导致肥厚型心肌病最常见的原因是()
A.遗传
B.中毒
C.代谢异常
D.药物作用
E.病毒性心肌炎
参考答案:A
解析:肥厚型心肌病常有明显家族史,是常染色体显性遗传疾病。
On that cold day, only_____handful of people were at the station, where I made_____ acquaintance of Mr. Smith.
A.a; an
B.a; the
C.the; a
D.the; the
在常规治疗的鼻炎患者中,内舒拿和雷诺考特的起效时间分别是多长时间()。
A.10min,19min
B.19min,10min
C.20min,3min
D.3min,20min