(2).教學手段為了使我根據(jù)教材而設(shè)計的三個教學目標以及重點難點得以的突出和突破,達到最大化的展示境界,同時也為了配合以上我選擇的四種教法得以完滿實現(xiàn),我決定采用“多媒體”教學手段進行全程教學。利用電腦的信息容量大,操作簡便等優(yōu)點,形象生動的直觀展示教學內(nèi)容,不但提高學習效率和質(zhì)量,而且容易激發(fā)學生的學習興趣和調(diào)動學習的積極性。四、說學法我為學生設(shè)計了三個學習方法:1.讓學生學會在探究中學。通過“對黑人嚴酷處境的探究”和對文中重點語句的探究,培養(yǎng)學生在探究中學習的能力。2.讓學生學會在讀中學。通過“誦讀法”指導學生在誦讀過程中感受演講詞內(nèi)在的魅力,學會在讀中學。3.讓學生學會在練習中學。通過“課外延伸練習法”,對所學的知識進行運用,培養(yǎng)學生的創(chuàng)新和自學能力。
教材分析改革開放后我國的綜合國力不斷增強,人民對祖國統(tǒng)一的愿望越來越迫切。本節(jié)課以“一國兩制”構(gòu)想的提出,香港、澳門的回歸和海峽兩岸關(guān)系的發(fā)展為中心,說明實現(xiàn)祖國統(tǒng)一,完成中華民族復興是歷史發(fā)展的必然。第一目“‘一國兩制’構(gòu)想的提出”主要講述了“一國兩制”的含義及歷史意義。第二目“香港、澳門的回歸”著重講述了香港回歸、澳門回歸的經(jīng)過及歷史意義,這是“一國兩制”成功的實踐。第三目“海峽兩岸關(guān)系的發(fā)展”講述了大陸注重發(fā)展與臺灣的關(guān)系,促進海峽兩岸的經(jīng)濟文化交流與合作,打破了幾十年來海峽兩岸的隔絕狀態(tài),促進了祖國統(tǒng)一的進程。此外,教材還通過“資料回放”“歷史縱橫”“學思之窗”等欄目,為學生學習提供了一些詳細的史料。在教學中要分析圖表資料,引導學生理解完成祖國統(tǒng)一大業(yè),實現(xiàn)中華民族的復興,是任何人也阻擋不了的歷史潮流。
This teaching period mainly deals with grammar “restrictive relative clauses.” To begin with, teachers should lead students to revise what they have learned about the relative pronouns and relative adverbs. And then, teachers move on to stress more special cases concerning this grammar, such as the “preposition+ relative pronouns which and whom” and cases where we can omit the relative pronouns. This period carries considerable significance to the cultivation of students’ writing competence and lays a solid foundation for the basic appreciation of language beauty. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercises. 1. Guide students to review the basic usages of relative pronouns and adverbs of attributive clauses.2. Lead students to learn to use some special cases concerning restrictive relative clauses flexibly.2. Enable students to use the basic phrases structures flexibly.3. Strengthen students’ great interest in grammar learning.1. Help students to appreciate the function of relative pronouns and adverbs of attributive clauses in a sentence2. Instruct students to write essays using the proper relative pronouns and adverbs of attributive clauses.本節(jié)語法思考:定語從句在復合句中的作用是什么? 關(guān)系詞有哪些?定語從句在復合句中的作用相當于形容詞,它在句中作定語修飾名詞或代詞。他們在先行詞和定語從句之間起到聯(lián)系作用,同時在意義上代表先行詞并在定語從句中擔任一個成分。被定語從句所修飾的詞稱先行詞,定語從句一般放在先行詞的后面。
The theme of the reading and thinking is about “Understanding how a problem was solved”.The Listening & Speaking & Talking is about international co-work to protect the Mount Tai, in which the students from seven countries came up with many solutions even create the Mount Tai App. This section aims at showing how to solve a difficult and even tough problem about protecting the cultural heritage by the international co-work. So in this section, cultivating students’ international awareness is very clear and important. Concretely, with the economic development, how to balance the protection of cultural relics and social development is a big challenge for human. In the 1950s, the Egyptian government wanted to build the Aswan Dam across the Nile to control floods, produce electricity and water farms. But the proposal led to protests because it would destroy a lot of cultural relics. The Egyptian had no choice but ask the UN for help. Therefore, a international cooperation about how to protect the cultural relics began, which involved the time length about 20 years and a large amount of fund. Then, the problems was solved. 1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline3. Learn how to solve a tough problem by asking for help and cooperation4. Have the international awareness and understand the great strength of international cooperation.1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline.3. Learn how to solve a tough problem by asking for help and cooperation.
