语法与词汇 71.Failure to provide______explanations for his frequent blunders, this young man was fired.
【正确答案】 A
【答案解析】rational“合理的,理性的”;sentimental“伤感的,情绪化的,多愁善感的”;eccentric“性格古怪的”;skeptical“怀疑的”。填能修饰explanation的词,rational比较合适,故选A。