2岁女孩,已确诊为重型β地中海贫血。
其父母再生一个小孩,则这个小孩不患地中海贫血的概率为()
A.20%
B.25%
C.50%
D.75%
E.100%
参考答案:B
We left the small town, _ clearly _ no need to stay.
A.it; was
B.it; being
C.there; was
D.there; being
目前认为扩张型心肌病最主要的病因是()
A.单基因显性遗传
B.持续病毒感染
C.冠状动脉病变
D.药物因素
E.心肌能量代谢障碍