单项选择题

To study animal emotions, scientists should

A．set up improved and refined skillful experiments.
B．analyze human emotional.
C．distinguish what is emotional and what is conditioned.
D．learn from animal behaviorists.
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单项选择题
The example of a gull chick pecking the parent's bill illustrates that
A．behaviors can be learned responses and have no emotional content.
B．some animals have no emotions.
C．it takes time for animals to be conditioned.
D．emotions are very important to survival.
单项选择题
According to the author, most scientists explain animal behaviors in terms of reflexes and conditioning because
A．only humans have emotions.
B．only animals have both learned and emotional behavior.
C．emotions are more difficult to measure and observe than reflexive behavior.
D．reflexes and conditioning will lead to better understanding of animal emotion.
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