— She is very nice and friendly, although sometimes she is so strict ______ my study.
A:about, at
B:of, about
C:/, about
D:of, with
下列有关血管的叙述中,正确的是( )
陶行知说:“只有人中人,没有人上人,也就没有人下人”以下最符合题意的是( )