某神志清醒、正接受紧急救治的急性心肌梗死病人,目睹医护人员镇定自若的神情和井然有序的救治,依然圆睁双目、焦躁不安。此时该病人的最主要情绪反应可能是
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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