Questions 11 to 18 are based on the conversation you have just heard.

A．Emotions are accompanied by some certain behaviors.
B．Emotions are combinations of subjective feelings.
C．Extreme emotional reactions are the features of emotional cognitive thought.
D．Emotional occurrences are also the processes of mental thinking.

A．Because they try to place their research on a manageable basis.
B．Because there too many emotions to recognize.
C．Because each emotion represents a different implication.
D．Because there are some secondary emotions.