红细胞大小明显不均常见于()
A.缺铁性贫血
B.巨幼细胞性贫血
C.失血性贫血
D.再生障碍性贫血
E.珠蛋白生成障碍性贫血
参考答案:B
— I wonder _____.
— I'm afraid we'll be late. [ ]
A. how we can be on time
B. what we are going to do
C. why we get to school late
D. if we will arrive at the meeting on time
关于咽,下列正确的是()
A.口咽是消化道和呼吸道的共同通道
B.上端附着颅底,下通食管和气管
C.鼻咽后壁有咽鼓管咽口
D.口咽侧壁有咽隐窝
E.喉咽下端续气管