阅读下面的材料，完成小题
写字和阅读，写作一样，是语文学习的重要内容。为帮助同学们了解写硬笔字的知识，提高写硬笔字的水平，某校开展了一次“走进硬笔书法”主题活动。
He is organized and is often . I hope he will have more at his business.
下列关于生态系统稳态的表述正确的是( )
