A:C2H5OH
B:CH4
C:C2H4O
D:C3H8
When we were in Anhui, we took many photos ________ Mount Huang.
下列加线词词类活用现象与“妪,先大母婢也,乳二世”相同的一组是( )
下列有关新航路开辟的表述,不正确的是( )