按贫血的形态学分类,骨髓病性贫血属下列哪项()
A.单纯小细胞性贫血
B.小细胞低色素性贫血
C.正常细胞性贫血
D.大细胞性贫血
E.珠蛋白生成障碍性贫血
参考答案:C
Suddenly he ____________his mother in the crowd and ran to her .
A.lost sight of
B.caught up with
C.caught sight of
D.in sight of
穿戴上肢假肢后在接受腔表面施压时应无__________________。