小陈是位优秀的体操运动员,参加比赛时不慎下肢骨折,入院治疗后病情稳定,但情绪低落,很少与人交往。你认为小陈的表现是何种基本需要未能满足
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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