已知函数y=loga(ax2﹣x)在区间[2,4]上是增函数,则实数a的取值范围是( )
(1,+∞)
You’d better fly somewhere in the west. Then you can _________ a hire car and travel around.
A.take up
B.get on
C.pick up
D.turn on
受精卵和未受精卵各发育成什么?