这让笔者想起现在学生普遍使用的双肩书包。在上世纪90年代之前，中小学生大多背着单肩书包上学，农村或困难家庭的孩子往往是父母亲手缝制，几本书及笔盒往里一装，就高高兴兴去上学了。后来，有专家指出单肩书包不利于青少年成长发育，长期使用容易造成“双肩不平”，几乎是一夜之间，中小学生都背起了双肩包，不仅背包需要父母帮忙，特别是走在半路上要从包里拿书放东西都不便。但后来发现，孩子们的书包果然越来越重，10多斤重的书包放在孩子的一个肩膀上确实不好背。

It makes the author think of now students generally use the shoulder bag.Before the 1990 s,Most small and medium-sized students carry shoulder bag to go to school,Rural or difficult family children is often parents hand sewing,A few books and pen boxes to a pack,Is happy to go to school.later,Experts pointed out that shoulder bag to adolescent growth,The long-term use of easy to cause"Shoulders rough",Almost overnight,Primary and middle school students are back up the double shoulder pack,Not only backpack need my parents for help,Especially on the road from the bag to take a book to put things inconvenience.But I later found out that,Children's school bags indeed as expected more and more heavy,More than 10 jins heavy bag on the child's a shoulder really bad back.

　　这就颇让人感慨，倡导双肩书包原意是保护身体，但也让更多的书能放进书包里，没有压偏孩子的肩膀，却给孩子的心理增加了更大的压力。同样，建议男女童“错龄入学”，看似科学，但实施之后无法预见的许多问题都会接踵而来。现在的同龄入学，看似不科学，但事实证明孩子的成绩无论是小学还是初高中，并没有显示太大的差异，同时还应该看到，这种看似“不科学”的入学模式，不仅为中国家庭所适应，世界上很多发达国家也同样采取这种模式。“错龄入学”只为解决男女童智力发育不齐的问题，却可能带来众多不可预测的问题。因此，还是应该仔细斟酌为好。朱永华

It is quite let a person feeling,Advocate shoulders bag original intention is to protect the body,But also let more books can in a bag,No pressure by the child's shoulder,But to the child's psychological increased more pressure.The same,Suggestions for boys and girls"Wrong age entrance",Seemingly science,But after the implementation of the unforeseen many problems will come.Now the entrance,Appears not to be scientific,But the fact that children's performance whether elementary school or junior,And did not show too much difference,At the same time should also see,This seemingly"Don't science"Entrance mode,Not only for Chinese families have to adapt to,Many developed countries in the world also take this model."Wrong age entrance"For solving private intelligence development heterologous problem,But can bring many unpredictable problem.therefore,Or should carefully consider as well.ZhuYongHua