缺铁性贫血采用铁剂治疗，观察疗效最早的指标是
A．血红蛋白上升
B．血清铁恢复正常
C．面色红润
D．网织红细胞增
E．MCV恢复正常
参考答案：D
解析：题解：缺铁性贫血患者口服铁剂后5～10天网织红细胞即开始上升，7～12天达高峰，其后开始下降。1～2周后血红蛋白上升，血象完全恢复约需2个月。血红蛋白恢复正常后仍需继续服药一段时间，补足体内铁贮备。网织红细胞的变化是观察疗效最早的指标。
| 看图回答问题。 | |
| 1. When does Mike usually get up? __________________________________. |  |
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