He was in the mountain for a year. He felt as if he was from the outside world.A. cut out

问题补充：

He was in the mountain for a year. He felt as if he was from the outside world.

A. cut out

B. cut in

C. cut off

D. cut up

答案：

A. cut out

B. cut in

(答案→)C. cut off

D. cut up

解析：A停止，剪裁；B插话；C切断；D切碎；句义：他在山里住了一年，他感觉自己好像与外界的联系被切断了。根据句义说明A正确。