下列哪种疾病可能出现单纯小细胞性贫血() ["A．珠蛋白生成障碍性贫血","B．缺铁性贫血","C．巨幼细胞性贫血","D．白血病","E．尿毒症"]
桡骨小头半脱位的原因是_______韧带薄弱。
下列哪项符合再生障碍性贫血() ["A．RDW正常，MCV正常","B．RDW正常，MCV增高","C．RDW正常，MCV减低","D．RDW增高，MCV正常","E．RDW增高，MCV增高"]
外周血中出现巨大原始红细胞的疾病是() ["A．骨髓纤维化","B．恶性肿瘤骨髓转移","C．红白血病","D．再生障碍危象","E．再生障碍性贫血"]
肱骨干中下1/3骨折，易损伤_______神经，手背皮肤感觉减退区在_______。
锁骨骨折好发于锁骨_______处，多由_______暴力引起。
