假设你是李明， 你的美国朋友杰克听说你校正在开展研究性学习，来信询问有关情况，请你写一封信，谈一谈开展研究性学习前后，你的学习情况的变化。
注意：
1. 用书信格式。
2. 词数：100左右
3. 生词：研究性学习exploring study ，上网surf the internet。
过去：
     老师讲解知识点，学生听讲，记笔记。完成大量的作业。
现在：
     老师提出问题，学生互相讨论或学生自己提出问题自己讨论解决。丰富多彩的课外活动，如读自己感兴趣的书籍，去图书馆或上网查资料。

参考范文

Dear Jack,

     How nice to hear from you again. You want to know what is going on in our school. In short, things have been improving since the school began to carry out exploring study. In the past, the teachers always kept on explaining the points in class. We students just listened and took notes. But now we often discuss and try to solve the problems raised by the teachers or ourselves. After class, we enjoyed different kinds of activities instead of doing endless homework. For example, we can read what we are interested in. We can go to the library or surf the Internet for various kinds of information.

     In a word, we are now masters of study, and we are happy.
Best wishes.
                              
Yours,
Li Ming