阅读下面这首唐诗，完成小题。

赠阙下裴舍人①

钱起

                                                                            二月黄鹂飞上林，春城紫禁②晓阴阴。

                                                                            长乐钟声花外尽，龙池③柳色雨中深。

                                                                            阳和④不散穷途恨，宵汉常悬捧日心。

                                                                            献赋十年犹未遇，羞将白发对华簪。

【注】此诗为作者落第期间所作，献给在朝姓裴的中书舍人。中书舍人：官名，唐时掌制诰。②紫禁：指皇宫。③龙池：指宫中之池。④阳和：仲春二月。

注意：1.每处错误及其修改均仅限一词2.只允许修改10处，多者（从第11处起）不计分。

    I am interested at swimming very much. At the first, I went swimming just to keep health. Now my dream was to swim for my country in the Olympics. Though practicing in the pool is very bored, I still work very hard in order to realize my dream. Because my hard work, I have already come first in much important competitions. In the competitions, I've made lot of friends and we're very close. It's much easier to have friends which are swimmers because they also have to get up early to practice like you and they understand this kind of life.

用分子的知识解释下列现象，正确的是（　　）