—It's important for us to know all the subjects.
—Yeah, group work is my favorite.
A:how to study
B:when to study
C:which to study
D:what to study
已知正比例函数y=kx (k≠0),当x=-1时,y=-2,则它的图象大致是( ).
读《中国地图》和《北京市地图》,在《北京市地图》中,天津在北京的( )
学了《蝉和狐狸》我们得出的寓意是什么?