I have arranged for a car to ____________at the station.
A:pick them up
B:pick up them
C:pick them on
D:pick on them
I'm sorry I'm late. The ____ is, the traffic is very busy at the moment.
下列大小关系正确的是( )
比较图中的四种动物,你认为哪两种生物的亲缘关系更近一些( )