有人说：“善待环境就是善待自己。”这是因为（     ）

①人类是大自 然的产物，是大自然的一部分

②人类的生存和发展离不开丰富的自然资源和良好的自然环境

③保护人类就是保护人类的生存环境

④人类对环境的污染和破坏，会受到自然的“无情报复”，使人类自己的生存面临危机。

阅读理解

　　Lang Lang is a famous Chinese pianist. He was born in 1982 in Shenyang. He showed his talent(天赋)for playing the piano when he was two. He began to take piano lessons at the age of 3. At the age of 5, he won the Shenyang Piano Competition. When he was 11, he won the first prize at the Fourth International Young Pianists Competition.

    He began his study at Curtis Institute(学院)in America when he was 15. He became the first Chinese student at the institute. During his study there he made great progress and became a top pianist. On August 14th, 1999, the great Andre Watts was ill so Lang Lang played at concert instead of him and he was successful. Then he became famous all over the world.

    In August of 2008, more than 5 billion people watched Lang Lang's performance at the opening ceremony(开幕式)of the Beijing Olympic Games. He also played at the opening ceremony of the Shanghai Expo(世博会).

文中有“常著文章自娱，颇示己志”的句子，请你结合五柳先生的《桃花源记》说说他的“志”是什么。