必修五Unit1教案Warming up Pre-reading Reading and Comprehendin1

人教版英语高一必修一Unit5 Warming up、Pre-reading、Reading、Comprehending教案

人教版：高中一年级英语（上）Unit5 Nelson Mandela- a modern hero阅读课教学设计【Analysis of teaching material】The teaching material is the reading part from Unit1, Module2 NSEFC. The topic of this unit is Nelson Mandela and the good qualities of him about fight for the black. The reading passage tells the history of the black’s life and their fight aginst the government with the help of Mandela.【Analysis of students】The students are from Grade1 in senior high school. They have achieved certain English level and they have the ability to get the basic message of the reading. The students are easily activated and want to air their own opinions on the topic. And the students know some great person at home and abroad. But they may not know Mandela before. Their vocabulary is limited so they may have difficulties in understanding some sentences.【Teaching objectives】Knowledge aimsStudents can master the key words and phrases of the passage.Skill aims1. Students can learn the background information of the black, especially the history of their fight.2. Students can predict the content of the passage based on the title.3. Students can scan the passage and find out the specific information such as why they choose the way of violence.4. Students can summarize the passage with the help of the clues of the passage.Emotion aimsStudents will learn some good qualities from Nelson Mandela.【Keys and difficult points】1. Students can scan the passage and find out the specific information such as why they choose the way of violence.2. Students can summarize the passage with the help of the clues of the passage.【Teaching method】1. Ask and answer approach：teacher guide by asking questions2. PWP: pre-reading, while reading, post reading【Teaching procedure】Stage I Warming upStep1 Show some pictures, for example, President Obama and Jorden, to make students know the success of the black today. And show some poor black people before, let students know the bad condition of the blackbefore.Step 2 Four challenges for students today.Challenge your reading speed; Challenge your comprehension; Challenge your memory; Challenge your speakingStage II While readingStep 3 Fast-readingTask 1 Ask students find out the main idea of this passage. (3mins) What is the general idea of the story?A.The poor life of the black in South Africa.B.The life of Mandela and how Elias’ met Mandela.C. The life of Elias’ changed before and after he met Nelson Mandela and what Mandela did.D. Why did the white people not treat the black people fairly in South Africa.Task 2 Then find out which para. belong to each part and what’s the main idea of each part？Step 4 Careful-readingStudents should answer some detailed questions from every para. The questions as follows.Task 1 Read part 1 carefully and answer the 2 questions.1.What did Mandela do to help black people?2. Why did Elias have to leave school?Task 2 Read part 2 carefully and fill the blanks.EventsPart2 (para.3-5) What did NM do? 1. He told Elias how to get the___________, so he could stay inJohannesburg.2. He organizedthe_________________.What did Eliasdo?1.He _____ the ANC YouthLeague.2.He helped NM ______ somegovernment buildings.Task 3 Why did the black fight for their rights with violence?•“the last thirty years have seen the greatest number of laws stopping our rights and progress, until today we have reached a stage where we have almost no rights at all.”•“…we were put in a position in which we had either to accept we were less important, or fight the Government. We chose to attack the law. We first broke the law in a way which was peaceful; when this was not allowed…only the n did we decide to answer violence with violence.”Stage III Post readingStep 5Group workWork in groups, have a try to make an interview between a reporter and Elias.Examples:A: When did you begin to school?B: I began school at six, but ……A: Why did you leave school?B: Because … …A: What did you do … …B: I … …A: How … …B: ... …Step 6 What can we learn from Mandela?(discussion again)Step 7Some words for you:Good qualities are the root of great people.If you are brave, you will never fear any difficulty.If you are persistence, you will achieve whatever you want.If you are faithful, success will eventually embrace(拥抱) you！Stage V HomeworkWrite a short passage about a great person that you admire.。

高中英语必修五《unit1 Great Scientists》示范说课稿

《unit1 Great Scientists》说课稿各位评委老师，上午好！我是号考生，我今天说课的题目是《unit1 Great Scientists》。

我主要从教材分析、教学方法与策略、教学过程、板书设计等几个步骤向大家详细地讲解我对这节课的安排。

一．说教材1. 教材内容本节课是人教课标版必修5第一单元的第一课时的Reading部分，是该单元的主要内容，它介绍了英国著名医生John Snow是如何通过考察、分析、探究的科学方法，发现并控制“霍乱”这种传染病的。

