--- I haven’t seen Mary recently. And you?

--- Me neither. I’m afraid she _________ to her experiment for too long a time.

A．is devoting

B．was devoted

C．has been devoting

D．has been devoted

在骨髓涂片细胞学检查的内容中，错误的是（）

A.分数不同系列和不同发育阶段细胞

B.分数200个或500个有核细胞

C.计数粒红比例

D.退化或破碎细胞在分数时应计入

E.巨核细胞单独计数