2017--2018学年人教版选修七Unit 2 Robots learning about language课时作业 (2)

新课标人教版 Unit 2 Robots 机器人核心词汇1．When she was telling us about her headache，her real aim was just to gain our____________(同情)．2．It was a reasonable ____________(评估)and probably pretty close to the truth. 3．The opening____________(章)gives a general overview of the subject.4．She got a ____________(兼职的)job to supplement the family income.5．When climbing a mountain I advise beginners to use a ____________(手杖)．6．The baggage is two kilos____________(超重)，so you have to pay two more dollars. 7．I like my clothes to be simple but ____________(优雅的)．8．I shall be pleased to go, if you will____________(陪伴)me.9．用satisfy的适当形式填空(1)Nothing____________her；she’s always complaining.(2)I am not at all____________with the present situation.(3)The service that the company offers all over the country is quite____________.(4)Last night they watched our performance with____________.10．She ____________a lot of money and her____________for wealth made her put all her money in the bank.When she learned that it was possible that interest rate should be reduced，she almost went crazy.(desire)1.sympathy2.assessment3.chapter4.part­time5.staff6.overweight7.elegant8.accompany9.(1)satisfies(2)satisfied(3)satisfying (4)satisfaction 10.desired；desire高频短语1．________________ 试验；考验2．________________ 给……打电话3．________________ 转向；回转4．________________ 不管，别惹；让……一个人待着；和……单独在一起5．________________ 将……放在一边；为……节省或保留(钱或时间) 6．________________ 一共；总计7．________________ 一定做……8．________________ 寻找9．________________ 把……和……进行比较10．________________ 更确切地说11．________________ 对……低声说12．________________ 爱上……1.test out2.ring up3.turn around4.leave...alone5.set aside6.in all7.be bound to8.search forpare ...with... 10.or rather 11.whisper to 12.fall in love with重点句式1．His name was Tony and he seemed ____________like a human ____________a machine. 他的名字叫托尼，与其说他看上去像一台机器，倒不如说更像一个人。

Unit2Robots 〔2〕重点单词1．affection (n.)喜爱；爱；感情→affect(vt.)影响；感动→effect(n.)结果；作用；影响2．part-time (adj.)兼职的→full­time(adj.)全部时间的；专任的；全职的3．junior(adj.)较年幼的；资历较浅的；地位较低的(n.)年少者；晚辈；等级较低者→senior (adj.)年长的；资历较老的；地位较高的；高级的4．talent (n.)天才；特殊能力；才干→talented(adj.)有才能的；天才的5．theory(n.)理论→theoretical (adj.)理论上的6．obey (vt.& vi.)服从；顺从→disobey(vt.& vi.)不服从；违抗7．assessment (n.)评价；评定→assess(vt.)评价；评定；估价；估定重要短语1．将……放到一边 set aside2．从那时起 from then on3．除……之外(还)，也；和 as well as4. 一定做 be bound to5. 获得硕士学位 gain a master’s degree6. 认真对待某人/某事物 take sb. /sth. seriously关键句型Among his most famous works of science fiction, one for which he won an award was the Foundationtrilogy(1951­1953), three novels about the death and rebirth of a great empire in a galaxy of the future.1. set aside 将……放在一边；为……节省或保存(钱或时间)☞This problem is a little difficult so we should set it aside.这个问题有点难，因此，我们应把它放在一边。

人教版高中英语选修7《Unit 2 Robo ts》教案2篇Teaching plan of unit 2 robots for senior high school English El ective of PEP人教版高中英语选修7《Unit 2 Robots》教案2篇前言：英语作为在许多国际组织或者会议上都是必需语言，几乎所有学校选择英语作为其主要或唯一的外语必修课。

