结肠肿瘤的典型X线征象是（）
A.铅管征
B.鹅卵石征
C.鸟嘴征
D.杯口征
E.充盈缺损
参考答案：E
With ______little schooling, he couldn't teach_____ little children.[ ]
A. such; so
B. so; such
C. such; such
D. so; so
联合关节
