50．A．this           B．that              C．as                   D．when

A

Popular music in America is what every student likes．Students carry small radios with earphones and listen to music before class, after class and at lunch．Students with cars buy large speakers and play them music loudly when they drive on the street.

Adult（成年的） drivers listen to music oil the car radio when they drive to work．They also listen to the news about sports, the weather and the life of American people .Most of the radio programs are music.

Pop or popular music singers make much money．They make a CD or tape which radio stations use in many places .Once a popular singer is heard all over the country ,young people buy his or her tapes．Some of the money from these tapes goes to the singer．Wherever（无论哪里） the singer goes all the young people want to meet him or her．Now the singer has become a national star．There are other kinds of music that are important to Americans．One is called folk（民间） music．It tells stories about the common（普通的） life of Americans. Another is called western or country music. This was started by cowboys who would sing at night to the cattle they were watching. Today, any music about country 1ife and the love between a country boy and his girl is called western or country music.