A. the violence of the initial impact
B. an outcome that is not self-erasing
C. a process of change in planets themselves
D. the absence of proof relating to a hypothetical collision
E. the ongoing process of accretion
我的答案: 无
A. the violence of the initial impact
B. an outcome that is not self-erasing
C. a process of change in planets themselves
D. the absence of proof relating to a hypothetical collision
E. the ongoing process of accretion
我的答案: 无