请阅读下面短文,并按照要求用英语写一篇 150 词左右的文章。
One day, a poor boy who was selling goods door to door to pay for school was hungry. So he decided to beg for a meal at the next house. A young woman opened the door. Instead of a meal, he asked for a drink of water. However, she brought him a large glass of milk．
Years later the young woman got ill, so her family sent her to hospital in the big city, where specialists can be called in to study her rare disease．Dr Howard Kelly, now famous, was called in for the consultation. When he went in to see her, He recognized her at once. He was determined to do his best to save her life.
After a long struggle, the battle was won. Dr Kelly looked at the bill and wrote something on the side, and then it was sent to her room. She was afraid to open it because she was positive that it would take the rest of her life to pay it off．Finally she looked, and the note on the side of the bill caught her attention．She read these words: “Paid in full with a glass of milk.”
[写作内容]
1. 用约30 个单词概括上文的主要内容；
2. 用约120 个单词就“帮助别人就是帮助自己”这一话题发表自己的看法，内容包括：
(1)文中主人公是如何诠释这一道理的；
(2)举例说明这个道理；
(3)如果以后碰到需要帮助的人，你将如何做。
[写作要求]
1. 阐述观点或提供论据时,不能直接引用原文语句;
2. 作文中不能出现真实姓名和学校名称;
3. 不必写标题。
[评分标准]
内容完整,语言规范,语篇连贯,词数适当。