以珠蛋白合成障碍为主要表现的疾病是()。
A.镰状细胞贫血
B.海洋性贫血
C.PNH
D.AIHA
E.G-6-PD缺乏症
参考答案:B
下列短语是动宾短语的一项是[ ]
A.消失在云雾中
B.苦得他像一个木偶人
C.修水库
D.修了三年
34. He had no sooner arrived there ________ pestering his doctor.
A.and then he began
B.when he began
C.to begin
D.than he began