美女18禁黄无遮挡网站,久久国产乱子精品免费女,日本高清视频网站WWW,岛国av无码免费无禁网站麦芽,久久久一本精品99久久精品66直播

Children take part in science and technology activities in Beijing

Source: Xinhua| 2018-05-21 15:20:55|Editor: Xiang Bo
Video PlayerClose

CHINA-BEIJING-SCIENCE AND TECHNOLOGY ACTIVITY (CN)

Children make birds' nests with their parents at a scientific carnival in Beijing, capital of China, May 20, 2018. Many parents took their children to take part in science and technology activities during the 2018 National Science and Technology Week, which started on May 19. (Xinhua/Jin Liwang)

   Prev 1 2 3 4  

KEY WORDS: science
EXPLORE XINHUANET