幼儿方位知觉发展的顺序是先()再()然后是()由于幼儿辨别空间方位是以自身为中心辨别过渡到以其他客体为参照辨别,因此,教师在舞蹈、体育等活动中要做( )示
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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