A:it's really a nice day today, isn't it?
B:what knid of weather are we going to have today?
C:do you think it is going to rain today?
D:what' it like outside today?
化学与生产生活密切相关,下列说法中错误的是( )
在形成精子或卵细胞的细胞分裂过程中,染色体的变化是( )