Between 4.5 and 3.8 billion years ago, t
问题:
Between 4.5 and 3.8 billion years ago, the earth became so ______ that it was not clear whether the shape would last or not.
A.genuine
B.slight
C.solid
D.violent
Between 4.5 and 3.8 billion years ago, the earth became so ______ that it was not clear whether the shape would last or not.
A.genuine
B.slight
C.solid
D.violent