He was in hospital for six months. He felt as if he was ______ from the outside world.

【正确答案】 A

【答案解析】 句意为他在医院待了半年，感觉跟外界的联系都切断了。cut off“切除、切断”，符合句意，故本题选A。cut out“删去、关掉”，cut up“切开、切碎”，cut through“抄近路穿过、克服”，均排除。