The boy are _______ TV. [ ]
A. watch
B. watching
C. see
D. seeing
答案：B
A．5A
B．5A
C．5/2A
D．/2A
最有价值的辅助检查是
A．B超B．腹部CTC．纤维胃镜D．腹部X线平片E．全消化道钡餐
A
/2
/2A