Between 4.5 and 3.8 billion years ago, the earth became so ______ that it was no

题型：不详难度：来源：

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

答案

D

解析

考查词义辨析，genuine真心的，slight轻轻的，solid 坚固的，violent猛烈地，句意：在4.5到3.8亿年前，地球变得如此的猛烈以至于不清楚形状是否会不会持久。故选D。