作者：英吉
Scientists say that each of the photographs taken of the Ares Vallis plain by the Mars Pathfinder indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that rocks were scattered by its force.
(A) indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that
(B) indicate that the extent of the floods on the planet billions of years ago was overwhelming and the degree to which
(C) indicate the overwhelming extent of the floods on the planet billions of years ago and the degree to which
(D) indicates the overwhelming extent of the flooding on the planet billions of years ago and the degree to which
(E) indicates the overwhelming extent to flooding on the planet billions of years ago and the degree that
原文意思：科学家说每张照片都能指出事情1和事情2
题目分析：既然indicate这个动词是每一张照片发起的，则这个动词应该用单数，我们先把头三个选项干掉。D说extent of the flooding而E用extent to flooding，人家强调的意思是洪水得extent显然是of flooding才是这个意思。如果你说你看不出来这个区别，可以，回避掉，后面还有一个 D用to which 来修饰degree而E用that，你后面说的是石头被它的力量撕裂，意思已经完整，如果用that指代degree，那这个that在这个由它引导的从句中就没有地方放了，所以答案还是D。
