GWD6-Q27，答案正确吗

GWD6-Q27:

The results of two recent unrelated studies support the idea that dolphins may share certain cognitive abilities with humans and great apes; the studies indicate dolphins as capable of recognizing themselves in mirrors—an ability that is often considered a sign of self-awareness—and to grasp spontaneously the mood or intention of humans.

A.      dolphins as capable of recognizing themselves in mirrors—an ability that is often considered a sign of self-awareness—and to grasp spontaneously

B.       dolphins’ ability to recognize themselves in mirrors—an ability that is often considered as a sign of self-awareness—and of spontaneously grasping

C.      dolphins to be capable of recognizing themselves in mirrors—an ability that is often considered a sign of self-awareness—and to grasp spontaneously

D.      that dolphins have the ability of recognizing themselves in mirrors—an ability that is often considered as a sign of self-awareness—and spontaneously grasping

E.       that dolphins are capable of recognizing themselves in mirrors—an ability that is often considered a sign of self-awareness—and of spontaneously grasping

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答案是E，是不是因为consider 后面不能加as

那么加as的都有哪些习惯用语

还有 have the ability of doing 对吗

consider 后面不能加as

 have the ability of doing 不对

另外，d中and前后并列关系不清晰，e中and后有个of。

D.      that dolphins have the ability of recognizing themselves in mirrors—an ability that is often considered as a sign of self-awareness—and spontaneously grasping 

     have to ability to 慣用語, 且 have the ability............- and spontaneously grasping 不對稱

E.       that dolphins are capable of recognizing themselves in mirrors—an ability that is often considered a sign of self-awareness—and of spontaneously grasping  對稱

     be capable of 有此用法

有人能解释一下c项的错误吗？

先谢过了

C中，indicate得宾语从句没用that 开头，

而且平行错误了应该是recoganize of .... of  而不是 to.... to...

觉得最重要的问题是

ability（of sb）to do sth

of……of……这个要对称