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人教版高中政治必修3文化在交流中傳播教案
（一）、生活中的文化傳播◇課堂探究：(1)旅游歸來，介紹異國他鄉(xiāng)的風俗人情、奇聞趣事；闔家團聚，高談闊論各自的所見所聞；獨居一室，打開收音機收聽節(jié)目……這些現(xiàn)象具有哪些共同特點?生活中還有哪些現(xiàn)象屬于文化傳播?(2)你能歸納出文化傳播主要有哪幾種方式嗎?◇探究提示：(1)這些現(xiàn)象都屬于文化傳播，通過這些活動傳遞知識、信息、觀念、情感和信仰等。生活中朋友聚會、參加娛樂活動、在家上網看電視等，都屬于文化傳播。(2)文化傳播主要方式有：商業(yè)活動、人口遷徙、教育、文化娛樂活動等。1．文化傳播的含義文化交流的過程，就是文化傳播的過程。那么何為文化傳播?人們通過一定的方式傳遞知識、信息、觀念、情感和信仰，以及與此相關的所有社會交往活動，都可視為文化傳播。
人教版高中政治必修3在文化生活中選擇教案
◇小辭典：綠色閱讀隨著知識經濟時代的到來，全球化信息浪潮正鋪天蓋地席卷而來。尤其足隨著我國加入世貿組織由夢想變?yōu)楝F(xiàn)實，同國外進行頻繁而廣泛的經濟文化交流，在所難免。在大量文化信息面前，就像物質生活中倡導綠色食品一樣，對于精神食糧，也應該倡導綠色閱讀。綠色閱讀，是一種無污染的有利于人健康文明生活的閱讀。文化就像大自然那種綠色帶給我們永久愉悅一樣，它是高科技競爭中源源不斷地給我們充電的高效營養(yǎng)庫，是一個沙漠中穿行人身心交瘁時望到的一片綠洲，是一個人葆有的、沒有受到任何污染的、永遠都清如許的“半畝方塘”?！笳n堂練習：在我國，必須大力倡導“愛國守法、明禮誠信、團結友善、勤儉自強、敬業(yè)奉獻，的基本道德規(guī)范。這些基本道德規(guī)范()①是我國社會主義文化建設的重要內容②是我國社會主義社會的重要特征③是我國社會主義道德的重要體現(xiàn)④是社會主義經濟建設的唯一精神動力
新人教版高中英語必修2Unit 2 Wildlife Protection-Discovering Useful Structure教案一
The activity topic of this section is "report an ongoing event", and the structure is the passive voice of present continuous tense. Rare wild animals are suffering from large-scale poaching, and species are on the brink of danger. Rescue operations are underway. "Being" and "suffering" are the meanings of the present progressive passive voice.The usage of present progressive passive voice is of great importance in writing a good discourse and appreciating some difficult language items, so it is vital to master it and use it flexibly in a context.1. Motivate Ss to deepen the understanding of the usage of present progressive passive voice in a fixed context.2. Enable Ss to master the usage of present progressive passive voice and use it flexibly in a context.3. Lead Ss to construct sentences or appreciate sentences used master it and use it flexibly in a context.1. Help students to appreciate the function of the usage of present progressive passive voice in a sentence2. Instruct students to write essays using the proper usage of present progressive passive voice.Look at the picture and tell me what are workers doing? What is the house being done?
新人教版高中英語必修2Unit 2 Wildlife Protection-Listening and Speaking教案
This lesson is about wildlife protection. The listening and speaking is about “How to protect endangered wildlife ?” Faced with the facts and numbers of wildlife loss, people begin to detect the reasons, then people such as the celebrities (Prince William and Yao Ming) are calling on to protect them. So students are guided to enhance the awareness of protecting wildlife and try to take part in some volunteer activities of protecting wildlife.1. Predict the content by using visuals. 2. Learn to use the sentences such as “I’m concerned about.... But now they are in danger. I want to know the reasons/why./ What can we do to protect them ?3. Learn from the stars like Prince William and Yao Ming and enhance the awareness of protecting wildlife.4. Guide students to try to put forward the solutions to the problems of wildlife protection and then discuss them with partners and present the results of discussion.5. Master the pronunciation of stressed syllables.1. Learn from the stars like Prince William and Yao Ming and enhance the awareness of protecting wildlife.2. Guide students to try to put forward the solutions to the problems of wildlife protection and then discuss them with partners and present the results of discussion.3. Learn to use the sentences such as “I’m concerned about.... But now they are in danger. I want to know the reasons/why./ What can we do to protect them ?4. Master the pronunciation of stressed syllables.Part A Listening and Speaking--- How to save endangered wildlifeStep 1 Lead in1. Point at the pictures on P14 and ask Q1: What message do these posters share?
