甲状腺功能亢进症所出现的杂音,其产生机制是
A.血流加速
B.瓣膜狭窄
C.瓣膜关闭不全
D.异常通道
E.血管腔扩大
参考答案:A
下列各项,不具有退虚热功效的药物是()
A.青蒿
B.水牛角
C.银柴胡
D.胡黄连
E.地骨皮
Your father likes to play golf. He’s really enthusiastic ________ it.
A.by
B.about
C.with
D.on