For this part, you are allowed 30 minutes to write a composition on the influence of the I

nternet on teenagers according to the diagram given below about the average time spent by undergraduates on the Internet every week in the past several years. You should write at least 120 words following the outline given below in Chinese:

1. 说明图中所表示出的现象。

2．分析出现该现象的原因。

3．说明近年来青少年在网络运用方面存在的问题，并提出相应的对策。