10月27日（星期六），你和同学参观了清华大学，请根据下列内容用英语写篇日记。内容应包括:老教授的热情接待, 参观了图书馆、实验楼和校园等。可以适当增减细节。
Saturday October 27, 2012 Fine
Today we visited Qinghua University. Early in the morning we arrived at the gate of Qinghua University, where an old professor gave us a warm welcome. The professor showed us around and explained many things to us enthusiastically. First we went to the library. We saw many, many books and quite a number of students were absorbed in reading. Then we visited the lab building. On the campus, we found here and there students studying under the trees. Hie old professor gave us a lecture in the afternoon. Time passed quickly. Before we knew it, it was time for us to say good-bye.