英语教学涉及多种专业理论知识，包括语言学、第二语言习得、词汇学、句法学、文体学、语料库理论、认知心理学等内容。

本教案根据英语课程标准的要求和教学对象的特点，将教学诸要素有序安排，确定合适的教学方案的设想和计划、并以启迪发展学生智力为根本目的。

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本文简要目录如下：【下载该文档后使用Word打开，按住键盘Ctrl键且鼠标单击目录内容即可跳转到对应篇章】1、篇章1：人教版高中英语选修7《Unit 2 Robots》教案2、篇章2：人教版高中英语选修7《Unit 2 Robots》教案篇章1:人教版高中英语选修7《Unit 2 Robots》教案教学准备教学目标Teaching goals 教学目标1.Be able to learn some important words and phrases2.Help students to learn about robots and science fiction教学重难点eaching important points教学重点Enable students to grasp what Tony did to help Claire and how her emotion developed during Tony’s stay at her house.Teaching dif ficult points 教学难点How Claire’s emotion developed during Tony’s stay at her house.教学过程Teaching procedures 教学过程Step I Warming upPresent a photo of robots. Then ask students to say something about robot.What is on the blackboard?What is a robot?What can a robot do?Step II Pre-readingAsk students to predict question:If you have a robot, will you fall in love with it ?Introduce the background of the text.Step III ReadingFast reading1.What is the text mainly about?It is mainly about how a household _________ was _________ ________ in a family.2.Find the characters in the storyLarry Belmont: working in a company that makes robotsClaire: Larry’s wife, a housewifeTony: the robotGladys Claffern: a woman that Claire envies3.Tell stu dents that Claire’s feelings towar ds Tony changed as the story developed. Read the story again and then fill in the blanks.Comprehensio nRead the sto ry again and find out Claire’s sense of failure and what helps did Tony offer to her.SummaryFill in the blanks according to the knowledge that we have learnt in this class.The company for which Larry worked was to have a newly?made robot____（call）Tony experimented with by his wife Claire at home. At _____first sight of Tony, Claire felt ________（alarm）. She thought it was absurd tha t a robot seemed more like a human than a ______ .For as long as three weeks, Tony wanted tohelp her to dress, which made Claire ________（embarrass） and she refused him. But she was glad that Ton y could make her home ________， give her a new h aircut and change her makeup. To improve her home，he could also ________ a list of items for her to buy. And finally Tony helped Claire win the victory to be ________ （envy）by those ladies like Gladys Claffern who Claire wanted to be like. ________made us unbelievable was that Claire fell in love ______Tony—a robot !课后习题Homework1.Surf the Internet to get more information about science fiction..2.Preview the language points in the text.篇章2:人教版高中英语选修7《Unit 2 Robots》教案【按住Ctrl键点此返回目录】教学准备教学目标教学目标1.语言知识: 使学生理解文章中表达情感变化词汇;熟悉有关机器人方面的话题。

Period 6Listening and Reading TaskTeaching aims1．Learn about robots and robots in the fight against landmines.2．Help students to learn how robots are helping human beings in clearing landmines.Teaching proceduresStep 1Lead－inPresent the pictures on Page 54 and ask students to tell what each robot does.(Students are encouraged to speak out their opinions freely.)Step 2Listening1．Listen to the interview and number the pictures in the order that you hear about them.Keys：4,2,1,3.2．Listen to the interview again and fill in as much of the table as you can. Share yourStep 3Reading task1．As we know，Robots are designed and built to do a task that is dangerous，uncomfortable，or repetitive for humans. Today we are going to read a magazine article about landmines.First，ask students to read this piece of news about landmines.Three decades of war in Cambodia have left scars in many forms throughout the country. Unfortunately，one of the most lasting legacies of the conflicts continues to claim new victimsdaily. Landmines，laid by the Khmer Rouge，the Heng Samrin and Hun Sen regimes，the Vietnamese，the KPNLF，and the Sihanoukists litter the countryside. In most cases，even the soldiers who planted the mines did not record where they were placed. Now，Cambodia has the one of the highest rates of physical disability of any country in the world. At the current rate of progress，it may take as many as 100 years to clear all the mines in Cambodia，and the UN estimates that with current technology，it will take nearly 1100 years to clear all the mines in the world.2．Next，present the students some mine signs and remind students that in spite of so many warning signs，there are still many victims as the pictures show.(In spite of so many warning signs，there are still many victims.Look at the following pictures.)3．Ask students to glance through the text quickly and answer the following questions in Exercise 1 on Page 58.(1)What is the main topic of this article？Which part of the text tells you that?(2)Who wrote the article?(3)What do the three pictures show you?(4)Where is research being done on robots that can find landmines?(5)In which two countries might the robots be used?Suggested answers：(1)The main topic is the role of robots in the fight against landmines. The title tells us that.(2)Natasha Wesley.(3)Someone using a metal detector to find landmines；the robot that can find landmines；some people who have lost their legs because of landmines.(4)Chiba University (Japan)．(5)Afghanistan and Cambodia.4．Work in groups to write questions for these answers in Exercise 2.Check your work with your partner.Suggested answers：Step 4Discussion1．First，ask students to read the following materials.From the text we've learned how serious the situation is. Many lives are put into danger. So we must do something to improve the situation. As we know，the US hasn't yet committed to the Mine Ban Treaty. I hope you will write a letter of suggestion to the president of the US. You may refer to the text2．Encourage students to write a letter of suggestion to the president of the US，for the US hasn't yet committed to the Mine Ban Treaty. In the letter you will suggest the US should stop manufacturing landmines and spend more money on solutions to clearing landmines，for example developing new robots to remove the landmines.You can refer to the following material：Producing one landmine costs $3，yet once in the ground it can cost more than $1000 to find and destroy，according to the ICBL.Over 80 per cent of the 15 000 to 20 000 landmine victims each year are civilians，and at least one in five are children，according to the International Campaign to Ban Landmines (ICBL)．The deadly legacy of landmines far outlasts the conflicts that gave rise to them. Among the most contaminated countries are Iraq，Cambodia，Afghanistan，Colombia，and Angola.If time is limited，ask students to finish it after class.Step 5HomeworkFinish writing the letter to the president of the US.A sample：Dear Mr.President，I read in the newspaper that the US hasn't yet committed to the Mine Ban Treaty. I'm writing to suggest your country sign on the agreement.1．Landmines kill or badly injure around 26 000 people every year. There are about 100 million landmines buried just beneath the surface of the ground in 60 countries. Among the most contaminated countries are Iraq，Cambodia，Afghanistan，Colombia，and Angola. I think this is one reason why people in these countries hate the US so much.2．Producing one landmine costs $3，yet once in the ground it can cost more than $1000 to find and destroy，according to the ICBL. So stop manufacturing landmines and spend more money on finding solutions to clearing the landmines. As you know，your country has designed the most advanced robots. Why not use your advanced technology and spend more money on designing some robots to clear the landmines. If so，it will benefit the whole world. People all over the world will think highly of you and your country. You and your country will become more influential.Japan has set a good example. They have developed robots that can be used to clear landmines. I hope your government will follow Japan's example.Thank you for reading the letter. I hope you will consider my suggestions. I believe you also hope the whole world will enjoy peace. Let's work together and make a peaceful world.Yours sincerely，Sun Cheng。

