5千克比4千克多25%,那么4千克比5千克少 请选择ABC'o9F6Z-H7Z8^-D5V5k+N/L
A.25%8^-D5V5k+N/L
B.20%8^-D5V5k+N/L
C.80%8^-D5V5k+N/L