单选题 55. Her father had found a(n) ______ for his ambition in his work.

【正确答案】 B

【答案解析】 名词辨析题。outlet意为“出口；发泄途径”，符合句意，故B为答案。escape意为“逃离，逃脱”；medium意为“方法；传播媒介”；impact意为“影响；作用；撞击力”，均与句意不符，故排除。