下述“少年结肠息肉”特点，错误的是() ["A．孤立性息肉发病率最高","B．孤立性息肉恶变率最高","C．6个以上息肉：少年结肠息肉病","D．居儿童结肠肿瘤发病首位","E．婴儿型发病率最低"]
肌力
下述胃溃疡征象，哪项提示为恶性() ["A．粘膜纠集","B．狭颈征","C．项圈征","D．腔外龛影","E．局部胃壁僵硬"]
流行性腮腺炎潜伏期为() ["A．5～7天","B．7～12天","C．12～14天","D．14～25天","E．25～30天"]
下列“结肠癌”的造影表现，哪项也可见于良性病变() ["A．环堤","B．半月征","C．结肠壁局限性僵硬","D．苹果核征","E．充盈缺损"]
主动的关节活动范围
