国家反对和禁止一切形式的()。任何人宣扬、煽动、教唆、帮助、实施()，不分民族、种族、宗教信仰，一律依法追究法律责任。
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In the authors opinion, the illegal immigration issue in America
A. calls for more forceful laws on illicit working.
B. derives from a long history and various reasons.
C. stems mainly from people"s longing for family reunion.
D. brings illegal workers an unpleasant and unpredictable life.
党的十九大报告指出，要严密防范和坚决打击哪些危害国家安全的活动？
空腹钢门和实腹钢门的主要技术性能包含()
A﹑颜色
B﹑外形尺寸
C﹑框扇配合
D﹑门启用方向
E﹑联接和外观
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