Use Internet or Library

a. 根据下图描述南京某高校学生利用英特网和图书馆进行学习的变化情况。

b. 你对这种变化的评论

          表1                                                     表2

参考范文：

As is displayed in the two charts above, there is a sharp change in (变化)the students’ use of library and Internet(事件)from 2002 to 2006 (时间)in one university of Nanjing(地点)(第一句话通常进行总述). Specifically，(具体描述)The average hours for use of library for study per week in 2002 was about twenty hours while it declines to about 12 hours per week in 2006. By contrast, there is a fast increase in the average hours for students’ use of Internet for study at the same period; the average hours increase from about seven hours to about eighteen hours.

Certainly, the large use of computers and Internet has contributed in a large part to the change. The wide spread of Internet has drawn a large number of students from libraries to computers for their study. With the aid of computers and Internet, students can now easily get access to a variety of study materials. (评论：positive effects)

While the use of Internet has brought great convenience to students it also highlights the problem of study efficiency. Many students, when searching information and materials on Internet, can not truly concentrate on their study. They use Internet to conduct on-line-chat, play computer games, or even worse, to visit those unfriendly websites full of sex and violence. Before all these problems are solved, I believe, library would still be the best place for study. (评论：negative effects)