男性，65岁，手脚麻木伴头晕三个月，并时常有鼻出血。体检：脾肋下3.Ocm，肝肋下1.5cm。检验：血红蛋白量150g/L，血小板数11OO×10⁹/L，白细胞数21.6×10⁹/L，以中性分叶核为主，NAP积分增高。

首先考虑是下列哪一种疾病。（）

A.慢性粒细胞白血病

B.慢性中性粒细胞白血病

C.继发性血小板增多症

D.原发性血小板增多症

E.骨髓增生性疾病

Play being recognized as an important factor improving mental and physical health and thereby reducing human misery and poverty.

A．By recognizing play as

B．Their recognizing play as

C．Recognition of it being

D．Play is recognized as