机械性肠梗阻的典型表现是
A．板状腹B．阵发性腹痛C．呕吐D．肠鸣音减弱E．X光检查阶梯样液平面
参考答案：E
—It’s thirty years since we last met.
—But I still remember the story, believe it or not, __________ we got lost on a rainy night.
A．which
B．that
C．what
D．when
钢轨、向铁道外侧倾斜成为‘‘大反’’。
