885section18-3

1.        There is speculation that increasing cold weather was what may have been responsible for the Anasazi move from Mesa Verde to sites in other canyons.

(A) that increasing cold weather was what may have been

(B) whether increasing cold weather was what was

(C) that increasingly cold weather was what had been

(D) whether increasingly cold weather may have been what was（E）

(E) that increasingly cold weather may have been

对答案没有什么问题，只是想问问题目中为什么用原形move?我觉得好像应该用moving,作for的介宾，been responsible for...moving from...to...， 不是吗？？

我理解tianwan的意思。

不过，根据responsible的用法，be responsible for sth 或者 be responsible for doing sth，move 应该是个名词。

如果是分词短语，那么上述问题应该是要考虑的。即应该使用Anasazi's moving, 而不是Anasazi moving.

但因为是个名词，我觉得不需要考虑这个问题，遵照原文就是了。Anasazi move可能是个专业学术名词，Anasazi's move 应该特指Anasazi的移动。不过就本题而言，应该两者意思一样。

谢谢楼上两位，

还是觉得有点违背习惯用法……

sorry ,笨笨的问,the answer is ？