開(kāi)發(fā)1、 低濕地治理開(kāi)發(fā)的原因——辛店洼自然條件的主要特點(diǎn)（1）地勢(shì)低平：辛店洼洼底海拔17．5米，洼緣海拔19．5米，是全市最低點(diǎn)。（2）漬澇嚴(yán)重：其成因如表6-4所示（3）土質(zhì)好、水源足、水質(zhì)好：成土母質(zhì)為黃河沖積物，土壤質(zhì)地好；水資源豐富，水質(zhì)較好。2、低洼地治理開(kāi)發(fā)的方法：魚(yú)塘——臺(tái)田模式（或稱(chēng)塘田模式）以往辛店洼曾采用挖溝排水的措施治理低洼地，但治理效果不明顯，因?yàn)樾恋晖莸闹饕苁堑貏?shì)低洼，地下水位高，挖溝排水因地勢(shì)低，排水困難，地下水位難以下降，故治理效果不明顯。20世紀(jì)80年代以來(lái)，科學(xué)工作者在辛店洼地區(qū)開(kāi)始了整治低濕地的研究，他們遵循“因洼制宜”的指導(dǎo)思想，逐步摸索出了低濕地的治理模式：魚(yú)塘—--臺(tái)田模式
人教版高中地理選修2百萬(wàn)移民及其安置教案
三峽庫(kù)區(qū)農(nóng)村移民安置根本出路是通過(guò)發(fā)展大農(nóng)業(yè)來(lái)解決耕地不足，不應(yīng)盲目開(kāi)墾荒坡地，防止產(chǎn)生新的水土流失，盡量避免生態(tài)環(huán)境惡化。2、就地后靠，就近安置模式三峽庫(kù)區(qū)淹沒(méi)區(qū)線(xiàn)狀分布的受淹特點(diǎn)有別于一般水庫(kù)淹沒(méi)區(qū)的片狀分布，使得庫(kù)區(qū)移民具有相對(duì)分散的特點(diǎn)，且淹沒(méi)涉及的356個(gè)鄉(xiāng)鎮(zhèn)沒(méi)有一個(gè)被全淹，甚至全淹的村也很少，這有利于移民在本縣甚至本鄉(xiāng)就近后靠安置，避免了水庫(kù)移民大量外遷、遠(yuǎn)遷所造成的種種困難和后遺癥。三峽移民搬遷大多可以就地后靠，就近安置，這是三峽移民的一大特色。就近后靠安置的優(yōu)點(diǎn)是不離本鄉(xiāng)本土，移民容易接受，且避免了移民大量外遷、遠(yuǎn)遷所造成的困難和后遺癥；缺點(diǎn)是容易對(duì)當(dāng)?shù)氐纳鷳B(tài)環(huán)境造成過(guò)大的壓力，如過(guò)度開(kāi)墾坡地、破壞植被、加劇水土流失等。3、工程周期長(zhǎng)，可從容安置移民三峽工程建設(shè)周期長(zhǎng)（1994年～2009年，共17年），使得移民安置能夠及早進(jìn)行，可以從容安置移民的生產(chǎn)和生活。
人教版高中地理選修2荒漠化的成因與防治教案
1、圖4.10“西北地區(qū)土地荒漠化的人為因素（以風(fēng)力作用為例）圖”產(chǎn)生荒漠化的人為因素有過(guò)度農(nóng)墾、過(guò)度放牧、過(guò)度樵采和不合理利用水資源等。從荒漠化和人類(lèi)的關(guān)系來(lái)看，荒漠化的發(fā)生、發(fā)展和社會(huì)經(jīng)濟(jì)有著密切的聯(lián)系，人類(lèi)不合理的經(jīng)濟(jì)活動(dòng)不僅是荒漠化發(fā)生的主要原因和活躍因素，同時(shí)人類(lèi)又是它的直接受害者。