I crayons.
A:have no
B:am not have
C:have not
D:not have
We____ shopping unless it ____ tomorrow.
早春,稻农在水稻种子播种前,常将种子置于流动的河流或溪水中 浸泡一段时间。这种做法与以下哪种激素变化的相关性最大( )