In today's rapidly changing economy, opportunities______for those who are motivated and dedicated to achieving their career goals.
【正确答案】 A
【答案解析】本题中，abound的意思是“多，富于”；refrain的意思是“避免，抑制”；transcend的意思是“超越，胜过”；uphold的意思是“支持，赞成”。四个选项中只有A项符合题意。