This unit is about the Internet, which has a great influence to our humans and our lives. During the Listening & Speaking & Talking and Reading and Thinking section, the influence in examples has been shown. Thus, use the Present Perfect Tense is appropriate. However, in order to show the justice or weaken the doer of the behavior/action, it’s better to use the Present Perfect Passive Voice than the Present Perfect Tense. Besides, having learned to use the Present Perfect Passive Voice, students can beautify their language in their writing. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. Step 1 Observe the following sentences, then change the sentences into passive voice.He has been selected to take part in the sports meeting.(肯定句)他已被挑選出來參加運動會。The ink has not been removed from his overcoat.(否定句)墨跡還沒有從他外套上去掉。
Listening and Speaking introduces the topic of “ask about online habits”. Many middle school students have been surfing the Internet for many years, but what they do with the Internet and how much time they spend every day may not be very clear to themselves, nor to other students. This section allows students to investigate their peers' Internet use, which is conducive to their mutual understanding and understanding of the Internet. It can also help them reflect on their own online behavior, learn from other people's good online habits, and get rid of their bad online behavior.The listening text of this section is an investigation interview. The investigators interview specific groups with the same questions to obtain information, so as to understand their views, practices or attitudes on this issue. There are two specific questions: “how much time do you spend online every day? What do you usually do online?”. The answers of the three respondents provide rich and different information, and achieve the purpose of the investigators. The oral discourse structure of survey interviews generally includes greeting and explaining the purpose of the interview, presenting the interview questions and the respondents' answers. Listening and Talking introduces the theme of “choosing the right application ". Listening text is a conversation between Laura and Xiao Bo. In this part of listening, “oink”; “piggy bank” may cause the students' hearing comprehension limitation. Oink refers to sound word and pig's sound. So, add some oink to my piggy bank is often used to describe "making a little money".1. Guide students to understand the content of listening texts in terms of listening for definitions.2. Cultivate students' ability to define words and understand an investigation interview.
Step 5 Practice一、完成下列句子。1. Judy and I _______________(把車停下來(park))in an underground car Park near Trafalgar Square, where we could ______________________(讓我們的車充電(charge)).2. When we finally reached the service desk to ask for audio guides, we heard it ___________ that there were no audio guides____________(留下,剩下).3. We__________________________(發(fā)現(xiàn)自己對...很驚訝)the large number of visitors and the amount of noise at the entrance of the National Gallery.4. Judy ____________________(眼神專注于) Van Gogh’s Sunflowers. It was hard to approach the painting as there were so many people around.5. She ____________________(把這幅畫的復制品裝箱(box)) to ensure that it was delivered safely.答案:1.had our car parked get our car battery charged 2. announced left 3. found ourselves very surprised 4. had her eyes fixed on 5. had a copy of the painting boxed二、用過去分詞對下列句子進行改寫。1. Loch Ness was surrounded by beautiful natural landscape, which made it look amazing.2. Carl and his friend stayed with a generous family who offered them bread with butter and honey that was homemade.3. The family’s ancestors once attended to soldiers who were wounded in the First World War.4. The young people were attracted by the legend of Loch Ness. They watched over the lake with their cameras and binoculars, which were positioned on the hill.答案:1. Loch Ness surrounded by beautiful natural landscape looks amazing.2. Carl and his friends stayed with a generous family who offered them homemade bread with butter and honey.3. The family’s ancestors once attended to wounded soldiers in the First World War.4. The young people attracted by the legend of Loch Ness watched over the lake with their cameras and binoculars positioned on the hill.
