A:y=x2+2
B:y=(x﹣2)2+2
C:y=(x﹣2)2﹣2
D:y=(x+2)2﹣2
Chinese people usually enjoy the moon______ the evening____ the Mid-Autumn Festival.
下列词语中,没有错别字的一组是( )
长方体ABCD﹣A1B1C1D1的棱AB=AD=4cm,AA1=2cm,则点A1到平面AB1D1的距离等于____ cm.