在茫茫宇宙中,曾有一个美丽的星球,那就是地球,地球像一位慈祥的母亲,孕育了数不清的生灵,然而这位母亲并不开心,因为,在这个星球上,山已经不是青山,水已经不是碧水,很多工厂的烟囱里不时地冒出团团黑烟,小鸟们都被迫离开了家园;往日清澈见底的小河变得又黑又臭,鱼儿都无法生存下去;在“嘎吱”、“嘎吱”的电锯声中,一棵棵苍翠挺拔的大树倒下了。 In the boundless universe, there was a beautiful planet, Earth, the earth like a benevolent mother, which gave birth to innumerable creatures, but the mother was not happy because on this planet, the mountain was no longer Castle Peak, the water is not clear water, smoke from time to time smoke out of many factory chimneys, the birds were forced to leave their homes; past the crystal clear of the river has become dark and smelly, the fish can not survive; In the “crunch ”, “crunch ” electric saw sound, a tree lush green tree fell.