题目

Events     Long March exhibit     The Shanghai History Museum is putting on exhibition to remember the Long March(长征) which took place 75 years ago. More than 220 photos and 40 other things are on show. All the exhibition is explained in Chinese. The show will end on November 20.     Time: 10:00 a.m.—4:00 p.m.     Address: 1286 Hongqiao Road     Ticket: 8 yuan for Chinese / 15 yuan for foreigners     Thai elephants     Eight elephants from Thailand are an attraction for visitors at Changfeng Park by riding bikes, playing basketball, dancing and blowing a m已知P={x|2kπ≤x≤（2k+1）π，k∈z}，Q={x|-4≤x≤4}，则P∩Q=（　　） A、∅B、{x|-4≤x≤-π或0≤x≤π}C、{x|-4≤x≤4}D、{x|0≤x≤π}