治吐血、便血、崩漏宜选
A．当归
B．锁阳
C．阿胶
D．仙茅
E．以上均不是
参考答案：C
He bought many lottery tickets, never________any prize.[ ]
A. winning
B. to win
C. won
D. had won
在ISDN中的用户一网络接口处最高速率是（）.
A.64Kbps
B.128Kbps
C.2Mbps
