中国新民主主义革命的开端是（）
B
暂无解析
在社会保障制度中，社会保障费用应改为由（）
论述加强党的建设的重要性和紧迫性。
John complained to the bookseller that there were several pages______ in the dictionary.
__________in thought while driving, he almost ran into the car coming in the opposite direction.
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