—Do you mind __________ alone at home?

— Not at all. She is old enough to take care of herself.

A．Jane leaving

B．Jane having left

C．Jane’s being left

D．Jane to be left

计算机硬件能直接执行的语言是( )。

A．符号语言

B．机器语言

C．算法语言

D．汇编语言