我们以实例说明：设U={1,2,3,4,5,6,7,8},B={1,2,3,4,5},A={1,3,5}
A∩B={1,3,5}≠{}
A补∩B补,A补={2,4,6,7,8},B补={6,7,8},A补∩B补={6,7,8}≠{}
A补∩B={2,4}
A∩B补={},所以选择此项. 我们以实例说明：设U={1,2,3,4,5,6,7,8},B={1,2,3,4,5},A={1,3,5}
A∩B={1,3,5}≠{}
A补∩B补,A补={2,4,6,7,8},B补={6,7,8},A补∩B补={6,7,8}≠{}
A补∩B={2,4}
A∩B补={},所以选择此项.