好看的中文字幕av,巨尻av在线,亚洲网视频,逼特视频,伊人久久综合一区二区,可以直接观看的av网站,天堂中文资源在线观看

Global EditionASIA 中文雙語Fran?ais
Opinion
Home / Opinion / Forum Trends

Why do so many Chinese children wear glasses?

chinadaily.com.cn | Updated: 2018-09-07 13:26
Share
Share - WeChat

1105852048 (US)

There has been plenty of research done about this problem. Most state the main reason for poor eyesight is a lack of vitamin D, or sunlight. Almost all Chinese kids hardly ever see sunlight, because they are either at school or at home studying. The short period of outside PE is not enough to get a “good dose” of sunlight.

Shortsightedness is on the rise among Chinese schoolchildren. Xu Xiaolin / For China Daily

 

|<< Previous 1 2 3 4 5   
Most Viewed in 24 Hours
Top
BACK TO THE TOP
English
Copyright 1994 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US