prep1-57

57.   (27481-!-item-!-188;#058&003189)

The Anasazi settlements at Chaco Canyon were built on a spectacular scale with more than 75 carefully engineered structures, of up to 600 rooms each, were connected by a complex regional system of roads.

(A) with more than 75 carefully engineered structures, of up to 600 rooms each, were

(B) with more than 75 carefully engineered structures, of up to 600 rooms each,

(C) of more than 75 carefully engineered structures of up to 600 rooms, each that had been

(D) of more than 75 carefully engineered structures of up to 600 rooms and with each

(E) of more than 75 carefully engineered structures of up to 600 rooms each had been

E为什么不可以？看了许久，我是这么理解的：E选项中each变成修饰600rooms。而在each后加了逗号，则变成修饰structures。

我觉得楼主的理解差不多，不过我的意见是，E最主要的问题在于

1.on a spectacular scale "特大规模地",是固定搭配，后面没有of；而on a scale of 是“在什么范围内”的意思，比如on a scale of 1 to 5.

2.had been，这句话一直用过去时，没必要在用一个过去完成时。

3.structures of ...让人confused。

我选B。答案是啥？

E答案会让句子有两个谓语。