肛门直肠常用检查体位是
A.侧卧位
B.截石位
C.膝胸位
D.蹲位
E.俯卧位
参考答案:A,B,C,D
It____have been Tom that parked the car here, as he is the only one with a car. [ ]
A. may
B. must
C. can
D. should
食管最常见的良性肿瘤是()
A.脂肪瘤
B.血管瘤
C.平滑肌瘤
D.淋巴瘤
E.腺瘤