你校下周將舉行英語(yǔ)周活動(dòng)。假如你是李華，你被推薦作為活動(dòng)的發(fā)言人。請(qǐng)你根據(jù)以下提示，寫(xiě)一篇英語(yǔ)演講稿，向同學(xué)介紹人類歷史上一項(xiàng)重大發(fā)明——電腦。
要點(diǎn)：
（1）電腦是世界上最偉大的發(fā)明之一，它改變了世界和人們的生活；
（2）優(yōu)點(diǎn)：電腦計(jì)算速度比我們快，而且?guī)缀鯊牟怀鲥e(cuò)；電腦可以做重要的工作，比如開(kāi)飛機(jī)等；
（3）缺點(diǎn)：長(zhǎng)時(shí)間使用電腦對(duì)眼睛不好……（至少補(bǔ)充一點(diǎn)）；
（4）你的看法。
要求：
（1）0詞左右。開(kāi)頭和結(jié)尾已給出，不計(jì)入總詞數(shù)內(nèi)；
（2）文中不得出現(xiàn)真實(shí)姓名和校名；
（3）可適當(dāng)增加細(xì)節(jié)，以使條理清楚、行文連貫；
（4）標(biāo)點(diǎn)正確，書(shū)面整潔。
參考詞匯：advantage 優(yōu)點(diǎn) disadvantage 缺點(diǎn)
   Hello everyone!I'm Li Hua.It's my great honor to introduce an important invention to you.______________
  That's all!Thank you!

【考點(diǎn)】說(shuō)明文；科普知識(shí)與現(xiàn)代技術(shù)．

【答案】    Hello，everyone!I'm Li Hua.It's my great honor to introduce an important invention to you.
   The computer is one of the greatest inventions in the world.They have changed the world and played an important role in our daily life.People can shop online if they don't want to go out.What's more，they can help solve problems and make students learn more.Computers calculate faster than we do，and they almost never make mistakes.Computers can do important work，such as flying planes and so on.Students can watch English videos and learn spoken English.But there are some disadvantages.On the one hand，using computer for a long time is bad for eyes.On the other hand，bad information on the Internet can affect students' study easily.
   In my opinion，it is important for us to use computers properly.Parents can manage students' online time and content more.
   That's all!Thank you!