问题

g messages by telephone hasbecome _______ second most popular way of exchanging of New Yeargreetings, according to _____ research by China Daily.
A:a music course for theelderly people
B:a pop club forprofessional musicians
C:a rock music camp formusic lovers
D:a, the
B:a pop club forprofessional musicians
C:a rock music camp formusic lovers
D:a, the
正确答案是: