下列消化道哪个部位还不能进行管腔成形术的介入治疗：()
A．食管
B．胃
C．十二指肠
D．空肠
E．直肠
参考答案：D
_____ we were eating dinner in the restaurant, the owner's dog took my bag away quietly. [ ]
A. Because
B. While
C. As soon as
D. Until
斑疹伤寒的主要感染途径是（）
A.消化道
B.呼吸道
C.蚊叮咬
D.性接触
E.虱或蚤叮咬
