a student was one day taking a walk with a professor...

问题描述:

a student was one day taking a walk with a professor...
he fell upon his knees,looked up to heaven and uttered aloud a fervent thanksgiving,in which he spoke of his wife,sick and helpless,and his children without bread,whom the timely bounty,from some unknown hand,would save from perishing句子中in which 指的是什么?

绝顶高手来了
which 指代 a fervent thanksgiving