As the prisoner had been ______from the outside world for twenty years, he had no idea what the

outside world was like.      [      ]

A. cut off    

B. cut away    

C. cut out    

D. cut short

少先队员要勇于（），对自身存在的缺点和错误，要敢于承认并下决心去克服和改正。

A、克服困难

B、自我批评

C、战胜艰难和困苦

D、批评和自我批评