A． they are cold to each other
B． they look away from each other
C． they misunderstood each other's signals
D． they are introduced at an early age
A． They eat and sleep each other
B． They observe each other's behaviors
C． They learn to speak each other's language
D． They know something from each other's voices
A． have common interests
B． are less different than was thought
C． have a common body language
D． are less intelligent than was expected
A． We should learn to live in harmony
B． We should know more about animals
C． We should live in peace with animals
D． We should learn more body languages