中文字幕无码久久人妻_中国无码a一级刺激片_国产综合色产在线观看_色多黄片资源2020

Beiling Central Primary School in China's Hebei creates science lessons on robots

Source: Xinhua| 2019-05-10 20:18:54|Editor: ZX
Video PlayerClose

CHINA-HEBEI-ROBOT LESSONS (CN)

Pupils assemble robots at Beiling Central Primary School in Qiuxian County, north China's Hebei Province on May 10, 2019. This primary school has integrated technology innovation into class, and created science lessons on robots. (Xinhua/Zhu Xudong)

   1 2 3 4 5 Next  

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011100001380490471