Listening is just as ________ as speaking in language learning.
A:important
B:more important
C:most important
D:the most important
如图,在平面直角坐标系xoy中,已知抛物线经过点A(0,4),B(1,0),C(5,0),抛物线对称轴l与x轴相交于点M.
读图,经过该省的两条铁路干线是( )