Trees have always held much attraction for people. They are the 1 and biggest life-forms on our planet and one of the most beautiful. As a direct 2with thousands of years of history, trees appear in many religions and have 3 artists over the years.
When I was a child I 4a science fiction story that made me think about trees in a new way. In the story, 5 from an advanced civilization come to our planet and their spaceship 6in the middle of a forest. The aliens (外星人) have a long 7with the trees of the forest and then leave, 8to think that the inhabitants (居民) of Earth are noble, intelligent and peaceful.
Trees 9a lot about being part of a community and how cooperation is better for a society than 10. Scientists are only just beginning to understand how it all 11, but we now know that trees growing together share all of the available resources (资源) with each other. So, strong trees in a good 12 will share food and water with 13 trees that receive less sunlight. By 14, a community of trees makes itself stronger. The 15of giant redwood trees, for example, grow together under the ground. It's as if they are 16hands. This means that they are 17stronger when there are heavy winds or floods.
We all acknowledge that trees are 18 for the environment and the survival of our 19. Perhaps they have even more to 20 us in the future.
