高二选修7Unit2Robots-ListeningandReadingtask.ppt

Reading task,ROBOTS IN THE FIGHT AGAINST LANDMINES (Page57),【背景】,据总参谋部编印的地雷议定书宣传教育提纲介绍，目前世界上有68个国家仍埋有65001.1亿枚地雷，每年造成约2.6万人伤亡。今年是我国加入联合国通过的修正的地雷议定书10年，作为一个爱好和平的国家，我国多年来一直在为消除雷患作出积极的努力，并用自行研制的装备创造了“速度最快、质量最高、伤亡最小”等世界扫雷奇迹。,扫雷机器人主要用于人道主义扫雷行动中探测地雷及未爆 药，具有视频监测和远程实时传输功能，可实现 20mm未知高度变化路面的稳定行走和快速通过，还具有 翻越200mm高度的垂直障碍物和上下楼梯、进出狭窄通道 等功能。 记者在现场看到，该机器人采用无线可视遥控操纵方 式，探测高度为离地10-20mm；探测最大速度为平原开阔 地100m/h；左右摆动探测范围各60。机器人通过摄像头 即时采集图像信号，通过无线视频传输模块提供给遥控部分。 当探雷器探测到有雷信息后，会自动传输给云台控制器做前 端处理，并停机定位、喷洒标识液、响报警铃、亮警示灯 等，同时将有雷信号发送给机器人主控制器。此设备适应 在-5C+50C，具有较好的防潮防水性能。在植被深不 超过10cm的平原、丘陵、沙漠地，坡度不大于25的地域 能够自如作业。机器人最多连续工作16小时，控制器最大 最多连续工作16小时。,我赴黎巴嫩维和工兵营官兵使用的扫雷机器人,来自全军的五十多名地雷专家和联合国有关人士，近日对云南扫雷部队两次边境大扫雷的情况进行认真考察论证后发现，以云南扫雷部队为主摸索出的二十多种科学扫雷方法和革新出的九种扫雷新装备，在大面积扫雷中运用后，与世界其它同类雷场相比，具有速度最快-作业官兵日均扫除雷区面积达六百多平方米，人均排除地雷等爆炸物九百多枚，扫雷工效是世界同类雷场作业的十倍；质量最好-所扫雷障的二百多平方公里土地，移交地方时后至今未发现一起遗留地雷引起的人员伤亡事故；伤亡最小-参加两次大扫雷的千余名官兵，在山高坡陡、雷种复杂、爆炸物交织混乱的亚热带山岳丛林地复合雷场与死神打交道千余天，创造了仅有一人牺牲的“世界大面积扫雷亡人最低的纪录”，受伤人数也大大低于世界其它同类作业现场。,中越边境七年大扫雷创造世界奇迹,中越边境大扫雷是本世纪末世界上规模最大的一次扫雷行动。按照中国国务院、中央军委的部署，从一九九二年开始，云南、广西边防扫雷部队七年间两次征战雷场，共扫除地雷二百二十多万枚，销毁其它爆炸物四百多吨，完善永久性封围雷场数十平方公里，中越边境中方一侧的雷患已基本消除。今天，人们看到，从云南的边陲新城河口到广西的友谊关，昔日的雷场已崛起六个国家级、十三个省级边贸口岸和三十多个边贸互市点；二百九十多条边境通道的开通，彻底改变了扫雷前中越边境没有一条畅通的陆地通道的局面，为边疆的经济发展和对外开放创造了有利条件。,军用排雷机器人,军用排雷机器人是一种装有探雷器和使地雷失效装置的机器人，主要用于协助攻击分队在各种雷场中开辟通路，并进行标示。排雷(弹)机器人使用不仅可以加快扫雷破障的速度，而且还大大降低了人员的伤亡。如美国研制的交通警察战场机器人，它安装了多种传感器，可用于探测建筑物、掩体、隧道等处的地雷；蜜蜂式控雷器则具有较快的飞行速度，可以迅速而准确地发现地雷的位置，并通过自身携带的装置对地雷进行引爆。,马永信：中国士兵创造世界扫雷奇迹,新华网消息 据解放军报报道，世界扫雷史记下了一个中国士兵的传奇：作业200余天，排除地雷3040余枚、爆炸物1200多件，排雷进度是曾被公认为世界最成功的“阿富汗扫雷行动”的单兵排雷进度的292倍！而且排雷数量也堪称“世界之最”！他所带的班排雷1 4万余枚，无一伤亡，所扫过雷的地方未发现雷患，创造了世界同类雷场“质量最优、伤亡为零”的奇迹。他就是云南扫雷部队二队班长马永信。不久前，成都军区召开命名大会，授予他“排雷英雄”荣誉称号。,中越边境大扫雷中扫除的部分地雷 资料,Three decades（十年）of war in Cambodia柬埔寨亚洲 have left scars in many forms throughout the country. Unfortunately, one of the most lasting legacies（传代物）of the conflicts continues to claim new victims daily.,Read this piece of news about landmines.,In most cases, even the soldiers who planted the mines did not record where they were placed. Now, Cambodia has one of the highest rates of physical disability of any countries 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 1,100 years to clear all the mines in the world.,This is the situation in Cambodia.,Here and there are the mine signs.,In spite of so many warning signs, there are still many victims.,Robots in the fight against landmines.,Pre-reading,What is the main topic of the article? Which part of the text tells you that? The role of robots in the fight against landmines.The title. 2. Who wrote the article? _Natasha Wesley.,4. Where is research being done on robots that can find landmines? _Chiba千叶University(Japan). 5. In which two countries might the robots be used? _Afghanistan and Cambodia.,Reading Task ( P 57 ),Robots in the Fight against Landmines,Where do you probably find the passage ? -We probably find the passage in a magazine. It is a magazine article. 2. What is the typical structure of this kind of passage ? -The structure of this kind of passage is as follows : it has a title; the first paragraph runs across the page and is in bold; the main text is in two columns.,3. Who wrote the passage ? - It was written by Natasha Wesley. 4. What is the purpose of the first paragraph ? -The first paragraph introduces the topic.,Divide the paragraphs in the two columns into three parts and tell what each part is about. Part 1- It is slow and dangerous work to remove landmines by hand. Part 2- Scientists have been working on technological solutions to the landmines problem and have invented a robot to remove landmines,Part 3- It is better for countries to stop the manufacture and use of landmines. What do the three pictures show you ? Picture 1 - It shows soldiers removing landmines by hand. Picture 2 - It shows what the robot invented to do the work look like. Picture 3 - It is a picture of some survivors who escaped being killed in the explosions of landmines.,Learn to guess the meanings of the new words. 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. - who happen to step on them - Landmines are something buried in the ground that can kill or injure people when stepped on.,Careful reading,Answer key for Exercise 2(pag58):,Introduction: the damage landmines,Most victims are innocent people,Suggested answers to Exercise3(p58),The problem of landmines,Robots can help find traditional mines,Each year 100,00 removed Each year 2,000,000 buried Difficult and dangerous to remove,Much safer in the hunt for landmines Faster at finding landmines Research at Chiba University,Robots can find plastic