The direction in which the Earth and the other solid planets--Mercury, Venus, and Mars--spins were determined from collisions with giant celestial bodies in the early history of the Solar System.


spins were determined from

spins were determined because of

spins was determined through

spin was determined by

spin was determined as a result of 

考题讲解
还没有题目讲解(毕出老师会陆续发布对官方考题的解读,请保持关注)。

登录注册 后可以参加讨论

BiChu21-SC