By the end of last year,another new theme park         completed in that area. [ ]

A. was being

B. would be

C. has been

D. had been

2011年2月24日，国际泳联跳水大奖赛的俄罗斯奔萨站上，跳水赛播错中国国歌，中国选手李世鑫清唱中国国歌至嘶哑赢得全场掌声。这表明作为中国公民应该

①自觉履行维护国家利益的义务 ②自觉遵守宪法和法律

③自觉履行维护国家荣誉的义务 ④自觉维护国家统一和民族团结的义务

A．①②

B．③④

C．①③

D．②④