中学生林某课外活动时在学校的操场上翻单杠,单杠因年久失修突然断裂,林某从单杠上落在硬地上造成脊椎严重骨折。谁应对林某的伤害承担责任
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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