下颌种植修复需拔牙后多久进行
A.1周B.1个月C.3个月D.3~4个月E.5~6个月
参考答案:D
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