题目选项分析

Scientists say that each of the photographs taken of the Ares Vallis plain by the Mars Pathfinder indicates the overwhelming extent of the flooding on the planet billions of years ago and the degree to which rocks were scattered by its force.

Scientists say that each of the photographs taken of the Ares Vallis plain by the Mars Pathfinder indicates the overwhelming extent to flooding on the planet billions of years ago and the degree that rocks were scattered by its force.