单选题
That couple has endured so many emotional and financial ______. It is amazing that their marriage has lasted.
【正确答案】
B
【答案解析】issue意为“问题”，指公众关心的事物；crisis意为“关键时刻”，指决定性时刻、转折点；subject意为“主题”，指谈话、论文、文章等的题目；question意为“问题”，指征求或要求回答的询问词句。emotional and financial(感情和经济的)修饰所填之词，所以应该选用crisis。