DNA合成障碍性贫血包括（） （）
A.增生不良性贫血
B.珠蛋白合成障碍性贫血
C.缺铁性贫血
D.巨幼细胞性贫血
E.溶血性贫血
参考答案：D
The buses, _____ were already full, were surrounded by anxious people.
A．all of them
B．all of which
C．they all
D．all which
非零售粗梳粗支混纺棉多股纱或缆
