某学生性格过分内向,害怕在社交场合说话,觉得自己说话不自然,说话时不敢抬头,不敢正视对方眼睛。这属于( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