______to some parts of South America is st
问题:
______to some parts of South America is still difficult, because parts of the continent are still covered with thick forests.
A.Orientation
B.Access
C.Procession
D.Voyage
______to some parts of South America is still difficult, because parts of the continent are still covered with thick forests.
A.Orientation
B.Access
C.Procession
D.Voyage