Paragraph 3. Jan decided to start an IT club to teach old people how to use computers and the Internet. Paragraph 4. Jan has started taking online classes to learn more about how to use the Internet to make society better. Paragraph 5. Jan’s life has been greatly improved by the Internet. Step 5: Critical thinking:(1)How do you arrange your time spent on study and the Internet? Is it reasonable? I usually surf the Internet using my mobile phone for only an hour after class, and it is reasonable for me.(2)What are your online activities? Are they safe? I chat with my friends, read news and play games. I never give away my private information so I think they are safe.Step 4: summary Much has been written about the wonders of the World Wide Web. There are countless articles (1)______(tell) us how the Internet has made our lives more convenient. But the Internet has done a lot (2)_____(much) for people than simply make life more convenient. People’s lives (3) _________________(change) by online communities and social networks so far. Take Jan for example, who developed a serious illness that made her (4)_____(stick) at home with only her computer to keep (5)___(she) company. She joined an online group (6)______ she could share problems, support and advice with others. She considered the ability to remove the distance between people as one of the greatest (7)_______(benefit). She was so inspired (8)____ she started an IT club in which many people have been helped. She has started to learn more about how to use the Internet to make society better. Her next goal is to start a charity website to raise money (9)___ children in poor countries. Jan’s life has been (10)______(great) improved by the Internet. Step 5 Homework:Review what we have learned and find out the key language points in the text.
This unit is about history and traditions. From the opening page, we can know that this unit will introduce the history and traditions around the world. As Marcus Garvey says “A people without the knowledge of their past history, origin and culture is like a tree without roots”, it is important for students to realize the importance and value of knowing the history and traditions and their further meanings. And this part ( listening and speaking ) is divided into two parts: Part A---share views on historic sites, Part B ---talk about a visit to a historic tourist destination. By talking with a foreigner, the speakers introduce the historic attractions and their cultures. Part A is that William, a British student, who was going to visit the Confucius Temple and a Chinese student, Xiao Kong, who was going to the Confucius Temple to meet with the members of the research group, went together and exchanged their views on the Confucius Temple, Confucius, Confucius' descendants and Confucius' educational thoughts. Part B is a conversation between Xiao Yan, a youth hostel receptionist and Paul, a backpacker about the feelings and experience after visiting the Chinese famous tourist attraction Pingyao.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to talk about historic spots and great person.3. Instruct students to use functional sentences of showing one’s excitement, surprise and disappointment.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to discuss with their peers the related topics.3. Enable students to use the functional items of showing one’s excitement, surprise and disappointment.
⑦identity theft 身份盜竊⑧chat room 聊天室⑨draft your blog post 起草博客帖子⑩post embarrassing photos 張貼尷尬照片 【話題句式】 1. How do you stay safe online and avoid bad experiences on the Internet? 你如何在網(wǎng)上保持安全, 避免在網(wǎng)上的不良經(jīng)歷? 2. I’m not an expert, but many years as a blogger have taught me a thing or two. 我不是專家, 但作為一個博主, 我已經(jīng)學了好幾年了。 3. If you see or read something that makes you feel uncomfortable, leave the site immediately. 如果你看到或讀到一些讓你覺得不舒服的東西, 立即離開這個網(wǎng)站。4. Don’t give out your address or phone number. 別告訴別人你的地址或電話號碼。 5. Identity theft is a common and serious problem. 身份盜竊是一個常見而嚴重的問題。6. Being online is no excuse for being rude, and you don’t want to become a target for a troll or cyberbully. 上網(wǎng)并不是無禮的借口, 你也不想成為發(fā)挑釁帖子的人或網(wǎng)絡惡霸的目標。 7. Trolls often use several false names so that they can stay on a site. 發(fā)挑釁帖子的人經(jīng)常使用幾個假名, 這樣他們就可以留在一個網(wǎng)站上。8. However, the more polite you are, the less likely it is you will be attacked. 然而, 你越有禮貌, 你被攻擊的可能性就越小。
