It's interesting ________ games with the children.
A:play
B:to playing
C:playing
D:to play
水稻叶肉细胞的染色体数目是24条,它的根尖细胞分裂后新细胞的染色体数目、沿着花粉管移动的细胞(精子)染色体数目是( )
如图中A、B、C、D四幅图解释合理的是