Question

书面表达。

     假设一美国学生访问团到你校参观访问，你代表（on behalf of）校方致辞，内容如下：
     1.  对接受邀请表示感谢，对来访表示欢迎；
     2. 你校的简介；
     3. 希望中美学生交流学习经验，特别是怎样学习英语；
     4. 希望美方在访问期间过得愉快。
     ___________________________________________________________________________
______________________________________________________________________________

Answer 1

One possible version:
Ladies and gentleman,
     First of all, on behalf of all the members of our school, I'd like to express our heartfelt thanks to you for
your accepting our invitation and warmly welcome to our schoo1. 
     Our school is one of the most famous high schools in Yunnan,with the history of over 90 years. Every
year about 70％of the graduates are admitted to the first class universities, such as Beijing University,
TsingHua Uiversity and so on.
     I am sure it 15 a good chance for us to exchange experience in our study with the American students,
and we hope our American friends will give us some advice on how to learn English well.
     We hope you will enjoy the visit to our school.
     Thank you.