Features of languages1.Finally, in the 20th century, the southern part of Ireland broke away from the UK, which resulted in the full name we have today: the United Kingdom of Great Britain and Northern Ireland.該句是一個復合句。該句主句為:the southern part of Ireland broke away from the UK;which resulted in the full name we have today為which引導的定語從句代指前面整句話的內(nèi)容,we have today為定語從句修飾先行詞name。譯文:最后,在20世紀,愛爾蘭南部脫離英國,這導致了我們今天有的英國的全名:大不列顛及北愛爾蘭聯(lián)合王國。2.Almost everywhere you go in the UK, you will be surrounded by evidence of four different groups of people who took over at different times throughout history.該句是一個復合句。該句主句為:you will be surrounded by evidence of four different groups of people;其中Almost everywhere you go in the UK為讓步狀語從句; who took over at different times throughout history為定語從句修飾先行詞people。譯文:幾乎無論你走到英國的任何地方,你都會發(fā)現(xiàn)歷史上有四種不同的人在不同的時期統(tǒng)治過英國。3.The capital city London is a great place to start, as it is an ancient port city that has a history dating all the way back to Roman times.該句是一個復合句。該句主句為:The capital city London is a great place to start; as it is an ancient port city that has a history dating all the way back to Roman times.為原因狀語從句;dating all the way back to Roman times為現(xiàn)在分詞短語作定語修飾history。
Step1:自主探究。1.(教材P52)Born(bear) in the USA on 2 January 1970, Whitacre began studying music at the University of Nevada in 1988.2.(教材P52) Moved(move) by this music, he said, “It was like seeing color for the first time.”3.(教材P56)I was very afraid and I felt so alone and discouraged(discourage).4.(教材P58)Encouraged(encourage) by this first performance and the positive reaction of the audience, I have continued to play the piano and enjoy it more every day.Step2:語法要點精析。用法1:過去分詞作表語1).過去分詞可放在連系動詞be, get, feel, remain, seem, look, become等之后作表語,表示主語所處的狀態(tài)Tom was astonished to see a snake moving across the floor.湯姆很驚訝地看到一條蛇正爬過地板。Finally the baby felt tired of playing with those toys.終于嬰兒厭倦了玩那些玩具。注意:1).過去分詞作表語時與被動語態(tài)的區(qū)別過去分詞作表語時,強調(diào)主語所處的狀態(tài);而動詞的被動語態(tài)表示主語是動作的承受者,強調(diào)動作。The library is now closed.(狀態(tài))圖書館現(xiàn)在關(guān)閉了。The cup was broken by my little sister yesterday.(動作)昨天我妹妹把杯子打碎了。2)感覺類及物動詞的現(xiàn)在分詞與過去分詞作表語的區(qū)別過去分詞作表語多表示人自身的感受或事物自身的狀態(tài),常譯作“感到……的”;現(xiàn)在分詞多表示事物具有的特性,常譯作“令人……的”。
This section focuses on "learning about experiencing music Online". This virtual choir is a new form of music performance. Members from all over the world don't need to love to come to a place. Instead, they use the new technology to model the various parts and wonderful virtual harmony group of music in the family. Students need to understand the main meaning of each paragraph. Finding topic sentences is an important way to understand the general idea of a paragraph. After the topic sentence, it is usually the detail sentence that supports and explains the topic sentence. Some paragraphs have obvious subject sentences, for example, the first sentence of the second paragraph is the subject sentence of the paragraph, and the following sentenceStudents need to pay attention to the topic sentences and key sentences, and then pay attention to how the sentences after the meaning explain, explain and support the topic sentences or key sentences before.1.Guide students to learn about experiencing music online2.Guide students to scan and circle the information in the text.3.Guide students to find the numbers and dates to fill in the timeline.4.Guide students to learn more about music by completing the sentences with the correct forms of the words and phrases. And then make a mind map about the outline of the passage.1. Guide students to pay attention to reading strategies, such as prediction, self-questioning and scanning.2. Help students sort out the main meaning of each paragraph and understand the narrative characteristics of "timeline” in illustrative style.3. Lead students to understand the changes that have been caused by the Internet.
