prep中的一个题目，each的指代问题

stockall

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

each的指代读不清楚，

请问each是指代的事structres,还是settlements?

我觉得实在很难读出来。

stockall

请问有nn能帮我么？

leonnuaa

应该是settlements,settlements 有居留地的意思,在此意思比较合适

irence_928

ＥＴＳ很喜欢有ＥＡＣＨ的答案，你要记住．

lisy

典型的趋势，要逻辑上理解了题目才行