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2026年高考数学天津-1

  2026-10-10 17:46:46  

(5分)已知全集$U=\{-2,-1,0,1,2,3\}$,集合$A=\{-1,0,1,3\}$,集合$B=\{-2,0,1\}$,则$(\complement _{U}A)\bigcup B=$(  )
A.$\{-2\}$              B.$\{-2,2\}$              C.$\{0,1,2\}$              D.$\{-2,0,1,2\}$
〖答案〗$D$
〖分析〗根据补集和并集的定义求解即可.
〖解答〗解:$\because U=\{-2,-1,0,1,2,3\}$,$A=\{-1,0,1,3\}$,
$\therefore \complement _{U}A=\{-2,2\}$,
$\therefore (\complement _{U}A)\bigcup B=\{-2,0,1,2\}$.
故选:$D$.
〖点评〗本题主要考查了补集和并集运算,属于基础题.

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