新人教版高中英語必修2Unit 2 Wildlife Protection-Reading for Writing教案二
This lesson aims at making a poster about protecting wildlife after reading some posters. During reading students are guided to understand the content and try to summarize the posters with one sentence. Then students are guided to try to make a poster about protecting wildlife.1. Read the two posters and try to understand the summary sentences.2. Look at the two posters and try to understand what emotions they express.3. Try to summarize the features of posters4. Try to make a poster about wildlife.1. Look at the two posters and try to understand what emotions they express.2. Try to summarize the features of posters3. Try to make a poster about wildlife.Step 1 Lead inLook at the the posters on the textbook and ask:Which emotions do the posters communicate ?Step 2 Read the poster and answer the questions.1. What do you think of the animals in the poster on the left ?I think it is frightening and ugly.2. Why do we should protect the ugly animals ?All species--the good, the bad, and the ugly-- should be treated equally.The world needs all kinds--without variety, our planet cannot survive.3. Why are billions of trees being cut down every year ?To make paper for humans.4. What result will be lead to after the trees are cut down ?A lost of animal homes are being destroyed./The habitat of wildlife is being destroyed.Step 3 Find the feature of posters1. What does each poster use to stir up emotions ?On the left, it makes us a little frightened and it looks a little ugly, but it can activate our curiosity--What is it? And What is wrong with it?On the right, it makes us feel a little sad and want to protect them.
新人教版高中英語必修2Unit 2 Wildlife Protection-Discovering Useful Structure教案二
2．表示現(xiàn)階段正在進行的被動動作(該動作在說話的瞬間未必正在進行)。Many interesting experiments are being carried out these days.(說話時，并不一定正在進行)3．表示一種經常性的被動行為，常和always，constantly 等表示頻度的副詞連用，這種用法常常帶有贊揚或厭惡的感情色彩。He is always being praised by the leader.4．表示按計劃或安排主語將要承受謂語動詞所表示的動作(僅限于少數及物動詞)。A party is being held tonight.Step 4 Special cases1.像take care of, look after, talk about, think of等動詞與介詞構成的短語用于現(xiàn)在進行時的被動語態(tài)時, 其中的介詞不可省略。The ways to stop illegally hunting are being talked about. 2．可與部分情態(tài)動詞連用，表示對正在發(fā)生的事情的推測。She may be being punished by her mother.3．有時可表示按計劃或安排將要進行的一個被動動作。A celebration is being held this weekend for his success.4．某些表示“狀態(tài)、心理活動、存在”等的動詞，如have，want，need，love，一般不用現(xiàn)在進行時的被動語態(tài)，而常用一般現(xiàn)在時的被動語態(tài)。With the population increasing，more land is needed.5．“be＋under/in＋n.”可表示現(xiàn)在進行時的被動意義。My computer is under repair.＝My computer is being repaired.
