水是生命的源泉。大自然中,无论动物、植物,包括我们人类,水都是最重要的组成部分。同学们知道吗?水约占人体组织的70%。由此可见,水对于人类的重要性。然而,淡水资源一直是地球上缺乏的资源,因此,节约用水对于我们的生活意义十分重大。下面,我们仔细观察一下图 Water is the source of life. Nature, no matter animals, plants, including our humanity, water is the most important part. Do students know? Water accounts for about 70% of human tissue. This shows that the importance of water for human beings. However, as freshwater resources have always been a scarce resource on Earth, water conservation is of great importance to our lives. Below, we look closely at the figure