上层建筑为经济基础服务就促进社会进步，否则就阻碍社会进步。（）
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总分类账和明细分类账一律都是根据记账凭证登记的。()
A. 正确
B. 错误
项目后评价的()特点是评价的公正性和客观性的重要保障。
A. 独立性
B. 科学性
C. 实用性
D. 反馈功能
By describing news as "machine-gunning with scraps", the author means______.
A. much of the news contains gun-fighting scenes
B. much of the news program is only a rapid broadcast of unrelated bits of information
C. news programs are repeated too frequently on the screen
D. news programs can't capture and hold viewers' attention
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