属于遗传性疾病的贫血是()
A.缺铁性贫血
B.再生障碍性贫血
C.自身免疫性溶血性贫血
D.珠蛋白生成障碍性贫血
E.巨幼细胞性贫血
参考答案:D
The most of his time is ____ to prepare for the college entrance examination.
A.used
B.spent
C.taken
D.made
对富气中C3、C4组分选择性最好的最()
A、烷烃
B、环烷烃
C、芳烃