缺铁性贫血为()。
A.小细胞低色素性贫血
B.正常细胞正常色素性贫血
C.大细胞正常色素性贫血
D.小细胞正常色素性贫血
E.大细胞低色素性贫血
参考答案:A
什么叫比重?
Not until the next morning _____ how serious the situation was.
A.did she realise
B.had she realised
C.she realised
D.she had realized