— Didn't you have a good time at the party?

— Of course I did. As a matter of fact, I had such fun that time seemed to _____ so quickly. [ ]

A. go by

B. go away

C. go out

D. go over

γ照相机最适宜的γ射线能量为（）

A.40～80keV

B.100～250keV

C.300～400keV

D.364keV

E.511keV