—She got her first science fiction published．It turned out to be _________.

—when was that?

—It Was in 2008__________ she was still in college．

A．success; that

B．a success；when

C．success; when

D．a success; that

以下几个对直方图规定化的两种映射方式（SML与GML）的叙述中正确的是（）。

A、SML的误差一定大于GML；

B、原始直方图与规定化直方图中的灰度级数相等时（M=N），SML的误差一定等于GML；

C、N

D、SML与GML均是统计无偏的。