新人教版高中英語必修2Unit 2 Wildlife Protection-Reading and Thinking教案一
The listening and speaking part aims at how to protect and help endangered animals by listening, speaking and talking about the facts and reasons. This lesson analyzes the decreasing clause of Tibetan antelope population and the measures of protecting Tibetan antelopes. So students can be guided to learn to analyse the title and use different reading skills or strategies, like scanning, skimming and careful reading.1. Read quickly to get the main ideas and the purpose of going to Tibetan; read carefully to understand what the author see and think.2. Understand the sentences of the present continuous passive voice such as “Much is being done to protect wildlife.” and the inverted sentence “Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.”3. Enhance the awareness of protecting wildlife.4. Cultivate the reading methods according to different materials.1. Read quickly to get the main ideas and the purpose of going to Tibetan; read carefully to understand what the author see and think.2. Understand the sentences of the present continuous passive voice such as “Much is being done to protect wildlife.” and the inverted sentence “Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.”3. Cultivate the reading methods according to different materials.Step 1 Leading-inWatch a video about elephants and whales and then ask:Why are they endangered ? They are killed/hunted
新人教版高中英語必修2Unit 2 Wildlife Protection-Listening &Speaking＆Talking教案
Listening and Speaking introduces the topic of “how to save endangered wildlife and help wildlife in their neighborhood.” Due to the continuous deterioration of the living environment, a large number of wild animals are always facing the threat of endangered or extinction. Listening and speaking period enables students to understand the fact and reason why wild species are disappearing from the earth at an amazing speed, and realize that human beings ought to enhance the awareness of protecting wild species as soon as possible.Listening and Talking introduces the theme of " how to help wildlife in Ss’ neighborhood.". Now there are many volunteers who spontaneously protect wild animals, carry out various activities according to local conditions, and contribute their own strength to local animal protection with practical actions. Middle school students are also enthusiastic participants. They organize activities in their spare time, and take this opportunity to make friends, broaden their horizons, cultivate team spirit and communication skills. This section describes a bird watching activity organized by several middle school students of Bird watching Club. It aims to stimulate students' interest, improve their understanding of bird watching activities, and use the language structure of “being used for; in order to, so as to, to, so that, in order that ” to express the purpose for communication and discussion.1. Guide students to understand the content of listening texts in terms of using visuals to predict content.2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to save endangered wildlife and help wildlife in their neighborhood.3. Instruct students to use functional sentences of the dialogue such as “I am concerned about…” “what do you know about the endangered animals in…" and so on to talk about one of the endangered animals.
新人教版高中英語必修2Unit 2 Wildlife Protection-Reading and Thinking教案二
The theme of this unit is human and nature, focusing on the theme of wildlife protection. Nature is a complex ecosystem, in which there are delicate balance between animals and plants. Because of the role of the food chain, the extinction of one species will produce influence, causing a series of chain reaction. Large scale extinction of species will have a serious and even irreversible impact on the ecosystem, resulting in immeasurable losses. Therefore, it is of great significance to protect wild species. To protect wild species is to protect human beings themselves. The motto of this unit is "when the buying stops, the killing can too,” which is a public service advertising slogan to protect wildlife. It tells people that every rhinoceros horn, every fur, every bowl of shark fin soup, every Ivory product, and every tiger bone product, etc. consumed by human beings, are innocent wild animals slaughtered behind them. The mission of wild aid is to ban illegal trade in endangered wildlife and mitigate climate change. It aims to educate the public to reduce the consumption demand for endangered wildlife products through public publicity and improve the awareness of environmental protection.1. Improve the awareness of wildlife protection by acquiring the knowledge of wildlife protection.2. Focus on environmental protection and protection of all lives.3. Analysis of the living environment of wild animals with appropriate thinking mode.4. Skillfully use the vocabulary and grammar knowledge of this unit to cultivate self-study ability according to the unit content5. Develop cooperative learning ability through discussion and other ways1. Enable the Ss to talk about the current situation of wild animals.2. Guide the Ss to summarize the main idea of each paragraph as well as the main idea of the text.
