骨髓增生极度活跃，最常出现于
A．再生障碍性贫血
B．正常骨髓象
C．溶血性贫血
D．慢性粒细胞白血病
E．缺铁性贫血
参考答案：D
--- Did you understand what the teacher said ?
---Yes! She explained the text in detail to make her lessons __________.
A．easy understood
B．easily to understand
C．easily understood
D．easy understand
（）异常现象的发现需要经过数据采集和数据分析比对两个环节。
