885 sec10-14,多谢！

14.   Inuits of the Bering Sea were in isolation from contact with Europeans longer than Aleuts or Inuits of the North Pacific and northern Alaska.

(A) in isolation from contact with Europeans longer than

(B) isolated from contact with Europeans longer than

(C) in isolation from contact with Europeans longer than were

(D) isolated from contact with Europeans longer than were（D）

(E) in isolation and without contacts with Europeans longer than

C和D中， in isolation 不是更和原文保持一致吗？

be+prep+dotion(动词性名词)改为do

have a dotion改为do

have adj dotion改为be adv done

还有，be+介词短语一般只有靠平行结构的时候才可能对，记得有一道讲Troy的存在性问题的SC就算选项时be+prep的完美平行还是不选，因为太复杂。

多谢了！