请你根据所给提示，用英语写一篇短文，介绍微信（ and people are beginning to use Wechat and some have even become addicted to it.However WeChat has both advantages and disadvantages.WeChat really shortens the distance between people.No matter where we are we can easily contact our friends.Besides we can find friends to whom we can tell our secrets which we don’t want to hold back from our families to know.However it also has disadvantages.First some information offered in WeChat is false and it may result in people being cheated.Second some people spend too much time on WeChat greatly influencing their normal life.As far as I am concerned WeChat is convenient but we should use it properly.
微信公众平台群发怎样没有字数限制？ 一直没有字数限制啊，你截个图来看看，到底怎么回事，这打几个字说不明白.
一个微信群里有若干个好友，每个好友分别给群里其他好友发送一条信息，这样共发送870条信息，设微信群里有x个好友，则根据题意可列方程为___． 设微信群里有x个好友，根据题意可得：x（x-1）=870．故答案为：x（x-1）=870．
关于学生写给补习班老师的感谢信 感谢信尊敬的补习班老师：您好！非常感谢您在这段时间里对我们的殷切教诲，每天回去我们都要花很多很多的时间去重新认真地学习复习今天所讲的课，从而加强巩固知识，让我们深刻地体会到学而时习，不亦说乎；温故而知新，可以为师矣。老师不仅在学业上对我们负责，而且更在为人作风上教导我们。每天都会在课堂上用一点点时间对我们进行各种做人的教育。记得有次某某同学因为某事迟到了您的课（太不.
请你运用所学的知识回答问题。
