[讨论]prep1 36 比的是啥？

36.  (26371-!-item-!-188;#058&002614)

Thomas Eakins's powerful style and his choices of subject--the advances in modern surgery, the discipline of sport, the strains of individuals in tension with society or even with themselves--was as disturbing to his own time as it is compelling for ours.

(A) was as disturbing to his own time as it is

(B) were as disturbing to his own time as they are

(C) has been as disturbing in his own time as they are

(D) had been as disturbing in his own time as it was

(E) have been as disturbing in his own time as

答案是B~虽然这题我做的时候做对了，但是我想知道的是这个句子比较的是啥。。。以前见到的as...as的比较题都是只在as中间出现一个形容词，但这个先是disturbing，然后又是compelling，所以不知道它到底在比个啥玩意。。。

然后还有个引申的问题：各位xdjm平时做as...as、than比较题，还有twice、double这种倍数题是有没啥小窍门？我觉得我做这种题老错。。。真囧。。。万谢！

囧。。。有米有好心人可以告诉俺一下。。5555。。。我发现我经常分析不出比较的标的物是什么。。我觉得了解比较对象这点对于做这类题还挺重要的。。