通信的三要素是什么？
题型：问答题 简答题
问题：
通信的三要素是什么？
题型：问答题 简答题
开放作文。
请根据下面提示，写一篇短文。词数不少于50。
In your spoken English class, your teacher shows you the following picture. You are asked to describe
the picture and explain how you understand it.
提示词：放大镜 magnifying glass
____________________________________________________________________________________
_______________________________________________________________________________________
_______________________________________________________________________________________