半成改写成百分数是 请选择ABC0?/z2b,f2e8S4T9U)Q+u8m4G9I'v+R:a.d.T:q3s5P1G6m5f6N
A.50%+R:a.d.T:q3s5P1G6m5f6N
B.0.5%+R:a.d.T:q3s5P1G6m5f6N
C.5%+R:a.d.T:q3s5P1G6m5f6N