A.=AVERAGE(C4:C7) B.=AVERAGE($C$4:$C$7) C.=AVERAGE(C3:C6) D.=AVERAGE($C$3:$C$6)
A.$A2:$C5 B.$A$2:$C$5 C.$A2:C5 D.A2:C5
A.xyz.xyz.tpt.tj.cnB.sina.com.@xyzC.xyz@sina.comD.sina.com.xyz