下列哪些属于心境障碍的发病危险因素（）
A.遗传因素
B.心理因素
C.年龄
D.性别
E.社会因素
参考答案：A, B, C, D, E
We at the airport; otherwise we would have arrived home by lunch time.
A．had delayed
B．were delayed
C．had been delayed
D．have delayed
跨度
