各营业机构应在《保险兼业代理许可证》有效期满前（）个月申请办理换证事宜。
A.1
B.2
C.3
D.6
参考答案：B
we were ______ at the news of her sudden death.
A．astonishing
B．to astonish
C．astonished
D．astonish
增殖性肠结核的X线表现有()
A．回盲瓣常受侵犯而肥厚
B．粘膜呈息肉状充盈缺损
C．可出现肠梗阻表现
D．盲肠、升结肠狭窄、缩短
E．有激惹征
