一个分数的分子扩大2倍,分母缩小2倍,分数值请选择DCBA5I3o1A/Q*?8}0r7F-E:T-e+p
A.缩小2倍8}0r7F-E:T-e+p
B.扩大2倍8}0r7F-E:T-e+p
C.缩小4倍8}0r7F-E:T-e+p
D.扩大4倍8}0r7F-E:T-e+p