【正确答案】 Dear Sir or Madam,
As an enthusiastic reader, I am writing to share some of my suggestions with the hope of making some improvement.
I have found that there are a great number of magazines out of date here. Many times it is difficult for me to find the latest reading materials I need badly. It will help us a lot if you can introduce some new journals, which will bring fresh air to the library. Meanwhile, since the books are distributed everywhere, we can introduce a computer information searching system so as to give us effective results and save our precious time.
Thank you for your reading and I am looking forward to new changes soon.
Sincerely Yours,
Li Ming

【答案解析】 本文围绕三段式展开，第一段开门见山，直奔主题，点明写信目的；第二段委婉地指出了图书馆现存问题带来的不便之处，并提出了相应的改进措施；第三段礼貌地表达出期望尽快看到新的变化。全文结构紧凑，合情合理。