5. (2018岳阳)There are ________ days in March and the ________ day is Women's Day.
A. thirty­one, eighth     B. thirty­first, eighth     C. thirty­one, eight
5. A【解析】考查基数词与序数词。句意：3月有天，天是妇女节。第一空后是day的复数，故其前用基数词表示“多少天”；第二空则用序数词表示“第几天”。故选A。