随知识经验的积累,儿童情感的分化逐渐精细、准确。以“笑”为例,小学儿童除了会微笑、大笑外,还会羞涩地笑、偷笑、嘲笑、冷笑、苦笑、狂笑等。这一表现说明了小学儿童情感的( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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