2、圖4.14“荒漠植物的生態(tài)適應(yīng)圖”荒漠植物的生態(tài)適應(yīng)特征表現(xiàn)在：a類(lèi)為肉質(zhì)植物，體內(nèi)薄壁組織可儲(chǔ)存大量水分，其近地表分布的根系可以在偶然而短暫的降水過(guò)程（如暴雨）中收集水分；b類(lèi)植物一方面利用其近地表根系吸收可能的降水，另一方面根系向縱深發(fā)展，以利用穩(wěn)定的地下水；c類(lèi)為微葉或無(wú)葉型植物，葉片強(qiáng)烈縮小或退化，由綠色葉莖行使光合作用功能，蒸騰很弱?！窘虒W(xué)內(nèi)容】一、荒漠化的成因1．荒漠化的自然原因荒漠化的自然原因包括干旱（基本條件）、地表物質(zhì)松散（物質(zhì)基礎(chǔ)）和大風(fēng)吹揚(yáng)（動(dòng)力因素）。
人教版高中地理選修2我國(guó)的三大自然區(qū)教案
1、中國(guó)三大自然區(qū)的空間位置和基本特征。2、中國(guó)自然區(qū)域差異對(duì)人類(lèi)活動(dòng)的影響。◆重要圖釋圖1.1“三大自然區(qū)圖”三大自然區(qū)的界線(xiàn)（自然地理分界）：西北干旱半干旱區(qū)與東部季風(fēng)區(qū)之間大致以400mm等年降水量線(xiàn)為界，青藏高寒區(qū)與東部季風(fēng)區(qū)約以3000米等高線(xiàn)為界，青藏高寒區(qū)與西北干旱半干旱區(qū)以昆侖山——阿爾金山——祁連山為界?！緦W(xué)習(xí)策略】1、讀圖分析：通過(guò)讀圖、分析、歸納的方法，識(shí)記三大自然區(qū)的空間位置、相互界線(xiàn)，理解各自然地理要素的特征和空間分布規(guī)律。2、綜合訓(xùn)練：運(yùn)用空白地圖，將地理事物落實(shí)在圖上，并進(jìn)行比較分析、歸納整理，理解三大自然區(qū)的區(qū)域差異?！窘虒W(xué)內(nèi)容】一、三大自然區(qū)的劃分1．三大自然區(qū)的劃分依據(jù)（地貌、氣候的地域差異）
人教版高中地理選修2水土流失的治理教案
2、關(guān)于黃土高原小流域及其治理的敘述，正確的是()A.小流域不能看作是一個(gè)完整的地域單元B.小流域可以相當(dāng)于黃土高原上一條河流的整個(gè)流域C.小流域綜合治理的方針是“保塬、護(hù)坡、固溝“D.小流域的綜合治理只能采用農(nóng)業(yè)技術(shù)措施3、黃土高原植被遭到破壞的原因有()①營(yíng)造宮殿，毀林開(kāi)荒②修筑梯田，開(kāi)石動(dòng)土③開(kāi)荒棄荒，輪荒作業(yè)④開(kāi)露天礦，建隔離護(hù)壩⑤保塬護(hù)坡，打壩建庫(kù)⑥開(kāi)挖原生地面，復(fù)墾采空礦區(qū)A.①②④B.①③⑤C.①③D.②④4、下列關(guān)于黃土高原的敘述，正確的是()A.水土流失不可治理B.人為因素是黃土高原現(xiàn)代水土流失的主導(dǎo)因素C.植樹(shù)種草是做好水土保持的基本前提D.開(kāi)礦會(huì)加劇水土流失，故應(yīng)少開(kāi)礦5、引起黃土高原水土流失最直接的因素是()A.降水集中于夏季且多暴雨B.黃土垂直節(jié)理發(fā)育C.地表崎嶇不平，千溝萬(wàn)壑D.不合理開(kāi)發(fā)造成地表黃土裸露，失去植被保護(hù)6、治理黃土高原水土流失的工程措施有()A.植樹(shù)造林B.平整土地C.修建水庫(kù)D.深耕改土