Unit 2 RobotsWarming upA robot is a machine designed to do jobs that are usually performed by humans. Robots are programmed and controlled by a computer. Today there are different kinds of robot, including industrial robots, household robots, and entertainment robots. Robots also often appear as characters in stories.机器人是一种机器，设计用来做通常是由人类执行的工作。

对机器人进行编程，由计算机进行控制。

今天有不同种类的机器人，包括工业机器人、家用机器人、娱乐机器人。

机器人也经常作为人物出现在故事里。

In groups, make a list of any science fiction, literature, films, video games, TV shows and cartoons you know that include robots as characters. Choose one and be prepared to tell the class about it briefly.以小组为单位，列出你熟悉的里面有机器人作为角色的所有科幻小说，文学，电影，视频游戏，电视剧和漫画的清单。

选择一个，准备给全班同学做个简要介绍。

❶过去分词designed做定语修饰machine中心词，可以看成是定语从句which is designed to do jobs的省略。

定语从句that are usually performed by humans可省that are变成usually performed by humans过去分词短语作定语。

Period 2 Language StudyTeaching aims1．To learn the useful expressions and sentence structures.2．To enable students to use language points both orally and in written forms.Teaching proceduresStep 1Learning words and phrases1．desire n．渴望；欲望；渴求；vt.希望得到；想要Do you think it is possible for a robot to have its own needs and desires?你认为机器人有可能有自己的需求和愿望吗？[拓展](1)desire作名词时，可接不定式或者for短语作定语，还可以接that 引导的同位语从句。

(2)desire作及物动词时的常见搭配：desire sth./to do sth./sb.to do sth./that...[注意]desire作名词后接同位语从句以及作动词后跟宾语从句时，从句常常用虚拟语气，即“(should)＋动词原形”结构。

[:Z#xx#k]The teacher desires me to come to school on time.＝The teacher desires that I should come to school on time.2．test out 试验；考验It was going to be_tested_out_by Larry' wife，Claire.它将由拉里的妻子克莱尔来试验。

[拓展]test sb.on sth.就某事(物)测试某人test sth.on sb./sth.在某人(物)身上做试验test sb.for sth.为某事检查某人Mr.Li will test us on_ grammar next week.下周李老师要检测我们的语法。

