开通亲情号码后可以在什么范围内使用？（）
A.本地
B.省内
C.全国
D.全球
参考答案：B
Kate didn't come yesterday, or you ________ her. [ ]
A. might have seen
B. were to see
C. had seen
D. would see
头孢菌素类用于抗绿脓杆菌感染药物是（）
A.头孢氨苄
B.头孢唑啉
C.头孢呋辛
D.头孢哌酮
E.头孢孟多