新人教版高中英語必修2Unit 2 Wildlife Protection-Reading For Writing教案一
1. 標題首先根據海報的特點、格式寫明標題。海報中往往把內容作為大標題。例如: Save the earth, Save the birds。2. 正文部分不同的海報其正文部分的側重點不同。對于介紹性的海報, 首先要引出話題, 其次列出原因, 最后是總結。對于宣傳類的海報, 要寫明具體內容, 如: 活動內容, 地點以及參加活動的注意事項, 主持或舉辦單位等。1. 圖片: 要選擇引人注目的圖片, 與主題要相關, 色彩明亮。話題句式 1. It is a treasure of our country. 它是我國的國寶。2. Believe it or not, at present only several thousand pandas exist in the world. 信不信由你, 目前世界上僅現(xiàn)存幾千只熊貓。 3.It’s because of human activities that tigers are endangered. 正是因為人類的活動, 老虎處于瀕危的狀態(tài)。4. Many wild animals are in danger of dying out. 很多野生動物面臨著滅絕的危險。 5. The government has taken effective measures to protect them. 政府已采取有效的措施來保護它們。6. People should raise the awareness of the protection of wild animals. 人們應該提高保護野生動物的意識。 7. It’s amazing that there are merely less than 1, 000 finless porpoises living in China. 非常令人吃驚, 目前中國僅有不足1 000只江豚。
人教版高中政治必修3傳統(tǒng)文化的繼承教案
◇探究提示：傳統(tǒng)文化對現(xiàn)實生活是財富還是包袱，要具體問題具體分析，不可一概而論。例如，“忠”是我國古代倫理道德的最高原則，《左傳》中的“臨患不忘國，忠也”，要人們盡自己最大努力，為維護國家利益而獻身，是積極的，對現(xiàn)實生活來說就是財富，應該提倡；而宋代的“君要臣死，臣不得不死”的封建忠君思想對現(xiàn)實生活來說是包袱，應該拋棄。2．繼承傳統(tǒng)文化的正確態(tài)度如何繼承傳統(tǒng)文化，發(fā)揮傳統(tǒng)文化的積極作用呢?正確的態(tài)度是：“取其精華，去其糟粕”，批判繼承，古為今用。面對傳統(tǒng)文化，要辯證地認識它們在現(xiàn)實生活屯的作用，分辨其中的精華和糟粕。對于傳統(tǒng)文化中符合社會發(fā)展要求的、積極向上的內容，應該繼續(xù)保持和發(fā)揚。對于傳統(tǒng)文化中不符合社會發(fā)展要求的、落后的、腐朽的東西，必須“移風易俗”，自覺地加以改造或剔除。
人教版高中政治必修3感受文化影響教案
世界觀、人生觀、價值觀是人們文化素養(yǎng)的核心和標志。一個人的世界觀、人生觀、價值觀是在長期的生活和學習過程中形成的，是各種文化因素交互影響的結果。世界觀、人生觀、價值觀一經形成，就具有確定的方向性，對人的綜合素質和終身發(fā)展產生深遠而持久的影響。◇課堂探究：(1)你能補充一兩個定居海外的華裔在生活方式和習俗方面仍然表現(xiàn)出受我們民族文化影響的事例嗎?(2)能否談談你閱讀這段話時的感悟，并用自己的理解說明文化對人的影響力?◇探究提示：(1)啟發(fā)同學們搜集材料，了解歷史上或現(xiàn)實生活中海外華僑的生活方式受中華民族文化影響的具體事例。(2)通過閱讀這段話，可以感受到，一段豐富的人生經歷、一份令人心動的情感、一種遠大的理想、一種催人奮進的力量，會深深地影響著人的發(fā)展。
人教版高中地理必修3河流的綜合開發(fā)教案
問題：1、對田納西河流域進行開發(fā)能產生哪些方面的效益？2、如果只 提高土地利用程度，是否能保證其他方面的效益不受影響？如果受影響分別說明產生了什么后果？應如何治理？這體現(xiàn)了地理環(huán)境的什么特性。（學生讀課文歸納總結）讀問題研究內容，思 考下列問題1、 阿斯旺大壩位于哪個國家？它的建立為該國農 業(yè)生產提供了哪些有利條件？2、 阿斯旺大壩的建立帶來了哪些經濟效益？又產生了哪些不利影響？3、 我們應如何評價這一工程利與弊？它對我國三峽大壩的建設有什么借鑒意義。同學們，通過本課的學習我們已深切地感受到河流流域的綜合開發(fā)給我們的生活帶來了巨大的改變，但我們更應看到人類的 經濟活動對生態(tài)環(huán)境產生的不利影響，怎樣才能趨利避害，造福人類，這是我們每個人都應思考的問題。
人教版高中語文必修3《琵琶行 并序》教案