通过阅读课文，使学生感悟科学家的周密观察、勇于探索、认真分析的科学精神，使学生了解科学方发现的全过程具有其科学的严密性。

2. 教学目标结合单元教学要求和本课特点，充分考虑学生的年龄特点、认知水平，遂将本课的教学目标确定为：知识目标1) Get students to learn the useful new words and expressions in this part.2) Let students learn about some great scientists and their contribution.3) Have students read the passage and know about John Snow and how he defeated “King Cholera”.能力目标1) Develop students’ reading ability and let them learn different reading skills.2) Enable students to talk about great scientists and tell their stories.情感目标1) Let students learn from great scientists, stimulate their love and respect for them and develop their moral qualities.2) Develop student’s sense of cooperative learning.3. 教学重点因为本组教材的重点了解项目是“John Snow 破解King Cholera难题”，所以确定本课的教学重点是：1) Let students learn about some great scientists and their contributions.2) Get students to read the passage and know about John Snow and how he defeated “ King Cholera”.3) Have students learn different reading skills.4．教学难点考虑到学生拓展阅读能力，语言输出能力等方面还需进一步努力，所以将本课的教学难点确定为：1) Develop students’ reading ability.2) Enable students to talk about great scientists and tell their stories.3) Let students learn how to organize scientific research.二．说教法和学法1. 教学方法引导学生独立思考，合作学习，进行师生、生生互动的“任务型”教学，设计了许多易于操作的任务型活动。

高二英语人教版必修5Unit 1 Warming up and reading精品教案

Unit 1 Warming up and reading精品教案Teaching aims1.To help students learn to describe people2.To help students learn to read a narration about John Snow3.To help students better understand “Great scientists”4.To help students learn to use some important words and expressions5.To help students identify examples of “The Past Participle (1) as thePredicative & the attribute”Period 1 Warming up and readingTeaching ProceduresI. Warming upStep I Lead inTalk about scientist.T: Hi, morning, class. Nice to see you on this special day, the day when you become a senior two grader. I am happy to be with you helping you with your English. Today we are to read about a certain scientist. But first let’s define the word “scientist”. What is a scientist?A scientist is a person who works in science, trying to understand how the universe or other things work.Scientists can work in different areas of science. Here are some examples: Those that study physics are physicists. Those that study chemistry are chemists. Those that study biology are biologists.Step IIAsk the students to try the quiz and find out who knows the most.T: There are some great scientific achievements that have changed the world. Can you name some of them? What kind of role do they play in the field of science? Do these achievements have anything in common? Match the inventions with their inventors below before you answer all these questions.1. Archimedes, Ancient Greek (287-212 BC), a mathematician.2. Charles Darwin, Britain (1808-1882). The name of the book is Origin of Species.3. Thomas Newcomen, British (1663-1729), an inventor of steam engine.4. Gregor Mendel, Czech, a botanist and geneticist.5. Marie Curie, Polish and French, a chemist and physicist.6. Thomas Edison, American, an inventor.7. Leonardo da Vinci, Italian, an artist.8. Sir Humphry Davy, British, an inventor and chemist.9. Zhang Heng, ancient China, an inventor.10. Stepper Hawking, British, a physicist.I I. Pre-readingStep IGet the students to discuss the questions on page 1 with their partners. Then ask the students to report their work. Encourage the students to express their different opinions.1.What do you know about infectious diseases?Infectious diseases can be spread to other people. They have an unknown cause and need public health care to solve them. People may be exposed to infectious disease, so may animals, such as bird flu，AIDS, SARS are infectious diseases. Infectious diseases are difficult to cure.2.What do you know about cholera?Cholera is the illness caused by a bacterium called Vibrio cholerae. It infects people’s intestines(肠), causing diarrhea and leg cramps (抽筋).The most common cause of cholera is by someone eating food or drinking water that has been contaminated(污染) with the bacteria. Cholera can be mild(不严重的) or even without immediate symptoms(症状), but a severe case can lead to death without immediately treatment.3. Do you know how to prove a new idea in scientific research?Anybody might come out with a new idea. But how do we prove it in scientific research? There are seven stages in examining a new idea in scientific research. And they can be put in the following order. What order would you put the seven in? Just guess.Find a problem→ Make up a question→ Think of a method→ Collect results→Analyse the results→ Draw a conclusion→ Repeat if necessaryIII. ReadingStep I Pre-reading1.Do you know John Snow?John Snow is a well-known doctor in the 19th century in London and he defeated “King Cholera”.2.Do you know what kind of disease is cholera?It is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat.Let’s get to know how Dr. John Snow defeated “King Cholera” in 1854 in London in this reading passage:Step II SkimmingRead the passage and answer the questions.1.Who defeats “King Cholera“? (John Snow)2.What happened in 1854? (Cholera outbreak hit London.)3.How many people died in 10 days? (500)4.Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9Cambridge Street?(These families had not drunk the water from the Broad Street pump.)(Optional)Skim the passage and find the information to complete the form below.Who When What How ResultJohn Snow 1854 helpingordinarypeopleexposed tocholera Examining the sourceof all water suppliesand finding newmethods of dealingwith polluted waster“King Cholera”defeatedStep III ScanningRead the passage and number these events in the order that they happened.2 John Snow began to test two theories.1 An outbreak of cholera hit London in1854.4 John Snow marked the deaths on a map.7 He announced that the water carried the disease.3 John Snow investigated two streets where the outbreak was very severe.8 King Cholera was defeated.5 He found that most of the deaths were near a water pump.6 He had the handle removed from the water pump.Step IV Main idea and correct stageRead the passage and put the correct stages into the reading about research into a disease.John Snow Defeats “King Cholera”Paragraph Stages General ideas1 Find a problem:What cause the cholera?The causes of cholera2 Make up a question:Which is right?The correct or possible theory3 Think of a method:Test two theoryCollect data on where people were ill anddied and where they got their water4 Collect results:Mark the deathPlot information on a map to find outwhere people died or did not die5 Analyze the results:Find the resource of thewaterLook into the water to see if that is thecause of the illness6 Find supporting evidence Find other evidences to confirm hisconclusion7 Draw a conclusion The polluted dirty source of drinkingwater was to blame for the cause of theLondon choleraStep V Group discussionAnswer t he questions (Finish exercise 2 on Page 3)1. John Snow believed Idea 2 was right. How did he finally prove it?(John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.)2. Do you think John Snow would have solved this problem without the map?(No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.)3. Cholera is a 19th century disease. What disease do you think is similar to cholera today?(Two diseases, which are similar today, are SARS and AIDS because they are both serious, have an unknown cause and need public health care to solve them.) Step VI Using the stages for scientific research and write a summary.。

