鸡住白细胞虫病的死后剖检特征之一是各内脏器官出血，其出血部位最严重的是（）
A.心
B.肾
C.肝
D.脾
E.肠
参考答案：B
MODIFY STRUCTURE命令的功能是
A．修改记录值
B．修改表结构
C．修改数据库结构
D．修改数据库或表结构
Black broke his leg. He has just had _______ X-ray examination. _______ doctor said
he needed _______ operation.[ ]
A. a; The; an
B. a; A; an
C. an; A; an
D. an; The; an
