A: I wear size 35 shoes.
B: I wear size 37 shoes. Your feet are ____ than mine.
在△ABC中,若a2-b2=3bc且cb=23,则角A=( )
已知全集U={x|0<x<9},A={x|1<x<a},若非空集合A⊆U,则实数a的取值范围是( )