Senior High English Book 2Unit 4 Cyberspace Lesson 3 Virtual RealityⅠ. Preparations before class ( 课前准备 ) Task 1. Have a try (牛刀小试) 请完成同步作业 Page 11 Exercise I---词汇填空Task 2: Have a competition (赛一赛) What is virtual reality?Definition: ___________________________________________________________________Task 3: Cultural background (文化背景) 什么是虚拟现实技术呢？简单地说, 就是人们利用计算机生成一个逼真的三维虚拟环境, 通过自然技能使用传感设备与之相互作用的新技术。它与传统的模拟技术完全不同, 是将模拟环境、视景系统和仿真系统合三为一, 并利用头盔显示器、图形眼镜、数据服、立体声耳机、数据手套及脚踏板等传感装置, 把操作者与计算机生成的三维虚拟环境连结在一起。操作者通过传感器装置与虚 拟环境交互作用, 可获得视觉、听觉、触觉等多种感知, 并按照自己的意愿去改变“不随心”的虚拟环境。比如, 计算机虚拟的环境是一座楼房, 内有各种设备、物品，操作者会如同身临其境一样, 可以通过各种传感装置在屋内行走查 看、开门关门、搬动物品; 对房屋设计上的不满意之处, 还可随意改动。Ⅱ. Activities in Class ( 课堂活动 ) Task 1.Rewarding time (比一比)Task 2.Understand the text (课文理解) 1. What’s the main idea of the text?A. The weekend life of Cathy and Tom. B. The life that students hope for living in the futureC. The imagination of virtual reality’s holiday and study situationD. Imagination of how to live in the future2. Which of the following is true? A. In the virtual reality holiday, we wouldn’t experience something directly.B. Tome will go camping with his families this weekend.C. Tom will send the website address to Cathy when he gets to school.D. It’s not hard for us to imagine the virtual reality studying situation.3. From the text, we can infer that________ . A. Cathy has lots of work to do this weekend.B. In the future, we will not have to go to our destinations in the flesh a...