(4)Now we have heard a number of outstanding speeches ... 我們已經(jīng)聆聽了許多精彩的發(fā)言……(5)Because we wanted the nations of the world, working together, to deal with ... 因為我們希望全世界各國團結(jié)起來去應對……(6)And if we do not act ... 如果我們不采取行動……(7)Now, I share the concerns that have been expressed ... 我也同意對于……表達的擔心(8)Let us show the world that by working together we can ... 讓我們告訴全世界,通過一起努力我們可以……(9)It is now time for us to ... 是時候我們……(10)And I have always wished that ... 我一直希望……(11)Thank you for letting me share this day with me.感謝你們和我共度這一天。實踐演練:假如你是高中生李華,你校將舉辦一次以“音樂”為主題的演講比賽,請你按照主題,寫下你的演講稿。注意:詞數(shù)100左右。First of all, thank you for listening to my speech. My topic is: love music like love yourself.Music is like the air we need to maintain our normal lives around us. You can't imagine how terrible a world without music would be. Movies and TV shows have no music, only dry conversations and scenes; mobile phones only vibrations; streets only noisy crowds; cafes, western restaurants only depressed meals. What a terrible world it is!As a student, I hope we all can enjoy the fun brought by music in our spare time. Instead of just listening to music, we can even make our own music. Let's enjoy the fun of music!Thanks again for your attention!
環(huán)節(jié)三情景模擬 情感升華首先:1、本課開始觀看的視頻中:選出村長體現(xiàn)了村民參加選舉的什么態(tài)度?生活中一些人“多我一票不多,少我一票不少,選舉與我無關(guān)"的想法2、你如何看待上述兩種不同態(tài)度?為什么?發(fā)表你的看法【教師這個過程中點撥、引導】如果我們都不珍惜自己的選舉權(quán),那么我們的國家將會出現(xiàn)什么后果?3、那么作為將來選民和被選舉人,你們認為應具有那些政治素養(yǎng)才能適應?學生結(jié)合教材思考(1)(提示)不行使或不認真行使自己的選舉權(quán),意味著我們將不能選舉出能為人民謀福利的當家人,意味著我們的國家將由重蹈舊中國的覆轍。(2)從態(tài)度上講:公民應積極參加選舉,認真行使這一權(quán)利,不斷增強公民意識和主人翁意識,增強公民的參與感和責任感。(3)從能力上講:要不斷提高公民的政治參與能力(政治素質(zhì)、文化素質(zhì)、議政能力),在周全考慮、理性判斷的基礎(chǔ)上,鄭重地投出自己的一票。
預測回答:成龍在影視,武術(shù)方面的價值,對于某個人,某個集團的價值。知識引導:人的價值體現(xiàn)在多方面的,可以是物質(zhì)方面,也可以是精神方面,可以是對某個人或某個集團的價值,也可以是對人類和社會的價值。設(shè)置目的:從學生感興趣的人物入手,分析對人的價值的評價。讓學生自己分析總結(jié),體現(xiàn)學生在新課改下的主體地位。從上述事例中我們可以看出人的價值是什么?如何評價?(學生活動)2.人的價值:在于創(chuàng)造價值,在于對社會的責任和貢獻,即通過自己的活動滿足自己所屬的社會、他人以及自己的需要。(幻燈片顯示)3.人的價值評價:看他的貢獻,最根本的是對社會發(fā)展和人類進步事業(yè)的貢獻。(幻燈片顯示)老師總結(jié):對社會的貢獻并不是高高在上,不可觸及。只要是做自己該做的事,從身邊的小事做起,普普通通的勞動就是貢獻社會和他人。學生歸納:人生價值原理二、價值觀的導向作用(板書)1.價值觀的含義人們在認識各種具體事物的價值的基礎(chǔ)上,形成對事物價值的總的看法和根本觀點。
方法點撥教師:有的同學敘述事實論據(jù)時,不突出重點和精華,不注意取舍,水分太多,有許多的敘述描寫,有時還有詳細的故事情節(jié),文章幾乎成了記敘文,使文章的論點無法得到充分的證明,這是寫議論文的大忌。那么:議論文中的記敘有哪些特點?同學各抒己見。投影顯示:1.議論中的記敘不是單純的寫人記事,記敘文字是為議論服務的,其目的是為作者所闡明的道理提供事實依據(jù)。所以,在記敘時要求簡潔、概括,舍棄其中的細節(jié),僅僅交代清楚事件或者人物的概貌即可,一般不在各種描寫手段上下功夫,只要把能證明觀點的那個部分、側(cè)面交代清楚就行了。2.議論文中的記敘性文字不得超過總字數(shù)的1/3,否則視為文體不當。能力提升一、教師:了解了議論文中的記敘的特點,接下來我們看看今天的話題:“愛的奉獻”,你想從哪個角度立論?有哪些素材?
