“子能食食,教以右手。能言,男唯女俞。男肇革,女擎丝,六年,教之数与方名。七年男女不同席,不共食。……”这个中国教育史上最早关于学前教育的记录出自( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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