下列属于非可再生资源的是（　　）

美丽的背后

    在非洲的戈壁滩上，有一种叫依米的小花，它的花期很短，仅仅两天的工夫，便随母株一起香消玉殒。

    然而谁能想象，依米花为了这两天短暂的开放，付出了多少艰辛和努力？

    在戈壁滩上，根系庞大的植物才能生长，而依米花的根却只有一条，蜿蜓盘曲着插入地底深处，通常它要花费五年时间来完成根茎的穿插工作，然后，一点一点地积蓄养分，在第六年春天，才在地面吐绿绽翠，开出一朵小小的四色鲜花。

    为了这朵仅仅开放两天的四色小花，依米花母株付出了它一生六年的光阴。

你通过对上述材料的探究，得出一个什么样的结论？

    The sun, the moon and the stars are all in the sky. We see the sun in the day. We see the moon and the stars at night. The sun is a ball. It is bigger than the moon. The sun has a family. It is the biggest in the family. The moon is a ball, too. It is much smaller than the sun. It is smaller than the stars. The light on the moon comes from the sun. The stars look smaller than the sun and the moon. But most of the stars are bigger than the sun. They are very far away from us, so they look small. All day the stars are in the sky. But the light from the sun is too bright. We cannot see the stars in the day.