红细胞大小不一最常见于( )
A．缺铁性贫血
B．巨幼细胞性贫血
C．失血性贫血
D．再生障碍性贫
E．珠蛋白生成障碍性贫血
参考答案：B
—Look! It's raining heavily. take a raincoat with you?
—Well, I'll take one right now. [ ]
A. Why not
B. Why don't
C. Would you mind
D. Would you like
电泳的基本原理
