一个棱长为6厘米的正方体容器里放了4厘米深的水,现放入棱长为2厘米的正方体木块,这木块一半沉在水中,容器里的水升高了多少厘米?( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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