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

答案是B，我能读懂句意就是觉得很混乱，怎么选的啊？

先谢谢大家了

A: were谓语重复，应该去掉

B: correct，connected分词修饰句子主语settlements

C: 第二个of修饰Structures不对，应该修饰scale；each同位语从句用过去完成时没必要，

D: 第二个of修饰Structures不对，应该修饰scale；and with each没有平行对象，

E: 第二个of修饰Structures不对，应该修饰scale；each后面是完整句子但没有连词

注意：

1、The Anasazi settlements at Chaco Canyon were built on a spectacular scale of up to 600 rooms each, connected by a complex regional system of roads. each指The Anasazi settlements，而不是rooms或者structures！

太感谢了！！！

good luck!