高中英语《必修五第一单元单元词汇课》优质课教案、教学设计

教案设计(Learning about Language)部分由“词汇学习”和“语法学习”两项内容组成。

“词汇学习” 部分练习1 通过词的后缀训练名词与形容词之间的相互转换提倡学生使用词典。

练习2 选词填空练习，利用语篇集中训练本单元的一些重点词汇的用法。

练习3 是单句填空，而且所选的十个句子或是引文或是谚语。

“语法学习”部分主要是帮助学生了解、熟悉并掌握情态动词的用法，共有三项练习。

“语言运用”(Using Language)部分主要是让学生运用本单元所学的语言知识与课文内容进行听、说、读、写等的综合训练。

“听与说” (Listening and speaking); 是听前准备活动。

“读与写”(Reading and writing)主要设计是：阅读内容主要讲述一位来自高中的学生对全球变暖十分关注并向地球保护协会写了一封信询问措施。

协会给出了相当令人满意的回信。

短文后的三个问题帮助学生理解文章的内容。

写信的部分主要是要求学生根据上面阅读文章的内容通过思考写出自己的思想、自己的做法，尝试解决问题的不同途径。

教材提供给学生一些写作时要思考的问题，帮助学生完成写作构思。

“小结”(S ummin g U p)部分让学生根据所给出的提示对所学各项内容进行总结。

“学习建议”(L e a r nin g T ip)部分主要建议学生看阅读报纸，多读书多总结，以培养学生运用语言资源的能力。

五、教学重点Teaching important pointsa.The usage of language points of this unit.b.To learn to use these words.教学难点Teaching difficult pointsa.Enable students to get the hang of the language points completely.b.Get students to discuss warmly and express their own and excellent idea.教学方法Teaching methodsa.Brainstormingb.Task based language teaching.c.Individual, pair or group work to finish each task.d.Discussion.教学过程:1．concludevi.推断出vt.结束①conclude 推断出；断定conclude...with... 以...结束conclusion n ．结论；结束arrive at/come to/reach/draw a conclusion 得出结论in conclusion 总而言之学生去说;学生能做的教师就不要代替学生去做;学生回答问题无论对还是错，教师不要急于评判，让学生自已去评判与总结;对发言积极的学生要及时鼓励，决不能因为他们的答案与教师的标准答案不一样就否定并伤害学生的自尊心。