9、在樂曲終了之后，詩人以“東船西舫悄無言，唯見江心秋月白”兩句結尾，這兩句作用如何？明確：詩人沒有直接寫聽者的熱烈反響以說明琵琶女技藝非凡和樂聲的感人至深，否則過于直白就不含蓄，不含蓄也就顯不出深沉了。用“東船西舫悄無言”的寂靜無聲，反襯“有聲”的音樂效果，可謂“此時無聲勝有聲”了。人們無聲地沉浸、陶醉在藝術的享受之中，那深深打動人的樂聲仿佛繚繞迂回耳際，不由得使詩人想到了自己浩茫的心事，引起情緒上的波瀾。在這片刻的沉寂中，只見一輪迷蒙的冷月蕩漾在江心的微波之中，它提醒詩人從樂聲中回到現(xiàn)實中來。這句景物描寫點染烘托了濃重的氛圍，與復雜的樂聲融為一體，共同表現(xiàn)了琵琶女與詩人息息相通的復雜情感，是那么的憂憤、哀怨凄楚、蒼涼，給整個音樂形象補足了畫龍點睛之筆。
人教版高中政治必修3傳統(tǒng)文化的繼承教案
思考：在我們今天的生活中，應該如何認識“孝”道？（“孝”為中華民族傳統(tǒng)道德之本。在封建社會，“孝”被異化為封建統(tǒng)治階級統(tǒng)治人民、維系政權的一個最重要的工具；一切聽命于“一家之長”的觀念，使人們往往屈從于獨斷的權威或傳統(tǒng)的家庭禮教，失去了獨立的人格。另一方面，“孝”從它本身意義出發(fā)，所包含的尊老、敬老、養(yǎng)老，以及親親、愛人、愛國，正是中華民族的一大傳統(tǒng)美德，是中華民族家庭和睦、鄰里相親、社會穩(wěn)定的重要內在因素。因此，孝道已被列為中華傳統(tǒng)道德教育的重要內容。）所以我們要辯證地認識傳統(tǒng)文化在現(xiàn)實生活中的作用，做到“取其精華，去其糟粕；批判繼承，古為今用”。對于傳統(tǒng)文化中符合社會發(fā)展要求的、積極的、向上的內容，應該繼續(xù)保持和發(fā)揚。對于傳統(tǒng)文化中不符合社會發(fā)展要求的、落后的、腐朽的東西，必須“移風易俗”，自覺地加以改造或剔除。2、正確對待傳統(tǒng)文化的意義
人教版高中政治必修3建設學習型社會教案
三、第三階段。課后感悟與收獲１、讓學生以“走向學習型社會”為題，將在收集與整理、展示與交流兩個環(huán)節(jié)中獲得的體驗和感悟，以心得體會的形式寫一篇小論文。２、辦一期專欄或黑板報，將優(yōu)秀小論文作集中展示與交流。（進行理論總結，將實踐與理論相結合，讓科學理論更好地指導實踐。充分挖掘學生潛力，增強學生的自信）［評析］新課程理念之一就是政治課不應只局限于課堂上的教與學。把綜合探究課與研究性學習相結合，不失為一種有益的嘗試。傳統(tǒng)的學習方式把學習建立在客觀性、受動性、依賴性的基礎上，把學生看成一個沒有感情的接受容器，這種學習會窒息學生的思維和智力，成為學生發(fā)展的障礙。單元探究活動的開展就是要轉變學生的學習方式，關注學生的學習過程，使得探究過程成為學生發(fā)現(xiàn)問題、提出問題、分析問題、解決問題的過程，培養(yǎng)學生的創(chuàng)新精神和實踐能力。本教案的第一階段充分發(fā)揮了學生的主動性。
人教版高中政治必修3我們的民族精神教案
2.弘揚和培育中華民族精神，是提高全民族綜合素質的必然要求Why：（1）一個民族的發(fā)展也取決于民族的綜合素質（2）民族精神是民族綜合素質的有機組成和集中體現(xiàn)（3）高昂奮進的民族精神能產生巨大的力量，發(fā)揮不可估量的作用學生活動：你能舉出生活中民族素質有待提高的事例嗎？試著分析一下如何解決。舉例：南京的市罵、中國公民在國外的隨地吐痰、亂扔亂丟現(xiàn)象。3.弘揚和培育中華民族精神，是不斷增強我國國際競爭力的要求Why：（1）文化在綜合國力的競爭中的地位和作用越來越突出（2）民族精神作為中華文化的精髓，具有凝聚和動員民族力量、展示民族形象的重要功能，已成為表明綜合國力強弱的至關重要的因素之一學生活動：“憶一憶”文化在綜合國力競爭中具有怎樣的意義？（P11、P22，關鍵詞：精神武器、深深熔鑄、重要標志、智力支持、方向保證、精神動力）
新人教版高中英語必修3Unit 1 Festivals and Celebrations教學設計三
*wide range of origins(= a great number of different origins, many kinds of origins)*It featured a parade and a great feast with music, dancing, and sports. (=A parade and a great feast with music, dancing, and sports were included as important parts of the Egyptian harvest festival.)*.. some traditions may fade away and others may be established.