My father enjoys ______ newspapers ______ breakfast. [ ]

A. watching; on

B. reading; on

C. reading; at

D. to read; at

进行（）是为了弄清楚每个零件的结构形状、作用及各零件间的装配关系.

A.概括了解

B.分析视图

C.看装配图

D.分析零件