题目

The Mona Lisa, one of the world’s most famous paintings, has been recreated with 3,604 cups of coffee—and 564 pints of milk. The different colors were created by adding no, little or lots of milk to each cup of black coffee.    The recreated Mona Lisa measured 20 feet long and 13 feet wide. It took a team of eight people three hours to complete the work. It was created for The Rocks Aroma Festival in Sydney, Australia, and seen by 130,000 people who attended the one-day coffee-lovers event.    Elaine Kelly, one of the organizers from the Sydney Harbor Foreshore Authority, was delighted已知全集U＝R，Z是整数集，集合A＝｛x︱x2-x-6≥0,x∈R｝,则Z∩C∪A中元素的个数为