书面表达：25分

A recent survey shows that the health of the students in our school has been going from bad to worse in the past three years. The number of nearsighted students has increased from 78.2% in 2002 to 92.5% in 2005, while that of overweight, from 36% to 52.4%. Nearly 10% more students lack sleep because of more homework to do. Besides, over 15% more students become mentally unhealthy.

To improve students’ health, we call for less homework. Only in this way can students get plenty of sleep and meanwhile prevent them from being nearsighted. Proper diets and exercise should also be paid attention to so that they won’t easily put on weight. With their heavy burdens removed, students can then keep in normal mental health.

下列图表反映的是我市2004与2007年学生健康状况调查的部分数据。请你用英文为某报社写一份报告，反映该市三年间学生健康状况的变化情况，分析其原因并提出你自己的看法。

注意：1．报告包括必须图表中所有的内容

              2．词数：120左右。开头已给出（不记入总词数）