求助：OG12 SC68

lseven

68、The first trenches that were cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence for centrally administered complex societies in northern regions of the Middle East that were arising simultaneously with but independently of the more
celebrated city-states of southern Mesopotamia, in what is now southern Iraq.
(A) that were cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence for centrally administered complex societies in northern regions of the Middle East that were arising simultaneously with but
(B) that were cut into a 500-acre site at Tell Hamoukar, Syria, yields strong evidence that
centrally administered complex societies in northern regions of the Middle East were arising simultaneously with but also
(C) having been cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence that centrally administered complex societies in northern regions of the Middle East were arising simultaneously but
(D) cut into a 500-acre site at Tell Hamoukar, Syria, yields strong evidence of centrally administered complex societies in northern regions of the Middle East arising simultaneously but also
(E) cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence that centrally administered complex societies in northern regions of the

请大家帮忙解释：That were cut … and that were arising … are unnecessarily wordy and create an unnecessarily complicated and confusing sentence structure.为什么？

ximenheng

The first trenches  （cut into a 500-acre site） 过去分词做定语
后边的也一样

oncedream

http://forum.chasedream.com/GMAT_SC/thread-619081-1-1.html   看这个 。。经典解答。。还有这个

题目的做法：
第一步：只看这些形式：
A that were cut
B that were cut
C having been
D cut
E cut
第二步：排除C，这是最不可能成为选项的东西
第三步：A B 一组，D E 一组，这两组的差别是A B 啰嗦，能用过去分词的不需要定语从句，简单原则，排除A B，选出D E。
第四步：D E 差别在于YIELD的单复数，主语是TRENCHES 复数，所以选出E。
-- by 会员 slgbond (2012/1/24 13:43:40)

      这个  http://forum.chasedream.com/GMAT_SC/thread-648043-1-1.html  简单明了