Those who tend to _____ to their fate are sure not to make any achievements.
A:apply
B:subscribe
C:correspond
D:submit
— Really? I thought you ____ (not give) up the chance forever.
—At seven o'clock.
甲数为x,乙数为y,则甲数的3倍与乙数的和除甲数与乙数的3倍的差,可表示为( )
文学作品往往是一个时代的政治、经济、文化的集中反映。下列诗词与下图所反映的时代背景相同的是( )