This music album is（ ）as it was the only one ever signed by the pop star.
A.
unusual
B.
unique
C.
rare
D.
special
正确答案是B
This music album is（ ）as it was the only one ever signed by the pop star.
This music album is（ ）as it was the only one ever signed by the pop star.
A.
unusual
B.
unique
C.
rare
D.
special
正确答案是B