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(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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