【T17】 A.WORK LONG HOURS B.TO CLASSICAL MUSIC C.EMOTIONS OF THE PEOPLE D.OF ITS OWN A.FORCED TO【T13】______ B.IN CONTRAST【T14】_______ C.EXPRESSING THE MOODS, INTEREST, AND【T15】_______ D.NO PROMINENT STYLE【T16】_______ MUSIC COMES IN MANY FORMS; MOST COUNTRIES HAVE A STYLE. OF THEIR OW N.AT THE TURN OFTHE CENTURY WHEN JAZZ (爵士乐) WAS BORN, AMERICA HAD【T17】______.NO ONE KNOWSEXACTLY WHEN JAZZ WAS INVENTED, OR BY WHOM, BUT IT BEGAN TO BE HEARD IN THE EARLY 1900S.JAZZ IS AMERICA'S CONTRIBUTION TO POPULAR MUSI C.【T18】_______,WHICH FOLLOWS FORMALEUROPEAN TRADITIONS, JAZZ IS SPONTANEOUS AND FREE-FOR M.IT BUBBLES WITH ENERGY,【T19】_______.IN THE 1920S JAZZ SOUNDED LIKE AMERICA, AND SO IT DOES TODAY.THE ORIGINS OFTHIS MUSIC ARE AS INTERESTING AS THE MUSIC ITSEL F.AMERICAN NEGROES, OR BLACKS, AS THEY ARE CALLED TODAY,WERE THE JAZZ PIONEERS.THEY WERE BROUGHT TO SOUTHERN STATES AS SLAVES.THEY WERE SOLD TO PLANTATION OWNERS AND【T20】______.WHEN A NEGRO DIED HIS FRIENDSAND RELATIVES FORMED A PROCESSION TO CARRY THE BODY TO THE CEMETERY.IN NEW ORLEANS, A BAND OFTEN ACCOMPANIED THE PROCESSIO N.ON THE WAY TO THE CEMETERY THE BAND PLAYED SLOW, SOLEMN MUSIC SUITED TO THE OCCASIO N.BUT ON THE WAY HOME THE MOOD CHANGE D.SPIRITS LIFTE D.DEATH HAD REMOVED ONE OF THEIR NUMBERS, BUT THE LIVING WERE GLAD TO BE ALIV E.THE BAND PLAYED HAPPY MUSIC, IMPROVISING (即兴表演) ON BOTH THE HARMONY AND THE MELODY OF THE TUNES PRESENTED AT THE FUNERAL.THIS MUSIC MADE EVERYONE WANT TO DANC E.IT WAS AN EARLY FORM. OF JAZZ.