I certainly appreciate _____ us about the delay in delivering the materials because we had planned to begin work tomorrow.

A．him to tell

B．him of telling

C．he told

D．his telling

下列数字成像基本用语的解释，错误的是（）

A.矩阵表示一个横成行、纵成列的数字方阵

B.采集矩阵每幅画面所含像素的数目

C.显示矩阵一般小于采集矩阵

D.像素又称像元

E.体素是一个三维的概念