人教版高中英语必修5 Unit1 Warming up and reading 精品教案

Unit 1 Warming up and reading精品教案Teaching aims1.To help students learn to describe people2.To help students learn to read a narration about John Snow3.To help students better understand “Great scientists”4.To help students learn to use some important words and expressions5.To help students identify examples of “The Past Participle (1) as thePredicative & the attribute”Period 1 Warming up and readingTeaching ProceduresI. Warming upStep I Lead inTalk about scientist.T: Hi, morning, class. Nice to see you on this special day, the day when you become a senior two grader. I am happy to be with you helping you with your English. Today we are to read about a certain scientist. But first let’s define the word “scientist”. What is a scientist?A scientist is a person who works in science, trying to understand how the universe or other things work.Scientists can work in different areas of science. Here are some examples: Those that study physics are physicists. Those that study chemistry are chemists. Those that study biology are biologists.Step IIAsk the students to try the quiz and find out who knows the most.T: There are some great scientific achievements that have changed the world. Can you name some of them? What kind of role do they play in the field of science? Do these achievements have anything in common? Match the inventions with their inventors below before you answer all these questions.1. Archimedes, Ancient Greek (287-212 BC), a mathematician.2. Charles Darwin, Britain (1808-1882). The name of the book is Origin of Species.3. Thomas Newcomen, British (1663-1729), an inventor of steam engine.4. Gregor Mendel, Czech, a botanist and geneticist.5. Marie Curie, Polish and French, a chemist and physicist.6. Thomas Edison, American, an inventor.7. Leonardo da Vinci, Italian, an artist.8. Sir Humphry Davy, British, an inventor and chemist.9. Zhang Heng, ancient China, an inventor.10. Stepper Hawking, British, a physicist.I I. Pre-readingStep IGet the students to discuss the questions on page 1 with their partners. Then ask the students to report their work. Encourage the students to express their different opinions.1.What do you know about infectious diseases?Infectious diseases can be spread to other people. They have an unknown cause and need public health care to solve them. People may be exposed to infectious disease, so may animals, such as bird flu，AIDS, SARS are infectious diseases.Infectious diseases are difficult to cure.2.What do you know about cholera?Cholera is the illness caused by a bacterium called Vibrio cholerae. It infects people’s intestines(肠), causing diarrhea and leg cramps (抽筋).The most common cause of cholera is by someone eating food or drinking water that has been contaminated(污染) with the bacteria. Cholera can be mild(不严重的) or even without immediate symptoms(症状), but a severe case can lead to death without immediately treatment.3. Do you know how to prove a new idea in scientific research?Anybody might come out with a new idea. But how do we prove it in scientific research? There are seven stages in examining a new idea in scientific research. And they can be put in the following order. What order would you put the seven in? Just guess.。

人教版高中英语必修五Unit1《SectionOneWarmingupandPre-reading》课件1

MonaLisa
LastSupper
8.Whoinventedalamp tokeepminerssafe underground?
SirHumphryDavy (1778-1829)British
Miniature(小型的)Miner’sSafetyLamp
theSafetyLamp
9.Whoinventedtheearliestinstrumenttotellpe oplewhereearthquakeshappened?
GregorMendel (1822-1884) Czech(捷克人)
5.Whodiscoveredradium?
MarieCurie
Nothinginlifeisto befeared.Itisonlyt obe understood.
生活中没有什么可怕的东西, 只有需要理解的东西。
Thepowerofradium
1.Whichscientistdiscoveredthatobjectsinw aterareliftedupbyaforcethathelpsthemfloat?
Archimedes (287-212BC) anancientGreek mathematician &physicist
2.Whowroteabook explaininghowanimals andplantsdevelopedas theenvironmentchanged?
6.Whoinventedthewayofgivingelectricit ytoeverybodyinlargecities?
ThomasAlvaEdison
Geniusisonepercentinspir ationandninetyninepercentperspiration.

