隨著科技的進步，越來越多的青少年擁有了自己的智能手機。假如你是八年級一班 的班長李華，你打算發表一篇關于使用智能手機的演講。請你根據提示內容，寫一篇演講稿。
1.使用情況：在一班，80%的同學有智能手機，50%的同學每周花超過2小時看短視頻
2.過于依賴手機的危害：①不利于身體健康②……
3.你的建議：①控制玩手機的時間②……
4.提出呼吁：希望大家合理使用智能手機
寫作要求：
1.文章必須包含所有提示內容，并可作適當發揮；
2.表達清楚，語句通順，意思連貫，書面規范；
3.文中不得出現真實姓名和校名；
4.字數要求80詞左右（開頭和結尾已給出，不計入總詞數）。
參考詞匯：short video 短視頻

    Good afternoon，everyone.Thank you for listening to my speech.Today I am going to talk about the problem of using smart phones in our class._________
    Thank you for your time.

【考點】演講稿；日常生活．

【答案】Good afternoon，everyone.Thank you for listening to my speech.Today I am going to talk about the problem of using smart phones in our class.In our class，more and more students go to school with mobile phones.80% of students have smart phones，and 50% of students spend more than 2 hours a week watching short videos.
However，there are some problems with using mobile phones，one of which is that the ring of phones can disturb teachers and students in the classroom.This is not good for our health，especially for our eyes.Some students prefer to surf the Internet to search for the answer rather than think it by themselves even when they do their homework.Some use the smart phone when they crossing the street.As we all know，thesmart-phone can store a great deal of information，which makes our memory worseand worse.They can't listen to teachers in class carefully.
I think we should control the time of playing mobile phones.We should do more outdoor sports.We should communicate more with friends and parents.We hope that we can use smart phones rationally and not rely on them.
Thank you for your time.