正在消失的长城 The Missing of the Great Wall（在线收听）

 　　The Great Wall is famous as the one of the miracles in the history, it attracts the people from all around the world to witness its greatess. But according to the research, the Great Wall is missing gradually, for it suffers the damage from both nature and human being. As the environment is polluted, the acid rain often comes and destroys the buildings in the long run. What’s more, the increasing number of tourists step on the bricks, which will damage the building. More unpolited behaviors have been reported, such as people like to write down some words to remember their trip here, which disfigures the appearance of this great site. When the Great Wall disappears some day, it is the greatest pity, we are no longer have the chance to appreciate its grandness. To save this miracle, we need to behavior ourselves and protect the environment.