题目信息
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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正确答案：
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
考点：句子结构+平行
1、the studies indicate that此为宾语从句，that不能省略。排除A/B/C
2、be capable of doing sth. and of doing sth.平行，选择E
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