单项选择题
A.=AVERAGE*1.25 B.=1.25AVERAGE(B2:B5) C.=AVERAGE(B2:B5)*1.25 D.=B2+B3+B4+B5*1.25
A.Ctrl+Alt+Ins B.Alt+Shift+Del C.Ctrl+Alt+De l D.Alt+Shift+Ins