单选题 Miss Mary Smith goes to work always with a raincoat because ______.

A、 the weather often changes
B、 she likes to do so
C、 she has to walk home after work
D、 it always rains when it's time to go home

【正确答案】 A

【答案解析】本题是对文章细节进行分析理解的考查。根据文章第2段最后一句You never can tell what the weather will be like when it's time to go home...，可以理解为天气变化反复无常，Miss Mary Smith总是备有雨衣以防不测风云，因此A是正确的。