Unit 4 Cyberspace -Lesson 1课件（北师大版必修2）.pptVIP

Computers and the Internet affect our lives. More Connection In 1983, there were only 200 computers connected to the Internet but now there are around 50 million. The Internet has grown rapidly. We see a huge / rapid growth in the Internet. 文件 [F] 编辑[E] 插入[I] 格式 [O] 工具[T] 帮助[H] the use of computers to make situations feel and look real People can get various experiences in virtual reality. e.g. virtual school, virtual tourism, … BACK 文件 [F] 编辑[E] 插入[I] 格式 [O] 工具[T] 帮助[H] chaos A terrible situation in which everything goes wrong. Yesterday my computer was attacked by a virus. Everything seemed to be in chaos. BACK 文件 [F] 编辑[E] 插入[I] 格式 [O] 工具[T] 帮助[H] Cyberspace terrorists criminals hackers attack cause crime cause chaos make planes and trains crash information disappear More attacks BACK 文件 [F] 编辑[E] 插入[I] 格式 [O] 工具[T] 帮助[H] terrorist someone who does terrible things to harm countries and people The plane driven by terrorists crashed into the twin towers. 文件 [F] 编辑[E] 插入[I] 格式 [O] 工具[T] 帮助[H] activities that are against the law crime criminal BACK * Imagine life in the next twenty years. How do you think technology will change our life? Step1 Lead-in which do you think the title will mention? the internet artificial human time travel robots global warming virtual reality Check your guess by reading the text. the internet artificial human time travel robots global warming virtual reality Step 2 Fast-reading Read the article again and match the vocabulary from the text in the box below with the definitions hacker, chaos, terrorist, the net (Internet) virtual reality, crash Match them! terrorist Virtual reality chao