He is a well-known singer, but he is an actor.
A. most famous for
B. more famous as
C. more known as
D. best known for
网友回答
A. most famous for
(答案→)B. more famous as
C. more known as
D. best known for
解析：考查词组和比较级：句意：他是著名歌手，但是他做为演员更加著名。Be well-known/famous for因为…而著名，Be well-known/famous as作为…而著名，排除AD。因为是和歌手比，所以用比较级，well known的比较级是better-known，只能选B。