— I called you yesterday evening, but you were not in .

— Sorry, I ________ in the shop with my mother.

A．am

B．will be

C．was

D．have been

基于胶片的航测内业数字化生产过程中，内定向的主要目的是实现（）的转换。

A.像片坐标到地面坐标

B.扫描仪坐标到地面坐标

C.像平面坐标到像空间坐标

D.扫描仪坐标到像片坐标