Good morning classmates,It's my great honor to stand here to give a lectrue on how the earth come into being. The process is divided into three steps.The first was about five billion years ago.At t...
求高中英语演讲稿,主题是地球的形成,拜托各位热心人士%>_
Good morning classmates,It's my great honor to stand here to give a lectrue on how the earth come into being. The process is divided into three steps.The first was about five billion years ago.At t...