• 1. (2021高一上·东台月考) WPS电子表格中B1，B2，B3单元格中都有数值，则与公式“=(B1+B2+B3)/3”等价的表达方式是(    )

  A . =SUM(B1:B3) B . =SUM(B1:B3)/B3 C . =AVERAGE(B1:B3) D . =AVERAGE(B1:B3)/3