The origin of the word remains obscure, bu
题型:单项选择题
问题:
The origin of the word remains obscure, but it is certainly not from Greek.
A.not well-known
B.not very important
C.not known
D.difficult to understand
The origin of the word remains obscure, but it is certainly not from Greek.
A.not well-known
B.not very important
C.not known
D.difficult to understand