In his songs, Bob Dylan showed his concern about （）

单项选择题Bob Dylan is known for everything below EXCEPT（）

A．his particular voice
B．the quality of his song-writing
C．the quantity of his record sales
D．his importance in rock music

单项选择题Compared with the Beatles, Bob Dylan （）

A．has more influence on rock music
B．has sold fewer records of his songs
C．is more important in the record industry
D．is less important in American rock