Long long ago, there were many trees on the mountains. In order to build houses and grow crops, people cut down as many trees as they could. Soon all the trees have gone. The green hills have changed into wasteland. As a result, sandstorms struck us from time to time. A lot of rich land has changed into desert, leaving only sand. We suffered a lot from this. Now people have realized this and they go to the hill to plant trees. In order to stop the wind from blowing the earth away, we have planted a lot of trees. We still need to work harder to protect the environment.
本题根据图片写一篇书面表达。写作的内容包括很久以前由于人们滥砍伐树木，载满树树木的山变成荒地，变成沙漠，人们意识到问题的严重性，于是为了阻止沙漠化，人们栽树，我们需要更加努力来保护我们的环境，在写作时应注意符合图片的内容，同时应注意语言的准确性和连贯性。