人类在长期社会生活实践中逐渐积累起来的、为社会交往和社会公共生活所应当遵守的最基本的行为准则，称为（）
A
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Believeitornot,Idontliketheway____hespoketome.
Properspaceplanningis__forconductingasuccessfulbusinessmeeting.
Heborrowedabooktheotherday，theauthor____isaworker.
Oursisbeautifulschoolwithalonghistory,____weareproud.
Themanwhowasdrivingthedruckwouldnotadmitthathehadbeenatfaultand______.