单项选择题

Parts of the dolphin's brain are particularly well developed to handle different kinds of sound.

A． Right
B． Wrong
C． Not mentioned
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单项选择题
Some scientists believe that dolphins have a language of their own.
A． Right
B． Wrong
C． Not mentioned
单项选择题
Sounds can be called a language only when they have a structure and a grammar.
A． Right
B． Wrong
C． Not mentioned
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