Crohn病最常见的临床表现是（）
A.腹痛、腹泻
B.高热
C.肠梗阻
D.腹部肿块
E.肛门直肠周围病变
参考答案：A
商鞅变法的下列措施，对变革生产关系、促进封建制确立作用最大的是 （ ）
A．“令民为什伍”
B．“燔诗书而明法令”
C．“为田开阡陌封疆”
D．“平斗桶权衡尺丈”
---When _______for Guangzhou?
---Next Monday evening.
A．are you leaving
B．were you leaving
C．you are leaving
D．you were leaving
