Our school has made a survey about how long middle school students can fix their attention in class during each period. The result shows that only 40% of the students can draw their attention to their class, while the rest of them can not concentrate on the lesson. 30% of the students think the problem is caused by all kinds of noises in the classroom; the other part of students consider lack of sleep and tiredness as the major causes.

Therefore, we advise that the classroom be bright and the air inside stay fresh. As for students, they should try their best to be active in class in order not to be disturbed by others. During the breaks, they can take some exercise or have a little rest in the classroom. Also, it is necessary to balance their diet. Talking to the classmates may also help them relax. Keep in mind that all work and no play make you achieve less in your studies.

题目分析：题目要求就“中学生课堂注意力”调查结果写一篇作文，介绍调查的结果，给出改善的建议。写作要点以表格的形式呈现，主要从注意力集中情况、不集中的原因和建议三方面着手写作。使用第一人称客观叙述调查结果，注意人称、拼写和标点的准确使用。作文中不能出现语法、时态错误。

【亮点说明】范文用较大的篇幅介绍了调查结果，使用了较多的短语和固定搭配：draw their attention to；concentrate on；consider...as；lack of；As for；try their best to；in order not to；take some exercise；Keep in mind等，使作文内容变得充实；

范文注意使用Therefore, Also等衔接上下文和前后句，使作文显得紧凑，逻辑性强；

范文还使用了一些语法知识：虚拟语气we advise that the classroom be bright；固定句型it is necessary to balance their diet；动名词作主语Talking to the classmates may also help them relax；宾语从句that all work and no play make you achieve less in your studies等，语法知识掌握得比较牢固。