声卡中什么接口用于连接话筒（）
A.Line out
B.MIC IN
C.LINE IN
D.Anx-In
参考答案：B
If the students who killed themselves had only been more confident, their deaths ________.
A．need have been avoided
B．must have been avoided
C．might have been avoided
D．will have been avoided
5岁男孩患者，驼背，疼痛5个月，消瘦贫血，无神经症状，经检查双肺浸润性结核，6～8胸椎结核，伴椎旁脓肿，血沉112 mm/h，在支持疗法及全身抗结核治疗同时应首选
A．病灶清除术
B．石膏背心
C．卧硬板床
D．冷脓肿穿刺
E．矫正驼背
