— Who on earth will take the place of him?

— I'm afraid no one would like to ____ the challenge

— It's just too difficult a task. [      ]

A. hold on

B. put on

C. take on

D. work on

下列哪一项违背了党内民主？（）

A.个人服从组织

B.少数服从多数

C.有决定权的领导机关必须是由党中央任命

D.重大问题由委员会集体讨论决定