Unit 2 RobotsⅠ. 单元教学目标技能目标Skill Goals▲ Learn literary work about science, robots and science fiction writer—Isaac Asimov ▲ Talk about robots▲ Express supposition and belief▲ Revise the Passive V oice (I) (including the infinitive)▲ Science fiction ge nre: imaginative writingⅡ. 目标语言功能句式Supposition and belief I think ...I suppose ...Maybe ...I don‟t think ...I doubt ...I guess ...I believe ...I wonder ...I don‟t believe ...词汇1．四会词汇: fiction, desire, satisfaction, absent, alarm, alarmed, embarrassed, sympathy, elegant, pile, scan, fingernail, absurd, haircut, accompany, cushion, awful, affair, declare, envy, biography, junior, navy, talent, chapter, divorce, obey2．认读词汇: household，Isaac Asimov, Larry Belmont, Claire, Gladys, makeup, Marion, Philadelphia, PhD, The Foundation Trilogy, empire3．词组: test out, ring up, turn around, leave alone, set aside, in all, be bound to 4．重点词汇: desire, satisfaction, embarrassed, alarm, alarmed, sympathy, elegant, accompany, declare, envy, obey结构The Passive Infinitive:The company‟s new car is going to be designed in the coming months.重点句子She felt embarrassed and quickly told him to go. P11Claire thought it was ridiculous to be offered sympathy by a robot. P11By the amused and surprised look on her face, Claire knew that Gladys thought she was having an affair. P11It was when Asimov was eleven years old that his talent for writing became obvious. P16Ⅲ. 教材分析和教材重组1. 教材分析本单元以机器人和科幻小说为话题，介绍了20世纪世界知名的科幻小说家Isaac Asimov 写于1951的Satisfaction Guaranteed 和作者的生平。

Unit 2 RobotsStep 1 课前准备——单元考点自查自测1.词汇分层级识记过关2.语境活用填写过关3.经典句式背诵仿写过关4.类词巧积累事半功倍(一)分门别类攻单词——识形辨意·拓展应用(二)写用结合记短语——译写短语·语境活用(三)仿写活用练句式——经典句型·仿写背诵1.重点难点考点学通练透2.归纳总结拓展开阔视野3.方法规律技巧权威点拨4.面面俱到打创高效课堂第一时段 Warming up & Reading1．desire n. 渴望；欲望；渴求 vt. 希望得到；想要[教材原句] Do you think it is possible for a robot to have its own needs and desires?你认为机器人有可能有自己的需求和愿望吗？(1)have a strong desire ⎩⎪⎨⎪⎧ to do sth.for sth. 迫切想要做某事急于想得到某物have no desire to do sth. 不想做某事(2)desire to do sth. 渴望做某事desire sb. to do sth. 想要某人做某事desire that... (should) do sth. 渴望……(3)desirable adj . 想要的；可取的；值得拥有的单句语法填空①He has a desire ________ success though he has failed many times.②It is not easy to get a ________(desire) job that corresponds with interests. ③Anyone ________(desire) to vote must e to the meeting.④The school strongly desires that the project ___________(finish) before the end of this month.完成句子⑤In order to achieve goals, you must have ________________ so.要实现目标，你必须有实现它们的强烈愿望。

