—Please you leave nothing here.
A:make sure
B:find out
C:think of
下列有关文学常识的表述有误的一项是( )
____ KClO3﹣=____ KCl+____O2
____ C2H4+____O2﹣=____ CO2+____H2O.
下列有关激素的叙述中,错误的是( )