Helping resolve government policy dilemmas is______.

A．To help students prepare to enter American Universities.
B．To teach students how to use English at work.
C．To provide work opportunities for graduating students.
D．To help students learn to communicate with others in their daily lives.

A．Cats and humans are similar creatures.
B．Cat naps can get rid of tiredness.
C．Cat naps can make people’s moods better.
D．Cat napping is a way to build up body’s energy.