【正确答案】 Dear friends,
I am the chairman of the Students' Union. I' ve just received the emails from you and got the news that you would come to our university. Above all, I'd like to show our warm welcome. On behalf of our university and all the students here, I really look forward to your coming.
In order to make all of you feel at home, here are some conducive suggestions. Firstly, you' d better take some warm clothes with you because it is winter in China now and it is very cold in Beijing. Secondly, I advise you to prepare some relevant knowledge about Chinese culture for better understanding in your studies and better merging into the environment here.
I really hope you' 11 find these proposals useful. And I' m looking forward to your coming!
Yours sincerely,
Li Ming

【答案解析】 本文包含了题目要求的内容要点。首段介绍了自己和写信的目的，并代表全校学生表达了欢迎之意。第二段针对留学生的特点，从中国气候和中国文化两方面人手提出建议，建议内容实际、有意义。结尾再次表达欢迎之意。全文句式多样，词汇丰富。