在AutoCAD中复制其它文件中块的命令快捷键是（   ）\n
\n\n \n\n \n A.

CTRL+ALT+C     \n
\n
\n \n \n B.

CTRL+C   \n
\n
\n \n \n C.

CTRL+SHIFT+C     \n
\n
\n \n \n D.

CTRL+A