【正确答案】 Dear Sir/Madam,
I am a second year student with a major in maths and I am writing to apply for a new student ID card.
I lost the old one when I was studying in the library yesterday evening. I left my wallet on the library desk when I went to the restroom and it was stolen by a thief. It is very inconvenient without the ID card to live on campus as the card is required at the entry of many college facilities.
I indeed wish that I could have a new card before my old one is found, if possible. I am sorry for any inconvenience that might cause you. I do appreciate your help and look forward to your early reply.
Yours sincerely,
Li Ming

【答案解析】本文要求考生给校方写一封信，申请一张新校园卡，文章内容安排如下：
第一段自我介绍并提出申请新校园卡的请求。
第二段说明申请原因。
第三段表达愿望和感谢，并期望回信。