音响广告最早出现于()
A、西周
B、东周
C、春秋
D、战国
参考答案:A
The person in front of me at ___checkout was using ___card to check out butfound it wasn't working.
A.不填;a
B.the; a
C.a; the
D.the; the
易感者注射乙肝疫苗
A.一级预防B.二级预防C.三级预防D.一级或者二级预防E.二级或者三级预防