问题 选择题

设X={0,1,2,4} ,Y={1,3,6,8}, 则X∪Y=[ ]

A、{1}

B、{0,1,2,3}

C、{2,4,6,8}

D、{0,1,2,3,4,6,8}

答案

答案:D

判断题
单项选择题