人教版英语必修五Unit5 first-aid warming up ,pre-reading and reading教案

Unit 5 First AidPeriod One ：warming up ，pre-reading and reading Teaching Goals:1．Encourage the students to discuss accidents and first aid . 2．Enable the students to talk about different accidents and how to give first aid in different situations.3．Enable the Ss to learn how to use what they’ve learnt to do first aid treatment for burns correctly.4．Let the Ss learn the reading skill of getting the main idea of each paragraph.Key Teaching PointsHow to improve the Ss’ reading ability.Difficult points1. How to grasp the main idea of each paragraph .2.Help the students to use the expressions to describe the accidents and how to give first aid.Teaching methods1．Brainstorm & Skimming & scanning methods to make the Ss get a good understanding of the text.2．Discussion methods to make the Ss understand what they’ve learned in class.3．Pair work of group to get every student to take part in the teaching-and-learning activities.Teaching aidsA recorder, a projector, and a computerTeaching proceduresStep One Warming upPresentation1. Lead-in question: Watch a video, and fill in the blanks. What is first aid?First aid is a temporary form of help given to someone who suddenly falls ill or gets injured before a doctor can be found. Often the illness or injury is not serious, but there are other times when giving first aid quickly will save one’s life.2. Brainstorming: What words can you think of when you talk about accidents and first aid?3. Group discussion.Turn to page 33, look at the pictures.What happen in each picture and what kind of first aid should you give in the following situation.Talk about different situations and the way they should give first aid.A snake bite: A snake has bitten him on his leg.(The person bitten must get to a doctor or hospitalat once; /Speed is very important. /It will help the doctor greatly if you can tell him what kind of snake it was, or describe the situation .) Bleeding: She has cut her arm with some broken glass and is bleeding badly. (Try to stop the bleeding;/Press a handkerchief onto the bleeding point and hold it there;/Hold up the part of body which is bleeding if possible.)* (watch the video about how to deal with bleeding )A sprained ankle: He has badly sprained his ankle. (Tied with medical bandage. /It is better to avoid walking with the injured ankle. /It is correct to use ice bag for removing pain and bleeding, and also not influence our own body healing.)*( a video about a sprained ankle)Choking : She is choking on a piece of food (Make him /her spit by patting him/her on the back./Don’t eat too fast and don’t forget to chew your food./To avoid this, we shouldn’t talk or laugh when eating.)*（a video about unconscious choking）A broken arm : She has broken her arm. (Do not move the patient. /Send for an ambulance at once. /Treat for shock if necessary.A bleeding nose: He has a nose/a nose bleed. (Stay calm. / Breathe through the mouth, not the nose. / Sit up and bend the head slightly forward. / Pinch捏both nostrils鼻孔shut using a thumb andforefinger./ Spit out any blood that collects in the mouth.4. Quiz for first aid1. The best way to treat a hurt ankle is ___A. Put an ice pack on your ankle.B. Put a heating pad(垫子)around your ankle.C. Keep on walking and jumping.2. If you get a nosebleed, gently let your head back to stop the bleeding.__A. TrueB. False3. To treat a burn, you ___A. Rub some butter on it.B. Hold the burnt part under cold running water.C. Put salt on the burnt part.4. You should wait at least five minutes before touching somebody who has been struck by lightening, or you might get a shock (打击). ___A. TrueB. False5.Your friend has an asthma(哮喘) attack, but she doesn’t have her medicine. You’d better___A. Get a paper bag for her to breathe into.B. Get her a cup of coffee.C. Take her outside for fresh air.6. To treat a choke, you should make him /her spit by patting him/her onthe back. ___A. TrueB. False7. If someone is having a heart attack, you should first___A. Call 120B. Perform CPR (心肺复苏)8.Which person would you help first?___A Li Yan who has cut her foot on glassB Xue Jin whose nose is bleedingC GaoYuan who is on the ground not breathingD Wang Feng who has broken her arm.9.When carrying out rescue breathing, how many times a minute should you blow air into thevictim’s mouth? ______.A 4B 8C 15D 2010. How would you stop severe bleeding? ___A cover the wound with plasticB wash the woundC do nothing as the bleeding will stop by itselfD put a bandage over the wound and then press on it11. A friend is choking on a piece of food and is coughing badly. What should you do? ___A nothingB carry out rescue breathingC have her lie down and restD slap her four or five times on her backStep Two Pre-reading:1. Questions for the picture on P33:What has happened? What sort of injuries the child will have?What kind of first aid would you perform in the situation of burning? Key: Cool the area of skin; Wash it under the cold running water. Cover the wound with bandage/clean cloth. See a doctor if necessary. Step Three Fast readingLet the Ss read the passage fast and then find out the answers to the questions1. What will the passage be about?2. What do they tell you about the passage?3. In which order are these topics covered in the text? Number them from 1 to 5.(3) the three types of burns(5) what to do if someone gets burned(1 ) the functions of the skin(4) the symptoms of burns(2) how we get burnsStep Four Careful reading1.What can skin do for our body ?Protect you against diseases, poisons and the sun’s harmful rays.Keep you warm or cool.Prevent you from losing water.Give you sense of touch.2.Causes of burnsYou can get burnt by : hot liquids; steam; fire radiation; the sun electricity and chemicals3.Types of burnWhat are they?1.First degree burns.2. Second degree burns3.Third degree burns4. Label these pictures first, second and third degree burns.(P35 Ex2)5.Answer the questions(Page35 Ex3)1).Why should you put cold water on a burn?Because the cold water stops the burning process, stops the pain and reduces the swelling.2). Why doesn’t a third degree burn hurt?Because in the third degree burn the nerves have been damaged. If there are no nerves, there is no pain.3). Why do you think clothes and jewellery near burns should be removed?Because bacteria from the clothes and jewellery could infect the burns. 4). If someone has a third degree burn, why might you see tissue?Because all the layers of the skin have been burnt showing the tissue underneath.7．Decide whether the first aid treatment is Right (R) or Wrong (W). (35 Ex4)Step 4 HomeworkRead the reading carefully after class and preview the language points in the reading.。

