—Lingling, do you know ___________ woman in white? —Yes, she is __________ nurse in Children's Hospital.
图为某同学绘制的某绿色植物的叶肉细胞在光照强度分别为a、b、c、d时,单位时间内CO2和O2释放量的变化图。下列有关叙述正确的是