评论
打印
185.The most important thing about cotton in history is ____ part that it played in ____ Industrial Revolution.
A.不填；不填
B.the;不填
C.the;the
D.a;the
186.It is really ____ useful dictionary,_____ dictionary every one of us needs.
A.an;a
B.a;the
C.the;a
D.a;a
