The stranger stopped and turned around ___________to see is someone was following him.

A．every few meters

B．every a few meters

C．every other meters

D．every meters

下面哪一项不是溃疡型胃癌的肉眼形态特点（）

A.呈火山口状

B.直径多大于2cm

C.溃疡通常较深

D.边缘不规则隆起

E.底部凹凸不平