彭某,男,47岁,病人每天反复说:“你是医生„医生„„医生„,请你给我看病„„看病„„看病„„我要回家„„回家„„回家„„”该症状可能是()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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