【英语周报】人教版必修五教案：UnitPeriodWarmingUpPrereadingReadingComprehending

Period 1 & 2 Warming Up & Pre-reading, Reading ComprehendingTeaching Goals:1.To illustrate Ss’ imagination of future life.2.To arouse Ss to pay more attention to the problems that probably appeared in the futurelife.3.To make Ss know the difference of life between the past, present and future.Teaching Procedures:Step 1 Leading-inPurpose: To talk about past and future changes of life.1. Group workLet Ss discuss the questions in groups of four.(1)How do you usually get to school?(2)Where do you live, in a city or in the countryside?(3)Where would you like to live in the future?(4)Do you live in a flat or a house?(5)Do you have a room of you won? Can you describe the room in the picture?(6)What kind of housing would you like to have in the future?(7)What would you like to have in your room?(8)What can we use to build houses? (brick, stone , steel , glass, ice, wood , plastic bamboo, …) 2. ConclusionThis unit introduces what life in the future might be like to Ss. By discussing and answering the questions above can make Ss have a general understanding of the present and future life and can also illustrate Ss’ imagination about the future life.Step 2. Warming Up1. Pair workIn pairs let Ss list the changes in housing, transport, jobs, families and education will happen in the next century.2. Individual workAccording to the result of the above Pair work, fill in the chart.表格 1Present time In one Thousand Years’ TimeTransportWorkFinance andcurrencySuggested Answers:表格 2Step 3. Pre-reading1. Pair workAsk Ss to discuss the following questions in pairs.(1)Make a list of the problems human beings are facing today.(2) What problems do you think people will have overcome in one thousand years? Which ones do you think will still exist in AD 3008?Suggested Answers:(1) The seven serious problems facing mankind:①The first problem I would like to point out is the decline of morality.(道德沦丧)②The second problem is the racial bias problem. (种族歧视)③The third problem , which is a most serious problem , is the rapid depletion of resources on the Earth. (资源匮乏)④Now I come to the fourth problem, the problem of the large gap between the poor and the rich . (贫富悬殊)⑤The fifth problem is the pollution problem.(环境恶化)⑥Now I would like to talk about the sixth problem, the expensive arms race problem. (军备竞争)。