假如几天前你的同学从某超市买回食品请同学吃，他们吃后食物中毒，肚子痛，被送往医院治疗后脱险。请给报社写一封信描述他们食物中毒及脱险的经过，呼吁社会重视食品安全问题。
词数：80-120词
内容要点：
1．食品安全问题 2．共食买回食品 3．中毒、肚子痛
4．送医院治疗 5．脱险 6．全社会重视食品安全
参考范文：
Dear editor，
I'm writing to tell you something about the problem of food safety.
A couple of days ago，one of my classmates bought a bag of food from a supermarket. Some roommates were invited to enjoy the food. Unfortunately，after finishing it，all of them got poisoned and had stomachaches with their faces pale. They were quickly sent to a nearby hospital. A doctor examined them and gave them some medicine. They were out of danger soon after taking the medicine.
This accident made me realize the seriousness of the food safety problem. I sincerely hope that the whole society pay much more attention to food safety.
Yours，
Li Hua