关于Forseveralbillionyea的百科

•  Forseveralbillionyearsafterthe“BigBang”,theearthwassti...

• 问题详情： Forseveralbillionyearsafterthe“BigBang”,theearthwasstilljustacloudofdust.Whatitwasto______(36)wasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.Theearthbecameso ______(37)thatitwasnotclearwhethertheshapewo...
• 2019-03-1314672