高二选修7Unit2Robots_ListeningandReadingtask.pptVIP

Reading task;;【背景】;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-5°C～+50°C，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1～6小时，控制器最大 最多连续工作1～6小时。;;;中越边境七年大扫雷创造世界奇迹;军用排雷机器人;马永信：中国士兵创造世界扫雷奇迹 ;; 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. ; 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;;Reading Task ( P 57 );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 sho