Period 4 Using Language：Listening，Speaking and WritingTeaching aims1．Enable students to express supposition and belief.2．Learn to write a passage describing a new type of robot.Teaching proceduresStep 1Lead－in1．First，ask students to look at the words below.Many of them are used to describe Claire's feelings in the story.Carry out the following tasks in pairs.alarmed embarrassed amazed awful amused surprised attracted disturbed envied impressed satisfied hurt frightened upset(1)Find as many of these words in the text as possible and underline the sentences.(2)Write a short paragraph to describe Claire using some of these words.(3)Tell a story using at least five of these words.]Sample writing：Claire is a very emotional woman who needs a good friend.She finds this friend in a robot called Tony，who comes to help her in her home.She is attracted to him because he is so handsome andsympathetic.He becomes her best friend.She is impressed by his abilities but embarrassed by her feelings for him.She is disturbed because she thinks of him as a man even though he is not but is amused that other women envy her and think they are having an affair.Claire succeeds in overcoming her sense of failure，but in doing so falls in love with Tony.His visit leaves her upset，frightened and hurt，which has replaced her sense of failure.She has been hurt by Tony because he is too nice rather than because he is not nice enough.2．Next，have a small talk about the story.(1)Why did Tony have to be rebuilt?(2)How would you feel if you had a robot like Tony in your house?Suggested answers：(1)Because you can't have women falling in love with machines.(2)Various answers are possible.Students are encouraged to speak out their feelings freely.Step 2Listening1．Molly and Kate are discussing the story “Satisfaction Guaranteed”．Read the questions and then listen to their conversation.Tick the correct boxes.Keys：2.Next，listen again and find answers to the following questions.(1)What does Kate think the difference between robots and human is?(2)How does Kate think Claire was hurting herself?(3)Why would one of the girls like a robot such as Tony living at her house?(4)What does Kate think the company's biggest mistake was?Suggested answers：(1)Robots can't feel emotion of any kind.(2)By seeing herself in a negative way.(3)She likes the idea of a handsome man whose only purpose was to please her.(4)Making the robot look so much like a real man.3．Listen to the tape again and write down the expressions of supposition and belief.Keys：错误!Step 3DiscussionStudents are asked to work in groups and imagine having a robot in their houses to do the housework. Discuss what the positive or negative effects of the situation would be.(Don't forget to use expressions of supposition and belief. Students are given five minutes. Five minutes later，ask some students to present their ideas to the whole class. Encourage every student to use his imagination，because there're no right or wrong answers，only different opinions. After students present their opinions，the teacher speaks out his or her opinion.)A samplePositive_effectsI think it is wonderful for people to have robots in their houses to do the housework. After a day's work，when people get home，they can be really relaxed with everything prepared by their robots.A robot never gets tired. Nor does it complain. Life will be very easy and comfortable.Negative_effectsMaybe people can enjoy a very comfortable life with the help of their robots.But at the same time I believe people will lose the ability to do housework. As time goes by，people cannot live well without a robot's help. I think that kind of life would be terrible.Step 4WritingStudents are asked to work in groups. First decide the purpose of the robot，then make a list of the abilities the robot has. Next draw a picture on a piece of paper and name its parts and explain what each part does. Finally write a passage describing the robot and what it can do. Show the following to help students to design their robots.Note：Not all robots have to have all six characteristics. For example，some robots don't need to manipulate things，so they have no manipulating characteristics. Some robots have more than one manifestation of a characteristic. For example，a robot may be able to sense its environment using both a vision system and sonar.Students are asked to discuss first. If there is not enough time，they should finfish it after class.Step 5HomeworkWrite a passage describing a new type of robot.Sample writing：Remote Presence RobotsRemote Presence Robots allow a medical expert to visually examine and communicate with a patient from anywhere in the world，via the machine，using wireless technology. The robot runs on a wireless system with the doctor at another location. It is controlled via a secure broadband Internet connection. The doctor (controller) and patient are able to have a real－time two－way audiovisual interaction，with the controller in full command of the robots movements，head monitor and camera. The doctor “driving”the robot can view the patient，ask questions and read patientrecords，view X－rays and test results from the console. The patient sees the doctor's image on the robots “face”．Although the robot does not physically examine the patient，it allows face－to－face contact between the doctor and patient，providing immediate access to specialists.Our robots certainly would never replace all doctors on ward rounds，but they are a communication tool which allows doctors to have direct contact with their patients if they are unable to get to them. And this may be a significant step for patient care.The rubbish collector robotThe rubbish collector is a robot about half the size of a small car. Its body is square and contains a large rubbish bin inside it. It has a camera attached to the top front of its body. Also at the front is a pair of arms. Underneath it has four wheels and six legs. With the camera it can “see” rubbish such as paper，glass，and plastic. If the surface of the ground is smooth，it runs on its wheels，and if the ground is rough，it unfolds its legs and walks.When it sees a piece of rubbish，it stops and uses its arms to pick it up and put it in its rubbish bin. However，when it sees a person，an animal or a plant，it goes around it as it is able to recognize when something is not a piece of rubbish.The company should make this robot as it would be very popular with schools. It would clean the outside grounds of the school andso give the students more time to spend on their studies. It would also be a great advantage to have at sports grounds or any other area where rubbish is dropped by the public.。

