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　　根据最近的一则报道，我国中小学生的书包超重现象十分严重。小学生书包平均重量为3.5公斤，而初中生则为5.5公斤。请根据这一现象，按照以下要点写一篇80词左右的英语短文。文章的开头已经给出，不计入总词数。

　　要点：
　　1.简单描述：学生背着重重的书包去上学……
　　2.分析原因：课外班、课本、作业、测试……
　　3.提出建议：减少课本、作业……
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　　参考范文
　　It is reported that students in our country have a problem with their schoolbag weight. Most students have very heavy schoolbags. For the average primary school kid, his or her school bag weighs 3.5kg, while an average middle school student’s weighs 5.5kg.
　　The reason why their schoolbags are so heavy is that their school workload is equally heavy. On top of a large amount of homework, students also have to take a lot of extra classes and study hard for tests. All this work means that the books, test papers and exercise books pile up and make their schoolbags very heavy indeed.
　　In my opinion, schools and parents should work together to assign students less homework. If so, they’ll finally be able to carry their bags with ease.