- 问题详情:IfyouwalkinthestreetsofChinatoday,you’llquicklynoticethatmostyoungpeoplewearglasses.InShanghai,forinstance,86%ofhighschoolstudentssufferfrommyopia,ornear-sightedness.Anewstudyoffersoneclue:near-sightednessisnearlytwiceascommoninonepartofamid...
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