简述缺铁性贫血的分期。
参考答案：
（1）储铁减少期（ID期）；
（2）红细胞缺铁生成期（IDE期）；
（3）缺铁性贫血期（IDA）。
Visitors from around the world came to this waterside village and were amazed at this ________ bridge，which had been hundreds of years old.
A．little white stone fine
B．fine white stone little
C．fine white little stone
D．fine little white stone
痉挛、抽筋、癫痫发作的处理的要点。
