等腰三角形、正方形、圆中,对称轴最多的是( ),它有( )条对称轴,最少的是( ),它有( )条对称轴。
圆;无数;等腰三角形;1
-- How can I ______ well with my lessons, Dad?
-- Practice makes perfect.
A.work on
B.hold on
C.get on
D.keep on
折旧费