Among the refugees and migrants

Among the refugees and migrants who are coming into Europe, one out of ten（ ）still in childhood.
A、were
B、are
C、was
D、is
【正确答案】：D
【题目解析】：当one 用在one of five， one out of ten, one in ten时，谓语动词用单数。又由前半句可知 句子时态为现在时态，所以选择is