The Americans go to the movies mainly because they want______.

A．Because the world is becoming more and more noisy.
B．Because they have learned that noise is also a kind of pollution.
C．Because noise is an unwanted waste for human beings.
D．Because people knew little about the danger of noise before.

A．they are well-made and the stories are interesting
B．the characters in the movies are free to do what ever they like
C．the heroes have to cope with many problems and frustrations
D．good guys in the movies always win in the end