听下面一段较长对话，回答以下小题。
【小题1】How do cats express satisfaction?

A．They move their heads forward.

B．They sit with their tails wrapped.

C．They clean themselves with tongues.

【小题2】Why do cats point their ears upwards and forward?

A．To read one’s mind.

B．To sort out things.

C．To show curiosity.

【小题3】What do dogs do to understand people?

A．Observe people’s signs.

B．Listen to people’s voice.

C．Watch people’s eyes.