og-sc里的问题，请大家帮忙解释一下，谢谢

翁羽凌虚

80.Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.

(A)that flourished at the same time as the civilizations

(B)that had flourished at the same time as had the civilizations

(C)that flourished at the same time those had

(D)flourishing at the same time as those did

(E)flourishing at the same time as those were



Choice A, the best answer, uses the simple past tense flourished to describe civilizations existing simultaneously in the past.

Choice B wrongly uses the past perfect had flourished;past perfect tense indicates action that was completed prior to some other event described in the simple past tense: for example, "Mayan civilization had ceased to exist by the time Europeans first reached the Americas."

Choice C lacks as after time.

In choices C, D, and E, the plural pronoun those has no plural noun to which it can refer.

In C, had signals the incorrect past perfect;

did in D and were in E are awkward and unnecessary(没有歧义的时候补出动词多余，尤其在这儿，因为后边还有一堆介词短语，就更加显的笨拙，而且造成歧义).

D and E also incorrectly use the present participle flourishing where that flourished is needed.



分词和定语从句的区别，（这儿是一个3-2 split），整体与局部的。


其中的3-2split 是什么啊？

104.The diet of the ordinary Greek in classical times was largely vegetarian--vegetables, fresh cheese, oatmeal, and meal cakes, and meat rarely.

(A)and meat rarely

(B)and meat was rare

(C)with meat as rare

(D)meat a rarity

(E)with meat as a rarity
OG fails also, because it lacks a function word such as with to link it to the main clause. 为什么这里一定要有with呢？独立主格不是可以有n.+n.的形式吗？

OG fails also, because it lacks a function word such as with to link it to the main clause. 为什么这里一定要有with呢？独立主格不是可以有n.+n.的形式吗？