胃癌的好发部位是
A．幽门区
B．胃体部
C．胃大弯
D．贲门部
E．胃底部
参考答案：A
— Where is the broom?
— It's ____________ the house, ____________ the door. [ ]
A. behind, in
B. in, behind
C. after, behind
斑状结构和似斑状结构有什么区别？
