确诊胃溃疡出血最可靠的方法是()
A.胃液分析
B.钡餐检查
C.胃镜检查
D.便隐血
E.腹部B超
参考答案:C
—Could you please _______the music? My baby is sleeping.
—Sorry. I will do it right away.
A.open up
B.turn down
C.drop by
D.dress up
试述传统模式的含义及其缺陷。