填空题

One of America’s most important (26) is her modern music. American popular music is played all over the world. It is enjoyed by people of all ages in all countries. Though the lyrics are English, (27) people not speaking English enjoy it. The reasons for its (28) are its fast pace and (29) beat.
This music has many origins in the United States. Country music, coming from the (30) areas in the southern United States, is one source. Country music (31) simple themes and melodies (32) day to day situations and the feelings of country people. Many people (33) this music because of the emotions expressed by country music songs.
A second origin of American popular music is the blues. (34) It is usually played and sung by black musicians, but it is popular with all Americans.
Rock music is a newer form of music. (35) .It was first known as rock-and-roll in the 1950’s. Since then there have been many forms of rock music, hard rock, soft rock, punk rock, disco music and others. Many performers of popular rock music are young musicians.
Some American popular songs are popular all over the world. (36) .The words may differ but the enjoyment of the music is universal.