今年全国共有7.5万余名学生报名本次竞赛，上海赛区共1500余名学生报名参赛。全国中学生地球科学奥林匹克竞赛委员会秉承公平、公正、公开的原则，决出预赛各个赛区一等奖、二等奖、三等奖的获奖人员以及决赛选手。

BEIJING, May 1 (Xinhua) -- The latest samples from 25 scientific experiments conducted aboard China's Tiangong space station, totaling approximately 37.25 kilograms, were brought back to Earth on ...