1.

"Bottlenose dolphins are not alone", what does the author mean by this sentence?

A. Only for dolphins do some scientists still argue that there is sufficient evidence for their overall cognitive superiority.
B. Dolphins together live in a primarily acoustic world and use a variety of auditory signals for communication.
C. Dolphins are kept in captivity along with other animal species.
D. Apart from bottlenose dolphins, the ability to learn and to combine a large number of referential symbols and use them with a small set of syntactic rules is within the reach of several nonhuman animals from the avian and mammalian classes.
E. All of the above
Answer» E. All of the above


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