亚洲91视频,国产91网,久久久久久久久久久久久久久国产,亚洲一区二区三区日本久久九,亚洲日本久久,国产精品久久久99,亚洲欧美一区二

Students learn about oral hygiene ahead of national day for dental care

chinadaily.com.cn/Xinhua | 2017-09-20 09:21

Students learn about oral hygiene ahead of national day for dental care

A medical staff member shows students the correct way to brush teeth in Taolin county central primary school in Donghai village, East China's Jiangsu province, Sept 18, 2017. The country's "national day for dental care" is marked on Sept 20 every year. [Photo by Zhang Zhengyou/Asianewsphoto]

Previous 1 2 3 4 5 6 Next

Related Stories

BACK TO THE TOP
Copyright 1995 - . 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