单选题 Things went well for him during his early life but in middle age his ______ seemed to change.
A. chance B. luck C. career D. opportunity

【正确答案】 B

【答案解析】chance意为“机会”，指被认为引起不能预知或控制的事件的力量；luck意为“运气”，指好运或相反的事件碰巧发生；career意为“事业”，指某人工作经历或事业上取得成就的总过程：opportunity意为“机会”，指有利于进步或发展的机会。根据空格前面的but以及后面的change(变化)可知，前后句子的意思为转折，所以应该选用luck。