血海穴位于(B)
A．髌骨上缘中点上2寸
B．髌骨内上缘上2寸
C．髌骨外上缘上2寸
D．髌骨内下缘上2寸
E．髌骨外下缘上2寸
参考答案：B
everybody enjoys fresh cut flowers around his house．few people know how to keep them for as long as possible．
A．Because
B．Since
C．While
D．If
肺结核大咯血最致命的危险是
A．失血性休克B．窒息C．感染扩散D．严重贫血E．DIC
