目前為止，我國環境整體在惡化，局部在改善，但治理能力遠遠趕不上破壞速度，生態赤字逐漸擴大。地球上的樹木一棵棵被人們殘忍破壞，植樹造林迫在眉睫，保護環境成為首要任務。樹木在我們的生活中扮演著不可缺少的角色，而且它們對人類有著重要的意義。
你校英文報將以"三月十二日中國植樹節（National Tree Planting Day）"為主題，舉行征文比賽。請寫一篇短文投稿，內容包括：
1）簡要介紹植樹節；
2）說明樹木的重要性；
3）呼吁履行植樹義務。
注意：
1）寫作詞數應為80左右；
2）請按如下格式在答題卡的相應位置作答。
Planting Trees for our Future        

【考點】說明文；環境保護．

【答案】Planting Trees for our Future   National Tree Planting Day is held on March 12 every year，when millions of volunteers，both young and old，plant trees in schools，parks，city gardens and the countrysides.
  As we all know，trees are very important not only to the environment but also to humans.From improving air quality to fighting against climate change，trees play a vital role.In addition，they provide habitats and food for many species of wildlife.
  Therefore，we each should do our bit by participating in voluntary tree planting activity.With perseverance and accumulated efforts，we will be able to make the environment better.