下列哪项不符合骨髓纤维化（）

A.多见于40岁以上

B.可有骨骼疼痛

C.常出现干抽

D.患者骨髓中造血细胞均减少

E.骨髓病理学检查将本病分为3期

These natural parks are important for preserving animals, which would ________ risk dying out.

A．merely

B．rather

C．otherwise

D．moreover