强心苷对哪一种心衰无效()
A.先天性心脏病引起的
B.高血压引起
C.风湿性心脏病瓣膜病引起的
D.肺源性心脏病引起的
E.缩窄性心包炎引起的
参考答案:E
They have a beer together _____, talking about their separate life, but not often.[ ]
A. by and by
B. now and then
C. all the time
D. more or less
接骨丹2功效与作用