過渡:下面我們從時間角度分析世界人口數(shù)量變化的趨勢是怎樣的呢?為什么會這樣呢?板書:1、人口自然增長的時間變化(引導學生讀課本圖1.2和圖1.3,讓學生分析)教師首先讓學生說出閱讀地理曲線統(tǒng)計圖的一般步驟和方法,然后總結(jié)歸納:1、 讀圖名。2、 讀各個坐標分別表示什么變量(兩圖橫坐標均表示時間,縱坐標均為相應時期人口數(shù))。3、 判讀圖形變化特征(兩圖中曲線曲率的變化反映對應時段內(nèi)人口自然增長率的大?。?。4、 思考變量之間的因果關(guān)系(兩圖均反映不同歷史時期世界人口數(shù)量增長的不同特點)。問:世界人口數(shù)量變化的總趨勢是什么?(讓學生結(jié)合課本P2讀圖思考題,分析回答同時讓學生閱讀課本圖1.3,在圖1.2中找出圖1.3所在的時段,指導學生自學P3第一段,讓學生分析近100年全球人口快速增長的原因。最后師生共同歸納總結(jié),填寫下表。)
談到這,如果有人會說這僅僅是在于我個人與戰(zhàn)場之上,戰(zhàn)場之下另當別論,那么,他完全錯了。在我小學四年級的語文課上有兩個人發(fā)言積極,一個姓黃,一個姓康,黃同學發(fā)言比康同學更積極,班上的同學常以為黃同學是個了不得的人物,后來,教語文的吳老師曾悄悄地告訴我:班上真正厲害的是康x,那黃x沒什么,說的全是“一點通”上的,照搬不誤。說到這,我還得厚著臉皮自夸一下,在四年級時,我和康同學是同坐,一次,老師叫我們對一片課文(好象是寫黃繼光舍身炸暗堡)的一個段落提問題時,我悄悄地對康同學說了一個問題,康同學對我說:“你站起來說嘛?!眱?nèi)向的我遙遙頭,康同學便站舉手,并起來將我的問題大聲地說了出來,結(jié)果老師說:“恩,康x的問題提得很好?!?/p>
一、教材分析人教版高中思想政治必修4生活與哲學第一單元第三課第二框題《哲學史上的偉大變革》。本框主要內(nèi)容有馬克思主義哲學的產(chǎn)生和它的基本特征、馬克思主義的中國化的三大理論成果。學習本框內(nèi)容對學生來講,將有助于他們正確認識馬克思主義,運用馬克思主義中國化的理論成果,分析解決遇到的社會問題。具有很強的現(xiàn)實指導意義。二、學情分析高二學生已經(jīng)具備了一定的歷史知識,思維能力有一定提高,思想活躍,處于世界觀、人生觀形成時期,對一些社會現(xiàn)象能主動思考,但尚需正確加以引導,激發(fā)學生學習馬克思主義哲學的興趣。三、教學目標1.馬克思主義哲學產(chǎn)生的階級基礎(chǔ)、自然科學基礎(chǔ)和理論來源,馬克思主義哲學的基本特征。2.通過對馬克思主義哲學的產(chǎn)生和基本特征的學習,培養(yǎng)學生鑒別理論是非的能力,進而運用馬克思主義哲學的基本觀點分析和解決生活實踐中的問題。3.實踐的觀點是馬克思主義哲學的首要和基本的觀點,培養(yǎng)學生在實踐中分析問題和解決問題的能力,進而培養(yǎng)學生在實踐活動中的科學探索精神和革命批判精神。