(= Some traditions may disappear gradually, while other new traditions may come into being.）Step 6 Practice(1) Listen and follow the tape.The teacher may remind the students to pay attention to the meaning and usage of the black words in the context, so as to prepare for the completion of the blanks in activity 5 and vocabulary exercises in the exercise book.(2) Students complete the text of activity 5 by themselves.The teacher needs to remind the students to fill in the blanks with the correct form of the vocabulary they have learned in the text.Students exchange their answers with their partners, and then teachers and students check their answers.(3)Finish the Ex in Activity 5 of students’ book.Step 7 Homework1. Read the text again, in-depth understanding of the text;2. Discuss the origin of festivals, the historical changes of related customs, the influence of commercial society on festivals and the connotation and essential meaning of festivals.3. Complete relevant exercises in the guide plan.1、通過本節(jié)內容學習，學生是否理解和掌握閱讀文本中的新詞匯的意義與用法；2、通過本節(jié)內容學習，學生能否結合文本特點快速而準確地找到主題句；3、通過本節(jié)內容學習，學生能否理清論說文的語篇結構和文本邏輯，了解節(jié)日風俗發(fā)展與變遷，感悟節(jié)日的內涵與意義。
人教版高中地理必修3產業(yè)轉移教案
1．國家石油價格上漲，導致依賴于國際石油而建立起來的日本重化工業(yè)的制造成本提高，產品價格相應提高，削弱了日本重化工產品在國際市場上的競爭力。2．日元 的大幅度升值，意味著日本產品在國際市場上的價格大幅度提高。例如，同樣的日本產品，如果原來在國際市場上賣1美元，日元升值1倍后其在國際市場上的售價就達2美元。所以，以國際市場為依托的日本傳統(tǒng)產業(yè)只好紛紛向海外轉移。3．自身市場滿足不了發(fā)展需求，國際市場上亞洲發(fā)展中國家和地區(qū)的同類產品具有明顯的價格優(yōu)勢。所以，日本企業(yè)在其國內發(fā)展的空間很小。4．勞動力價格高反映為產品的價格高，而勞動力數量又滿足 不了企業(yè)進一步擴展對勞動力的需求。所以，日本從事傳統(tǒng)產業(yè)的國內企業(yè)生產受勞動力價格和數量的雙重制約。5．促進日本企業(yè)生產的區(qū)位選擇向國土的南、北部和海外擴展。6．“技術立國”的政策明顯對傳統(tǒng)產業(yè)在國內生產不利，即企業(yè)生產要么向知識技術密集型轉換（這需要大量的投資），要么轉向海外。
人教版高中地理必修3區(qū)域農業(yè)發(fā)展教案
1．歸納珠江三角洲發(fā)展基塘生產有利的地理條件。珠江三角洲地勢低平，河網密布，降水充沛。北回歸線從珠江三角洲的北部穿過。珠江三角洲地區(qū)發(fā)展基塘農業(yè)生產有利條件可以結合材料，歸納為三個方面：地形、氣候、市場（當地和海外）。2．基塘生產將哪些產業(yè)聯(lián)系起來?哪些副產品(或廢棄物)被充分利用起來?這種聯(lián)系對農村經濟發(fā)展有什么作用?基塘生產環(huán)節(jié)將種植業(yè)（桑、蔗等）、養(yǎng)殖業(yè)（養(yǎng)蠶、養(yǎng)魚）、工業(yè)（絲廠、糖廠）等幾種產業(yè)緊密的聯(lián)系在一起。在此環(huán)節(jié)中，塘泥、蠶沙（蠶屎）、蠶蛹、繅絲、濾泥、蔗葉等副產品被充分的回收利用。養(yǎng)蠶業(yè)、蔗糖加工業(yè)同塘魚養(yǎng)殖業(yè)緊密結合，作為一種綜合的經營，幾者之間相互依存、相互促進、揚長補短，有機地循環(huán)聯(lián)系起來。基本上解決了桑、蔗的肥料和蠶、魚的飼料問題。不僅養(yǎng)蠶、蔗糖加工和養(yǎng)魚生產穩(wěn)定，而且成本也大大降低。
