1.The underlined word"marks"means( )
A.instruction B.gardes C.service D.information
2.From the second paragraph, we can learn that( )
A."Luo Seven"is very popular with teenagers in Taiwang.
B."Luo Seven"collects all Luo Zhixiang's famous songs.
C.people can listen to music in many styles in "Luo Seven"
D.the sales of "Luo Seven"were No.1 on G-music for over three months