Writing 4 　［2010年上海市高三英语二模（徐汇区）］下图是某高中2014年与2016年学生健康状况调查数据图。请简要介绍一下学生健康的变化情况，分析其原因并提出相应的改进措施。

高分范文2

A survey has been conducted in a senior high school as to students' health conditions．As can be seen from the chart，87.5% of students in 2016 are nearsighted while only 78.2% of students were nearsighted in 2014．In addition，the percentage of students who are overweight，lacking of sleep and mentally unhealthy has increased by 16.4%，9.6% and 15.5%．So students' poorer health has been a serious problem we have to face．

There are several reasons for the phenomenon．Firstly，smart phones and computers are more and more popular nowadays．They are so interesting that a lot of students are addicted to them and have to reduce their time to take physical exercise，which contributes to their poor health．Secondly，the competition is very fierce and students are enduring heavier stress．So many difficulties and failures make them feel awful，then their health fails．

So it's high time that we figured out some effective ways to solve the problem．I think，the time spent on smart phones and computers should be strictly controlled，and students should only sometimes use them just for learning and news instead of unlimited relaxation．And then they must go out to exercise more often．Moreover，parents and teachers should communicate with students more to relieve their stress and remove their mental troubles．Besides，students themselves should be more aware of the importance of health so as to exercise themselves to improve health consciously．

If they can do as above，I think students' health will become better and better，and will be no longer a serious problem．