Period 6 Listening and Reading TaskTeaching aims1.Learn about robots and robots in the fight against landmines.2.Help students to learn how robots are helping human beings in clearing landmines.Teaching proceduresStep 1 Lead —inPrese nt the pictures on Page 54 and ask stude nts to tell what each robot does.(Stude nts are en couraged to speak out their opinions freely.)Step 2 Listening1.Liste n to the in terview and nu mber the pictures in the order that you hear about them.Keys：421,3.2.Liste n to the in terview aga in and fill in as much of the table as you can. Share your an swers with a part ner. Liste n once or twice more to check your an swers.Step 3 Reading task1.As we know , Robots are designed and built to do a task that is dangerous , uncomfortable , or repetitive for humans. Today we are going to read a magazine article about landmines.First, ask students to read this piece of news about landmines.Three decades of war in Cambodia have left scars in many forms throughout the country. Unfortunately , one of the most lasting legacies of the conflicts continues to claim new victims daily. Landmines, laid by the KhmerRouge, the Heng Samrin and Hun Sen regimes, the Vietnamese, the KPNLF , and the Sihanoukists litter the countryside. In most cases, even the soldiers who planted the mines did not record where they were placed. Now , Cambodia has the one of the highest rates of physical disability of any country in the world. At the curre nt rate of progress, it may take as many as 100 years to clear all the mines in Cambodia , and the UN estimates that with curre nt tech no logy , it will take n early 1100 years to clear all the mines in the world.2.Next, present the students some mine sig ns and remind students that in spite of so many warning sig ns , there are still many victims as the pictures show.(In spite of so many warning sig ns, there are still many victims.Look at the follow ingpictures.)3.Ask students to glanee through the text quickly and answer the following questions in Exercise 1 on Page 58.(1)What is the main topic of this article ? Which part of the text tells you that?(2)Who wrote the article?(3)What do the three pictures show you?(4)Where is research being done on robots that can find landmin es?(5)I n which two coun tries might the robots be used?Suggested an swers(1)The main topic is the role of robots in the fight against landmines. The title tells us that.(2)Natasha Wesley.(3)Someone using a metal detector to find landmines ；the robot that can find landmines ；some people who have lost their legs because of landmin es.(4)Chiba University (Japan).(5)Afgha nista n and Cambodia.4.Work in groups to write questions for these answers in Exercise 2.Check your work with your part ner.Suggested an swersStep 4 Discussion1.First, ask students to read the following materials.From the text we've learned how serious the situati on is. Many lives are put into dan ger. So we must do someth ing to improve the situati on. As we know , the US has n't yet committed to the Mi ne Ban Treaty. I hope you will write a letter of suggestio n to the preside nt of the US. You may refer to the text2.En courage stude nts to write a letter of suggestio n to the preside nt of the US , for the US has n't yet committed to the Mi ne Ban Treaty. In the letter you will suggest the US should stop manufacturing landmines and spend more money on solutions to clearing landmines , for example develop ing new robots to remove the landmin es.You can refer to the following material :Producing one landmine costs $3 , yet once in the ground it can cost more than $1000 to find and destroy, according to the ICBL.Over 80 per cent of the 15 000 to 20 000 landmine victims each year are civilians , and at least one in five are children , according to the International Campaign to Ban Landmines (ICBL) . The deadly legacy of landmines far outlasts the conflicts that gave rise to them. Among the most contaminated countries are Iraq , Cambodia, Afghanistan , Colombia , and Angola. If time is limited , ask students to finish it after class.Step 5 HomeworkFinish writi ng the letter to the preside nt of the US.A sample：Dear Mr.President ，I read in the newspaper that the US hasn't yet committed to the Mine Ban Treaty. I'm writing to suggest yourcountry sign on the agreement.1．Landmines kill or badly injure around 26 000 people every year. There are about 100 million landmines buried just beneath the surface of the ground in 60 countries. Among the most contaminated countries are Iraq ，Cambodia，Afghanistan ，Colombia ，and Angola. I think this is one reason why people in these countries hate the US so much.2．Producing one landmine costs $3 ，yet once in the ground it can cost more than $1000 to find and destroy ，according to the ICBL. So stop manufacturing landmines and spend more money on finding solutions to clearing the landmines. As you know ，your country has designed the most advanced robots. Why not use your advanced technology and spend more money on designing some robots to clear the landmines. If so ，it will benefit the whole world. People all over the world will think highly of you and your country. You and your country will become more influential.Japan has set a good example. They have developed robots that can be used to clear landmines. I hope your government will follow Japan's example.Thank you for reading the letter. I hope you will consider my suggestions. I believe you also hope the whole world will enjoy peace. Let's work together and make a peaceful world.Yours sincerely ，Sun Cheng。