发生重大以上道路旅客运输责任行车事故的客运企业，按降级后安全生产条件等级推迟该企业（）个月公示授牌。
A.6个月
B.8个月
C.12个月
参考答案：C
具有“灵活、展露重复性强、成本低、竞争少、但不能选择受众、创造力受到局限”特点的广告媒体是( )。
A．报纸
B．电视
C．杂志
D．户外广告
Not only Jim but also Tom ________ not here. They both went to Shanghai last week. [ ]
A. are
B. were
C. is
D. was
