1、 Do you want to know something about the history of
weather?你想理解某些有关天气旳历史吗? Don't look at the sky.
Don't look for old weather reports. Looking at the tree rings is
more
电大、各类远程网络教育统考大学英语B、计算机应用基础统考辅导
全套题库,精心整顿并归类完毕,全中文翻译,视频教程讲解,一
次性通过,唯一
important. Some weather reports go back only one century,but
some trees can show us an exact record of the weather even
further back.
It's clear that a tree would grow best in a climate with lots of
sunlight and rainfall. It is also expected that little sunlight or
rainfall would limit the growth of a tree. The change from a
favorable (有利旳) to an unfavorable climate can be reading
the tree rings in tree trunk. To find out the weather of ten years
ago,count the rings of a tree trunk from the outside to the inside.