"The president's report," a smile on his face, he continued, "___ to several hot topics, discusses how to increase peasants' income．"

A．referring

B．refers

C．having referred

D．referred

女性32岁，近一年来反复下肢淤斑，近一月来加重，伴月经增多。无特殊用药史。查肝不大，脾肋下及边，Hb112ｇ／L，WBC6．5×10⁹／L，PLT32×10⁹／L。肝肾功能正常，骨髓增生活跃，全片巨核细胞67枚，以颗粒巨噬细胞为主，未见产板巨噬细胞，血小板抗体滴度明显升高。

该患者的治疗应首选（）

A.脾切除

B.免疫抑制剂

C.输单采血小板

D.糖皮质激素

E.大剂量丙种球蛋白滴注