红细胞数降低的程度比血红蛋白更显著,最可能的诊断是()
A.失血
B.再生障碍性贫血
C.巨幼红细胞性贫血
D.溶血
E.缺铁性贫血
参考答案:C
胚胎抗原的特点是()。
A.胚胎期产生,出生后完全消失
B.仅以分泌形成存在
C.在宿主体内抗原性极弱
D.在宿主体内抗原性较强
E.仅以膜结合形式存在
— It's a good idea. But who's going to _____ the plan?
— I think Tom and Mike will. [ ]
A. carry out
B. get through
C. take in
D. set aside