题目

Our Easter party is usually after the schooltrip. (改为一般疑问句) 答案:Is your Easter party usually after the school trip?已知全集U={-1,1,2,3,4},集合A={1,2,3},B={2,4},则(?UA)∪B为(  )A.{1,2,4}B.{2,3,4}C.{-1,2,4}D.{-1,2,3,4}
英语 试题推荐