We stood there _____ at the _____ sight. [ ]

A. frightened; frightful

B. frightening; frightful

C. fright; frightening

D. frightful; fright

根据AQL等级检查表规定的检验标准有（ ）。

A．正常检验

B．加严检验

C．放宽检验

D．随机检验