贫血患者实验室检查为小细胞正色素性贫血，伴有慢性下肢溃疡，血清铁6.57μmol／L，总铁结合力41.56μmol／L，骨髓外铁（++），诊断为（）

A.缺铁性贫血

B.巨幼细胞贫血

C.失血性贫血

D.铁粒幼细胞性贫血

E.慢性感染性贫血

连词组句。

1. the, capital, China, city, of, is, Beijing

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2. is, flag, this, China's

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3. U. S., is, of, the, China, east

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4. in, I, know, English, it

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