由 2x+y+ilog2x-8=(1-log2y)i,得:2x+y-8+ilog2x=(1-log2y)i所以 2x+y?8=0 log2x=1?log2y ,即 2x+y=23 log2xy=1 ,也就是 x+y=3 xy=2 ,解得: x=2 y=1 ,或 x=1 y=2 .由z=x+yi,所以,z=2+i或1+2i.故选C.