下列四天中,符合“太阳直射点在南半球,并向北移动”的是 ( )
A:元旦
B:劳动节
C:儿童节
D:我国国庆节
-- What do you think of the sweater?
-- The style is very _____. I'll take it.
已知代数式x+2y的值是3,则代数式2x+4y+1的值是( )