原发性腹膜炎多见于
A．慢性咳嗽病人B．老年人C．从事重体力D．10岁以下体弱儿童E．孕妇
参考答案：D
The recent MH370 accident,______ more than two hundred people lost their lives, has renewed concerns over the safety of flight travel.
A．that
B．which
C．where
D．When
下列哪项不是胃肠黏膜的损害因素（）
A.非甾体类药物
B.吸烟
C.过度精神紧张
D.刺激性饮食
E.前列腺素
