指数函数y=ax,y=bx,y=cx,y=dx在同一坐标系中的图象如图所示,则a,b,c,d与1的大小关系为 ( )
A:a<b<1<c<d
B:a<b<1<d<c
C:1<a<b<C<d
D:b<a<1<d<c
—When is the ______ time to go to Dalian?
—Spring.