You （）buy a gift, but you can if you want to.

单项选择题—I'm sorry I didn't make it to your party last night. — （）. I know you're busy these days.

A. Of course
B. No kidding
C. That's all right
D. Don't mention it

单项选择题The computer revolution may well change society as （）as did the Industrial Revolution.

A．certainly
B．insignificantly
C．fundamentally
D．comparatively