细胞外铁阴性,铁粒幼红细胞占12%,此结果符合()
A.正常骨髓铁粒染色
B.缺铁性贫血
C.地中海贫血
D.难治性贫血
E.溶血性贫血
参考答案:B
月经周期中,雌孕激素水平均下降的时期是()。
A.月经期
B.增生早期
C.增生晚期
D.分泌期
E.月经前期
She spent 25 dollars on the watch chain.It means ___.
A.she paid 25 dollars on the watch chain
B.the watch chain cost her 25 dollars
C.it took her 25 dollars buying the watch chain
D.she bought the watch chain of 25 dollars